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  * This is the engine that processes the format instructions created by
  10  * fmt_compile (found in fmt_compile.c).
  11  */
  12
  13 #include <h/mh.h>
  14 #include <h/addrsbr.h>
  15 #include <h/fmt_scan.h>
  16 #include <h/tws.h>
  17 #include <h/fmt_compile.h>
  18
  19 #ifdef HAVE_SYS_TIME_H
  20 # include <sys/time.h>
  21 #endif
  22 #include <time.h>
  23 #ifdef MULTIBYTE_SUPPORT
  24 #  include <wctype.h>
  25 #  include <wchar.h>
  26 #endif
  27
  28 #ifdef LBL
  29 struct msgs *fmt_current_folder; /* current folder (set by main program) */
  30 #endif
  31
  32 extern int fmt_norm;            /* defined in sbr/fmt_def.c = AD_NAME */
  33 struct mailname fmt_mnull = { NULL, NULL, NULL, NULL, NULL, NULL, 0, 0, 0, 0,
  34                               NULL, NULL };
  35
  36 /*
  37  * static prototypes
  38  */
  39 static int match (char *, char *);
  40 static char *get_x400_friendly (char *, char *, int);
  41 static int get_x400_comp (char *, char *, char *, int);
  42
  43
  44 /*
  45  * test if string "sub" appears anywhere in
  46  * string "str" (case insensitive).
  47  */
  48
  49 static int
  50 match (char *str, char *sub)
  51 {
  52     int c1, c2;
  53     char *s1, *s2;
  54
  55 #ifdef LOCALE
  56     while ((c1 = *sub)) {
  57         c1 = (isalpha(c1) && isupper(c1)) ? tolower(c1) : c1;
  58         while ((c2 = *str++) && c1 != ((isalpha(c2) && isupper(c2)) ? tolower(c2) : c2))
  59             ;
  60         if (! c2)
  61             return 0;
  62         s1 = sub + 1; s2 = str;
  63         while ((c1 = *s1++) && ((isalpha(c1) && isupper(c1)) ? tolower(c1) : c1) == ((isalpha(c2 =*s2++) && isupper(c2)) ? tolower(c2) : c2))
  64             ;
  65         if (! c1)
  66             return 1;
  67     }
  68 #else
  69     while ((c1 = *sub)) {
  70         while ((c2 = *str++) && (c1 | 040) != (c2 | 040))
  71             ;
  72         if (! c2)
  73             return 0;
  74         s1 = sub + 1; s2 = str;
  75         while ((c1 = *s1++) && (c1 | 040) == (*s2++ | 040))
  76             ;
  77         if (! c1)
  78             return 1;
  79     }
  80 #endif
  81     return 1;
  82 }
  83
  84 /*
  85  * copy a number to the destination subject to a maximum width
  86  */
  87 static void
  88 cpnumber(char **dest, int num, unsigned int wid, char fill, size_t n) {
  89     int i, c;
  90     char *sp;
  91     char *cp = *dest;
  92     char *ep = cp + n;
  93
  94     if (cp + wid < ep) {
  95         if ((i = (num)) < 0)
  96             i = -(num);
  97         if ((c = (wid)) < 0)
  98             c = -c;
  99         sp = cp + c;
 100         do {
 101             *--sp = (i % 10) + '0';
 102             i /= 10;
 103         } while (i > 0 && sp > cp);
 104         if (i > 0)
 105             *sp = '?';
 106         else if ((num) < 0 && sp > cp)
 107             *--sp = '-';
 108         while (sp > cp)
 109             *--sp = fill;
 110         cp += c;
 111     }
 112     *dest = cp;
 113 }
 114
 115 /*
 116  * copy string from str to dest padding with the fill character to a size
 117  * of wid characters. if wid is negative, the string is right aligned
 118  * no more than n bytes are copied
 119  */
 120 static void
 121 cptrimmed(char **dest, char *str, unsigned int wid, char fill, size_t n) {
 122     int remaining;     /* remaining output width available */
