edit/usermap.c

   1 /* cooledit.bindings file parser
   2
   3    Authors: 2005 Vitja Makarov
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 2 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program; if not, write to the Free Software
  17    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307, USA.
  19 */
  20
  21 /** \file
  22  *  \brief Source: cooledit.bindings file parser
  23  *  \author Vitja Makarov
  24  *  \date 2005
  25  */
  26
  27 #include <config.h>
  28
  29 #include <ctype.h>
  30 #include <errno.h>
  31 #include <stdarg.h>
  32 #include <stdio.h>
  33 #include <stdlib.h>
  34 #include <string.h>
  35 #include <sys/types.h>
  36 #include <sys/stat.h>
  37 #include <unistd.h>
  38
  39 #include "../src/global.h"
  40
  41 #include "../src/tty/tty.h"     /* keys */
  42 #include "../src/tty/key.h"     /* KEY_M_* */
  43
  44 #include "edit-impl.h"
  45 #include "edit-widget.h"
  46 #include "editcmddef.h"         /* list of commands */
  47 #include "usermap.h"
  48
  49 #include "../src/wtools.h"
  50 #include "../src/widget.h"      /* buttonbar_redraw() */
  51
  52 typedef struct NameMap {
  53     const char *name;
  54     int val;
  55 } name_map_t;
  56
  57 typedef struct Config {
  58     time_t mtime;       /* mtime at the moment we read config file */
  59     GArray *keymap;
  60     GArray *ext_keymap;
  61     gchar *labels[10];
  62 } config_t;
  63
  64 typedef struct Command {
  65     const char *name;
  66     int (*handler) (config_t *cfg, int argc, char *argv[]);
  67 } command_t;
  68
  69 static char error_msg[200] = "Nobody see this";
  70
  71 static const name_map_t key_names[] = {
  72     {"backspace", KEY_BACKSPACE},
  73     {"end", KEY_END},
  74     {"up", KEY_UP},
  75     {"down", KEY_DOWN},
  76     {"left", KEY_LEFT},
  77     {"right", KEY_RIGHT},
  78     {"home", KEY_HOME},
  79     {"a1", KEY_A1},
  80     {"c1", KEY_C1},
  81     {"npage", KEY_NPAGE},
  82     {"ppage", KEY_PPAGE},
  83     {"ic", KEY_IC},
  84     {"enter", KEY_ENTER},
  85     {"dc", KEY_DC},
  86     {"scancel", KEY_SCANCEL},
  87     {"btab", KEY_BTAB},
  88     {"f11", KEY_F(11)},
  89     {"f12", KEY_F(12)},
  90     {"f13", KEY_F(13)},
  91     {"f14", KEY_F(14)},
  92     {"f15", KEY_F(15)},
  93     {"f16", KEY_F(16)},
  94     {"f17", KEY_F(17)},
  95     {"f18", KEY_F(18)},
  96     {"f19", KEY_F(19)},
  97     {"f20", KEY_F(20)},
  98     {"tab", '\t'},
  99     {"return", '\n'},
 100     {NULL, 0}
 101 };
 102
 103 static const name_map_t command_names[] = {
 104     {"No-Command", CK_Ignore_Key},
 105     {"Ignore-Key", CK_Ignore_Key},
 106     {"BackSpace", CK_BackSpace},
 107     {"Delete", CK_Delete},
 108     {"Enter", CK_Enter},
 109     {"Page-Up", CK_Page_Up},
 110     {"Page-Down", CK_Page_Down},
 111     {"Left", CK_Left},
 112     {"Right", CK_Right},
 113     {"Word-Left", CK_Word_Left},
