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         else
  91             form = cp;
  92     }
  93
  94     /*
  95      * Get new format string.  Must be before chdir().
  96      */
  97     nfs = new_fs (form, format, FORMAT);
  98     (void) fmt_compile(nfs, &fmt, 1);
  99
 100     fmt_dump(fmt);
 101
 102     fmt_free(fmt, 1);
 103
 104     done(0);
 105     return 1;
 106 }
 107
 108 static void
 109 fmt_dump (struct format *fmth)
 110 {
 111         int i;
 112         struct format *fmt, *addr;
 113
 114         /* Assign labels */
 115         for (fmt = fmth; fmt; ++fmt) {
 116                 i = fmt->f_type;
 117                 if (i == FT_IF_S ||
 118                     i == FT_IF_S_NULL ||
 119                     i == FT_IF_V_EQ ||
 120                     i == FT_IF_V_NE ||
 121                     i == FT_IF_V_GT ||
 122                     i == FT_IF_MATCH ||
 123                     i == FT_IF_AMATCH ||
 124                     i == FT_GOTO) {
 125                         addr = fmt + fmt->f_skip;
 126                         if (findlabel(addr) < 0)
 127                                 assignlabel(addr);
 128                 }
 129                 if (fmt->f_type == FT_DONE && fmt->f_value == 0)
 130                         break;
 131         }
 132
 133         /* Dump them out! */
 134         for (fmt = fmth; fmt; ++fmt) {
 135                 dumpone(fmt);
 136                 if (fmt->f_type == FT_DONE && fmt->f_value == 0)
 137                         break;
 138         }
 139 }
 140
 141 static void
 142 dumpone(struct format *fmt)
 143 {
 144         int i;
 145
 146         if ((i = findlabel(fmt)) >= 0)
 147                 printf("L%d:", i);
 148         putchar('\t');
 149
 150         fputs(f_typestr((int)fmt->f_type), stdout);
 151
 152         switch (fmt->f_type) {
 153
 154         case FT_COMP:
 155         case FT_LS_COMP:
 156         case FT_LV_COMPFLAG:
 157         case FT_LV_COMP:
 158                 printf(", comp ");
 159                 litputs(fmt->f_comp->c_name);
 160                 if (fmt->f_comp->c_type)
 161                         printf(", c_type %s", c_typestr(fmt->f_comp->c_type));
 162                 if (fmt->f_comp->c_flags)
 163                         printf(", c_flags %s", c_flagsstr(fmt->f_comp->c_flags));
 164                 break;
 165
 166         case FT_LV_SEC:
 167         case FT_LV_MIN:
 168         case FT_LV_HOUR:
 169         case FT_LV_MDAY:
 170         case FT_LV_MON:
 171         case FT_LS_MONTH:
 172         case FT_LS_LMONTH:
 173         case FT_LS_ZONE:
 174         case FT_LV_YEAR:
 175         case FT_LV_WDAY:
 176         case FT_LS_DAY:
 177         case FT_LS_WEEKDAY:
 178         case FT_LV_YDAY:
 179         case FT_LV_ZONE:
 180         case FT_LV_CLOCK:
 181         case FT_LV_RCLOCK:
 182         case FT_LV_DAYF:
 183         case FT_LV_ZONEF:
 184         case FT_LV_DST:
 185         case FT_LS_822DATE:
 186         case FT_LS_PRETTY:
 187         case FT_LOCALDATE:
 188         case FT_GMTDATE:
 189         case FT_PARSEDATE:
 190                 printf(", c_name ");
 191                 litputs(fmt->f_comp->c_name);
 192                 if (fmt->f_comp->c_type)
 193                         printf(", c_type %s", c_typestr(fmt->f_comp->c_type));
 194                 if (fmt->f_comp->c_flags)
 195                         printf(", c_flags %s", c_flagsstr(fmt->f_comp->c_flags));
 196                 break;
 197
 198         case FT_LS_ADDR:
 199         case FT_LS_PERS:
 200         case FT_LS_MBOX:
 201         case FT_LS_HOST:
 202         case FT_LS_PATH:
 203         case FT_LS_GNAME:
 204         case FT_LS_NOTE:
 205         case FT_LS_822ADDR:
 206         case FT_LV_HOSTTYPE:
 207         case FT_LV_INGRPF:
 208         case FT_LV_NOHOSTF:
 209         case FT_LS_FRIENDLY:
 210         case FT_PARSEADDR:
 211         case FT_MYMBOX:
 212         case FT_GETMYMBOX:
 213         case FT_GETMYADDR:
 214                 printf(", c_name ");
 215                 litputs(fmt->f_comp->c_name);
 216                 if (fmt->f_comp->c_type)
 217                         printf(", c_type %s", c_typestr(fmt->f_comp->c_type));
 218                 if (fmt->f_comp->c_flags)
 219                         printf(", c_flags %s", c_flagsstr(fmt->f_comp->c_flags));
 220                 break;
 221
 222         case FT_COMPF:
 223                 printf(", width %d, fill '", fmt->f_width);
 224                 litputc(fmt->f_fill);
 225                 printf("' name ");
 226                 litputs(fmt->f_comp->c_name);
 227                 if (fmt->f_comp->c_type)
 228                         printf(", c_type %s", c_typestr(fmt->f_comp->c_type));
 229                 if (fmt->f_comp->c_flags)
 230                         printf(", c_flags %s", c_flagsstr(fmt->f_comp->c_flags));
 231                 break;
 232
 233         case FT_STRF:
 234         case FT_NUMF:
 235                 printf(", width %d, fill '", fmt->f_width);
 236                 litputc(fmt->f_fill);
 237                 putchar('\'');
 238                 break;
 239
 240         case FT_LIT:
 241                 putchar(' ');
 242                 litputs(fmt->f_text);
 243                 break;
 244
 245         case FT_LITF:
 246                 printf(", width %d, fill '", fmt->f_width);
 247                 litputc(fmt->f_fill);
 248                 printf("' ");
 249                 litputs(fmt->f_text);
 250                 break;
 251
 252         case FT_CHAR:
 253                 putchar(' ');
 254                 putchar('\'');
 255                 litputc(fmt->f_char);
 256                 putchar('\'');
 257                 break;
 258
 259
 260         case FT_IF_S:
 261         case FT_IF_S_NULL:
 262         case FT_IF_MATCH:
 263         case FT_IF_AMATCH:
 264                 printf(" continue else goto");
 265                 /* FALLTHRU */
 266         case FT_GOTO:
 267                 i = findlabel(fmt + fmt->f_skip);
 268                 printf(" L%d", i);
 269                 break;
 270
 271         case FT_IF_V_EQ:
 272         case FT_IF_V_NE:
 273         case FT_IF_V_GT:
 274                 i = findlabel(fmt + fmt->f_skip);
 275                 printf(" %d continue else goto L%d", fmt->f_value, i);
 276                 break;
 277
 278         case FT_V_EQ:
 279         case FT_V_NE:
 280         case FT_V_GT:
 281         case FT_LV_LIT:
 282         case FT_LV_PLUS_L:
 283         case FT_LV_MINUS_L:
 284         case FT_LV_MULTIPLY_L:
 285         case FT_LV_DIVIDE_L:
 286         case FT_LV_MODULO_L:
 287                 printf(" value %d", fmt->f_value);
 288                 break;
 289
 290         case FT_LS_LIT:
 291                 printf(" str ");
 292                 litputs(fmt->f_text);
 293                 break;
 294
 295         case FT_LS_GETENV:
 296                 printf(" getenv ");
 297                 litputs(fmt->f_text);
 298                 break;
 299
 300         case FT_LS_DECODECOMP:
 301                 printf(", comp ");
 302                 litputs(fmt->f_comp->c_name);
 303                 break;
 304
 305         case FT_LS_DECODE:
 306                 break;
 307
 308         case FT_LS_TRIM:
 309                 printf(", width %d", fmt->f_width);
 310                 break;
 311
 312         case FT_LV_DAT:
 313                 printf(", value dat[%d]", fmt->f_value);
 314                 break;
 315         }
 316         putchar('\n');
 317 }
 318
 319 static int
 320 findlabel(struct format *addr)
 321 {
 322         int i;
 323
 324         for (i = 0; i < lused; ++i)
 325                 if (addr == lvec[i])
 326                         return(i);
 327         return(-1);
 328 }
 329
 330 static void
 331 assignlabel(struct format *addr)
 332 {
 333         lvec[lused++] = addr;
 334 }
 335
 336 static char *
 337 f_typestr(int t)
 338 {
 339         static char buf[32];
 340
 341         switch (t) {
 342         case FT_COMP: return("COMP");
 343         case FT_COMPF: return("COMPF");
 344         case FT_LIT: return("LIT");
 345         case FT_LITF: return("LITF");
 346         case FT_CHAR: return("CHAR");
 347         case FT_NUM: return("NUM");
 348         case FT_NUMF: return("NUMF");
 349         case FT_STR: return("STR");
 350         case FT_STRF: return("STRF");
 351         case FT_STRFW: return("STRFW");
 352         case FT_PUTADDR: return("PUTADDR");
 353         case FT_STRLIT: return("STRLIT");
 354         case FT_STRLITZ: return("STRLITZ");
 355         case FT_LS_COMP: return("LS_COMP");
 356         case FT_LS_LIT: return("LS_LIT");
 357         case FT_LS_GETENV: return("LS_GETENV");
 358         case FT_LS_DECODECOMP: return("FT_LS_DECODECOMP");
 359         case FT_LS_DECODE: return("FT_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_KILO: return("LS_KILO");
 373         case FT_LS_KIBI: return("LS_KIBI");
 374         case FT_LS_MONTH: return("LS_MONTH");
 375         case FT_LS_LMONTH: return("LS_LMONTH");
 376         case FT_LS_ZONE: return("LS_ZONE");
 377         case FT_LS_DAY: return("LS_DAY");
 378         case FT_LS_WEEKDAY: return("LS_WEEKDAY");
 379         case FT_LS_822DATE: return("LS_822DATE");
 380         case FT_LS_PRETTY: return("LS_PRETTY");
 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_ADDR: return("LS_ADDR");
 396         case FT_LS_PERS: return("LS_PERS");
 397         case FT_LS_MBOX: return("LS_MBOX");
 398         case FT_LS_HOST: return("LS_HOST");
 399         case FT_LS_PATH: return("LS_PATH");
 400         case FT_LS_GNAME: return("LS_GNAME");
 401         case FT_LS_NOTE: return("LS_NOTE");
 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_PAUSE: return ("PAUSE");
 419         case FT_DONE: return("DONE");
 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 }