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

   1
   2 /*
   3  * fmt_scan.c -- format string interpretation
   4  *
   5  * $Id$
   6  *
   7  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   8  * COPYRIGHT file in the root directory of the nmh distribution for
   9  * complete copyright information.
  10  */
  11
  12 #include <h/mh.h>
  13 #include <h/addrsbr.h>
  14 #include <h/fmt_scan.h>
  15 #include <h/tws.h>
  16 #include <h/fmt_compile.h>
  17
  18 #ifdef TIME_WITH_SYS_TIME
  19 # include <sys/time.h>
  20 # include <time.h>
  21 #else
  22 # ifdef TM_IN_SYS_TIME
  23 #  include <sys/time.h>
  24 # else
  25 #  include <time.h>
  26 # endif
  27 #endif
  28 #ifdef MULTIBYTE_SUPPORT
  29 #  include <wctype.h>
  30 #  include <wchar.h>
  31 #endif
  32
  33 #define NFMTS MAXARGS
  34
  35 extern char *formataddr ();     /* hook for custom address formatting */
  36
  37 #ifdef LBL
  38 struct msgs *fmt_current_folder; /* current folder (set by main program) */
  39 #endif
  40
  41 extern int fmt_norm;            /* defined in sbr/fmt_def.c = AD_NAME */
  42 struct mailname fmt_mnull;
  43
  44 /*
  45  * static prototypes
  46  */
  47 static int match (char *, char *);
  48 static char *get_x400_friendly (char *, char *, int);
  49 static int get_x400_comp (char *, char *, char *, int);
  50
  51
  52 /*
  53  * test if string "sub" appears anywhere in
  54  * string "str" (case insensitive).
  55  */
  56
  57 static int
  58 match (char *str, char *sub)
  59 {
  60     int c1, c2;
  61     char *s1, *s2;
  62
  63 #ifdef LOCALE
  64     while ((c1 = *sub)) {
  65         c1 = (isalpha(c1) && isupper(c1)) ? tolower(c1) : c1;
  66         while ((c2 = *str++) && c1 != ((isalpha(c2) && isupper(c2)) ? tolower(c2) : c2))
  67             ;
  68         if (! c2)
  69             return 0;
  70         s1 = sub + 1; s2 = str;
  71         while ((c1 = *s1++) && ((isalpha(c1) && isupper(c1)) ? tolower(c1) : c1) == ((isalpha(c2 =*s2++) && isupper(c2)) ? tolower(c2) : c2))
  72             ;
  73         if (! c1)
  74             return 1;
  75     }
  76 #else
  77     while ((c1 = *sub)) {
  78         while ((c2 = *str++) && (c1 | 040) != (c2 | 040))
  79             ;
  80         if (! c2)
  81             return 0;
  82         s1 = sub + 1; s2 = str;
  83         while ((c1 = *s1++) && (c1 | 040) == (*s2++ | 040))
  84             ;
  85         if (! c1)
  86             return 1;
  87     }
  88 #endif
  89     return 1;
  90 }
  91
  92 /*
  93  * copy a number to the destination subject to a maximum width
  94  */
  95 static void
  96 cpnumber(char **dest, int num, unsigned int wid, char fill, size_t n) {
  97     int i, c;
  98     char *sp;
  99     char *cp = *dest;
 100     char *ep = cp + n;
 101
 102     if (cp + wid < ep) {
 103         if ((i = (num)) < 0)
 104             i = -(num);
 105         if ((c = (wid)) < 0)
 106             c = -c;
 107         sp = cp + c;
 108         do {
 109             *--sp = (i % 10) + '0';
 110             i /= 10;
 111         } while (i > 0 && sp > cp);
 112         if (i > 0)
 113             *sp = '?';
 114         else if ((num) < 0 && sp > cp)
 115             *--sp = '-';
 116         while (sp > cp)
 117             *--sp = fill;
 118         cp += c;
 119     }
 120     *dest = cp;
 121 }
 122
 123 /*
 124  * copy string from str to dest padding with the fill character to a size
 125  * of wid characters. if wid is negative, the string is right aligned
 126  * no more than n bytes are copied
 127  */
 128 static void
 129 cptrimmed(char **dest, char *str, unsigned int wid, char fill, size_t n) {
 130     int remaining;     /* remaining output width available */
 131     int c, ljust, w;
 132     int end;           /* number of input bytes remaining in str */
 133 #ifdef MULTIBYTE_SUPPORT
 134     int char_len;      /* bytes in current character */
 135     wchar_t wide_char;
 136 #endif
 137     char *sp;          /* current position in source string */
 138     char *cp = *dest;  /* current position in destination string */
 139     char *ep = cp + n; /* end of destination buffer */
 140     int prevCtrl = 1;
 141
 142     /* get alignment */
 143     ljust = 0;
 144     if ((remaining = (wid)) < 0) {
 145         remaining = -remaining;
 146         ljust++;
 147     }
 148     if ((sp = (str))) {
 149         mbtowc(NULL, NULL, 0); /* reset shift state */
 150         end = strlen(str);
 151         while (*sp && remaining > 0 && end > 0) {
 152 #ifdef MULTIBYTE_SUPPORT
 153             char_len = mbtowc(&wide_char, sp, end);
 154             if (char_len <= 0 || (cp + char_len > ep))
 155                 break;
 156
 157             end -= char_len;
 158
