diplodocus.org Git - nmh/blob - sbr/fmt_scan.c

   1
   2 /*
   3  * fmt_scan.c -- format string interpretation
   4  *
   5  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   6  * COPYRIGHT file in the root directory of the nmh distribution for
   7  * complete copyright information.
   8  */
   9
  10 #include <h/mh.h>
  11 #include <h/addrsbr.h>
  12 #include <h/fmt_scan.h>
  13 #include <h/tws.h>
  14 #include <h/fmt_compile.h>
  15
  16 #ifdef TIME_WITH_SYS_TIME
  17 # include <sys/time.h>
  18 # include <time.h>
  19 #else
  20 # ifdef TM_IN_SYS_TIME
  21 #  include <sys/time.h>
  22 # else
  23 #  include <time.h>
  24 # endif
  25 #endif
  26 #ifdef MULTIBYTE_SUPPORT
  27 #  include <wctype.h>
  28 #  include <wchar.h>
  29 #endif
  30
  31 #define NFMTS MAXARGS
  32
  33 extern char *formataddr ();     /* hook for custom address formatting */
  34
  35 #ifdef LBL
  36 struct msgs *fmt_current_folder; /* current folder (set by main program) */
  37 #endif
  38
  39 extern int fmt_norm;            /* defined in sbr/fmt_def.c = AD_NAME */
  40 struct mailname fmt_mnull;
  41
  42 /*
  43  * static prototypes
  44  */
  45 static int match (char *, char *);
  46 static char *get_x400_friendly (char *, char *, int);
  47 static int get_x400_comp (char *, char *, char *, int);
  48
  49
  50 /*
  51  * test if string "sub" appears anywhere in
  52  * string "str" (case insensitive).
  53  */
  54
  55 static int
  56 match (char *str, char *sub)
  57 {
  58     int c1, c2;
  59     char *s1, *s2;
  60
  61 #ifdef LOCALE
  62     while ((c1 = *sub)) {
  63         c1 = (isalpha(c1) && isupper(c1)) ? tolower(c1) : c1;
  64         while ((c2 = *str++) && c1 != ((isalpha(c2) && isupper(c2)) ? tolower(c2) : c2))
  65             ;
  66         if (! c2)
  67             return 0;
  68         s1 = sub + 1; s2 = str;
  69         while ((c1 = *s1++) && ((isalpha(c1) && isupper(c1)) ? tolower(c1) : c1) == ((isalpha(c2 =*s2++) && isupper(c2)) ? tolower(c2) : c2))
  70             ;
  71         if (! c1)
  72             return 1;
  73     }
  74 #else
  75     while ((c1 = *sub)) {
  76         while ((c2 = *str++) && (c1 | 040) != (c2 | 040))
  77             ;
  78         if (! c2)
  79             return 0;
  80         s1 = sub + 1; s2 = str;
  81         while ((c1 = *s1++) && (c1 | 040) == (*s2++ | 040))
  82             ;
  83         if (! c1)
  84             return 1;
  85     }
  86 #endif
  87     return 1;
  88 }
  89
  90 /*
  91  * copy a number to the destination subject to a maximum width
  92  */
  93 static void
  94 cpnumber(char **dest, int num, unsigned int wid, char fill, size_t n) {
  95     int i, c;
  96     char *sp;
  97     char *cp = *dest;
  98     char *ep = cp + n;
  99
 100     if (cp + wid < ep) {
 101         if ((i = (num)) < 0)
 102             i = -(num);
 103         if ((c = (wid)) < 0)
 104             c = -c;
 105         sp = cp + c;
 106         do {
 107             *--sp = (i % 10) + '0';
 108             i /= 10;
 109         } while (i > 0 && sp > cp);
 110         if (i > 0)
 111             *sp = '?';
 112         else if ((num) < 0 && sp > cp)
 113             *--sp = '-';
 114         while (sp > cp)
 115             *--sp = fill;
 116         cp += c;
 117     }
 118     *dest = cp;
 119 }
 120
 121 /*
 122  * copy string from str to dest padding with the fill character to a size
 123  * of wid characters. if wid is negative, the string is right aligned
 124  * no more than n bytes are copied
 125  */
 126 static void
 127 cptrimmed(char **dest, char *str, unsigned int wid, char fill, size_t n) {
 128     int remaining;     /* remaining output width available */
 129     int c, ljust, w;
 130     int end;           /* number of input bytes remaining in str */
 131 #ifdef MULTIBYTE_SUPPORT
 132     int char_len;      /* bytes in current character */
 133     wchar_t wide_char;
