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;
 130     int end;           /* number of input bytes remaining in str */
 131 #ifdef MULTIBYTE_SUPPORT
 132     int char_len;      /* bytes in current character */
 133     int w;
 134     wchar_t wide_char;
 135 #endif
 136     char *sp;          /* current position in source string */
 137     char *cp = *dest;  /* current position in destination string */
 138     char *ep = cp + n; /* end of destination buffer */
 139     int prevCtrl = 1;
 140
 141     /* get alignment */
 142     ljust = 0;
 143     if ((remaining = (wid)) < 0) {
 144         remaining = -remaining;
 145         ljust++;
 146     }
 147     if ((sp = (str))) {
 148         mbtowc(NULL, NULL, 0); /* reset shift state */
 149         end = strlen(str);
 150         while (*sp && remaining > 0 && end > 0) {
 151 #ifdef MULTIBYTE_SUPPORT
 152             char_len = mbtowc(&wide_char, sp, end);
 153             if (char_len <= 0 || (cp + char_len > ep))
 154                 break;
 155
 156             end -= char_len;
 157
 158             if (iswcntrl(wide_char) || iswspace(wide_char)) {
 159                 sp += char_len;
 160 #else
 161             end--;
 162             if (iscntrl(*sp) || isspace(*sp)) {
 163                 sp++;
 164 #endif
 165                 if (!prevCtrl) {
 166                     *cp++ = ' ';
 167                     remaining--;
 168                 }
 169
 170                 prevCtrl = 1;
 171                 continue;
 172             }
 173             prevCtrl = 0;
 174
 175 #ifdef MULTIBYTE_SUPPORT
 176             w = wcwidth(wide_char);
 177             if (w >= 0 && remaining >= w) {
 178                 strncpy(cp, sp, char_len);
 179                 cp += char_len;
 180                 remaining -= w;
 181             }
 182             sp += char_len;
 183 #else
 184             *cp++ = *sp++;
 185             remaining--;
 186 #endif
 187         }
 188     }
 189
 190     if (ljust) {
 191         if (cp + remaining > ep)
 192             remaining = ep - cp;
 193         ep = cp + remaining;
 194         if (remaining > 0) {
 195             /* copy string to the right */
 196             while (--cp >= *dest)
 197                 *(cp + remaining) = *cp;
 198             /* add padding at the beginning */
 199             cp += remaining;
 200             for (c=remaining; c>0; c--)
 201                 *cp-- = fill;
 202         }
 203         *dest = ep;
 204     } else {
 205         /* pad remaining space */
 206         while (remaining-- > 0 && cp < ep)
 207                 *cp++ = fill;
 208         *dest = cp;
 209     }
 210 }
 211
 212 static void
 213 cpstripped (char **start, char *end, char *str)
 214 {
 215     int c;
 216     char *s = str;
 217
 218     if (!s)
 219         return;
 220
 221     /* skip any initial control characters or spaces */
 222     while ((c = (unsigned char) *s) &&
 223 #ifdef LOCALE
 224             (iscntrl(c) || isspace(c)))
 225 #else
 226             (c <= 32))
 227 #endif
 228         s++;
 229
 230     /* compact repeated control characters and spaces into a single space */
 231     while((c = (unsigned char) *s++) && *start < end)
 232         if (!iscntrl(c) && !isspace(c))
 233             *(*start)++ = c;
 234         else {
 235             while ((c = (unsigned char) *s) &&
 236 #ifdef LOCALE
 237                     (iscntrl(c) || isspace(c)))
 238 #else
 239                     (c <= 32))
 240 #endif
 241                 s++;
 242             *(*start)++ = ' ';
 243         }
 244 }
 245
 246 static char *lmonth[] = { "January",  "February","March",   "April",
 247                           "May",      "June",    "July",    "August",
 248                           "September","October", "November","December" };
 249
 250 static char *
 251 get_x400_friendly (char *mbox, char *buffer, int buffer_len)
 252 {
 253     char given[BUFSIZ], surname[BUFSIZ];
