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Remove my changes. PATH_PORTS is not checked for multiple entries as
[dragonfly.git] / usr.bin / ee / ee.c
blobf55df96c552b0c2106bd5945e6f9213a292a3789
1 /*
2 | ee (easy editor)
3 |
4 | An easy to use, simple screen oriented editor.
5 |
6 | written by Hugh Mahon
7 |
8 | THIS MATERIAL IS PROVIDED "AS IS". THERE ARE
9 | NO WARRANTIES OF ANY KIND WITH REGARD TO THIS
10 | MATERIAL, INCLUDING, BUT NOT LIMITED TO, THE
11 | IMPLIED WARRANTIES OF MERCHANTABILITY AND
12 | FITNESS FOR A PARTICULAR PURPOSE. Neither
13 | Hewlett-Packard nor Hugh Mahon shall be liable
14 | for errors contained herein, nor for
15 | incidental or consequential damages in
16 | connection with the furnishing, performance or
17 | use of this material. Neither Hewlett-Packard
18 | nor Hugh Mahon assumes any responsibility for
19 | the use or reliability of this software or
20 | documentation. This software and
21 | documentation is totally UNSUPPORTED. There
22 | is no support contract available. Hewlett-
23 | Packard has done NO Quality Assurance on ANY
24 | of the program or documentation. You may find
25 | the quality of the materials inferior to
26 | supported materials.
27 |
28 | This software is not a product of Hewlett-Packard, Co., or any
29 | other company. No support is implied or offered with this software.
30 | You've got the source, and you're on your own.
31 |
32 | This software may be distributed under the terms of Larry Wall's
33 | Artistic license, a copy of which is included in this distribution.
34 |
35 | This notice must be included with this software and any derivatives.
36 |
37 | This editor was purposely developed to be simple, both in
38 | interface and implementation. This editor was developed to
39 | address a specific audience: the user who is new to computers
40 | (especially UNIX).
41 |
42 | ee is not aimed at technical users; for that reason more
43 | complex features were intentionally left out. In addition,
44 | ee is intended to be compiled by people with little computer
45 | experience, which means that it needs to be small, relatively
46 | simple in implementation, and portable.
47 |
48 | This software and documentation contains
49 | proprietary information which is protected by
50 | copyright. All rights are reserved.
51 *
52 * $FreeBSD: src/usr.bin/ee/ee.c,v 1.16.2.6 2002/05/11 16:33:06 mp Exp $
53 * $DragonFly: src/usr.bin/ee/ee.c,v 1.3 2003/10/04 20:36:43 hmp Exp $
54 */
55
56 char *ee_copyright_message =
57 "Copyright (c) 1986, 1990, 1991, 1992, 1993, 1994, 1995, 1996 Hugh Mahon ";
58
59 char *ee_long_notice[] = {
60 "This software and documentation contains",
61 "proprietary information which is protected by",
62 "copyright. All rights are reserved."
63 };
64
65 char *version = "@(#) ee, version 1.4.1";
66
67 #ifdef NCURSE
68 #include "new_curse.h"
69 #elif HAS_NCURSES
70 #include <ncurses.h>
71 #else
72 #include <curses.h>
73 #endif
74
75 #ifdef HAS_CTYPE
76 #include <ctype.h>
77 #endif
78 #include <err.h>
79 #include <errno.h>
80 #include <fcntl.h>
81 #include <paths.h>
82 #include <pwd.h>
83 #include <signal.h>
84 #include <sys/types.h>
85 #include <sys/stat.h>
86 #ifdef HAS_SYS_WAIT
87 #include <sys/wait.h>
88 #endif
89 #ifdef HAS_STDARG
90 #include <stdarg.h>
91 #endif
92 #ifdef HAS_STDLIB
93 #include <stdlib.h>
94 #endif
95 #include <string.h>
96 #ifdef HAS_UNISTD
97 #include <unistd.h>
98 #endif
99
100 #ifndef NO_CATGETS
101 #include <locale.h>
102 #include <nl_types.h>
103
104 nl_catd catalog;
105 #else
106 #define catgetlocal(a, b) (b)
107 #endif /* NO_CATGETS */
108
109 #ifndef SIGCHLD
110 #define SIGCHLD SIGCLD
111 #endif
112
113 #define TAB 9
114 #define max(a, b) (a > b ? a : b)
115 #define min(a, b) (a < b ? a : b)
116
117 /*
118 | defines for type of data to show in info window
119 */
120
121 #define CONTROL_KEYS 1
122 #define COMMANDS 2
123
124 struct text {
125 unsigned char *line; /* line of characters */
126 int line_number; /* line number */
127 int line_length; /* actual number of characters in the line */
128 int max_length; /* maximum number of characters the line handles */
129 struct text *next_line; /* next line of text */
130 struct text *prev_line; /* previous line of text */
131 };
132
133 struct text *first_line; /* first line of current buffer */
134 struct text *dlt_line; /* structure for info on deleted line */
135 struct text *curr_line; /* current line cursor is on */
136 struct text *tmp_line; /* temporary line pointer */
137 struct text *srch_line; /* temporary pointer for search routine */
138
139 struct files { /* structure to store names of files to be edited*/
140 unsigned char *name; /* name of file */
141 struct files *next_name;
142 };
143
144 struct files *top_of_stack = NULL;
145
146 int d_wrd_len; /* length of deleted word */
147 int position; /* offset in bytes from begin of line */
148 int scr_pos; /* horizontal position */
149 int scr_vert; /* vertical position on screen */
150 int scr_horz; /* horizontal position on screen */
151 int tmp_vert, tmp_horz;
152 int input_file; /* indicate to read input file */
153 int recv_file; /* indicate reading a file */
154 int edit; /* continue executing while true */
155 int gold; /* 'gold' function key pressed */
156 int fildes; /* file descriptor */
157 int case_sen; /* case sensitive search flag */
158 int last_line; /* last line for text display */
159 int last_col; /* last column for text display */
160 int horiz_offset = 0; /* offset from left edge of text */
161 int clear_com_win; /* flag to indicate com_win needs clearing */
162 int text_changes = FALSE; /* indicate changes have been made to text */
163 int get_fd; /* file descriptor for reading a file */
164 int info_window = TRUE; /* flag to indicate if help window visible */
165 int info_type = CONTROL_KEYS; /* flag to indicate type of info to display */
166 int expand_tabs = TRUE; /* flag for expanding tabs */
167 int right_margin = 0; /* the right margin */
168 int observ_margins = TRUE; /* flag for whether margins are observed */
169 int shell_fork;
170 int temp_stdin; /* temporary storage for stdin */
171 int temp_stdout; /* temp storage for stdout descriptor */
172 int temp_stderr; /* temp storage for stderr descriptor */
173 int pipe_out[2]; /* pipe file desc for output */
174 int pipe_in[2]; /* pipe file descriptors for input */
175 int out_pipe; /* flag that info is piped out */
176 int in_pipe; /* flag that info is piped in */
177 int formatted = FALSE; /* flag indicating paragraph formatted */
178 int auto_format = FALSE; /* flag for auto_format mode */
179 int restricted = FALSE; /* flag to indicate restricted mode */
180 int nohighlight = FALSE; /* turns off highlighting */
181 int eightbit = TRUE; /* eight bit character flag */
182 int local_LINES = 0; /* copy of LINES, to detect when win resizes */
183 int local_COLS = 0; /* copy of COLS, to detect when win resizes */
184 int curses_initialized = FALSE; /* flag indicating if curses has been started*/
185 int emacs_keys_mode = FALSE; /* mode for if emacs key binings are used */
186 int ee_chinese = FALSE; /* allows handling of multi-byte characters */
187 /* by checking for high bit in a byte the */
188 /* code recognizes a two-byte character */
189 /* sequence */
190
191 unsigned char *point; /* points to current position in line */
192 unsigned char *srch_str; /* pointer for search string */
193 unsigned char *u_srch_str; /* pointer to non-case sensitive search */
194 unsigned char *srch_1; /* pointer to start of suspect string */
195 unsigned char *srch_2; /* pointer to next character of string */
196 unsigned char *srch_3;
197 unsigned char *in_file_name = NULL; /* name of input file */
198 char *tmp_file; /* temporary file name */
199 unsigned char *d_char; /* deleted character */
200 unsigned char *d_word; /* deleted word */
201 unsigned char *d_line; /* deleted line */
202 char in_string[513]; /* buffer for reading a file */
203 unsigned char *print_command = "lpr"; /* string to use for the print command */
204 unsigned char *start_at_line = NULL; /* move to this line at start of session*/
205 const char count_text_default[] = "===============================================================================";
206 int count_text_len = sizeof(count_text_default); /* length of the line above */
207 char count_text[sizeof(count_text_default)]; /* buffer for current position display */
208 int in; /* input character */
209
210 FILE *temp_fp; /* temporary file pointer */
211 FILE *bit_bucket; /* file pointer to /dev/null */
212
213 char *table[] = {
214 "^@", "^A", "^B", "^C", "^D", "^E", "^F", "^G", "^H", "\t", "^J",
215 "^K", "^L", "^M", "^N", "^O", "^P", "^Q", "^R", "^S", "^T", "^U",
216 "^V", "^W", "^X", "^Y", "^Z", "^[", "^\\", "^]", "^^", "^_"
217 };
218
219 WINDOW *com_win;
220 WINDOW *text_win;
221 WINDOW *help_win;
222 WINDOW *info_win;
223 WINDOW *count_win;
224
225 #if defined(__STDC__) || defined(__cplusplus)
226 #define P_(s) s
227 #else
228 #define P_(s) ()
229 #endif
230
231
232 /*
233 | The following structure allows menu items to be flexibly declared.
234 | The first item is the string describing the selection, the second
235 | is the address of the procedure to call when the item is selected,
236 | and the third is the argument for the procedure.
237 |
238 | For those systems with i18n, the string should be accompanied by a
239 | catalog number. The 'int *' should be replaced with 'void *' on
240 | systems with that type.
241 |
242 | The first menu item will be the title of the menu, with NULL
243 | parameters for the procedure and argument, followed by the menu items.
244 |
245 | If the procedure value is NULL, the menu item is displayed, but no
246 | procedure is called when the item is selected. The number of the
247 | item will be returned. If the third (argument) parameter is -1, no
248 | argument is given to the procedure when it is called.
249 */
250
251 struct menu_entries {
252 char *item_string;
253 int (*procedure)P_((struct menu_entries *));
254 struct menu_entries *ptr_argument;
255 int (*iprocedure)P_((int));
256 void (*nprocedure)P_((void));
257 int argument;
258 };
259
260 int main P_((int argc, char *argv[]));
261 unsigned char *resiz_line P_((int factor, struct text *rline, int rpos));
262 void insert P_((int character));
263 void delete P_((int disp));
264 void scanline P_((unsigned char *pos));
265 int tabshift P_((int temp_int));
266 int out_char P_((WINDOW *window, int character, int column));
267 int len_char P_((int character, int column));
268 void draw_line P_((int vertical, int horiz, unsigned char *ptr, int t_pos, int length));
269 void insert_line P_((int disp));
270 struct text *txtalloc P_((void));
271 struct files *name_alloc P_((void));
272 unsigned char *next_word P_((unsigned char *string));
273 void prev_word P_((void));
274 void control P_((void));
275 void emacs_control P_((void));
276 void bottom P_((void));
277 void top P_((void));
278 void nextline P_((void));
279 void prevline P_((void));
280 void left P_((int disp));
281 void right P_((int disp));
282 void find_pos P_((void));
283 void up P_((void));
284 void down P_((void));
285 void function_key P_((void));
286 void print_buffer P_((void));
287 void command_prompt P_((void));
288 void command P_((char *cmd_str1));
289 int scan P_((char *line, int offset, int column));
290 char *get_string P_((char *prompt, int advance));
291 int compare P_((char *string1, char *string2, int sensitive));
292 void goto_line P_((char *cmd_str));
293 void midscreen P_((int line, unsigned char *pnt));
294 void get_options P_((int numargs, char *arguments[]));
295 void check_fp P_((void));
296 void get_file P_((char *file_name));
297 void get_line P_((int length, unsigned char *in_string, int *append));
298 void draw_screen P_((void));
299 void finish P_((void));
300 int quit P_((int noverify));
301 void edit_abort P_((int arg));
302 void delete_text P_((void));
303 int write_file P_((char *file_name));
304 int search P_((int display_message));
305 void search_prompt P_((void));
306 void del_char P_((void));
307 void undel_char P_((void));
308 void del_word P_((void));
309 void undel_word P_((void));
310 void del_line P_((void));
311 void undel_line P_((void));
312 void adv_word P_((void));
313 void move_rel P_((char *direction, int lines));
314 void eol P_((void));
315 void bol P_((void));
316 void adv_line P_((void));
317 void sh_command P_((char *string));
318 void set_up_term P_((void));
319 void resize_check P_((void));
320 int menu_op P_((struct menu_entries *));
321 void paint_menu P_((struct menu_entries menu_list[], int max_width, int max_height, int list_size, int top_offset, WINDOW *menu_win, int off_start, int vert_size));
322 void help P_((void));
323 void paint_info_win P_((void));
324 void no_info_window P_((void));
325 void create_info_window P_((void));
326 int file_op P_((int arg));
327 void shell_op P_((void));
328 void leave_op P_((void));
329 void redraw P_((void));
330 int Blank_Line P_((struct text *test_line));
331 void Format P_((void));
332 void ee_init P_((void));
333 void dump_ee_conf P_((void));
334 void echo_string P_((char *string));
335 void spell_op P_((void));
336 void ispell_op P_((void));
337 int first_word_len P_((struct text *test_line));
338 void Auto_Format P_((void));
339 void modes_op P_((void));
340 char *is_in_string P_((char *string, char *substring));
341 char *resolve_name P_((char *name));
342 int restrict_mode P_((void));
343 int unique_test P_((char *string, char *list[]));
344 void renumber_lines P_((struct text *firstline, int startnumber));
345 void strings_init P_((void));
346
347 #undef P_
348 /*
349 | allocate space here for the strings that will be in the menu
350 */
351
352 struct menu_entries modes_menu[] = {
353 {"", NULL, NULL, NULL, NULL, 0}, /* title */
354 {"", NULL, NULL, NULL, NULL, -1}, /* 1. tabs to spaces */
355 {"", NULL, NULL, NULL, NULL, -1}, /* 2. case sensitive search*/
356 {"", NULL, NULL, NULL, NULL, -1}, /* 3. margins observed */
357 {"", NULL, NULL, NULL, NULL, -1}, /* 4. auto-paragraph */
358 {"", NULL, NULL, NULL, NULL, -1}, /* 5. eightbit characters*/
359 {"", NULL, NULL, NULL, NULL, -1}, /* 6. info window */
360 {"", NULL, NULL, NULL, NULL, -1}, /* 7. emacs key bindings*/
361 {"", NULL, NULL, NULL, NULL, -1}, /* 8. right margin */
362 {"", NULL, NULL, NULL, NULL, -1}, /* 9. chinese text */
363 {"", NULL, NULL, NULL, dump_ee_conf, -1}, /* 10. save editor config */
364 {NULL, NULL, NULL, NULL, NULL, -1} /* terminator */
365 };
366
367 char *mode_strings[11];
368
369 #define NUM_MODES_ITEMS 10
370
371 struct menu_entries config_dump_menu[] = {
372 {"", NULL, NULL, NULL, NULL, 0},
373 {"", NULL, NULL, NULL, NULL, -1},
374 {"", NULL, NULL, NULL, NULL, -1},
375 {NULL, NULL, NULL, NULL, NULL, -1}
376 };
377
378 struct menu_entries leave_menu[] = {
379 {"", NULL, NULL, NULL, NULL, -1},
380 {"", NULL, NULL, NULL, finish, -1},
381 {"", NULL, NULL, quit, NULL, TRUE},
382 {NULL, NULL, NULL, NULL, NULL, -1}
383 };
384
385 #define READ_FILE 1
386 #define WRITE_FILE 2
387 #define SAVE_FILE 3
388
389 struct menu_entries file_menu[] = {
390 {"", NULL, NULL, NULL, NULL, -1},
391 {"", NULL, NULL, file_op, NULL, READ_FILE},
392 {"", NULL, NULL, file_op, NULL, WRITE_FILE},
393 {"", NULL, NULL, file_op, NULL, SAVE_FILE},
394 {"", NULL, NULL, NULL, print_buffer, -1},
395 {NULL, NULL, NULL, NULL, NULL, -1}
396 };
397
398 struct menu_entries search_menu[] = {
399 {"", NULL, NULL, NULL, NULL, 0},
400 {"", NULL, NULL, NULL, search_prompt, -1},
401 {"", NULL, NULL, search, NULL, TRUE},
402 {NULL, NULL, NULL, NULL, NULL, -1}
403 };
404
405 struct menu_entries spell_menu[] = {
406 {"", NULL, NULL, NULL, NULL, -1},
407 {"", NULL, NULL, NULL, spell_op, -1},
408 {"", NULL, NULL, NULL, ispell_op, -1},
409 {NULL, NULL, NULL, NULL, NULL, -1}
410 };
411
412 struct menu_entries misc_menu[] = {
413 {"", NULL, NULL, NULL, NULL, -1},
414 {"", NULL, NULL, NULL, Format, -1},
415 {"", NULL, NULL, NULL, shell_op, -1},
416 {"", menu_op, spell_menu, NULL, NULL, -1},
417 {NULL, NULL, NULL, NULL, NULL, -1}
418 };
419
420 struct menu_entries main_menu[] = {
421 {"", NULL, NULL, NULL, NULL, -1},
422 {"", NULL, NULL, NULL, leave_op, -1},