 123     int c, ljust;
 124     int end;           /* number of input bytes remaining in str */
 125 #ifdef MULTIBYTE_SUPPORT
 126     int char_len;      /* bytes in current character */
 127     int w;
 128     wchar_t wide_char;
 129 #endif
 130     char *sp;          /* current position in source string */
 131     char *cp = *dest;  /* current position in destination string */
 132     char *ep = cp + n; /* end of destination buffer */
 133     int prevCtrl = 1;
 134
 135     /* get alignment */
 136     ljust = 0;
 137     if ((remaining = (wid)) < 0) {
 138         remaining = -remaining;
 139         ljust++;
 140     }
 141     if ((sp = (str))) {
 142         mbtowc(NULL, NULL, 0); /* reset shift state */
 143         end = strlen(str);
 144         while (*sp && remaining > 0 && end > 0) {
 145 #ifdef MULTIBYTE_SUPPORT
 146             char_len = mbtowc(&wide_char, sp, end);
 147             if (char_len <= 0 || (cp + char_len > ep))
 148                 break;
 149
 150             end -= char_len;
 151
 152             if (iswcntrl(wide_char) || iswspace(wide_char)) {
 153                 sp += char_len;
 154 #else
 155             int c;
 156             end--;
 157             /* isnctrl(), etc., take an int argument.  Cygwin's ctype.h
 158                intentionally warns if they are passed a char. */
 159             c = *sp;
 160             if (iscntrl(c) || isspace(c)) {
 161                 sp++;
 162 #endif
 163                 if (!prevCtrl) {
 164                     *cp++ = ' ';
 165                     remaining--;
 166                 }
 167
 168                 prevCtrl = 1;
 169                 continue;
 170             }
 171             prevCtrl = 0;
 172
 173 #ifdef MULTIBYTE_SUPPORT
 174             w = wcwidth(wide_char);
 175             if (w >= 0 && remaining >= w) {
 176                 strncpy(cp, sp, char_len);
 177                 cp += char_len;
 178                 remaining -= w;
 179             }
 180             sp += char_len;
 181 #else
 182             *cp++ = *sp++;
 183             remaining--;
 184 #endif
 185         }
 186     }
 187
 188     if (ljust) {
 189         if (cp + remaining > ep)
 190             remaining = ep - cp;
 191         ep = cp + remaining;
 192         if (remaining > 0) {
 193             /* copy string to the right */
 194             while (--cp >= *dest)
 195                 *(cp + remaining) = *cp;
 196             /* add padding at the beginning */
 197             cp += remaining;
 198             for (c=remaining; c>0; c--)
 199                 *cp-- = fill;
 200         }
 201         *dest = ep;
 202     } else {
 203         /* pad remaining space */
 204         while (remaining-- > 0 && cp < ep)
 205                 *cp++ = fill;
 206         *dest = cp;
 207     }
 208 }
 209
 210 static void
 211 cpstripped (char **dest, char *end, char *str)
 212 {
 213     int prevCtrl = 1;   /* This is 1 so we strip out leading spaces */
 214     int len;
 215 #ifdef MULTIBYTE_SUPPORT
 216     int char_len;
 217     wchar_t wide_char;
 218 #endif /* MULTIBYTE_SUPPORT */
 219
 220     if (!str)
 221         return;
 222
 223     len = strlen(str);
 224
 225 #ifdef MULTIBYTE_SUPPORT
 226     mbtowc(NULL, NULL, 0);  /* Reset shift state */
 227 #endif /* MULTIBYTE_SUPPORT */
 228
 229     /*
 230      * Process each character at a time; if we have multibyte support
 231      * then deal with that here.
