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/fmt_new.h"
  10 #include "scansbr.h"
  11 #include "sbr/getarguments.h"
  12 #include "sbr/smatch.h"
  13 #include "sbr/ambigsw.h"
  14 #include "sbr/print_version.h"
  15 #include "sbr/print_help.h"
  16 #include "sbr/error.h"
  17 #include "h/fmt_scan.h"
  18 #include "h/fmt_compile.h"
  19 #include "h/done.h"
  20 #include "h/utils.h"
  21
  22 #define FMTDUMP_SWITCHES \
  23     X("form formatfile", 0, FORMSW) \
  24     X("format string", 5, FMTSW) \
  25     X("version", 0, VERSIONSW) \
  26     X("help", 0, HELPSW) \
  27
  28 #define X(sw, minchars, id) id,
  29 DEFINE_SWITCH_ENUM(FMTDUMP);
  30 #undef X
  31
  32 #define X(sw, minchars, id) { sw, minchars, id },
  33 DEFINE_SWITCH_ARRAY(FMTDUMP, switches);
  34 #undef X
  35
  36 /* for assignlabel */
  37 static struct format *lvec[128];
  38 static int lused = 0;
  39
  40 /*
  41  * static prototypes
  42  */
  43 static void fmt_dump (struct format *);
  44 static void dumpone(struct format *);
  45 static int findlabel(struct format *);
  46 static void assignlabel(struct format *);
  47 static char *f_typestr(int);
  48 static char *c_typestr(int);
  49 static char *c_flagsstr(int);
  50 static void litputs(char *);
  51 static void litputc(char);
  52
  53
  54 int
  55 main (int argc, char **argv)
  56 {
  57     char *cp, *form = NULL, *format = NULL;
  58     char buf[BUFSIZ], *nfs, **argp, **arguments;
  59     struct format *fmt;
  60
  61     if (nmh_init(argv[0], true, false)) { return 1; }
  62
  63     arguments = getarguments (invo_name, argc, argv, 1);
  64     argp = arguments;
  65
  66     while ((cp = *argp++)) {
  67         if (*cp == '-') {
  68             switch (smatch (++cp, switches)) {
  69                 case AMBIGSW:
  70                     ambigsw (cp, switches);
  71                     done (1);
  72                 case UNKWNSW:
  73                     die("-%s unknown", cp);
  74
  75                 case HELPSW:
  76                     snprintf (buf, sizeof(buf), "%s [switches]", invo_name);
  77                     print_help (buf, switches, 1);
  78                     done (0);
  79                 case VERSIONSW:
  80                     print_version(invo_name);
  81                     done (0);
  82
  83                 case FORMSW:
  84                     if (!(form = *argp++) || *form == '-')
  85                         die("missing argument to %s", argp[-2]);
  86                     format = NULL;
  87                     continue;
  88                 case FMTSW:
  89                     if (!(format = *argp++) || *format == '-')
  90                         die("missing argument to %s", argp[-2]);
  91                     form = NULL;
  92                     continue;
  93
  94             }
  95         }
  96         if (form)
  97             die("only one form at a time!");
  98         form = cp;
  99     }
 100
 101     /*
 102      * Get new format string.  Must be before chdir().
