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_version.h"
  10 #include "sbr/print_help.h"
  11 #include "sbr/error.h"
  12 #include "h/fmt_scan.h"
  13 #include "h/fmt_compile.h"
  14 #include "h/scansbr.h"
  15 #include "h/done.h"
  16 #include "h/utils.h"
  17
  18 #define FMTDUMP_SWITCHES \
  19     X("form formatfile", 0, FORMSW) \
  20     X("format string", 5, FMTSW) \
  21     X("version", 0, VERSIONSW) \
  22     X("help", 0, HELPSW) \
  23
  24 #define X(sw, minchars, id) id,
  25 DEFINE_SWITCH_ENUM(FMTDUMP);
  26 #undef X
  27
  28 #define X(sw, minchars, id) { sw, minchars, id },
  29 DEFINE_SWITCH_ARRAY(FMTDUMP, switches);
  30 #undef X
  31
  32 /* for assignlabel */
  33 static struct format *lvec[128];
  34 static int lused = 0;
  35
  36 /*
  37  * static prototypes
  38  */
  39 static void fmt_dump (struct format *);
  40 static void dumpone(struct format *);
  41 static int findlabel(struct format *);
  42 static void assignlabel(struct format *);
  43 static char *f_typestr(int);
  44 static char *c_typestr(int);
  45 static char *c_flagsstr(int);
  46 static void litputs(char *);
  47 static void litputc(char);
  48
  49
  50 int
  51 main (int argc, char **argv)
  52 {
  53     char *cp, *form = NULL, *format = NULL;
  54     char buf[BUFSIZ], *nfs, **argp, **arguments;
  55     struct format *fmt;
  56
  57     if (nmh_init(argv[0], true, false)) { return 1; }
  58
  59     arguments = getarguments (invo_name, argc, argv, 1);
  60     argp = arguments;
  61
  62     while ((cp = *argp++)) {
  63         if (*cp == '-') {
  64             switch (smatch (++cp, switches)) {
  65                 case AMBIGSW:
  66                     ambigsw (cp, switches);
  67                     done (1);
  68                 case UNKWNSW:
  69                     die("-%s unknown", cp);
  70
  71                 case HELPSW:
  72                     snprintf (buf, sizeof(buf), "%s [switches]", invo_name);
  73                     print_help (buf, switches, 1);
  74                     done (0);
  75                 case VERSIONSW:
  76                     print_version(invo_name);
  77                     done (0);
  78
  79                 case FORMSW:
  80                     if (!(form = *argp++) || *form == '-')
  81                         die("missing argument to %s", argp[-2]);
  82                     format = NULL;
  83                     continue;
  84                 case FMTSW:
  85                     if (!(format = *argp++) || *format == '-')
  86                         die("missing argument to %s", argp[-2]);
  87                     form = NULL;
  88                     continue;
  89
  90             }
  91         }
  92         if (form)
  93             die("only one form at a time!");
  94         form = cp;
  95     }
  96
  97     /*
  98      * Get new format string.  Must be before chdir().