 114     {"Word-Right", CK_Word_Right},
 115     {"Up", CK_Up},
 116     {"Down", CK_Down},
 117     {"Home", CK_Home},
 118     {"End", CK_End},
 119     {"Tab", CK_Tab},
 120     {"Undo", CK_Undo},
 121     {"Beginning-Of-Text", CK_Beginning_Of_Text},
 122     {"End-Of-Text", CK_End_Of_Text},
 123     {"Scroll-Up", CK_Scroll_Up},
 124     {"Scroll-Down", CK_Scroll_Down},
 125     {"Return", CK_Return},
 126     {"Begin-Page", CK_Begin_Page},
 127     {"End-Page", CK_End_Page},
 128     {"Delete-Word-Left", CK_Delete_Word_Left},
 129     {"Delete-Word-Right", CK_Delete_Word_Right},
 130     {"Paragraph-Up", CK_Paragraph_Up},
 131     {"Paragraph-Down", CK_Paragraph_Down},
 132     {"Save", CK_Save},
 133     {"Load", CK_Load},
 134     {"New", CK_New},
 135     {"Save-as", CK_Save_As},
 136     {"Mark", CK_Mark},
 137     {"Copy", CK_Copy},
 138     {"Move", CK_Move},
 139     {"Remove", CK_Remove},
 140     {"Unmark", CK_Unmark},
 141     {"Save-Block", CK_Save_Block},
 142     {"Column-Mark", CK_Column_Mark},
 143     {"Find", CK_Find},
 144     {"Find-Again", CK_Find_Again},
 145     {"Replace", CK_Replace},
 146     {"Replace-Again", CK_Replace_Again},
 147     {"Complete-Word", CK_Complete_Word},
 148     {"Debug-Start", CK_Debug_Start},
 149     {"Debug-Stop", CK_Debug_Stop},
 150     {"Debug-Toggle-Break", CK_Debug_Toggle_Break},
 151     {"Debug-Clear", CK_Debug_Clear},
 152     {"Debug-Next", CK_Debug_Next},
 153     {"Debug-Step", CK_Debug_Step},
 154     {"Debug-Back-Trace", CK_Debug_Back_Trace},
 155     {"Debug-Continue", CK_Debug_Continue},
 156     {"Debug-Enter-Command", CK_Debug_Enter_Command},
 157     {"Debug-Until-Curser", CK_Debug_Until_Curser},
 158     {"Insert-File", CK_Insert_File},
 159     {"Exit", CK_Exit},
 160     {"Toggle-Insert", CK_Toggle_Insert},
 161     {"Help", CK_Help},
 162     {"Date", CK_Date},
 163     {"Refresh", CK_Refresh},
 164     {"Goto", CK_Goto},
 165     {"Delete-Line", CK_Delete_Line},
 166     {"Delete-To-Line-End", CK_Delete_To_Line_End},
 167     {"Delete-To-Line-Begin", CK_Delete_To_Line_Begin},
 168     {"Man-Page", CK_Man_Page},
 169     {"Sort", CK_Sort},
 170     {"Mail", CK_Mail},
 171     {"Cancel", CK_Cancel},
 172     {"Complete", CK_Complete},
 173     {"Paragraph-Format", CK_Paragraph_Format},
 174     {"Util", CK_Util},
 175     {"Type-Load-Python", CK_Type_Load_Python},
 176     {"Find-File", CK_Find_File},
 177     {"Ctags", CK_Ctags},
 178     {"Match-Bracket", CK_Match_Bracket},
 179     {"Terminal", CK_Terminal},
 180     {"Terminal-App", CK_Terminal_App},
 181     {"ExtCmd", CK_ExtCmd},
 182     {"User-Menu", CK_User_Menu},
 183     {"Save-Desktop", CK_Save_Desktop},
 184     {"New-Window", CK_New_Window},
 185     {"Cycle", CK_Cycle},
 186     {"Menu", CK_Menu},
 187     {"Save-And-Quit", CK_Save_And_Quit},
 188     {"Run-Another", CK_Run_Another},