423 {"", NULL, NULL, NULL, help, -1},
424 {"", menu_op, file_menu, NULL, NULL, -1},
425 {"", NULL, NULL, NULL, redraw, -1},
426 {"", NULL, NULL, NULL, modes_op, -1},
427 {"", menu_op, search_menu, NULL, NULL, -1},
428 {"", menu_op, misc_menu, NULL, NULL, -1},
429 {NULL, NULL, NULL, NULL, NULL, -1}
430 };
431
432 char *help_text[23];
433 char *control_keys[5];
434
435 char *emacs_help_text[22];
436 char *emacs_control_keys[5];
437
438 char *command_strings[5];
439 char *commands[32];
440 char *init_strings[22];
441
442 #define MENU_WARN 1
443
444 #define max_alpha_char 36
445
446 /*
447 | Declarations for strings for localization
448 */
449
450 char *com_win_message; /* to be shown in com_win if no info window */
451 char *no_file_string;
452 char *ascii_code_str;
453 char *printer_msg_str;
454 char *command_str;
455 char *file_write_prompt_str;
456 char *file_read_prompt_str;
457 char *char_str;
458 char *unkn_cmd_str;
459 char *non_unique_cmd_msg;
460 char *line_num_str;
461 char *line_len_str;
462 char *current_file_str;
463 char *usage0;
464 char *usage1;
465 char *usage2;
466 char *usage3;
467 char *usage4;
468 char *file_is_dir_msg;
469 char *new_file_msg;
470 char *cant_open_msg;
471 char *open_file_msg;
472 char *file_read_fin_msg;
473 char *reading_file_msg;
474 char *read_only_msg;
475 char *file_read_lines_msg;
476 char *save_file_name_prompt;
477 char *file_not_saved_msg;
478 char *changes_made_prompt;
479 char *yes_char;
480 char *file_exists_prompt;
481 char *create_file_fail_msg;
482 char *writing_file_msg;
483 char *file_written_msg;
484 char *searching_msg;
485 char *str_not_found_msg;
486 char *search_prompt_str;
487 char *exec_err_msg;
488 char *continue_msg;
489 char *menu_cancel_msg;
490 char *menu_size_err_msg;
491 char *press_any_key_msg;
492 char *shell_prompt;
493 char *formatting_msg;
494 char *shell_echo_msg;
495 char *spell_in_prog_msg;
496 char *margin_prompt;
497 char *restricted_msg;
498 char *ON;
499 char *OFF;
500 char *HELP;
501 char *WRITE;
502 char *READ;
503 char *LINE;
504 char *FILE_str;
505 char *CHARACTER;
506 char *REDRAW;
507 char *RESEQUENCE;
508 char *AUTHOR;
509 char *VERSION;
510 char *CASE;
511 char *NOCASE;
512 char *EXPAND;
513 char *NOEXPAND;
514 char *Exit_string;
515 char *QUIT_string;
516 char *INFO;
517 char *NOINFO;
518 char *MARGINS;
519 char *NOMARGINS;
520 char *AUTOFORMAT;
521 char *NOAUTOFORMAT;
522 char *Echo;
523 char *PRINTCOMMAND;
524 char *RIGHTMARGIN;
525 char *HIGHLIGHT;
526 char *NOHIGHLIGHT;
527 char *EIGHTBIT;
528 char *NOEIGHTBIT;
529 char *EMACS_string;
530 char *NOEMACS_string;
531 char *conf_dump_err_msg;
532 char *conf_dump_success_msg;
533 char *conf_not_saved_msg;
534 char *ree_no_file_msg;
535 char *cancel_string;
536 char *menu_too_lrg_msg;
537 char *more_above_str, *more_below_str;
538
539 char *chinese_cmd, *nochinese_cmd;
540
541 #ifndef __STDC__
542 #ifndef HAS_STDLIB
543 extern char *malloc();
544 extern char *realloc();
545 extern char *getenv();
546 FILE *fopen(); /* declaration for open function */
547 #endif /* HAS_STDLIB */
548 #endif /* __STDC__ */
549
550 int
551 main(int argc, char **argv) /* beginning of main program */
552 {
553 int counter;
554
555 for (counter = 1; counter < 24; counter++)
556 signal(counter, SIG_IGN);
557
558 signal(SIGCHLD, SIG_DFL);
559 signal(SIGSEGV, SIG_DFL);
560 signal(SIGINT, edit_abort);
561 signal(SIGHUP, edit_abort);
562
563 d_char = malloc(3); /* provide a buffer for multi-byte chars */
564 d_word = malloc(150);
565 *d_word = (char) NULL;
566 d_line = NULL;
567 dlt_line = txtalloc();
568 dlt_line->line = d_line;
569 dlt_line->line_length = 0;
570 curr_line = first_line = txtalloc();
571 curr_line->line = point = malloc(10);
572 curr_line->line_length = 1;
573 curr_line->max_length = 10;
574 curr_line->prev_line = NULL;
575 curr_line->next_line = NULL;
576 curr_line->line_number = 1;
577 srch_str = NULL;
578 u_srch_str = NULL;
579 position = 1;
580 scr_pos =0;
581 scr_vert = 0;
582 scr_horz = 0;
583 bit_bucket = fopen(_PATH_DEVNULL, "w");
584 edit = TRUE;
585 gold = case_sen = FALSE;
586 shell_fork = TRUE;
587 strings_init();
588 ee_init();
589 if (argc > 0 )
590 get_options(argc, argv);
591 set_up_term();
592 if (right_margin == 0)
593 right_margin = COLS - 1;
594 if (top_of_stack == NULL)
595 {
596 if (restrict_mode())
597 {
598 wmove(com_win, 0, 0);
599 werase(com_win);
600 wprintw(com_win, ree_no_file_msg);
601 wrefresh(com_win);
602 edit_abort(0);
603 }
604 wprintw(com_win, no_file_string);
605 wrefresh(com_win);
606 }
607 else
608 check_fp();
609
610 clear_com_win = TRUE;
611
612 while(edit)
613 {
614 if (info_window)
615 {
616 snprintf(count_text, count_text_len, "L: %d C: %d %s", \
617 curr_line->line_number, scr_horz + 1, count_text_default);
618 wmove(count_win, 0, 0);
619 if (!nohighlight)
620 wstandout(count_win);
621 wprintw(count_win, count_text);
622 wstandend(count_win);
623 wnoutrefresh(count_win);
624 }
625
626 wnoutrefresh(text_win);
627 doupdate();
628 in = wgetch(text_win);
629 if (in == -1)
630 continue;
631
632 resize_check();
633
634 if (clear_com_win)
635 {
636 clear_com_win = FALSE;
637 wmove(com_win, 0, 0);
638 werase(com_win);
639 if (!info_window)
640 {
641 wprintw(com_win, "%s", com_win_message);
642 }
643 wrefresh(com_win);
644 }
645
646 if (in > 255)
647 function_key();
648 else if ((in == '\10') || (in == 127))
649 {
650 in = 8; /* make sure key is set to backspace */
651 delete(TRUE);
652 }
653 else if ((in > 31) || (in == 9))
654 insert(in);
655 else if ((in >= 0) && (in <= 31))
656 {
657 if (emacs_keys_mode)
658 emacs_control();
659 else
660 control();
661 }
662 }
663 return(0);
664 }
665
666 /* factor: resize factor */
667 /* rline: position in line */
668 unsigned char *
669 resiz_line(int factor, struct text *rline, int rpos)
670 /* resize the line to length + factor*/
671 {
672 unsigned char *rpoint;
673 int resiz_var;
674
675 rline->max_length += factor;
676 rpoint = rline->line = realloc(rline->line, rline->max_length );
677 for (resiz_var = 1 ; (resiz_var < rpos) ; resiz_var++)
678 rpoint++;
679 return(rpoint);
680 }
681
682 void
683 insert(int character) /* insert character into line */
684 {
685 int counter;
686 int value;
687 unsigned char *temp; /* temporary pointer */
688 unsigned char *temp2; /* temporary pointer */
689
690 if ((character == '\011') && (expand_tabs))
691 {
692 counter = len_char('\011', scr_horz);
693 for (; counter > 0; counter--)
694 insert(' ');
695 if (auto_format)
696 Auto_Format();
697 return;
698 }
699 text_changes = TRUE;
700 if ((curr_line->max_length - curr_line->line_length) < 5)
701 point = resiz_line(10, curr_line, position);
702 curr_line->line_length++;
703 temp = point;
704 counter = position;
705 while (counter < curr_line->line_length) /* find end of line */
706 {
707 counter++;
708 temp++;
709 }
710 temp++; /* increase length of line by one */
711 while (point < temp)
712 {
713 temp2=temp - 1;
714 *temp= *temp2; /* shift characters over by one */
715 temp--;
716 }
717 *point = character; /* insert new character */
718 wclrtoeol(text_win);
719 if (((character >= 0) && (character < ' ')) || (character >= 127)) /* check for TAB character*/
720 {
721 scr_pos = scr_horz += out_char(text_win, character, scr_horz);
722 point++;
723 position++;
724 }
725 else
726 {
727 waddch(text_win, character);
728 scr_pos = ++scr_horz;
729 point++;
730 position ++;
731 }
732
733 if ((observ_margins) && (right_margin < scr_pos))
734 {
735 counter = position;
736 while (scr_pos > right_margin)
737 prev_word();
738 if (scr_pos == 0)
739 {
740 while (position < counter)
741 right(TRUE);
742 }
743 else
744 {
745 counter -= position;
746 insert_line(TRUE);
747 for (value = 0; value < counter; value++)
748 right(TRUE);
749 }
750 }
751
752 if ((scr_horz - horiz_offset) > last_col)
753 {
754 horiz_offset += 8;
755 midscreen(scr_vert, point);
756 }
757
758 if ((auto_format) && (character == ' ') && (!formatted))
759 Auto_Format();
760 else if ((character != ' ') && (character != '\t'))
761 formatted = FALSE;
762
763 draw_line(scr_vert, scr_horz, point, position, curr_line->line_length);
764 }
765
766 void
767 delete(int disp) /* delete character */
768 {
769 unsigned char *tp;
770 unsigned char *temp2;
771 struct text *temp_buff;
772 int temp_vert;
773 int temp_pos;
774 int del_width = 1;
775
776 if (point != curr_line->line) /* if not at beginning of line */
777 {
778 text_changes = TRUE;
779 temp2 = tp = point;
780 if ((ee_chinese) && (position >= 2) && (*(point - 2) > 127))
781 {
782 del_width = 2;
783 }
784 tp -= del_width;
785 point -= del_width;
786 position -= del_width;
787 temp_pos = position;
788 curr_line->line_length -= del_width;
789 if ((*tp < ' ') || (*tp >= 127)) /* check for TAB */
790 scanline(tp);
791 else
792 scr_horz -= del_width;
793 scr_pos = scr_horz;
794 if (in == 8)
795 {
796 if (del_width == 1)
797 *d_char = *point; /* save deleted character */
798 else
799 {
800 d_char[0] = *point;
801 d_char[1] = *(point + 1);
802 }
803 d_char[del_width] = (unsigned char) NULL;
804 }
805 while (temp_pos <= curr_line->line_length)
806 {
807 temp_pos++;
808 *tp = *temp2;
809 tp++;
810 temp2++;
811 }
812 if (scr_horz < horiz_offset)
813 {
814 horiz_offset -= 8;
815 midscreen(scr_vert, point);
816 }
817 }
818 else if (curr_line->prev_line != NULL)
819 {
820 text_changes = TRUE;
821 left(disp); /* go to previous line */
822 temp_buff = curr_line->next_line;
823 point = resiz_line(temp_buff->line_length, curr_line, position);
824 if (temp_buff->next_line != NULL)
825 temp_buff->next_line->prev_line = curr_line;
826 curr_line->next_line = temp_buff->next_line;
827 renumber_lines(curr_line->next_line, curr_line->line_number + 1);
828 temp2 = temp_buff->line;
829 if (in == 8)
830 {
831 d_char[0] = '\n';
832 d_char[1] = (unsigned char) NULL;
833 }
834 tp = point;
835 temp_pos = 1;
836 while (temp_pos < temp_buff->line_length)
837 {
838 curr_line->line_length++;
839 temp_pos++;
840 *tp = *temp2;
841 tp++;
842 temp2++;
843 }
844 *tp = (char) NULL;
845 free(temp_buff->line);
846 free(temp_buff);
847 temp_buff = curr_line;
848 temp_vert = scr_vert;
849 scr_pos = scr_horz;
850 if (scr_vert < last_line)
851 {
852 wmove(text_win, scr_vert + 1, 0);
853 wdeleteln(text_win);
854 }
855 while ((temp_buff != NULL) && (temp_vert < last_line))
856 {
857 temp_buff = temp_buff->next_line;
858 temp_vert++;
859 }
860 if ((temp_vert == last_line) && (temp_buff != NULL))
861 {
862 tp = temp_buff->line;
863 wmove(text_win, last_line,0);
864 wclrtobot(text_win);
865 draw_line(last_line, 0, tp, 1, temp_buff->line_length);
866 wmove(text_win, scr_vert, (scr_horz - horiz_offset));
867 }
868 }
869 draw_line(scr_vert, scr_horz, point, position, curr_line->line_length);
870 formatted = FALSE;
871 }
872
873 void
874 scanline(unsigned char *pos) /* find the proper horizontal position for the pointer */
875 {
876 int temp;
877 unsigned char *ptr;
878
879 ptr = curr_line->line;
880 temp = 0;
881 while (ptr < pos)
882 {
883 if (*ptr <= 8)
884 temp += 2;
885 else if (*ptr == 9)
886 temp += tabshift(temp);
887 else if ((*ptr >= 10) && (*ptr <= 31))
888 temp += 2;
889 else if ((*ptr >= 32) && (*ptr < 127))
890 temp++;
891 else if (*ptr == 127)
892 temp += 2;
893 else if (!eightbit)
894 temp += 5;
895 else
896 temp++;
897 ptr++;
898 }
899 scr_horz = temp;
900 if ((scr_horz - horiz_offset) > last_col)
901 {
902 horiz_offset = (scr_horz - (scr_horz % 8)) - (COLS - 8);
903 midscreen(scr_vert, point);
904 }
905 else if (scr_horz < horiz_offset)
906 {
907 horiz_offset = max(0, (scr_horz - (scr_horz % 8)));
908 midscreen(scr_vert, point);
909 }
910 }
911
912 int
913 tabshift(int temp_int) /* give the number of spaces to shift */
914 {
915 int leftover;
916
917 leftover = ((temp_int + 1) % 8);
918 if (leftover == 0)
919 return (1);
920 else
921 return (9 - leftover);
922 }
923
924 int
925 out_char(WINDOW *window, int character, int column)
926 /* output non-printing character */
927 {
928 int i1, i2;
929 unsigned char *string;
930 char string2[8];
931
932 if (character == TAB)
933 {
934 i1 = tabshift(column);
935 for (i2 = 0;
936 (i2 < i1) && (((column+i2+1)-horiz_offset) < last_col); i2++)
937 {
938 waddch(window, ' ');
939 }
940 return(i1);
941 }
942 else if ((character >= '\0') && (character < ' '))
943 {
944 string = table[(int) character];
945 }
946 else if ((character < 0) || (character >= 127))
947 {
948 if (character == 127)
949 string = "^?";
950 else if (!eightbit)
951 {
952 sprintf(string2, "<%d>", (character < 0) ? (character + 256) : character);
953 string = string2;
954 }
955 else
956 {
957 waddch(window, (unsigned char)character );
958 return(1);
959 }
960 }
961 else
962 {
963 waddch(window, (unsigned char)character);
964 return(1);
965 }
966 for (i2 = 0; (string[i2] != (char) NULL) && (((column+i2+1)-horiz_offset) < last_col); i2++)
967 waddch(window, string[i2]);
968 return(strlen(string));
969 }
970
971 /* column: the column must be known to provide spacing for tabs */
972 int
973 len_char(int character, int column) /* return the length of the character */
974 {
975 int length;
976
977 if (character == '\t')
978 length = tabshift(column);
979 else if ((character >= 0) && (character < 32))
980 length = 2;
981 else if ((character >= 32) && (character <= 126))
982 length = 1;
983 else if (character == 127)
984 length = 2;
985 else if (((character > 126) || (character < 0)) && (!eightbit))
986 length = 5;
987 else
988 length = 1;
989
990 return(length);
991 }
992
993 /*
994 vertical: current vertical position on screen
995 horiz: current horizontal position on screen
996 ptr: pointer to line
997 t_pos: current position (offset in bytes) from bol
998 length: length (in bytes) of line
999 */
1000 void
1001 draw_line(int vertical, int horiz, unsigned char *ptr, int t_pos, int length)
1002 /* redraw line from current position */
1003 {
1004 int d; /* partial length of special or tab char to display */
1005 unsigned char *temp; /* temporary pointer to position in line */
1006 int abs_column; /* offset in screen units from begin of line */
1007 int column; /* horizontal position on screen */
1008 int row; /* vertical position on screen */
1009 int posit; /* temporary position indicator within line */
1010
1011 abs_column = horiz;
1012 column = horiz - horiz_offset;
1013 row = vertical;
1014 temp = ptr;
1015 d = 0;
1016 posit = t_pos;
1017 if (column < 0)
1018 {
1019 wmove(text_win, row, 0);
1020 wclrtoeol(text_win);
1021 }
1022 while (column < 0)
1023 {
1024 d = len_char(*temp, abs_column);
1025 abs_column += d;
1026 column += d;
1027 posit++;
1028 temp++;
1029 }
1030 wmove(text_win, row, column);
1031 wclrtoeol(text_win);
1032 while ((posit < length) && (column <= last_col))
1033 {
1034 if ((*temp < 32) || (*temp >= 127))
1035 {
1036 column += len_char(*temp, abs_column);
1037 abs_column += out_char(text_win, *temp, abs_column);
1038 }
1039 else
1040 {
1041 abs_column++;
1042 column++;
1043 waddch(text_win, *temp);
1044 }
1045 posit++;
1046 temp++;
1047 }
1048 if (column < last_col)
1049 wclrtoeol(text_win);
1050 wmove(text_win, vertical, (horiz - horiz_offset));
1051 }
1052
1053 void
1054 insert_line(int disp) /* insert new line */
1055 {
1056 int temp_pos;
1057 int temp_pos2;
1058 unsigned char *temp;
1059 unsigned char *extra;
1060 struct text *temp_nod;
1061
1062 text_changes = TRUE;
1063 wmove(text_win, scr_vert, (scr_horz - horiz_offset));
1064 wclrtoeol(text_win);
1065 temp_nod= txtalloc();
1066 temp_nod->line = extra= malloc(10);
1067 temp_nod->line_length = 1;
1068 temp_nod->max_length = 10;
1069 temp_nod->next_line = curr_line->next_line;
1070 renumber_lines(temp_nod, curr_line->line_number + 1);
1071 if (temp_nod->next_line != NULL)
1072 temp_nod->next_line->prev_line = temp_nod;
1073 temp_nod->prev_line = curr_line;
1074 curr_line->next_line = temp_nod;
1075 temp_pos2 = position;
1076 temp = point;
1077 if (temp_pos2 < curr_line->line_length)
1078 {
1079 temp_pos = 1;
1080 while (temp_pos2 < curr_line->line_length)
1081 {
1082 if ((temp_nod->max_length - temp_nod->line_length)< 5)
1083 extra = resiz_line(10, temp_nod, temp_pos);
1084 temp_nod->line_length++;
1085 temp_pos++;
1086 temp_pos2++;
1087 *extra= *temp;
1088 extra++;
1089 temp++;
1090 }
1091 temp=point;
1092 *temp = (char) NULL;
