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 "sbr/error.h"
  10 #include <h/fmt_scan.h>
  11 #include <h/fmt_compile.h>
  12 #include <h/scansbr.h>
  13 #include "h/done.h"
  14 #include <h/utils.h>
  15
  16 #define FMTDUMP_SWITCHES \
  17     X("form formatfile", 0, FORMSW) \
  18     X("format string", 5, FMTSW) \
  19     X("version", 0, VERSIONSW) \
  20     X("help", 0, HELPSW) \
  21
  22 #define X(sw, minchars, id) id,
  23 DEFINE_SWITCH_ENUM(FMTDUMP);
  24 #undef X
  25
  26 #define X(sw, minchars, id) { sw, minchars, id },
  27 DEFINE_SWITCH_ARRAY(FMTDUMP, switches);
  28 #undef X
  29
  30 /* for assignlabel */
  31 static struct format *lvec[128];
  32 static int lused = 0;
  33
  34 /*
  35  * static prototypes
  36  */
  37 static void fmt_dump (struct format *);
  38 static void dumpone(struct format *);
  39 static int findlabel(struct format *);
  40 static void assignlabel(struct format *);
  41 static char *f_typestr(int);
  42 static char *c_typestr(int);
  43 static char *c_flagsstr(int);
  44 static void litputs(char *);
  45 static void litputc(char);
  46
  47
  48 int
  49 main (int argc, char **argv)
  50 {
  51     char *cp, *form = NULL, *format = NULL;
  52     char buf[BUFSIZ], *nfs, **argp, **arguments;
  53     struct format *fmt;
  54
  55     if (nmh_init(argv[0], true, false)) { return 1; }
  56
  57     arguments = getarguments (invo_name, argc, argv, 1);
  58     argp = arguments;
  59
  60     while ((cp = *argp++)) {
  61         if (*cp == '-') {
  62             switch (smatch (++cp, switches)) {
  63                 case AMBIGSW:
  64                     ambigsw (cp, switches);
  65                     done (1);
  66                 case UNKWNSW:
  67                     die("-%s unknown", cp);
  68
  69                 case HELPSW:
  70                     snprintf (buf, sizeof(buf), "%s [switches]", invo_name);
  71                     print_help (buf, switches, 1);
  72                     done (0);
  73                 case VERSIONSW:
  74                     print_version(invo_name);
  75                     done (0);
  76
  77                 case FORMSW:
  78                     if (!(form = *argp++) || *form == '-')
  79                         die("missing argument to %s", argp[-2]);
  80                     format = NULL;
  81                     continue;
  82                 case FMTSW:
  83                     if (!(format = *argp++) || *format == '-')
  84                         die("missing argument to %s", argp[-2]);
  85                     form = NULL;
  86                     continue;
  87
  88             }
  89         }
  90         if (form)
  91             die("only one form at a time!");
  92         form = cp;
  93     }
  94
  95     /*
  96      * Get new format string.  Must be before chdir().
