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/print_help.h"
  10 #include "sbr/error.h"
  11 #include "h/fmt_scan.h"
  12 #include "h/fmt_compile.h"
  13 #include "h/scansbr.h"
  14 #include "h/done.h"
  15 #include "h/utils.h"
  16
  17 #define FMTDUMP_SWITCHES \
  18     X("form formatfile", 0, FORMSW) \
  19     X("format string", 5, FMTSW) \
  20     X("version", 0, VERSIONSW) \
  21     X("help", 0, HELPSW) \
  22
  23 #define X(sw, minchars, id) id,
  24 DEFINE_SWITCH_ENUM(FMTDUMP);
  25 #undef X
  26
  27 #define X(sw, minchars, id) { sw, minchars, id },
  28 DEFINE_SWITCH_ARRAY(FMTDUMP, switches);
  29 #undef X
  30
  31 /* for assignlabel */
  32 static struct format *lvec[128];
  33 static int lused = 0;
  34
  35 /*
  36  * static prototypes
  37  */
  38 static void fmt_dump (struct format *);
  39 static void dumpone(struct format *);
  40 static int findlabel(struct format *);
  41 static void assignlabel(struct format *);
  42 static char *f_typestr(int);
  43 static char *c_typestr(int);
  44 static char *c_flagsstr(int);
  45 static void litputs(char *);
  46 static void litputc(char);
  47
  48
  49 int
  50 main (int argc, char **argv)
  51 {
  52     char *cp, *form = NULL, *format = NULL;
  53     char buf[BUFSIZ], *nfs, **argp, **arguments;
  54     struct format *fmt;
  55
  56     if (nmh_init(argv[0], true, false)) { return 1; }
  57
  58     arguments = getarguments (invo_name, argc, argv, 1);
  59     argp = arguments;
  60
  61     while ((cp = *argp++)) {
  62         if (*cp == '-') {
  63             switch (smatch (++cp, switches)) {
  64                 case AMBIGSW:
  65                     ambigsw (cp, switches);
  66                     done (1);
  67                 case UNKWNSW:
  68                     die("-%s unknown", cp);
  69
  70                 case HELPSW:
  71                     snprintf (buf, sizeof(buf), "%s [switches]", invo_name);
  72                     print_help (buf, switches, 1);
  73                     done (0);
  74                 case VERSIONSW:
  75                     print_version(invo_name);
  76                     done (0);
  77
  78                 case FORMSW:
  79                     if (!(form = *argp++) || *form == '-')
  80                         die("missing argument to %s", argp[-2]);
  81                     format = NULL;
  82                     continue;
  83                 case FMTSW:
  84                     if (!(format = *argp++) || *format == '-')
  85                         die("missing argument to %s", argp[-2]);
  86                     form = NULL;
  87                     continue;
  88
  89             }
  90         }
  91         if (form)
  92             die("only one form at a time!");
  93         form = cp;
  94     }
  95
  96     /*
  97      * Get new format string.  Must be before chdir().
