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 "scansbr.h"
  10 #include "sbr/getarguments.h"
  11 #include "sbr/smatch.h"
  12 #include "sbr/ambigsw.h"
  13 #include "sbr/print_version.h"
  14 #include "sbr/print_help.h"
  15 #include "sbr/error.h"
  16 #include "h/fmt_scan.h"
  17 #include "h/fmt_compile.h"
  18 #include "h/done.h"
  19 #include "h/utils.h"
  20
  21 #define FMTDUMP_SWITCHES \
  22     X("form formatfile", 0, FORMSW) \
  23     X("format string", 5, FMTSW) \
  24     X("version", 0, VERSIONSW) \
  25     X("help", 0, HELPSW) \
  26
  27 #define X(sw, minchars, id) id,
  28 DEFINE_SWITCH_ENUM(FMTDUMP);
  29 #undef X
  30
  31 #define X(sw, minchars, id) { sw, minchars, id },
  32 DEFINE_SWITCH_ARRAY(FMTDUMP, switches);
  33 #undef X
  34
  35 /* for assignlabel */
  36 static struct format *lvec[128];
  37 static int lused = 0;
  38
  39 /*
  40  * static prototypes
  41  */
  42 static void fmt_dump (struct format *);
  43 static void dumpone(struct format *);
  44 static int findlabel(struct format *);
  45 static void assignlabel(struct format *);
  46 static char *f_typestr(int);
  47 static char *c_typestr(int);
  48 static char *c_flagsstr(int);
  49 static void litputs(char *);
  50 static void litputc(char);
  51
  52
  53 int
  54 main (int argc, char **argv)
  55 {
  56     char *cp, *form = NULL, *format = NULL;
  57     char buf[BUFSIZ], *nfs, **argp, **arguments;
  58     struct format *fmt;
  59
  60     if (nmh_init(argv[0], true, false)) { return 1; }
  61
  62     arguments = getarguments (invo_name, argc, argv, 1);
  63     argp = arguments;
  64
  65     while ((cp = *argp++)) {
  66         if (*cp == '-') {
  67             switch (smatch (++cp, switches)) {
  68                 case AMBIGSW:
  69                     ambigsw (cp, switches);
  70                     done (1);
  71                 case UNKWNSW:
  72                     die("-%s unknown", cp);
  73
  74                 case HELPSW:
  75                     snprintf (buf, sizeof(buf), "%s [switches]", invo_name);
  76                     print_help (buf, switches, 1);
  77                     done (0);
  78                 case VERSIONSW:
  79                     print_version(invo_name);
  80                     done (0);
  81
  82                 case FORMSW:
  83                     if (!(form = *argp++) || *form == '-')
  84                         die("missing argument to %s", argp[-2]);
  85                     format = NULL;
  86                     continue;
  87                 case FMTSW:
  88                     if (!(format = *argp++) || *format == '-')
  89                         die("missing argument to %s", argp[-2]);
  90                     form = NULL;
  91                     continue;
  92
  93             }
  94         }
  95         if (form)
  96             die("only one form at a time!");
  97         form = cp;
  98     }
  99
 100     /*
 101      * Get new format string.  Must be before chdir().