 159             if (iswcntrl(wide_char) || iswspace(wide_char)) {
 160                 sp += char_len;
 161 #else
 162             end--;
 163             if (iscntrl(*sp) || isspace(*sp)) {
 164                 sp++;
 165 #endif
 166                 if (!prevCtrl) {
 167                     *cp++ = ' ';
 168                     remaining--;
 169                 }
 170
 171                 prevCtrl = 1;
 172                 continue;
 173             }
 174             prevCtrl = 0;
 175
 176 #ifdef MULTIBYTE_SUPPORT
 177             w = wcwidth(wide_char);
 178             if (w >= 0 && remaining >= w) {
 179                 strncpy(cp, sp, char_len);
 180                 cp += char_len;
 181                 remaining -= w;
 182             }
 183             sp += char_len;
 184 #else
 185             *cp++ = *sp++;
 186             remaining--;
 187 #endif
 188         }
 189     }
 190
 191     if (ljust) {
 192         if (cp + remaining > ep)
 193             remaining = ep - cp;
 194         ep = cp + remaining;
 195         if (remaining > 0) {
 196             /* copy string to the right */
 197             while (--cp >= *dest)
 198                 *(cp + remaining) = *cp;
 199             /* add padding at the beginning */
 200             cp += remaining;
 201             for (c=remaining; c>0; c--)
 202                 *cp-- = fill;
 203         }
 204         *dest = ep;
 205     } else {
 206         /* pad remaining space */
 207         while (remaining-- > 0 && cp < ep)
 208                 *cp++ = fill;
 209         *dest = cp;
 210     }
 211 }
 212
 213 static void
 214 cpstripped (char **start, char *end, char *str)
 215 {
 216     int c;
 217     char *s = str;
 218
 219     if (!s)
 220         return;
 221
 222     /* skip any initial control characters or spaces */
 223     while ((c = (unsigned char) *s) &&
 224 #ifdef LOCALE
 225             (iscntrl(c) || isspace(c)))
 226 #else
 227             (c <= 32))
 228 #endif
 229         s++;
 230
 231     /* compact repeated control characters and spaces into a single space */
 232     while((c = (unsigned char) *s++) && *start < end)
 233         if (!iscntrl(c) && !isspace(c))
 234             *(*start)++ = c;
 235         else {
 236             while ((c = (unsigned char) *s) &&
 237 #ifdef LOCALE
 238                     (iscntrl(c) || isspace(c)))
 239 #else
 240                     (c <= 32))
 241 #endif
 242                 s++;
 243             *(*start)++ = ' ';
 244         }
 245 }
 246
 247 static char *lmonth[] = { "January",  "February","March",   "April",
 248                           "May",      "June",    "July",    "August",
 249                           "September","October", "November","December" };
 250
 251 static char *
 252 get_x400_friendly (char *mbox, char *buffer, int buffer_len)
 253 {
 254     char given[BUFSIZ], surname[BUFSIZ];
 255
 256     if (mbox == NULL)
 257         return NULL;
 258     if (*mbox == '"')
 259         mbox++;
 260     if (*mbox != '/')
 261         return NULL;
 262
 263     if (get_x400_comp (mbox, "/PN=", buffer, buffer_len)) {
 264         for (mbox = buffer; (mbox = strchr(mbox, '.')); )
 265             *mbox++ = ' ';
 266
 267         return buffer;
 268     }
 269
 270     if (!get_x400_comp (mbox, "/S=", surname, sizeof(surname)))
 271         return NULL;
 272
 273     if (get_x400_comp (mbox, "/G=", given, sizeof(given)))
 274         snprintf (buffer, buffer_len, "%s %s", given, surname);
 275     else
 276         snprintf (buffer, buffer_len, "%s", surname);
 277
 278     return buffer;
 279 }
 280
 281 static int
 282 get_x400_comp (char *mbox, char *key, char *buffer, int buffer_len)
 283 {
 284     int idx;
 285     char *cp;
 286
 287     if ((idx = stringdex (key, mbox)) < 0
 288             || !(cp = strchr(mbox += idx + strlen (key), '/')))
 289         return 0;
 290
 291     snprintf (buffer, buffer_len, "%*.*s", cp - mbox, cp - mbox, mbox);
 292     return 1;
 293 }
 294
 295 struct format *
 296 fmt_scan (struct format *format, char *scanl, int width, int *dat)
 297 {
 298     char *cp, *ep, *sp;
 299     char *savestr, *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                     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             char *lp, *lastb;
 805             int indent, wid, len;
 806
 807             lp = str;
 808             wid = value;
 809             len = strlen (str);
 810             sp = fmt->f_text;
 811             indent = strlen (sp);
 812             wid -= indent;
 813             while( (c = *sp++) && cp < ep)
 814                 *cp++ = c;
 815             while (len > wid) {
 816                 /* try to break at a comma; failing that, break at a
 817                  * space.
