crunchgen.c revision 30120
1/* 2 * Copyright (c) 1994 University of Maryland 3 * All Rights Reserved. 4 * 5 * Permission to use, copy, modify, distribute, and sell this software and its 6 * documentation for any purpose is hereby granted without fee, provided that 7 * the above copyright notice appear in all copies and that both that 8 * copyright notice and this permission notice appear in supporting 9 * documentation, and that the name of U.M. not be used in advertising or 10 * publicity pertaining to distribution of the software without specific, 11 * written prior permission. U.M. makes no representations about the 12 * suitability of this software for any purpose. It is provided "as is" 13 * without express or implied warranty. 14 * 15 * U.M. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL U.M. 17 * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 18 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION 19 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 20 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 21 * 22 * Author: James da Silva, Systems Design and Analysis Group 23 * Computer Science Department 24 * University of Maryland at College Park 25 */ 26/* 27 * ======================================================================== 28 * crunchgen.c 29 * 30 * Generates a Makefile and main C file for a crunched executable, 31 * from specs given in a .conf file. 32 */ 33#include <ctype.h> 34#include <err.h> 35#include <stdio.h> 36#include <stdlib.h> 37#include <string.h> 38#include <unistd.h> 39 40#include <sys/types.h> 41#include <sys/stat.h> 42#include <sys/param.h> 43 44#define CRUNCH_VERSION "0.2" 45 46#define MAXLINELEN 16384 47#define MAXFIELDS 2048 48 49 50/* internal representation of conf file: */ 51 52/* simple lists of strings suffice for most parms */ 53 54typedef struct strlst { 55 struct strlst *next; 56 char *str; 57} strlst_t; 58 59/* progs have structure, each field can be set with "special" or calculated */ 60 61typedef struct prog { 62 struct prog *next; 63 char *name, *ident; 64 char *srcdir, *objdir; 65 strlst_t *objs, *objpaths; 66 strlst_t *keeplist; 67 strlst_t *links; 68 int goterror; 69} prog_t; 70 71 72/* global state */ 73 74strlst_t *srcdirs = NULL; 75strlst_t *libs = NULL; 76prog_t *progs = NULL; 77 78char line[MAXLINELEN]; 79 80char confname[MAXPATHLEN], infilename[MAXPATHLEN]; 81char outmkname[MAXPATHLEN], outcfname[MAXPATHLEN], execfname[MAXPATHLEN]; 82char tempfname[MAXPATHLEN], cachename[MAXPATHLEN], curfilename[MAXPATHLEN]; 83int linenum = -1; 84int goterror = 0; 85 86int verbose, readcache; /* options */ 87int reading_cache; 88 89int list_mode; 90 91/* general library routines */ 92 93void status(char *str); 94void out_of_memory(void); 95void add_string(strlst_t **listp, char *str); 96int is_dir(char *pathname); 97int is_nonempty_file(char *pathname); 98 99/* helper routines for main() */ 100 101void usage(void); 102void parse_conf_file(void); 103void gen_outputs(void); 104 105 106int main(int argc, char **argv) 107{ 108 char *p; 109 int optc; 110 111 verbose = 1; 112 readcache = 1; 113 *outmkname = *outcfname = *execfname = '\0'; 114 115 while((optc = getopt(argc, argv, "lm:c:e:fq")) != -1) { 116 switch(optc) { 117 case 'f': readcache = 0; break; 118 case 'q': verbose = 0; break; 119 120 case 'm': strcpy(outmkname, optarg); break; 121 case 'c': strcpy(outcfname, optarg); break; 122 case 