 189     {"Check-Save-And-Quit", CK_Check_Save_And_Quit},
 190     {"Maximize", CK_Maximize},
 191     {"Begin-Record-Macro", CK_Begin_Record_Macro},
 192     {"End-Record-Macro", CK_End_Record_Macro},
 193     {"Delete-Macro", CK_Delete_Macro},
 194     {"Toggle-Bookmark", CK_Toggle_Bookmark},
 195     {"Flush-Bookmarks", CK_Flush_Bookmarks},
 196     {"Next-Bookmark", CK_Next_Bookmark},
 197     {"Prev-Bookmark", CK_Prev_Bookmark},
 198     {"Page-Up-Highlight", CK_Page_Up_Highlight},
 199     {"Page-Down-Highlight", CK_Page_Down_Highlight},
 200     {"Left-Highlight", CK_Left_Highlight},
 201     {"Right-Highlight", CK_Right_Highlight},
 202     {"Word-Left-Highlight", CK_Word_Left_Highlight},
 203     {"Word-Right-Highlight", CK_Word_Right_Highlight},
 204     {"Up-Highlight", CK_Up_Highlight},
 205     {"Down-Highlight", CK_Down_Highlight},
 206     {"Home-Highlight", CK_Home_Highlight},
 207     {"End-Highlight", CK_End_Highlight},
 208     {"Beginning-Of-Text-Highlight", CK_Beginning_Of_Text_Highlight},
 209     {"End-Of-Text_Highlight", CK_End_Of_Text_Highlight},
 210     {"Begin-Page-Highlight", CK_Begin_Page_Highlight},
 211     {"End-Page-Highlight", CK_End_Page_Highlight},
 212     {"Scroll-Up-Highlight", CK_Scroll_Up_Highlight},
 213     {"Scroll-Down-Highlight", CK_Scroll_Down_Highlight},
 214     {"Paragraph-Up-Highlight", CK_Paragraph_Up_Highlight},
 215     {"Paragraph-Down-Highlight", CK_Paragraph_Down_Highlight},
 216     {"XStore", CK_XStore},
 217     {"XCut", CK_XCut},
 218     {"XPaste", CK_XPaste},
 219     {"Selection-History", CK_Selection_History},
 220     {"Shell", CK_Shell},
 221     {"Select-Codepage", CK_Select_Codepage},
 222     {"Insert-Literal", CK_Insert_Literal},
 223     {"Execute-Macro", CK_Execute_Macro},
 224     {"Begin-or-End-Macro", CK_Begin_End_Macro},
 225     {"Ext-mode", CK_Ext_Mode},
 226     {"Toggle-Line-State", CK_Toggle_Line_State},
 227 #if 0
 228     {"Focus-Next", CK_Focus_Next},
 229     {"Focus-Prev", CK_Focus_Prev},
 230     {"Height-Inc", CK_Height_Inc},
 231     {"Height-Dec", CK_Height_Dec},
 232     {"Make", CK_Make},
 233     {"Error-Next", CK_Error_Next},
 234     {"Error-Prev", CK_Error_Prev},
 235 #endif
 236     {NULL, 0}
 237 };
 238
 239 static void
 240 cfg_free_maps(config_t *cfg)
 241 {
 242     int i;
 243
 244     if (cfg->keymap)
 245         g_array_free(cfg->keymap, TRUE);
 246     cfg->keymap = NULL;
 247     if (cfg->ext_keymap)
 248         g_array_free(cfg->ext_keymap, TRUE);
 249     cfg->ext_keymap = NULL;
 250
 251     for (i = 0; i < 10; i++)
 252         g_free(cfg->labels[i]);
 253 }
 254
 255 /* Returns an array containing the words in str.  WARNING: As long as
 256  * the result is used, str[...] must be valid memory.  This function
 257  * modifies str[...] and uses it, so the caller should not use it until
 258  * g_ptr_array_free() is called for the returned result.