  99      */
 100     nfs = new_fs (form, format, FORMAT);
 101     (void) fmt_compile(nfs, &fmt, 1);
 102
 103     fmt_dump(fmt);
 104
 105     fmt_free(fmt, 1);
 106
 107     done(0);
 108     return 1;
 109 }
 110
 111 static void
 112 fmt_dump (struct format *fmth)
 113 {
 114         int i;
 115         struct format *fmt, *addr;
 116
 117         /* Assign labels */
 118         for (fmt = fmth; fmt; ++fmt) {
 119                 i = fmt->f_type;
 120                 if (i == FT_IF_S ||
 121                     i == FT_IF_S_NULL ||
 122                     i == FT_IF_V_EQ ||
 123                     i == FT_IF_V_NE ||
 124                     i == FT_IF_V_GT ||
 125                     i == FT_IF_MATCH ||
 126                     i == FT_IF_AMATCH ||
 127                     i == FT_GOTO) {
 128                         addr = fmt + fmt->f_skip;
 129                         if (findlabel(addr) < 0)
 130                                 assignlabel(addr);
 131                 }
 132                 if (fmt->f_type == FT_DONE && fmt->f_value == 0)
 133                         break;
 134         }
 135
 136         /* Dump them out! */
 137         for (fmt = fmth; fmt; ++fmt) {
 138                 dumpone(fmt);
 139                 if (fmt->f_type == FT_DONE && fmt->f_value == 0)
 140                         break;
 141         }
 142 }
 143
 144 static void
 145 dumpone(struct format *fmt)
 146 {
 147         int i;
 148
 149         if ((i = findlabel(fmt)) >= 0)
 150                 printf("L%d:", i);
 151         putchar('\t');
 152
 153         fputs(f_typestr((int)fmt->f_type), stdout);
 154
 155         switch (fmt->f_type) {
 156
 157         case FT_COMP:
 158         case FT_LS_COMP:
 159         case FT_LV_COMPFLAG:
 160         case FT_LV_COMP:
 161                 fputs(", comp ", stdout);
 162                 litputs(fmt->f_comp->c_name);
 163                 if (fmt->f_comp->c_type)
 164                         printf(", c_type %s", c_typestr(fmt->f_comp->c_type));
 165                 if (fmt->f_comp->c_flags)
 166                         printf(", c_flags %s", c_flagsstr(fmt->f_comp->c_flags));
 167                 break;
 168
 169         case FT_LV_SEC:
 170         case FT_LV_MIN:
 171         case FT_LV_HOUR:
 172         case FT_LV_MDAY:
 173         case FT_LV_MON:
 174         case FT_LS_MONTH:
 175         case FT_LS_LMONTH:
 176         case FT_LS_ZONE:
 177         case FT_LV_YEAR:
 178         case FT_LV_WDAY:
 179         case FT_LS_DAY:
 180         case FT_LS_WEEKDAY:
 181         case FT_LV_YDAY:
 182         case FT_LV_ZONE:
 183         case FT_LV_CLOCK:
 184         case FT_LV_RCLOCK:
 185         case FT_LV_DAYF:
 186         case FT_LV_ZONEF:
 187         case FT_LV_DST:
 188         case FT_LS_822DATE:
 189         case FT_LS_PRETTY:
 190         case FT_LOCALDATE:
 191         case FT_GMTDATE:
 192         case FT_PARSEDATE:
 193                 fputs(", c_name ", stdout);
 194                 litputs(fmt->f_comp->c_name);
 195                 if (fmt->f_comp->c_type)
 196                         printf(", c_type %s", c_typestr(fmt->f_comp->c_type));
 197                 if (fmt->f_comp->c_flags)
 198                         printf(", c_flags %s", c_flagsstr(fmt->f_comp->c_flags));
 199                 break;
 200
 201         case FT_LS_ADDR:
 202         case FT_LS_PERS:
 203         case FT_LS_MBOX:
 204         case FT_LS_HOST:
 205         case FT_LS_PATH:
 206         case FT_LS_GNAME:
 207         case FT_LS_NOTE:
 208         case FT_LS_822ADDR:
 209         case FT_LV_HOSTTYPE:
 210         case FT_LV_INGRPF:
 211         case FT_LV_NOHOSTF:
 212         case FT_LS_FRIENDLY:
 213         case FT_PARSEADDR:
 214         case FT_MYMBOX:
 215         case FT_GETMYMBOX:
 216         case FT_GETMYADDR:
 217                 fputs(", c_name ", stdout);
 218                 litputs(fmt->f_comp->c_name);
 219                 if (fmt->f_comp->c_type)
 220                         printf(", c_type %s", c_typestr(fmt->f_comp->c_type));
 221                 if (fmt->f_comp->c_flags)
 222                         printf(", c_flags %s", c_flagsstr(fmt->f_comp->c_flags));
 223                 break;
 224
 225         case FT_COMPF:
 226                 printf(", width %d, fill '", fmt->f_width);
 227                 litputc(fmt->f_fill);
 228                 fputs("' name ", stdout);
 229                 litputs(fmt->f_comp->c_name);
 230                 if (fmt->f_comp->c_type)
 231                         printf(", c_type %s", c_typestr(fmt->f_comp->c_type));
 232                 if (fmt->f_comp->c_flags)
 233                         printf(", c_flags %s", c_flagsstr(fmt->f_comp->c_flags));
 234                 break;
 235
 236         case FT_STRF:
 237         case FT_NUMF:
 238                 printf(", width %d, fill '", fmt->f_width);
 239                 litputc(fmt->f_fill);
 240                 putchar('\'');
 241                 break;
 242
 243         case FT_LIT:
 244                 putchar(' ');
 245                 litputs(fmt->f_text);
 246                 break;
 247
 248         case FT_LITF:
 249                 printf(", width %d, fill '", fmt->f_width);
 250                 litputc(fmt->f_fill);
 251                 fputs("' ", stdout);
 252                 litputs(fmt->f_text);
 253                 break;
 254
 255         case FT_CHAR:
 256                 putchar(' ');
 257                 putchar('\'');
 258                 litputc(fmt->f_char);
 259                 putchar('\'');
 260                 break;
 261
 262
 263         case FT_IF_S:
 264         case FT_IF_S_NULL:
 265         case FT_IF_MATCH:
 266         case FT_IF_AMATCH:
 267                 fputs(" continue else goto", stdout);
 268                 /* FALLTHRU */
 269         case FT_GOTO:
 270                 i = findlabel(fmt + fmt->f_skip);
 271                 printf(" L%d", i);
 272                 break;
 273
 274         case FT_IF_V_EQ:
 275         case FT_IF_V_NE:
 276         case FT_IF_V_GT:
 277                 i = findlabel(fmt + fmt->f_skip);
 278                 printf(" %d continue else goto L%d", fmt->f_value, i);
 279                 break;
 280
 281         case FT_V_EQ:
 282         case FT_V_NE:
 283         case FT_V_GT:
 284         case FT_LV_LIT:
 285         case FT_LV_PLUS_L:
 286         case FT_LV_MINUS_L:
 287         case FT_LV_MULTIPLY_L:
 288         case FT_LV_DIVIDE_L:
 289         case FT_LV_MODULO_L:
 290                 printf(" value %d", fmt->f_value);
 291                 break;
 292
 293         case FT_LS_LIT:
 294                 fputs(" str ", stdout);
 295                 litputs(fmt->f_text);
 296                 break;
 297
 298         case FT_LS_GETENV:
 299                 fputs(" getenv ", stdout);
 300                 litputs(fmt->f_text);
 301                 break;
 302
 303         case FT_LS_DECODECOMP:
 304                 fputs(", comp ", stdout);
 305                 litputs(fmt->f_comp->c_name);
 306                 break;
 307
 308         case FT_LS_DECODE:
 309                 break;
 310
 311         case FT_LS_TRIM:
 312                 printf(", width %d", fmt->f_width);
 313                 break;
 314
 315         case FT_LV_DAT:
 316                 printf(", value dat[%d]", fmt->f_value);
 317                 break;
 318         }
 319         putchar('\n');
 320 }
 321
 322 static int
 323 findlabel(struct format *addr)
 324 {
 325         int i;
 326
 327         for (i = 0; i < lused; ++i)
 328                 if (addr == lvec[i])
 329                         return i;