  98      */
  99     nfs = new_fs (form, format, FORMAT);
 100     (void) fmt_compile(nfs, &fmt, 1);
 101
 102     fmt_dump(fmt);
 103
 104     fmt_free(fmt, 1);
 105
 106     done(0);
 107     return 1;
 108 }
 109
 110 static void
 111 fmt_dump (struct format *fmth)
 112 {
 113         int i;
 114         struct format *fmt, *addr;
 115
 116         /* Assign labels */
 117         for (fmt = fmth; fmt; ++fmt) {
 118                 i = fmt->f_type;
 119                 if (i == FT_IF_S ||
 120                     i == FT_IF_S_NULL ||
 121                     i == FT_IF_V_EQ ||
 122                     i == FT_IF_V_NE ||
 123                     i == FT_IF_V_GT ||
 124                     i == FT_IF_MATCH ||
 125                     i == FT_IF_AMATCH ||
 126                     i == FT_GOTO) {
 127                         addr = fmt + fmt->f_skip;
 128                         if (findlabel(addr) < 0)
 129                                 assignlabel(addr);
 130                 }
 131                 if (fmt->f_type == FT_DONE && fmt->f_value == 0)
 132                         break;
 133         }
 134
 135         /* Dump them out! */
 136         for (fmt = fmth; fmt; ++fmt) {
 137                 dumpone(fmt);
 138                 if (fmt->f_type == FT_DONE && fmt->f_value == 0)
 139                         break;
 140         }
 141 }
 142
 143 static void
 144 dumpone(struct format *fmt)
 145 {
 146         int i;
 147
 148         if ((i = findlabel(fmt)) >= 0)
 149                 printf("L%d:", i);
 150         putchar('\t');
 151
 152         fputs(f_typestr((int)fmt->f_type), stdout);
 153
 154         switch (fmt->f_type) {
 155
 156         case FT_COMP:
 157         case FT_LS_COMP:
 158         case FT_LV_COMPFLAG:
 159         case FT_LV_COMP:
 160                 fputs(", comp ", stdout);
 161                 litputs(fmt->f_comp->c_name);
 162                 if (fmt->f_comp->c_type)
 163                         printf(", c_type %s", c_typestr(fmt->f_comp->c_type));
 164                 if (fmt->f_comp->c_flags)
 165                         printf(", c_flags %s", c_flagsstr(fmt->f_comp->c_flags));
 166                 break;
 167
 168         case FT_LV_SEC:
 169         case FT_LV_MIN:
 170         case FT_LV_HOUR:
 171         case FT_LV_MDAY:
 172         case FT_LV_MON:
 173         case FT_LS_MONTH:
 174         case FT_LS_LMONTH:
 175         case FT_LS_ZONE:
 176         case FT_LV_YEAR:
 177         case FT_LV_WDAY:
 178         case FT_LS_DAY:
 179         case FT_LS_WEEKDAY:
 180         case FT_LV_YDAY:
 181         case FT_LV_ZONE:
 182         case FT_LV_CLOCK:
 183         case FT_LV_RCLOCK:
 184         case FT_LV_DAYF:
 185         case FT_LV_ZONEF:
 186         case FT_LV_DST:
 187         case FT_LS_822DATE:
 188         case FT_LS_PRETTY:
 189         case FT_LOCALDATE:
 190         case FT_GMTDATE:
 191         case FT_PARSEDATE:
 192                 fputs(", c_name ", stdout);
 193                 litputs(fmt->f_comp->c_name);
 194                 if (fmt->f_comp->c_type)
 195                         printf(", c_type %s", c_typestr(fmt->f_comp->c_type));
 196                 if (fmt->f_comp->c_flags)
 197                         printf(", c_flags %s", c_flagsstr(fmt->f_comp->c_flags));
 198                 break;
 199
 200         case FT_LS_ADDR:
 201         case FT_LS_PERS:
 202         case FT_LS_MBOX:
 203         case FT_LS_HOST:
 204         case FT_LS_PATH:
 205         case FT_LS_GNAME:
 206         case FT_LS_NOTE:
 207         case FT_LS_822ADDR:
 208         case FT_LV_HOSTTYPE:
 209         case FT_LV_INGRPF:
 210         case FT_LV_NOHOSTF:
 211         case FT_LS_FRIENDLY:
 212         case FT_PARSEADDR:
 213         case FT_MYMBOX:
 214         case FT_GETMYMBOX:
 215         case FT_GETMYADDR:
 216                 fputs(", c_name ", stdout);
 217                 litputs(fmt->f_comp->c_name);
 218                 if (fmt->f_comp->c_type)
 219                         printf(", c_type %s", c_typestr(fmt->f_comp->c_type));
 220                 if (fmt->f_comp->c_flags)
 221                         printf(", c_flags %s", c_flagsstr(fmt->f_comp->c_flags));
 222                 break;
 223
 224         case FT_COMPF:
 225                 printf(", width %d, fill '", fmt->f_width);
 226                 litputc(fmt->f_fill);
 227                 fputs("' name ", stdout);
 228                 litputs(fmt->f_comp->c_name);
 229                 if (fmt->f_comp->c_type)
 230                         printf(", c_type %s", c_typestr(fmt->f_comp->c_type));
 231                 if (fmt->f_comp->c_flags)
 232                         printf(", c_flags %s", c_flagsstr(fmt->f_comp->c_flags));
 233                 break;
 234
 235         case FT_STRF:
 236         case FT_NUMF:
 237                 printf(", width %d, fill '", fmt->f_width);
 238                 litputc(fmt->f_fill);
 239                 putchar('\'');
 240                 break;
 241
 242         case FT_LIT:
 243                 putchar(' ');
 244                 litputs(fmt->f_text);
 245                 break;
 246
 247         case FT_LITF:
 248                 printf(", width %d, fill '", fmt->f_width);
 249                 litputc(fmt->f_fill);
 250                 fputs("' ", stdout);
 251                 litputs(fmt->f_text);
 252                 break;
 253
 254         case FT_CHAR:
 255                 putchar(' ');
 256                 putchar('\'');
 257                 litputc(fmt->f_char);
 258                 putchar('\'');
 259                 break;
 260
 261
 262         case FT_IF_S:
 263         case FT_IF_S_NULL:
 264         case FT_IF_MATCH:
 265         case FT_IF_AMATCH:
 266                 fputs(" continue else goto", stdout);
 267                 /* FALLTHRU */
 268         case FT_GOTO:
 269                 i = findlabel(fmt + fmt->f_skip);
 270                 printf(" L%d", i);
 271                 break;
 272
 273         case FT_IF_V_EQ:
 274         case FT_IF_V_NE:
 275         case FT_IF_V_GT:
 276                 i = findlabel(fmt + fmt->f_skip);
 277                 printf(" %d continue else goto L%d", fmt->f_value, i);
 278                 break;
 279
 280         case FT_V_EQ:
 281         case FT_V_NE:
 282         case FT_V_GT:
 283         case FT_LV_LIT:
 284         case FT_LV_PLUS_L:
 285         case FT_LV_MINUS_L:
 286         case FT_LV_MULTIPLY_L:
 287         case FT_LV_DIVIDE_L:
 288         case FT_LV_MODULO_L:
 289                 printf(" value %d", fmt->f_value);
 290                 break;
 291
 292         case FT_LS_LIT:
 293                 fputs(" str ", stdout);
 294                 litputs(fmt->f_text);
 295                 break;
 296
 297         case FT_LS_GETENV:
 298                 fputs(" getenv ", stdout);
 299                 litputs(fmt->f_text);
 300                 break;
 301
 302         case FT_LS_DECODECOMP:
 303                 fputs(", comp ", stdout);
 304                 litputs(fmt->f_comp->c_name);
 305                 break;
 306
 307         case FT_LS_DECODE:
 308                 break;
 309
 310         case FT_LS_TRIM:
 311                 printf(", width %d", fmt->f_width);
 312                 break;
 313
 314         case FT_LV_DAT:
 315                 printf(", value dat[%d]", fmt->f_value);
 316                 break;
 317         }
 318         putchar('\n');
 319 }
 320
 321 static int
 322 findlabel(struct format *addr)
 323 {
 324         int i;
 325
 326         for (i = 0; i < lused; ++i)
 327                 if (addr == lvec[i])
 328                         return i;
