src/builtins.c

   1 /*
   2  * Copyright 1993-2002 Christopher Seiwald and Perforce Software, Inc.
   3  * This file is part of Jam - see jam.c for Copyright information.
   4  *
   5  * This program is free software: you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation, either version 3 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  */
  18 /*
  19  * builtins.c - builtin jam rules
  20  *
  21  * External routines:
  22  *
  23  *  load_builtin() - define builtin rules
  24  *
  25  * Internal routines:
  26  *
  27  *  builtin_depends() - DEPENDS/INCLUDES rule
  28  *  builtin_echo() - ECHO rule
  29  *  builtin_exit() - EXIT rule
  30  *  builtin_flags() - NOCARE, NOTFILE, TEMPORARY rule
  31  *  builtin_glob() - GLOB rule
  32  *  builtin_match() - MATCH rule
  33  *  builtin_hdrmacro() - HDRMACRO rule
  34  */
  35 #include <limits.h>
  36 #include <stdarg.h>
  37 #include <stdint.h>
  38 #include <strings.h>
  39 #include <unistd.h>
  40
  41 #include "jam.h"
  42
  43 #include "lists.h"
  44 #include "parse.h"
  45 #include "bjprng.h"
  46 #include "builtins.h"
  47 #include "rules.h"
  48 #include "filesys.h"
  49 #include "newstr.h"
  50 #include "re9.h"
  51 #include "pathsys.h"
  52 #include "hdrmacro.h"
  53 #include "matchglob.h"
  54 #include "dstrings.h"
  55
  56
  57 /*
  58  * builtin_depends() - DEPENDS/INCLUDES rule
  59  *
  60  * The DEPENDS builtin rule appends each of the listed sources on the
  61  * dependency list of each of the listed targets.
  62  * It binds both the targets and sources as TARGETs.
  63  */
  64 static LIST *builtin_depends (PARSE *parse, LOL *args, int *jmp) {
  65   LIST *targets = lol_get(args, 0);
  66   LIST *sources = lol_get(args, 1);
  67   for (LIST *l = targets; l; l = list_next(l)) {
  68     TARGET *t = bindtarget(l->string);
  69     /* If doing INCLUDES, switch to the TARGET's include TARGET, creating it if needed.
  70      * The internal include TARGET shares the name of its parent. */
  71     if (parse->num) {
  72       if (!t->includes) t->includes = copytarget(t);
  73       t = t->includes;
  74     }
  75     t->depends = targetlist(t->depends, sources);
  76   }
  77   return L0;
  78 }
  79
  80
  81 typedef struct {
  82   int no_newline;
  83   int no_out;
  84   int flags;
  85   FILE *stream;
  86 } echo_flags_t;
  87
  88
  89 static void parse_echo_flags (echo_flags_t *flg, const LIST *l) {
  90   flg->no_newline = 0;
  91   flg->no_out = 0;
  92   flg->flags = LPFLAG_NO_TRSPACE;
  93   flg->stream = stdout;
  94   for (; l; l = list_next(l)) {
  95     const char *s = l->string;
  96     if (*s == '-') {
  97       for (++s; *s; ++s) {
  98         switch (*s) {
  99           case 'n': flg->no_newline = 1; break;
 100           case 'Q': flg->no_out = 1; break;
 101           case 'S': flg->flags |= LPFLAG_NO_SPACES; break;
 102           case 's': flg->flags &= ~LPFLAG_NO_TRSPACE; break;
 103           case 'w': flg->stream = stderr; break;
 104         }
 105       }
 106     }
 107   }
 108 }
 109
 110
 111 /*
 112  * builtin_echo() - ECHO rule
 113  *
 114  * The ECHO builtin rule echoes the targets to the user.
 115  * No other actions are taken.
 116  */
 117 static LIST *builtin_echo (PARSE *parse, LOL *args, int *jmp) {
 118   echo_flags_t ef;
 119   parse_echo_flags(&ef, lol_get(args, 1));
 120   if (!ef.no_out) list_print_ex(ef.stream, lol_get(args, 0), ef.flags);
 121   if (!ef.no_newline) fputc('\n', ef.stream); else fflush(ef.stream);
 122   return L0;
 123 }
 124
 125
 126 /*
 127  * builtin_exit() - EXIT rule
 128  *
 129  * The EXIT builtin rule echoes the targets to the user and exits
 130  * the program with a failure status.
 131  */
 132 static LIST *builtin_exit (PARSE *parse, LOL *args, int *jmp) {
 133   LIST *l = lol_get(args, 0);
 134   echo_flags_t ef;
 135   parse_echo_flags(&ef, lol_get(args, 1));
 136   if (l != NULL) {
 137     if (!ef.no_out) list_print_ex(ef.stream, l, ef.flags);
 138     if (!ef.no_newline) fputc('\n', ef.stream); else fflush(ef.stream);
 139     exit(EXITBAD); /* yeech */
 140   }
 141   exit(EXITOK);
 142 #if __GNUC__ <= 2
 143   return L0;
 144 #endif
 145 }
 146
 147
 148 /*
 149  * builtin_flags() - NOCARE, NOTFILE, TEMPORARY rule
 150  *
 151  * Builtin_flags() marks the target with the appropriate flag, for use by make0().
