diplodocus.org Git - nmh/blob - uip/fmtdump.c

   1 /* fmtdump.c -- compile format file and dump out instructions
   2  *
   3  * This code is Copyright (c) 2002, by the authors of nmh.  See the
   4  * COPYRIGHT file in the root directory of the nmh distribution for
   5  * complete copyright information.
   6  */
   7
   8 #include <h/mh.h>
   9 #include <h/fmt_scan.h>
  10 #include <h/fmt_compile.h>
  11 #include <h/scansbr.h>
  12 #include <h/utils.h>
  13
  14 #define FMTDUMP_SWITCHES \
  15     X("form formatfile", 0, FORMSW) \
  16     X("format string", 5, FMTSW) \
  17     X("version", 0, VERSIONSW) \
  18     X("help", 0, HELPSW) \
  19
  20 #define X(sw, minchars, id) id,
  21 DEFINE_SWITCH_ENUM(FMTDUMP);
  22 #undef X
  23
  24 #define X(sw, minchars, id) { sw, minchars, id },
  25 DEFINE_SWITCH_ARRAY(FMTDUMP, switches);
  26 #undef X
  27
  28 /* for assignlabel */
  29 static struct format *lvec[128];
  30 static int lused = 0;
  31
  32 /*
  33  * static prototypes
  34  */
  35 static void fmt_dump (struct format *);
  36 static void dumpone(struct format *);
  37 static int findlabel(struct format *);
  38 static void assignlabel(struct format *);
  39 static char *f_typestr(int);
  40 static char *c_typestr(int);
  41 static char *c_flagsstr(int);
  42 static void litputs(char *);
  43 static void litputc(char);
  44
  45
  46 int
  47 main (int argc, char **argv)
  48 {
  49     char *cp, *form = NULL, *format = NULL;
  50     char buf[BUFSIZ], *nfs, **argp, **arguments;
  51     struct format *fmt;
  52
  53     if (nmh_init(argv[0], 2)) { return 1; }
  54
  55     arguments = getarguments (invo_name, argc, argv, 1);
  56     argp = arguments;
  57
  58     while ((cp = *argp++)) {
  59         if (*cp == '-') {
  60             switch (smatch (++cp, switches)) {
  61                 case AMBIGSW:
  62                     ambigsw (cp, switches);
  63                     done (1);
  64                 case UNKWNSW:
  65                     adios (NULL, "-%s unknown", cp);
  66
  67                 case HELPSW:
  68                     snprintf (buf, sizeof(buf), "%s [switches]", invo_name);
  69                     print_help (buf, switches, 1);
  70                     done (0);
  71                 case VERSIONSW:
  72                     print_version(invo_name);
  73                     done (0);
  74
  75                 case FORMSW:
  76                     if (!(form = *argp++) || *form == '-')
  77                         adios (NULL, "missing argument to %s", argp[-2]);
  78                     format = NULL;
  79                     continue;
  80                 case FMTSW:
  81                     if (!(format = *argp++) || *format == '-')
  82                         adios (NULL, "missing argument to %s", argp[-2]);
  83                     form = NULL;
  84                     continue;
  85
  86             }
  87         }
  88         if (form)
  89             adios (NULL, "only one form at a time!");
  90         form = cp;
  91     }
  92
  93     /*
  94      * Get new format string.  Must be before chdir().