  97      */
  98     nfs = new_fs (form, format, FORMAT);
  99     (void) fmt_compile(nfs, &fmt, 1);
 100
 101     fmt_dump(fmt);
 102
 103     fmt_free(fmt, 1);
 104
 105     done(0);
 106     return 1;
 107 }
 108
 109 static void
 110 fmt_dump (struct format *fmth)
 111 {
 112         int i;
 113         struct format *fmt, *addr;
 114
 115         /* Assign labels */
 116         for (fmt = fmth; fmt; ++fmt) {
 117                 i = fmt->f_type;
 118                 if (i == FT_IF_S ||
 119                     i == FT_IF_S_NULL ||
 120                     i == FT_IF_V_EQ ||
 121                     i == FT_IF_V_NE ||
 122                     i == FT_IF_V_GT ||
 123                     i == FT_IF_MATCH ||
 124                     i == FT_IF_AMATCH ||
 125                     i == FT_GOTO) {
 126                         addr = fmt + fmt->f_skip;
 127                         if (findlabel(addr) < 0)
 128                                 assignlabel(addr);
 129                 }
 130                 if (fmt->f_type == FT_DONE && fmt->f_value == 0)
 131                         break;
 132         }
 133
 134         /* Dump them out! */
 135         for (fmt = fmth; fmt; ++fmt) {
 136                 dumpone(fmt);
 137                 if (fmt->f_type == FT_DONE && fmt->f_value == 0)
 138                         break;
 139         }
 140 }
 141
 142 static void
 143 dumpone(struct format *fmt)
 144 {
 145         int i;
 146
 147         if ((i = findlabel(fmt)) >= 0)
 148                 printf("L%d:", i);
 149         putchar('\t');
 150
 151         fputs(f_typestr((int)fmt->f_type), stdout);
 152
 153         switch (fmt->f_type) {
 154
 155         case FT_COMP:
 156         case FT_LS_COMP:
 157         case FT_LV_COMPFLAG:
 158         case FT_LV_COMP:
 159                 fputs(", comp ", stdout);
 160                 litputs(fmt->f_comp->c_name);
 161                 if (fmt->f_comp->c_type)
 162                         printf(", c_type %s", c_typestr(fmt->f_comp->c_type));
 163                 if (fmt->f_comp->c_flags)
 164                         printf(", c_flags %s", c_flagsstr(fmt->f_comp->c_flags));
 165                 break;
 166
 167         case FT_LV_SEC:
 168         case FT_LV_MIN:
 169         case FT_LV_HOUR:
 170         case FT_LV_MDAY:
 171         case FT_LV_MON:
 172         case FT_LS_MONTH:
 173         case FT_LS_LMONTH:
 174         case FT_LS_ZONE:
 175         case FT_LV_YEAR:
 176         case FT_LV_WDAY:
 177         case FT_LS_DAY:
 178         case FT_LS_WEEKDAY:
 179         case FT_LV_YDAY:
 180         case FT_LV_ZONE:
 181         case FT_LV_CLOCK:
 182         case FT_LV_RCLOCK:
 183         case FT_LV_DAYF:
 184         case FT_LV_ZONEF:
 185         case FT_LV_DST:
 186         case FT_LS_822DATE:
 187         case FT_LS_PRETTY:
 188         case FT_LOCALDATE:
 189         case FT_GMTDATE:
 190         case FT_PARSEDATE:
 191                 fputs(", c_name ", stdout);
 192                 litputs(fmt->f_comp->c_name);
 193                 if (fmt->f_comp->c_type)
 194                         printf(", c_type %s", c_typestr(fmt->f_comp->c_type));
 195                 if (fmt->f_comp->c_flags)
 196                         printf(", c_flags %s", c_flagsstr(fmt->f_comp->c_flags));
 197                 break;
 198
 199         case FT_LS_ADDR:
 200         case FT_LS_PERS:
 201         case FT_LS_MBOX:
 202         case FT_LS_HOST:
 203         case FT_LS_PATH:
 204         case FT_LS_GNAME:
 205         case FT_LS_NOTE:
 206         case FT_LS_822ADDR:
 207         case FT_LV_HOSTTYPE:
 208         case FT_LV_INGRPF:
 209         case FT_LV_NOHOSTF:
 210         case FT_LS_FRIENDLY:
 211         case FT_PARSEADDR:
 212         case FT_MYMBOX:
 213         case FT_GETMYMBOX:
 214         case FT_GETMYADDR:
 215                 fputs(", c_name ", stdout);
 216                 litputs(fmt->f_comp->c_name);
 217                 if (fmt->f_comp->c_type)
 218                         printf(", c_type %s", c_typestr(fmt->f_comp->c_type));
 219                 if (fmt->f_comp->c_flags)
 220                         printf(", c_flags %s", c_flagsstr(fmt->f_comp->c_flags));
 221                 break;
 222
 223         case FT_COMPF:
 224                 printf(", width %d, fill '", fmt->f_width);
 225                 litputc(fmt->f_fill);
 226                 fputs("' name ", stdout);
 227                 litputs(fmt->f_comp->c_name);
 228                 if (fmt->f_comp->c_type)
 229                         printf(", c_type %s", c_typestr(fmt->f_comp->c_type));
 230                 if (fmt->f_comp->c_flags)
 231                         printf(", c_flags %s", c_flagsstr(fmt->f_comp->c_flags));
 232                 break;
 233
 234         case FT_STRF:
 235         case FT_NUMF:
 236                 printf(", width %d, fill '", fmt->f_width);
 237                 litputc(fmt->f_fill);
 238                 putchar('\'');
 239                 break;
 240
 241         case FT_LIT:
 242                 putchar(' ');
 243                 litputs(fmt->f_text);
 244                 break;
 245
 246         case FT_LITF:
 247                 printf(", width %d, fill '", fmt->f_width);
 248                 litputc(fmt->f_fill);
 249                 fputs("' ", stdout);
 250                 litputs(fmt->f_text);
 251                 break;
 252
 253         case FT_CHAR:
 254                 putchar(' ');
 255                 putchar('\'');
 256                 litputc(fmt->f_char);
 257                 putchar('\'');
 258                 break;
 259
 260
 261         case FT_IF_S:
 262         case FT_IF_S_NULL:
 263         case FT_IF_MATCH:
 264         case FT_IF_AMATCH:
 265                 fputs(" continue else goto", stdout);
 266                 /* FALLTHRU */
 267         case FT_GOTO:
 268                 i = findlabel(fmt + fmt->f_skip);
 269                 printf(" L%d", i);
 270                 break;
 271
 272         case FT_IF_V_EQ:
 273         case FT_IF_V_NE:
 274         case FT_IF_V_GT:
 275                 i = findlabel(fmt + fmt->f_skip);
 276                 printf(" %d continue else goto L%d", fmt->f_value, i);
 277                 break;
 278
 279         case FT_V_EQ:
 280         case FT_V_NE:
 281         case FT_V_GT:
 282         case FT_LV_LIT:
 283         case FT_LV_PLUS_L:
 284         case FT_LV_MINUS_L:
 285         case FT_LV_MULTIPLY_L:
 286         case FT_LV_DIVIDE_L:
 287         case FT_LV_MODULO_L:
 288                 printf(" value %d", fmt->f_value);
 289                 break;
 290
 291         case FT_LS_LIT:
 292                 fputs(" str ", stdout);
 293                 litputs(fmt->f_text);
 294                 break;
 295
 296         case FT_LS_GETENV:
 297                 fputs(" getenv ", stdout);
 298                 litputs(fmt->f_text);
 299                 break;
 300
 301         case FT_LS_DECODECOMP:
 302                 fputs(", comp ", stdout);
 303                 litputs(fmt->f_comp->c_name);
 304                 break;
 305
 306         case FT_LS_DECODE:
 307                 break;
 308
 309         case FT_LS_TRIM:
 310                 printf(", width %d", fmt->f_width);
 311                 break;
 312
 313         case FT_LV_DAT:
 314                 printf(", value dat[%d]", fmt->f_value);
 315                 break;
 316         }
 317         putchar('\n');
 318 }
 319
 320 static int