 134 #endif
 135     char *sp;          /* current position in source string */
 136     char *cp = *dest;  /* current position in destination string */
 137     char *ep = cp + n; /* end of destination buffer */
 138     int prevCtrl = 1;
 139
 140     /* get alignment */
 141     ljust = 0;
 142     if ((remaining = (wid)) < 0) {
 143         remaining = -remaining;
 144         ljust++;
 145     }
 146     if ((sp = (str))) {
 147         mbtowc(NULL, NULL, 0); /* reset shift state */
 148         end = strlen(str);
 149         while (*sp && remaining > 0 && end > 0) {
 150 #ifdef MULTIBYTE_SUPPORT
 151             char_len = mbtowc(&wide_char, sp, end);
 152             if (char_len <= 0 || (cp + char_len > ep))
 153                 break;
 154
 155             end -= char_len;
 156
 157             if (iswcntrl(wide_char) || iswspace(wide_char)) {
 158                 sp += char_len;
 159 #else
 160             end--;
 161             if (iscntrl(*sp) || isspace(*sp)) {
 162                 sp++;
 163 #endif
 164                 if (!prevCtrl) {
 165                     *cp++ = ' ';
 166                     remaining--;
 167                 }
 168
 169                 prevCtrl = 1;
 170                 continue;
 171             }
 172             prevCtrl = 0;
 173
 174 #ifdef MULTIBYTE_SUPPORT
 175             w = wcwidth(wide_char);
 176             if (w >= 0 && remaining >= w) {
 177                 strncpy(cp, sp, char_len);
 178                 cp += char_len;
 179                 remaining -= w;
 180             }
 181             sp += char_len;
 182 #else
 183             *cp++ = *sp++;
 184             remaining--;
 185 #endif
 186         }
 187     }
 188
 189     if (ljust) {
 190         if (cp + remaining > ep)
 191             remaining = ep - cp;
 192         ep = cp + remaining;
 193         if (remaining > 0) {
 194             /* copy string to the right */
 195             while (--cp >= *dest)
 196                 *(cp + remaining) = *cp;
 197             /* add padding at the beginning */
 198             cp += remaining;
 199             for (c=remaining; c>0; c--)
 200                 *cp-- = fill;
 201         }
 202         *dest = ep;
 203     } else {
 204         /* pad remaining space */
 205         while (remaining-- > 0 && cp < ep)
 206                 *cp++ = fill;
 207         *dest = cp;
 208     }
 209 }
 210
 211 static void
 212 cpstripped (char **start, char *end, char *str)
 213 {
 214     int c;
 215     char *s = str;
 216
 217     if (!s)
 218         return;
 219
 220     /* skip any initial control characters or spaces */
 221     while ((c = (unsigned char) *s) &&
 222 #ifdef LOCALE
 223             (iscntrl(c) || isspace(c)))
 224 #else
 225             (c <= 32))
 226 #endif
 227         s++;
 228
 229     /* compact repeated control characters and spaces into a single space */
 230     while((c = (unsigned char) *s++) && *start < end)
 231         if (!iscntrl(c) && !isspace(c))
 232             *(*start)++ = c;
 233         else {
 234             while ((c = (unsigned char) *s) &&
 235 #ifdef LOCALE
 236                     (iscntrl(c) || isspace(c)))
 237 #else
 238                     (c <= 32))
 239 #endif
 240                 s++;
 241             *(*start)++ = ' ';
 242         }
 243 }
 244
 245 static char *lmonth[] = { "January",  "February","March",   "April",
 246                           "May",      "June",    "July",    "August",
 247                           "September","October", "November","December" };
 248
 249 static char *
 250 get_x400_friendly (char *mbox, char *buffer, int buffer_len)
 251 {
 252     char given[BUFSIZ], surname[BUFSIZ];
 253
 254     if (mbox == NULL)
 255         return NULL;
 256     if (*mbox == '"')
 257         mbox++;
 258     if (*mbox != '/')
 259         return NULL;
 260
 261     if (get_x400_comp (mbox, "/PN=", buffer, buffer_len)) {