 152  * It binds each target as a TARGET.
 153  */
 154 static LIST *builtin_flags (PARSE *parse, LOL *args, int *jmp) {
 155   LIST *l = lol_get(args, 0);
 156   int flag = parse->num, andflag = ~0;
 157   switch (flag) {
 158     case T_FLAG_NOCARE: andflag = ~T_FLAG_FORCECARE; break;
 159     case T_FLAG_FORCECARE: andflag = ~T_FLAG_NOCARE; break;
 160     case 666: flag = 0; andflag = ~T_FLAG_NOTFILE; break;
 161   }
 162   for (; l; l = list_next(l)) {
 163     TARGET *t = bindtarget(l->string);
 164     t->flags |= flag;
 165     t->flags &= andflag;
 166   }
 167   return L0;
 168 }
 169
 170
 171 typedef enum {
 172   GLOB_ANY,
 173   GLOB_DIRS,
 174   GLOB_FILES
 175 } glob_mode;
 176
 177
 178 /*
 179  * builtin_globbing() - GLOB rule
 180  */
 181 struct globbing {
 182   LIST *patterns;
 183   LIST *results;
 184   int casesens;
 185   int cmptype; // <0:glob; 0: plain; >0:# of regexps
 186   glob_mode mode;
 187   int namesonly;
 188   regexp_t **re;
 189 };
 190
 191
 192 static void builtin_glob_back (void  *closure, const char *file, int status, time_t time) {
 193   struct globbing *globbing = (struct globbing *)closure;
 194   LIST *l;
 195   PATHNAME f;
 196   static char buf[MAXJPATH];
 197   /* null out directory for matching */
 198   /* we wish we had file_dirscan() pass up a PATHNAME */
 199   path_parse(file, &f);
 200   f.f_dir.len = 0;
 201   /* For globbing, we unconditionally ignore current and parent
 202    * directory items. Since those items always exist, there's no
 203    * reason why caller of GLOB would want to see them.
 204    * We could also change file_dirscan, but then paths with embedded
 205    * "." and ".." won't work anywhere. */
 206   /* k8: will this break anything? it shouldn't... */
 207   if (!strcmp(f.f_base.ptr, ".") || !strcmp(f.f_base.ptr, "..")) return;
 208   path_build(buf, &f);
 209   /*
 210   fprintf(stderr, "buf: [%s]\n", buf);
 211   int c;
 212   for (c = 0; c < 6; ++c) fprintf(stderr, " %d: [%s]\n", c, f.part[c].ptr);
 213   */
 214   if (globbing->mode != GLOB_ANY) {
 215     int ftype = file_type(file);
 216     switch (globbing->mode) {
 217       case GLOB_DIRS: if (ftype != 1) return; break;
 218       case GLOB_FILES: if (ftype != 0) return; break;
 219       default: ;
 220     }
 221   }
 222   if (globbing->cmptype < 0) {
 223     for (l = globbing->patterns; l; l = l->next) {
 224       if (matchglobex(l->string, buf, globbing->casesens) == 0) {
 225         globbing->results = list_new(globbing->results, (globbing->namesonly ? buf : file), 0);
 226         break;
 227       }
 228     }
 229   } else if (globbing->cmptype > 0) {
 230     for (int f = 0; f < globbing->cmptype; ++f) {
 231       if (regexp_execute(globbing->re[f], buf, NULL, 0) > 0) {
 232         globbing->results = list_new(globbing->results, (globbing->namesonly ? buf : file), 0);
 233         break;
 234       }
 235     }
 236   } else {
 237     for (l = globbing->patterns; l; l = l->next) {
 238       if ((globbing->casesens ? strcmp : strcasecmp)(l->string, buf) == 0) {
 239         globbing->results = list_new(globbing->results, (globbing->namesonly ? buf : file), 0);
 240         break;
 241       }
 242     }
 243   }
 244 }
 245
 246
 247 static LIST *builtin_glob (PARSE *parse, LOL *args, int *jmp) {
 248   LIST *l = lol_get(args, 0);
 249   LIST *r = lol_get(args, 1);
 250   LIST *lo;
 251   struct globbing globbing;
 252   if (!r) return L0;
 253   globbing.results = L0;
 254   globbing.patterns = r;
 255   globbing.casesens = 1;
 256   globbing.cmptype = -1;
 257   globbing.mode = GLOB_ANY;
 258   globbing.namesonly = 0;
 259   for (lo = lol_get(args, 2); lo != NULL; lo = lo->next) {
 260     if (!strcmp("case-sensitive", lo->string)) globbing.casesens = 1;
 261     else if (!strcmp("case-insensitive", lo->string)) globbing.casesens = 0;
 262     else if (!strcmp("ignore-case", lo->string)) globbing.casesens = 0;
 263     else if (!strcmp("glob", lo->string)) globbing.cmptype = -1;
 264     else if (!strcmp("regexp", lo->string)) globbing.cmptype = 1;
 265     else if (!strcmp("plain", lo->string)) globbing.cmptype = 0;
 266     else if (!strcmp("dirs-only", lo->string)) globbing.mode = GLOB_DIRS;
 267     else if (!strcmp("files-only", lo->string)) globbing.mode = GLOB_FILES;
 268     else if (!strcmp("any", lo->string)) globbing.mode = GLOB_ANY;