 254
 255     if (mbox == NULL)
 256         return NULL;
 257     if (*mbox == '"')
 258         mbox++;
 259     if (*mbox != '/')
 260         return NULL;
 261
 262     if (get_x400_comp (mbox, "/PN=", buffer, buffer_len)) {
 263         for (mbox = buffer; (mbox = strchr(mbox, '.')); )
 264             *mbox++ = ' ';
 265
 266         return buffer;
 267     }
 268
 269     if (!get_x400_comp (mbox, "/S=", surname, sizeof(surname)))
 270         return NULL;
 271
 272     if (get_x400_comp (mbox, "/G=", given, sizeof(given)))
 273         snprintf (buffer, buffer_len, "%s %s", given, surname);
 274     else
 275         snprintf (buffer, buffer_len, "%s", surname);
 276
 277     return buffer;
 278 }
 279
 280 static int
 281 get_x400_comp (char *mbox, char *key, char *buffer, int buffer_len)
 282 {
 283     int idx;
 284     char *cp;
 285
 286     if ((idx = stringdex (key, mbox)) < 0
 287             || !(cp = strchr(mbox += idx + strlen (key), '/')))
 288         return 0;
 289
 290     snprintf (buffer, buffer_len, "%*.*s", (int)(cp - mbox), (int)(cp - mbox), mbox);
 291     return 1;
 292 }
 293
 294 struct format *
 295 fmt_scan (struct format *format, char *scanl, int width, int *dat)
 296 {
 297     char *cp, *ep;
 298     unsigned char *sp;
 299     char *savestr = NULL;
 300     unsigned char *str = NULL;
 301     char buffer[BUFSIZ], buffer2[BUFSIZ];
 302     int i, c, ljust, n;
 303     int value = 0;
 304     time_t t;
 305     struct format *fmt;
 306     struct comp *comp;
 307     struct tws *tws;
 308     struct mailname *mn;
 309
 310     cp = scanl;
 311     ep = scanl + width - 1;
 312
 313     for (fmt = format; fmt->f_type != FT_DONE; fmt++)
 314         switch (fmt->f_type) {
 315         case FT_PARSEADDR:
 316         case FT_PARSEDATE:
 317             fmt->f_comp->c_flags &= ~CF_PARSED;
 318             break;
 319         }
 320
 321     fmt = format;
 322
 323     while (cp < ep) {
 324         switch (fmt->f_type) {
 325
 326         case FT_COMP:
 327             cpstripped (&cp, ep, fmt->f_comp->c_text);
 328             break;
 329         case FT_COMPF:
 330             cptrimmed (&cp, fmt->f_comp->c_text, fmt->f_width, fmt->f_fill, ep - cp);
 331             break;
 332
 333         case FT_LIT:
 334             sp = fmt->f_text;
 335             while( (c = *sp++) && cp < ep)
 336                 *cp++ = c;
 337             break;
 338         case FT_LITF:
 339             sp = fmt->f_text;
 340             ljust = 0;
 341             i = fmt->f_width;
 342             if (i < 0) {
 343                 i = -i;
 344                 ljust++;                /* XXX should do something with this */
 345             }
 346             while( (c = *sp++) && --i >= 0 && cp < ep)
 347                 *cp++ = c;
 348             while( --i >= 0 && cp < ep)
 349                 *cp++ = fmt->f_fill;
 350             break;
 351
 352         case FT_STR:
 353             cpstripped (&cp, ep, str);
 354             break;
 355         case FT_STRF:
 356             cptrimmed (&cp, str, fmt->f_width, fmt->f_fill, ep - cp);
 357             break;
 358         case FT_STRFW:
 359             adios (NULL, "internal error (FT_STRFW)");
 360
 361         case FT_NUM:
 362             n = snprintf(cp, ep - cp + 1, "%d", value);
 363             if (n >= 0) {
 364                 if (n >= ep - cp) {
 365                     cp = ep;
 366                 } else
 367                     cp += n;
 368             }
 369             break;
 370         case FT_NUMF:
 371             cpnumber (&cp, value, fmt->f_width, fmt->f_fill, ep - cp);
 372             break;
 373
 374         case FT_CHAR:
 375             *cp++ = fmt->f_char;
 376             break;
 377
 378         case FT_DONE:
 379             goto finished;
 380
 381         case FT_IF_S:
 382             if (!(value = (str && *str))) {
 383                 fmt += fmt->f_skip;