 262         for (mbox = buffer; (mbox = strchr(mbox, '.')); )
 263             *mbox++ = ' ';
 264
 265         return buffer;
 266     }
 267
 268     if (!get_x400_comp (mbox, "/S=", surname, sizeof(surname)))
 269         return NULL;
 270
 271     if (get_x400_comp (mbox, "/G=", given, sizeof(given)))
 272         snprintf (buffer, buffer_len, "%s %s", given, surname);
 273     else
 274         snprintf (buffer, buffer_len, "%s", surname);
 275
 276     return buffer;
 277 }
 278
 279 static int
 280 get_x400_comp (char *mbox, char *key, char *buffer, int buffer_len)
 281 {
 282     int idx;
 283     char *cp;
 284
 285     if ((idx = stringdex (key, mbox)) < 0
 286             || !(cp = strchr(mbox += idx + strlen (key), '/')))
 287         return 0;
 288
 289     snprintf (buffer, buffer_len, "%*.*s", (int)(cp - mbox), (int)(cp - mbox), mbox);
 290     return 1;
 291 }
 292
 293 struct format *
 294 fmt_scan (struct format *format, char *scanl, int width, int *dat)
 295 {
 296     char *cp, *ep;
 297     unsigned char *sp;
 298     char *savestr = NULL;
 299     unsigned char *str = NULL;
 300     char buffer[BUFSIZ], buffer2[BUFSIZ];
 301     int i, c, ljust, n;
 302     int value = 0;
 303     time_t t;
 304     struct format *fmt;
 305     struct comp *comp;
 306     struct tws *tws;
 307     struct mailname *mn;
 308
 309     cp = scanl;
 310     ep = scanl + width - 1;
 311
 312     for (fmt = format; fmt->f_type != FT_DONE; fmt++)
 313         switch (fmt->f_type) {
 314         case FT_PARSEADDR:
 315         case FT_PARSEDATE:
 316             fmt->f_comp->c_flags &= ~CF_PARSED;
 317             break;
 318         }
 319
 320     fmt = format;
 321
 322     while (cp < ep) {
 323         switch (fmt->f_type) {
 324
 325         case FT_COMP:
 326             cpstripped (&cp, ep, fmt->f_comp->c_text);
 327             break;
 328         case FT_COMPF:
 329             cptrimmed (&cp, fmt->f_comp->c_text, fmt->f_width, fmt->f_fill, ep - cp);
 330             break;
 331
 332         case FT_LIT:
 333             sp = fmt->f_text;
 334             while( (c = *sp++) && cp < ep)
 335                 *cp++ = c;
 336             break;
 337         case FT_LITF:
 338             sp = fmt->f_text;
 339             ljust = 0;
 340             i = fmt->f_width;
 341             if (i < 0) {
 342                 i = -i;
 343                 ljust++;                /* XXX should do something with this */
 344             }
 345             while( (c = *sp++) && --i >= 0 && cp < ep)
 346                 *cp++ = c;
 347             while( --i >= 0 && cp < ep)
 348                 *cp++ = fmt->f_fill;
 349             break;
 350
 351         case FT_STR:
 352             cpstripped (&cp, ep, str);
 353             break;
 354         case FT_STRF:
 355             cptrimmed (&cp, str, fmt->f_width, fmt->f_fill, ep - cp);
 356             break;
 357         case FT_STRFW:
 358             adios (NULL, "internal error (FT_STRFW)");
 359
 360         case FT_NUM:
 361             n = snprintf(cp, ep - cp + 1, "%d", value);
 362             if (n >= 0) {
 363                 if (n >= ep - cp) {
 364                     cp = ep;
 365                 } else
 366                     cp += n;
 367             }
 368             break;
 369         case FT_NUMF:
 370             cpnumber (&cp, value, fmt->f_width, fmt->f_fill, ep - cp);
 371             break;
 372
 373         case FT_CHAR:
 374             *cp++ = fmt->f_char;
 375             break;
 376
 377         case FT_DONE:
 378             goto finished;
 379
 380         case FT_IF_S:
 381             if (!(value = (str && *str))) {
 382                 fmt += fmt->f_skip;
 383                 continue;
 384             }
 385             break;
 386
 387         case FT_IF_S_NULL:
 388             if (!(value = (str == NULL || *str == 0))) {