 259  */
 260 static GPtrArray *
 261 split_line(char *str)
 262 {
 263     gboolean inside_quote = FALSE;
 264     int move = 0;
 265     GPtrArray *args;
 266
 267     args = g_ptr_array_new();
 268
 269     /* skip spaces */
 270     while (isspace((unsigned char) *str))
 271         str++;
 272
 273     g_ptr_array_add(args, str);
 274
 275     for (;; str++) {
 276         switch (*str) {
 277         case '#':               /* cut off comments */
 278             if (inside_quote)
 279                 break;
 280             /* FALLTHROUGH */
 281
 282         case '\n':              /* end of line */
 283         case '\r':
 284         case '\0':
 285             if (str == g_ptr_array_index(args, args->len - 1))
 286                 g_ptr_array_remove_index(args, args->len - 1);
 287             else
 288                 *(str - move) = '\0';
 289             return args;
 290
 291         case '"':               /* quote */
 292         case '\'':
 293             inside_quote = !inside_quote;
 294             move++;
 295             continue;
 296
 297         case ' ':               /* spaces */
 298         case '\t':
 299             if (inside_quote)
 300                 break;
 301
 302             *(str++ - move) = '\0';
 303             move = 0;
 304
 305             /* skip spaces */
 306             while (isspace((unsigned char) *str))
 307                 str++;
 308
 309             g_ptr_array_add(args, str--);
 310             break;
 311
 312         case '\\':
 313             switch (*(++str)) {
 314             case 'n':
 315                 *str = '\n';
 316                 break;
 317             case 'r':
 318                 *str = '\r';
 319                 break;
 320             case 't':
 321                 *str = '\t';
 322                 break;
 323             }
 324             move++;
 325             break;
 326         }
 327         if (move != 0)
 328             *(str - move) = *str;
 329     }
 330     /* never be here */
 331 }
 332
 333 static void
 334 keymap_add(GArray *keymap, int key, int cmd)
 335 {
 336     edit_key_map_type new_one, *map;
 337     guint i;
 338
 339     map = &(g_array_index(keymap, edit_key_map_type, 0));
 340     for (i = 0; i < keymap->len; i++) {
 341         if (map[i].key == key) {
 342             map[i].command = cmd;
 343             return;
 344         }
 345     }
 346
 347     new_one.key = key;
 348     new_one.command = cmd;
 349     g_array_append_val(keymap, new_one);
 350 }
 351
 352 /* bind <key> <command> */
 353 static gboolean
 354 cmd_bind(config_t *cfg, int argc, char *argv[])
 355 {
 356     char *keyname, *command;
 357     const name_map_t *key = key_names;
 358     const name_map_t *cmd = command_names;
 359     int mod = 0, k = -1, m = 0;
 360
 361     if (argc != 3) {
 362         snprintf(error_msg, sizeof(error_msg),
 363                  _("bind: Wrong argument number, bind <key> <command>"));
 364         return FALSE;
 365     }
 366
 367     keyname = argv[1];
 368     command = argv[2];
 369
 370     while (*keyname) {
 371         switch (*keyname++) {
 372         case 'C':
 373             m = KEY_M_CTRL;
 374             continue;
 375         case 'M':
 376         case 'A':
 377             m = KEY_M_ALT;
 378             continue;
 379         case 'S':
 380             m = KEY_M_SHIFT;
 381             continue;
 382         case '-':
 383             if (!m) {           /* incorrect key */
 384                 snprintf(error_msg, sizeof(error_msg),
 385                          _("bind: Bad key value `%s'"), keyname);