 102      */
 103     nfs = new_fs (form, format, FORMAT);
 104     (void) fmt_compile(nfs, &fmt, 1);
 105
 106     fmt_dump(fmt);
 107
 108     fmt_free(fmt, 1);
 109
 110     done(0);
 111     return 1;
 112 }
 113
 114 static void
 115 fmt_dump (struct format *fmth)
 116 {
 117         int i;
 118         struct format *fmt, *addr;
 119
 120         /* Assign labels */
 121         for (fmt = fmth; fmt; ++fmt) {
 122                 i = fmt->f_type;
 123                 if (i == FT_IF_S ||
 124                     i == FT_IF_S_NULL ||
 125                     i == FT_IF_V_EQ ||
 126                     i == FT_IF_V_NE ||
 127                     i == FT_IF_V_GT ||
 128                     i == FT_IF_MATCH ||
 129                     i == FT_IF_AMATCH ||
 130                     i == FT_GOTO) {
 131                         addr = fmt + fmt->f_skip;
 132                         if (findlabel(addr) < 0)
 133                                 assignlabel(addr);
 134                 }
 135                 if (fmt->f_type == FT_DONE && fmt->f_value == 0)
 136                         break;
 137         }
 138
 139         /* Dump them out! */
 140         for (fmt = fmth; fmt; ++fmt) {
 141                 dumpone(fmt);
 142                 if (fmt->f_type == FT_DONE && fmt->f_value == 0)
 143                         break;
 144         }
 145 }
 146
 147 static void
 148 dumpone(struct format *fmt)
 149 {
 150         int i;
 151
 152         if ((i = findlabel(fmt)) >= 0)
 153                 printf("L%d:", i);
 154         putchar('\t');
 155
 156         fputs(f_typestr((int)fmt->f_type), stdout);
 157
 158         switch (fmt->f_type) {
 159
 160         case FT_COMP:
 161         case FT_LS_COMP:
 162         case FT_LV_COMPFLAG:
 163         case FT_LV_COMP:
 164                 fputs(", comp ", stdout);
 165                 litputs(fmt->f_comp->c_name);
 166                 if (fmt->f_comp->c_type)
 167                         printf(", c_type %s", c_typestr(fmt->f_comp->c_type));
 168                 if (fmt->f_comp->c_flags)
 169                         printf(", c_flags %s", c_flagsstr(fmt->f_comp->c_flags));
 170                 break;
 171
 172         case FT_LV_SEC:
 173         case FT_LV_MIN:
 174         case FT_LV_HOUR:
 175         case FT_LV_MDAY:
 176         case FT_LV_MON:
 177         case FT_LS_MONTH:
 178         case FT_LS_LMONTH:
 179         case FT_LS_ZONE:
 180         case FT_LV_YEAR:
 181         case FT_LV_WDAY:
 182         case FT_LS_DAY:
 183         case FT_LS_WEEKDAY:
 184         case FT_LV_YDAY:
 185         case FT_LV_ZONE:
 186         case FT_LV_CLOCK:
 187         case FT_LV_RCLOCK:
 188         case FT_LV_DAYF:
 189         case FT_LV_ZONEF:
 190         case FT_LV_DST:
 191         case FT_LS_822DATE:
 192         case FT_LS_PRETTY:
 193         case FT_LOCALDATE:
 194         case FT_GMTDATE:
 195         case FT_PARSEDATE:
 196                 fputs(", c_name ", stdout);
 197                 litputs(fmt->f_comp->c_name);
 198                 if (fmt->f_comp->c_type)
 199                         printf(", c_type %s", c_typestr(fmt->f_comp->c_type));
 200                 if (fmt->f_comp->c_flags)
 201                         printf(", c_flags %s", c_flagsstr(fmt->f_comp->c_flags));
 202                 break;
 203
 204         case FT_LS_ADDR:
 205         case FT_LS_PERS:
 206         case FT_LS_MBOX:
 207         case FT_LS_HOST:
 208         case FT_LS_PATH:
 209         case FT_LS_GNAME:
 210         case FT_LS_NOTE:
 211         case FT_LS_822ADDR:
 212         case FT_LV_HOSTTYPE:
 213         case FT_LV_INGRPF:
 214         case FT_LV_NOHOSTF:
 215         case FT_LS_FRIENDLY:
 216         case FT_PARSEADDR:
 217         case FT_MYMBOX:
 218         case FT_GETMYMBOX:
 219         case FT_GETMYADDR:
 220                 fputs(", c_name ", stdout);
 221                 litputs(fmt->f_comp->c_name);
 222                 if (fmt->f_comp->c_type)
 223                         printf(", c_type %s", c_typestr(fmt->f_comp->c_type));
 224                 if (fmt->f_comp->c_flags)
 225                         printf(", c_flags %s", c_flagsstr(fmt->f_comp->c_flags));
 226                 break;
 227
 228         case FT_COMPF:
 229                 printf(", width %d, fill '", fmt->f_width);
 230                 litputc(fmt->f_fill);
 231                 fputs("' name ", stdout);
 232                 litputs(fmt->f_comp->c_name);
 233                 if (fmt->f_comp->c_type)
 234                         printf(", c_type %s", c_typestr(fmt->f_comp->c_type));
 235                 if (fmt->f_comp->c_flags)
 236                         printf(", c_flags %s", c_flagsstr(fmt->f_comp->c_flags));
 237                 break;
 238
 239         case FT_STRF:
 240         case FT_NUMF:
 241                 printf(", width %d, fill '", fmt->f_width);
 242                 litputc(fmt->f_fill);
 243                 putchar('\'');
 244                 break;
 245
 246         case FT_LIT:
 247                 putchar(' ');
 248                 litputs(fmt->f_text);
 249                 break;
 250
 251         case FT_LITF:
 252                 printf(", width %d, fill '", fmt->f_width);
 253                 litputc(fmt->f_fill);
 254                 fputs("' ", stdout);
 255                 litputs(fmt->f_text);
 256                 break;
 257
 258         case FT_CHAR:
 259                 putchar(' ');
 260                 putchar('\'');
 261                 litputc(fmt->f_char);
 262                 putchar('\'');
 263                 break;
 264
 265
 266         case FT_IF_S:
 267         case FT_IF_S_NULL:
 268         case FT_IF_MATCH:
 269         case FT_IF_AMATCH:
 270                 fputs(" continue else goto", stdout);
 271                 /* FALLTHRU */
 272         case FT_GOTO:
 273                 i = findlabel(fmt + fmt->f_skip);
 274                 printf(" L%d", i);
 275                 break;
 276
 277         case FT_IF_V_EQ:
 278         case FT_IF_V_NE:
 279         case FT_IF_V_GT:
 280                 i = findlabel(fmt + fmt->f_skip);
 281                 printf(" %d continue else goto L%d", fmt->f_value, i);
 282                 break;
 283
 284         case FT_V_EQ:
 285         case FT_V_NE:
 286         case FT_V_GT:
 287         case FT_LV_LIT:
 288         case FT_LV_PLUS_L:
 289         case FT_LV_MINUS_L:
 290         case FT_LV_MULTIPLY_L:
 291         case FT_LV_DIVIDE_L:
 292         case FT_LV_MODULO_L:
 293                 printf(" value %d", fmt->f_value);
 294                 break;
 295
 296         case FT_LS_LIT:
 297                 fputs(" str ", stdout);
 298                 litputs(fmt->f_text);
 299                 break;
 300
 301         case FT_LS_GETENV:
 302                 fputs(" getenv ", stdout);
 303                 litputs(fmt->f_text);
 304                 break;
 305
 306         case FT_LS_DECODECOMP:
 307                 fputs(", comp ", stdout);
 308                 litputs(fmt->f_comp->c_name);
 309                 break;
 310
 311         case FT_LS_DECODE:
 312                 break;
 313
 314         case FT_LS_TRIM:
 315                 printf(", width %d", fmt->f_width);
 316                 break;
 317
 318         case FT_LV_DAT:
 319                 printf(", value dat[%d]", fmt->f_value);
 320                 break;
 321         }
 322         putchar('\n');
 323 }
 324
 325 static int
 326 findlabel(struct format *addr)
 327 {
 328         int i;
 329
 330         for (i = 0; i < lused; ++i)
 331                 if (addr == lvec[i])
 332                         return i;