 269     else if (!strcmp("names-only", lo->string)) globbing.namesonly = 1;
 270     else if (!strcmp("full-path", lo->string)) globbing.namesonly = 0;
 271     else {
 272       printf("jam: invalid option for Glob built-in: '%s'\n", lo->string);
 273       exit(EXITBAD); /* yeech */
 274     }
 275   }
 276   if (globbing.cmptype > 0) {
 277     /* compile regexps */
 278     globbing.cmptype = list_length(r);
 279     globbing.re = malloc(sizeof(globbing.re[0])*globbing.cmptype);
 280     if (globbing.re == NULL) { printf("FATAL: out of memory in Glob\n"); exit(42); }
 281     for (int f = 0; r; r = r->next, ++f) globbing.re[f] = regexp_compile(r->string, (globbing.casesens ? 0 : RE9_FLAG_CASEINSENS));
 282   } else {
 283     globbing.re = NULL;
 284   }
 285   for (; l; l = list_next(l)) file_dirscan(l->string, builtin_glob_back, &globbing);
 286   if (globbing.re != NULL) {
 287     for (int f = 0; f < globbing.cmptype; ++f) regexp_free(globbing.re[f]);
 288     free(globbing.re);
 289   }
 290   return globbing.results;
 291 }
 292
 293
 294 /*
 295  * builtin_match() - MATCH rule, regexp matching
 296  */
 297 static LIST *builtin_match (PARSE *parse, LOL *args, int *jmp) {
 298   LIST *l, *lo;
 299   LIST *res = L0;
 300   int casesens = 1;
 301   int cmptype = 1;
 302   for (lo = lol_get(args, 2); lo != NULL; lo = lo->next) {
 303     if (!strcmp("case-sensitive", lo->string)) casesens = 1;
 304     else if (!strcmp("case-insensitive", lo->string)) casesens = 0;
 305     else if (!strcmp("ignore-case", lo->string)) casesens = 0;
 306     else if (!strcmp("glob", lo->string)) cmptype = -1;
 307     else if (!strcmp("regexp", lo->string)) cmptype = 1;
 308     else if (!strcmp("plain", lo->string)) cmptype = 0;
 309     else {
 310       printf("jam: invalid option for Match built-in: '%s'\n", lo->string);
 311       exit(EXITBAD); /* yeech */
 312     }
 313   }
 314   /* for each pattern */
 315   for (l = lol_get(args, 0); l; l = l->next) {
 316     LIST *r;
 317     if (cmptype > 0) {
 318       regexp_t *re;
 319       re9_sub_t mt[RE9_SUBEXP_MAX];
 320       re = regexp_compile(l->string, (casesens ? 0: RE9_FLAG_CASEINSENS));
 321       /* for each string to match against */
 322       for (r = lol_get(args, 1); r; r = r->next) {
 323         mt[0].sp = mt[0].ep = NULL;
 324         if (regexp_execute(re, r->string, mt, RE9_SUBEXP_MAX) > 0) {
 325           dstring_t buf;
 326           /* add all parameters up to highest onto list */
 327           /* must have parameters to have results! */
 328           //fprintf(stderr, "re: <%s>: nsub=%d\n", re->restr, re9_nsub(re->re));
 329           dstr_init(&buf);
 330           for (int i = 1; i < re9_nsub(re->re); ++i) {
 331             int l = mt[i].ep-mt[i].sp;
 332             dstr_clear(&buf);
 333             if (l > 0) dstr_push_buf(&buf, mt[i].sp, l);
 334             res = list_new(res, dstr_cstr(&buf), 0);
 335           }
 336           /* add full match as last item */
 337           {
 338             int l = mt[0].ep-mt[0].sp;
 339             dstr_clear(&buf);
 340             if (l > 0) dstr_push_buf(&buf, mt[0].sp, l); else dstr_push_cstr(&buf, "1");
 341             res = list_new(res, dstr_cstr(&buf), 0);
 342           }
 343           dstr_done(&buf);
 344         }
 345       }
 346       regexp_free(re);
 347     } else if (cmptype < 0) {
 348       for (r = lol_get(args, 1); r; r = r->next) {
 349         if (matchglobex(l->string, r->string, casesens) == 0) {
 350           res = list_new(res, r->string, 0);
 351         }
 352       }
 353     } else {
 354       for (r = lol_get(args, 1); r; r = r->next) {
 355         if ((casesens ? strcmp : strcasecmp)(l->string, r->string) == 0) {
 356           res = list_new(res, r->string, 0);
 357         }
 358       }
 359     }
 360   }
 361   return res;
 362 }
 363
 364
 365 static LIST *builtin_hdrmacro (PARSE *parse, LOL *args, int *jmp) {
 366   LIST *l = lol_get(args, 0);
 367   for (; l; l = list_next(l)) {
 368     TARGET *t = bindtarget(l->string);
 369     /* scan file for header filename macro definitions */
 370     if (DEBUG_HEADER) printf("scanning '%s' for header file macro definitions\n", l->string);
 371     macro_headers(t);
 372   }
 373   return L0;
 374 }
 375
 376
 377 /* backported from boost-jam */
 378 /*
 379  * Return the current working directory.
