src/quote_fmt_parse.y

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2002 Hiroyuki Yamamoto and the Sylpheed-Claws Team
   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 02111-1307, USA.
  18  */
  19
  20 %{
  21
  22 #include "defs.h"
  23
  24 #include <glib.h>
  25 #include <ctype.h>
  26
  27 #include "procmsg.h"
  28 #include "procmime.h"
  29 #include "utils.h"
  30 #include "procheader.h"
  31
  32 #include "quote_fmt.h"
  33 #include "quote_fmt_lex.h"
  34
  35 /* decl */
  36 /*
  37 flex quote_fmt.l
  38 bison -p quote_fmt quote_fmt.y
  39 */
  40
  41 int yylex(void);
  42
  43 static MsgInfo *msginfo = NULL;
  44 static gboolean *visible = NULL;
  45 static gint maxsize = 0;
  46 static gint stacksize = 0;
  47
  48 static gchar *buffer = NULL;
  49 static gint bufmax = 0;
  50 static gint bufsize = 0;
  51 static const gchar *quote_str = NULL;
  52 static const gchar *body = NULL;
  53 static gint error = 0;
  54
  55 static gint cursor_pos  = 0;
  56
  57 static void add_visibility(gboolean val)
  58 {
  59         stacksize++;
  60         if (maxsize < stacksize) {
  61                 maxsize += 128;
  62                 visible = g_realloc(visible, maxsize * sizeof(gboolean));
  63                 if (visible == NULL)
  64                         maxsize = 0;
  65         }
  66
  67         visible[stacksize - 1] = val;
  68 }
  69
  70 static void remove_visibility(void)
  71 {
  72         stacksize--;
  73 }
  74
  75 static void add_buffer(const gchar *s)
  76 {
  77         gint len;
  78
  79         len = strlen(s);
  80         if (bufsize + len + 1 > bufmax) {
  81                 if (bufmax == 0)
  82                         bufmax = 128;
  83                 while (bufsize + len + 1 > bufmax)
  84                         bufmax *= 2;
  85                 buffer = g_realloc(buffer, bufmax);
  86         }
  87         strcpy(buffer + bufsize, s);
  88         bufsize += len;
  89 }
  90
  91 gchar *quote_fmt_get_buffer(void)
  92 {
  93         if (error != 0)
  94                 return NULL;
  95         else
  96                 return buffer;
  97 }
  98
  99 gint quote_fmt_get_cursor_pos(void)
 100 {
 101         return cursor_pos;
 102 }
 103
 104 #define INSERT(buf) \
 105         if (stacksize != 0 && visible[stacksize - 1]) \
 106                 add_buffer(buf)
 107
 108 #define INSERT_CHARACTER(chr) \
 109         if (stacksize != 0 && visible[stacksize - 1]) { \
 110                 gchar tmp[2]; \
 111                 tmp[0] = (chr); \
 112                 tmp[1] = '\0'; \
 113                 add_buffer(tmp); \
 114         }
 115
 116 void quote_fmt_init(MsgInfo *info, const gchar *my_quote_str,
 117                     const gchar *my_body)
 118 {
 119         quote_str = my_quote_str;
 120         body = my_body;
 121         msginfo = info;
 122         stacksize = 0;
 123         add_visibility(TRUE);
 124         if (buffer != NULL)
 125                 *buffer = 0;
 126         bufsize = 0;
 127         error = 0;
 128         cursor_pos = 0;
 129 }
 130
 131 void quote_fmterror(char *str)
 132 {
 133         g_warning("Error: %s\n", str);
 134         error = 1;
 135 }
 136
 137 int quote_fmtwrap(void)
 138 {
 139         return 1;