 232      */
 233
 234     while (*str != '\0' && len > 0 && *dest < end) {
 235 #ifdef MULTIBYTE_SUPPORT
 236         char_len = mbtowc(&wide_char, str, len);
 237
 238         if (char_len <= 0 || *dest + char_len > end)
 239             break;
 240
 241         len -= char_len;
 242
 243         if (iswcntrl(wide_char) || iswspace(wide_char)) {
 244             str += char_len;
 245 #else /* MULTIBYTE_SUPPORT */
 246         int c = *str;
 247         len--;
 248         if (iscntrl(c) || isspace(c)) {
 249             str++;
 250 #endif /* MULTIBYTE_SUPPORT */
 251             if (! prevCtrl) {
 252                 *(*dest)++ = ' ';
 253             }
 254
 255             prevCtrl = 1;
 256             continue;
 257         }
 258
 259         prevCtrl = 0;
 260
 261 #ifdef MULTIBYTE_SUPPORT
 262         memcpy(*dest, str, char_len);
 263         str += char_len;
 264         *dest += char_len;
 265 #else /* MULTIBYE_SUPPORT */
 266         *(*dest)++ = *str++
 267 #endif /* MULTIBYTE_SUPPORT */
 268     }
 269 }
 270
 271 static char *lmonth[] = { "January",  "February","March",   "April",
 272                           "May",      "June",    "July",    "August",
 273                           "September","October", "November","December" };
 274
 275 static char *
 276 get_x400_friendly (char *mbox, char *buffer, int buffer_len)
 277 {
 278     char given[BUFSIZ], surname[BUFSIZ];
 279
 280     if (mbox == NULL)
 281         return NULL;
 282     if (*mbox == '"')
 283         mbox++;
 284     if (*mbox != '/')
 285         return NULL;
 286
 287     if (get_x400_comp (mbox, "/PN=", buffer, buffer_len)) {
 288         for (mbox = buffer; (mbox = strchr(mbox, '.')); )
 289             *mbox++ = ' ';
 290
 291         return buffer;
 292     }
 293
 294     if (!get_x400_comp (mbox, "/S=", surname, sizeof(surname)))
 295         return NULL;
 296
 297     if (get_x400_comp (mbox, "/G=", given, sizeof(given)))
 298         snprintf (buffer, buffer_len, "%s %s", given, surname);
 299     else
 300         snprintf (buffer, buffer_len, "%s", surname);
 301
 302     return buffer;
 303 }
 304
 305 static int
 306 get_x400_comp (char *mbox, char *key, char *buffer, int buffer_len)
 307 {
 308     int idx;
 309     char *cp;
 310
 311     if ((idx = stringdex (key, mbox)) < 0
 312             || !(cp = strchr(mbox += idx + strlen (key), '/')))
 313         return 0;
 314
 315     snprintf (buffer, buffer_len, "%*.*s", (int)(cp - mbox), (int)(cp - mbox), mbox);
 316     return 1;
 317 }
 318
 319 struct format *
 320 fmt_scan (struct format *format, char *scanl, int width, int *dat)
 321 {
 322     char *cp, *ep;
 323     unsigned char *sp;
 324     char *savestr = NULL;
 325     unsigned char *str = NULL;
 326     char buffer[BUFSIZ], buffer2[BUFSIZ];
 327     int i, c, ljust, n;
 328     int value = 0;
 329     time_t t;
 330     struct format *fmt;
 331     struct comp *comp;
 332     struct tws *tws;
 333     struct mailname *mn;
 334
 335     cp = scanl;
 336     ep = scanl + width - 1;
 337
 338     for (fmt = format; fmt->f_type != FT_DONE; fmt++)
 339         switch (fmt->f_type) {
 340         case FT_PARSEADDR:
 341         case FT_PARSEDATE:
 342             fmt->f_comp->c_flags &= ~CF_PARSED;
 343             break;
 344         case FT_COMP:
 345         case FT_COMPF:
 346         case FT_LS_COMP:
 347         case FT_LS_DECODECOMP:
 348             /*
 349              * Trim these components of any newlines.
 350              *
 351              * But don't trim the "body" and "text" components.
