src/editor/edit-impl.h

   1 /*
   2    editor private API
   3  */
   4
   5 /** \file edit-impl.h
   6  *  \brief Header: editor low level data handling and cursor fundamentals
   7  *  \author Paul Sheer
   8  *  \date 1996, 1997
   9  */
  10
  11 #ifndef MC__EDIT_IMPL_H
  12 #define MC__EDIT_IMPL_H
  13
  14 #include <stdio.h>
  15
  16 #include "lib/search.h"         /* mc_search_type_t */
  17 #include "lib/widget.h"         /* cb_ret_t */
  18 #include "lib/vfs/vfs.h"        /* vfs_path_t */
  19
  20 #include "edit.h"
  21
  22 /*** typedefs(not structures) and defined constants **********************************************/
  23
  24 #define REDRAW_LINE          (1 << 0)
  25 #define REDRAW_LINE_ABOVE    (1 << 1)
  26 #define REDRAW_LINE_BELOW    (1 << 2)
  27 #define REDRAW_AFTER_CURSOR  (1 << 3)
  28 #define REDRAW_BEFORE_CURSOR (1 << 4)
  29 #define REDRAW_PAGE          (1 << 5)
  30 #define REDRAW_IN_BOUNDS     (1 << 6)
  31 #define REDRAW_CHAR_ONLY     (1 << 7)
  32 #define REDRAW_COMPLETELY    (1 << 8)
  33
  34 #define EDIT_TEXT_HORIZONTAL_OFFSET 0
  35 #define EDIT_TEXT_VERTICAL_OFFSET   0
  36
  37 #define EDIT_RIGHT_EXTREME 0
  38 #define EDIT_LEFT_EXTREME 0
  39 #define EDIT_TOP_EXTREME 0
  40 #define EDIT_BOTTOM_EXTREME 0
  41
  42 /* Initial size of the undo stack, in bytes */
  43 #define START_STACK_SIZE 32
  44
  45 /* Some codes that may be pushed onto or returned from the undo stack */
  46 #define CURS_LEFT       601
  47 #define CURS_RIGHT      602
  48 #define DELCHAR         603
  49 #define BACKSPACE       604
  50 #define STACK_BOTTOM    605
  51 #define CURS_LEFT_LOTS  606
  52 #define CURS_RIGHT_LOTS 607
  53 #define COLUMN_ON       608
  54 #define COLUMN_OFF      609
  55 #define DELCHAR_BR      610
  56 #define BACKSPACE_BR    611
  57 #define MARK_1          1000
  58 #define MARK_2          500000000
  59 #define MARK_CURS       1000000000
  60 #define KEY_PRESS       1500000000
  61
  62 /* Tabs spaces: (sofar only HALF_TAB_SIZE is used: */
  63 #define TAB_SIZE      option_tab_spacing
  64 #define HALF_TAB_SIZE ((int) option_tab_spacing / 2)
  65
  66 /* max count stack files */
  67 #define MAX_HISTORY_MOVETO     50
  68 #define LINE_STATE_WIDTH 8
  69
  70 #define LB_NAMES (LB_MAC + 1)
  71
  72 #define get_sys_error(s) (s)
  73
  74 #define edit_error_dialog(h,s) query_dialog (h, s, D_ERROR, 1, _("&Dismiss"))
  75 #define edit_query_dialog(h,s) query_dialog (h, s, D_NORMAL, 1, _("&Dismiss"))
  76 #define edit_query_dialog2(h,t,a,b) query_dialog (h, t, D_NORMAL, 2, a, b)
  77 #define edit_query_dialog3(h,t,a,b,c) query_dialog (h, t, D_NORMAL, 3, a, b, c)
  78
  79 /*** enums ***************************************************************************************/
  80
  81 /* line breaks */
  82 typedef enum
  83 {
  84     LB_ASIS = 0,
  85     LB_UNIX,
  86     LB_WIN,
  87     LB_MAC
  88 } LineBreaks;
  89
  90 typedef enum
  91 {
  92     EDIT_QUICK_SAVE = 0,
  93     EDIT_SAFE_SAVE,
  94     EDIT_DO_BACKUP
  95 } edit_save_mode_t;
  96
  97 /*** structures declarations (and typedefs of structures)*****************************************/
  98
  99 /* search/replace options */
 100 typedef struct edit_search_options_t
 101 {
 102     mc_search_type_t type;
 103     gboolean case_sens;
 104     gboolean backwards;
 105     gboolean only_in_selection;
 106     gboolean whole_words;
 107     gboolean all_codepages;
 108 } edit_search_options_t;
 109
 110 typedef struct edit_stack_type
 111 {
 112     long line;
 113     vfs_path_t *filename_vpath;
 114 } edit_stack_type;
 115
 116 /*** global variables defined in .c file *********************************************************/
 117
 118 extern const char VERTICAL_MAGIC[5];
 119 /* if enable_show_tabs_tws == TRUE then use visible_tab visible_tws */
 120 extern gboolean enable_show_tabs_tws;
 121
 122 extern edit_search_options_t edit_search_options;
 123
 124 extern unsigned int edit_stack_iterator;
 125 extern edit_stack_type edit_history_moveto[MAX_HISTORY_MOVETO];
 126