 384                 continue;
 385             }
 386             break;
 387
 388         case FT_IF_S_NULL:
 389             if (!(value = (str == NULL || *str == 0))) {
 390                 fmt += fmt->f_skip;
 391                 continue;
 392             }
 393             break;
 394
 395         case FT_IF_V_EQ:
 396             if (value != fmt->f_value) {
 397                 fmt += fmt->f_skip;
 398                 continue;
 399             }
 400             break;
 401
 402         case FT_IF_V_NE:
 403             if (value == fmt->f_value) {
 404                 fmt += fmt->f_skip;
 405                 continue;
 406             }
 407             break;
 408
 409         case FT_IF_V_GT:
 410             if (value <= fmt->f_value) {
 411                 fmt += fmt->f_skip;
 412                 continue;
 413             }
 414             break;
 415
 416         case FT_IF_MATCH:
 417             if (!(value = (str && match (str, fmt->f_text)))) {
 418                 fmt += fmt->f_skip;
 419                 continue;
 420             }
 421             break;
 422
 423         case FT_V_MATCH:
 424             if (str)
 425                 value = match (str, fmt->f_text);
 426             else
 427                 value = 0;
 428             break;
 429
 430         case FT_IF_AMATCH:
 431             if (!(value = (str && uprf (str, fmt->f_text)))) {
 432                 fmt += fmt->f_skip;
 433                 continue;
 434             }
 435             break;
 436
 437         case FT_V_AMATCH:
 438             value = uprf (str, fmt->f_text);
 439             break;
 440
 441         case FT_S_NONNULL:
 442             value = (str != NULL && *str != 0);
 443             break;
 444
 445         case FT_S_NULL:
 446             value = (str == NULL || *str == 0);
 447             break;
 448
 449         case FT_V_EQ:
 450             value = (fmt->f_value == value);
 451             break;
 452
 453         case FT_V_NE:
 454             value = (fmt->f_value != value);
 455             break;
 456
 457         case FT_V_GT:
 458             value = (fmt->f_value > value);
 459             break;
 460
 461         case FT_GOTO:
 462             fmt += fmt->f_skip;
 463             continue;
 464
 465         case FT_NOP:
 466             break;
 467
 468         case FT_LS_COMP:
 469             str = fmt->f_comp->c_text;
 470             break;
 471         case FT_LS_LIT:
 472             str = fmt->f_text;
 473             break;
 474         case FT_LS_GETENV:
 475             if (!(str = getenv (fmt->f_text)))
 476                 str = "";
 477             break;
 478         case FT_LS_CFIND:
 479             if (!(str = context_find (fmt->f_text)))
 480                 str = "";
 481             break;
 482
 483         case FT_LS_DECODECOMP:
 484             if (decode_rfc2047(fmt->f_comp->c_text, buffer2, sizeof(buffer2)))
 485                 str = buffer2;
 486             else
 487                 str = fmt->f_comp->c_text;
 488             break;
 489
 490         case FT_LS_DECODE:
 491             if (str && decode_rfc2047(str, buffer2, sizeof(buffer2)))
 492                 str = buffer2;
 493             break;
 494
 495         case FT_LS_TRIM:
 496             if (str) {
 497                     unsigned char *xp;
 498
 499                     strncpy(buffer, str, sizeof(buffer));
 500                     buffer[sizeof(buffer)-1] = '\0';
 501                     str = buffer;
 502                     while (isspace(*str))
 503                             str++;
 504                     ljust = 0;
 505                     if ((i = fmt->f_width) < 0) {
 506                             i = -i;
 507                             ljust++;
 508                     }
 509
 510                     if (!ljust && i > 0 && strlen(str) > i)
 511                             str[i] = '\0';
 512                     xp = str;