1093 temp = resiz_line((1 - temp_nod->line_length), curr_line, position);
1094 curr_line->line_length = 1 + temp - curr_line->line;
1095 }
1096 curr_line->line_length = position;
1097 curr_line = temp_nod;
1098 *extra = (char) NULL;
1099 position = 1;
1100 point= curr_line->line;
1101 if (disp)
1102 {
1103 if (scr_vert < last_line)
1104 {
1105 scr_vert++;
1106 wclrtoeol(text_win);
1107 wmove(text_win, scr_vert, 0);
1108 winsertln(text_win);
1109 }
1110 else
1111 {
1112 wmove(text_win, 0,0);
1113 wdeleteln(text_win);
1114 wmove(text_win, last_line,0);
1115 wclrtobot(text_win);
1116 }
1117 scr_pos = scr_horz = 0;
1118 if (horiz_offset)
1119 {
1120 horiz_offset = 0;
1121 midscreen(scr_vert, point);
1122 }
1123 draw_line(scr_vert, scr_horz, point, position,
1124 curr_line->line_length);
1125 }
1126 }
1127
1128 struct text *txtalloc(void) /* allocate space for line structure */
1129 {
1130 return((struct text *) malloc(sizeof( struct text)));
1131 }
1132
1133 struct files *name_alloc(void) /* allocate space for file name list node */
1134 {
1135 return((struct files *) malloc(sizeof( struct files)));
1136 }
1137
1138 unsigned char *next_word(unsigned char *string)
1139 /* move to next word in string */
1140 {
1141 while ((*string != (char) NULL) && ((*string != 32) && (*string != 9)))
1142 string++;
1143 while ((*string != (char) NULL) && ((*string == 32) || (*string == 9)))
1144 string++;
1145 return(string);
1146 }
1147
1148 void
1149 prev_word(void) /* move to start of previous word in text */
1150 {
1151 if (position != 1)
1152 {
1153 if ((position != 1) && ((point[-1] == ' ') || (point[-1] == '\t')))
1154 { /* if at the start of a word */
1155 while ((position != 1) && ((*point != ' ') && (*point != '\t')))
1156 left(TRUE);
1157 }
1158 while ((position != 1) && ((*point == ' ') || (*point == '\t')))
1159 left(TRUE);
1160 while ((position != 1) && ((*point != ' ') && (*point != '\t')))
1161 left(TRUE);
1162 if ((position != 1) && ((*point == ' ') || (*point == '\t')))
1163 right(TRUE);
1164 }
1165 else
1166 left(TRUE);
1167 }
1168
1169 void
1170 control(void) /* use control for commands */
1171 {
1172 char *string;
1173
1174 if (in == 1) /* control a */
1175 {
1176 string = get_string(ascii_code_str, TRUE);
1177 if (*string != (char) NULL)
1178 {
1179 in = atoi(string);
1180 wmove(text_win, scr_vert, (scr_horz - horiz_offset));
1181 insert(in);
1182 }
1183 free(string);
1184 }
1185 else if (in == 2) /* control b */
1186 bottom();
1187 else if (in == 3) /* control c */
1188 {
1189 command_prompt();
1190 }
1191 else if (in == 4) /* control d */
1192 down();
1193 else if (in == 5) /* control e */
1194 search_prompt();
1195 else if (in == 6) /* control f */
1196 undel_char();
1197 else if (in == 7) /* control g */
1198 bol();
1199 else if (in == 8) /* control h */
1200 delete(TRUE);
1201 else if (in == 9) /* control i */
1202 ;
1203 else if (in == 10) /* control j */
1204 insert_line(TRUE);
1205 else if (in == 11) /* control k */
1206 del_char();
1207 else if (in == 12) /* control l */
1208 left(TRUE);
1209 else if (in == 13) /* control m */
1210 insert_line(TRUE);
1211 else if (in == 14) /* control n */
1212 move_rel("d", max(5, (last_line - 5)));
1213 else if (in == 15) /* control o */
1214 eol();
1215 else if (in == 16) /* control p */
1216 move_rel("u", max(5, (last_line - 5)));
1217 else if (in == 17) /* control q */
1218 ;
1219 else if (in == 18) /* control r */
1220 right(TRUE);
1221 else if (in == 19) /* control s */
1222 ;
1223 else if (in == 20) /* control t */
1224 top();
1225 else if (in == 21) /* control u */
1226 up();
1227 else if (in == 22) /* control v */
1228 undel_word();
1229 else if (in == 23) /* control w */
1230 del_word();
1231 else if (in == 24) /* control x */
1232 search(TRUE);
1233 else if (in == 25) /* control y */
1234 del_line();
1235 else if (in == 26) /* control z */
1236 undel_line();
1237 else if (in == 27) /* control [ (escape) */
1238 {
1239 menu_op(main_menu);
1240 }
1241 }
1242
1243 /*
1244 | Emacs control-key bindings
1245 */
1246
1247 void
1248 emacs_control(void)
1249 {
1250 char *string;
1251
1252 if (in == 1) /* control a */
1253 bol();
1254 else if (in == 2) /* control b */
1255 left(TRUE);
1256 else if (in == 3) /* control c */
1257 {
1258 command_prompt();
1259 }
1260 else if (in == 4) /* control d */
1261 del_char();
1262 else if (in == 5) /* control e */
1263 eol();
1264 else if (in == 6) /* control f */
1265 right(TRUE);
1266 else if (in == 7) /* control g */
1267 move_rel("u", max(5, (last_line - 5)));
1268 else if (in == 8) /* control h */
1269 delete(TRUE);
1270 else if (in == 9) /* control i */
1271 ;
1272 else if (in == 10) /* control j */
1273 undel_char();
1274 else if (in == 11) /* control k */
1275 del_line();
1276 else if (in == 12) /* control l */
1277 undel_line();
1278 else if (in == 13) /* control m */
1279 insert_line(TRUE);
1280 else if (in == 14) /* control n */
1281 down();
1282 else if (in == 15) /* control o */
1283 {
1284 string = get_string(ascii_code_str, TRUE);
1285 if (*string != (char) NULL)
1286 {
1287 in = atoi(string);
1288 wmove(text_win, scr_vert, (scr_horz - horiz_offset));
1289 insert(in);
1290 }
1291 free(string);
1292 }
1293 else if (in == 16) /* control p */
1294 up();
1295 else if (in == 17) /* control q */
1296 ;
1297 else if (in == 18) /* control r */
1298 undel_word();
1299 else if (in == 19) /* control s */
1300 ;
1301 else if (in == 20) /* control t */
1302 top();
1303 else if (in == 21) /* control u */
1304 bottom();
1305 else if (in == 22) /* control v */
1306 move_rel("d", max(5, (last_line - 5)));
1307 else if (in == 23) /* control w */
1308 del_word();
1309 else if (in == 24) /* control x */
1310 search(TRUE);
1311 else if (in == 25) /* control y */
1312 search_prompt();
1313 else if (in == 26) /* control z */
1314 adv_word();
1315 else if (in == 27) /* control [ (escape) */
1316 {
1317 menu_op(main_menu);
1318 }
1319 }
1320
1321 void
1322 bottom(void) /* go to bottom of file */
1323 {
1324 while (curr_line->next_line != NULL)
1325 curr_line = curr_line->next_line;
1326 point = curr_line->line;
1327 if (horiz_offset)
1328 horiz_offset = 0;
1329 position = 1;
1330 midscreen(last_line, point);
1331 scr_pos = scr_horz;
1332 }
1333
1334 void
1335 top(void) /* go to top of file */
1336 {
1337 while (curr_line->prev_line != NULL)
1338 curr_line = curr_line->prev_line;
1339 point = curr_line->line;
1340 if (horiz_offset)
1341 horiz_offset = 0;
1342 position = 1;
1343 midscreen(0, point);
1344 scr_pos = scr_horz;
1345 }
1346
1347 void
1348 nextline(void) /* move pointers to start of next line */
1349 {
1350 curr_line = curr_line->next_line;
1351 point = curr_line->line;
1352 position = 1;
1353 if (scr_vert == last_line)
1354 {
1355 wmove(text_win, 0,0);
1356 wdeleteln(text_win);
1357 wmove(text_win, last_line,0);
1358 wclrtobot(text_win);
1359 draw_line(last_line,0,point,1,curr_line->line_length);
1360 }
1361 else
1362 scr_vert++;
1363 }
1364
1365 void
1366 prevline(void) /* move pointers to start of previous line*/
1367 {
1368 curr_line = curr_line->prev_line;
1369 point = curr_line->line;
1370 position = 1;
1371 if (scr_vert == 0)
1372 {
1373 winsertln(text_win);
1374 draw_line(0,0,point,1,curr_line->line_length);
1375 }
1376 else
1377 scr_vert--;
1378 while (position < curr_line->line_length)
1379 {
1380 position++;
1381 point++;
1382 }
1383 }
1384
1385 void
1386 left(int disp) /* move left one character */
1387 {
1388 if (point != curr_line->line) /* if not at begin of line */
1389 {
1390 if ((ee_chinese) && (position >= 2) && (*(point - 2) > 127))
1391 {
1392 point--;
1393 position--;
1394 }
1395 point--;
1396 position--;
1397 scanline(point);
1398 wmove(text_win, scr_vert, (scr_horz - horiz_offset));
1399 scr_pos = scr_horz;
1400 }
1401 else if (curr_line->prev_line != NULL)
1402 {
1403 if (!disp)
1404 {
1405 curr_line = curr_line->prev_line;
1406 point = curr_line->line + curr_line->line_length;
1407 position = curr_line->line_length;
1408 return;
1409 }
1410 position = 1;
1411 prevline();
1412 scanline(point);
1413 scr_pos = scr_horz;
1414 wmove(text_win, scr_vert, (scr_horz - horiz_offset));
1415 }
1416 }
1417
1418 void
1419 right(int disp) /* move right one character */
1420 {
1421 if (position < curr_line->line_length)
1422 {
1423 if ((ee_chinese) && (*point > 127) &&
1424 ((curr_line->line_length - position) >= 2))
1425 {
1426 point++;
1427 position++;
1428 }
1429 point++;
1430 position++;
1431 scanline(point);
1432 wmove(text_win, scr_vert, (scr_horz - horiz_offset));
1433 scr_pos = scr_horz;
1434 }
1435 else if (curr_line->next_line != NULL)
1436 {
1437 if (!disp)
1438 {
1439 curr_line = curr_line->next_line;
1440 point = curr_line->line;
1441 position = 1;
1442 return;
1443 }
1444 nextline();
1445 scr_pos = scr_horz = 0;
1446 if (horiz_offset)
1447 {
1448 horiz_offset = 0;
1449 midscreen(scr_vert, point);
1450 }
1451 wmove(text_win, scr_vert, (scr_horz - horiz_offset));
1452 position = 1;
1453 }
1454 }
1455
1456 void
1457 find_pos(void) /* move to the same column as on other line */
1458 {
1459 scr_horz = 0;
1460 position = 1;
1461 while ((scr_horz < scr_pos) && (position < curr_line->line_length))
1462 {
1463 if (*point == 9)
1464 scr_horz += tabshift(scr_horz);
1465 else if (*point < ' ')
1466 scr_horz += 2;
1467 else if ((ee_chinese) && (*point > 127) &&
1468 ((curr_line->line_length - position) >= 2))
1469 {
1470 scr_horz += 2;
1471 point++;
1472 position++;
1473 }
1474 else
1475 scr_horz++;
1476 position++;
1477 point++;
1478 }
1479 if ((scr_horz - horiz_offset) > last_col)
1480 {
1481 horiz_offset = (scr_horz - (scr_horz % 8)) - (COLS - 8);
1482 midscreen(scr_vert, point);
1483 }
1484 else if (scr_horz < horiz_offset)
1485 {
1486 horiz_offset = max(0, (scr_horz - (scr_horz % 8)));
1487 midscreen(scr_vert, point);
1488 }
1489 wmove(text_win, scr_vert, (scr_horz - horiz_offset));
1490 }
1491
1492 void
1493 up(void) /* move up one line */
1494 {
1495 if (curr_line->prev_line != NULL)
1496 {
1497 prevline();
1498 point = curr_line->line;
1499 find_pos();
1500 }
1501 }
1502
1503 void
1504 down(void) /* move down one line */
1505 {
1506 if (curr_line->next_line != NULL)
1507 {
1508 nextline();
1509 find_pos();
1510 }
1511 }
1512
1513 void
1514 function_key(void) /* process function key */
1515 {
1516 if (in == KEY_LEFT)
1517 left(TRUE);
1518 else if (in == KEY_RIGHT)
1519 right(TRUE);
1520 else if (in == KEY_HOME)
1521 bol();
1522 else if (in == KEY_END)
1523 eol();
1524 else if ( in == KEY_UP)
1525 up();
1526 else if (in == KEY_DOWN)
1527 down();
1528 else if (in == KEY_NPAGE)
1529 move_rel("d", max( 5, (last_line - 5)));
1530 else if (in == KEY_PPAGE)
1531 move_rel("u", max(5, (last_line - 5)));
1532 else if (in == KEY_DL)
1533 del_line();
1534 else if (in == KEY_DC)
1535 del_char();
1536 else if (in == KEY_BACKSPACE)
1537 delete(TRUE);
1538 else if (in == KEY_IL)
1539 { /* insert a line before current line */
1540 insert_line(TRUE);
1541 left(TRUE);
1542 }
1543 else if (in == KEY_F(1))
1544 gold = !gold;
1545 else if (in == KEY_F(2))
1546 {
1547 if (gold)
1548 {
1549 gold = FALSE;
1550 undel_line();
1551 }
1552 else
1553 undel_char();
1554 }
1555 else if (in == KEY_F(3))
1556 {
1557 if (gold)
1558 {
1559 gold = FALSE;
1560 undel_word();
1561 }
1562 else
1563 del_word();
1564 }
1565 else if (in == KEY_F(4))
1566 {
1567 if (gold)
1568 {
1569 gold = FALSE;
1570 paint_info_win();
1571 midscreen(scr_vert, point);
1572 }
1573 else
1574 adv_word();
1575 }
1576 else if (in == KEY_F(5))
1577 {
1578 if (gold)
1579 {
1580 gold = FALSE;
1581 search_prompt();
1582 }
1583 else
1584 search(TRUE);
1585 }
1586 else if (in == KEY_F(6))
1587 {
1588 if (gold)
1589 {
1590 gold = FALSE;
1591 bottom();
1592 }
1593 else
1594 top();
1595 }
1596 else if (in == KEY_F(7))
1597 {
1598 if (gold)
1599 {
1600 gold = FALSE;
1601 eol();
1602 }
1603 else
1604 bol();
1605 }
1606 else if (in == KEY_F(8))
1607 {
1608 if (gold)
1609 {
1610 gold = FALSE;
1611 command_prompt();
1612 }
1613 else
1614 adv_line();
1615 }
1616 }
1617
1618 void
1619 print_buffer(void)
1620 {
1621 char buffer[256];
1622
1623 sprintf(buffer, ">!%s", print_command);
1624 wmove(com_win, 0, 0);
1625 wclrtoeol(com_win);
1626 wprintw(com_win, printer_msg_str, print_command);
1627 wrefresh(com_win);
1628 command(buffer);
1629 }
1630
1631 void
1632 command_prompt(void)
1633 {
1634 char *cmd_str;
1635 int result;
1636
1637 info_type = COMMANDS;
1638 paint_info_win();
1639 cmd_str = get_string(command_str, TRUE);
1640 if ((result = unique_test(cmd_str, commands)) != 1)
1641 {
1642 werase(com_win);
1643 wmove(com_win, 0, 0);
1644 if (result == 0)
1645 wprintw(com_win, unkn_cmd_str, cmd_str);
1646 else
1647 wprintw(com_win, non_unique_cmd_msg);
1648
1649 wrefresh(com_win);
1650
1651 info_type = CONTROL_KEYS;
1652 paint_info_win();
1653
1654 if (cmd_str != NULL)
1655 free(cmd_str);
1656 return;
1657 }
1658 command(cmd_str);
1659 wrefresh(com_win);
1660 wmove(text_win, scr_vert, (scr_horz - horiz_offset));
1661 info_type = CONTROL_KEYS;
1662 paint_info_win();
1663 if (cmd_str != NULL)
1664 free(cmd_str);
1665 }
1666
1667 void
1668 command(char *cmd_str1) /* process commands from keyboard */
1669 {
1670 char *cmd_str2 = NULL;
1671 char *cmd_str = cmd_str1;
1672
1673 clear_com_win = TRUE;
1674 if (compare(cmd_str, HELP, FALSE))
1675 help();
1676 else if (compare(cmd_str, WRITE, FALSE))
1677 {
1678 if (restrict_mode())
1679 {
1680 return;
1681 }
1682 cmd_str = next_word(cmd_str);
1683 if (*cmd_str == (char) NULL)
1684 {
1685 cmd_str = cmd_str2 = get_string(file_write_prompt_str, TRUE);
1686 }
1687 tmp_file = resolve_name(cmd_str);
1688 write_file(tmp_file);
1689 if (tmp_file != cmd_str)
1690 free(tmp_file);
1691 }
1692 else if (compare(cmd_str, READ, FALSE))
1693 {
1694 if (restrict_mode())
1695 {
1696 return;
1697 }
1698 cmd_str = next_word(cmd_str);
1699 if (*cmd_str == (char) NULL)
1700 {
1701 cmd_str = cmd_str2 = get_string(file_read_prompt_str, TRUE);
1702 }
1703 tmp_file = cmd_str;
1704 recv_file = TRUE;
1705 tmp_file = resolve_name(cmd_str);
1706 check_fp();
1707 if (tmp_file != cmd_str)
1708 free(tmp_file);
1709 }
1710 else if (compare(cmd_str, LINE, FALSE))
1711 {
1712 wmove(com_win, 0, 0);
1713 wclrtoeol(com_win);
1714 wprintw(com_win, line_num_str, curr_line->line_number);
1715 wprintw(com_win, line_len_str, curr_line->line_length);
1716 }
1717 else if (compare(cmd_str, FILE_str, FALSE))
1718 {
1719 wmove(com_win, 0, 0);
1720 wclrtoeol(com_win);
1721 if (in_file_name == NULL)
1722 wprintw(com_win, no_file_string);
1723 else
1724 wprintw(com_win, current_file_str, in_file_name);
1725 }
1726 else if ((*cmd_str >= '0') && (*cmd_str <= '9'))
1727 goto_line(cmd_str);
1728 else if (compare(cmd_str, CHARACTER, FALSE))
1729 {
1730 wmove(com_win, 0, 0);
1731 wclrtoeol(com_win);
1732 wprintw(com_win, char_str, *point);
1733 }
1734 else if (compare(cmd_str, REDRAW, FALSE))
1735 redraw();
1736 else if (compare(cmd_str, RESEQUENCE, FALSE))
1737 {
1738 tmp_line = first_line->next_line;
1739 while (tmp_line != NULL)
1740 {
1741 tmp_line->line_number = tmp_line->prev_line->line_number + 1;
1742 tmp_line = tmp_line->next_line;
1743 }
1744 }
1745 else if (compare(cmd_str, AUTHOR, FALSE))
1746 {
1747 wmove(com_win, 0, 0);
1748 wclrtoeol(com_win);
1749 wprintw(com_win, "written by Hugh Mahon");
1750 }
1751 else if (compare(cmd_str, VERSION, FALSE))
1752 {
1753 wmove(com_win, 0, 0);
1754 wclrtoeol(com_win);
1755 wprintw(com_win, "%s", version);
1756 }
1757 else if (compare(cmd_str, CASE, FALSE))
1758 case_sen = TRUE;
1759 else if (compare(cmd_str, NOCASE, FALSE))
1760 case_sen = FALSE;
1761 else if (compare(cmd_str, EXPAND, FALSE))
1762 expand_tabs = TRUE;
1763 else if (compare(cmd_str, NOEXPAND, FALSE))
1764 expand_tabs = FALSE;
1765 else if (compare(cmd_str, Exit_string, FALSE))
1766 finish();
1767 else if (compare(cmd_str, chinese_cmd, FALSE))
1768 {
1769 ee_chinese = TRUE;
1770 #ifdef NCURSE
1771 nc_setattrib(A_NC_BIG5);
1772 #endif /* NCURSE */
1773 }
1774 else if (compare(cmd_str, nochinese_cmd, FALSE))
1775 {
1776 ee_chinese = FALSE;
1777 #ifdef NCURSE
1778 nc_clearattrib(A_NC_BIG5);
1779 #endif /* NCURSE */
1780 }
1781 else if (compare(cmd_str, QUIT_string, FALSE))
1782 quit(0);
1783 else if (*cmd_str == '!')