 380  *
 381  * Usage: pwd = [ PWD ] ;
 382  */
 383 static LIST *builtin_pwd (PARSE *parse, LOL *args, int *jmp) {
 384   char pwd_buffer[PATH_MAX];
 385   if (!getcwd(pwd_buffer, sizeof(pwd_buffer))) {
 386     perror("can not get current directory");
 387     return L0;
 388   }
 389   return list_new(L0, pwd_buffer, 0);
 390 }
 391
 392
 393 /* backported from boost-jam */
 394 static LIST *builtin_sort (PARSE *parse, LOL *args, int *jmp) {
 395   LIST *arg = lol_get(args, 0);
 396   arg = list_sort(arg);
 397   return arg;
 398 }
 399
 400
 401 /* backported from boost-jam; greatly improved */
 402 /* Command shcmd [[ : options ]] */
 403 static LIST *builtin_command (PARSE *parse, LOL *args, int *jmp) {
 404   LIST *res = L0;
 405   LIST *l;
 406   int ret;
 407   char buffer[1024], buf1[32], *spos, *epos;
 408   FILE *p = NULL;
 409   int exitStatus = -1;
 410   int optExitStatus = 0;
 411   int optNoOutput = 0;
 412   int optTrimLeft = 1;
 413   int optTrimRight = 1;
 414   int optStatus1st = 0;
 415   int optParseOut = 0;
 416   int optSpaceBreak = 1;
 417   int optTabBreak = 1;
 418   int optCRBreak = 1;
 419   int optLFBreak = 1;
 420   int no_options = ((l = lol_get(args, 1)) == NULL);
 421   dstring_t str;
 422   /* for each string in 2nd list: check for arg */
 423   for (; l != NULL; l = l->next) {
 424     if (!strcmp("exit-status", l->string)) optExitStatus = 1;
 425     else if (!strcmp("exit-code", l->string)) optExitStatus = 1;
 426     else if (!strcmp("status-first", l->string)) optStatus1st = 1;
 427     else if (!strcmp("code-first", l->string)) optStatus1st = 1;
 428     else if (!strcmp("no-output", l->string)) optNoOutput = 1;
 429     else if (!strcmp("no-trim", l->string)) optTrimLeft = optTrimRight = 0;
 430     else if (!strcmp("no-trim-left", l->string)) optTrimLeft = 0;
 431     else if (!strcmp("no-trim-right", l->string)) optTrimRight = 0;
 432     else if (!strcmp("parse-output", l->string)) optParseOut = 1;
 433     else if (!strcmp("no-space-break", l->string)) optSpaceBreak = 0;
 434     else if (!strcmp("no-tab-break", l->string)) optTabBreak = 0;
 435     else if (!strcmp("no-nl-break", l->string)) optLFBreak = 0;
 436     else if (!strcmp("no-lf-break", l->string)) optLFBreak = 0;
 437     else if (!strcmp("no-cr-break", l->string)) optCRBreak = 0;
 438     else if (!strcmp("dummy", l->string) || !strcmp("xyzzy", l->string)) {}
 439     else {
 440       printf("jam: invalid option for Command built-in: '%s'\n", l->string);
 441       exit(EXITBAD); /* yeech */
 442     }
 443   }
 444   if (no_options) optNoOutput = 1;
 445   /* build shell command */
 446   dstr_init(&str);
 447   /* for each arg */
 448   for (l = lol_get(args, 0); l; l = l->next) {
 449     if (dstr_len(&str)) dstr_push_char(&str, ' ');
 450     dstr_push_cstr(&str, l->string);
 451   }
 452   /* no shell command? */
 453   if (dstr_len(&str) < 1) { dstr_done(&str); return L0; }
 454   fflush(NULL); /* flush ALL output streams */
 455   p = popen(dstr_cstr(&str), "r");
 456   if (!p) { dstr_done(&str); return L0; }
 457   dstr_clear(&str);
 458   while ((ret = fread(buffer, sizeof(char), sizeof(buffer)-1, p)) > 0) {
 459     if (!optNoOutput) {
 460       buffer[ret] = 0;
 461       dstr_push_cstr(&str, buffer);
 462     }
 463   }
 464   exitStatus = pclose(p);
 465   if (no_options) {
 466     if (exitStatus) {
 467       snprintf(buf1, sizeof(buf1), "%d", exitStatus);
 468       res = list_new(L0, buf1, 0);
 469     } else {
 470       res = L0;
 471     }
 472   } else {
 473     if (optExitStatus && optStatus1st) {
 474       snprintf(buf1, sizeof(buf1), "%d", exitStatus);
 475       res = list_new(res, buf1, 0);
 476     }
 477     /* trim output if necessary */
 478     if (!optNoOutput) {
 479       if (!optParseOut) {
 480         /* don't parse */
 481         if (optTrimRight) {
 482           // trim trailing blanks
 483           int sl = dstr_len(&str);
 484           spos = dstr_cstr(&str);
 485           while (sl > 0 && (unsigned char)spos[sl-1] <= ' ') --sl;
 486           dstr_chop(&str, sl);
 487         }
 488         spos = dstr_cstr(&str);
 489         if (optTrimLeft) {
 490           // trim leading blanks
 491           while (*spos && *((unsigned char *)spos) <= ' ') ++spos;
 492         }
 493         res = list_new(res, spos, 0);
 494       } else {
 495         dstring_t tmp;
 496         /* parse output */
 497         ret = 0; /* was anything added? list must have at least one element */
 498         spos = dstr_cstr(&str);
 499         dstr_init(&tmp);
 500         while (*spos) {
 501           /* skip delimiters */
 502           while (*spos) {