 513                     xp += strlen(str) - 1;
 514                     while (xp > str && isspace(*xp))
 515                             *xp-- = '\0';
 516                     if (ljust && i > 0 && strlen(str) > i)
 517                         str += strlen(str) - i;
 518             }
 519             break;
 520
 521         case FT_LV_COMPFLAG:
 522             value = (fmt->f_comp->c_flags & CF_TRUE) != 0;
 523             break;
 524         case FT_LV_COMP:
 525             value = (comp = fmt->f_comp)->c_text ? atoi(comp->c_text) : 0;
 526             break;
 527         case FT_LV_LIT:
 528             value = fmt->f_value;
 529             break;
 530         case FT_LV_DAT:
 531             value = dat[fmt->f_value];
 532             break;
 533         case FT_LV_STRLEN:
 534             if (str != NULL)
 535                     value = strlen(str);
 536             else
 537                     value = 0;
 538             break;
 539         case FT_LV_CHAR_LEFT:
 540             value = width - (cp - scanl);
 541             break;
 542         case FT_LV_PLUS_L:
 543             value += fmt->f_value;
 544             break;
 545         case FT_LV_MINUS_L:
 546             value = fmt->f_value - value;
 547             break;
 548         case FT_LV_DIVIDE_L:
 549             if (fmt->f_value)
 550                 value = value / fmt->f_value;
 551             else
 552                 value = 0;
 553             break;
 554         case FT_LV_MODULO_L:
 555             if (fmt->f_value)
 556                 value = value % fmt->f_value;
 557             else
 558                 value = 0;
 559             break;
 560         case FT_SAVESTR:
 561             savestr = str;
 562             break;
 563
 564         case FT_LV_SEC:
 565             value = fmt->f_comp->c_tws->tw_sec;
 566             break;
 567         case FT_LV_MIN:
 568             value = fmt->f_comp->c_tws->tw_min;
 569             break;
 570         case FT_LV_HOUR:
 571             value = fmt->f_comp->c_tws->tw_hour;
 572             break;
 573         case FT_LV_MDAY:
 574             value = fmt->f_comp->c_tws->tw_mday;
 575             break;
 576         case FT_LV_MON:
 577             value = fmt->f_comp->c_tws->tw_mon + 1;
 578             break;
 579         case FT_LS_MONTH:
 580             str = tw_moty[fmt->f_comp->c_tws->tw_mon];
 581             break;
 582         case FT_LS_LMONTH:
 583             str = lmonth[fmt->f_comp->c_tws->tw_mon];
 584             break;
 585         case FT_LS_ZONE:
 586             str = dtwszone (fmt->f_comp->c_tws);
 587             break;
 588         case FT_LV_YEAR:
 589             value = fmt->f_comp->c_tws->tw_year;
 590             break;
 591         case FT_LV_WDAY:
 592             if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
 593                 set_dotw (tws);
 594             value = tws->tw_wday;
 595             break;
 596         case FT_LS_DAY:
 597             if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
 598                 set_dotw (tws);
 599             str = tw_dotw[tws->tw_wday];
 600             break;
 601         case FT_LS_WEEKDAY:
 602             if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
 603                 set_dotw (tws);
 604             str = tw_ldotw[tws->tw_wday];
 605             break;
 606         case FT_LV_YDAY:
 607             value = fmt->f_comp->c_tws->tw_yday;
 608             break;
 609         case FT_LV_ZONE:
 610             value = fmt->f_comp->c_tws->tw_zone;
 611             break;
 612         case FT_LV_CLOCK:
 613             if ((value = fmt->f_comp->c_tws->tw_clock) == 0)
 614                 value = dmktime(fmt->f_comp->c_tws);
 615             break;
 616         case FT_LV_RCLOCK:
 617             if ((value = fmt->f_comp->c_tws->tw_clock) == 0)
 618                 value = dmktime(fmt->f_comp->c_tws);
 619             value = time((time_t *) 0) - value;