1784 {
1785 cmd_str++;
1786 if ((*cmd_str == ' ') || (*cmd_str == 9))
1787 cmd_str = next_word(cmd_str);
1788 sh_command(cmd_str);
1789 }
1790 else if ((*cmd_str == '<') && (!in_pipe))
1791 {
1792 in_pipe = TRUE;
1793 shell_fork = FALSE;
1794 cmd_str++;
1795 if ((*cmd_str == ' ') || (*cmd_str == '\t'))
1796 cmd_str = next_word(cmd_str);
1797 command(cmd_str);
1798 in_pipe = FALSE;
1799 shell_fork = TRUE;
1800 }
1801 else if ((*cmd_str == '>') && (!out_pipe))
1802 {
1803 out_pipe = TRUE;
1804 cmd_str++;
1805 if ((*cmd_str == ' ') || (*cmd_str == '\t'))
1806 cmd_str = next_word(cmd_str);
1807 command(cmd_str);
1808 out_pipe = FALSE;
1809 }
1810 else
1811 {
1812 wmove(com_win, 0, 0);
1813 wclrtoeol(com_win);
1814 wprintw(com_win, unkn_cmd_str, cmd_str);
1815 }
1816 if (cmd_str2 != NULL)
1817 free(cmd_str2);
1818 }
1819
1820 int
1821 scan(char *line, int offset, int column)
1822 /* determine horizontal position for get_string */
1823 {
1824 char *stemp;
1825 int i;
1826 int j;
1827
1828 stemp = line;
1829 i = 0;
1830 j = column;
1831 while (i < offset)
1832 {
1833 i++;
1834 j += len_char(*stemp, j);
1835 stemp++;
1836 }
1837 return(j);
1838 }
1839
1840 /*
1841 prompt: string containing user prompt message
1842 advance: if true, skip leading spaces and tabs
1843 */
1844 char *
1845 get_string(char *prompt, int advance)
1846 /* read string from input on command line */
1847 {
1848 char *string;
1849 char *tmp_string;
1850 char *nam_str;
1851 char *g_point;
1852 int tmp_int;
1853 int g_horz, g_position, g_pos;
1854 int esc_flag;
1855
1856 g_point = tmp_string = malloc(512);
1857 wmove(com_win,0,0);
1858 wclrtoeol(com_win);
1859 waddstr(com_win, prompt);
1860 wrefresh(com_win);
1861 nam_str = tmp_string;
1862 clear_com_win = TRUE;
1863 g_horz = g_position = scan(prompt, strlen(prompt), 0);
1864 g_pos = 0;
1865 do
1866 {
1867 esc_flag = FALSE;
1868 in = wgetch(com_win);
1869 if (in == -1)
1870 continue;
1871 if (((in == 8) || (in == 127) || (in == KEY_BACKSPACE)) && (g_pos > 0))
1872 {
1873 tmp_int = g_horz;
1874 g_pos--;
1875 g_horz = scan(g_point, g_pos, g_position);
1876 tmp_int = tmp_int - g_horz;
1877 for (; 0 < tmp_int; tmp_int--)
1878 {
1879 if ((g_horz+tmp_int) < (last_col - 1))
1880 {
1881 waddch(com_win, '\010');
1882 waddch(com_win, ' ');
1883 waddch(com_win, '\010');
1884 }
1885 }
1886 nam_str--;
1887 }
1888 else if ((in != 8) && (in != 127) && (in != '\n') && (in != '\r') && (in < 256))
1889 {
1890 if (in == '\026') /* control-v, accept next character verbatim */
1891 { /* allows entry of ^m, ^j, and ^h */
1892 esc_flag = TRUE;
1893 in = wgetch(com_win);
1894 if (in == -1)
1895 continue;
1896 }
1897 *nam_str = in;
1898 g_pos++;
1899 if (((in < ' ') || (in > 126)) && (g_horz < (last_col - 1)))
1900 g_horz += out_char(com_win, in, g_horz);
1901 else
1902 {
1903 g_horz++;
1904 if (g_horz < (last_col - 1))
1905 waddch(com_win, in);
1906 }
1907 nam_str++;
1908 }
1909 wrefresh(com_win);
1910 if (esc_flag)
1911 in = (char) NULL;
1912 } while ((in != '\n') && (in != '\r'));
1913 *nam_str = (char) NULL;
1914 nam_str = tmp_string;
1915 if (((*nam_str == ' ') || (*nam_str == 9)) && (advance))
1916 nam_str = next_word(nam_str);
1917 string = malloc(strlen(nam_str) + 1);
1918 strcpy(string, nam_str);
1919 free(tmp_string);
1920 wrefresh(com_win);
1921 return(string);
1922 }
1923
1924 int
1925 compare(char *string1, char *string2, int sensitive) /* compare two strings */
1926 {
1927 char *strng1;
1928 char *strng2;
1929 int tmp;
1930 int equal;
1931
1932 strng1 = string1;
1933 strng2 = string2;
1934 tmp = 0;
1935 if ((strng1 == NULL) || (strng2 == NULL) || (*strng1 == (char) NULL) || (*strng2 == (char) NULL))
1936 return(FALSE);
1937 equal = TRUE;
1938 while (equal)
1939 {
1940 if (sensitive)
1941 {
1942 if (*strng1 != *strng2)
1943 equal = FALSE;
1944 }
1945 else
1946 {
1947 if (toupper(*strng1) != toupper(*strng2))
1948 equal = FALSE;
1949 }
1950 strng1++;
1951 strng2++;
1952 if ((*strng1 == (char) NULL) || (*strng2 == (char) NULL) || (*strng1 == ' ') || (*strng2 == ' '))
1953 break;
1954 tmp++;
1955 }
1956 return(equal);
1957 }
1958
1959 void
1960 goto_line(char *cmd_str)
1961 {
1962 int number;
1963 int i;
1964 char *ptr;
1965 char *direction = NULL;
1966 struct text *t_line;
1967
1968 ptr = cmd_str;
1969 i= 0;
1970 while ((*ptr >='0') && (*ptr <= '9'))
1971 {
1972 i= i * 10 + (*ptr - '0');
1973 ptr++;
1974 }
1975 number = i;
1976 i = 0;
1977 t_line = curr_line;
1978 while ((t_line->line_number > number) && (t_line->prev_line != NULL))
1979 {
1980 i++;
1981 t_line = t_line->prev_line;
1982 direction = "u";
1983 }
1984 while ((t_line->line_number < number) && (t_line->next_line != NULL))
1985 {
1986 i++;
1987 direction = "d";
1988 t_line = t_line->next_line;
1989 }
1990 if ((i < 30) && (i > 0))
1991 {
1992 move_rel(direction, i);
1993 }
1994 else
1995 {
1996 curr_line = t_line;
1997 point = curr_line->line;
1998 position = 1;
1999 midscreen((last_line / 2), point);
2000 scr_pos = scr_horz;
2001 }
2002 wmove(com_win, 0, 0);
2003 wclrtoeol(com_win);
2004 wprintw(com_win, line_num_str, curr_line->line_number);
2005 wmove(text_win, scr_vert, (scr_horz - horiz_offset));
2006 }
2007
2008 void
2009 midscreen(int line, unsigned char *pnt)
2010 /* put current line in middle of screen */
2011 {
2012 struct text *mid_line;
2013 int i;
2014
2015 line = min(line, last_line);
2016 mid_line = curr_line;
2017 for (i = 0; ((i < line) && (curr_line->prev_line != NULL)); i++)
2018 curr_line = curr_line->prev_line;
2019 scr_vert = scr_horz = 0;
2020 wmove(text_win, 0, 0);
2021 draw_screen();
2022 scr_vert = i;
2023 curr_line = mid_line;
2024 scanline(pnt);
2025 wmove(text_win, scr_vert, (scr_horz - horiz_offset));
2026 }
2027
2028 void
2029 get_options(int numargs, char **arguments)
2030 /* get arguments from command line */
2031 {
2032 char *buff;
2033 int count;
2034 struct files *temp_names = NULL;
2035 char *name;
2036 char *ptr;
2037
2038 /*
2039 | see if editor was invoked as 'ree' (restricted mode)
2040 */
2041
2042 if (!(name = strrchr(arguments[0], '/')))
2043 name = arguments[0];
2044 else
2045 name++;
2046 if (!strcmp(name, "ree"))
2047 restricted = TRUE;
2048
2049 top_of_stack = NULL;
2050 input_file = FALSE;
2051 recv_file = FALSE;
2052 count = 1;
2053 while (count < numargs)
2054 {
2055 buff = arguments[count];
2056 if (!strcmp("-i", buff))
2057 {
2058 info_window = FALSE;
2059 }
2060 else if (!strcmp("-e", buff))
2061 {
2062 expand_tabs = FALSE;
2063 }
2064 else if (!strcmp("-h", buff))
2065 {
2066 nohighlight = TRUE;
2067 }
2068 else if (!strcmp("-?", buff))
2069 {
2070 fprintf(stderr, usage0, arguments[0]);
2071 fprintf(stderr, usage1);
2072 fprintf(stderr, usage2);
2073 fprintf(stderr, usage3);
2074 fprintf(stderr, usage4);
2075 exit(1);
2076 }
2077 else if (*buff == '+')
2078 {
2079 buff++;
2080 start_at_line = buff;
2081 }
2082
2083 else
2084 {
2085 if (top_of_stack == NULL)
2086 {
2087 temp_names = top_of_stack = name_alloc();
2088 }
2089 else
2090 {
2091 temp_names->next_name = name_alloc();
2092 temp_names = temp_names->next_name;
2093 }
2094 ptr = temp_names->name = malloc(strlen(buff) + 1);
2095 while (*buff != (char) NULL)
2096 {
2097 *ptr = *buff;
2098 buff++;
2099 ptr++;
2100 }
2101 *ptr = (char) NULL;
2102 temp_names->next_name = NULL;
2103 input_file = TRUE;
2104 recv_file = TRUE;
2105 }
2106 count++;
2107 }
2108 }
2109
2110 void
2111 check_fp(void) /* open or close files according to flags */
2112 {
2113 int line_num;
2114 int temp;
2115 struct stat buf;
2116
2117 clear_com_win = TRUE;
2118 tmp_vert = scr_vert;
2119 tmp_horz = scr_horz;
2120 tmp_line = curr_line;
2121 if (input_file)
2122 {
2123 in_file_name = tmp_file = top_of_stack->name;
2124 top_of_stack = top_of_stack->next_name;
2125 }
2126 temp = stat(tmp_file, &buf);
2127 buf.st_mode &= ~07777;
2128 if ((temp != -1) && (buf.st_mode != 0100000) && (buf.st_mode != 0))
2129 {
2130 wprintw(com_win, file_is_dir_msg, tmp_file);
2131 wrefresh(com_win);
2132 if (input_file)
2133 {
2134 quit(0);
2135 return;
2136 }
2137 else
2138 return;
2139 }
2140 if ((get_fd = open(tmp_file, O_RDONLY)) == -1)
2141 {
2142 wmove(com_win, 0, 0);
2143 wclrtoeol(com_win);
2144 if (input_file)
2145 wprintw(com_win, new_file_msg, tmp_file);
2146 else
2147 wprintw(com_win, cant_open_msg, tmp_file);
2148 wrefresh(com_win);
2149 wmove(text_win, scr_vert, (scr_horz - horiz_offset));
2150 wrefresh(text_win);
2151 recv_file = FALSE;
2152 input_file = FALSE;
2153 return;
2154 }
2155 else
2156 get_file(tmp_file);
2157
2158 recv_file = FALSE;
2159 line_num = curr_line->line_number;
2160 scr_vert = tmp_vert;
2161 scr_horz = tmp_horz;
2162 if (input_file)
2163 curr_line= first_line;
2164 else
2165 curr_line = tmp_line;
2166 point = curr_line->line;
2167 draw_screen();
2168 if (input_file)
2169 {
2170 input_file = FALSE;
2171 if (start_at_line != NULL)
2172 {
2173 line_num = atoi(start_at_line) - 1;
2174 move_rel("d", line_num);
2175 line_num = 0;
2176 start_at_line = NULL;
2177 }
2178 }
2179 else
2180 {
2181 wmove(com_win, 0, 0);
2182 wclrtoeol(com_win);
2183 text_changes = TRUE;
2184 if ((tmp_file != NULL) && (*tmp_file != (char) NULL))
2185 wprintw(com_win, file_read_fin_msg, tmp_file);
2186 }
2187 wrefresh(com_win);
2188 wmove(text_win, scr_vert, (scr_horz - horiz_offset));
2189 wrefresh(text_win);
2190 }
2191
2192 void
2193 get_file(char *file_name) /* read specified file into current buffer */
2194 {
2195 int can_read; /* file has at least one character */
2196 int length; /* length of line read by read */
2197 int append; /* should text be appended to current line */
2198 struct text *temp_line;
2199 char ro_flag = FALSE;
2200
2201 if (recv_file) /* if reading a file */
2202 {
2203 wmove(com_win, 0, 0);
2204 wclrtoeol(com_win);
2205 wprintw(com_win, reading_file_msg, file_name);
2206 if (access(file_name, 2)) /* check permission to write */
2207 {
2208 if ((errno == ENOTDIR) || (errno == EACCES) || (errno == EROFS) || (errno == ETXTBSY) || (errno == EFAULT))
2209 {
2210 wprintw(com_win, read_only_msg);
2211 ro_flag = TRUE;
2212 }
2213 }
2214 wrefresh(com_win);
2215 }
2216 if (curr_line->line_length > 1) /* if current line is not blank */
2217 {
2218 insert_line(FALSE);
2219 left(FALSE);
2220 append = FALSE;
2221 }
2222 else
2223 append = TRUE;
2224 can_read = FALSE; /* test if file has any characters */
2225 while (((length = read(get_fd, in_string, 512)) != 0) && (length != -1))
2226 {
2227 can_read = TRUE; /* if set file has at least 1 character */
2228 get_line(length, in_string, &append);
2229 }
2230 if ((can_read) && (curr_line->line_length == 1))
2231 {
2232 temp_line = curr_line->prev_line;
2233 temp_line->next_line = curr_line->next_line;
2234 if (temp_line->next_line != NULL)
2235 temp_line->next_line->prev_line = temp_line;
2236 if (curr_line->line != NULL)
2237 free(curr_line->line);
2238 free(curr_line);
2239 curr_line = temp_line;
2240 }
2241 if (input_file) /* if this is the file to be edited display number of lines */
2242 {
2243 wmove(com_win, 0, 0);
2244 wclrtoeol(com_win);
2245 wprintw(com_win, file_read_lines_msg, in_file_name, curr_line->line_number);
2246 if (ro_flag)
2247 wprintw(com_win, read_only_msg);
2248 wrefresh(com_win);
2249 }
2250 else if (can_read) /* not input_file and file is non-zero size */
2251 text_changes = TRUE;
2252
2253 if (recv_file) /* if reading a file */
2254 {
2255 in = EOF;
2256 }
2257 }
2258
2259 /*
2260 length: length of string read by read
2261 in_string: string read by read
2262 append: TRUE if must append more text to end of current line
2263 */
2264 void
2265 get_line(int length, unsigned char *in_string, int *append)
2266 /* read string and split into lines */
2267 {
2268 unsigned char *str1;
2269 unsigned char *str2;
2270 int num; /* offset from start of string */
2271 int char_count; /* length of new line (or added portion */
2272 int temp_counter; /* temporary counter value */
2273 struct text *tline; /* temporary pointer to new line */
2274 int first_time; /* if TRUE, the first time through the loop */
2275
2276 str2 = in_string;
2277 num = 0;
2278 first_time = TRUE;
2279 while (num < length)
2280 {
2281 if (!first_time)
2282 {
2283 if (num < length)
2284 {
2285 str2++;
2286 num++;
2287 }
2288 }
2289 else
2290 first_time = FALSE;
2291 str1 = str2;
2292 char_count = 1;
2293 /* find end of line */
2294 while ((*str2 != '\n') && (num < length))
2295 {
2296 str2++;
2297 num++;
2298 char_count++;
2299 }
2300 if (!(*append)) /* if not append to current line, insert new one */
2301 {
2302 tline = txtalloc(); /* allocate data structure for next line */
2303 tline->next_line = curr_line->next_line;
2304 renumber_lines(tline, curr_line->line_number + 1);
2305 tline->prev_line = curr_line;
2306 curr_line->next_line = tline;
2307 if (tline->next_line != NULL)
2308 tline->next_line->prev_line = tline;
2309 curr_line = tline;
2310 curr_line->line = point = (unsigned char *) malloc(char_count);
2311 curr_line->line_length = char_count;
2312 curr_line->max_length = char_count;
2313 }
2314 else
2315 {
2316 point = resiz_line(char_count, curr_line, curr_line->line_length);
2317 curr_line->line_length += (char_count - 1);
2318 }
2319 for (temp_counter = 1; temp_counter < char_count; temp_counter++)
2320 {
2321 *point = *str1;
2322 point++;
2323 str1++;
2324 }
2325 *point = (char) NULL;
2326 *append = FALSE;
2327 if ((num == length) && (*str2 != '\n'))
2328 *append = TRUE;
2329 }
2330 }
2331
2332 void
2333 draw_screen(void) /* redraw the screen from current postion */
2334 {
2335 struct text *temp_line;
2336 unsigned char *line_out;
2337 int temp_vert;
2338
2339 temp_line = curr_line;
2340 temp_vert = scr_vert;
2341 wclrtobot(text_win);
2342 while ((temp_line != NULL) && (temp_vert <= last_line))
2343 {
2344 line_out = temp_line->line;
2345 draw_line(temp_vert, 0, line_out, 1, temp_line->line_length);
2346 temp_vert++;
2347 temp_line = temp_line->next_line;
2348 }
2349 wmove(text_win, temp_vert, 0);
2350 wmove(text_win, scr_vert, (scr_horz - horiz_offset));
2351 }
2352
2353 void
2354 finish(void) /* prepare to exit edit session */
2355 {
2356 char *file_name = in_file_name;
2357
2358 /*
2359 | changes made here should be reflected in the 'save'
2360 | portion of file_op()
2361 */
2362
2363 if ((file_name == NULL) || (*file_name == (char) NULL))
2364 file_name = get_string(save_file_name_prompt, TRUE);
2365
2366 if ((file_name == NULL) || (*file_name == (char) NULL))
2367 {
2368 wmove(com_win, 0, 0);
2369 wprintw(com_win, file_not_saved_msg);
2370 wclrtoeol(com_win);
2371 wrefresh(com_win);
2372 clear_com_win = TRUE;
2373 return;
2374 }
2375
2376 tmp_file = resolve_name(file_name);
2377 if (tmp_file != file_name)
2378 {
2379 free(file_name);
2380 file_name = tmp_file;
2381 }
2382
2383 if (write_file(file_name))
2384 {
2385 text_changes = FALSE;
2386 quit(0);
2387 }
2388 }
2389
2390 int
2391 quit(int noverify) /* exit editor */
2392 {
2393 char *ans;
2394
2395 touchwin(text_win);
2396 wrefresh(text_win);
2397 if ((text_changes) && (!noverify))
2398 {
2399 ans = get_string(changes_made_prompt, TRUE);
2400 if (toupper(*ans) == toupper(*yes_char))
2401 text_changes = FALSE;
2402 else
2403 return(0);
2404 free(ans);
2405 }
2406 if (top_of_stack == NULL)
2407 {
2408 if (info_window)
2409 wrefresh(info_win);
2410 wrefresh(com_win);
2411 resetty();
2412 endwin();
2413 putchar('\n');
2414 exit(0);
2415 }
2416 else
2417 {
2418 delete_text();
2419 recv_file = TRUE;
2420 input_file = TRUE;
2421 check_fp();
2422 text_changes = FALSE;
2423 }
2424 return(0);
2425 }
2426
2427 void
2428 edit_abort(int arg)
2429 {
2430 wrefresh(com_win);
2431 resetty();
2432 endwin();
2433 putchar('\n');
2434 exit(1);
2435 }
2436
2437 void
2438 delete_text(void)
2439 {
2440 while (curr_line->next_line != NULL)
2441 curr_line = curr_line->next_line;
2442 while (curr_line != first_line)
2443 {
2444 free(curr_line->line);
2445 curr_line = curr_line->prev_line;
2446 free(curr_line->next_line);
2447 }
2448 curr_line->next_line = NULL;
2449 *curr_line->line = (char) NULL;
2450 curr_line->line_length = 1;
2451 curr_line->line_number = 1;
2452 point = curr_line->line;
2453 scr_pos = scr_vert = scr_horz = 0;
2454 position = 1;
2455 }
2456
2457 int
2458 write_file(char *file_name)
2459 {
2460 char cr;
2461 char *tmp_point;
2462 struct text *out_line;
2463 int lines, charac;
2464 int temp_pos;
2465 int write_flag = TRUE;
2466
2467 charac = lines = 0;
2468 if ((in_file_name == NULL) || strcmp(in_file_name, file_name))
2469 {
2470 if ((temp_fp = fopen(file_name, "r")))
2471 {
2472 tmp_point = get_string(file_exists_prompt, TRUE);
2473 if (toupper(*tmp_point) == toupper(*yes_char))
2474 write_flag = TRUE;
2475 else
2476 write_flag = FALSE;
2477 fclose(temp_fp);
2478 free(tmp_point);
2479 }
2480 }
2481
2482 clear_com_win = TRUE;
2483
2484 if (write_flag)
2485 {
2486 if ((temp_fp = fopen(file_name, "w")) == NULL)
2487 {
2488 clear_com_win = TRUE;
2489 wmove(com_win,0,0);
2490 wclrtoeol(com_win);
2491 wprintw(com_win, create_file_fail_msg, file_name);
2492 wrefresh(com_win);
2493 return(FALSE);
2494 }
2495 else
2496 {
2497 wmove(com_win,0,0);
2498 wclrtoeol(com_win);
2499 wprintw(com_win, writing_file_msg, file_name);
2500 wrefresh(com_win);
2501 cr = '\n';
2502 out_line = first_line;
2503 while (out_line != NULL)
2504 {
2505 temp_pos = 1;
2506 tmp_point= out_line->line;
2507 while (temp_pos < out_line->line_length)
2508 {
2509 putc(*tmp_point, temp_fp);
2510 tmp_point++;
2511 temp_pos++;
2512 }
2513 charac += out_line->line_length;
2514 out_line = out_line->next_line;
2515 putc(cr, temp_fp);
2516 lines++;
2517 }
2518 fclose(temp_fp);
2519 wmove(com_win,0,0);
2520 wclrtoeol(com_win);
2521 wprintw(com_win, file_written_msg, file_name, lines, charac);
2522 wrefresh(com_win);
2523 return(TRUE);
2524 }
2525 }
2526 else
2527 return(FALSE);
2528 }
2529
2530 int
2531 search(int display_message) /* search for string in srch_str */
2532 {
2533 int lines_moved;
2534 int iter;
2535 int found;
2536
2537 if ((srch_str == NULL) || (*srch_str == (char) NULL))
2538 return(FALSE);
2539 if (display_message)
2540 {
2541 wmove(com_win, 0, 0);
2542 wclrtoeol(com_win);
2543 wprintw(com_win, searching_msg);
2544 wrefresh(com_win);
2545 clear_com_win = TRUE;
2546 }
2547 lines_moved = 0;
2548 found = FALSE;
2549 srch_line = curr_line;
2550 srch_1 = point;
2551 if (position < curr_line->line_length)
2552 srch_1++;
2553 iter = position + 1;
2554 while ((!found) && (srch_line != NULL))
2555 {
2556 while ((iter < srch_line->line_length) && (!found))
2557 {
2558 srch_2 = srch_1;
2559 if (case_sen) /* if case sensitive */
2560 {
2561 srch_3 = srch_str;
2562 while ((*srch_2 == *srch_3) && (*srch_3 != (char) NULL))
2563 {
2564 found = TRUE;
2565 srch_2++;
2566 srch_3++;
2567 } /* end while */
2568 }
2569 else /* if not case sensitive */
2570 {
2571 srch_3 = u_srch_str;
2572 while ((toupper(*srch_2) == *srch_3) && (*srch_3 != (char) NULL))
2573 {
2574 found = TRUE;
2575 srch_2++;
2576 srch_3++;
2577 }
2578 } /* end else */
2579 if (!((*srch_3 == (char) NULL) && (found)))
2580 {
2581 found = FALSE;
2582 if (iter < srch_line->line_length)
2583 srch_1++;
2584 iter++;
2585 }
2586 }
2587 if (!found)
2588 {
2589 srch_line = srch_line->next_line;
2590 if (srch_line != NULL)
2591 srch_1 = srch_line->line;
2592 iter = 1;
2593 lines_moved++;
2594 }
2595 }
2596 if (found)
2597 {
2598 if (display_message)
2599 {
2600 wmove(com_win, 0, 0);
2601 wclrtoeol(com_win);
2602 wrefresh(com_win);
2603 }
2604 if (lines_moved == 0)
2605 {
2606 while (position < iter)
2607 right(TRUE);
2608 }
2609 else
2610 {
2611 if (lines_moved < 30)
2612 {
2613 move_rel("d", lines_moved);
2614 while (position < iter)
2615 right(TRUE);
2616 }
2617 else
2618 {
2619 curr_line = srch_line;
2620 point = srch_1;
2621 position = iter;
2622 scanline(point);
2623 scr_pos = scr_horz;
2624 midscreen((last_line / 2), point);
2625 }
2626 }
2627 }
2628 else
2629 {
2630 if (display_message)
2631 {
2632 wmove(com_win, 0, 0);
2633 wclrtoeol(com_win);
2634 wprintw(com_win, str_not_found_msg, srch_str);
2635 wrefresh(com_win);
2636 }
2637 wmove(text_win, scr_vert,(scr_horz - horiz_offset));
2638 }
2639 return(found);
2640 }
2641
2642 void
2643 search_prompt(void) /* prompt and read search string (srch_str) */
2644 {
2645 if (srch_str != NULL)
2646 free(srch_str);
2647 if ((u_srch_str != NULL) && (*u_srch_str != (char) NULL))
2648 free(u_srch_str);
2649 srch_str = get_string(search_prompt_str, FALSE);
2650 gold = FALSE;
2651 srch_3 = srch_str;
2652 srch_1 = u_srch_str = malloc(strlen(srch_str) + 1);
2653 while (*srch_3 != (char) NULL)
2654 {
2655 *srch_1 = toupper(*srch_3);
2656 srch_1++;
2657 srch_3++;
2658 }
2659 *srch_1 = (char) NULL;
2660 search(TRUE);
2661 }
2662
2663 void
2664 del_char(void) /* delete current character */
2665 {
2666 in = 8; /* backspace */
2667 if (position < curr_line->line_length) /* if not end of line */
2668 {
2669 if ((ee_chinese) && (*point > 127) &&
2670 ((curr_line->line_length - position) >= 2))
2671 {
2672 point++;
2673 position++;
2674 }
2675 position++;
2676 point++;
2677 scanline(point);
2678 delete(TRUE);
2679 }
2680 else
2681 {
2682 right(FALSE);
2683 delete(FALSE);
2684 }
2685 }
2686
2687 void
2688 undel_char(void) /* undelete last deleted character */
2689 {
2690 if (d_char[0] == '\n') /* insert line if last del_char deleted eol */
2691 insert_line(TRUE);
2692 else
2693 {
2694 in = d_char[0];
2695 insert(in);
2696 if (d_char[1] != (unsigned char) NULL)