 127 extern int option_line_state_width;
 128
 129 extern int option_max_undo;
 130 extern gboolean option_auto_syntax;
 131
 132 extern gboolean search_create_bookmark;
 133
 134 extern char *edit_window_state_char;
 135 extern char *edit_window_close_char;
 136
 137 /*** declarations of public functions ************************************************************/
 138
 139 gboolean edit_add_window (WDialog * h, int y, int x, int lines, int cols,
 140                           const vfs_path_t * f, long fline);
 141 WEdit *find_editor (const WDialog * h);
 142 gboolean edit_widget_is_editor (const Widget * w);
 143 gboolean edit_drop_hotkey_menu (WDialog * h, int key);
 144 void edit_menu_cmd (WDialog * h);
 145 void user_menu (WEdit * edit, const char *menu_file, int selected_entry);
 146 void edit_init_menu (WMenuBar * menubar);
 147 void edit_save_mode_cmd (void);
 148 off_t edit_move_forward3 (const WEdit * edit, off_t current, long cols, off_t upto);
 149 void edit_scroll_screen_over_cursor (WEdit * edit);
 150 void edit_render_keypress (WEdit * edit);
 151 void edit_scroll_upward (WEdit * edit, long i);
 152 void edit_scroll_downward (WEdit * edit, long i);
 153 void edit_scroll_right (WEdit * edit, long i);
 154 void edit_scroll_left (WEdit * edit, long i);
 155 void edit_move_up (WEdit * edit, long i, gboolean do_scroll);
 156 void edit_move_down (WEdit * edit, long i, gboolean do_scroll);
 157 void edit_move_to_prev_col (WEdit * edit, off_t p);
 158 long edit_get_col (const WEdit * edit);
 159 void edit_update_curs_row (WEdit * edit);
 160 void edit_update_curs_col (WEdit * edit);
 161 void edit_find_bracket (WEdit * edit);
 162 gboolean edit_reload_line (WEdit * edit, const vfs_path_t * filename_vpath, long line);
 163 void edit_set_codeset (WEdit * edit);
 164
 165 void edit_block_copy_cmd (WEdit * edit);
 166 void edit_block_move_cmd (WEdit * edit);
 167 int edit_block_delete_cmd (WEdit * edit);
 168 void edit_delete_line (WEdit * edit);
 169
 170 int edit_delete (WEdit * edit, gboolean byte_delete);
 171 int edit_backspace (WEdit * edit, gboolean byte_delete);
 172 void edit_insert (WEdit * edit, int c);
 173 void edit_insert_over (WEdit * edit);
 174 void edit_cursor_move (WEdit * edit, off_t increment);
 175 void edit_push_undo_action (WEdit * edit, long c);
 176 void edit_push_redo_action (WEdit * edit, long c);
 177 void edit_push_key_press (WEdit * edit);
 178 void edit_insert_ahead (WEdit * edit, int c);
 179 off_t edit_write_stream (WEdit * edit, FILE * f);
 180 char *edit_get_write_filter (const vfs_path_t * write_name_vpath,
 181                              const vfs_path_t * filename_vpath);
 182 gboolean edit_save_confirm_cmd (WEdit * edit);
 183 gboolean edit_save_as_cmd (WEdit * edit);
 184 WEdit *edit_init (WEdit * edit, int y, int x, int lines, int cols,
 185                   const vfs_path_t * filename_vpath, long line);
 186 gboolean edit_clean (WEdit * edit);
 187 gboolean edit_ok_to_exit (WEdit * edit);
 188 gboolean edit_load_cmd (WDialog * h);
 189 gboolean edit_load_syntax_file (WDialog * h);
 190 gboolean edit_load_menu_file (WDialog * h);
 191 gboolean edit_close_cmd (WEdit * edit);
 192 void edit_mark_cmd (WEdit * edit, gboolean unmark);
 193 void edit_mark_current_word_cmd (WEdit * edit);
 194 void edit_mark_current_line_cmd (WEdit * edit);
 195 void edit_set_markers (WEdit * edit, off_t m1, off_t m2, long c1, long c2);
 196 void edit_push_markers (WEdit * edit);
 197 void edit_replace_cmd (WEdit * edit, gboolean again);
 198 void edit_search_cmd (WEdit * edit, gboolean again);
 199 mc_search_cbret_t edit_search_cmd_callback (const void *user_data, gsize char_offset,
 200                                             int *current_char);
 201 mc_search_cbret_t edit_search_update_callback (const void *user_data, gsize char_offset);
 202
 203 void edit_complete_word_cmd (WEdit * edit);
 204 void edit_get_match_keyword_cmd (WEdit * edit);
 205
 206 #ifdef HAVE_ASPELL
 207 int edit_suggest_current_word (WEdit * edit);