 330         return -1;
 331 }
 332
 333 static void
 334 assignlabel(struct format *addr)
 335 {
 336         lvec[lused++] = addr;
 337 }
 338
 339 static char *
 340 f_typestr(int t)
 341 {
 342         static char buf[32];
 343
 344         switch (t) {
 345         case FT_COMP: return "COMP";
 346         case FT_COMPF: return "COMPF";
 347         case FT_LIT: return "LIT";
 348         case FT_LITF: return "LITF";
 349         case FT_CHAR: return "CHAR";
 350         case FT_NUM: return "NUM";
 351         case FT_NUMF: return "NUMF";
 352         case FT_STR: return "STR";
 353         case FT_STRF: return "STRF";
 354         case FT_STRFW: return "STRFW";
 355         case FT_STRLIT: return "STRLIT";
 356         case FT_STRLITZ: return "STRLITZ";
 357         case FT_PUTADDR: return "PUTADDR";
 358         case FT_LS_COMP: return "LS_COMP";
 359         case FT_LS_LIT: return "LS_LIT";
 360         case FT_LS_GETENV: return "LS_GETENV";
 361         case FT_LS_CFIND: return "LS_CFIND";
 362         case FT_LS_DECODECOMP: return "LS_DECODECOMP";
 363         case FT_LS_DECODE: return "LS_DECODE";
 364         case FT_LS_TRIM: return "LS_TRIM";
 365         case FT_LV_COMP: return "LV_COMP";
 366         case FT_LV_COMPFLAG: return "LV_COMPFLAG";
 367         case FT_LV_LIT: return "LV_LIT";
 368         case FT_LV_DAT: return "LV_DAT";
 369         case FT_LV_STRLEN: return "LV_STRLEN";
 370         case FT_LV_PLUS_L: return "LV_PLUS_L";
 371         case FT_LV_MINUS_L: return "LV_MINUS_L";
 372         case FT_LV_MULTIPLY_L: return "LV_MULTIPLY_L";
 373         case FT_LV_DIVIDE_L: return "LV_DIVIDE_L";
 374         case FT_LV_MODULO_L: return "LV_MODULO_L";
 375         case FT_LV_CHAR_LEFT: return "LV_CHAR_LEFT";
 376         case FT_LS_MONTH: return "LS_MONTH";
 377         case FT_LS_LMONTH: return "LS_LMONTH";
 378         case FT_LS_ZONE: return "LS_ZONE";
 379         case FT_LS_DAY: return "LS_DAY";
 380         case FT_LS_WEEKDAY: return "LS_WEEKDAY";
 381         case FT_LS_822DATE: return "LS_822DATE";
 382         case FT_LS_PRETTY: return "LS_PRETTY";
 383         case FT_LS_KILO: return "LS_KILO";
 384         case FT_LS_KIBI: return "LS_KIBI";
 385         case FT_LV_SEC: return "LV_SEC";
 386         case FT_LV_MIN: return "LV_MIN";
 387         case FT_LV_HOUR: return "LV_HOUR";
 388         case FT_LV_MDAY: return "LV_MDAY";
 389         case FT_LV_MON: return "LV_MON";
 390         case FT_LV_YEAR: return "LV_YEAR";
 391         case FT_LV_YDAY: return "LV_YDAY";
 392         case FT_LV_WDAY: return "LV_WDAY";
 393         case FT_LV_ZONE: return "LV_ZONE";
 394         case FT_LV_CLOCK: return "LV_CLOCK";
 395         case FT_LV_RCLOCK: return "LV_RCLOCK";
 396         case FT_LV_DAYF: return "LV_DAYF";
 397         case FT_LV_DST: return "LV_DST";
 398         case FT_LV_ZONEF: return "LV_ZONEF";
 399         case FT_LS_PERS: return "LS_PERS";
 400         case FT_LS_MBOX: return "LS_MBOX";
 401         case FT_LS_HOST: return "LS_HOST";
 402         case FT_LS_PATH: return "LS_PATH";
 403         case FT_LS_GNAME: return "LS_GNAME";
 404         case FT_LS_NOTE: return "LS_NOTE";
 405         case FT_LS_ADDR: return "LS_ADDR";
 406         case FT_LS_822ADDR: return "LS_822ADDR";
 407         case FT_LS_FRIENDLY: return "LS_FRIENDLY";
 408         case FT_LV_HOSTTYPE: return "LV_HOSTTYPE";
 409         case FT_LV_INGRPF: return "LV_INGRPF";
 410         case FT_LS_UNQUOTE: return "LS_UNQUOTE";
 411         case FT_LV_NOHOSTF: return "LV_NOHOSTF";
 412         case FT_LOCALDATE: return "LOCALDATE";
 413         case FT_GMTDATE: return "GMTDATE";
 414         case FT_PARSEDATE: return "PARSEDATE";
 415         case FT_PARSEADDR: return "PARSEADDR";
 416         case FT_FORMATADDR: return "FORMATADDR";