 620             break;
 621         case FT_LV_DAYF:
 622             if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
 623                 set_dotw (tws);
 624             switch (fmt->f_comp->c_tws->tw_flags & TW_SDAY) {
 625                 case TW_SEXP:
 626                     value = 1; break;
 627                 case TW_SIMP:
 628                     value = 0; break;
 629                 default:
 630                     value = -1; break;
 631             }
 632         case FT_LV_ZONEF:
 633             if ((fmt->f_comp->c_tws->tw_flags & TW_SZONE) == TW_SZEXP)
 634                     value = 1;
 635             else
 636                     value = -1;
 637             break;
 638         case FT_LV_DST:
 639             value = fmt->f_comp->c_tws->tw_flags & TW_DST;
 640             break;
 641         case FT_LS_822DATE:
 642             str = dasctime (fmt->f_comp->c_tws , TW_ZONE);
 643             break;
 644         case FT_LS_PRETTY:
 645             str = dasctime (fmt->f_comp->c_tws, TW_NULL);
 646             break;
 647
 648         case FT_LS_PERS:
 649             str = fmt->f_comp->c_mn->m_pers;
 650             break;
 651         case FT_LS_MBOX:
 652             str = fmt->f_comp->c_mn->m_mbox;
 653             break;
 654         case FT_LS_HOST:
 655             str = fmt->f_comp->c_mn->m_host;
 656             break;
 657         case FT_LS_PATH:
 658             str = fmt->f_comp->c_mn->m_path;
 659             break;
 660         case FT_LS_GNAME:
 661             str = fmt->f_comp->c_mn->m_gname;
 662             break;
 663         case FT_LS_NOTE:
 664             str = fmt->f_comp->c_mn->m_note;
 665             break;
 666         case FT_LS_822ADDR:
 667             str = adrformat( fmt->f_comp->c_mn );
 668             break;
 669         case FT_LV_HOSTTYPE:
 670             value = fmt->f_comp->c_mn->m_type;
 671             break;
 672         case FT_LV_INGRPF:
 673             value = fmt->f_comp->c_mn->m_ingrp;
 674             break;
 675         case FT_LV_NOHOSTF:
 676             value = fmt->f_comp->c_mn->m_nohost;
 677             break;
 678         case FT_LS_ADDR:
 679         case FT_LS_FRIENDLY:
 680             if ((mn = fmt->f_comp->c_mn) == &fmt_mnull) {
 681                 str = fmt->f_comp->c_text;
 682                 break;
 683             }
 684             if (fmt->f_type == FT_LS_ADDR)
 685                 goto unfriendly;
 686             if ((str = mn->m_pers) == NULL) {
 687                 if ((str = mn->m_note)) {
 688                     strncpy (buffer, str, sizeof(buffer));
 689                     buffer[sizeof(buffer)-1] = '\0';
 690                     str = buffer;
 691                     if (*str == '(')
 692                         str++;
 693                     sp = str + strlen(str) - 1;
 694                     if (*sp == ')') {
 695                         *sp-- = '\0';
 696                         while (sp >= str)
 697                             if (*sp == ' ')
 698                                 *sp-- = '\0';
 699                             else
 700                                 break;
 701                     }
 702                 } else if (!(str = get_x400_friendly (mn->m_mbox,
 703                                 buffer, sizeof(buffer)))) {
 704         unfriendly: ;
 705                   switch (mn->m_type) {
 706                     case LOCALHOST:
 707                         str = mn->m_mbox;
 708                         break;
 709                     case UUCPHOST:
 710                         snprintf (buffer, sizeof(buffer), "%s!%s",
 711                                 mn->m_host, mn->m_mbox);
 712                         str = buffer;
 713                         break;
 714                     default:
 715                         if (mn->m_mbox) {
 716                             snprintf (buffer, sizeof(buffer), "%s@%s",