 818                  */
 819                 lastb = 0; sp = lp + wid;
 820                 while (sp > lp && (c = *--sp) != ',') {
 821                     if (! lastb && isspace(c))
 822                         lastb = sp - 1;
 823                 }
 824                 if (sp == lp) {
 825                     if (! (sp = lastb)) {
 826                         sp = lp + wid - 1;
 827                         while (*sp && *sp != ',' && !isspace(*sp))
 828                             sp++;
 829                         if (*sp != ',')
 830                             sp--;
 831                     }
 832                 }
 833                 len -= sp - lp + 1;
 834                 while (cp < ep && lp <= sp)
 835                     *cp++ = *lp++;
 836                 while (isspace(*lp))
 837                     lp++, len--;
 838                 if (*lp) {
 839                     if (cp < ep)
 840                         *cp++ = '\n';
 841                     for (i=indent; cp < ep && i > 0; i--)
 842                         *cp++ = ' ';
 843                 }
 844             }
 845             cpstripped (&cp, ep, lp);
 846             }
 847             break;
 848
 849         case FT_PARSEADDR:
 850             comp = fmt->f_comp;
 851             if (comp->c_flags & CF_PARSED)
 852                 break;
 853             if (comp->c_mn != &fmt_mnull)
 854                 mnfree (comp->c_mn);
 855             if ((sp = comp->c_text) && (sp = getname(sp)) &&
 856                 (mn = getm (sp, NULL, 0, fmt_norm, NULL))) {
 857                 comp->c_mn = mn;
 858                 while (getname(""))
 859                     ;
 860                 comp->c_flags |= CF_PARSED;
 861             } else {
 862                 while (getname(""))             /* XXX */
 863                     ;
 864                 comp->c_mn = &fmt_mnull;
 865             }
 866             break;
 867
 868         case FT_MYMBOX:
 869             /*
 870              * if there's no component, we say true.  Otherwise we
 871              * say "true" only if we can parse the address and it
 872              * matches one of our addresses.
 873              */
 874             comp = fmt->f_comp;
 875             if (comp->c_mn != &fmt_mnull)
 876                 mnfree (comp->c_mn);
 877             if ((sp = comp->c_text) && (sp = getname(sp)) &&
 878                 (mn = getm (sp, NULL, 0, AD_NAME, NULL))) {
 879                 comp->c_mn = mn;
 880                 if (ismymbox(mn))
 881                     comp->c_flags |= CF_TRUE;
 882                 else
 883                     comp->c_flags &= ~CF_TRUE;
 884                 while ((sp = getname(sp)))
 885                     if ((comp->c_flags & CF_TRUE) == 0 &&
 886                         (mn = getm (sp, NULL, 0, AD_NAME, NULL)))
 887                         if (ismymbox(mn))
 888                             comp->c_flags |= CF_TRUE;
 889             } else {
 890                 while (getname(""))             /* XXX */
 891                     ;
 892                 if (comp->c_text == 0)
 893                     comp->c_flags |= CF_TRUE;
 894                 else
 895                     comp->c_flags &= ~CF_TRUE;
 896                 comp->c_mn = &fmt_mnull;
 897             }
 898             break;
 899
 900         case FT_ADDTOSEQ:
 901 #ifdef LBL
 902             /* If we're working on a folder (as opposed to a file), add the
 903              * current msg to sequence given in literal field.  Don't
 904              * disturb string or value registers.
 905              */
 906             if (fmt_current_folder)
 907                     seq_addmsg(fmt_current_folder, fmt->f_text, dat[0], -1);
 908 #endif
 909             break;
 910         }
 911         fmt++;
 912     }
 913 #ifndef JLR
 914     finished:;
 915     if (cp[-1] != '\n')
 916         *cp++ = '\n';
 917     *cp   = 0;
 918     return ((struct format *)0);
 919 #else /* JLR */
 920     if (cp[-1] != '\n')
 921         *cp++ = '\n';
 922     while (fmt->f_type != FT_DONE)
 923         fmt++;
 924
 925     finished:;
 926     *cp = '\0';
 927     return (fmt->f_value ? ++fmt : (struct format *) 0);
 928
 929 #endif /* JLR */
 930 }