 503             unsigned char ch = (unsigned char)(*spos);
 504             if (ch == ' ') { if (!optSpaceBreak) break; }
 505             else if (ch == '\t') { if (!optTabBreak) break; }
 506             else if (ch == '\r') { if (!optCRBreak) break; }
 507             else if (ch == '\n') { if (!optLFBreak) break; }
 508             else if (ch > ' ') break;
 509             ++spos;
 510           }
 511           if (!*spos) break;
 512           epos = spos+1;
 513           while (*epos) {
 514             int ch = *epos;
 515             if (ch == ' ') { if (optSpaceBreak) break; }
 516             else if (ch == '\t') { if (optTabBreak) break; }
 517             else if (ch == '\r') { if (optCRBreak) break; }
 518             else if (ch == '\n') { if (optLFBreak) break; }
 519             else if ((unsigned char)ch <= ' ') break;
 520             ++epos;
 521           }
 522           dstr_clear(&tmp);
 523           dstr_push_memrange(&tmp, spos, epos);
 524           res = list_new(res, dstr_cstr(&tmp), 0);
 525           ret = 1;
 526           spos = epos;
 527         }
 528         dstr_done(&tmp);
 529         if (!ret) { buf1[0] = '\0'; res = list_new(res, buf1, 0); }
 530       }
 531     }
 532     /* command exit result next */
 533     if (optExitStatus && !optStatus1st) {
 534       snprintf(buf1, sizeof(buf1), "%d", exitStatus);
 535       res = list_new(res, buf1, 0);
 536     }
 537   }
 538   dstr_done(&str);
 539   return res;
 540 }
 541
 542
 543 /* ExprI1 op0 math op1 */
 544 static LIST *builtin_expri1 (PARSE *parse, LOL *args, int *jmp) {
 545   char buffer[100];
 546   int op0, op1, res, comp = 0;
 547   LIST *el = lol_get(args, 0);
 548   if (!el || !el->next) return L0;
 549   if (el->string[0] == '#') {
 550     // string length
 551     snprintf(buffer, sizeof(buffer), "%u", (unsigned int)(strlen(el->next->string)));
 552     return list_new(L0, buffer, 0);
 553   }
 554   if (!el->next->next) return L0;
 555   op0 = atoi(el->string);
 556   op1 = atoi(el->next->next->string);
 557   res = 0;
 558   switch (el->next->string[0]) {
 559     case '+': res = op0+op1; break;
 560     case '-': res = op0-op1; break;
 561     case '*': res = op0*op1; break;
 562     case '/': res = op0/op1; break;
 563     case '%': res = op0%op1; break;
 564     case '<':
 565       comp = 1;
 566       if (el->next->string[1] == '=') res = (op0 <= op1); else res = (op0 < op1);
 567       break;
 568     case '=': comp = 1; res = (op0 == op1); break;
 569     case '!': comp = 1; res = (op0 != op1); break;
 570     case '>':
 571       comp = 1;
 572       if (el->next->string[1] == '=') res = (op0 >= op1); else res = (op0 > op1);
 573       break;
 574     default:
 575       printf("jam: rule ExprI1: unknown operator: '%s'\n", el->next->string);
 576       exit(EXITBAD);
 577   }
 578   if (comp) return (res ? list_new(L0, "tan", 0) : L0);
 579   snprintf(buffer, sizeof(buffer), "%d", res);
 580   return list_new(L0, buffer, 0);
 581 }
 582
 583
 584 /* based on the code from ftjam by David Turner */
 585 static LIST *builtin_split (PARSE *parse, LOL *args, int *jmp) {
 586   LIST *input = lol_get(args, 0);
 587   LIST *tokens = lol_get(args, 1);
 588   LIST *res = L0;
 589   char token[256];
 590   dstring_t str;
 591   int explode = 0;
 592   dstr_init(&str);
 593   /* build token array */
 594   if (tokens == NULL) {
 595     memset(token, 1, sizeof(token));
 596     explode = 1;
 597   } else {
 598     memset(token, 0, sizeof(token));
 599     for (; tokens; tokens = tokens->next) {
 600       const char *s = tokens->string;
 601       for (; *s; ++s) token[(unsigned char)*s] = 1;
 602     }
 603     if (memchr(token, 1, sizeof(token)) == NULL) {
 604       memset(token, 1, sizeof(token));
 605       explode = 1;
 606     }
 607   }
 608   token[0] = 0;
 609   /* now parse the input and split it */
 610   for (; input; input = input->next) {
 611     const char *ptr = input->string;
 612     const char *lastPtr = input->string;
 613     while (*ptr) {
 614       if (token[(unsigned char)*ptr]) {
 615         size_t count = ptr-lastPtr+explode;
 616         if (count > 0) {
 617           dstr_clear(&str);
 618           dstr_push_memrange(&str, lastPtr, ptr+explode);
 619           res = list_new(res, dstr_cstr(&str), 0);
 620         }
 621         lastPtr = ptr+1;
 622       }
 623       ++ptr;
 624     }
 625     if (ptr > lastPtr) res = list_new(res, lastPtr, 0);
 626   }
 627   dstr_done(&str);
 628   return res;
 629 }
 630
 631
 632 /*
 633  * builtin_dependslist()
 634  *
 635  * The DependsList builtin rule returns list of dependencies for
 636  * a given target.