 389                 fmt += fmt->f_skip;
 390                 continue;
 391             }
 392             break;
 393
 394         case FT_IF_V_EQ:
 395             if (value != fmt->f_value) {
 396                 fmt += fmt->f_skip;
 397                 continue;
 398             }
 399             break;
 400
 401         case FT_IF_V_NE:
 402             if (value == fmt->f_value) {
 403                 fmt += fmt->f_skip;
 404                 continue;
 405             }
 406             break;
 407
 408         case FT_IF_V_GT:
 409             if (value <= fmt->f_value) {
 410                 fmt += fmt->f_skip;
 411                 continue;
 412             }
 413             break;
 414
 415         case FT_IF_MATCH:
 416             if (!(value = (str && match (str, fmt->f_text)))) {
 417                 fmt += fmt->f_skip;
 418                 continue;
 419             }
 420             break;
 421
 422         case FT_V_MATCH:
 423             if (str)
 424                 value = match (str, fmt->f_text);
 425             else
 426                 value = 0;
 427             break;
 428
 429         case FT_IF_AMATCH:
 430             if (!(value = (str && uprf (str, fmt->f_text)))) {
 431                 fmt += fmt->f_skip;
 432                 continue;
 433             }
 434             break;
 435
 436         case FT_V_AMATCH:
 437             value = uprf (str, fmt->f_text);
 438             break;
 439
 440         case FT_S_NONNULL:
 441             value = (str != NULL && *str != 0);
 442             break;
 443
 444         case FT_S_NULL:
 445             value = (str == NULL || *str == 0);
 446             break;
 447
 448         case FT_V_EQ:
 449             value = (fmt->f_value == value);
 450             break;
 451
 452         case FT_V_NE:
 453             value = (fmt->f_value != value);
 454             break;
 455
 456         case FT_V_GT:
 457             value = (fmt->f_value > value);
 458             break;
 459
 460         case FT_GOTO:
 461             fmt += fmt->f_skip;
 462             continue;
 463
 464         case FT_NOP:
 465             break;
 466
 467         case FT_LS_COMP:
 468             str = fmt->f_comp->c_text;
 469             break;
 470         case FT_LS_LIT:
 471             str = fmt->f_text;
 472             break;
 473         case FT_LS_GETENV:
 474             if (!(str = getenv (fmt->f_text)))
 475                 str = "";
 476             break;
 477         case FT_LS_CFIND:
 478             if (!(str = context_find (fmt->f_text)))
 479                 str = "";
 480             break;
 481
 482         case FT_LS_DECODECOMP:
 483             if (decode_rfc2047(fmt->f_comp->c_text, buffer2, sizeof(buffer2)))
 484                 str = buffer2;
 485             else
 486                 str = fmt->f_comp->c_text;
 487             break;
 488
 489         case FT_LS_DECODE:
 490             if (str && decode_rfc2047(str, buffer2, sizeof(buffer2)))
 491                 str = buffer2;
 492             break;
 493
 494         case FT_LS_TRIM:
 495             if (str) {
 496                     unsigned char *xp;
 497
 498                     strncpy(buffer, str, sizeof(buffer));
 499                     buffer[sizeof(buffer)-1] = '\0';
 500                     str = buffer;
 501                     while (isspace(*str))
 502                             str++;
 503                     ljust = 0;
 504                     if ((i = fmt->f_width) < 0) {
 505                             i = -i;
 506                             ljust++;
 507                     }
 508
 509                     if (!ljust && i > 0 && strlen(str) > i)
 510                             str[i] = '\0';
 511                     xp = str;
 512                     xp += strlen(str) - 1;
 513                     while (xp > str && isspace(*xp))
 514                             *xp-- = '\0';