 140 }
 141
 142 static int isseparator(int ch)
 143 {
 144         return isspace(ch) || ch == '.' || ch == '-';
 145 }
 146 %}
 147
 148 %union {
 149         char chr;
 150         char str[256];
 151 }
 152
 153 %token SHOW_NEWSGROUPS
 154 %token SHOW_DATE SHOW_FROM SHOW_FULLNAME SHOW_FIRST_NAME SHOW_LAST_NAME
 155 %token SHOW_SENDER_INITIAL SHOW_SUBJECT SHOW_TO SHOW_MESSAGEID
 156 %token SHOW_PERCENT SHOW_CC SHOW_REFERENCES SHOW_MESSAGE
 157 %token SHOW_QUOTED_MESSAGE SHOW_BACKSLASH SHOW_TAB
 158 %token SHOW_QUOTED_MESSAGE_NO_SIGNATURE SHOW_MESSAGE_NO_SIGNATURE
 159 %token SHOW_EOL SHOW_QUESTION_MARK SHOW_PIPE SHOW_OPARENT SHOW_CPARENT
 160 %token QUERY_DATE QUERY_FROM
 161 %token QUERY_FULLNAME QUERY_SUBJECT QUERY_TO QUERY_NEWSGROUPS
 162 %token QUERY_MESSAGEID QUERY_CC QUERY_REFERENCES
 163 %token INSERT_FILE INSERT_PROGRAMOUTPUT
 164 %token OPARENT CPARENT
 165 %token CHARACTER
 166 %token SHOW_DATE_EXPR
 167 %token SET_CURSOR_POS
 168
 169 %start quote_fmt
 170
 171 %token <chr> CHARACTER
 172 %type <chr> character
 173 %type <str> string
 174
 175 %%
 176
 177 quote_fmt:
 178         character_or_special_or_insert_or_query_list;
 179
 180 character_or_special_or_insert_or_query_list:
 181         character_or_special_or_insert_or_query character_or_special_or_insert_or_query_list
 182         | character_or_special_or_insert_or_query ;
 183
 184 character_or_special_or_insert_or_query:
 185         special
 186         | character
 187         {
 188                 INSERT_CHARACTER($1);
 189         }
 190         | query
 191         | insert ;
 192
 193 character:
 194         CHARACTER
 195         ;
 196
 197 string:
 198         CHARACTER
 199         {
 200                 $$[0] = $1;
 201                 $$[1] = '\0';
 202         }
 203         | string CHARACTER
 204         {
 205                 strcpy($$, $1);
 206                 $$[strlen($$) + 1] = '\0';
 207                 $$[strlen($$)] = $2;
 208         };
 209
 210 special:
 211         SHOW_NEWSGROUPS
 212         {
 213                 if (msginfo->newsgroups)
 214                         INSERT(msginfo->newsgroups);
 215         }
 216         | SHOW_DATE_EXPR OPARENT string CPARENT
 217         {
 218                 /*
 219                  * ALF - GNU C's strftime() has a nice format specifier
 220                  * for time zone offset (%z). Non-standard however, so
 221                  * emulate it.
 222                  */
 223                 if (msginfo->date) {
 224                         char  result[100];
 225                         char *rptr;
 226                         char  zone[6];
 227                         struct tm lt;
 228                         const char *fptr;
 229                         const char *zptr;
 230
 231 #define RLEFT (sizeof result) - (rptr - result)
 232 #define STR_SIZE(x) (sizeof (x) - 1)
 233
 234                         zone[0] = 0;
 235
 236                         if (procheader_date_parse_to_tm(msginfo->date, &lt, zone)) {
 237                                 /*
 238                                  * break up format string in tiny bits delimited by valid %z's and
 239                                  * feed it to strftime(). don't forget that '%%z' mean literal '%z'.