 103      */
 104     nfs = new_fs (form, format, FORMAT);
 105     (void) fmt_compile(nfs, &fmt, 1);
 106
 107     fmt_dump(fmt);
 108
 109     fmt_free(fmt, 1);
 110
 111     done(0);
 112     return 1;
 113 }
 114
 115 static void
 116 fmt_dump (struct format *fmth)
 117 {
 118         int i;
 119         struct format *fmt, *addr;
 120
 121         /* Assign labels */
 122         for (fmt = fmth; fmt; ++fmt) {
 123                 i = fmt->f_type;
 124                 if (i == FT_IF_S ||
 125                     i == FT_IF_S_NULL ||
 126                     i == FT_IF_V_EQ ||
 127                     i == FT_IF_V_NE ||
 128                     i == FT_IF_V_GT ||
 129                     i == FT_IF_MATCH ||
 130                     i == FT_IF_AMATCH ||
 131                     i == FT_GOTO) {
 132                         addr = fmt + fmt->f_skip;
 133                         if (findlabel(addr) < 0)
 134                                 assignlabel(addr);
 135                 }
 136                 if (fmt->f_type == FT_DONE && fmt->f_value == 0)
 137                         break;
 138         }
 139
 140         /* Dump them out! */
 141         for (fmt = fmth; fmt; ++fmt) {
 142                 dumpone(fmt);
 143                 if (fmt->f_type == FT_DONE && fmt->f_value == 0)
 144                         break;
 145         }
 146 }
 147
 148 static void
 149 dumpone(struct format *fmt)
 150 {
 151         int i;
 152
 153         if ((i = findlabel(fmt)) >= 0)
 154                 printf("L%d:", i);
 155         putchar('\t');
 156
 157         fputs(f_typestr((int)fmt->f_type), stdout);
 158
 159         switch (fmt->f_type) {
 160
 161         case FT_COMP:
 162         case FT_LS_COMP:
 163         case FT_LV_COMPFLAG:
 164         case FT_LV_COMP:
 165                 fputs(", comp ", stdout);
 166                 litputs(fmt->f_comp->c_name);
 167                 if (fmt->f_comp->c_type)
 168                         printf(", c_type %s", c_typestr(fmt->f_comp->c_type));
 169                 if (fmt->f_comp->c_flags)
 170                         printf(", c_flags %s", c_flagsstr(fmt->f_comp->c_flags));
 171                 break;
 172
 173         case FT_LV_SEC:
 174         case FT_LV_MIN:
 175         case FT_LV_HOUR:
 176         case FT_LV_MDAY:
 177         case FT_LV_MON:
 178         case FT_LS_MONTH:
 179         case FT_LS_LMONTH:
 180         case FT_LS_ZONE:
 181         case FT_LV_YEAR:
 182         case FT_LV_WDAY:
 183         case FT_LS_DAY:
 184         case FT_LS_WEEKDAY:
 185         case FT_LV_YDAY:
 186         case FT_LV_ZONE:
 187         case FT_LV_CLOCK:
 188         case FT_LV_RCLOCK:
 189         case FT_LV_DAYF:
 190         case FT_LV_ZONEF:
 191         case FT_LV_DST:
 192         case FT_LS_822DATE:
 193         case FT_LS_PRETTY:
 194         case FT_LOCALDATE:
 195         case FT_GMTDATE:
 196         case FT_PARSEDATE:
 197                 fputs(", c_name ", stdout);
 198                 litputs(fmt->f_comp->c_name);
 199                 if (fmt->f_comp->c_type)
 200                         printf(", c_type %s", c_typestr(fmt->f_comp->c_type));
 201                 if (fmt->f_comp->c_flags)
 202                         printf(", c_flags %s", c_flagsstr(fmt->f_comp->c_flags));
 203                 break;
 204
 205         case FT_LS_ADDR:
 206         case FT_LS_PERS:
 207         case FT_LS_MBOX:
 208         case FT_LS_HOST:
 209         case FT_LS_PATH:
 210         case FT_LS_GNAME:
 211         case FT_LS_NOTE:
 212         case FT_LS_822ADDR:
 213         case FT_LV_HOSTTYPE:
 214         case FT_LV_INGRPF:
 215         case FT_LV_NOHOSTF:
 216         case FT_LS_FRIENDLY:
 217         case FT_PARSEADDR:
 218         case FT_MYMBOX:
 219         case FT_GETMYMBOX:
 220         case FT_GETMYADDR:
 221                 fputs(", c_name ", stdout);
 222                 litputs(fmt->f_comp->c_name);
 223                 if (fmt->f_comp->c_type)
 224                         printf(", c_type %s", c_typestr(fmt->f_comp->c_type));
 225                 if (fmt->f_comp->c_flags)
 226                         printf(", c_flags %s", c_flagsstr(fmt->f_comp->c_flags));
 227                 break;
 228
 229         case FT_COMPF:
 230                 printf(", width %d, fill '", fmt->f_width);
 231                 litputc(fmt->f_fill);
 232                 fputs("' name ", stdout);
 233                 litputs(fmt->f_comp->c_name);
 234                 if (fmt->f_comp->c_type)
 235                         printf(", c_type %s", c_typestr(fmt->f_comp->c_type));
 236                 if (fmt->f_comp->c_flags)
 237                         printf(", c_flags %s", c_flagsstr(fmt->f_comp->c_flags));
 238                 break;
 239
 240         case FT_STRF:
 241         case FT_NUMF:
 242                 printf(", width %d, fill '", fmt->f_width);
 243                 litputc(fmt->f_fill);
 244                 putchar('\'');
 245                 break;
 246
 247         case FT_LIT:
 248                 putchar(' ');
 249                 litputs(fmt->f_text);
 250                 break;
 251
 252         case FT_LITF:
 253                 printf(", width %d, fill '", fmt->f_width);
 254                 litputc(fmt->f_fill);
 255                 fputs("' ", stdout);
 256                 litputs(fmt->f_text);
 257                 break;
 258
 259         case FT_CHAR:
 260                 putchar(' ');
 261                 putchar('\'');
 262                 litputc(fmt->f_char);
 263                 putchar('\'');
 264                 break;
 265
 266
 267         case FT_IF_S:
 268         case FT_IF_S_NULL:
 269         case FT_IF_MATCH:
 270         case FT_IF_AMATCH:
 271                 fputs(" continue else goto", stdout);
 272                 /* FALLTHRU */
 273         case FT_GOTO:
 274                 i = findlabel(fmt + fmt->f_skip);
 275                 printf(" L%d", i);
 276                 break;
 277
 278         case FT_IF_V_EQ:
 279         case FT_IF_V_NE:
 280         case FT_IF_V_GT:
 281                 i = findlabel(fmt + fmt->f_skip);
 282                 printf(" %d continue else goto L%d", fmt->f_value, i);
 283                 break;
 284
 285         case FT_V_EQ:
 286         case FT_V_NE:
 287         case FT_V_GT:
 288         case FT_LV_LIT:
 289         case FT_LV_PLUS_L:
 290         case FT_LV_MINUS_L:
 291         case FT_LV_MULTIPLY_L:
 292         case FT_LV_DIVIDE_L:
 293         case FT_LV_MODULO_L:
 294                 printf(" value %d", fmt->f_value);
 295                 break;
 296
 297         case FT_LS_LIT:
 298                 fputs(" str ", stdout);
 299                 litputs(fmt->f_text);
 300                 break;
 301
 302         case FT_LS_GETENV:
 303                 fputs(" getenv ", stdout);
 304                 litputs(fmt->f_text);
 305                 break;
 306
 307         case FT_LS_DECODECOMP:
 308                 fputs(", comp ", stdout);
 309                 litputs(fmt->f_comp->c_name);
 310                 break;
 311
 312         case FT_LS_DECODE:
 313                 break;
 314
 315         case FT_LS_TRIM:
 316                 printf(", width %d", fmt->f_width);
 317                 break;
 318
 319         case FT_LV_DAT:
 320                 printf(", value dat[%d]", fmt->f_value);
 321                 break;
 322         }
 323         putchar('\n');
 324 }
 325
 326 static int
 327 findlabel(struct format *addr)
 328 {
 329         int i;
 330
 331         for (i = 0; i < lused; ++i)
 332                 if (addr == lvec[i])
 333                         return i;