 321 findlabel(struct format *addr)
 322 {
 323         int i;
 324
 325         for (i = 0; i < lused; ++i)
 326                 if (addr == lvec[i])
 327                         return i;
 328         return -1;
 329 }
 330
 331 static void
 332 assignlabel(struct format *addr)
 333 {
 334         lvec[lused++] = addr;
 335 }
 336
 337 static char *
 338 f_typestr(int t)
 339 {
 340         static char buf[32];
 341
 342         switch (t) {
 343         case FT_COMP: return "COMP";
 344         case FT_COMPF: return "COMPF";
 345         case FT_LIT: return "LIT";
 346         case FT_LITF: return "LITF";
 347         case FT_CHAR: return "CHAR";
 348         case FT_NUM: return "NUM";
 349         case FT_NUMF: return "NUMF";
 350         case FT_STR: return "STR";
 351         case FT_STRF: return "STRF";
 352         case FT_STRFW: return "STRFW";
 353         case FT_STRLIT: return "STRLIT";
 354         case FT_STRLITZ: return "STRLITZ";
 355         case FT_PUTADDR: return "PUTADDR";
 356         case FT_LS_COMP: return "LS_COMP";
 357         case FT_LS_LIT: return "LS_LIT";
 358         case FT_LS_GETENV: return "LS_GETENV";
 359         case FT_LS_CFIND: return "LS_CFIND";
 360         case FT_LS_DECODECOMP: return "LS_DECODECOMP";
 361         case FT_LS_DECODE: return "LS_DECODE";
 362         case FT_LS_TRIM: return "LS_TRIM";
 363         case FT_LV_COMP: return "LV_COMP";
 364         case FT_LV_COMPFLAG: return "LV_COMPFLAG";
 365         case FT_LV_LIT: return "LV_LIT";
 366         case FT_LV_DAT: return "LV_DAT";
 367         case FT_LV_STRLEN: return "LV_STRLEN";
 368         case FT_LV_PLUS_L: return "LV_PLUS_L";
 369         case FT_LV_MINUS_L: return "LV_MINUS_L";
 370         case FT_LV_MULTIPLY_L: return "LV_MULTIPLY_L";
 371         case FT_LV_DIVIDE_L: return "LV_DIVIDE_L";
 372         case FT_LV_MODULO_L: return "LV_MODULO_L";
 373         case FT_LV_CHAR_LEFT: return "LV_CHAR_LEFT";
 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_LS_KILO: return "LS_KILO";
 382         case FT_LS_KIBI: return "LS_KIBI";
 383         case FT_LV_SEC: return "LV_SEC";
 384         case FT_LV_MIN: return "LV_MIN";
 385         case FT_LV_HOUR: return "LV_HOUR";
 386         case FT_LV_MDAY: return "LV_MDAY";
 387         case FT_LV_MON: return "LV_MON";
 388         case FT_LV_YEAR: return "LV_YEAR";
 389         case FT_LV_YDAY: return "LV_YDAY";
 390         case FT_LV_WDAY: return "LV_WDAY";
 391         case FT_LV_ZONE: return "LV_ZONE";
 392         case FT_LV_CLOCK: return "LV_CLOCK";
 393         case FT_LV_RCLOCK: return "LV_RCLOCK";
 394         case FT_LV_DAYF: return "LV_DAYF";
 395         case FT_LV_DST: return "LV_DST";
 396         case FT_LV_ZONEF: return "LV_ZONEF";
 397         case FT_LS_PERS: return "LS_PERS";
 398         case FT_LS_MBOX: return "LS_MBOX";
 399         case FT_LS_HOST: return "LS_HOST";
 400         case FT_LS_PATH: return "LS_PATH";
 401         case FT_LS_GNAME: return "LS_GNAME";
 402         case FT_LS_NOTE: return "LS_NOTE";
 403         case FT_LS_ADDR: return "LS_ADDR";
 404         case FT_LS_822ADDR: return "LS_822ADDR";
 405         case FT_LS_FRIENDLY: return "LS_FRIENDLY";
 406         case FT_LV_HOSTTYPE: return "LV_HOSTTYPE";
 407         case FT_LV_INGRPF: return "LV_INGRPF";
 408         case FT_LS_UNQUOTE: return "LS_UNQUOTE";
 409         case FT_LV_NOHOSTF: return "LV_NOHOSTF";
 410         case FT_LOCALDATE: return "LOCALDATE";
 411         case FT_GMTDATE: return "GMTDATE";
 412         case FT_PARSEDATE: return "PARSEDATE";
 413         case FT_PARSEADDR: return "PARSEADDR";
 414         case FT_FORMATADDR: return "FORMATADDR";
 415         case FT_CONCATADDR: return "CONCATADDR";