'e': strcpy(execfname, optarg); break; 123 case 'l': list_mode++; verbose = 0; break; 124 125 case '?': 126 default: usage(); 127 } 128 } 129 130 argc -= optind; 131 argv += optind; 132 133 if(argc != 1) usage(); 134 135 /* 136 * generate filenames 137 */ 138 139 strcpy(infilename, argv[0]); 140 141 /* confname = `basename infilename .conf` */ 142 143 if((p=strrchr(infilename, '/')) != NULL) strcpy(confname, p+1); 144 else strcpy(confname, infilename); 145 if((p=strrchr(confname, '.')) != NULL && !strcmp(p, ".conf")) *p = '\0'; 146 147 if(!*outmkname) sprintf(outmkname, "%s.mk", confname); 148 if(!*outcfname) sprintf(outcfname, "%s.c", confname); 149 if(!*execfname) sprintf(execfname, "%s", confname); 150 151 sprintf(cachename, "%s.cache", confname); 152 sprintf(tempfname, ".tmp_%sXXXXXX", confname); 153 if(mktemp(tempfname) == NULL) { 154 perror(tempfname); 155 exit(1); 156 } 157 158 parse_conf_file(); 159 if (list_mode) 160 exit(goterror); 161 162 gen_outputs(); 163 164 exit(goterror); 165} 166 167 168void usage(void) 169{ 170 fprintf(stderr, "%s\n%s\n", 171 "usage: crunchgen [-fq] [-m <makefile>] [-c <c file>]", 172 " [-e <exec file>] <conffile>"); 173 exit(1); 174} 175 176 177/* 178 * ======================================================================== 179 * parse_conf_file subsystem 180 * 181 */ 182 183/* helper routines for parse_conf_file */ 184 185void parse_one_file(char *filename); 186void parse_line(char *line, int *fc, char **fv, int nf); 187void add_srcdirs(int argc, char **argv); 188void add_progs(int argc, char **argv); 189void add_link(int argc, char **argv); 190void add_libs(int argc, char **argv); 191void add_special(int argc, char **argv); 192 193prog_t *find_prog(char *str); 194void add_prog(char *progname); 195 196 197void parse_conf_file(void) 198{ 199 if(!is_nonempty_file(infilename)) 200 errx(1, "fatal: input file \"%s\" not found", infilename); 201 parse_one_file(infilename); 202 if(readcache && is_nonempty_file(cachename)) { 203 reading_cache = 1; 204 parse_one_file(cachename); 205 } 206} 207 208 209void parse_one_file(char *filename) 210{ 211 char *fieldv[MAXFIELDS]; 212 int fieldc; 213 void (*f)(int c, char **v); 214 FILE *cf; 215 216 sprintf(line, "reading %s", filename); 217 status(line); 218 strcpy(curfilename, filename); 219 220 if((cf = fopen(curfilename, "r")) == NULL) { 221 warn("%s", curfilename); 222 goterror = 1; 223 return; 224 } 225 226 linenum = 0; 227 while(fgets(line, MAXLINELEN, cf) != NULL) { 228 linenum++; 229 parse_line(line, &fieldc, fieldv, MAXFIELDS); 230 if(fieldc < 1) continue; 231 if(!strcmp(fieldv[0], "srcdirs")) f = add_srcdirs; 232 else if(!strcmp(fieldv[0], "progs")) f = add_progs; 233 else if(!strcmp(fieldv[0], "ln")) f = add_link; 234 else if(!strcmp(fieldv[0], "libs")) f = add_libs; 235 else if(!strcmp(fieldv[0], "special")) f = add_special; 236 else { 237 warnx("%s:%d: skipping unknown command `%s'", 238 curfilename, linenum, fieldv[0]); 239 goterror = 1; 240 continue; 241 } 242 if(fieldc < 2) { 243 warnx("%s:%d: %s command needs at least 1 argument, skipping", 244 curfilename, linenum, fieldv[0]); 245 goterror = 1; 246 continue; 247 } 248 f(fieldc, fieldv); 249 } 250 251 if(ferror(cf)) { 252 warn("%s", curfilename); 253 goterror = 1; 254 } 255 fclose(cf); 256} 257 258 259void parse_line(char *line, int *fc, char **fv, int nf) 260{ 261 char *p; 262 263 p = line; 264 *fc = 0; 265 while(1) { 266 