 717                                 mn->m_mbox, mn->m_host);
 718                             str= buffer;
 719                         }
 720                         else
 721                             str = mn->m_text;
 722                         break;
 723                   }
 724                 }
 725             }
 726             break;
 727
 728
 729                 /* UNQUOTEs RFC-2822 quoted-string and quoted-pair */
 730         case FT_LS_UNQUOTE:
 731             if (str) {
 732                 int m;
 733                 strncpy(buffer, str, sizeof(buffer));
 734                 /* strncpy doesn't NUL-terminate if it fills the buffer */
 735                 buffer[sizeof(buffer)-1] = '\0';
 736                 str = buffer;
 737
 738                 /* we will parse from buffer to buffer2 */
 739                 n = 0; /* n is the input position in str */
 740                 m = 0; /* m is the ouput position in buffer2 */
 741
 742                 while ( str[n] != '\0') {
 743                     switch ( str[n] ) {
 744                         case '\\':
 745                             n++;
 746                             if ( str[n] != '\0')
 747                                 buffer2[m++] = str[n++];
 748                             break;
 749                         case '"':
 750                             n++;
 751                             break;
 752                         default:
 753                             buffer2[m++] = str[n++];
 754                             break;
 755                         }
 756                 }
 757                 buffer2[m] = '\0';
 758                 str = buffer2;
 759             }
 760             break;
 761
 762         case FT_LOCALDATE:
 763             comp = fmt->f_comp;
 764             if ((t = comp->c_tws->tw_clock) == 0)
 765                 t = dmktime(comp->c_tws);
 766             tws = dlocaltime(&t);
 767             *comp->c_tws = *tws;
 768             break;
 769
 770         case FT_GMTDATE:
 771             comp = fmt->f_comp;
 772             if ((t = comp->c_tws->tw_clock) == 0)
 773                 t = dmktime(comp->c_tws);
 774             tws = dgmtime(&t);
 775             *comp->c_tws = *tws;
 776             break;
 777
 778         case FT_PARSEDATE:
 779             comp = fmt->f_comp;
 780             if (comp->c_flags & CF_PARSED)
 781                 break;
 782             if ((sp = comp->c_text) && (tws = dparsetime(sp))) {
 783                 *comp->c_tws = *tws;
 784                 comp->c_flags &= ~CF_TRUE;
 785             } else if ((comp->c_flags & CF_DATEFAB) == 0) {
 786                 memset ((char *) comp->c_tws, 0, sizeof *comp->c_tws);
 787                 comp->c_flags = CF_TRUE;
 788             }
 789             comp->c_flags |= CF_PARSED;
 790             break;
 791
 792         case FT_FORMATADDR:
 793             /* hook for custom address list formatting (see replsbr.c) */
 794             str = formataddr (savestr, str);
 795             break;
 796
 797         case FT_PUTADDR:
 798             /* output the str register as an address component,
 799              * splitting it into multiple lines if necessary.  The
 800              * value reg. contains the max line length.  The lit.
 801              * field may contain a string to prepend to the result
 802              * (e.g., "To: ")
 803              */
 804             {
 805             unsigned char *lp;
 806             char *lastb;
 807             int indent, wid, len;
 808
 809             lp = str;
 810             wid = value;
 811             len = strlen (str);
 812             sp = fmt->f_text;
 813             indent = strlen (sp);
 814             wid -= indent;
 815             while( (c = *sp++) && cp < ep)
 816                 *cp++ = c;
 817             while (len > wid) {
 818                 /* try to break at a comma; failing that, break at a
 819                  * space.