 240                                  */
 241                                 for (rptr = result, fptr = $3; fptr && *fptr && rptr < &result[sizeof result - 1];) {
 242                                         int         perc;
 243                                         const char *p;
 244                                         char       *tmp;
 245
 246                                         if (NULL != (zptr = strstr(fptr, "%z"))) {
 247                                                 /*
 248                                                  * count nr. of prepended percent chars
 249                                                  */
 250                                                 for (perc = 0, p = zptr; p && p >= $3 && *p == '%'; p--, perc++)
 251                                                         ;
 252                                                 /*
 253                                                  * feed to strftime()
 254                                                  */
 255                                                 tmp = g_strndup(fptr, zptr - fptr + (perc % 2 ? 0 : STR_SIZE("%z")));
 256                                                 if (tmp) {
 257                                                         rptr += strftime(rptr, RLEFT, tmp, &lt);
 258                                                         g_free(tmp);
 259                                                 }
 260                                                 /*
 261                                                  * append time zone offset
 262                                                  */
 263                                                 if (zone[0] && perc % 2)
 264                                                         rptr += g_snprintf(rptr, RLEFT, "%s", zone);
 265                                                 fptr = zptr + STR_SIZE("%z");
 266                                         } else {
 267                                                 rptr += strftime(rptr, RLEFT, fptr, &lt);
 268                                                 fptr  = NULL;
 269                                         }
 270                                 }
 271
 272                                 INSERT(result);
 273                         }
 274 #undef STR_SIZE
 275 #undef RLEFT
 276                 }
 277         }
 278         | SHOW_DATE
 279         {
 280                 if (msginfo->date)
 281                         INSERT(msginfo->date);
 282         }
 283         | SHOW_FROM
 284         {
 285                 if (msginfo->from)
 286                         INSERT(msginfo->from);
 287         }
 288         | SHOW_FULLNAME
 289         {
 290                 if (msginfo->fromname)
 291                         INSERT(msginfo->fromname);
 292         }
 293         | SHOW_FIRST_NAME
 294         {
 295                 if (msginfo->fromname) {
 296                         guchar *p;
 297                         gchar *str;
 298
 299                         p = strchr(msginfo->fromname, ',');
 300                         if (p != NULL) {
 301                                 /* fromname is like "Duck, Donald" */
 302                                 p++;
 303                                 while (*p && isspace(*p)) p++;
 304                                 str = alloca(strlen(p) + 1);
 305                                 if (str != NULL) {
 306                                         strcpy(str, p);
 307                                         INSERT(str);
 308                                 }
 309                         } else {
 310                                 /* fromname is like "Donald Duck" */
 311                                 str = alloca(strlen(msginfo->fromname) + 1);
 312                                 if (str != NULL) {
 313                                         strcpy(str, msginfo->fromname);
 314                                         p = str;
 315                                         while (*p && !isspace(*p)) p++;
 316                                         *p = '\0';
 317                                         INSERT(str);
 318                                 }
 319                         }
 320                 }
 321         }
 322         | SHOW_LAST_NAME
 323         {
 324                 /* This probably won't work together very well with Middle
 325                  names and the like - thth */
 326                 if (msginfo->fromname) {
 327                         gchar *p;
 328                         gchar *str;
 329
 330                         str = alloca(strlen(msginfo->fromname) + 1);
 331                         if (str != NULL) {
 332                                 strcpy(str, msginfo->fromname);
 333                                 p = strchr(str, ',');
 334                                 if (p != NULL) {
 335                                         /* fromname is like "Duck, Donald" */
 336                                         *p = '\0';
 337                                         INSERT(str);
 338                                 } else {
 339                                         /* fromname is like "Donald Duck" */
 340                                         p = str;
 341                                         while (*p && !isspace(*p)) p++;
 342                                         if (*p) {
 343                                             /* We found a space. Get first
 344                                              none-space char and insert
 345                                              rest of string from there. */
 346                                             while (*p && isspace(*p)) p++;