2697 {
2698 in = d_char[1];
2699 insert(in);
2700 }
2701 }
2702 }
2703
2704 void
2705 del_word(void) /* delete word in front of cursor */
2706 {
2707 int tposit;
2708 int difference;
2709 unsigned char *d_word2;
2710 unsigned char *d_word3;
2711 unsigned char tmp_char[3];
2712
2713 if (d_word != NULL)
2714 free(d_word);
2715 d_word = malloc(curr_line->line_length);
2716 tmp_char[0] = d_char[0];
2717 tmp_char[1] = d_char[1];
2718 tmp_char[2] = d_char[2];
2719 d_word3 = point;
2720 d_word2 = d_word;
2721 tposit = position;
2722 while ((tposit < curr_line->line_length) &&
2723 ((*d_word3 != ' ') && (*d_word3 != '\t')))
2724 {
2725 tposit++;
2726 *d_word2 = *d_word3;
2727 d_word2++;
2728 d_word3++;
2729 }
2730 while ((tposit < curr_line->line_length) &&
2731 ((*d_word3 == ' ') || (*d_word3 == '\t')))
2732 {
2733 tposit++;
2734 *d_word2 = *d_word3;
2735 d_word2++;
2736 d_word3++;
2737 }
2738 *d_word2 = (char) NULL;
2739 d_wrd_len = difference = d_word2 - d_word;
2740 d_word2 = point;
2741 while (tposit < curr_line->line_length)
2742 {
2743 tposit++;
2744 *d_word2 = *d_word3;
2745 d_word2++;
2746 d_word3++;
2747 }
2748 curr_line->line_length -= difference;
2749 *d_word2 = (char) NULL;
2750 draw_line(scr_vert, scr_horz,point,position,curr_line->line_length);
2751 d_char[0] = tmp_char[0];
2752 d_char[1] = tmp_char[1];
2753 d_char[2] = tmp_char[2];
2754 text_changes = TRUE;
2755 formatted = FALSE;
2756 }
2757
2758 void
2759 undel_word(void) /* undelete last deleted word */
2760 {
2761 int temp;
2762 int tposit;
2763 unsigned char *tmp_old_ptr;
2764 unsigned char *tmp_space;
2765 unsigned char *tmp_ptr;
2766 unsigned char *d_word_ptr;
2767
2768 /*
2769 | resize line to handle undeleted word
2770 */
2771 if ((curr_line->max_length - (curr_line->line_length + d_wrd_len)) < 5)
2772 point = resiz_line(d_wrd_len, curr_line, position);
2773 tmp_ptr = tmp_space = malloc(curr_line->line_length + d_wrd_len);
2774 d_word_ptr = d_word;
2775 temp = 1;
2776 /*
2777 | copy d_word contents into temp space
2778 */
2779 while (temp <= d_wrd_len)
2780 {
2781 temp++;
2782 *tmp_ptr = *d_word_ptr;
2783 tmp_ptr++;
2784 d_word_ptr++;
2785 }
2786 tmp_old_ptr = point;
2787 tposit = position;
2788 /*
2789 | copy contents of line from curent position to eol into
2790 | temp space
2791 */
2792 while (tposit < curr_line->line_length)
2793 {
2794 temp++;
2795 tposit++;
2796 *tmp_ptr = *tmp_old_ptr;
2797 tmp_ptr++;
2798 tmp_old_ptr++;
2799 }
2800 curr_line->line_length += d_wrd_len;
2801 tmp_old_ptr = point;
2802 *tmp_ptr = (char) NULL;
2803 tmp_ptr = tmp_space;
2804 tposit = 1;
2805 /*
2806 | now copy contents from temp space back to original line
2807 */
2808 while (tposit < temp)
2809 {
2810 tposit++;
2811 *tmp_old_ptr = *tmp_ptr;
2812 tmp_ptr++;
2813 tmp_old_ptr++;
2814 }
2815 *tmp_old_ptr = (char) NULL;
2816 free(tmp_space);
2817 draw_line(scr_vert, scr_horz, point, position, curr_line->line_length);
2818 }
2819
2820 void
2821 del_line(void) /* delete from cursor to end of line */
2822 {
2823 unsigned char *dl1;
2824 unsigned char *dl2;
2825 int tposit;
2826
2827 if (d_line != NULL)
2828 free(d_line);
2829 d_line = malloc(curr_line->line_length);
2830 dl1 = d_line;
2831 dl2 = point;
2832 tposit = position;
2833 while (tposit < curr_line->line_length)
2834 {
2835 *dl1 = *dl2;
2836 dl1++;
2837 dl2++;
2838 tposit++;
2839 }
2840 dlt_line->line_length = 1 + tposit - position;
2841 *dl1 = (char) NULL;
2842 *point = (char) NULL;
2843 curr_line->line_length = position;
2844 wclrtoeol(text_win);
2845 if (curr_line->next_line != NULL)
2846 {
2847 right(FALSE);
2848 delete(FALSE);
2849 }
2850 text_changes = TRUE;
2851 }
2852
2853 void
2854 undel_line(void) /* undelete last deleted line */
2855 {
2856 unsigned char *ud1;
2857 unsigned char *ud2;
2858 int tposit;
2859
2860 if (dlt_line->line_length == 0)
2861 return;
2862
2863 insert_line(TRUE);
2864 left(TRUE);
2865 point = resiz_line(dlt_line->line_length, curr_line, position);
2866 curr_line->line_length += dlt_line->line_length - 1;
2867 ud1 = point;
2868 ud2 = d_line;
2869 tposit = 1;
2870 while (tposit < dlt_line->line_length)
2871 {
2872 tposit++;
2873 *ud1 = *ud2;
2874 ud1++;
2875 ud2++;
2876 }
2877 *ud1 = (char) NULL;
2878 draw_line(scr_vert, scr_horz,point,position,curr_line->line_length);
2879 }
2880
2881 void
2882 adv_word(void) /* advance to next word */
2883 {
2884 while ((position < curr_line->line_length) && ((*point != 32) && (*point != 9)))
2885 right(TRUE);
2886 while ((position < curr_line->line_length) && ((*point == 32) || (*point == 9)))
2887 right(TRUE);
2888 }
2889
2890 void
2891 move_rel(char *direction, int lines) /* move relative to current line */
2892 {
2893 int i;
2894 char *tmp;
2895
2896 if (*direction == 'u')
2897 {
2898 scr_pos = 0;
2899 while (position > 1)
2900 left(TRUE);
2901 for (i = 0; i < lines; i++)
2902 {
2903 up();
2904 }
2905 if ((last_line > 5) && ( scr_vert < 4))
2906 {
2907 tmp = point;
2908 tmp_line = curr_line;
2909 for (i= 0;(i<5)&&(curr_line->prev_line != NULL); i++)
2910 {
2911 up();
2912 }
2913 scr_vert = scr_vert + i;
2914 curr_line = tmp_line;
2915 point = tmp;
2916 scanline(point);
2917 }
2918 }
2919 else
2920 {
2921 if ((position != 1) && (curr_line->next_line != NULL))
2922 {
2923 nextline();
2924 scr_pos = scr_horz = 0;
2925 if (horiz_offset)
2926 {
2927 horiz_offset = 0;
2928 midscreen(scr_vert, point);
2929 }
2930 }
2931 else
2932 adv_line();
2933 for (i = 1; i < lines; i++)
2934 {
2935 down();
2936 }
2937 if ((last_line > 10) && (scr_vert > (last_line - 5)))
2938 {
2939 tmp = point;
2940 tmp_line = curr_line;
2941 for (i=0; (i<5) && (curr_line->next_line != NULL); i++)
2942 {
2943 down();
2944 }
2945 scr_vert = scr_vert - i;
2946 curr_line = tmp_line;
2947 point = tmp;
2948 scanline(point);
2949 }
2950 }
2951 wmove(text_win, scr_vert, (scr_horz - horiz_offset));
2952 }
2953
2954 void
2955 eol(void) /* go to end of line */
2956 {
2957 if (position < curr_line->line_length)
2958 {
2959 while (position < curr_line->line_length)
2960 right(TRUE);
2961 }
2962 else if (curr_line->next_line != NULL)
2963 {
2964 right(TRUE);
2965 while (position < curr_line->line_length)
2966 right(TRUE);
2967 }
2968 }
2969
2970 void
2971 bol(void) /* move to beginning of line */
2972 {
2973 if (point != curr_line->line)
2974 {
2975 while (point != curr_line->line)
2976 left(TRUE);
2977 }
2978 else if (curr_line->prev_line != NULL)
2979 {
2980 scr_pos = 0;
2981 up();
2982 }
2983 }
2984
2985 void
2986 adv_line(void) /* advance to beginning of next line */
2987 {
2988 if ((point != curr_line->line) || (scr_pos > 0))
2989 {
2990 while (position < curr_line->line_length)
2991 right(TRUE);
2992 right(TRUE);
2993 }
2994 else if (curr_line->next_line != NULL)
2995 {
2996 scr_pos = 0;
2997 down();
2998 }
2999 }
3000
3001 /* string: string containing user command */
3002 void
3003 sh_command(char *string) /* execute shell command */
3004 {
3005 char *temp_point;
3006 char *last_slash;
3007 char *path; /* directory path to executable */
3008 int parent; /* zero if child, child's pid if parent */
3009 int value;
3010 int return_val;
3011 struct text *line_holder;
3012
3013 if (restrict_mode())
3014 {
3015 return;
3016 }
3017
3018 if (!(path = getenv("SHELL")))
3019 path = "/bin/sh";
3020 last_slash = temp_point = path;
3021 while (*temp_point != (char) NULL)
3022 {
3023 if (*temp_point == '/')
3024 last_slash = ++temp_point;
3025 else
3026 temp_point++;
3027 }
3028
3029 /*
3030 | if in_pipe is true, then output of the shell operation will be
3031 | read by the editor, and curses doesn't need to be turned off
3032 */
3033
3034 if (!in_pipe)
3035 {
3036 keypad(com_win, FALSE);
3037 keypad(text_win, FALSE);
3038 echo();
3039 nl();
3040 noraw();
3041 resetty();
3042
3043 #ifndef NCURSE
3044 endwin();
3045 #endif
3046 }
3047
3048 if (in_pipe)
3049 {
3050 pipe(pipe_in); /* create a pipe */
3051 parent = fork();
3052 if (!parent) /* if the child */
3053 {
3054 /*
3055 | child process which will fork and exec shell command (if shell output is
3056 | to be read by editor)
3057 */
3058 in_pipe = FALSE;
3059 /*
3060 | redirect stdout to pipe
3061 */
3062 temp_stdout = dup(1);
3063 close(1);
3064 dup(pipe_in[1]);
3065 /*
3066 | redirect stderr to pipe
3067 */
3068 temp_stderr = dup(2);
3069 close(2);
3070 dup(pipe_in[1]);
3071 close(pipe_in[1]);
3072 /*
3073 | child will now continue down 'if (!in_pipe)'
3074 | path below
3075 */
3076 }
3077 else /* if the parent */
3078 {
3079 /*
3080 | prepare editor to read from the pipe
3081 */
3082 signal(SIGCHLD, SIG_IGN);
3083 line_holder = curr_line;
3084 tmp_vert = scr_vert;
3085 close(pipe_in[1]);
3086 get_fd = pipe_in[0];
3087 get_file("");
3088 close(pipe_in[0]);
3089 scr_vert = tmp_vert;
3090 scr_horz = scr_pos = 0;
3091 position = 1;
3092 curr_line = line_holder;
3093 point = curr_line->line;
3094 out_pipe = FALSE;
3095 signal(SIGCHLD, SIG_DFL);
3096 /*
3097 | since flag "in_pipe" is still TRUE, the path which waits for the child
3098 | process to die will be avoided.
3099 | (the pipe is closed, no more output can be expected)
3100 */
3101 }
3102 }
3103 if (!in_pipe)
3104 {
3105 signal(SIGINT, SIG_IGN);
3106 if (out_pipe)
3107 {
3108 pipe(pipe_out);
3109 }
3110 /*
3111 | fork process which will exec command
3112 */
3113 parent = fork();
3114 if (!parent) /* if the child */
3115 {
3116 if (shell_fork)
3117 putchar('\n');
3118 if (out_pipe)
3119 {
3120 /*
3121 | prepare the child process (soon to exec a shell command) to read from the
3122 | pipe (which will be output from the editor's buffer)
3123 */
3124 close(0);
3125 dup(pipe_out[0]);
3126 close(pipe_out[0]);
3127 close(pipe_out[1]);
3128 }
3129 for (value = 1; value < 24; value++)
3130 signal(value, SIG_DFL);
3131 execl(path, last_slash, "-c", string, NULL);
3132 errx(1, exec_err_msg, path);
3133 }
3134 else /* if the parent */
3135 {
3136 if (out_pipe)
3137 {
3138 /*
3139 | output the contents of the buffer to the pipe (to be read by the
3140 | process forked and exec'd above as stdin)
3141 */
3142 close(pipe_out[0]);
3143 line_holder = first_line;
3144 while (line_holder != NULL)
3145 {
3146 write(pipe_out[1], line_holder->line, (line_holder->line_length-1));
3147 write(pipe_out[1], "\n", 1);
3148 line_holder = line_holder->next_line;
3149 }
3150 close(pipe_out[1]);
3151 out_pipe = FALSE;
3152 }
3153 do
3154 {
3155 return_val = wait((int *) 0);
3156 }
3157 while ((return_val != parent) && (return_val != -1));
3158 /*
3159 | if this process is actually the child of the editor, exit. Here's how it
3160 | works:
3161 | The editor forks a process. If output must be sent to the command to be
3162 | exec'd another process is forked, and that process (the child's child)
3163 | will exec the command. In this case, "shell_fork" will be FALSE. If no
3164 | output is to be performed to the shell command, "shell_fork" will be TRUE.
3165 | If this is the editor process, shell_fork will be true, otherwise this is
3166 | the child of the edit process.
3167 */
3168 if (!shell_fork)
3169 exit(0);
3170 }
3171 signal(SIGINT, edit_abort);
3172 }
3173 if (shell_fork)
3174 {
3175 printf("%s", continue_msg);
3176 fflush(stdout);
3177 while ((in = getchar()) != '\n')
3178 ;
3179 }
3180
3181 if (!in_pipe)
3182 {
3183 fixterm();
3184 noecho();
3185 nonl();
3186 raw();
3187 keypad(text_win, TRUE);
3188 keypad(com_win, TRUE);
3189 if (info_window)
3190 clearok(info_win, TRUE);
3191 }
3192
3193 redraw();
3194 }
3195
3196 void
3197 set_up_term(void) /* set up the terminal for operating with ae */
3198 {
3199 if (!curses_initialized)
3200 {
3201 initscr();
3202 savetty();
3203 noecho();
3204 raw();
3205 nonl();
3206 curses_initialized = TRUE;
3207 }
3208
3209 if (((LINES > 15) && (COLS >= 80)) && info_window)
3210 last_line = LINES - 8;
3211 else
3212 {
3213 info_window = FALSE;
3214 last_line = LINES - 2;
3215 }
3216
3217 idlok(stdscr, TRUE);
3218 com_win = newwin(1, COLS, (LINES - 1), 0);
3219 keypad(com_win, TRUE);
3220 idlok(com_win, TRUE);
3221 wrefresh(com_win);
3222 if (!info_window)
3223 text_win = newwin((LINES - 1), COLS, 0, 0);
3224 else
3225 text_win = newwin((LINES - 7), COLS, 6, 0);
3226 keypad(text_win, TRUE);
3227 idlok(text_win, TRUE);
3228 wrefresh(text_win);
3229 help_win = newwin((LINES - 1), COLS, 0, 0);
3230 keypad(help_win, TRUE);
3231 idlok(help_win, TRUE);
3232 if (info_window)
3233 {
3234 info_type = CONTROL_KEYS;
3235 info_win = newwin(5, COLS, 0, 0);
3236 werase(info_win);
3237 paint_info_win();
3238 count_win = newwin(1, COLS, 5, 0);
3239 leaveok(count_win, TRUE);
3240 wrefresh(count_win);
3241 }
3242
3243 last_col = COLS - 1;
3244 local_LINES = LINES;
3245 local_COLS = COLS;
3246
3247 #ifdef NCURSE
3248 if (ee_chinese)
3249 nc_setattrib(A_NC_BIG5);
3250 #endif /* NCURSE */
3251
3252 }
3253
3254 void
3255 resize_check(void)
3256 {
3257 if ((LINES == local_LINES) && (COLS == local_COLS))
3258 return;
3259
3260 if (info_window)
3261 delwin(info_win);
3262 delwin(text_win);
3263 delwin(com_win);
3264 delwin(help_win);
3265 delwin(count_win);
3266 set_up_term();
3267 redraw();
3268 wrefresh(text_win);
3269 }
3270
3271 static char item_alpha[] = "abcdefghijklmnopqrstuvwxyz0123456789 ";
3272
3273 int
3274 menu_op(struct menu_entries *menu_list)
3275 {
3276 WINDOW *temp_win;
3277 int max_width, max_height;
3278 int x_off, y_off;
3279 int counter;
3280 int length;
3281 int input;
3282 int temp = 0;
3283 int list_size;
3284 int top_offset; /* offset from top where menu items start */
3285 int vert_pos; /* vertical position */
3286 int vert_size; /* vertical size for menu list item display */
3287 int off_start = 1; /* offset from start of menu items to start display */
3288
3289
3290 /*
3291 | determine number and width of menu items
3292 */
3293
3294 list_size = 1;
3295 while (menu_list[list_size + 1].item_string != NULL)
3296 list_size++;
3297 max_width = 0;
3298 for (counter = 0; counter <= list_size; counter++)
3299 {
3300 if ((length = strlen(menu_list[counter].item_string)) > max_width)
3301 max_width = length;
3302 }
3303 max_width += 3;
3304 max_width = max(max_width, strlen(menu_cancel_msg));
3305 max_width = max(max_width, max(strlen(more_above_str), strlen(more_below_str)));
3306 max_width += 6;
3307
3308 /*
3309 | make sure that window is large enough to handle menu
3310 | if not, print error message and return to calling function
3311 */
3312
3313 if (max_width > COLS)
3314 {
3315 wmove(com_win, 0, 0);
3316 werase(com_win);
3317 wprintw(com_win, menu_too_lrg_msg);
3318 wrefresh(com_win);
3319 clear_com_win = TRUE;
3320 return(0);
3321 }
3322
3323 top_offset = 0;
3324
3325 if (list_size > LINES)
3326 {
3327 max_height = LINES;
3328 if (max_height > 11)
3329 vert_size = max_height - 8;
3330 else
3331 vert_size = max_height;
3332 }
3333 else
3334 {
3335 vert_size = list_size;
3336 max_height = list_size;
3337 }
3338
3339 if (LINES >= (vert_size + 8))
3340 {
3341 if (menu_list[0].argument != MENU_WARN)
3342 max_height = vert_size + 8;
3343 else
3344 max_height = vert_size + 7;
3345 top_offset = 4;
3346 }
3347 x_off = (COLS - max_width) / 2;
3348 y_off = (LINES - max_height - 1) / 2;
3349 temp_win = newwin(max_height, max_width, y_off, x_off);
3350 keypad(temp_win, TRUE);
3351
3352 paint_menu(menu_list, max_width, max_height, list_size, top_offset, temp_win, off_start, vert_size);
3353
3354 counter = 1;
3355 vert_pos = 0;
3356 do
3357 {
3358 if (off_start > 2)
3359 wmove(temp_win, (1 + counter + top_offset - off_start), 3);
3360 else
3361 wmove(temp_win, (counter + top_offset - off_start), 3);
3362
3363 wrefresh(temp_win);
3364 input = wgetch(temp_win);
3365
3366 if (((tolower(input) >= 'a') && (tolower(input) <= 'z')) ||
3367 ((input >= '0') && (input <= '9')))
3368 {
3369 if ((tolower(input) >= 'a') && (tolower(input) <= 'z'))
3370 {
3371 temp = 1 + tolower(input) - 'a';
3372 }
3373 else if ((input >= '0') && (input <= '9'))
3374 {
3375 temp = (2 + 'z' - 'a') + (input - '0');
3376 }
3377
3378 if (temp <= list_size)
3379 {
3380 input = '\n';
3381 counter = temp;
3382 }
3383 }
3384 else
3385 {
3386 switch (input)
3387 {
3388 case ' ': /* space */
3389 case '\004': /* ^d, down */
3390 case KEY_RIGHT:
3391 case KEY_DOWN:
3392 counter++;
3393 if (counter > list_size)
3394 counter = 1;
3395 break;
3396 case '\010': /* ^h, backspace*/
3397 case '\025': /* ^u, up */
3398 case 127: /* ^?, delete */
3399 case KEY_BACKSPACE:
3400 case KEY_LEFT:
3401 case KEY_UP:
3402 counter--;
3403 if (counter == 0)
3404 counter = list_size;
3405 break;
3406 case '\033': /* escape key */
3407 if (menu_list[0].argument != MENU_WARN)
3408 counter = 0;
3409 break;
3410 case '\014': /* ^l */
3411 case '\022': /* ^r, redraw */
3412 paint_menu(menu_list, max_width, max_height,
3413 list_size, top_offset, temp_win,
3414 off_start, vert_size);
3415 break;
3416 default:
3417 break;
3418 }
3419 }
3420
3421 if (((list_size - off_start) >= (vert_size - 1)) &&
3422 (counter > (off_start + vert_size - 3)) &&
3423 (off_start > 1))
3424 {
3425 if (counter == list_size)
3426 off_start = (list_size - vert_size) + 2;
3427 else
3428 off_start++;
3429
3430 paint_menu(menu_list, max_width, max_height,
3431 list_size, top_offset, temp_win, off_start,
3432 vert_size);
3433 }
3434 else if ((list_size != vert_size) &&
3435 (counter > (off_start + vert_size - 2)))
3436 {
3437 if (counter == list_size)
3438 off_start = 2 + (list_size - vert_size);
3439 else if (off_start == 1)
3440 off_start = 3;
3441 else
3442 off_start++;
3443
3444 paint_menu(menu_list, max_width, max_height,
3445 list_size, top_offset, temp_win, off_start,
3446 vert_size);
3447 }
3448 else if (counter < off_start)
3449 {
3450 if (counter <= 2)
3451 off_start = 1;
3452 else
3453 off_start = counter;
3454
3455 paint_menu(menu_list, max_width, max_height,
3456 list_size, top_offset, temp_win, off_start,
3457 vert_size);
3458 }
3459 }
3460 while ((input != '\r') && (input != '\n') && (counter != 0));
3461
3462 werase(temp_win);
3463 wrefresh(temp_win);
3464 delwin(temp_win);
3465
3466 if ((menu_list[counter].procedure != NULL) ||
3467 (menu_list[counter].iprocedure != NULL) ||
3468 (menu_list[counter].nprocedure != NULL))
3469 {
3470 if (menu_list[counter].argument != -1)
3471 (*menu_list[counter].iprocedure)(menu_list[counter].argument);
3472 else if (menu_list[counter].ptr_argument != NULL)
3473 (*menu_list[counter].procedure)(menu_list[counter].ptr_argument);
3474 else
3475 (*menu_list[counter].nprocedure)();
3476 }
3477
3478 if (info_window)
3479 paint_info_win();
3480 redraw();
3481
3482 return(counter);
3483 }
3484
3485 void
3486 paint_menu(struct menu_entries *menu_list, int max_width, int max_height,
3487 int list_size, int top_offset, WINDOW *menu_win, int off_start,
3488 int vert_size)
3489 {
3490 int counter, temp_int;
3491
3492 werase(menu_win);
3493
3494 /*
3495 | output top and bottom portions of menu box only if window
3496 | large enough
3497 */
3498
3499 if (max_height > vert_size)
3500 {
3501 wmove(menu_win, 1, 1);
3502 if (!nohighlight)
3503 wstandout(menu_win);
3504 waddch(menu_win, '+');
3505 for (counter = 0; counter < (max_width - 4); counter++)
3506 waddch(menu_win, '-');
3507 waddch(menu_win, '+');
3508
3509 wmove(menu_win, (max_height - 2), 1);
3510 waddch(menu_win, '+');
3511 for (counter = 0; counter < (max_width - 4); counter++)
3512 waddch(menu_win, '-');
3513 waddch(menu_win, '+');
3514 wstandend(menu_win);
3515 wmove(menu_win, 2, 3);
3516 waddstr(menu_win, menu_list[0].item_string);
3517 wmove(menu_win, (max_height - 3), 3);
3518 if (menu_list[0].argument != MENU_WARN)
3519 waddstr(menu_win, menu_cancel_msg);
3520 }
3521 if (!nohighlight)
3522 wstandout(menu_win);
3523
3524 for (counter = 0; counter < (vert_size + top_offset); counter++)
3525 {
3526 if (top_offset == 4)
3527 {
3528 temp_int = counter + 2;
3529 }
3530 else
3531 temp_int = counter;
3532
3533 wmove(menu_win, temp_int, 1);
3534 waddch(menu_win, '|');
3535 wmove(menu_win, temp_int, (max_width - 2));
3536 waddch(menu_win, '|');
3537 }
3538 wstandend(menu_win);
3539
3540 if (list_size > vert_size)
3541 {
3542 if (off_start >= 3)
3543 {
3544 temp_int = 1;
3545 wmove(menu_win, top_offset, 3);
3546 waddstr(menu_win, more_above_str);
3547 }
3548 else
3549 temp_int = 0;
3550
3551 for (counter = off_start;
3552 ((temp_int + counter - off_start) < (vert_size - 1));
3553 counter++)
3554 {
3555 wmove(menu_win, (top_offset + temp_int +
3556 (counter - off_start)), 3);
3557 if (list_size > 1)
3558 wprintw(menu_win, "%c) ", item_alpha[min((counter - 1), max_alpha_char)]);
3559 waddstr(menu_win, menu_list[counter].item_string);
3560 }
3561
3562 wmove(menu_win, (top_offset + (vert_size - 1)), 3);
3563
3564 if (counter == list_size)
3565 {
3566 if (list_size > 1)
3567 wprintw(menu_win, "%c) ", item_alpha[min((counter - 1), max_alpha_char)]);
3568 wprintw(menu_win, menu_list[counter].item_string);
3569 }
3570 else
3571 wprintw(menu_win, more_below_str);
3572 }
3573 else
3574 {
3575 for (counter = 1; counter <= list_size; counter++)
3576 {
3577 wmove(menu_win, (top_offset + counter - 1), 3);
3578 if (list_size > 1)
3579 wprintw(menu_win, "%c) ", item_alpha[min((counter - 1), max_alpha_char)]);
3580 waddstr(menu_win, menu_list[counter].item_string);
3581 }
3582 }
3583 }
3584
3585 void
3586 help(void)
3587 {
3588 int counter;
3589
3590 werase(help_win);
3591 clearok(help_win, TRUE);
3592 for (counter = 0; counter < 22; counter++)
3593 {
3594 wmove(help_win, counter, 0);
3595 waddstr(help_win, (emacs_keys_mode) ?