 333         return -1;
 334 }
 335
 336 static void
 337 assignlabel(struct format *addr)
 338 {
 339         lvec[lused++] = addr;
 340 }
 341
 342 static char *
 343 f_typestr(int t)
 344 {
 345         static char buf[32];
 346
 347         switch (t) {
 348         case FT_COMP: return "COMP";
 349         case FT_COMPF: return "COMPF";
 350         case FT_LIT: return "LIT";
 351         case FT_LITF: return "LITF";
 352         case FT_CHAR: return "CHAR";
 353         case FT_NUM: return "NUM";
 354         case FT_NUMF: return "NUMF";
 355         case FT_STR: return "STR";
 356         case FT_STRF: return "STRF";
 357         case FT_STRFW: return "STRFW";
 358         case FT_STRLIT: return "STRLIT";
 359         case FT_STRLITZ: return "STRLITZ";
 360         case FT_PUTADDR: return "PUTADDR";
 361         case FT_LS_COMP: return "LS_COMP";
 362         case FT_LS_LIT: return "LS_LIT";
 363         case FT_LS_GETENV: return "LS_GETENV";
 364         case FT_LS_CFIND: return "LS_CFIND";
 365         case FT_LS_DECODECOMP: return "LS_DECODECOMP";
 366         case FT_LS_DECODE: return "LS_DECODE";
 367         case FT_LS_TRIM: return "LS_TRIM";
 368         case FT_LV_COMP: return "LV_COMP";
 369         case FT_LV_COMPFLAG: return "LV_COMPFLAG";
 370         case FT_LV_LIT: return "LV_LIT";
 371         case FT_LV_DAT: return "LV_DAT";
 372         case FT_LV_STRLEN: return "LV_STRLEN";
 373         case FT_LV_PLUS_L: return "LV_PLUS_L";
 374         case FT_LV_MINUS_L: return "LV_MINUS_L";
 375         case FT_LV_MULTIPLY_L: return "LV_MULTIPLY_L";
 376         case FT_LV_DIVIDE_L: return "LV_DIVIDE_L";
 377         case FT_LV_MODULO_L: return "LV_MODULO_L";
 378         case FT_LV_CHAR_LEFT: return "LV_CHAR_LEFT";
 379         case FT_LS_MONTH: return "LS_MONTH";
 380         case FT_LS_LMONTH: return "LS_LMONTH";
 381         case FT_LS_ZONE: return "LS_ZONE";
 382         case FT_LS_DAY: return "LS_DAY";
 383         case FT_LS_WEEKDAY: return "LS_WEEKDAY";
 384         case FT_LS_822DATE: return "LS_822DATE";
 385         case FT_LS_PRETTY: return "LS_PRETTY";
 386         case FT_LS_KILO: return "LS_KILO";
 387         case FT_LS_KIBI: return "LS_KIBI";
 388         case FT_LV_SEC: return "LV_SEC";
 389         case FT_LV_MIN: return "LV_MIN";
 390         case FT_LV_HOUR: return "LV_HOUR";
 391         case FT_LV_MDAY: return "LV_MDAY";
 392         case FT_LV_MON: return "LV_MON";
 393         case FT_LV_YEAR: return "LV_YEAR";
 394         case FT_LV_YDAY: return "LV_YDAY";
 395         case FT_LV_WDAY: return "LV_WDAY";
 396         case FT_LV_ZONE: return "LV_ZONE";
 397         case FT_LV_CLOCK: return "LV_CLOCK";
 398         case FT_LV_RCLOCK: return "LV_RCLOCK";
 399         case FT_LV_DAYF: return "LV_DAYF";
 400         case FT_LV_DST: return "LV_DST";
 401         case FT_LV_ZONEF: return "LV_ZONEF";
 402         case FT_LS_PERS: return "LS_PERS";
 403         case FT_LS_MBOX: return "LS_MBOX";
 404         case FT_LS_HOST: return "LS_HOST";
 405         case FT_LS_PATH: return "LS_PATH";
 406         case FT_LS_GNAME: return "LS_GNAME";
 407         case FT_LS_NOTE: return "LS_NOTE";
 408         case FT_LS_ADDR: return "LS_ADDR";
 409         case FT_LS_822ADDR: return "LS_822ADDR";
 410         case FT_LS_FRIENDLY: return "LS_FRIENDLY";
 411         case FT_LV_HOSTTYPE: return "LV_HOSTTYPE";
 412         case FT_LV_INGRPF: return "LV_INGRPF";
 413         case FT_LS_UNQUOTE: return "LS_UNQUOTE";
 414         case FT_LV_NOHOSTF: return "LV_NOHOSTF";
 415         case FT_LOCALDATE: return "LOCALDATE";
 416         case FT_GMTDATE: return "GMTDATE";
 417         case FT_PARSEDATE: return "PARSEDATE";
 418         case FT_PARSEADDR: return "PARSEADDR";
 419         case FT_FORMATADDR: return "FORMATADDR";