 334         return -1;
 335 }
 336
 337 static void
 338 assignlabel(struct format *addr)
 339 {
 340         lvec[lused++] = addr;
 341 }
 342
 343 static char *
 344 f_typestr(int t)
 345 {
 346         static char buf[32];
 347
 348         switch (t) {
 349         case FT_COMP: return "COMP";
 350         case FT_COMPF: return "COMPF";
 351         case FT_LIT: return "LIT";
 352         case FT_LITF: return "LITF";
 353         case FT_CHAR: return "CHAR";
 354         case FT_NUM: return "NUM";
 355         case FT_NUMF: return "NUMF";
 356         case FT_STR: return "STR";
 357         case FT_STRF: return "STRF";
 358         case FT_STRFW: return "STRFW";
 359         case FT_STRLIT: return "STRLIT";
 360         case FT_STRLITZ: return "STRLITZ";
 361         case FT_PUTADDR: return "PUTADDR";
 362         case FT_LS_COMP: return "LS_COMP";
 363         case FT_LS_LIT: return "LS_LIT";
 364         case FT_LS_GETENV: return "LS_GETENV";
 365         case FT_LS_CFIND: return "LS_CFIND";
 366         case FT_LS_DECODECOMP: return "LS_DECODECOMP";
 367         case FT_LS_DECODE: return "LS_DECODE";
 368         case FT_LS_TRIM: return "LS_TRIM";
 369         case FT_LV_COMP: return "LV_COMP";
 370         case FT_LV_COMPFLAG: return "LV_COMPFLAG";
 371         case FT_LV_LIT: return "LV_LIT";
 372         case FT_LV_DAT: return "LV_DAT";
 373         case FT_LV_STRLEN: return "LV_STRLEN";
 374         case FT_LV_PLUS_L: return "LV_PLUS_L";
 375         case FT_LV_MINUS_L: return "LV_MINUS_L";
 376         case FT_LV_MULTIPLY_L: return "LV_MULTIPLY_L";
 377         case FT_LV_DIVIDE_L: return "LV_DIVIDE_L";
 378         case FT_LV_MODULO_L: return "LV_MODULO_L";
 379         case FT_LV_CHAR_LEFT: return "LV_CHAR_LEFT";
 380         case FT_LS_MONTH: return "LS_MONTH";
 381         case FT_LS_LMONTH: return "LS_LMONTH";
 382         case FT_LS_ZONE: return "LS_ZONE";
 383         case FT_LS_DAY: return "LS_DAY";
 384         case FT_LS_WEEKDAY: return "LS_WEEKDAY";
 385         case FT_LS_822DATE: return "LS_822DATE";
 386         case FT_LS_PRETTY: return "LS_PRETTY";
 387         case FT_LS_KILO: return "LS_KILO";
 388         case FT_LS_KIBI: return "LS_KIBI";
 389         case FT_LV_SEC: return "LV_SEC";
 390         case FT_LV_MIN: return "LV_MIN";
 391         case FT_LV_HOUR: return "LV_HOUR";
 392         case FT_LV_MDAY: return "LV_MDAY";
 393         case FT_LV_MON: return "LV_MON";
 394         case FT_LV_YEAR: return "LV_YEAR";
 395         case FT_LV_YDAY: return "LV_YDAY";
 396         case FT_LV_WDAY: return "LV_WDAY";
 397         case FT_LV_ZONE: return "LV_ZONE";
 398         case FT_LV_CLOCK: return "LV_CLOCK";
 399         case FT_LV_RCLOCK: return "LV_RCLOCK";
 400         case FT_LV_DAYF: return "LV_DAYF";
 401         case FT_LV_DST: return "LV_DST";
 402         case FT_LV_ZONEF: return "LV_ZONEF";
 403         case FT_LS_PERS: return "LS_PERS";
 404         case FT_LS_MBOX: return "LS_MBOX";
 405         case FT_LS_HOST: return "LS_HOST";
 406         case FT_LS_PATH: return "LS_PATH";
 407         case FT_LS_GNAME: return "LS_GNAME";
 408         case FT_LS_NOTE: return "LS_NOTE";
 409         case FT_LS_ADDR: return "LS_ADDR";
 410         case FT_LS_822ADDR: return "LS_822ADDR";
 411         case FT_LS_FRIENDLY: return "LS_FRIENDLY";
 412         case FT_LV_HOSTTYPE: return "LV_HOSTTYPE";
 413         case FT_LV_INGRPF: return "LV_INGRPF";
 414         case FT_LS_UNQUOTE: return "LS_UNQUOTE";
 415         case FT_LV_NOHOSTF: return "LV_NOHOSTF";
 416         case FT_LOCALDATE: return "LOCALDATE";
 417         case FT_GMTDATE: return "GMTDATE";
 418         case FT_PARSEDATE: return "PARSEDATE";
 419         case FT_PARSEADDR: return "PARSEADDR";
 420         case FT_FORMATADDR: return "FORMATADDR";