 637  */
 638 static LIST *builtin_dependslist (PARSE *parse, LOL *args, int *jmp) {
 639   LIST *res = L0;
 640   LIST *parents;
 641   for (parents = lol_get(args, 0); parents; parents = parents->next) {
 642     TARGET *t = bindtarget(parents->string);
 643     TARGETS *child;
 644     for (child = t->depends; child; child = child->next) res = list_new(res, child->target->name, 1);
 645   }
 646   return res;
 647 }
 648
 649
 650 /*
 651  * NormalizePath path [: pwd]
 652  *
 653  * it will add 'pwd' if path is not absolute and will try to resolve some '.' and '..' (only leading '..' though).
 654  * it can be used in SubDir replacement to automate dir building
 655  * if there is no $(2), use current directory as 'pwd'
 656  */
 657 static LIST *builtin_normpath (PARSE *parse, LOL *args, int *jmp) {
 658   LIST *el = lol_get(args, 0), *pl = lol_get(args, 1);
 659   char *buf;
 660   int bsz;
 661   if (!el || !el->string) return L0;
 662   bsz = strlen(el->string)*2+1024;
 663   buf = malloc(bsz);
 664   if (buf == NULL) return L0;
 665   if (!normalize_path(el->string, buf, bsz, (pl != NULL ? pl->string : NULL))) { free(buf); return L0; }
 666   el = list_new(NULL, buf, 0);
 667   free(buf);
 668   return el;
 669 }
 670
 671
 672 /*
 673  * ListLength list
 674  */
 675 static LIST *builtin_listlength (PARSE *parse, LOL *args, int *jmp) {
 676   char buffer[100];
 677   LIST *el = lol_get(args, 0);
 678   if (!el) return list_new(L0, "0", 0);
 679   snprintf(buffer, sizeof(buffer), "%d", list_length(el));
 680   return list_new(L0, buffer, 0);
 681 }
 682
 683
 684 /*
 685  * HaveRule and HaveActions
 686  */
 687 typedef struct {
 688   LIST *el;
 689   int wantAction;
 690   int casesens;
 691 } HRNGCI;
 692
 693
 694 typedef struct {
 695   const char *str;
 696   int wantAction;
 697   int casesens;
 698 } HRNormalData;
 699
 700
 701 static int hr_normal (const void *hdata, void *udata) {
 702   const RULE *r = (const RULE *)hdata;
 703   const HRNormalData *d = (const HRNormalData *)udata;
 704   if (strcasecmp(r->name, d->str) == 0) {
 705     if (d->wantAction && r->actions) return 1; // got it
 706     if (!d->wantAction && r->procedure) return 1; // got it
 707   }
 708   return 0;
 709 }
 710
 711
 712 static int hr_glob (const void *hdata, void *udata) {
 713   const RULE *r = (const RULE *)hdata;
 714   const HRNormalData *d = (const HRNormalData *)udata;
 715   if (matchglobex(d->str, r->name, d->casesens) == 0) {
 716     //fprintf(stderr, ":[%s]\n", r->name);
 717     if (d->wantAction && r->actions) return 1; // got it
 718     if (!d->wantAction && r->procedure) return 1; // got it
 719   }
 720   return 0;
 721 }
 722
 723
 724 typedef struct {
 725   regexp_t *re;
 726   int reflags;
 727   int wantAction;
 728 } HRREData;
 729
 730
 731 static int hr_regexp (const void *hdata, void *udata) {
 732   const RULE *r = (const RULE *)hdata;
 733   HRREData *d = (HRREData *)udata;
 734   if (regexp_execute(d->re, r->name, NULL, 0) > 0) {
 735     //fprintf(stderr, ":[%s]\n", r->name);
 736     if (d->wantAction && r->actions) return 1; // got it
 737     if (!d->wantAction && r->procedure) return 1; // got it
 738   }
 739   return 0;
 740 }
 741
 742
 743 static LIST *builtin_haveruleactions (PARSE *parse, LOL *args, int *jmp) {
 744   LIST *el = lol_get(args, 0), *l;
 745   int wantAction = parse->num;
 746   int casesens = 1;
 747   int cmptype = 0; // <0:glob; >0:regexp
 748   if (!el) return L0;
 749   for (l = lol_get(args, 1); l != NULL; l = l->next) {
 750     if (!strcmp("case-sensitive", l->string)) casesens = 1;
 751     else if (!strcmp("case-insensitive", l->string)) casesens = 0;
 752     else if (!strcmp("ignore-case", l->string)) casesens = 0;
 753     else if (!strcmp("glob", l->string)) cmptype = -1;