 515                     if (ljust && i > 0 && strlen(str) > i)
 516                         str += strlen(str) - i;
 517             }
 518             break;
 519
 520         case FT_LV_COMPFLAG:
 521             value = (fmt->f_comp->c_flags & CF_TRUE) != 0;
 522             break;
 523         case FT_LV_COMP:
 524             value = (comp = fmt->f_comp)->c_text ? atoi(comp->c_text) : 0;
 525             break;
 526         case FT_LV_LIT:
 527             value = fmt->f_value;
 528             break;
 529         case FT_LV_DAT:
 530             value = dat[fmt->f_value];
 531             break;
 532         case FT_LV_STRLEN:
 533             if (str != NULL)
 534                     value = strlen(str);
 535             else
 536                     value = 0;
 537             break;
 538         case FT_LV_CHAR_LEFT:
 539             value = width - (cp - scanl);
 540             break;
 541         case FT_LV_PLUS_L:
 542             value += fmt->f_value;
 543             break;
 544         case FT_LV_MINUS_L:
 545             value = fmt->f_value - value;
 546             break;
 547         case FT_LV_DIVIDE_L:
 548             if (fmt->f_value)
 549                 value = value / fmt->f_value;
 550             else
 551                 value = 0;
 552             break;
 553         case FT_LV_MODULO_L:
 554             if (fmt->f_value)
 555                 value = value % fmt->f_value;
 556             else
 557                 value = 0;
 558             break;
 559         case FT_SAVESTR:
 560             savestr = str;
 561             break;
 562
 563         case FT_LV_SEC:
 564             value = fmt->f_comp->c_tws->tw_sec;
 565             break;
 566         case FT_LV_MIN:
 567             value = fmt->f_comp->c_tws->tw_min;
 568             break;
 569         case FT_LV_HOUR:
 570             value = fmt->f_comp->c_tws->tw_hour;
 571             break;
 572         case FT_LV_MDAY:
 573             value = fmt->f_comp->c_tws->tw_mday;
 574             break;
 575         case FT_LV_MON:
 576             value = fmt->f_comp->c_tws->tw_mon + 1;
 577             break;
 578         case FT_LS_MONTH:
 579             str = tw_moty[fmt->f_comp->c_tws->tw_mon];
 580             break;
 581         case FT_LS_LMONTH:
 582             str = lmonth[fmt->f_comp->c_tws->tw_mon];
 583             break;
 584         case FT_LS_ZONE:
 585             str = dtwszone (fmt->f_comp->c_tws);
 586             break;
 587         case FT_LV_YEAR:
 588             value = fmt->f_comp->c_tws->tw_year;
 589             break;
 590         case FT_LV_WDAY:
 591             if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
 592                 set_dotw (tws);
 593             value = tws->tw_wday;
 594             break;
 595         case FT_LS_DAY:
 596             if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
 597                 set_dotw (tws);
 598             str = tw_dotw[tws->tw_wday];
 599             break;
 600         case FT_LS_WEEKDAY:
 601             if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
 602                 set_dotw (tws);
 603             str = tw_ldotw[tws->tw_wday];
 604             break;
 605         case FT_LV_YDAY:
 606             value = fmt->f_comp->c_tws->tw_yday;
 607             break;
 608         case FT_LV_ZONE:
 609             value = fmt->f_comp->c_tws->tw_zone;
 610             break;
 611         case FT_LV_CLOCK:
 612             if ((value = fmt->f_comp->c_tws->tw_clock) == 0)
 613                 value = dmktime(fmt->f_comp->c_tws);
 614             break;
 615         case FT_LV_RCLOCK:
 616             if ((value = fmt->f_comp->c_tws->tw_clock) == 0)
 617                 value = dmktime(fmt->f_comp->c_tws);
 618             value = time((time_t *) 0) - value;
 619             break;
 620         case FT_LV_DAYF:
 621             if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
 622                 set_dotw (tws);
 623             switch (fmt->f_comp->c_tws->tw_flags & TW_SDAY) {
 624                 case TW_SEXP:
 625                     value = 1; break;
 626                 case TW_SIMP:
 627                     value = 0; break;
 628                 default:
 629                     value = -1; break;
 630             }
 631         case FT_LV_ZONEF:
 632             if ((fmt->f_comp->c_tws->tw_flags & TW_SZONE) == TW_SZEXP)
 633                     value = 1;
 634             else
 635                     value = -1;
 636             break;
 637         case FT_LV_DST:
 638             value = fmt->f_comp->c_tws->tw_flags & TW_DST;
 639             break;
 640         case FT_LS_822DATE:
 641             str = dasctime (fmt->f_comp->c_tws , TW_ZONE);
 642             break;
 643         case FT_LS_PRETTY:
 644             str = dasctime (fmt->f_comp->c_tws, TW_NULL);
 645             break;
 646
 647         case FT_LS_PERS:
 648             str = fmt->f_comp->c_mn->m_pers;
 649             break;
 650         case FT_LS_MBOX:
 651             str = fmt->f_comp->c_mn->m_mbox;
 652             break;
 653         case FT_LS_HOST:
 654             str = fmt->f_comp->c_mn->m_host;
 655             break;
 656         case FT_LS_PATH:
 657             str = fmt->f_comp->c_mn->m_path;
 658             break;
 659         case FT_LS_GNAME:
 660             str = fmt->f_comp->c_mn->m_gname;
 661             break;
 662         case FT_LS_NOTE:
 663             str = fmt->f_comp->c_mn->m_note;
 664             break;
 665         case FT_LS_822ADDR:
 666             str = adrformat( fmt->f_comp->c_mn );
 667             break;
 668         case FT_LV_HOSTTYPE:
 669             value = fmt->f_comp->c_mn->m_type;
 670             break;
 671         case FT_LV_INGRPF:
 672             value = fmt->f_comp->c_mn->m_ingrp;
 673             break;
 674         case FT_LV_NOHOSTF:
 675             value = fmt->f_comp->c_mn->m_nohost;
 676             break;
 677         case FT_LS_ADDR:
 678         case FT_LS_FRIENDLY:
 679             if ((mn = fmt->f_comp->c_mn) == &fmt_mnull) {
 680                 str = fmt->f_comp->c_text;
 681                 break;
 682             }
 683             if (fmt->f_type == FT_LS_ADDR)
 684                 goto unfriendly;
 685             if ((str = mn->m_pers) == NULL) {
 686                 if ((str = mn->m_note)) {
 687                     strncpy (buffer, str, sizeof(buffer));
 688                     buffer[sizeof(buffer)-1] = '\0';
 689                     str = buffer;
 690                     if (*str == '(')
 691                         str++;
 692                     sp = str + strlen(str) - 1;
 693                     if (*sp == ')') {
 694                         *sp-- = '\0';
 695                         while (sp >= str)
 696                             if (*sp == ' ')
 697                                 *sp-- = '\0';
 698                             else
 699                                 break;
 700                     }
 701                 } else if (!(str = get_x400_friendly (mn->m_mbox,
 702                                 buffer, sizeof(buffer)))) {
 703         unfriendly: ;
 704                   switch (mn->m_type) {
 705                     case LOCALHOST:
 706                         str = mn->m_mbox;
 707                         break;
 708                     case UUCPHOST:
 709                         snprintf (buffer, sizeof(buffer), "%s!%s",
 710                                 mn->m_host, mn->m_mbox);
 711                         str = buffer;
 712                         break;
 713                     default:
 714                         if (mn->m_mbox) {
 715                             snprintf (buffer, sizeof(buffer), "%s@%s",
 716                                 mn->m_mbox, mn->m_host);