 416         case FT_MYMBOX: return "MYMBOX";
 417         case FT_GETMYMBOX: return "GETMYMBOX";
 418         case FT_GETMYADDR: return "GETMYADDR";
 419         case FT_SAVESTR: return "SAVESTR";
 420         case FT_DONE: return "DONE";
 421         case FT_PAUSE: return "PAUSE";
 422         case FT_NOP: return "NOP";
 423         case FT_GOTO: return "GOTO";
 424         case FT_IF_S_NULL: return "IF_S_NULL";
 425         case FT_IF_S: return "IF_S";
 426         case FT_IF_V_EQ: return "IF_V_EQ";
 427         case FT_IF_V_NE: return "IF_V_NE";
 428         case FT_IF_V_GT: return "IF_V_GT";
 429         case FT_IF_MATCH: return "IF_MATCH";
 430         case FT_IF_AMATCH: return "IF_AMATCH";
 431         case FT_S_NULL: return "S_NULL";
 432         case FT_S_NONNULL: return "S_NONNULL";
 433         case FT_V_EQ: return "V_EQ";
 434         case FT_V_NE: return "V_NE";
 435         case FT_V_GT: return "V_GT";
 436         case FT_V_MATCH: return "V_MATCH";
 437         case FT_V_AMATCH: return "V_AMATCH";
 438         default:
 439                 snprintf(buf, sizeof buf, "/* ??? #%d */", t);
 440                 return buf;
 441         }
 442 }
 443
 444 #define FNORD(v, s) if (t & (v)) { \
 445         if (i++ > 0) \
 446                 strcat(buf, "|"); \
 447         strcat(buf, s); }
 448
 449 static char *
 450 c_typestr(int t)
 451 {
 452         int i;
 453         static char buf[64];
 454
 455         buf[0] = '\0';
 456         if (t & ~(CT_ADDR|CT_DATE))
 457                 snprintf(buf, sizeof buf, "0x%x ", t);
 458         strcat(buf, "<");
 459         i = 0;
 460         FNORD(CT_ADDR, "ADDR");
 461         FNORD(CT_DATE, "DATE");
 462         strcat(buf, ">");
 463         return buf;
 464 }
 465
 466 static char *
 467 c_flagsstr(int t)
 468 {
 469         int i;
 470         static char buf[64];
 471
 472         buf[0] = '\0';
 473         if (t & ~(CF_TRUE|CF_PARSED|CF_DATEFAB|CF_TRIMMED))
 474                 snprintf(buf, sizeof buf, "0x%x ", t);
 475         strcat(buf, "<");
 476         i = 0;
 477         FNORD(CF_TRUE, "TRUE");
 478         FNORD(CF_PARSED, "PARSED");
 479         FNORD(CF_DATEFAB, "DATEFAB");
 480         FNORD(CF_TRIMMED, "TRIMMED");
 481         strcat(buf, ">");
 482         return buf;
 483 }
 484 #undef FNORD
 485
 486 static void
 487 litputs(char *s)
 488 {
 489         if (s) {
 490                 putchar('"');
 491                 while (*s)
 492                         litputc(*s++);
 493                 putchar('"');
 494         } else
 495                 fputs("<nil>", stdout);
 496 }
 497
 498 static void
 499 litputc(char c)
 500 {
 501         if (c & ~ 0177) {
 502                 putchar('M');
 503                 putchar('-');
 504                 c &= 0177;
 505         }
 506         if (c < 0x20 || c == 0177) {
 507                 if (c == '\b') {
 508                         putchar('\\');
 509                         putchar('b');
 510                 } else if (c == '\f') {
 511                         putchar('\\');
 512                         putchar('f');
 513                 } else if (c == '\n') {
 514                         putchar('\\');
 515                         putchar('n');
 516                 } else if (c == '\r') {
 517                         putchar('\\');
 518                         putchar('r');
 519                 } else if (c == '\t') {
 520                         putchar('\\');
 521                         putchar('t');
 522                 } else {
 523                         putchar('^');
 524                         putchar(c ^ 0x40);      /* DEL to ?, others to alpha */
 525                 }
 526         } else
 527                 putchar(c);
 528 }