 420         case FT_CONCATADDR: return "CONCATADDR";
 421         case FT_MYMBOX: return "MYMBOX";
 422         case FT_GETMYMBOX: return "GETMYMBOX";
 423         case FT_GETMYADDR: return "GETMYADDR";
 424         case FT_SAVESTR: return "SAVESTR";
 425         case FT_DONE: return "DONE";
 426         case FT_PAUSE: return "PAUSE";
 427         case FT_NOP: return "NOP";
 428         case FT_GOTO: return "GOTO";
 429         case FT_IF_S_NULL: return "IF_S_NULL";
 430         case FT_IF_S: return "IF_S";
 431         case FT_IF_V_EQ: return "IF_V_EQ";
 432         case FT_IF_V_NE: return "IF_V_NE";
 433         case FT_IF_V_GT: return "IF_V_GT";
 434         case FT_IF_MATCH: return "IF_MATCH";
 435         case FT_IF_AMATCH: return "IF_AMATCH";
 436         case FT_S_NULL: return "S_NULL";
 437         case FT_S_NONNULL: return "S_NONNULL";
 438         case FT_V_EQ: return "V_EQ";
 439         case FT_V_NE: return "V_NE";
 440         case FT_V_GT: return "V_GT";
 441         case FT_V_MATCH: return "V_MATCH";
 442         case FT_V_AMATCH: return "V_AMATCH";
 443         default:
 444                 snprintf(buf, sizeof buf, "/* ??? #%d */", t);
 445                 return buf;
 446         }
 447 }
 448
 449 #define FNORD(v, s) if (t & (v)) { \
 450         if (i++ > 0) \
 451                 strcat(buf, "|"); \
 452         strcat(buf, s); }
 453
 454 static char *
 455 c_typestr(int t)
 456 {
 457         int i;
 458         static char buf[64];
 459
 460         buf[0] = '\0';
 461         if (t & ~(CT_ADDR|CT_DATE))
 462                 snprintf(buf, sizeof buf, "0x%x ", t);
 463         strcat(buf, "<");
 464         i = 0;
 465         FNORD(CT_ADDR, "ADDR");
 466         FNORD(CT_DATE, "DATE");
 467         strcat(buf, ">");
 468         return buf;
 469 }
 470
 471 static char *
 472 c_flagsstr(int t)
 473 {
 474         int i;
 475         static char buf[64];
 476
 477         buf[0] = '\0';
 478         if (t & ~(CF_TRUE|CF_PARSED|CF_DATEFAB|CF_TRIMMED))
 479                 snprintf(buf, sizeof buf, "0x%x ", t);
 480         strcat(buf, "<");
 481         i = 0;
 482         FNORD(CF_TRUE, "TRUE");
 483         FNORD(CF_PARSED, "PARSED");
 484         FNORD(CF_DATEFAB, "DATEFAB");
 485         FNORD(CF_TRIMMED, "TRIMMED");
 486         strcat(buf, ">");
 487         return buf;
 488 }
 489 #undef FNORD
 490
 491 static void
 492 litputs(char *s)
 493 {
 494         if (s) {
 495                 putchar('"');
 496                 while (*s)
 497                         litputc(*s++);
 498                 putchar('"');
 499         } else
 500                 fputs("<nil>", stdout);
 501 }
 502
 503 static void
 504 litputc(char c)
 505 {
 506         if (c & ~ 0177) {
 507                 putchar('M');
 508                 putchar('-');
 509                 c &= 0177;
 510         }
 511         if (c < 0x20 || c == 0177) {
 512                 if (c == '\b') {
 513                         putchar('\\');
 514                         putchar('b');
 515                 } else if (c == '\f') {
 516                         putchar('\\');
 517                         putchar('f');
 518                 } else if (c == '\n') {
 519                         putchar('\\');
 520                         putchar('n');
 521                 } else if (c == '\r') {
 522                         putchar('\\');
 523                         putchar('r');
 524                 } else if (c == '\t') {
 525                         putchar('\\');
 526                         putchar('t');
 527                 } else {
 528                         putchar('^');
 529                         putchar(c ^ 0x40);      /* DEL to ?, others to alpha */
 530                 }
 531         } else
 532                 putchar(c);
 533 }