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