while(isspace(*p)) p++; 267 if(*p == '\0' || *p == '#') break; 268 269 if(*fc < nf) fv[(*fc)++] = p; 270 while(*p && !isspace(*p) && *p != '#') p++; 271 if(*p == '\0' || *p == '#') break; 272 *p++ = '\0'; 273 } 274 if(*p) *p = '\0'; /* needed for '#' case */ 275} 276 277 278void add_srcdirs(int argc, char **argv) 279{ 280 int i; 281 282 for(i=1;i<argc;i++) { 283 if(is_dir(argv[i])) 284 add_string(&srcdirs, argv[i]); 285 else { 286 warnx("%s:%d: `%s' is not a directory, skipping it", 287 curfilename, linenum, argv[i]); 288 goterror = 1; 289 } 290 } 291} 292 293 294void add_progs(int argc, char **argv) 295{ 296 int i; 297 298 for(i=1;i<argc;i++) 299 add_prog(argv[i]); 300} 301 302 303void add_prog(char *progname) 304{ 305 prog_t *p1, *p2; 306 307 /* add to end, but be smart about dups */ 308 309 for(p1 = NULL, p2 = progs; p2 != NULL; p1 = p2, p2 = p2->next) 310 if(!strcmp(p2->name, progname)) return; 311 312 p2 = malloc(sizeof(prog_t)); 313 if(p2) { 314 memset(p2, 0, sizeof(prog_t)); 315 p2->name = strdup(progname); 316 } 317 if(!p2 || !p2->name) 318 out_of_memory(); 319 320 p2->next = NULL; 321 if(p1 == NULL) progs = p2; 322 else p1->next = p2; 323 324 p2->ident = p2->srcdir = p2->objdir = NULL; 325 p2->links = p2->objs = p2->keeplist = NULL; 326 p2->goterror = 0; 327 if (list_mode) 328 printf("%s\n",progname); 329} 330 331 332void add_link(int argc, char **argv) 333{ 334 int i; 335 prog_t *p = find_prog(argv[1]); 336 337 if(p == NULL) { 338 warnx("%s:%d: no prog %s previously declared, skipping link", 339 curfilename, linenum, argv[1]); 340 goterror = 1; 341 return; 342 } 343 for(i=2;i<argc;i++) { 344 if (list_mode) 345 printf("%s\n",argv[i]); 346 add_string(&p->links, argv[i]); 347 } 348} 349 350 351void add_libs(int argc, char **argv) 352{ 353 int i; 354 355 for(i=1;i<argc;i++) 356 add_string(&libs, argv[i]); 357} 358 359 360void add_special(int argc, char **argv) 361{ 362 int i; 363 prog_t *p = find_prog(argv[1]); 364 365 if(p == NULL) { 366 if(reading_cache) return; 367 warnx("%s:%d: no prog %s previously declared, skipping special", 368 curfilename, linenum, argv[1]); 369 goterror = 1; 370 return; 371 } 372 373 if(!strcmp(argv[2], "ident")) { 374 if(argc != 4) goto argcount; 375 if((p->ident = strdup(argv[3])) == NULL) 376 out_of_memory(); 377 } 378 else if(!strcmp(argv[2], "srcdir")) { 379 if(argc != 4) goto argcount; 380 if((p->srcdir = strdup(argv[3])) == NULL) 381 out_of_memory(); 382 } 383 else if(!strcmp(argv[2], "objdir")) { 384 if(argc != 4) goto argcount; 385 if((p->objdir = strdup(argv[3])) == NULL) 386 out_of_memory(); 387 } 388 else if(!strcmp(argv[2], "objs")) { 389 p->objs = NULL; 390 for(i=3;i<argc;i++) 391 add_string(&p->objs, argv[i]); 392 } 393 else if(!strcmp(argv[2], "objpaths")) { 394 p->objpaths = NULL; 395 for(i=3;i<argc;i++) 396 add_string(&p->objpaths, argv[i]); 397 } 398 else if(!strcmp(argv[2], "keep")) { 399 p->keeplist = NULL; 400 for(i=3;i<argc;i++) 401 add_string(&p->keeplist, argv[i]); 402 } 403 else { 404 warnx("%s:%d: bad parameter name `%s', skipping line", 405 curfilename, linenum, argv[2]); 406 goterror = 1; 407 } 408 return; 409 410 411 argcount: 412 warnx("%s:%d: too %s arguments, expected \"special %s %s <string>\"", 413 curfilename, linenum, argc < 4? "few" : "many", argv[1], argv[2]); 414 goterror = 1; 415} 416 417 418prog_t *find_prog(char *str) 419{ 420 prog_t *p; 421 422 for(p = progs; p != NULL; p = p->next) 