 717                             str= buffer;
 718                         }
 719                         else
 720                             str = mn->m_text;
 721                         break;
 722                   }
 723                 }
 724             }
 725             break;
 726
 727
 728                 /* UNQUOTEs RFC-2822 quoted-string and quoted-pair */
 729         case FT_LS_UNQUOTE:
 730             if (str) {
 731                 int m;
 732                 strncpy(buffer, str, sizeof(buffer));
 733                 /* strncpy doesn't NUL-terminate if it fills the buffer */
 734                 buffer[sizeof(buffer)-1] = '\0';
 735                 str = buffer;
 736
 737                 /* we will parse from buffer to buffer2 */
 738                 n = 0; /* n is the input position in str */
 739                 m = 0; /* m is the ouput position in buffer2 */
 740
 741                 while ( str[n] != '\0') {
 742                     switch ( str[n] ) {
 743                         case '\\':
 744                             n++;
 745                             if ( str[n] != '\0')
 746                                 buffer2[m++] = str[n++];
 747                             break;
 748                         case '"':
 749                             n++;
 750                             break;
 751                         default:
 752                             buffer2[m++] = str[n++];
 753                             break;
 754                         }
 755                 }
 756                 buffer2[m] = '\0';
 757                 str = buffer2;
 758             }
 759             break;
 760
 761         case FT_LOCALDATE:
 762             comp = fmt->f_comp;
 763             if ((t = comp->c_tws->tw_clock) == 0)
 764                 t = dmktime(comp->c_tws);
 765             tws = dlocaltime(&t);
 766             *comp->c_tws = *tws;
 767             break;
 768
 769         case FT_GMTDATE:
 770             comp = fmt->f_comp;
 771             if ((t = comp->c_tws->tw_clock) == 0)
 772                 t = dmktime(comp->c_tws);
 773             tws = dgmtime(&t);
 774             *comp->c_tws = *tws;
 775             break;
 776
 777         case FT_PARSEDATE:
 778             comp = fmt->f_comp;
 779             if (comp->c_flags & CF_PARSED)
 780                 break;
 781             if ((sp = comp->c_text) && (tws = dparsetime(sp))) {
 782                 *comp->c_tws = *tws;
 783                 comp->c_flags &= ~CF_TRUE;
 784             } else if ((comp->c_flags & CF_DATEFAB) == 0) {
 785                 memset ((char *) comp->c_tws, 0, sizeof *comp->c_tws);
 786                 comp->c_flags = CF_TRUE;
 787             }
 788             comp->c_flags |= CF_PARSED;
 789             break;
 790
 791         case FT_FORMATADDR:
 792             /* hook for custom address list formatting (see replsbr.c) */
 793             str = formataddr (savestr, str);
 794             break;
 795
 796         case FT_PUTADDR:
 797             /* output the str register as an address component,
 798              * splitting it into multiple lines if necessary.  The
 799              * value reg. contains the max line length.  The lit.
 800              * field may contain a string to prepend to the result
 801              * (e.g., "To: ")
 802              */
 803             {
 804             unsigned char *lp;
 805             char *lastb;
 806             int indent, wid, len;
 807
 808             lp = str;
 809             wid = value;
 810             len = strlen (str);
 811             sp = fmt->f_text;
 812             indent = strlen (sp);
 813             wid -= indent;
 814             while( (c = *sp++) && cp < ep)
 815                 *cp++ = c;
 816             while (len > wid) {
 817                 /* try to break at a comma; failing that, break at a
 818                  * space.