 386                 return FALSE;
 387             }
 388             mod |= m;
 389             m = 0;
 390             continue;
 391         }
 392         keyname--;
 393         break;
 394     }
 395
 396     /* no key */
 397     if (keyname[0] == '\0') {
 398         snprintf(error_msg, sizeof(error_msg), _("bind: Ehh...no key?"));
 399         return FALSE;
 400     }
 401
 402     /* ordinary key */
 403     if (keyname[1] == '\0') {
 404         k = keyname[0];
 405     } else {
 406         while (key->name && strcasecmp(key->name, keyname) != 0)
 407             key++;
 408     }
 409
 410     if (k < 0 && !key->name) {
 411         snprintf(error_msg, sizeof(error_msg),
 412                  _("bind: Unknown key: `%s'"), keyname);
 413         return FALSE;
 414     }
 415
 416     while (cmd->name && strcasecmp(cmd->name, command) != 0)
 417         cmd++;
 418
 419     if (!cmd->name) {
 420         snprintf(error_msg, sizeof(error_msg),
 421                  _("bind: Unknown command: `%s'"), command);
 422         return FALSE;
 423     }
 424
 425     if (mod & KEY_M_CTRL) {
 426         if (k < 256)
 427             k = XCTRL(k);
 428         else
 429             k |= KEY_M_CTRL;
 430     }
 431
 432     if (mod & KEY_M_ALT)
 433         k |= KEY_M_ALT;
 434
 435     if (mod & KEY_M_SHIFT)
 436         k |= KEY_M_SHIFT;
 437
 438     if (!strcasecmp("bind-ext", argv[0]))
 439         keymap_add(cfg->ext_keymap, k, cmd->val);
 440     else
 441         keymap_add(cfg->keymap, k, cmd->val);
 442
 443     return TRUE;
 444 }
 445
 446 #if 0
 447 #define CMD_F(x)                                \
 448     static void cmd_F ## x (WEdit * edit)       \
 449     {                                           \
 450         send_message ((Widget *) edit, WIDGET_KEY, KEY_F (x));  \
 451     }
 452
 453 CMD_F(1)
 454 CMD_F(2)
 455 CMD_F(3)
 456 CMD_F(4)
 457 CMD_F(5)
 458 CMD_F(6)
 459 CMD_F(7)
 460 CMD_F(8)
 461 CMD_F(9)
 462 CMD_F(10)
 463
 464 void (*cmd_Fx[]) (WEdit *) = {
 465     cmd_F1, cmd_F2, cmd_F3, cmd_F4, cmd_F5,
 466     cmd_F6, cmd_F7, cmd_F8, cmd_F9, cmd_F10
 467 } ;
 468
 469 /* move me! */
 470 static void edit_my_define (Dlg_head * h, int idx, const char *text,
 471                             void (*fn) (WEdit *), WEdit * edit)
 472 {
 473     /* function-cast ok */
 474     buttonbar_set_label_data (h, idx, text, (buttonbarfn) fn, edit);
 475 }
 476 #endif
 477
 478 /* label <number> <command> <label> */
 479 static gboolean
 480 cmd_label(config_t *cfg, int argc, char *argv[])
 481 {
 482     const name_map_t *cmd = command_names;
 483     const char *command, *label;
 484     int fn;
 485
 486     if (argc != 4) {
 487         snprintf(error_msg, sizeof(error_msg),
 488                  _("%s: Syntax: %s <n> <command> <label>"),
 489                 argv[0], argv[0]);
 490         return FALSE;
 491     }
 492
 493     fn  = strtol(argv[1], NULL, 0);
 494     command = argv[2];
 495     label = argv[3];
 496
 497     while (cmd->name && strcasecmp(cmd->name, command) != 0)
 498         cmd++;
 499
 500     if (!cmd->name) {
 501         snprintf(error_msg, sizeof(error_msg),
 502                  _("%s: Unknown command: `%s'"), argv[0], command);
 503         return FALSE;
 504     }
 505
 506     if (fn < 1 || fn > 10) {
 507         snprintf(error_msg, sizeof(error_msg),
 508                  _("%s: fn should be 1-10"), argv[0]);
 509         return FALSE;
 510     }
 511
 512     keymap_add(cfg->keymap, KEY_F(fn), cmd->val);
 513     cfg->labels[fn - 1] = g_strdup(label);