 820                  */
 821                 lastb = 0; sp = lp + wid;
 822                 while (sp > lp && (c = *--sp) != ',') {
 823                     if (! lastb && isspace(c))
 824                         lastb = sp - 1;
 825                 }
 826                 if (sp == lp) {
 827                     if (! (sp = lastb)) {
 828                         sp = lp + wid - 1;
 829                         while (*sp && *sp != ',' && !isspace(*sp))
 830                             sp++;
 831                         if (*sp != ',')
 832                             sp--;
 833                     }
 834                 }
 835                 len -= sp - lp + 1;
 836                 while (cp < ep && lp <= sp)
 837                     *cp++ = *lp++;
 838                 while (isspace(*lp))
 839                     lp++, len--;
 840                 if (*lp) {
 841                     if (cp < ep)
 842                         *cp++ = '\n';
 843                     for (i=indent; cp < ep && i > 0; i--)
 844                         *cp++ = ' ';
 845                 }
 846             }
 847             cpstripped (&cp, ep, lp);
 848             }
 849             break;
 850
 851         case FT_PARSEADDR:
 852             comp = fmt->f_comp;
 853             if (comp->c_flags & CF_PARSED)
 854                 break;
 855             if (comp->c_mn != &fmt_mnull)
 856                 mnfree (comp->c_mn);
 857             if ((sp = comp->c_text) && (sp = getname(sp)) &&
 858                 (mn = getm (sp, NULL, 0, fmt_norm, NULL))) {
 859                 comp->c_mn = mn;
 860                 while (getname(""))
 861                     ;
 862                 comp->c_flags |= CF_PARSED;
 863             } else {
 864                 while (getname(""))             /* XXX */
 865                     ;
 866                 comp->c_mn = &fmt_mnull;
 867             }
 868             break;
 869
 870         case FT_MYMBOX:
 871             /*
 872              * if there's no component, we say true.  Otherwise we
 873              * say "true" only if we can parse the address and it
 874              * matches one of our addresses.
 875              */
 876             comp = fmt->f_comp;
 877             if (comp->c_mn != &fmt_mnull)
 878                 mnfree (comp->c_mn);
 879             if ((sp = comp->c_text) && (sp = getname(sp)) &&
 880                 (mn = getm (sp, NULL, 0, AD_NAME, NULL))) {
 881                 comp->c_mn = mn;
 882                 if (ismymbox(mn))
 883                     comp->c_flags |= CF_TRUE;
 884                 else
 885                     comp->c_flags &= ~CF_TRUE;
 886                 while ((sp = getname(sp)))
 887                     if ((comp->c_flags & CF_TRUE) == 0 &&
 888                         (mn = getm (sp, NULL, 0, AD_NAME, NULL)))
 889                         if (ismymbox(mn))
 890                             comp->c_flags |= CF_TRUE;
 891             } else {
 892                 while (getname(""))             /* XXX */
 893                     ;
 894                 if (comp->c_text == 0)
 895                     comp->c_flags |= CF_TRUE;
 896                 else
 897                     comp->c_flags &= ~CF_TRUE;
 898                 comp->c_mn = &fmt_mnull;
 899             }
 900             break;
 901
 902         case FT_ADDTOSEQ:
 903 #ifdef LBL
 904             /* If we're working on a folder (as opposed to a file), add the
 905              * current msg to sequence given in literal field.  Don't
 906              * disturb string or value registers.
 907              */
 908             if (fmt_current_folder)
 909                     seq_addmsg(fmt_current_folder, fmt->f_text, dat[0], -1);
 910 #endif
 911             break;
 912         }
 913         fmt++;
 914     }
 915 #ifndef JLR
 916     finished:;
 917     if (cp[-1] != '\n')
 918         *cp++ = '\n';
 919     *cp   = 0;
 920     return ((struct format *)0);
 921 #else /* JLR */
 922     if (cp[-1] != '\n')
 923         *cp++ = '\n';
 924     while (fmt->f_type != FT_DONE)
 925         fmt++;
 926
 927     finished:;
 928     *cp = '\0';
 929     return (fmt->f_value ? ++fmt : (struct format *) 0);
 930
 931 #endif /* JLR */
 932 }