  95      */
  96     nfs = new_fs (form, format, FORMAT);
  97     (void) fmt_compile(nfs, &fmt, 1);
  98
  99     fmt_dump(fmt);
 100
 101     fmt_free(fmt, 1);
 102
 103     done(0);
 104     return 1;
 105 }
 106
 107 static void
 108 fmt_dump (struct format *fmth)
 109 {
 110         int i;
 111         struct format *fmt, *addr;
 112
 113         /* Assign labels */
 114         for (fmt = fmth; fmt; ++fmt) {
 115                 i = fmt->f_type;
 116                 if (i == FT_IF_S ||
 117                     i == FT_IF_S_NULL ||
 118                     i == FT_IF_V_EQ ||
 119                     i == FT_IF_V_NE ||
 120                     i == FT_IF_V_GT ||
 121                     i == FT_IF_MATCH ||
 122                     i == FT_IF_AMATCH ||
 123                     i == FT_GOTO) {
 124                         addr = fmt + fmt->f_skip;
 125                         if (findlabel(addr) < 0)
 126                                 assignlabel(addr);
 127                 }
 128                 if (fmt->f_type == FT_DONE && fmt->f_value == 0)
 129                         break;
 130         }
 131
 132         /* Dump them out! */
 133         for (fmt = fmth; fmt; ++fmt) {
 134                 dumpone(fmt);
 135                 if (fmt->f_type == FT_DONE && fmt->f_value == 0)
 136                         break;
 137         }
 138 }
 139
 140 static void
 141 dumpone(struct format *fmt)
 142 {
 143         int i;
 144
 145         if ((i = findlabel(fmt)) >= 0)
 146                 printf("L%d:", i);
 147         putchar('\t');
 148
 149         fputs(f_typestr((int)fmt->f_type), stdout);
 150
 151         switch (fmt->f_type) {
 152
 153         case FT_COMP:
 154         case FT_LS_COMP:
 155         case FT_LV_COMPFLAG:
 156         case FT_LV_COMP:
 157                 printf(", comp ");
 158                 litputs(fmt->f_comp->c_name);
 159                 if (fmt->f_comp->c_type)
 160                         printf(", c_type %s", c_typestr(fmt->f_comp->c_type));
 161                 if (fmt->f_comp->c_flags)
 162                         printf(", c_flags %s", c_flagsstr(fmt->f_comp->c_flags));
 163                 break;
 164
 165         case FT_LV_SEC:
 166         case FT_LV_MIN:
 167         case FT_LV_HOUR:
 168         case FT_LV_MDAY:
 169         case FT_LV_MON:
 170         case FT_LS_MONTH:
 171         case FT_LS_LMONTH:
 172         case FT_LS_ZONE:
 173         case FT_LV_YEAR:
 174         case FT_LV_WDAY:
 175         case FT_LS_DAY:
 176         case FT_LS_WEEKDAY:
 177         case FT_LV_YDAY:
 178         case FT_LV_ZONE:
 179         case FT_LV_CLOCK:
 180         case FT_LV_RCLOCK:
 181         case FT_LV_DAYF:
 182         case FT_LV_ZONEF:
 183         case FT_LV_DST:
 184         case FT_LS_822DATE:
 185         case FT_LS_PRETTY:
 186         case FT_LOCALDATE:
 187         case FT_GMTDATE:
 188         case FT_PARSEDATE:
 189                 printf(", c_name ");
 190                 litputs(fmt->f_comp->c_name);
 191                 if (fmt->f_comp->c_type)
 192                         printf(", c_type %s", c_typestr(fmt->f_comp->c_type));
 193                 if (fmt->f_comp->c_flags)
 194                         printf(", c_flags %s", c_flagsstr(fmt->f_comp->c_flags));
 195                 break;
 196
 197         case FT_LS_ADDR:
 198         case FT_LS_PERS:
 199         case FT_LS_MBOX:
 200         case FT_LS_HOST:
 201         case FT_LS_PATH:
 202         case FT_LS_GNAME:
 203         case FT_LS_NOTE:
 204         case FT_LS_822ADDR:
 205         case FT_LV_HOSTTYPE:
 206         case FT_LV_INGRPF:
 207         case FT_LV_NOHOSTF:
 208         case FT_LS_FRIENDLY:
 209         case FT_PARSEADDR:
 210         case FT_MYMBOX:
 211         case FT_GETMYMBOX:
 212         case FT_GETMYADDR:
 213                 printf(", c_name ");
 214                 litputs(fmt->f_comp->c_name);
 215                 if (fmt->f_comp->c_type)
 216                         printf(", c_type %s", c_typestr(fmt->f_comp->c_type));
 217                 if (fmt->f_comp->c_flags)
 218                         printf(", c_flags %s", c_flagsstr(fmt->f_comp->c_flags));
 219                 break;
 220
 221         case FT_COMPF:
 222                 printf(", width %d, fill '", fmt->f_width);
 223                 litputc(fmt->f_fill);
 224                 printf("' name ");
 225                 litputs(fmt->f_comp->c_name);
 226                 if (fmt->f_comp->c_type)
 227                         printf(", c_type %s", c_typestr(fmt->f_comp->c_type));
 228                 if (fmt->f_comp->c_flags)
 229                         printf(", c_flags %s", c_flagsstr(fmt->f_comp->c_flags));
 230                 break;
 231
 232         case FT_STRF:
 233         case FT_NUMF:
 234                 printf(", width %d, fill '", fmt->f_width);
 235                 litputc(fmt->f_fill);
 236                 putchar('\'');
 237                 break;
 238
 239         case FT_LIT:
 240                 putchar(' ');
 241                 litputs(fmt->f_text);
 242                 break;
 243
 244         case FT_LITF:
 245                 printf(", width %d, fill '", fmt->f_width);
 246                 litputc(fmt->f_fill);
 247                 printf("' ");
 248                 litputs(fmt->f_text);
 249                 break;
 250
 251         case FT_CHAR:
 252                 putchar(' ');
 253                 putchar('\'');
 254                 litputc(fmt->f_char);
 255                 putchar('\'');
 256                 break;
 257
 258
 259         case FT_IF_S:
 260         case FT_IF_S_NULL:
 261         case FT_IF_MATCH:
 262         case FT_IF_AMATCH:
 263                 printf(" continue else goto");
 264                 /* FALLTHRU */
 265         case FT_GOTO:
 266                 i = findlabel(fmt + fmt->f_skip);
 267                 printf(" L%d", i);
 268                 break;
 269
 270         case FT_IF_V_EQ:
 271         case FT_IF_V_NE:
 272         case FT_IF_V_GT:
 273                 i = findlabel(fmt + fmt->f_skip);
 274                 printf(" %d continue else goto L%d", fmt->f_value, i);
 275                 break;
 276
 277         case FT_V_EQ:
 278         case FT_V_NE:
 279         case FT_V_GT:
 280         case FT_LV_LIT:
 281         case FT_LV_PLUS_L:
 282         case FT_LV_MINUS_L:
 283         case FT_LV_MULTIPLY_L:
 284         case FT_LV_DIVIDE_L:
 285         case FT_LV_MODULO_L:
 286                 printf(" value %d", fmt->f_value);
 287                 break;
 288
 289         case FT_LS_LIT:
 290                 printf(" str ");
 291                 litputs(fmt->f_text);
 292                 break;
 293
 294         case FT_LS_GETENV:
 295                 printf(" getenv ");
 296                 litputs(fmt->f_text);
 297                 break;
 298
 299         case FT_LS_DECODECOMP:
 300                 printf(", comp ");
 301                 litputs(fmt->f_comp->c_name);
 302                 break;
 303
 304         case FT_LS_DECODE:
 305                 break;
 306
 307         case FT_LS_TRIM:
 308                 printf(", width %d", fmt->f_width);
 309                 break;
 310
 311         case FT_LV_DAT:
 312                 printf(", value dat[%d]", fmt->f_value);
 313                 break;
 314         }
 315         putchar('\n');
 316 }
 317
 318 static int
 319 findlabel(struct format *addr)
 320 {
 321         int i;
 322
 323         for (i = 0; i < lused; ++i)
 324                 if (addr == lvec[i])
 325                         return(i);
 326         return(-1);