 208 void edit_spellcheck_file (WEdit * edit);
 209 void edit_set_spell_lang (void);
 210 #endif
 211
 212 gboolean edit_save_block (WEdit * edit, const char *filename, off_t start, off_t finish);
 213 gboolean edit_save_block_cmd (WEdit * edit);
 214 gboolean edit_insert_file_cmd (WEdit * edit);
 215
 216 off_t edit_insert_file (WEdit * edit, const vfs_path_t * filename_vpath);
 217 gboolean edit_load_back_cmd (WEdit * edit);
 218 gboolean edit_load_forward_cmd (WEdit * edit);
 219 void edit_block_process_cmd (WEdit * edit, int macro_number);
 220 void edit_refresh_cmd (void);
 221 void edit_syntax_onoff_cmd (WDialog * h);
 222 void edit_show_tabs_tws_cmd (WDialog * h);
 223 void edit_show_margin_cmd (WDialog * h);
 224 void edit_show_numbers_cmd (WDialog * h);
 225 void edit_date_cmd (WEdit * edit);
 226 void edit_goto_cmd (WEdit * edit);
 227 gboolean eval_marks (WEdit * edit, off_t * start_mark, off_t * end_mark);
 228 void edit_status (WEdit * edit, gboolean active);
 229 void edit_execute_key_command (WEdit * edit, long command, int char_for_insertion);
 230 void edit_update_screen (WEdit * edit);
 231 void edit_save_size (WEdit * edit);
 232 gboolean edit_handle_move_resize (WEdit * edit, long command);
 233 void edit_toggle_fullscreen (WEdit * edit);
 234 void edit_move_to_line (WEdit * e, long line);
 235 void edit_move_display (WEdit * e, long line);
 236 void edit_word_wrap (WEdit * edit);
 237 int edit_sort_cmd (WEdit * edit);
 238 int edit_ext_cmd (WEdit * edit);
 239
 240 int edit_store_macro_cmd (WEdit * edit);
 241 gboolean edit_load_macro_cmd (WEdit * edit);
 242 void edit_delete_macro_cmd (WEdit * edit);
 243 gboolean edit_repeat_macro_cmd (WEdit * edit);
 244
 245 gboolean edit_copy_to_X_buf_cmd (WEdit * edit);
 246 gboolean edit_cut_to_X_buf_cmd (WEdit * edit);
 247 gboolean edit_paste_from_X_buf_cmd (WEdit * edit);
 248
 249 void edit_select_codepage_cmd (WEdit * edit);
 250 void edit_insert_literal_cmd (WEdit * edit);
 251 gboolean edit_execute_macro (WEdit * edit, int hotkey);
 252 void edit_begin_end_macro_cmd (WEdit * edit);
 253 void edit_begin_end_repeat_cmd (WEdit * edit);
 254
 255 void edit_paste_from_history (WEdit * edit);
 256
 257 void edit_set_filename (WEdit * edit, const vfs_path_t * name_vpath);
 258
 259 void edit_load_syntax (WEdit * edit, GPtrArray * pnames, const char *type);
 260 void edit_free_syntax_rules (WEdit * edit);
 261 int edit_get_syntax_color (WEdit * edit, off_t byte_index);
 262
 263 void book_mark_insert (WEdit * edit, long line, int c);
 264 gboolean book_mark_query_color (WEdit * edit, long line, int c);
 265 struct edit_book_mark_t *book_mark_find (WEdit * edit, long line);
 266 gboolean book_mark_clear (WEdit * edit, long line, int c);
 267 void book_mark_flush (WEdit * edit, int c);
 268 void book_mark_inc (WEdit * edit, long line);
 269 void book_mark_dec (WEdit * edit, long line);
 270 void book_mark_serialize (WEdit * edit, int color);
 271 void book_mark_restore (WEdit * edit, int color);
 272
 273 gboolean edit_line_is_blank (WEdit * edit, long line);
 274 gboolean is_break_char (char c);
 275 void edit_options_dialog (WDialog * h);
 276 void edit_syntax_dialog (WEdit * edit);
 277 void edit_mail_dialog (WEdit * edit);
 278 void format_paragraph (WEdit * edit, gboolean force);
 279
 280 /* either command or char_for_insertion must be passed as -1 */
 281 void edit_execute_cmd (WEdit * edit, long command, int char_for_insertion);
 282
 283 /*** inline functions ****************************************************************************/
 284
 285 /**
 286  * Load a new file into the editor.  If it fails, preserve the old file.
 287  * To do it, allocate a new widget, initialize it and, if the new file
 288  * was loaded, copy the data to the old widget.
 289  *
 290  * @return TRUE on success, FALSE on failure.
 291  */
 292 static inline gboolean
 293 edit_reload (WEdit * edit, const vfs_path_t * filename_vpath)
 294 {
 295     return edit_reload_line (edit, filename_vpath, 0);
 296 }
 297
 298 #endif /* MC__EDIT_IMPL_H */