 754     else if (!strcmp("regexp", l->string)) cmptype = 1;
 755     else if (!strcmp("plain", l->string)) cmptype = 0;
 756     else {
 757       printf("jam: invalid option for Have%s built-in: '%s'\n", (wantAction ? "Actions" : "Rule"), l->string);
 758       exit(EXITBAD); /* yeech */
 759     }
 760   }
 761   if (casesens == 1 && cmptype == 0) {
 762     // standard mode
 763     for (; el; el = el->next) {
 764       RULE *r = findrule(el->string);
 765       if (!r) return L0;
 766       if (wantAction && !r->actions) return L0;
 767       if (!wantAction && !r->procedure) return L0;
 768     }
 769   } else if (cmptype < 0) {
 770     // glob
 771     HRNormalData nfo;
 772     nfo.wantAction = wantAction;
 773     nfo.casesens = casesens;
 774     for (; el; el = el->next) {
 775       nfo.str = el->string;
 776       if (!iteraterules(hr_glob, &nfo)) return L0;
 777     }
 778   } else if (cmptype > 0) {
 779     // regexp
 780     HRREData nfo;
 781     nfo.wantAction = wantAction;
 782     for (; el; el = el->next) {
 783       int err;
 784       nfo.re = regexp_compile(el->string, (casesens ? 0 : RE9_FLAG_CASEINSENS));
 785       /*printf("FATAL: invalid regexp in Have%s: %s\n", (wantAction ? "Actions" : "Rule"), errmsg);*/
 786       err = iteraterules(hr_regexp, &nfo);
 787       regexp_free(nfo.re);
 788       if (!err) return L0;
 789     }
 790   } else {
 791     // normal, case-insensitive
 792     HRNormalData nfo;
 793     nfo.wantAction = wantAction;
 794     for (; el; el = el->next) {
 795       nfo.str = el->string;
 796       if (!iteraterules(hr_normal, &nfo)) return L0;
 797     }
 798   }
 799   return list_new(L0, "1", 0);
 800 }
 801
 802
 803 /* generate random name:
 804  * [ RandName ] -- /tmp/XXX
 805  * [ RandName "abc/" ] -- abc/XXX
 806  * [ RandName "" ] -- XXX
 807  */
 808 static LIST *builtin_randname (PARSE *parse, LOL *args, int *jmp) {
 809   static BJRandCtx rctx;
 810   static int initialized = 0;
 811   static const char alphabet[] = "0123456789abcdefghijklmnopqrstuvwxyz";
 812   LIST *el;
 813   char buffer[9], *s;
 814   const char *path;
 815 #ifdef OS_NT
 816   static char tp[8192]
 817 #endif
 818   if (!initialized) {
 819     initialized = 1;
 820     bjprngInit(&rctx, bjprngGenRandSeed());
 821 #ifdef OS_NT
 822     GetTempPath(sizeof(tp), tp);
 823 #endif
 824   }
 825   for (int f = 0; f < 8; ++f) buffer[f] = alphabet[bjprngRand(&rctx)%strlen(alphabet)];
 826   buffer[8] = 0;
 827   el = lol_get(args, 0);
 828   path = (el != NULL && el->string != NULL ? el->string :
 829 #ifdef OS_NT
 830     tp
 831 #else
 832     "/tmp/"
 833 #endif
 834   );
 835   s = alloca(strlen(path)+strlen(buffer)+2);
 836   sprintf(s, "%s%s", path, buffer);
 837   return list_new(L0, s, 0);
 838 }
 839
 840
 841 /* write list to file:
 842  * ListFileWrite filename : list [: terminator] [: append]
 843  * default terminator is '\n'
 844  * return success flag
 845  */
 846 static LIST *builtin_listwrite (PARSE *parse, LOL *args, int *jmp) {
 847   LIST *el = lol_get(args, 0);
 848   if (el != NULL && el->string != NULL && el->string[0]) {
 849     LIST *l = lol_get(args, 3);
 850     FILE *fo = fopen(el->string, (l != NULL && l->string[0] ? "a" : "w"));
 851     if (fo != NULL) {
 852       const char *term;
 853       l = lol_get(args, 2);
 854       term = (l != NULL ? l->string : "\n");
 855       for (l = lol_get(args, 1); l != NULL; l = l->next) {
 856         if (fprintf(fo, "%s%s", l->string, term) < 0) {
 857           fclose(fo);
 858           unlink(el->string);
 859           return L0;
 860         }
 861       }
 862       fclose(fo);
 863       return list_new(L0, "1", 0);
 864     }
 865   }
 866   return L0;
 867 }
 868
 869
 870 /* remove duplicates from list */
 871 static LIST *builtin_listremdups (PARSE *parse, LOL *args, int *jmp) {