 352              */
 353
 354             comp = fmt->f_comp;
 355
 356             if (! (comp->c_flags & CF_TRIMMED) && comp->c_text) {
 357                 i = strlen(comp->c_text);
 358                 if (comp->c_text[i - 1] == '\n' &&
 359                         strcmp(comp->c_name, "body") != 0 &&
 360                         strcmp(comp->c_name, "text") != 0)
 361                     comp->c_text[i - 1] = '\0';
 362                 comp->c_flags |= CF_TRIMMED;
 363             }
 364             break;
 365         }
 366
 367     fmt = format;
 368
 369     while (cp < ep) {
 370         switch (fmt->f_type) {
 371
 372         case FT_COMP:
 373             cpstripped (&cp, ep, fmt->f_comp->c_text);
 374             break;
 375         case FT_COMPF:
 376             cptrimmed (&cp, fmt->f_comp->c_text, fmt->f_width, fmt->f_fill, ep - cp);
 377             break;
 378
 379         case FT_LIT:
 380             sp = fmt->f_text;
 381             while( (c = *sp++) && cp < ep)
 382                 *cp++ = c;
 383             break;
 384         case FT_LITF:
 385             sp = fmt->f_text;
 386             ljust = 0;
 387             i = fmt->f_width;
 388             if (i < 0) {
 389                 i = -i;
 390                 ljust++;                /* XXX should do something with this */
 391             }
 392             while( (c = *sp++) && --i >= 0 && cp < ep)
 393                 *cp++ = c;
 394             while( --i >= 0 && cp < ep)
 395                 *cp++ = fmt->f_fill;
 396             break;
 397
 398         case FT_STR:
 399             cpstripped (&cp, ep, str);
 400             break;
 401         case FT_STRF:
 402             cptrimmed (&cp, str, fmt->f_width, fmt->f_fill, ep - cp);
 403             break;
 404         case FT_STRLIT:
 405             sp = str;
 406             while ((c = *sp++) && cp < ep)
 407                 *cp++ = c;
 408             break;
 409         case FT_STRFW:
 410             adios (NULL, "internal error (FT_STRFW)");
 411
 412         case FT_NUM:
 413             n = snprintf(cp, ep - cp + 1, "%d", value);
 414             if (n >= 0) {
 415                 if (n >= ep - cp) {
 416                     cp = ep;
 417                 } else
 418                     cp += n;
 419             }
 420             break;
 421         case FT_NUMF:
 422             cpnumber (&cp, value, fmt->f_width, fmt->f_fill, ep - cp);
 423             break;
 424
 425         case FT_CHAR:
 426             *cp++ = fmt->f_char;
 427             break;
 428
 429         case FT_DONE:
 430             goto finished;
 431
 432         case FT_IF_S:
 433             if (!(value = (str && *str))) {
 434                 fmt += fmt->f_skip;
 435                 continue;
 436             }
 437             break;
 438
 439         case FT_IF_S_NULL:
 440             if (!(value = (str == NULL || *str == 0))) {
 441                 fmt += fmt->f_skip;
 442                 continue;
 443             }
 444             break;
 445
 446         case FT_IF_V_EQ:
 447             if (value != fmt->f_value) {
 448                 fmt += fmt->f_skip;
 449                 continue;
 450             }
 451             break;
 452
 453         case FT_IF_V_NE:
 454             if (value == fmt->f_value) {
 455                 fmt += fmt->f_skip;
 456                 continue;
 457             }
 458             break;
 459
 460         case FT_IF_V_GT:
 461             if (value <= fmt->f_value) {
 462                 fmt += fmt->f_skip;
 463                 continue;
 464             }
 465             break;
 466
 467         case FT_IF_MATCH:
 468             if (!(value = (str && match (str, fmt->f_text)))) {
 469                 fmt += fmt->f_skip;
 470                 continue;
 471             }
 472             break;
 473
 474         case FT_V_MATCH:
 475             if (str)
 476                 value = match (str, fmt->f_text);
 477             else
 478                 value = 0;
 479             break;
 480
 481         case FT_IF_AMATCH:
 482             if (!(value = (str && uprf (str, fmt->f_text)))) {
 483                 fmt += fmt->f_skip;
 484                 continue;
 485             }
 486             break;
 487
 488         case FT_V_AMATCH:
 489             value = uprf (str, fmt->f_text);
 490             break;
 491
 492         case FT_S_NONNULL:
 493             value = (str != NULL && *str != 0);
 494             break;
 495
 496         case FT_S_NULL:
 497             value = (str == NULL || *str == 0);
 498             break;
 499
 500         case FT_V_EQ:
 501             value = (fmt->f_value == value);
 502             break;
 503
 504         case FT_V_NE:
 505             value = (fmt->f_value != value);
 506             break;
 507
 508         case FT_V_GT:
 509             value = (fmt->f_value > value);
 510             break;
 511
 512         case FT_GOTO:
 513             fmt += fmt->f_skip;
 514             continue;
 515
 516         case FT_NOP:
 517             break;
 518
 519         case FT_LS_COMP:
 520             str = fmt->f_comp->c_text;
 521             break;
 522         case FT_LS_LIT:
 523             str = fmt->f_text;
 524             break;
 525         case FT_LS_GETENV:
 526             if (!(str = getenv (fmt->f_text)))
 527                 str = "";
 528             break;
 529         case FT_LS_CFIND:
 530             if (!(str = context_find (fmt->f_text)))
 531                 str = "";
 532             break;
 533
 534         case FT_LS_DECODECOMP:
 535             if (decode_rfc2047(fmt->f_comp->c_text, buffer2, sizeof(buffer2)))
 536                 str = buffer2;
 537             else
 538                 str = fmt->f_comp->c_text;
 539             break;
 540
 541         case FT_LS_DECODE:
 542             if (str && decode_rfc2047(str, buffer2, sizeof(buffer2)))
 543                 str = buffer2;
 544             break;
 545
 546         case FT_LS_TRIM:
 547             if (str) {
 548                     unsigned char *xp;
 549
 550                     strncpy(buffer, str, sizeof(buffer));
 551                     buffer[sizeof(buffer)-1] = '\0';
 552                     str = buffer;
 553                     while (isspace(*str))
 554                             str++;
 555                     ljust = 0;
 556                     if ((i = fmt->f_width) < 0) {
 557                             i = -i;
 558                             ljust++;
 559                     }
 560
 561                     if (!ljust && i > 0 && (int) strlen(str) > i)
 562                             str[i] = '\0';
 563                     xp = str;
 564                     xp += strlen(str) - 1;
 565                     while (xp > str && isspace(*xp))
 566                             *xp-- = '\0';
 567                     if (ljust && i > 0 && (int) strlen(str) > i)
 568                         str += strlen(str) - i;
 569             }
 570             break;
 571
 572         case FT_LV_COMPFLAG:
 573             value = (fmt->f_comp->c_flags & CF_TRUE) != 0;
 574             break;
 575         case FT_LV_COMP:
 576             value = (comp = fmt->f_comp)->c_text ? atoi(comp->c_text) : 0;
 577             break;
 578         case FT_LV_LIT:
 579             value = fmt->f_value;
 580             break;
 581         case FT_LV_DAT:
 582             value = dat[fmt->f_value];
 583             break;
 584         case FT_LV_STRLEN:
 585             if (str != NULL)
 586                     value = strlen(str);
 587             else
 588                     value = 0;
 589             break;
 590         case FT_LV_CHAR_LEFT:
 591             value = width - (cp - scanl);
 592             break;
 593         case FT_LV_PLUS_L:
 594             value += fmt->f_value;
 595             break;
 596         case FT_LV_MINUS_L:
 597             value = fmt->f_value - value;
 598             break;
 599         case FT_LV_DIVIDE_L:
 600             if (fmt->f_value)
 601                 value = value / fmt->f_value;
 602             else
 603                 value = 0;
 604             break;
 605         case FT_LV_MODULO_L:
 606             if (fmt->f_value)
 607                 value = value % fmt->f_value;
 608             else
 609                 value = 0;
 610             break;
 611         case FT_SAVESTR:
 612             savestr = str;
 613             break;
 614
 615         case FT_LV_SEC:
 616             value = fmt->f_comp->c_tws->tw_sec;
 617             break;
 618         case FT_LV_MIN:
 619             value = fmt->f_comp->c_tws->tw_min;
 620             break;
 621         case FT_LV_HOUR:
 622             value = fmt->f_comp->c_tws->tw_hour;
 623             break;
 624         case FT_LV_MDAY:
 625             value = fmt->f_comp->c_tws->tw_mday;
 626             break;
 627         case FT_LV_MON:
 628             value = fmt->f_comp->c_tws->tw_mon + 1;
 629             break;
 630         case FT_LS_MONTH:
 631             str = tw_moty[fmt->f_comp->c_tws->tw_mon];
 632             break;
 633         case FT_LS_LMONTH:
 634             str = lmonth[fmt->f_comp->c_tws->tw_mon];
 635             break;
 636         case FT_LS_ZONE:
 637             str = dtwszone (fmt->f_comp->c_tws);
 638             break;
 639         case FT_LV_YEAR:
 640             value = fmt->f_comp->c_tws->tw_year;
 641             break;
 642         case FT_LV_WDAY:
 643             if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
 644                 set_dotw (tws);
 645             value = tws->tw_wday;
 646             break;
 647         case FT_LS_DAY:
 648             if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
 649                 set_dotw (tws);
 650             str = tw_dotw[tws->tw_wday];
 651             break;
 652         case FT_LS_WEEKDAY:
 653             if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
 654                 set_dotw (tws);
 655             str = tw_ldotw[tws->tw_wday];
 656             break;
 657         case FT_LV_YDAY:
 658             value = fmt->f_comp->c_tws->tw_yday;
 659             break;
 660         case FT_LV_ZONE:
 661             value = fmt->f_comp->c_tws->tw_zone;
 662             break;
 663         case FT_LV_CLOCK:
 664             if ((value = fmt->f_comp->c_tws->tw_clock) == 0)
 665                 value = dmktime(fmt->f_comp->c_tws);
 666             break;
 667         case FT_LV_RCLOCK:
 668             if ((value = fmt->f_comp->c_tws->tw_clock) == 0)
 669                 value = dmktime(fmt->f_comp->c_tws);
 670             value = time((time_t *) 0) - value;
 671             break;
 672         case FT_LV_DAYF:
 673             if (!(((tws = fmt->f_comp->c_tws)->tw_flags) & (TW_SEXP|TW_SIMP)))
 674                 set_dotw (tws);
 675             switch (fmt->f_comp->c_tws->tw_flags & TW_SDAY) {
 676                 case TW_SEXP:
 677                     value = 1; break;
 678                 case TW_SIMP:
 679                     value = 0; break;
 680                 default:
 681                     value = -1; break;
 682             }
 683         case FT_LV_ZONEF:
 684             if ((fmt->f_comp->c_tws->tw_flags & TW_SZONE) == TW_SZEXP)
 685                     value = 1;
 686             else
 687                     value = -1;
 688             break;
 689         case FT_LV_DST:
 690             value = fmt->f_comp->c_tws->tw_flags & TW_DST;
 691             break;
 692         case FT_LS_822DATE:
 693             str = dasctime (fmt->f_comp->c_tws , TW_ZONE);
 694             break;
 695         case FT_LS_PRETTY:
 696             str = dasctime (fmt->f_comp->c_tws, TW_NULL);
 697             break;
 698
 699         case FT_LS_PERS:
 700             str = fmt->f_comp->c_mn->m_pers;
 701             break;
 702         case FT_LS_MBOX:
 703             str = fmt->f_comp->c_mn->m_mbox;
 704             break;
 705         case FT_LS_HOST:
 706             str = fmt->f_comp->c_mn->m_host;
 707             break;
 708         case FT_LS_PATH:
 709             str = fmt->f_comp->c_mn->m_path;
 710             break;
 711         case FT_LS_GNAME:
 712             str = fmt->f_comp->c_mn->m_gname;
 713             break;
 714         case FT_LS_NOTE:
 715             str = fmt->f_comp->c_mn->m_note;
 716             break;
 717         case FT_LS_822ADDR:
 718             str = adrformat( fmt->f_comp->c_mn );
 719             break;
 720         case FT_LV_HOSTTYPE:
 721             value = fmt->f_comp->c_mn->m_type;
 722             break;
 723         case FT_LV_INGRPF:
 724             value = fmt->f_comp->c_mn->m_ingrp;
 725             break;
 726         case FT_LV_NOHOSTF:
 727             value = fmt->f_comp->c_mn->m_nohost;
 728             break;
 729         case FT_LS_ADDR:
 730         case FT_LS_FRIENDLY:
 731             if ((mn = fmt->f_comp->c_mn) == &fmt_mnull) {
 732                 str = fmt->f_comp->c_text;
 733                 break;
 734             }
 735             if (fmt->f_type == FT_LS_ADDR)
 736                 goto unfriendly;
 737             if ((str = mn->m_pers) == NULL) {
 738                 if ((str = mn->m_note)) {
 739                     strncpy (buffer, str, sizeof(buffer));
 740                     buffer[sizeof(buffer)-1] = '\0';
 741                     str = buffer;
 742                     if (*str == '(')
 743                         str++;
 744                     sp = str + strlen(str) - 1;
 745                     if (*sp == ')') {
 746                         *sp-- = '\0';
 747                         while (sp >= str)
 748                             if (*sp == ' ')
 749                                 *sp-- = '\0';
 750                             else
 751                                 break;
 752                     }
 753                 } else if (!(str = get_x400_friendly (mn->m_mbox,
 754                                 buffer, sizeof(buffer)))) {
 755         unfriendly: ;
 756                   switch (mn->m_type) {
 757                     case LOCALHOST:
 758                         str = mn->m_mbox;
 759                         break;
 760                     case UUCPHOST:
 761                         snprintf (buffer, sizeof(buffer), "%s!%s",
 762                                 mn->m_host, mn->m_mbox);
 763                         str = buffer;
 764                         break;
 765                     default:
 766                         if (mn->m_mbox) {
 767                             snprintf (buffer, sizeof(buffer), "%s@%s",
 768                                 mn->m_mbox, mn->m_host);
 769                             str= buffer;
 770                         }
 771                         else
 772                             str = mn->m_text;
 773                         break;
 774                   }
 775                 }
 776             }
 777             break;
 778
 779
 780                 /* UNQUOTEs RFC-2822 quoted-string and quoted-pair */
 781         case FT_LS_UNQUOTE:
 782             if (str) {
 783                 int m;
 784                 strncpy(buffer, str, sizeof(buffer));
 785                 /* strncpy doesn't NUL-terminate if it fills the buffer */
 786                 buffer[sizeof(buffer)-1] = '\0';
 787                 str = buffer;
 788
 789                 /* we will parse from buffer to buffer2 */
 790                 n = 0; /* n is the input position in str */
 791                 m = 0; /* m is the ouput position in buffer2 */
 792
 793                 while ( str[n] != '\0') {
 794                     switch ( str[n] ) {
 795                         case '\\':
 796                             n++;
 797                             if ( str[n] != '\0')
 798                                 buffer2[m++] = str[n++];
 799                             break;
 800                         case '"':
 801                             n++;
 802                             break;
 803                         default:
 804                             buffer2[m++] = str[n++];
 805                             break;
 806                         }
 807                 }
 808                 buffer2[m] = '\0';
 809                 str = buffer2;
 810             }
 811             break;
 812
 813         case FT_LOCALDATE:
 814             comp = fmt->f_comp;
 815             if ((t = comp->c_tws->tw_clock) == 0)
 816                 t = dmktime(comp->c_tws);
 817             tws = dlocaltime(&t);
 818             *comp->c_tws = *tws;
 819             break;
 820
 821         case FT_GMTDATE:
 822             comp = fmt->f_comp;
 823             if ((t = comp->c_tws->tw_clock) == 0)
 824                 t = dmktime(comp->c_tws);
 825             tws = dgmtime(&t);
 826             *comp->c_tws = *tws;
 827             break;
 828
 829         case FT_PARSEDATE:
 830             comp = fmt->f_comp;
 831             if (comp->c_flags & CF_PARSED)
 832                 break;
 833             if ((sp = comp->c_text) && (tws = dparsetime(sp))) {
 834                 *comp->c_tws = *tws;
 835                 comp->c_flags &= ~CF_TRUE;
 836             } else if ((comp->c_flags & CF_DATEFAB) == 0) {
 837                 memset ((char *) comp->c_tws, 0, sizeof *comp->c_tws);
 838                 comp->c_flags = CF_TRUE;
 839             }
 840             comp->c_flags |= CF_PARSED;
 841             break;
 842
 843         case FT_FORMATADDR:
 844             /* hook for custom address list formatting (see replsbr.c) */
 845             str = formataddr (savestr, str);
 846             break;
 847
 848         case FT_CONCATADDR:
 849             /* The same as formataddr, but doesn't do duplicate suppression */
 850             str = concataddr (savestr, str);
 851             break;
 852
 853         case FT_PUTADDR:
 854             /* output the str register as an address component,
 855              * splitting it into multiple lines if necessary.  The
 856              * value reg. contains the max line length.  The lit.
 857              * field may contain a string to prepend to the result
 858              * (e.g., "To: ")
 859              */
 860             {
 861             unsigned char *lp;
 862             char *lastb;
 863             int indent, wid, len;
 864
 865             lp = str;
 866             wid = value;
 867             len = strlen (str);
 868             sp = fmt->f_text;
 869             indent = strlen (sp);
 870             wid -= indent;
 871             if (wid <= 0) {
 872                 adios(NULL, "putaddr -- num register (%d) must be greater "
 873                             "than label width (%d)", value, indent);
 874             }
 875             while( (c = *sp++) && cp < ep)
 876                 *cp++ = c;
 877             while (len > wid) {
 878                 /* try to break at a comma; failing that, break at a
 879                  * space.