 347                                             if (*p) {
 348                                                 INSERT(p);
 349                                             } else {
 350                                                 /* If there is no none-space
 351                                                  char, just insert whole
 352                                                  fromname. */
 353                                                 INSERT(str);
 354                                             }
 355                                         } else {
 356                                             /* If there is no space, just
 357                                              insert whole fromname. */
 358                                             INSERT(str);
 359                                         }
 360                                 }
 361                         }
 362                 }
 363         }
 364         | SHOW_SENDER_INITIAL
 365         {
 366 #define MAX_SENDER_INITIAL 20
 367                 if (msginfo->fromname) {
 368                         gchar tmp[MAX_SENDER_INITIAL];
 369                         guchar *p;
 370                         gchar *cur;
 371                         gint len = 0;
 372
 373                         p = msginfo->fromname;
 374                         cur = tmp;
 375                         while (*p) {
 376                                 if (*p && isalnum(*p)) {
 377                                         *cur = toupper(*p);
 378                                                 cur++;
 379                                         len++;
 380                                         if (len >= MAX_SENDER_INITIAL - 1)
 381                                                 break;
 382                                 } else
 383                                         break;
 384                                 while (*p && !isseparator(*p)) p++;
 385                                 while (*p && isseparator(*p)) p++;
 386                         }
 387                         *cur = '\0';
 388                         INSERT(tmp);
 389                 }
 390         }
 391         | SHOW_SUBJECT
 392         {
 393                 if (msginfo->subject)
 394                         INSERT(msginfo->subject);
 395         }
 396         | SHOW_TO
 397         {
 398                 if (msginfo->to)
 399                         INSERT(msginfo->to);
 400         }
 401         | SHOW_MESSAGEID
 402         {
 403                 if (msginfo->msgid)
 404                         INSERT(msginfo->msgid);
 405         }
 406         | SHOW_PERCENT
 407         {
 408                 INSERT("%");
 409         }
 410         | SHOW_CC
 411         {
 412                 if (msginfo->cc)
 413                         INSERT(msginfo->cc);
 414         }
 415         | SHOW_REFERENCES
 416         {
 417                 /* if (msginfo->references)
 418                         INSERT(msginfo->references); */
 419         }
 420         | SHOW_MESSAGE
 421         {
 422                 if (msginfo->folder || body) {
 423                         gchar buf[BUFFSIZE];
 424                         FILE *fp;
 425
 426                         if (body)
 427                                 fp = str_open_as_stream(body);
 428                         else
 429                                 fp = procmime_get_first_text_content(msginfo);
 430
 431                         if (fp == NULL)
 432                                 g_warning("Can't get text part\n");
 433                         else {
 434                                 while (fgets(buf, sizeof(buf), fp) != NULL) {
 435                                         strcrchomp(buf);
 436                                         INSERT(buf);
 437                                 }
 438                                 fclose(fp);
 439                         }
 440                 }
 441         }
 442         | SHOW_QUOTED_MESSAGE
 443         {
 444                 if (msginfo->folder || body) {
 445                         gchar buf[BUFFSIZE];
 446                         FILE *fp;
 447
 448                         if (body)
 449                                 fp = str_open_as_stream(body);
 450                         else
 451                                 fp = procmime_get_first_text_content(msginfo);
 452
 453                         if (fp == NULL)
 454                                 g_warning("Can't get text part\n");
 455                         else {
 456                                 while (fgets(buf, sizeof(buf), fp) != NULL) {
 457                                         strcrchomp(buf);
 458                                         if (quote_str)
 459                                                 INSERT(quote_str);
 460                                         INSERT(buf);
 461                                 }
 462                                 fclose(fp);
 463                         }
 464                 }
 465         }
 466         | SHOW_MESSAGE_NO_SIGNATURE
 467         {
 468                 if (msginfo->folder || body) {
 469                         gchar buf[BUFFSIZE];
 470                         FILE *fp;
 471
 472                         if (body)
 473                                 fp = str_open_as_stream(body);
 474                         else
 475                                 fp = procmime_get_first_text_content(msginfo);
 476
 477                         if (fp == NULL)
 478                                 g_warning("Can't get text part\n");
 479                         else {
