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