 880                  */
 881                 lastb = 0; sp = lp + wid;
 882                 while (sp > lp && (c = *--sp) != ',') {
 883                     if (! lastb && isspace(c))
 884                         lastb = sp - 1;
 885                 }
 886                 if (sp == lp) {
 887                     if (! (sp = lastb)) {
 888                         sp = lp + wid - 1;
 889                         while (*sp && *sp != ',' && !isspace(*sp))
 890                             sp++;
 891                         if (*sp != ',')
 892                             sp--;
 893                     }
 894                 }
 895                 len -= sp - lp + 1;
 896                 while (cp < ep && lp <= sp)
 897                     *cp++ = *lp++;
 898                 while (isspace(*lp))
 899                     lp++, len--;
 900                 if (*lp) {
 901                     if (cp < ep)
 902                         *cp++ = '\n';
 903                     for (i=indent; cp < ep && i > 0; i--)
 904                         *cp++ = ' ';
 905                 }
 906             }
 907             cpstripped (&cp, ep, lp);
 908             }
 909             break;
 910
 911         case FT_PARSEADDR:
 912             comp = fmt->f_comp;
 913             if (comp->c_flags & CF_PARSED)
 914                 break;
 915             if (comp->c_mn != &fmt_mnull)
 916                 mnfree (comp->c_mn);
 917             if ((sp = comp->c_text) && (sp = getname(sp)) &&
 918                 (mn = getm (sp, NULL, 0, fmt_norm, NULL))) {
 919                 comp->c_mn = mn;
 920                 while (getname(""))
 921                     ;
 922                 comp->c_flags |= CF_PARSED;
 923             } else {
 924                 while (getname(""))             /* XXX */
 925                     ;
 926                 comp->c_mn = &fmt_mnull;
 927             }
 928             break;
 929
 930         case FT_MYMBOX:
 931             /*
 932              * if there's no component, we say true.  Otherwise we
 933              * say "true" only if we can parse the address and it
 934              * matches one of our addresses.
 935              */
 936             comp = fmt->f_comp;
 937             if (comp->c_mn != &fmt_mnull)
 938                 mnfree (comp->c_mn);
 939             if ((sp = comp->c_text) && (sp = getname(sp)) &&
 940                 (mn = getm (sp, NULL, 0, AD_NAME, NULL))) {
 941                 comp->c_mn = mn;
 942                 if (ismymbox(mn))
 943                     comp->c_flags |= CF_TRUE;
 944                 else
 945                     comp->c_flags &= ~CF_TRUE;
 946                 while ((sp = getname(sp)))
 947                     if ((comp->c_flags & CF_TRUE) == 0 &&
 948                         (mn = getm (sp, NULL, 0, AD_NAME, NULL)))
 949                         if (ismymbox(mn))
 950                             comp->c_flags |= CF_TRUE;
 951             } else {
 952                 while (getname(""))             /* XXX */
 953                     ;
 954                 if (comp->c_text == 0)
 955                     comp->c_flags |= CF_TRUE;
 956                 else
 957                     comp->c_flags &= ~CF_TRUE;
 958                 comp->c_mn = &fmt_mnull;
 959             }
 960             break;
 961
 962         case FT_ADDTOSEQ:
 963 #ifdef LBL
 964             /* If we're working on a folder (as opposed to a file), add the
 965              * current msg to sequence given in literal field.  Don't
 966              * disturb string or value registers.
 967              */
 968             if (fmt_current_folder)
 969                     seq_addmsg(fmt_current_folder, fmt->f_text, dat[0], -1);
 970 #endif
 971             break;
 972         }
 973         fmt++;
 974     }
 975 #ifndef JLR
 976     finished:;
 977     if (cp[-1] != '\n')
 978         *cp++ = '\n';
 979     *cp   = 0;
 980     return ((struct format *)0);
 981 #else /* JLR */
 982     if (cp[-1] != '\n')
 983         *cp++ = '\n';
 984     while (fmt->f_type != FT_DONE)
 985         fmt++;
 986
 987     finished:;
 988     *cp = '\0';
 989     return (fmt->f_value ? ++fmt : (struct format *) 0);
 990
 991 #endif /* JLR */
 992 }