 819                  */
 820                 lastb = 0; sp = lp + wid;
 821                 while (sp > lp && (c = *--sp) != ',') {
 822                     if (! lastb && isspace(c))
 823                         lastb = sp - 1;
 824                 }
 825                 if (sp == lp) {
 826                     if (! (sp = lastb)) {
 827                         sp = lp + wid - 1;
 828                         while (*sp && *sp != ',' && !isspace(*sp))
 829                             sp++;
 830                         if (*sp != ',')
 831                             sp--;
 832                     }
 833                 }
 834                 len -= sp - lp + 1;
 835                 while (cp < ep && lp <= sp)
 836                     *cp++ = *lp++;
 837                 while (isspace(*lp))
 838                     lp++, len--;
 839                 if (*lp) {
 840                     if (cp < ep)
 841                         *cp++ = '\n';
 842                     for (i=indent; cp < ep && i > 0; i--)
 843                         *cp++ = ' ';
 844                 }
 845             }
 846             cpstripped (&cp, ep, lp);
 847             }
 848             break;
 849
 850         case FT_PARSEADDR:
 851             comp = fmt->f_comp;
 852             if (comp->c_flags & CF_PARSED)
 853                 break;
 854             if (comp->c_mn != &fmt_mnull)
 855                 mnfree (comp->c_mn);
 856             if ((sp = comp->c_text) && (sp = getname(sp)) &&
 857                 (mn = getm (sp, NULL, 0, fmt_norm, NULL))) {
 858                 comp->c_mn = mn;
 859                 while (getname(""))
 860                     ;
 861                 comp->c_flags |= CF_PARSED;
 862             } else {
 863                 while (getname(""))             /* XXX */
 864                     ;
 865                 comp->c_mn = &fmt_mnull;
 866             }
 867             break;
 868
 869         case FT_MYMBOX:
 870             /*
 871              * if there's no component, we say true.  Otherwise we
 872              * say "true" only if we can parse the address and it
 873              * matches one of our addresses.
 874              */
 875             comp = fmt->f_comp;
 876             if (comp->c_mn != &fmt_mnull)
 877                 mnfree (comp->c_mn);
 878             if ((sp = comp->c_text) && (sp = getname(sp)) &&
 879                 (mn = getm (sp, NULL, 0, AD_NAME, NULL))) {
 880                 comp->c_mn = mn;
 881                 if (ismymbox(mn))
 882                     comp->c_flags |= CF_TRUE;
 883                 else
 884                     comp->c_flags &= ~CF_TRUE;
 885                 while ((sp = getname(sp)))
 886                     if ((comp->c_flags & CF_TRUE) == 0 &&
 887                         (mn = getm (sp, NULL, 0, AD_NAME, NULL)))
 888                         if (ismymbox(mn))
 889                             comp->c_flags |= CF_TRUE;
 890             } else {
 891                 while (getname(""))             /* XXX */
 892                     ;
 893                 if (comp->c_text == 0)
 894                     comp->c_flags |= CF_TRUE;
 895                 else
 896                     comp->c_flags &= ~CF_TRUE;
 897                 comp->c_mn = &fmt_mnull;
 898             }
 899             break;
 900
 901         case FT_ADDTOSEQ:
 902 #ifdef LBL
 903             /* If we're working on a folder (as opposed to a file), add the
 904              * current msg to sequence given in literal field.  Don't
 905              * disturb string or value registers.
 906              */
 907             if (fmt_current_folder)
 908                     seq_addmsg(fmt_current_folder, fmt->f_text, dat[0], -1);
 909 #endif
 910             break;
 911         }
 912         fmt++;
 913     }
 914 #ifndef JLR
 915     finished:;
 916     if (cp[-1] != '\n')
 917         *cp++ = '\n';
 918     *cp   = 0;
 919     return ((struct format *)0);
 920 #else /* JLR */
 921     if (cp[-1] != '\n')
 922         *cp++ = '\n';
 923     while (fmt->f_type != FT_DONE)
 924         fmt++;
 925
 926     finished:;
 927     *cp = '\0';
 928     return (fmt->f_value ? ++fmt : (struct format *) 0);
 929
 930 #endif /* JLR */
 931 }