 417         case FT_CONCATADDR: return "CONCATADDR";
 418         case FT_MYMBOX: return "MYMBOX";
 419         case FT_GETMYMBOX: return "GETMYMBOX";
 420         case FT_GETMYADDR: return "GETMYADDR";
 421         case FT_SAVESTR: return "SAVESTR";
 422         case FT_DONE: return "DONE";
 423         case FT_PAUSE: return "PAUSE";
 424         case FT_NOP: return "NOP";
 425         case FT_GOTO: return "GOTO";
 426         case FT_IF_S_NULL: return "IF_S_NULL";
 427         case FT_IF_S: return "IF_S";
 428         case FT_IF_V_EQ: return "IF_V_EQ";
 429         case FT_IF_V_NE: return "IF_V_NE";
 430         case FT_IF_V_GT: return "IF_V_GT";
 431         case FT_IF_MATCH: return "IF_MATCH";
 432         case FT_IF_AMATCH: return "IF_AMATCH";
 433         case FT_S_NULL: return "S_NULL";
 434         case FT_S_NONNULL: return "S_NONNULL";
 435         case FT_V_EQ: return "V_EQ";
 436         case FT_V_NE: return "V_NE";
 437         case FT_V_GT: return "V_GT";
 438         case FT_V_MATCH: return "V_MATCH";
 439         case FT_V_AMATCH: return "V_AMATCH";
 440         default:
 441                 snprintf(buf, sizeof buf, "/* ??? #%d */", t);
 442                 return buf;
 443         }
 444 }
 445
 446 #define FNORD(v, s) if (t & (v)) { \
 447         if (i++ > 0) \
 448                 strcat(buf, "|"); \
 449         strcat(buf, s); }
 450
 451 static char *
 452 c_typestr(int t)
 453 {
 454         int i;
 455         static char buf[64];
 456
 457         buf[0] = '\0';
 458         if (t & ~(CT_ADDR|CT_DATE))
 459                 snprintf(buf, sizeof buf, "0x%x ", t);
 460         strcat(buf, "<");
 461         i = 0;
 462         FNORD(CT_ADDR, "ADDR");
 463         FNORD(CT_DATE, "DATE");
 464         strcat(buf, ">");
 465         return buf;
 466 }
 467
 468 static char *
 469 c_flagsstr(int t)
 470 {
 471         int i;
 472         static char buf[64];
 473
 474         buf[0] = '\0';
 475         if (t & ~(CF_TRUE|CF_PARSED|CF_DATEFAB|CF_TRIMMED))
 476                 snprintf(buf, sizeof buf, "0x%x ", t);
 477         strcat(buf, "<");
 478         i = 0;
 479         FNORD(CF_TRUE, "TRUE");
 480         FNORD(CF_PARSED, "PARSED");
 481         FNORD(CF_DATEFAB, "DATEFAB");
 482         FNORD(CF_TRIMMED, "TRIMMED");
 483         strcat(buf, ">");
 484         return buf;
 485 }
 486 #undef FNORD
 487
 488 static void
 489 litputs(char *s)
 490 {
 491         if (s) {
 492                 putchar('"');
 493                 while (*s)
 494                         litputc(*s++);
 495                 putchar('"');
 496         } else
 497                 fputs("<nil>", stdout);
 498 }
 499
 500 static void
 501 litputc(char c)
 502 {
 503         if (c & ~ 0177) {
 504                 putchar('M');
 505                 putchar('-');
 506                 c &= 0177;
 507         }
 508         if (c < 0x20 || c == 0177) {
 509                 if (c == '\b') {
 510                         putchar('\\');
 511                         putchar('b');
 512                 } else if (c == '\f') {
 513                         putchar('\\');
 514                         putchar('f');
 515                 } else if (c == '\n') {
 516                         putchar('\\');
 517                         putchar('n');
 518                 } else if (c == '\r') {
 519                         putchar('\\');
 520                         putchar('r');
 521                 } else if (c == '\t') {
 522                         putchar('\\');
 523                         putchar('t');
 524                 } else {
 525                         putchar('^');
 526                         putchar(c ^ 0x40);      /* DEL to ?, others to alpha */
 527                 }
 528         } else
 529                 putchar(c);
 530 }