 421         case FT_CONCATADDR: return "CONCATADDR";
 422         case FT_MYMBOX: return "MYMBOX";
 423         case FT_GETMYMBOX: return "GETMYMBOX";
 424         case FT_GETMYADDR: return "GETMYADDR";
 425         case FT_SAVESTR: return "SAVESTR";
 426         case FT_DONE: return "DONE";
 427         case FT_PAUSE: return "PAUSE";
 428         case FT_NOP: return "NOP";
 429         case FT_GOTO: return "GOTO";
 430         case FT_IF_S_NULL: return "IF_S_NULL";
 431         case FT_IF_S: return "IF_S";
 432         case FT_IF_V_EQ: return "IF_V_EQ";
 433         case FT_IF_V_NE: return "IF_V_NE";
 434         case FT_IF_V_GT: return "IF_V_GT";
 435         case FT_IF_MATCH: return "IF_MATCH";
 436         case FT_IF_AMATCH: return "IF_AMATCH";
 437         case FT_S_NULL: return "S_NULL";
 438         case FT_S_NONNULL: return "S_NONNULL";
 439         case FT_V_EQ: return "V_EQ";
 440         case FT_V_NE: return "V_NE";
 441         case FT_V_GT: return "V_GT";
 442         case FT_V_MATCH: return "V_MATCH";
 443         case FT_V_AMATCH: return "V_AMATCH";
 444         default:
 445                 snprintf(buf, sizeof buf, "/* ??? #%d */", t);
 446                 return buf;
 447         }
 448 }
 449
 450 #define FNORD(v, s) if (t & (v)) { \
 451         if (i++ > 0) \
 452                 strcat(buf, "|"); \
 453         strcat(buf, s); }
 454
 455 static char *
 456 c_typestr(int t)
 457 {
 458         int i;
 459         static char buf[64];
 460
 461         buf[0] = '\0';
 462         if (t & ~(CT_ADDR|CT_DATE))
 463                 snprintf(buf, sizeof buf, "0x%x ", t);
 464         strcat(buf, "<");
 465         i = 0;
 466         FNORD(CT_ADDR, "ADDR");
 467         FNORD(CT_DATE, "DATE");
 468         strcat(buf, ">");
 469         return buf;
 470 }
 471
 472 static char *
 473 c_flagsstr(int t)
 474 {
 475         int i;
 476         static char buf[64];
 477
 478         buf[0] = '\0';
 479         if (t & ~(CF_TRUE|CF_PARSED|CF_DATEFAB|CF_TRIMMED))
 480                 snprintf(buf, sizeof buf, "0x%x ", t);
 481         strcat(buf, "<");
 482         i = 0;
 483         FNORD(CF_TRUE, "TRUE");
 484         FNORD(CF_PARSED, "PARSED");
 485         FNORD(CF_DATEFAB, "DATEFAB");
 486         FNORD(CF_TRIMMED, "TRIMMED");
 487         strcat(buf, ">");
 488         return buf;
 489 }
 490 #undef FNORD
 491
 492 static void
 493 litputs(char *s)
 494 {
 495         if (s) {
 496                 putchar('"');
 497                 while (*s)
 498                         litputc(*s++);
 499                 putchar('"');
 500         } else
 501                 fputs("<nil>", stdout);
 502 }
 503
 504 static void
 505 litputc(char c)
 506 {
 507         if (c & ~ 0177) {
 508                 putchar('M');
 509                 putchar('-');
 510                 c &= 0177;
 511         }
 512         if (c < 0x20 || c == 0177) {
 513                 if (c == '\b') {
 514                         putchar('\\');
 515                         putchar('b');
 516                 } else if (c == '\f') {
 517                         putchar('\\');
 518                         putchar('f');
 519                 } else if (c == '\n') {
 520                         putchar('\\');
 521                         putchar('n');
 522                 } else if (c == '\r') {
 523                         putchar('\\');
 524                         putchar('r');
 525                 } else if (c == '\t') {
 526                         putchar('\\');
 527                         putchar('t');
 528                 } else {
 529                         putchar('^');
 530                         putchar(c ^ 0x40);      /* DEL to ?, others to alpha */
 531                 }
 532         } else
 533                 putchar(c);
 534 }