 327 }
 328
 329 static void
 330 assignlabel(struct format *addr)
 331 {
 332         lvec[lused++] = addr;
 333 }
 334
 335 static char *
 336 f_typestr(int t)
 337 {
 338         static char buf[32];
 339
 340         switch (t) {
 341         case FT_COMP: return "COMP";
 342         case FT_COMPF: return "COMPF";
 343         case FT_LIT: return "LIT";
 344         case FT_LITF: return "LITF";
 345         case FT_CHAR: return "CHAR";
 346         case FT_NUM: return "NUM";
 347         case FT_NUMF: return "NUMF";
 348         case FT_STR: return "STR";
 349         case FT_STRF: return "STRF";
 350         case FT_STRFW: return "STRFW";
 351         case FT_STRLIT: return "STRLIT";
 352         case FT_STRLITZ: return "STRLITZ";
 353         case FT_PUTADDR: return "PUTADDR";
 354         case FT_LS_COMP: return "LS_COMP";
 355         case FT_LS_LIT: return "LS_LIT";
 356         case FT_LS_GETENV: return "LS_GETENV";
 357         case FT_LS_CFIND: return "LS_CFIND";
 358         case FT_LS_DECODECOMP: return "LS_DECODECOMP";
 359         case FT_LS_DECODE: return "LS_DECODE";
 360         case FT_LS_TRIM: return "LS_TRIM";
 361         case FT_LV_COMP: return "LV_COMP";
 362         case FT_LV_COMPFLAG: return "LV_COMPFLAG";
 363         case FT_LV_LIT: return "LV_LIT";
 364         case FT_LV_DAT: return "LV_DAT";
 365         case FT_LV_STRLEN: return "LV_STRLEN";
 366         case FT_LV_PLUS_L: return "LV_PLUS_L";
 367         case FT_LV_MINUS_L: return "LV_MINUS_L";
 368         case FT_LV_MULTIPLY_L: return "LV_MULTIPLY_L";
 369         case FT_LV_DIVIDE_L: return "LV_DIVIDE_L";
 370         case FT_LV_MODULO_L: return "LV_MODULO_L";
 371         case FT_LV_CHAR_LEFT: return "LV_CHAR_LEFT";
 372         case FT_LS_MONTH: return "LS_MONTH";
 373         case FT_LS_LMONTH: return "LS_LMONTH";
 374         case FT_LS_ZONE: return "LS_ZONE";
 375         case FT_LS_DAY: return "LS_DAY";
 376         case FT_LS_WEEKDAY: return "LS_WEEKDAY";
 377         case FT_LS_822DATE: return "LS_822DATE";
 378         case FT_LS_PRETTY: return "LS_PRETTY";
 379         case FT_LS_KILO: return "LS_KILO";
 380         case FT_LS_KIBI: return "LS_KIBI";
 381         case FT_LV_SEC: return "LV_SEC";
 382         case FT_LV_MIN: return "LV_MIN";
 383         case FT_LV_HOUR: return "LV_HOUR";
 384         case FT_LV_MDAY: return "LV_MDAY";
 385         case FT_LV_MON: return "LV_MON";
 386         case FT_LV_YEAR: return "LV_YEAR";
 387         case FT_LV_YDAY: return "LV_YDAY";
 388         case FT_LV_WDAY: return "LV_WDAY";
 389         case FT_LV_ZONE: return "LV_ZONE";
 390         case FT_LV_CLOCK: return "LV_CLOCK";
 391         case FT_LV_RCLOCK: return "LV_RCLOCK";
 392         case FT_LV_DAYF: return "LV_DAYF";
 393         case FT_LV_DST: return "LV_DST";
 394         case FT_LV_ZONEF: return "LV_ZONEF";
 395         case FT_LS_PERS: return "LS_PERS";
 396         case FT_LS_MBOX: return "LS_MBOX";
 397         case FT_LS_HOST: return "LS_HOST";
 398         case FT_LS_PATH: return "LS_PATH";
 399         case FT_LS_GNAME: return "LS_GNAME";
 400         case FT_LS_NOTE: return "LS_NOTE";
 401         case FT_LS_ADDR: return "LS_ADDR";
 402         case FT_LS_822ADDR: return "LS_822ADDR";
 403         case FT_LS_FRIENDLY: return "LS_FRIENDLY";
 404         case FT_LV_HOSTTYPE: return "LV_HOSTTYPE";
 405         case FT_LV_INGRPF: return "LV_INGRPF";
 406         case FT_LS_UNQUOTE: return "LS_UNQUOTE";
 407         case FT_LV_NOHOSTF: return "LV_NOHOSTF";
 408         case FT_LOCALDATE: return "LOCALDATE";
 409         case FT_GMTDATE: return "GMTDATE";
 410         case FT_PARSEDATE: return "PARSEDATE";
 411         case FT_PARSEADDR: return "PARSEADDR";
 412         case FT_FORMATADDR: return "FORMATADDR";