3596 emacs_help_text[counter] : help_text[counter]);
3597 }
3598 wrefresh(help_win);
3599 werase(com_win);
3600 wmove(com_win, 0, 0);
3601 wprintw(com_win, press_any_key_msg);
3602 wrefresh(com_win);
3603 counter = wgetch(com_win);
3604 werase(com_win);
3605 wmove(com_win, 0, 0);
3606 werase(help_win);
3607 wrefresh(help_win);
3608 wrefresh(com_win);
3609 redraw();
3610 }
3611
3612 void
3613 paint_info_win(void)
3614 {
3615 int counter;
3616
3617 if (!info_window)
3618 return;
3619
3620 werase(info_win);
3621 for (counter = 0; counter < 5; counter++)
3622 {
3623 wmove(info_win, counter, 0);
3624 wclrtoeol(info_win);
3625 if (info_type == CONTROL_KEYS)
3626 waddstr(info_win, (emacs_keys_mode) ?
3627 emacs_control_keys[counter] : control_keys[counter]);
3628 else if (info_type == COMMANDS)
3629 waddstr(info_win, command_strings[counter]);
3630 }
3631 wrefresh(info_win);
3632 }
3633
3634 void
3635 no_info_window(void)
3636 {
3637 if (!info_window)
3638 return;
3639 delwin(info_win);
3640 delwin(text_win);
3641 info_window = FALSE;
3642 last_line = LINES - 2;
3643 text_win = newwin((LINES - 1), COLS, 0, 0);
3644 keypad(text_win, TRUE);
3645 idlok(text_win, TRUE);
3646 clearok(text_win, TRUE);
3647 midscreen(scr_vert, point);
3648 wrefresh(text_win);
3649 clear_com_win = TRUE;
3650 }
3651
3652 void
3653 create_info_window(void)
3654 {
3655 if (info_window)
3656 return;
3657 last_line = LINES - 8;
3658 delwin(text_win);
3659 text_win = newwin((LINES - 7), COLS, 6, 0);
3660 keypad(text_win, TRUE);
3661 idlok(text_win, TRUE);
3662 werase(text_win);
3663 info_window = TRUE;
3664 info_win = newwin(5, COLS, 0, 0);
3665 werase(info_win);
3666 info_type = CONTROL_KEYS;
3667 midscreen(min(scr_vert, last_line), point);
3668 clearok(info_win, TRUE);
3669 paint_info_win();
3670 count_win = newwin(1, COLS, 5, 0);
3671 leaveok(count_win, TRUE);
3672 wrefresh(count_win);
3673 wrefresh(text_win);
3674 clear_com_win = TRUE;
3675 }
3676
3677 int
3678 file_op(int arg)
3679 {
3680 char *string;
3681 int flag;
3682
3683 if (restrict_mode())
3684 {
3685 return(0);
3686 }
3687
3688 if (arg == READ_FILE)
3689 {
3690 string = get_string(file_read_prompt_str, TRUE);
3691 recv_file = TRUE;
3692 tmp_file = resolve_name(string);
3693 check_fp();
3694 if (tmp_file != string)
3695 free(tmp_file);
3696 free(string);
3697 }
3698 else if (arg == WRITE_FILE)
3699 {
3700 string = get_string(file_write_prompt_str, TRUE);
3701 tmp_file = resolve_name(string);
3702 write_file(tmp_file);
3703 if (tmp_file != string)
3704 free(tmp_file);
3705 free(string);
3706 }
3707 else if (arg == SAVE_FILE)
3708 {
3709 /*
3710 | changes made here should be reflected in finish()
3711 */
3712
3713 if (in_file_name)
3714 flag = TRUE;
3715 else
3716 flag = FALSE;
3717
3718 string = in_file_name;
3719 if ((string == NULL) || (*string == (char) NULL))
3720 string = get_string(save_file_name_prompt, TRUE);
3721 if ((string == NULL) || (*string == (char) NULL))
3722 {
3723 wmove(com_win, 0, 0);
3724 wprintw(com_win, file_not_saved_msg);
3725 wclrtoeol(com_win);
3726 wrefresh(com_win);
3727 clear_com_win = TRUE;
3728 return(0);
3729 }
3730 if (!flag)
3731 {
3732 tmp_file = resolve_name(string);
3733 if (tmp_file != string)
3734 {
3735 free(string);
3736 string = tmp_file;
3737 }
3738 }
3739 if (write_file(string))
3740 {
3741 in_file_name = string;
3742 text_changes = FALSE;
3743 }
3744 else if (!flag)
3745 free(string);
3746 }
3747 return(0);
3748 }
3749
3750 void
3751 shell_op(void)
3752 {
3753 char *string;
3754
3755 if (((string = get_string(shell_prompt, TRUE)) != NULL) &&
3756 (*string != (char) NULL))
3757 {
3758 sh_command(string);
3759 free(string);
3760 }
3761 }
3762
3763 void
3764 leave_op(void)
3765 {
3766 if (text_changes)
3767 {
3768 menu_op(leave_menu);
3769 }
3770 else
3771 quit(TRUE);
3772 }
3773
3774 void
3775 redraw(void)
3776 {
3777 if (info_window)
3778 {
3779 clearok(info_win, TRUE);
3780 paint_info_win();
3781 }
3782 else
3783 clearok(text_win, TRUE);
3784 midscreen(scr_vert, point);
3785 }
3786
3787 /*
3788 | The following routines will "format" a paragraph (as defined by a
3789 | block of text with blank lines before and after the block).
3790 */
3791
3792 int
3793 Blank_Line(struct text *test_line)
3794 /* test if line has any non-space characters */
3795 {
3796 unsigned char *line;
3797 int length;
3798
3799 if (test_line == NULL)
3800 return(TRUE);
3801
3802 length = 1;
3803 line = test_line->line;
3804
3805 /*
3806 | To handle troff/nroff documents, consider a line with a
3807 | period ('.') in the first column to be blank. To handle mail
3808 | messages with included text, consider a line with a '>' blank.
3809 */
3810
3811 if ((*line == '.') || (*line == '>'))
3812 return(TRUE);
3813
3814 while (((*line == ' ') || (*line == '\t')) && (length < test_line->line_length))
3815 {
3816 length++;
3817 line++;
3818 }
3819 if (length != test_line->line_length)
3820 return(FALSE);
3821 else
3822 return(TRUE);
3823 }
3824
3825 void
3826 Format(void) /* format the paragraph according to set margins */
3827 {
3828 int string_count;
3829 int offset;
3830 int temp_case;
3831 int status;
3832 int tmp_af;
3833 int counter;
3834 unsigned char *line;
3835 unsigned char *tmp_srchstr;
3836 unsigned char *temp1, *temp2;
3837 unsigned char *temp_dword;
3838 unsigned char temp_d_char[3];
3839
3840 temp_d_char[0] = d_char[0];
3841 temp_d_char[1] = d_char[1];
3842 temp_d_char[2] = d_char[2];
3843
3844 /*
3845 | if observ_margins is not set, or the current line is blank,
3846 | do not format the current paragraph
3847 */
3848
3849 if ((!observ_margins) || (Blank_Line(curr_line)))
3850 return;
3851
3852 /*
3853 | save the currently set flags, and clear them
3854 */
3855
3856 wmove(com_win, 0, 0);
3857 wclrtoeol(com_win);
3858 wprintw(com_win, formatting_msg);
3859 wrefresh(com_win);
3860
3861 /*
3862 | get current position in paragraph, so after formatting, the cursor
3863 | will be in the same relative position
3864 */
3865
3866 tmp_af = auto_format;
3867 auto_format = FALSE;
3868 offset = position;
3869 if (position != 1)
3870 prev_word();
3871 temp_dword = d_word;
3872 d_word = NULL;
3873 temp_case = case_sen;
3874 case_sen = TRUE;
3875 tmp_srchstr = srch_str;
3876 temp2 = srch_str = (unsigned char *) malloc(1 + curr_line->line_length - position);
3877 if ((*point == ' ') || (*point == '\t'))
3878 adv_word();
3879 offset -= position;
3880 counter = position;
3881 line = temp1 = point;
3882 while ((*temp1 != (char) NULL) && (*temp1 != ' ') && (*temp1 != '\t') && (counter < curr_line->line_length))
3883 {
3884 *temp2 = *temp1;
3885 temp2++;
3886 temp1++;
3887 counter++;
3888 }
3889 *temp2 = (char) NULL;
3890 if (position != 1)
3891 bol();
3892 while (!Blank_Line(curr_line->prev_line))
3893 bol();
3894 string_count = 0;
3895 status = TRUE;
3896 while ((line != point) && (status))
3897 {
3898 status = search(FALSE);
3899 string_count++;
3900 }
3901
3902 wmove(com_win, 0, 0);
3903 wclrtoeol(com_win);
3904 wprintw(com_win, formatting_msg);
3905 wrefresh(com_win);
3906
3907 /*
3908 | now get back to the start of the paragraph to start formatting
3909 */
3910
3911 if (position != 1)
3912 bol();
3913 while (!Blank_Line(curr_line->prev_line))
3914 bol();
3915
3916 observ_margins = FALSE;
3917
3918 /*
3919 | Start going through lines, putting spaces at end of lines if they do
3920 | not already exist. Append lines together to get one long line, and
3921 | eliminate spacing at begin of lines.
3922 */
3923
3924 while (!Blank_Line(curr_line->next_line))
3925 {
3926 eol();
3927 left(TRUE);
3928 if (*point != ' ')
3929 {
3930 right(TRUE);
3931 insert(' ');
3932 }
3933 else
3934 right(TRUE);
3935 del_char();
3936 if ((*point == ' ') || (*point == '\t'))
3937 del_word();
3938 }
3939
3940 /*
3941 | Now there is one long line. Eliminate extra spaces within the line
3942 | after the first word (so as not to blow away any indenting the user
3943 | may have put in).
3944 */
3945
3946 bol();
3947 adv_word();
3948 while (position < curr_line->line_length)
3949 {
3950 if ((*point == ' ') && (*(point + 1) == ' '))
3951 del_char();
3952 else
3953 right(TRUE);
3954 }
3955
3956 /*
3957 | Now make sure there are two spaces after a '.'.
3958 */
3959
3960 bol();
3961 while (position < curr_line->line_length)
3962 {
3963 if ((*point == '.') && (*(point + 1) == ' '))
3964 {
3965 right(TRUE);
3966 insert(' ');
3967 insert(' ');
3968 while (*point == ' ')
3969 del_char();
3970 }
3971 right(TRUE);
3972 }
3973
3974 observ_margins = TRUE;
3975 bol();
3976
3977 wmove(com_win, 0, 0);
3978 wclrtoeol(com_win);
3979 wprintw(com_win, formatting_msg);
3980 wrefresh(com_win);
3981
3982 /*
3983 | create lines between margins
3984 */
3985
3986 while (position < curr_line->line_length)
3987 {
3988 while ((scr_pos < right_margin) && (position < curr_line->line_length))
3989 right(TRUE);
3990 if (position < curr_line->line_length)
3991 {
3992 prev_word();
3993 if (position == 1)
3994 adv_word();
3995 insert_line(TRUE);
3996 }
3997 }
3998
3999 /*
4000 | go back to begin of paragraph, put cursor back to original position
4001 */
4002
4003 bol();
4004 while (!Blank_Line(curr_line->prev_line))
4005 bol();
4006
4007 /*
4008 | find word cursor was in
4009 */
4010
4011 while ((status) && (string_count > 0))
4012 {
4013 search(FALSE);
4014 string_count--;
4015 }
4016
4017 /*
4018 | offset the cursor to where it was before from the start of the word
4019 */
4020
4021 while (offset > 0)
4022 {
4023 offset--;
4024 right(TRUE);
4025 }
4026
4027 /*
4028 | reset flags and strings to what they were before formatting
4029 */
4030
4031 if (d_word != NULL)
4032 free(d_word);
4033 d_word = temp_dword;
4034 case_sen = temp_case;
4035 free(srch_str);
4036 srch_str = tmp_srchstr;
4037 d_char[0] = temp_d_char[0];
4038 d_char[1] = temp_d_char[1];
4039 d_char[2] = temp_d_char[2];
4040 auto_format = tmp_af;
4041
4042 midscreen(scr_vert, point);
4043 werase(com_win);
4044 wrefresh(com_win);
4045 }
4046
4047 unsigned char *init_name[3] = {
4048 "/usr/share/misc/init.ee",
4049 NULL,
4050 ".init.ee"
4051 };
4052
4053 void
4054 ee_init(void) /* check for init file and read it if it exists */
4055 {
4056 FILE *init_file;
4057 unsigned char *string;
4058 unsigned char *str1;
4059 unsigned char *str2;
4060 char *home;
4061 int counter;
4062 int temp_int;
4063
4064 string = getenv("HOME");
4065 if (!string)
4066 string = "/root"; /* Set to reasonable default so we don't crash */
4067 str1 = home = malloc(strlen(string)+10);
4068 strcpy(home, string);
4069 strcat(home, "/.init.ee");
4070 init_name[1] = home;
4071 string = malloc(512);
4072
4073 for (counter = 0; counter < 3; counter++)
4074 {
4075 if (!(access(init_name[counter], 4)))
4076 {
4077 init_file = fopen(init_name[counter], "r");
4078 while ((str2 = fgets(string, 512, init_file)) != NULL)
4079 {
4080 str1 = str2 = string;
4081 while (*str2 != '\n')
4082 str2++;
4083 *str2 = (char) NULL;
4084
4085 if (unique_test(string, init_strings) != 1)
4086 continue;
4087
4088 if (compare(str1, CASE, FALSE))
4089 case_sen = TRUE;
4090 else if (compare(str1, NOCASE, FALSE))
4091 case_sen = FALSE;
4092 else if (compare(str1, EXPAND, FALSE))
4093 expand_tabs = TRUE;
4094 else if (compare(str1, NOEXPAND, FALSE))
4095 expand_tabs = FALSE;
4096 else if (compare(str1, INFO, FALSE))
4097 info_window = TRUE;
4098 else if (compare(str1, NOINFO, FALSE))
4099 info_window = FALSE;
4100 else if (compare(str1, MARGINS, FALSE))
4101 observ_margins = TRUE;
4102 else if (compare(str1, NOMARGINS, FALSE))
4103 observ_margins = FALSE;
4104 else if (compare(str1, AUTOFORMAT, FALSE))
4105 {
4106 auto_format = TRUE;
4107 observ_margins = TRUE;
4108 }
4109 else if (compare(str1, NOAUTOFORMAT, FALSE))
4110 auto_format = FALSE;
4111 else if (compare(str1, Echo, FALSE))
4112 {
4113 str1 = next_word(str1);
4114 if (*str1 != (char) NULL)
4115 echo_string(str1);
4116 }
4117 else if (compare(str1, PRINTCOMMAND, FALSE))
4118 {
4119 str1 = next_word(str1);
4120 print_command = malloc(strlen(str1)+1);
4121 strcpy(print_command, str1);
4122 }
4123 else if (compare(str1, RIGHTMARGIN, FALSE))
4124 {
4125 str1 = next_word(str1);
4126 if ((*str1 >= '0') && (*str1 <= '9'))
4127 {
4128 temp_int = atoi(str1);
4129 if (temp_int > 0)
4130 right_margin = temp_int;
4131 }
4132 }
4133 else if (compare(str1, HIGHLIGHT, FALSE))
4134 nohighlight = FALSE;
4135 else if (compare(str1, NOHIGHLIGHT, FALSE))
4136 nohighlight = TRUE;
4137 else if (compare(str1, EIGHTBIT, FALSE))
4138 eightbit = TRUE;
4139 else if (compare(str1, NOEIGHTBIT, FALSE))
4140 {
4141 eightbit = FALSE;
4142 ee_chinese = FALSE;
4143 }
4144 else if (compare(str1, EMACS_string, FALSE))
4145 emacs_keys_mode = TRUE;
4146 else if (compare(str1, NOEMACS_string, FALSE))
4147 emacs_keys_mode = FALSE;
4148 else if (compare(str1, chinese_cmd, FALSE))
4149 {
4150 ee_chinese = TRUE;
4151 eightbit = TRUE;
4152 }
4153 else if (compare(str1, nochinese_cmd, FALSE))
4154 ee_chinese = FALSE;
4155 }
4156 fclose(init_file);
4157 }
4158 }
4159 free(string);
4160 free(home);
4161
4162 string = getenv("LANG");
4163 if (string != NULL)
4164 {
4165 if (strcmp(string, "zh_TW.big5") == 0)
4166 {
4167 ee_chinese = TRUE;
4168 eightbit = TRUE;
4169 }
4170 }
4171 }
4172
4173 /*
4174 | Save current configuration to .init.ee file in the current directory.