 329         return -1;
 330 }
 331
 332 static void
 333 assignlabel(struct format *addr)
 334 {
 335         lvec[lused++] = addr;
 336 }
 337
 338 static char *
 339 f_typestr(int t)
 340 {
 341         static char buf[32];
 342
 343         switch (t) {
 344         case FT_COMP: return "COMP";
 345         case FT_COMPF: return "COMPF";
 346         case FT_LIT: return "LIT";
 347         case FT_LITF: return "LITF";
 348         case FT_CHAR: return "CHAR";
 349         case FT_NUM: return "NUM";
 350         case FT_NUMF: return "NUMF";
 351         case FT_STR: return "STR";
 352         case FT_STRF: return "STRF";
 353         case FT_STRFW: return "STRFW";
 354         case FT_STRLIT: return "STRLIT";
 355         case FT_STRLITZ: return "STRLITZ";
 356         case FT_PUTADDR: return "PUTADDR";
 357         case FT_LS_COMP: return "LS_COMP";
 358         case FT_LS_LIT: return "LS_LIT";
 359         case FT_LS_GETENV: return "LS_GETENV";
 360         case FT_LS_CFIND: return "LS_CFIND";
 361         case FT_LS_DECODECOMP: return "LS_DECODECOMP";
 362         case FT_LS_DECODE: return "LS_DECODE";
 363         case FT_LS_TRIM: return "LS_TRIM";
 364         case FT_LV_COMP: return "LV_COMP";
 365         case FT_LV_COMPFLAG: return "LV_COMPFLAG";
 366         case FT_LV_LIT: return "LV_LIT";
 367         case FT_LV_DAT: return "LV_DAT";
 368         case FT_LV_STRLEN: return "LV_STRLEN";
 369         case FT_LV_PLUS_L: return "LV_PLUS_L";
 370         case FT_LV_MINUS_L: return "LV_MINUS_L";
 371         case FT_LV_MULTIPLY_L: return "LV_MULTIPLY_L";
 372         case FT_LV_DIVIDE_L: return "LV_DIVIDE_L";
 373         case FT_LV_MODULO_L: return "LV_MODULO_L";
 374         case FT_LV_CHAR_LEFT: return "LV_CHAR_LEFT";
 375         case FT_LS_MONTH: return "LS_MONTH";
 376         case FT_LS_LMONTH: return "LS_LMONTH";
 377         case FT_LS_ZONE: return "LS_ZONE";
 378         case FT_LS_DAY: return "LS_DAY";
 379         case FT_LS_WEEKDAY: return "LS_WEEKDAY";
 380         case FT_LS_822DATE: return "LS_822DATE";
 381         case FT_LS_PRETTY: return "LS_PRETTY";
 382         case FT_LS_KILO: return "LS_KILO";
 383         case FT_LS_KIBI: return "LS_KIBI";
 384         case FT_LV_SEC: return "LV_SEC";
 385         case FT_LV_MIN: return "LV_MIN";
 386         case FT_LV_HOUR: return "LV_HOUR";
 387         case FT_LV_MDAY: return "LV_MDAY";
 388         case FT_LV_MON: return "LV_MON";
 389         case FT_LV_YEAR: return "LV_YEAR";
 390         case FT_LV_YDAY: return "LV_YDAY";
 391         case FT_LV_WDAY: return "LV_WDAY";
 392         case FT_LV_ZONE: return "LV_ZONE";
 393         case FT_LV_CLOCK: return "LV_CLOCK";
 394         case FT_LV_RCLOCK: return "LV_RCLOCK";
 395         case FT_LV_DAYF: return "LV_DAYF";
 396         case FT_LV_DST: return "LV_DST";
 397         case FT_LV_ZONEF: return "LV_ZONEF";
 398         case FT_LS_PERS: return "LS_PERS";
 399         case FT_LS_MBOX: return "LS_MBOX";
 400         case FT_LS_HOST: return "LS_HOST";
 401         case FT_LS_PATH: return "LS_PATH";
 402         case FT_LS_GNAME: return "LS_GNAME";
 403         case FT_LS_NOTE: return "LS_NOTE";
 404         case FT_LS_ADDR: return "LS_ADDR";
 405         case FT_LS_822ADDR: return "LS_822ADDR";
 406         case FT_LS_FRIENDLY: return "LS_FRIENDLY";
 407         case FT_LV_HOSTTYPE: return "LV_HOSTTYPE";
 408         case FT_LV_INGRPF: return "LV_INGRPF";
 409         case FT_LS_UNQUOTE: return "LS_UNQUOTE";
 410         case FT_LV_NOHOSTF: return "LV_NOHOSTF";
 411         case FT_LOCALDATE: return "LOCALDATE";
 412         case FT_GMTDATE: return "GMTDATE";
 413         case FT_PARSEDATE: return "PARSEDATE";
 414         case FT_PARSEADDR: return "PARSEADDR";
 415         case FT_FORMATADDR: return "FORMATADDR";