 413         case FT_CONCATADDR: return "CONCATADDR";
 414         case FT_MYMBOX: return "MYMBOX";
 415         case FT_GETMYMBOX: return "GETMYMBOX";
 416         case FT_GETMYADDR: return "GETMYADDR";
 417         case FT_SAVESTR: return "SAVESTR";
 418         case FT_DONE: return "DONE";
 419         case FT_PAUSE: return "PAUSE";
 420         case FT_NOP: return "NOP";
 421         case FT_GOTO: return "GOTO";
 422         case FT_IF_S_NULL: return "IF_S_NULL";
 423         case FT_IF_S: return "IF_S";
 424         case FT_IF_V_EQ: return "IF_V_EQ";
 425         case FT_IF_V_NE: return "IF_V_NE";
 426         case FT_IF_V_GT: return "IF_V_GT";
 427         case FT_IF_MATCH: return "IF_MATCH";
 428         case FT_IF_AMATCH: return "IF_AMATCH";
 429         case FT_S_NULL: return "S_NULL";
 430         case FT_S_NONNULL: return "S_NONNULL";
 431         case FT_V_EQ: return "V_EQ";
 432         case FT_V_NE: return "V_NE";
 433         case FT_V_GT: return "V_GT";
 434         case FT_V_MATCH: return "V_MATCH";
 435         case FT_V_AMATCH: return "V_AMATCH";
 436         default:
 437                 snprintf(buf, sizeof buf, "/* ??? #%d */", t);
 438                 return(buf);
 439         }
 440 }
 441
 442 #define FNORD(v, s) if (t & (v)) { \
 443         if (i++ > 0) \
 444                 strcat(buf, "|"); \
 445         strcat(buf, s); }
 446
 447 static char *
 448 c_typestr(int t)
 449 {
 450         int i;
 451         static char buf[64];
 452
 453         buf[0] = '\0';
 454         if (t & ~(CT_ADDR|CT_DATE))
 455                 snprintf(buf, sizeof buf, "0x%x ", t);
 456         strcat(buf, "<");
 457         i = 0;
 458         FNORD(CT_ADDR, "ADDR");
 459         FNORD(CT_DATE, "DATE");
 460         strcat(buf, ">");
 461         return(buf);
 462 }
 463
 464 static char *
 465 c_flagsstr(int t)
 466 {
 467         int i;
 468         static char buf[64];
 469
 470         buf[0] = '\0';
 471         if (t & ~(CF_TRUE|CF_PARSED|CF_DATEFAB|CF_TRIMMED))
 472                 snprintf(buf, sizeof buf, "0x%x ", t);
 473         strcat(buf, "<");
 474         i = 0;
 475         FNORD(CF_TRUE, "TRUE");
 476         FNORD(CF_PARSED, "PARSED");
 477         FNORD(CF_DATEFAB, "DATEFAB");
 478         FNORD(CF_TRIMMED, "TRIMMED");
 479         strcat(buf, ">");
 480         return(buf);
 481 }
 482 #undef FNORD
 483
 484 static void
 485 litputs(char *s)
 486 {
 487         if (s) {
 488                 putchar('"');
 489                 while (*s)
 490                         litputc(*s++);
 491                 putchar('"');
 492         } else
 493                 fputs("<nil>", stdout);
 494 }
 495
 496 static void
 497 litputc(char c)
 498 {
 499         if (c & ~ 0177) {
 500                 putchar('M');
 501                 putchar('-');
 502                 c &= 0177;
 503         }
 504         if (c < 0x20 || c == 0177) {
 505                 if (c == '\b') {
 506                         putchar('\\');
 507                         putchar('b');
 508                 } else if (c == '\f') {
 509                         putchar('\\');
 510                         putchar('f');
 511                 } else if (c == '\n') {
 512                         putchar('\\');
 513                         putchar('n');
 514                 } else if (c == '\r') {
 515                         putchar('\\');
 516                         putchar('r');
 517                 } else if (c == '\t') {
 518                         putchar('\\');
 519                         putchar('t');
 520                 } else {
 521                         putchar('^');
 522                         putchar(c ^ 0x40);      /* DEL to ?, others to alpha */
 523                 }
 524         } else
 525                 putchar(c);
 526 }