4175 */
4176
4177 void
4178 dump_ee_conf(void)
4179 {
4180 FILE *init_file;
4181 FILE *old_init_file = NULL;
4182 char *file_name = ".init.ee";
4183 char *home_dir = "~/.init.ee";
4184 char buffer[512];
4185 struct stat buf;
4186 char *string;
4187 int length;
4188 int option = 0;
4189
4190 if (restrict_mode())
4191 {
4192 return;
4193 }
4194
4195 option = menu_op(config_dump_menu);
4196
4197 werase(com_win);
4198 wmove(com_win, 0, 0);
4199
4200 if (option == 0)
4201 {
4202 wprintw(com_win, conf_not_saved_msg);
4203 wrefresh(com_win);
4204 return;
4205 }
4206 else if (option == 2)
4207 file_name = resolve_name(home_dir);
4208
4209 /*
4210 | If a .init.ee file exists, move it to .init.ee.old.
4211 */
4212
4213 if (stat(file_name, &buf) != -1)
4214 {
4215 sprintf(buffer, "%s.old", file_name);
4216 unlink(buffer);
4217 link(file_name, buffer);
4218 unlink(file_name);
4219 old_init_file = fopen(buffer, "r");
4220 }
4221
4222 init_file = fopen(file_name, "w");
4223 if (init_file == NULL)
4224 {
4225 wprintw(com_win, conf_dump_err_msg);
4226 wrefresh(com_win);
4227 return;
4228 }
4229
4230 if (old_init_file != NULL)
4231 {
4232 /*
4233 | Copy non-configuration info into new .init.ee file.
4234 */
4235 while ((string = fgets(buffer, 512, old_init_file)) != NULL)
4236 {
4237 length = strlen(string);
4238 string[length - 1] = (char) NULL;
4239
4240 if (unique_test(string, init_strings) == 1)
4241 {
4242 if (compare(string, Echo, FALSE))
4243 {
4244 fprintf(init_file, "%s\n", string);
4245 }
4246 }
4247 else
4248 fprintf(init_file, "%s\n", string);
4249 }
4250
4251 fclose(old_init_file);
4252 }
4253
4254 fprintf(init_file, "%s\n", case_sen ? CASE : NOCASE);
4255 fprintf(init_file, "%s\n", expand_tabs ? EXPAND : NOEXPAND);
4256 fprintf(init_file, "%s\n", info_window ? INFO : NOINFO );
4257 fprintf(init_file, "%s\n", observ_margins ? MARGINS : NOMARGINS );
4258 fprintf(init_file, "%s\n", auto_format ? AUTOFORMAT : NOAUTOFORMAT );
4259 fprintf(init_file, "%s %s\n", PRINTCOMMAND, print_command);
4260 fprintf(init_file, "%s %d\n", RIGHTMARGIN, right_margin);
4261 fprintf(init_file, "%s\n", nohighlight ? NOHIGHLIGHT : HIGHLIGHT );
4262 fprintf(init_file, "%s\n", eightbit ? EIGHTBIT : NOEIGHTBIT );
4263 fprintf(init_file, "%s\n", emacs_keys_mode ? EMACS_string : NOEMACS_string );
4264 fprintf(init_file, "%s\n", ee_chinese ? chinese_cmd : nochinese_cmd );
4265
4266 fclose(init_file);
4267
4268 wprintw(com_win, conf_dump_success_msg, file_name);
4269 wrefresh(com_win);
4270
4271 if ((option == 2) && (file_name != home_dir))
4272 {
4273 free(file_name);
4274 }
4275 }
4276
4277 void
4278 echo_string(char *string) /* echo the given string */
4279 {
4280 char *temp;
4281 int Counter;
4282
4283 temp = string;
4284 while (*temp != (char) NULL)
4285 {
4286 if (*temp == '\\')
4287 {
4288 temp++;
4289 if (*temp == 'n')
4290 putchar('\n');
4291 else if (*temp == 't')
4292 putchar('\t');
4293 else if (*temp == 'b')
4294 putchar('\b');
4295 else if (*temp == 'r')
4296 putchar('\r');
4297 else if (*temp == 'f')
4298 putchar('\f');
4299 else if ((*temp == 'e') || (*temp == 'E'))
4300 putchar('\033'); /* escape */
4301 else if (*temp == '\\')
4302 putchar('\\');
4303 else if (*temp == '\'')
4304 putchar('\'');
4305 else if ((*temp >= '0') && (*temp <= '9'))
4306 {
4307 Counter = 0;
4308 while ((*temp >= '0') && (*temp <= '9'))
4309 {
4310 Counter = (8 * Counter) + (*temp - '0');
4311 temp++;
4312 }
4313 putchar(Counter);
4314 temp--;
4315 }
4316 temp++;
4317 }
4318 else
4319 {
4320 putchar(*temp);
4321 temp++;
4322 }
4323 }
4324
4325 fflush(stdout);
4326 }
4327
4328 void
4329 spell_op(void) /* check spelling of words in the editor */
4330 {
4331 if (restrict_mode())
4332 {
4333 return;
4334 }
4335 top(); /* go to top of file */
4336 insert_line(FALSE); /* create two blank lines */
4337 insert_line(FALSE);
4338 top();
4339 command(shell_echo_msg);
4340 adv_line();
4341 wmove(com_win, 0, 0);
4342 wprintw(com_win, spell_in_prog_msg);
4343 wrefresh(com_win);
4344 command("<>!spell"); /* send contents of buffer to command 'spell'
4345 and read the results back into the editor */
4346 }
4347
4348 void
4349 ispell_op(void)
4350 {
4351 char name[128];
4352 char string[256];
4353 int pid;
4354
4355 if (restrict_mode())
4356 {
4357 return;
4358 }
4359 pid = getpid();
4360 sprintf(name, "/tmp/ee.%d", pid);
4361 if (write_file(name))
4362 {
4363 sprintf(string, "ispell %s", name);
4364 sh_command(string);
4365 delete_text();
4366 tmp_file = name;
4367 recv_file = TRUE;
4368 check_fp();
4369 unlink(name);
4370 }
4371 }
4372
4373 int
4374 first_word_len(struct text *test_line)
4375 {
4376 int counter;
4377 unsigned char *pnt;
4378
4379 if (test_line == NULL)
4380 return(0);
4381
4382 pnt = test_line->line;
4383 if ((pnt == NULL) || (*pnt == (char) NULL) ||
4384 (*pnt == '.') || (*pnt == '>'))
4385 return(0);
4386
4387 if ((*pnt == ' ') || (*pnt == '\t'))
4388 {
4389 pnt = next_word(pnt);
4390 }
4391
4392 if (*pnt == (char) NULL)
4393 return(0);
4394
4395 counter = 0;
4396 while ((*pnt != (char) NULL) && ((*pnt != ' ') && (*pnt != '\t')))
4397 {
4398 pnt++;
4399 counter++;
4400 }
4401 while ((*pnt != (char) NULL) && ((*pnt == ' ') || (*pnt == '\t')))
4402 {
4403 pnt++;
4404 counter++;
4405 }
4406 return(counter);
4407 }
4408
4409 void
4410 Auto_Format(void) /* format the paragraph according to set margins */
4411 {
4412 int string_count;
4413 int offset;
4414 int temp_case;
4415 int word_len;
4416 int temp_dwl;
4417 int tmp_d_line_length;
4418 int leave_loop = FALSE;
4419 int status;
4420 int counter;
4421 char not_blank;
4422 unsigned char *line;
4423 unsigned char *tmp_srchstr;
4424 unsigned char *temp1, *temp2;
4425 unsigned char *temp_dword;
4426 unsigned char temp_d_char[3];
4427 unsigned char *tmp_d_line;
4428
4429
4430 temp_d_char[0] = d_char[0];
4431 temp_d_char[1] = d_char[1];
4432 temp_d_char[2] = d_char[2];
4433
4434 /*
4435 | if observ_margins is not set, or the current line is blank,
4436 | do not format the current paragraph
4437 */
4438
4439 if ((!observ_margins) || (Blank_Line(curr_line)))
4440 return;
4441
4442 /*
4443 | get current position in paragraph, so after formatting, the cursor
4444 | will be in the same relative position
4445 */
4446
4447 tmp_d_line = d_line;
4448 tmp_d_line_length = dlt_line->line_length;
4449 d_line = NULL;
4450 auto_format = FALSE;
4451 offset = position;
4452 if ((position != 1) && ((*point == ' ') || (*point == '\t') || (position == curr_line->line_length) || (*point == (char) NULL)))
4453 prev_word();
4454 temp_dword = d_word;
4455 temp_dwl = d_wrd_len;
4456 d_wrd_len = 0;
4457 d_word = NULL;
4458 temp_case = case_sen;
4459 case_sen = TRUE;
4460 tmp_srchstr = srch_str;
4461 temp2 = srch_str = (unsigned char *) malloc(1 + curr_line->line_length - position);
4462 if ((*point == ' ') || (*point == '\t'))
4463 adv_word();
4464 offset -= position;
4465 counter = position;
4466 line = temp1 = point;
4467 while ((*temp1 != (char) NULL) && (*temp1 != ' ') && (*temp1 != '\t') && (counter < curr_line->line_length))
4468 {
4469 *temp2 = *temp1;
4470 temp2++;
4471 temp1++;
4472 counter++;
4473 }
4474 *temp2 = (char) NULL;
4475 if (position != 1)
4476 bol();
4477 while (!Blank_Line(curr_line->prev_line))
4478 bol();
4479 string_count = 0;
4480 status = TRUE;
4481 while ((line != point) && (status))
4482 {
4483 status = search(FALSE);
4484 string_count++;
4485 }
4486
4487 /*
4488 | now get back to the start of the paragraph to start checking
4489 */
4490
4491 if (position != 1)
4492 bol();
4493 while (!Blank_Line(curr_line->prev_line))
4494 bol();
4495
4496 /*
4497 | Start going through lines, putting spaces at end of lines if they do
4498 | not already exist. Check line length, and move words to the next line
4499 | if they cross the margin. Then get words from the next line if they
4500 | will fit in before the margin.
4501 */
4502
4503 counter = 0;
4504
4505 while (!leave_loop)
4506 {
4507 if (position != curr_line->line_length)
4508 eol();
4509 left(TRUE);
4510 if (*point != ' ')
4511 {
4512 right(TRUE);
4513 insert(' ');
4514 }
4515 else
4516 right(TRUE);
4517
4518 not_blank = FALSE;
4519
4520 /*
4521 | fill line if first word on next line will fit
4522 | in the line without crossing the margin
4523 */
4524
4525 while ((curr_line->next_line != NULL) &&
4526 ((word_len = first_word_len(curr_line->next_line)) > 0)
4527 && ((scr_pos + word_len) < right_margin))
4528 {
4529 adv_line();
4530 if ((*point == ' ') || (*point == '\t'))
4531 adv_word();
4532 del_word();
4533 if (position != 1)
4534 bol();
4535
4536 /*
4537 | We know this line was not blank before, so
4538 | make sure that it doesn't have one of the
4539 | leading characters that indicate the line
4540 | should not be modified.
4541 |
4542 | We also know that this character should not
4543 | be left as the first character of this line.
4544 */
4545
4546 if ((Blank_Line(curr_line)) &&
4547 (curr_line->line[0] != '.') &&
4548 (curr_line->line[0] != '>'))
4549 {
4550 del_line();
4551 not_blank = FALSE;
4552 }
4553 else
4554 not_blank = TRUE;
4555
4556 /*
4557 | go to end of previous line
4558 */
4559 left(TRUE);
4560 undel_word();
4561 eol();
4562 /*
4563 | make sure there's a space at the end of the line
4564 */
4565 left(TRUE);
4566 if (*point != ' ')
4567 {
4568 right(TRUE);
4569 insert(' ');
4570 }
4571 else
4572 right(TRUE);
4573 }
4574
4575 /*
4576 | make sure line does not cross right margin
4577 */
4578
4579 while (right_margin <= scr_pos)
4580 {
4581 prev_word();
4582 if (position != 1)
4583 {
4584 del_word();
4585 if (Blank_Line(curr_line->next_line))
4586 insert_line(TRUE);
4587 else
4588 adv_line();
4589 if ((*point == ' ') || (*point == '\t'))
4590 adv_word();
4591 undel_word();
4592 not_blank = TRUE;
4593 if (position != 1)
4594 bol();
4595 left(TRUE);
4596 }
4597 }
4598
4599 if ((!Blank_Line(curr_line->next_line)) || (not_blank))
4600 {
4601 adv_line();
4602 counter++;
4603 }
4604 else
4605 leave_loop = TRUE;
4606 }
4607
4608 /*
4609 | go back to begin of paragraph, put cursor back to original position
4610 */
4611
4612 if (position != 1)
4613 bol();
4614 while ((counter-- > 0) || (!Blank_Line(curr_line->prev_line)))
4615 bol();
4616
4617 /*
4618 | find word cursor was in
4619 */
4620
4621 status = TRUE;
4622 while ((status) && (string_count > 0))
4623 {
4624 status = search(FALSE);
4625 string_count--;
4626 }
4627
4628 /*
4629 | offset the cursor to where it was before from the start of the word
4630 */
4631
4632 while (offset > 0)
4633 {
4634 offset--;
4635 right(TRUE);
4636 }
4637
4638 if ((string_count > 0) && (offset < 0))
4639 {
4640 while (offset < 0)
4641 {
4642 offset++;
4643 left(TRUE);
4644 }
4645 }
4646
4647 /*
4648 | reset flags and strings to what they were before formatting
4649 */
4650
4651 if (d_word != NULL)
4652 free(d_word);
4653 d_word = temp_dword;
4654 d_wrd_len = temp_dwl;
4655 case_sen = temp_case;
4656 free(srch_str);
4657 srch_str = tmp_srchstr;
4658 d_char[0] = temp_d_char[0];
4659 d_char[1] = temp_d_char[1];
4660 d_char[2] = temp_d_char[2];
4661 auto_format = TRUE;
4662 dlt_line->line_length = tmp_d_line_length;
4663 d_line = tmp_d_line;
4664
4665 formatted = TRUE;
4666 midscreen(scr_vert, point);
4667 }
4668
4669 void
4670 modes_op(void)
4671 {
4672 int ret_value;
4673 int counter;
4674 char *string;
4675
4676 do
4677 {
4678 sprintf(modes_menu[1].item_string, "%s %s", mode_strings[1],
4679 (expand_tabs ? ON : OFF));
4680 sprintf(modes_menu[2].item_string, "%s %s", mode_strings[2],
4681 (case_sen ? ON : OFF));
4682 sprintf(modes_menu[3].item_string, "%s %s", mode_strings[3],
4683 (observ_margins ? ON : OFF));
4684 sprintf(modes_menu[4].item_string, "%s %s", mode_strings[4],
4685 (auto_format ? ON : OFF));
4686 sprintf(modes_menu[5].item_string, "%s %s", mode_strings[5],
4687 (eightbit ? ON : OFF));
4688 sprintf(modes_menu[6].item_string, "%s %s", mode_strings[6],
4689 (info_window ? ON : OFF));
4690 sprintf(modes_menu[7].item_string, "%s %s", mode_strings[7],
4691 (emacs_keys_mode ? ON : OFF));
4692 sprintf(modes_menu[8].item_string, "%s %d", mode_strings[8],
4693 right_margin);
4694 sprintf(modes_menu[9].item_string, "%s %s", mode_strings[9],
4695 (ee_chinese ? ON : OFF));
4696
4697 ret_value = menu_op(modes_menu);
4698
4699 switch (ret_value)
4700 {
4701 case 1:
4702 expand_tabs = !expand_tabs;
4703 break;
4704 case 2:
4705 case_sen = !case_sen;
4706 break;
4707 case 3:
4708 observ_margins = !observ_margins;
4709 break;
4710 case 4:
4711 auto_format = !auto_format;
4712 if (auto_format)
4713 observ_margins = TRUE;
4714 break;
4715 case 5:
4716 eightbit = !eightbit;
4717 if (!eightbit)
4718 ee_chinese = FALSE;
4719 #ifdef NCURSE
4720 if (ee_chinese)
4721 nc_setattrib(A_NC_BIG5);
4722 else
4723 nc_clearattrib(A_NC_BIG5);
4724 #endif /* NCURSE */
4725
4726 redraw();
4727 wnoutrefresh(text_win);
4728 break;
4729 case 6:
4730 if (info_window)
4731 no_info_window();
4732 else
4733 create_info_window();
4734 break;
4735 case 7:
4736 emacs_keys_mode = !emacs_keys_mode;
4737 if (info_window)
4738 paint_info_win();
4739 break;
4740 case 8:
4741 string = get_string(margin_prompt, TRUE);
4742 if (string != NULL)
4743 {
4744 counter = atoi(string);
4745 if (counter > 0)
4746 right_margin = counter;
4747 free(string);
4748 }
4749 break;
4750 case 9:
4751 ee_chinese = !ee_chinese;
4752 if (ee_chinese != FALSE)
4753 eightbit = TRUE;
4754 #ifdef NCURSE
4755 if (ee_chinese)
4756 nc_setattrib(A_NC_BIG5);
4757 else
4758 nc_clearattrib(A_NC_BIG5);
4759 #endif /* NCURSE */
4760 redraw();
4761 break;
4762 default:
4763 break;
4764 }
4765 }
4766 while (ret_value != 0);
4767 }
4768
4769 char *
4770 is_in_string(char *string, char *substring)
4771 /* a strchr() look-alike for systems without strchr() */
4772 {
4773 char *full, *sub;
4774
4775 for (sub = substring; (sub != NULL) && (*sub != (char)NULL); sub++)
4776 {
4777 for (full = string; (full != NULL) && (*full != (char)NULL);
4778 full++)
4779 {
4780 if (*sub == *full)
4781 return(full);
4782 }
4783 }
4784 return(NULL);
4785 }
4786
4787 /*
4788 | handle names of the form "~/file", "~user/file",
4789 | "$HOME/foo", "~/$FOO", etc.
4790 */
4791
4792 char *
4793 resolve_name(char *name)
4794 {
4795 char long_buffer[1024];
4796 char short_buffer[128];
4797 char *buffer;
4798 char *slash;
4799 char *tmp;
4800 char *start_of_var;
4801 int offset;
4802 int index;
4803 int counter;
4804 struct passwd *user;
4805
4806 if (name[0] == '~')
4807 {
4808 if (name[1] == '/')
4809 {
4810 index = getuid();
4811 user = (struct passwd *) getpwuid(index);
4812 slash = name + 1;
4813 }
4814 else
4815 {
4816 slash = strchr(name, '/');
4817 if (slash == NULL)
4818 return(name);
4819 *slash = (char) NULL;
4820 user = (struct passwd *) getpwnam((name + 1));
4821 *slash = '/';
4822 }
4823 if (user == NULL)
4824 {
4825 return(name);
4826 }
4827 buffer = malloc(strlen(user->pw_dir) + strlen(slash) + 1);
4828 strcpy(buffer, user->pw_dir);
4829 strcat(buffer, slash);
4830 }
4831 else
4832 buffer = name;
4833
4834 if (is_in_string(buffer, "$"))
4835 {
4836 tmp = buffer;
4837 index = 0;
4838
4839 while ((*tmp != (char) NULL) && (index < 1024))
4840 {
4841
4842 while ((*tmp != (char) NULL) && (*tmp != '$') &&
4843 (index < 1024))
4844 {
4845 long_buffer[index] = *tmp;
4846 tmp++;
4847 index++;
4848 }
4849
4850 if ((*tmp == '$') && (index < 1024))
4851 {
4852 counter = 0;
4853 start_of_var = tmp;
4854 tmp++;
4855 if (*tmp == '{') /* } */ /* bracketed variable name */
4856 {
4857 tmp++; /* { */
4858 while ((*tmp != (char) NULL) &&
4859 (*tmp != '}') &&
4860 (counter < 128))
4861 {
4862 short_buffer[counter] = *tmp;
4863 counter++;
4864 tmp++;
4865 } /* { */
4866 if (*tmp == '}')
4867 tmp++;
4868 }
4869 else
4870 {
4871 while ((*tmp != (char) NULL) &&
4872 (*tmp != '/') &&
4873 (*tmp != '$') &&
4874 (counter < 128))
4875 {
4876 short_buffer[counter] = *tmp;
4877 counter++;
4878 tmp++;
4879 }
4880 }
4881 short_buffer[counter] = (char) NULL;
4882 if ((slash = getenv(short_buffer)) != NULL)
4883 {
4884 offset = strlen(slash);
4885 if ((offset + index) < 1024)
4886 strcpy(&long_buffer[index], slash);
4887 index += offset;
4888 }
4889 else
4890 {
4891 while ((start_of_var != tmp) && (index < 1024))
4892 {
4893 long_buffer[index] = *start_of_var;
4894 start_of_var++;
4895 index++;
4896 }
4897 }
4898 }
4899 }
4900
4901 if (index == 1024)
4902 return(buffer);
4903 else
4904 long_buffer[index] = (char) NULL;
4905
4906 if (name != buffer)
4907 free(buffer);
4908 buffer = malloc(index + 1);
4909 strcpy(buffer, long_buffer);
4910 }
4911
4912 return(buffer);
4913 }
4914
4915 int
4916 restrict_mode(void)
4917 {
4918 if (!restricted)
4919 return(FALSE);
4920
4921 wmove(com_win, 0, 0);
4922 wprintw(com_win, restricted_msg);
4923 wclrtoeol(com_win);
4924 wrefresh(com_win);
4925 clear_com_win = TRUE;
4926 return(TRUE);
4927 }
4928
4929 /*
4930 | The following routine tests the input string against the list of
4931 | strings, to determine if the string is a unique match with one of the
4932 | valid values.