 416         case FT_CONCATADDR: return "CONCATADDR";
 417         case FT_MYMBOX: return "MYMBOX";
 418         case FT_GETMYMBOX: return "GETMYMBOX";
 419         case FT_GETMYADDR: return "GETMYADDR";
 420         case FT_SAVESTR: return "SAVESTR";
 421         case FT_DONE: return "DONE";
 422         case FT_PAUSE: return "PAUSE";
 423         case FT_NOP: return "NOP";
 424         case FT_GOTO: return "GOTO";
 425         case FT_IF_S_NULL: return "IF_S_NULL";
 426         case FT_IF_S: return "IF_S";
 427         case FT_IF_V_EQ: return "IF_V_EQ";
 428         case FT_IF_V_NE: return "IF_V_NE";
 429         case FT_IF_V_GT: return "IF_V_GT";
 430         case FT_IF_MATCH: return "IF_MATCH";
 431         case FT_IF_AMATCH: return "IF_AMATCH";
 432         case FT_S_NULL: return "S_NULL";
 433         case FT_S_NONNULL: return "S_NONNULL";
 434         case FT_V_EQ: return "V_EQ";
 435         case FT_V_NE: return "V_NE";
 436         case FT_V_GT: return "V_GT";
 437         case FT_V_MATCH: return "V_MATCH";
 438         case FT_V_AMATCH: return "V_AMATCH";
 439         default:
 440                 snprintf(buf, sizeof buf, "/* ??? #%d */", t);
 441                 return buf;
 442         }
 443 }
 444
 445 #define FNORD(v, s) if (t & (v)) { \
 446         if (i++ > 0) \
 447                 strcat(buf, "|"); \
 448         strcat(buf, s); }
 449
 450 static char *
 451 c_typestr(int t)
 452 {
 453         int i;
 454         static char buf[64];
 455
 456         buf[0] = '\0';
 457         if (t & ~(CT_ADDR|CT_DATE))
 458                 snprintf(buf, sizeof buf, "0x%x ", t);
 459         strcat(buf, "<");
 460         i = 0;
 461         FNORD(CT_ADDR, "ADDR");
 462         FNORD(CT_DATE, "DATE");
 463         strcat(buf, ">");
 464         return buf;
 465 }
 466
 467 static char *
 468 c_flagsstr(int t)
 469 {
 470         int i;
 471         static char buf[64];
 472
 473         buf[0] = '\0';
 474         if (t & ~(CF_TRUE|CF_PARSED|CF_DATEFAB|CF_TRIMMED))
 475                 snprintf(buf, sizeof buf, "0x%x ", t);
 476         strcat(buf, "<");
 477         i = 0;
 478         FNORD(CF_TRUE, "TRUE");
 479         FNORD(CF_PARSED, "PARSED");
 480         FNORD(CF_DATEFAB, "DATEFAB");
 481         FNORD(CF_TRIMMED, "TRIMMED");
 482         strcat(buf, ">");
 483         return buf;
 484 }
 485 #undef FNORD
 486
 487 static void
 488 litputs(char *s)
 489 {
 490         if (s) {
 491                 putchar('"');
 492                 while (*s)
 493                         litputc(*s++);
 494                 putchar('"');
 495         } else
 496                 fputs("<nil>", stdout);
 497 }
 498
 499 static void
 500 litputc(char c)
 501 {
 502         if (c & ~ 0177) {
 503                 putchar('M');
 504                 putchar('-');
 505                 c &= 0177;
 506         }
 507         if (c < 0x20 || c == 0177) {
 508                 if (c == '\b') {
 509                         putchar('\\');
 510                         putchar('b');
 511                 } else if (c == '\f') {
 512                         putchar('\\');
 513                         putchar('f');
 514                 } else if (c == '\n') {
 515                         putchar('\\');
 516                         putchar('n');
 517                 } else if (c == '\r') {
 518                         putchar('\\');
 519                         putchar('r');
 520                 } else if (c == '\t') {
 521                         putchar('\\');
 522                         putchar('t');
 523                 } else {
 524                         putchar('^');
 525                         putchar(c ^ 0x40);      /* DEL to ?, others to alpha */
 526                 }
 527         } else
 528                 putchar(c);
 529 }