 480                                 while (fgets(buf, sizeof(buf), fp) != NULL) {
 481                                         strcrchomp(buf);
 482                                         if (strncmp(buf, "-- \n", 4) == 0)
 483                                                 break;
 484                                         INSERT(buf);
 485                                 }
 486                                 fclose(fp);
 487                         }
 488                 }
 489         }
 490         | SHOW_QUOTED_MESSAGE_NO_SIGNATURE
 491         {
 492                 if (msginfo->folder || body) {
 493                         gchar buf[BUFFSIZE];
 494                         FILE *fp;
 495
 496                         if (body)
 497                                 fp = str_open_as_stream(body);
 498                         else
 499                                 fp = procmime_get_first_text_content(msginfo);
 500
 501                         if (fp == NULL)
 502                                 g_warning("Can't get text part\n");
 503                         else {
 504                                 while (fgets(buf, sizeof(buf), fp) != NULL) {
 505                                         strcrchomp(buf);
 506                                         if (strncmp(buf, "-- \n", 4) == 0)
 507                                                 break;
 508                                         if (quote_str)
 509                                                 INSERT(quote_str);
 510                                         INSERT(buf);
 511                                 }
 512                                 fclose(fp);
 513                         }
 514                 }
 515         }
 516         | SHOW_BACKSLASH
 517         {
 518                 INSERT("\\");
 519         }
 520         | SHOW_TAB
 521         {
 522                 INSERT("\t");
 523         }
 524         | SHOW_EOL
 525         {
 526                 INSERT("\n");
 527         }
 528         | SHOW_QUESTION_MARK
 529         {
 530                 INSERT("?");
 531         }
 532         | SHOW_PIPE
 533         {
 534                 INSERT("|");
 535         }
 536         | SHOW_OPARENT
 537         {
 538                 INSERT("{");
 539         }
 540         | SHOW_CPARENT
 541         {
 542                 INSERT("}");
 543         }
 544         | SET_CURSOR_POS
 545         {
 546                 cursor_pos = bufsize;
 547         };
 548
 549 query:
 550         QUERY_DATE
 551         {
 552                 add_visibility(msginfo->date != NULL);
 553         }
 554         OPARENT quote_fmt CPARENT
 555         {
 556                 remove_visibility();
 557         }
 558         | QUERY_FROM
 559         {
 560                 add_visibility(msginfo->from != NULL);
 561         }
 562         OPARENT quote_fmt CPARENT
 563         {
 564                 remove_visibility();
 565         }
 566         | QUERY_FULLNAME
 567         {
 568                 add_visibility(msginfo->fromname != NULL);
 569         }
 570         OPARENT quote_fmt CPARENT
 571         {
 572                 remove_visibility();
 573         }
 574         | QUERY_SUBJECT
 575         {
 576                 add_visibility(msginfo->subject != NULL);
 577         }
 578         OPARENT quote_fmt CPARENT
 579         {
 580                 remove_visibility();
 581         }
 582         | QUERY_TO
 583         {
 584                 add_visibility(msginfo->to != NULL);
 585         }
 586         OPARENT quote_fmt CPARENT
 587         {
 588                 remove_visibility();
 589         }
 590         | QUERY_NEWSGROUPS
 591         {
 592                 add_visibility(msginfo->newsgroups != NULL);
 593         }
 594         OPARENT quote_fmt CPARENT
 595         {
 596                 remove_visibility();
 597         }
 598         | QUERY_MESSAGEID
 599         {
 600                 add_visibility(msginfo->msgid != NULL);
 601         }
 602         OPARENT quote_fmt CPARENT
 603         {
 604                 remove_visibility();
 605         }
 606         | QUERY_CC
 607         {
 608                 add_visibility(msginfo->cc != NULL);
 609         }
 610         OPARENT quote_fmt CPARENT
 611         {
 612                 remove_visibility();
 613         }
 614         | QUERY_REFERENCES
 615         {
 616                 /* add_visibility(msginfo->references != NULL); */
 617         }
 618         OPARENT quote_fmt CPARENT
 619         {
 620                 remove_visibility();
 621         };
 622
 623 insert:
 624         INSERT_FILE OPARENT string CPARENT
 625         {
 626                 {
 627                         FILE *file;
 628                         char buffer[256];
 629
 630                         if((file = fopen($3, "rb")) != NULL) {
 631                                 while(fgets(buffer, sizeof(buffer), file)) {
 632                                         INSERT(buffer);
 633                                 }
 634                                 fclose(file);
 635                         }
 636                 }
 637         }
 638         | INSERT_PROGRAMOUTPUT OPARENT string CPARENT
 639         {
 640                 {
 641                         FILE *file;
 642                         char buffer[256];
 643
 644                         if((file = popen($3, "r")) != NULL) {
 645                                 while(fgets(buffer, sizeof(buffer), file)) {
 646                                         INSERT(buffer);
 647                                 }
 648                                 fclose(file);
 649                         }
 650                 }
 651         };