4933 */
4934
4935 int
4936 unique_test(char *string, char **list)
4937 {
4938 int counter;
4939 int num_match;
4940 int result;
4941
4942 num_match = 0;
4943 counter = 0;
4944 while (list[counter] != NULL)
4945 {
4946 result = compare(string, list[counter], FALSE);
4947 if (result)
4948 num_match++;
4949 counter++;
4950 }
4951 return(num_match);
4952 }
4953
4954 void
4955 renumber_lines(struct text *firstline, int startnumber)
4956 {
4957 struct text *lineptr;
4958 int i;
4959
4960 i = startnumber;
4961 for (lineptr = firstline; lineptr != NULL; lineptr = lineptr->next_line)
4962 lineptr->line_number = i++;
4963 }
4964
4965 #ifndef NO_CATGETS
4966 /*
4967 | Get the catalog entry, and if it got it from the catalog,
4968 | make a copy, since the buffer will be overwritten by the
4969 | next call to catgets().
4970 */
4971
4972 char *
4973 catgetlocal(int number, char *string)
4974 {
4975 char *temp1;
4976 char *temp2;
4977
4978 temp1 = catgets(catalog, 1, number, string);
4979 if (temp1 != string)
4980 {
4981 temp2 = malloc(strlen(temp1) + 1);
4982 strcpy(temp2, temp1);
4983 temp1 = temp2;
4984 }
4985 return(temp1);
4986 }
4987 #endif /* NO_CATGETS */
4988
4989 /*
4990 | The following is to allow for using message catalogs which allow
4991 | the software to be 'localized', that is, to use different languages
4992 | all with the same binary. For more information, see your system
4993 | documentation, or the X/Open Internationalization Guide.
4994 */
4995
4996 void
4997 strings_init(void)
4998 {
4999 int counter;
5000
5001 #ifndef NO_CATGETS
5002 setlocale(LC_ALL, "");
5003 catalog = catopen("ee", NL_CAT_LOCALE);
5004 #endif /* NO_CATGETS */
5005
5006 modes_menu[0].item_string = catgetlocal( 1, "modes menu");
5007 mode_strings[1] = catgetlocal( 2, "tabs to spaces ");
5008 mode_strings[2] = catgetlocal( 3, "case sensitive search");
5009 mode_strings[3] = catgetlocal( 4, "margins observed ");
5010 mode_strings[4] = catgetlocal( 5, "auto-paragraph format");
5011 mode_strings[5] = catgetlocal( 6, "eightbit characters ");
5012 mode_strings[6] = catgetlocal( 7, "info window ");
5013 mode_strings[8] = catgetlocal( 8, "right margin ");
5014 leave_menu[0].item_string = catgetlocal( 9, "leave menu");
5015 leave_menu[1].item_string = catgetlocal( 10, "save changes");
5016 leave_menu[2].item_string = catgetlocal( 11, "no save");
5017 file_menu[0].item_string = catgetlocal( 12, "file menu");
5018 file_menu[1].item_string = catgetlocal( 13, "read a file");
5019 file_menu[2].item_string = catgetlocal( 14, "write a file");
5020 file_menu[3].item_string = catgetlocal( 15, "save file");
5021 file_menu[4].item_string = catgetlocal( 16, "print editor contents");
5022 search_menu[0].item_string = catgetlocal( 17, "search menu");
5023 search_menu[1].item_string = catgetlocal( 18, "search for ...");
5024 search_menu[2].item_string = catgetlocal( 19, "search");
5025 spell_menu[0].item_string = catgetlocal( 20, "spell menu");
5026 spell_menu[1].item_string = catgetlocal( 21, "use 'spell'");
5027 spell_menu[2].item_string = catgetlocal( 22, "use 'ispell'");
5028 misc_menu[0].item_string = catgetlocal( 23, "miscellaneous menu");
5029 misc_menu[1].item_string = catgetlocal( 24, "format paragraph");
5030 misc_menu[2].item_string = catgetlocal( 25, "shell command");
5031 misc_menu[3].item_string = catgetlocal( 26, "check spelling");
5032 main_menu[0].item_string = catgetlocal( 27, "main menu");
5033 main_menu[1].item_string = catgetlocal( 28, "leave editor");
5034 main_menu[2].item_string = catgetlocal( 29, "help");
5035 main_menu[3].item_string = catgetlocal( 30, "file operations");
5036 main_menu[4].item_string = catgetlocal( 31, "redraw screen");
5037 main_menu[5].item_string = catgetlocal( 32, "settings");
5038 main_menu[6].item_string = catgetlocal( 33, "search");
5039 main_menu[7].item_string = catgetlocal( 34, "miscellaneous");
5040 help_text[0] = catgetlocal( 35, "Control keys: ");
5041 help_text[1] = catgetlocal( 36, "^a ascii code ^i tab ^r right ");
5042 help_text[2] = catgetlocal( 37, "^b bottom of text ^j newline ^t top of text ");
5043 help_text[3] = catgetlocal( 38, "^c command ^k delete char ^u up ");
5044 help_text[4] = catgetlocal( 39, "^d down ^l left ^v undelete word ");
5045 help_text[5] = catgetlocal( 40, "^e search prompt ^m newline ^w delete word ");
5046 help_text[6] = catgetlocal( 41, "^f undelete char ^n next page ^x search ");
5047 help_text[7] = catgetlocal( 42, "^g begin of line ^o end of line ^y delete line ");
5048 help_text[8] = catgetlocal( 43, "^h backspace ^p prev page ^z undelete line ");
5049 help_text[9] = catgetlocal( 44, "^[ (escape) menu ESC-Enter: exit ee ");
5050 help_text[10] = catgetlocal( 45, " ");
5051 help_text[11] = catgetlocal( 46, "Commands: ");
5052 help_text[12] = catgetlocal( 47, "help : get this info file : print file name ");
5053 help_text[13] = catgetlocal( 48, "read : read a file char : ascii code of char ");
5054 help_text[14] = catgetlocal( 49, "write : write a file case : case sensitive search ");
5055 help_text[15] = catgetlocal( 50, "exit : leave and save nocase : case insensitive search ");
5056 help_text[16] = catgetlocal( 51, "quit : leave, no save !cmd : execute \"cmd\" in shell ");
5057 help_text[17] = catgetlocal( 52, "line : display line # 0-9 : go to line \"#\" ");
5058 help_text[18] = catgetlocal( 53, "expand : expand tabs noexpand: do not expand tabs ");
5059 help_text[19] = catgetlocal( 54, " ");
5060 help_text[20] = catgetlocal( 55, " ee [+#] [-i] [-e] [-h] [file(s)] ");
5061 help_text[21] = catgetlocal( 56, "+# :go to line # -i :no info window -e : don't expand tabs -h :no highlight");
5062 control_keys[0] = catgetlocal( 57, "^[ (escape) menu ^e search prompt ^y delete line ^u up ^p prev page ");
5063 control_keys[1] = catgetlocal( 58, "^a ascii code ^x search ^z undelete line ^d down ^n next page ");
5064 control_keys[2] = catgetlocal( 59, "^b bottom of text ^g begin of line ^w delete word ^l left ");
5065 control_keys[3] = catgetlocal( 60, "^t top of text ^o end of line ^v undelete word ^r right ");
5066 control_keys[4] = catgetlocal( 61, "^c command ^k delete char ^f undelete char ESC-Enter: exit ee ");
5067 command_strings[0] = catgetlocal( 62, "help : get help info |file : print file name |line : print line # ");
5068 command_strings[1] = catgetlocal( 63, "read : read a file |char : ascii code of char |0-9 : go to line \"#\"");
5069 command_strings[2] = catgetlocal( 64, "write: write a file |case : case sensitive search |exit : leave and save ");
5070 command_strings[3] = catgetlocal( 65, "!cmd : shell \"cmd\" |nocase: ignore case in search |quit : leave, no save");
5071 command_strings[4] = catgetlocal( 66, "expand: expand tabs |noexpand: do not expand tabs ");
5072 com_win_message = catgetlocal( 67, " press Escape (^[) for menu");
5073 no_file_string = catgetlocal( 68, "no file");
5074 ascii_code_str = catgetlocal( 69, "ascii code: ");
5075 printer_msg_str = catgetlocal( 70, "sending contents of buffer to \"%s\" ");
5076 command_str = catgetlocal( 71, "command: ");
5077 file_write_prompt_str = catgetlocal( 72, "name of file to write: ");
5078 file_read_prompt_str = catgetlocal( 73, "name of file to read: ");
5079 char_str = catgetlocal( 74, "character = %d");
5080 unkn_cmd_str = catgetlocal( 75, "unknown command \"%s\"");
5081 non_unique_cmd_msg = catgetlocal( 76, "entered command is not unique");
5082 line_num_str = catgetlocal( 77, "line %d ");
5083 line_len_str = catgetlocal( 78, "length = %d");
5084 current_file_str = catgetlocal( 79, "current file is \"%s\" ");
5085 usage0 = catgetlocal( 80, "usage: %s [-i] [-e] [-h] [+line_number] [file(s)]\n");
5086 usage1 = catgetlocal( 81, " -i turn off info window\n");
5087 usage2 = catgetlocal( 82, " -e do not convert tabs to spaces\n");
5088 usage3 = catgetlocal( 83, " -h do not use highlighting\n");
5089 file_is_dir_msg = catgetlocal( 84, "file \"%s\" is a directory");
5090 new_file_msg = catgetlocal( 85, "new file \"%s\"");
5091 cant_open_msg = catgetlocal( 86, "can't open \"%s\"");
5092 open_file_msg = catgetlocal( 87, "file \"%s\", %d lines");
5093 file_read_fin_msg = catgetlocal( 88, "finished reading file \"%s\"");
5094 reading_file_msg = catgetlocal( 89, "reading file \"%s\"");
5095 read_only_msg = catgetlocal( 90, ", read only");
5096 file_read_lines_msg = catgetlocal( 91, "file \"%s\", %d lines");
5097 save_file_name_prompt = catgetlocal( 92, "enter name of file: ");
5098 file_not_saved_msg = catgetlocal( 93, "no filename entered: file not saved");
5099 changes_made_prompt = catgetlocal( 94, "changes have been made, are you sure? (y/n [n]) ");
5100 yes_char = catgetlocal( 95, "y");
5101 file_exists_prompt = catgetlocal( 96, "file already exists, overwrite? (y/n) [n] ");
5102 create_file_fail_msg = catgetlocal( 97, "unable to create file \"%s\"");
5103 writing_file_msg = catgetlocal( 98, "writing file \"%s\"");
5104 file_written_msg = catgetlocal( 99, "\"%s\" %d lines, %d characters");
5105 searching_msg = catgetlocal( 100, " ...searching");
5106 str_not_found_msg = catgetlocal( 101, "string \"%s\" not found");
5107 search_prompt_str = catgetlocal( 102, "search for: ");
5108 exec_err_msg = catgetlocal( 103, "could not exec %s");
5109 continue_msg = catgetlocal( 104, "press return to continue ");
5110 menu_cancel_msg = catgetlocal( 105, "press Esc to cancel");
5111 menu_size_err_msg = catgetlocal( 106, "menu too large for window");
5112 press_any_key_msg = catgetlocal( 107, "press any key to continue ");
5113 shell_prompt = catgetlocal( 108, "shell command: ");
5114 formatting_msg = catgetlocal( 109, "...formatting paragraph...");
5115 shell_echo_msg = catgetlocal( 110, "<!echo 'list of unrecognized words'; echo -=-=-=-=-=-");
5116 spell_in_prog_msg = catgetlocal( 111, "sending contents of edit buffer to 'spell'");
5117 margin_prompt = catgetlocal( 112, "right margin is: ");
5118 restricted_msg = catgetlocal( 113, "restricted mode: unable to perform requested operation");
5119 ON = catgetlocal( 114, "ON");
5120 OFF = catgetlocal( 115, "OFF");
5121 HELP = catgetlocal( 116, "HELP");
5122 WRITE = catgetlocal( 117, "WRITE");
5123 READ = catgetlocal( 118, "READ");
5124 LINE = catgetlocal( 119, "LINE");
5125 FILE_str = catgetlocal( 120, "FILE");
5126 CHARACTER = catgetlocal( 121, "CHARACTER");
5127 REDRAW = catgetlocal( 122, "REDRAW");
5128 RESEQUENCE = catgetlocal( 123, "RESEQUENCE");
5129 AUTHOR = catgetlocal( 124, "AUTHOR");
5130 VERSION = catgetlocal( 125, "VERSION");
5131 CASE = catgetlocal( 126, "CASE");
5132 NOCASE = catgetlocal( 127, "NOCASE");
5133 EXPAND = catgetlocal( 128, "EXPAND");
5134 NOEXPAND = catgetlocal( 129, "NOEXPAND");
5135 Exit_string = catgetlocal( 130, "EXIT");
5136 QUIT_string = catgetlocal( 131, "QUIT");
5137 INFO = catgetlocal( 132, "INFO");
5138 NOINFO = catgetlocal( 133, "NOINFO");
5139 MARGINS = catgetlocal( 134, "MARGINS");
5140 NOMARGINS = catgetlocal( 135, "NOMARGINS");
5141 AUTOFORMAT = catgetlocal( 136, "AUTOFORMAT");
5142 NOAUTOFORMAT = catgetlocal( 137, "NOAUTOFORMAT");
5143 Echo = catgetlocal( 138, "ECHO");
5144 PRINTCOMMAND = catgetlocal( 139, "PRINTCOMMAND");
5145 RIGHTMARGIN = catgetlocal( 140, "RIGHTMARGIN");
5146 HIGHLIGHT = catgetlocal( 141, "HIGHLIGHT");
5147 NOHIGHLIGHT = catgetlocal( 142, "NOHIGHLIGHT");
5148 EIGHTBIT = catgetlocal( 143, "EIGHTBIT");
5149 NOEIGHTBIT = catgetlocal( 144, "NOEIGHTBIT");
5150 /*
5151 | additions
5152 */
5153 mode_strings[7] = catgetlocal( 145, "emacs key bindings ");
5154 emacs_help_text[0] = help_text[0];
5155 emacs_help_text[1] = catgetlocal( 146, "^a beginning of line ^i tab ^r restore word ");
5156 emacs_help_text[2] = catgetlocal( 147, "^b back 1 char ^j undel char ^t begin of file ");
5157 emacs_help_text[3] = catgetlocal( 148, "^c command ^k delete line ^u end of file ");
5158 emacs_help_text[4] = catgetlocal( 149, "^d delete char ^l undelete line ^v next page ");
5159 emacs_help_text[5] = catgetlocal( 150, "^e end of line ^m newline ^w delete word ");
5160 emacs_help_text[6] = catgetlocal( 151, "^f forward 1 char ^n next line ^x search ");
5161 emacs_help_text[7] = catgetlocal( 152, "^g go back 1 page ^o ascii char insert ^y search prompt ");
5162 emacs_help_text[8] = catgetlocal( 153, "^h backspace ^p prev line ^z next word ");
5163 emacs_help_text[9] = help_text[9];
5164 emacs_help_text[10] = help_text[10];
5165 emacs_help_text[11] = help_text[11];
5166 emacs_help_text[12] = help_text[12];
5167 emacs_help_text[13] = help_text[13];
5168 emacs_help_text[14] = help_text[14];
5169 emacs_help_text[15] = help_text[15];
5170 emacs_help_text[16] = help_text[16];
5171 emacs_help_text[17] = help_text[17];
5172 emacs_help_text[18] = help_text[18];
5173 emacs_help_text[19] = help_text[19];
5174 emacs_help_text[20] = help_text[20];
5175 emacs_help_text[21] = help_text[21];
5176 emacs_control_keys[0] = catgetlocal( 154, "^[ (escape) menu ^y search prompt ^k delete line ^p prev line ^g prev page");
5177 emacs_control_keys[1] = catgetlocal( 155, "^o ascii code ^x search ^l undelete line ^n next line ^v next page");
5178 emacs_control_keys[2] = catgetlocal( 156, "^u end of file ^a begin of line ^w delete word ^b back char ^z next word");
5179 emacs_control_keys[3] = catgetlocal( 157, "^t begin of file ^e end of line ^r restore word ^f forward char ");
5180 emacs_control_keys[4] = catgetlocal( 158, "^c command ^d delete char ^j undelete char ESC-Enter: exit");
5181 EMACS_string = catgetlocal( 159, "EMACS");
5182 NOEMACS_string = catgetlocal( 160, "NOEMACS");
5183 usage4 = catgetlocal( 161, " +# put cursor at line #\n");
5184 conf_dump_err_msg = catgetlocal( 162, "unable to open .init.ee for writing, no configuration saved!");
5185 conf_dump_success_msg = catgetlocal( 163, "ee configuration saved in file %s");
5186 modes_menu[10].item_string = catgetlocal( 164, "save editor configuration");
5187 config_dump_menu[0].item_string = catgetlocal( 165, "save ee configuration");
5188 config_dump_menu[1].item_string = catgetlocal( 166, "save in current directory");
5189 config_dump_menu[2].item_string = catgetlocal( 167, "save in home directory");
5190 conf_not_saved_msg = catgetlocal( 168, "ee configuration not saved");
5191 ree_no_file_msg = catgetlocal( 169, "must specify a file when invoking ree");
5192 menu_too_lrg_msg = catgetlocal( 180, "menu too large for window");
5193 more_above_str = catgetlocal( 181, "^^more^^");
5194 more_below_str = catgetlocal( 182, "VVmoreVV");
5195 mode_strings[9] = catgetlocal( 183, "16 bit characters ");
5196 chinese_cmd = catgetlocal( 184, "16BIT");
5197 nochinese_cmd = catgetlocal( 185, "NO16BIT");
5198
5199 commands[0] = HELP;
5200 commands[1] = WRITE;
5201 commands[2] = READ;
5202 commands[3] = LINE;
5203 commands[4] = FILE_str;
5204 commands[5] = REDRAW;
5205 commands[6] = RESEQUENCE;
5206 commands[7] = AUTHOR;
5207 commands[8] = VERSION;
5208 commands[9] = CASE;
5209 commands[10] = NOCASE;
5210 commands[11] = EXPAND;
5211 commands[12] = NOEXPAND;
5212 commands[13] = Exit_string;
5213 commands[14] = QUIT_string;
5214 commands[15] = "<";
5215 commands[16] = ">";
5216 commands[17] = "!";
5217 commands[18] = "0";
5218 commands[19] = "1";
5219 commands[20] = "2";
5220 commands[21] = "3";
5221 commands[22] = "4";
5222 commands[23] = "5";
5223 commands[24] = "6";
5224 commands[25] = "7";
5225 commands[26] = "8";
5226 commands[27] = "9";
5227 commands[28] = CHARACTER;
5228 commands[29] = chinese_cmd;
5229 commands[30] = nochinese_cmd;
5230 commands[31] = NULL;
5231 init_strings[0] = CASE;
5232 init_strings[1] = NOCASE;
5233 init_strings[2] = EXPAND;
5234 init_strings[3] = NOEXPAND;
5235 init_strings[4] = INFO;
5236 init_strings[5] = NOINFO;
5237 init_strings[6] = MARGINS;
5238 init_strings[7] = NOMARGINS;
5239 init_strings[8] = AUTOFORMAT;
5240 init_strings[9] = NOAUTOFORMAT;
5241 init_strings[10] = Echo;
5242 init_strings[11] = PRINTCOMMAND;
5243 init_strings[12] = RIGHTMARGIN;
5244 init_strings[13] = HIGHLIGHT;
5245 init_strings[14] = NOHIGHLIGHT;
5246 init_strings[15] = EIGHTBIT;
5247 init_strings[16] = NOEIGHTBIT;
5248 init_strings[17] = EMACS_string;
5249 init_strings[18] = NOEMACS_string;
5250 init_strings[19] = chinese_cmd;
5251 init_strings[20] = nochinese_cmd;
5252 init_strings[21] = NULL;
5253
5254 /*
5255 | allocate space for strings here for settings menu
5256 */
5257
5258 for (counter = 1; counter < NUM_MODES_ITEMS; counter++)
5259 {
5260 modes_menu[counter].item_string = malloc(80);
5261 }
5262
5263 #ifndef NO_CATGETS
5264 catclose(catalog);
5265 #endif /* NO_CATGETS */
5266 }
5267
DragonFly BSD