 872   LIST *el = lol_get(args, 0);
 873   if (el != NULL) {
 874     LIST *l, *res = list_new(L0, el->string, 1);
 875     for (l = el->next; l != NULL; l = l->next) {
 876       int found = 0;
 877       for (LIST *t = el; t != l && !found; t = t->next) if (strcmp(t->string, l->string) == 0) found = 1;
 878       if (!found) res = list_new(res, l->string, 1);
 879     }
 880     return res;
 881   }
 882   return el; /* no need to change anything */
 883 }
 884
 885
 886 /*
 887  * compile_builtin() - define builtin rules
 888  */
 889
 890 #define P0  ((PARSE *)0)
 891 #define C0  ((char *)0)
 892
 893
 894 /* ":" -- previous name in upper case; "." -- previous name in lower case */
 895 static inline void bind_builtin (PARSE *pp, const char *name) {
 896   bindrule(name)->procedure = pp;
 897 }
 898
 899
 900 static inline void bind_builtin2 (PARSE *pp, const char *name, const char *name1) {
 901   bindrule(name)->procedure = pp;
 902   bindrule(name1)->procedure = pp;
 903 }
 904
 905
 906 void load_builtins (void) {
 907   bind_builtin(parse_make(builtin_depends, P0, P0, P0, C0, C0, 0),
 908     "Depends");
 909   bind_builtin(parse_make(builtin_depends, P0, P0, P0, C0, C0, 1),
 910     "Includes");
 911   bind_builtin(parse_make(builtin_dependslist, P0, P0, P0, C0, C0, 0),
 912     "DependsList");
 913
 914   bind_builtin(parse_make(builtin_flags, P0, P0, P0, C0, C0, T_FLAG_TOUCHED),
 915     "Always");
 916   bind_builtin(parse_make(builtin_flags, P0, P0, P0, C0, C0, T_FLAG_LEAVES),
 917     "Leaves");
 918   bind_builtin(parse_make(builtin_flags, P0, P0, P0, C0, C0, T_FLAG_NOCARE),
 919     "NoCare");
 920   bind_builtin2(parse_make(builtin_flags, P0, P0, P0, C0, C0, T_FLAG_NOTFILE),
 921     "NotFile", "NoTime");
 922   bind_builtin(parse_make(builtin_flags, P0, P0, P0, C0, C0, T_FLAG_NOUPDATE),
 923     "NoUpdate");
 924   bind_builtin(parse_make(builtin_flags, P0, P0, P0, C0, C0, T_FLAG_TEMP),
 925     "Temporary");
 926   bind_builtin(parse_make(builtin_flags, P0, P0, P0, C0, C0, T_FLAG_FORCECARE),
 927     "ForceCare");
 928   bind_builtin(parse_make(builtin_flags, P0, P0, P0, C0, C0, 666),
 929     "ForceFile");
 930
 931   bind_builtin(parse_make(builtin_echo, P0, P0, P0, C0, C0, 0),
 932     "Echo");
 933
 934   bind_builtin(parse_make(builtin_exit, P0, P0, P0, C0, C0, 0),
 935     "Exit");
 936
 937   bind_builtin(parse_make(builtin_glob, P0, P0, P0, C0, C0, 0),
 938     "Glob");
 939   bind_builtin(parse_make(builtin_match, P0, P0, P0, C0, C0, 0),
 940     "Match");
 941
 942   bind_builtin(parse_make(builtin_hdrmacro, P0, P0, P0, C0, C0, 0),
 943     "HdrMacro");
 944
 945   bind_builtin(parse_make(builtin_pwd, P0, P0, P0, C0, C0, 0),
 946     "Pwd");
 947
 948   bind_builtin(parse_make(builtin_sort, P0, P0, P0, C0, C0, 0),
 949     "Sort");
 950
 951   bind_builtin(parse_make(builtin_command, P0, P0, P0, C0, C0, 0),
 952     "Command");
 953
 954   bind_builtin(parse_make(builtin_expri1, P0, P0, P0, C0, C0, 0),
 955     "ExprI1");
 956
 957   bind_builtin(parse_make(builtin_split, P0, P0, P0, C0, C0, 0),
 958     "Split");
 959
 960   bind_builtin(parse_make(builtin_normpath, P0, P0, P0, C0, C0, 0),
 961     "NormalizePath");
 962
 963   bind_builtin(parse_make(builtin_listlength, P0, P0, P0, C0, C0, 0),
 964     "ListLength");
 965   bind_builtin(parse_make(builtin_listwrite, P0, P0, P0, C0, C0, 0),
 966     "ListWrite");
 967   bind_builtin(parse_make(builtin_listremdups, P0, P0, P0, C0, C0, 0),
 968     "ListRemoveDuplicates");
 969
 970   bind_builtin(parse_make(builtin_haveruleactions, P0, P0, P0, C0, C0, 0),
 971     "HaveRule");
 972   bind_builtin(parse_make(builtin_haveruleactions, P0, P0, P0, C0, C0, 1),
 973     "HaveActions");
 974
 975   bind_builtin(parse_make(builtin_randname, P0, P0, P0, C0, C0, 0),
 976     "RandName");
 977 }