 514
 515     return TRUE;
 516 }
 517
 518
 519 static gboolean
 520 parse_file(config_t *cfg, const char *file, const command_t *cmd)
 521 {
 522     char buf[200];
 523     int line = 0;
 524
 525     FILE *fp = fopen(file, "r");
 526
 527     if (!fp) {
 528         snprintf(error_msg, sizeof(error_msg), _("%s: fopen(): %s"),
 529                  file, strerror(errno));
 530         return FALSE;
 531     }
 532
 533     while (fgets(buf, sizeof(buf), fp)) {
 534         const command_t *c = cmd;
 535         GPtrArray *args;
 536         char **argv;
 537
 538         line++;
 539
 540         args = split_line(buf);
 541         argv = (char **) args->pdata;
 542
 543         if (args->len == 0) {
 544             g_ptr_array_free(args, TRUE);
 545             continue;
 546         }
 547
 548         while (c->name != NULL && strcasecmp(c->name, argv[0]) != 0)
 549             c++;
 550
 551         if (c->name == NULL) {
 552             snprintf(error_msg, sizeof(error_msg),
 553                      _("%s:%d: unknown command `%s'"), file, line,
 554                      argv[0]);
 555             g_ptr_array_free(args, TRUE);
 556             fclose(fp);
 557             return FALSE;
 558         }
 559
 560         if (!(c->handler(cfg, args->len, argv))) {
 561             char *ss = g_strdup(error_msg);
 562             snprintf(error_msg, sizeof(error_msg),
 563                          _("%s:%d: %s"), file, line, ss);
 564             g_free(ss);
 565             g_ptr_array_free(args, TRUE);
 566             fclose(fp);
 567             return FALSE;
 568         }
 569         g_ptr_array_free(args, TRUE);
 570     }
 571
 572     fclose(fp);
 573     return TRUE;
 574 }
 575
 576 static gboolean
 577 load_user_keymap(config_t *cfg, const char *file)
 578 {
 579     const command_t cmd[] = {
 580         {"bind", cmd_bind},
 581         {"bind-ext", cmd_bind},
 582         {"label", cmd_label},
 583         {0, 0}
 584     };
 585
 586     cfg->keymap = g_array_new(TRUE, FALSE, sizeof(edit_key_map_type));
 587     cfg->ext_keymap = g_array_new(TRUE, FALSE, sizeof(edit_key_map_type));
 588
 589     if (!parse_file(cfg, file, cmd)) {
 590         return FALSE;
 591     }
 592
 593     return TRUE;
 594 }
 595
 596 gboolean
 597 edit_load_user_map(WEdit *edit)
 598 {
 599     static config_t cfg;
 600     config_t new_cfg;
 601     char *file;
 602     struct stat s;
 603
 604     if (edit_key_emulation != EDIT_KEY_EMULATION_USER)
 605         return TRUE;
 606
 607     file = concat_dir_and_file(home_dir, MC_USERMAP);
 608
 609     if (stat(file, &s) < 0) {
 610         char *msg = g_strdup_printf(_("%s not found!"), file);
 611         edit_error_dialog(_("Error"), msg);
 612         g_free(msg);
 613         g_free(file);
 614         return FALSE;
 615     }
 616
 617     if (s.st_mtime != cfg.mtime) {
 618         memset(&new_cfg, 0, sizeof(new_cfg));
 619         new_cfg.mtime = s.st_mtime;
 620
 621         if (!load_user_keymap(&new_cfg, file)) {
 622             edit_error_dialog(_("Error"), error_msg);
 623             cfg_free_maps(&new_cfg);
 624             g_free(file);
 625             return FALSE;
 626         } else {
 627             cfg_free_maps(&cfg);
 628             cfg = new_cfg;
 629         }
 630     }
 631
 632     edit->user_map = (edit_key_map_type *) cfg.keymap->data;
 633     edit->ext_map = (edit_key_map_type *) cfg.ext_keymap->data;
 634     memcpy(edit->labels, cfg.labels, sizeof(edit->labels));
 635
 636     g_free(file);
 637
 638     return TRUE;
 639 }