423 if(!strcmp(p->name, str)) return p; 424 425 return NULL; 426} 427 428 429/* 430 * ======================================================================== 431 * gen_outputs subsystem 432 * 433 */ 434 435/* helper subroutines */ 436 437void remove_error_progs(void); 438void fillin_program(prog_t *p); 439void gen_specials_cache(void); 440void gen_output_makefile(void); 441void gen_output_cfile(void); 442 443void fillin_program_objs(prog_t *p, char *path); 444void top_makefile_rules(FILE *outmk); 445void prog_makefile_rules(FILE *outmk, prog_t *p); 446void output_strlst(FILE *outf, strlst_t *lst); 447char *genident(char *str); 448char *dir_search(char *progname); 449 450 451void gen_outputs(void) 452{ 453 prog_t *p; 454 455 for(p = progs; p != NULL; p = p->next) 456 fillin_program(p); 457 458 remove_error_progs(); 459 gen_specials_cache(); 460 gen_output_cfile(); 461 gen_output_makefile(); 462 status(""); 463 fprintf(stderr, 464 "Run \"make -f %s objs exe\" to build crunched binary.\n", 465 outmkname); 466} 467 468 469void fillin_program(prog_t *p) 470{ 471 char path[MAXPATHLEN]; 472 char *srcparent; 473 strlst_t *s; 474 475 sprintf(line, "filling in parms for %s", p->name); 476 status(line); 477 478 if(!p->ident) 479 p->ident = genident(p->name); 480 if(!p->srcdir) { 481 srcparent = dir_search(p->name); 482 if(srcparent) 483 sprintf(path, "%s/%s", srcparent, p->name); 484 if(is_dir(path)) 485 p->srcdir = strdup(path); 486 } 487 if(!p->objdir && p->srcdir) { 488 FILE *f; 489 490 sprintf(path, "cd %s && echo -n /usr/obj/`pwd`", p->srcdir); 491 p->objdir = p->srcdir; 492 f = popen(path,"r"); 493 if (f) { 494 fgets(path,sizeof path, f); 495 if (!pclose(f)) { 496 if(is_dir(path)) 497 p->objdir = strdup(path); 498 } 499 } 500 501 502 } 503 504 if(p->srcdir) sprintf(path, "%s/Makefile", p->srcdir); 505 if(!p->objs && p->srcdir && is_nonempty_file(path)) 506 fillin_program_objs(p, path); 507 508 if(!p->objpaths && p->objdir && p->objs) 509 for(s = p->objs; s != NULL; s = s->next) { 510 sprintf(line, "%s/%s", p->objdir, s->str); 511 add_string(&p->objpaths, line); 512 } 513 514 if(!p->srcdir && verbose) 515 warnx("%s: %s: warning: could not find source directory", 516 infilename, p->name); 517 if(!p->objs && verbose) 518 warnx("%s: %s: warning: could not find any .o files", 519 infilename, p->name); 520 521 if(!p->objpaths) { 522 warnx("%s: %s: error: no objpaths specified or calculated", 523 infilename, p->name); 524 p->goterror = goterror = 1; 525 } 526} 527 528void fillin_program_objs(prog_t *p, char *path) 529{ 530 char *obj, *cp; 531 int rc; 532 FILE *f; 533 534 /* discover the objs from the srcdir Makefile */ 535 536 if((f = fopen(tempfname, "w")) == NULL) { 537 warn("%s", tempfname); 538 goterror = 1; 539 return; 540 } 541 542 fprintf(f, ".include \"%s\"\n", path); 543 fprintf(f, ".if defined(PROG) && !defined(OBJS)\n"); 544 fprintf(f, "OBJS=${PROG}.o\n"); 545 fprintf(f, ".endif\n"); 546 fprintf(f, "crunchgen_objs:\n\t@echo 'OBJS= '${OBJS}\n"); 547 fclose(f); 548 549 sprintf(line, "make -f %s crunchgen_objs 2>&1", tempfname); 550 if((f = popen(line, "r")) == NULL) { 551 warn("submake pipe"); 552 goterror = 1; 553 return; 554 } 555 556 while(fgets(line, MAXLINELEN, f)) { 557 if(strncmp(line, "OBJS= ", 6)) { 558 warnx("make error: %s", line); 559 goterror = 1; 560 continue; 561 } 562 cp = line + 6; 563 while(isspace(*cp)) cp++; 564 while(*cp) { 565 obj = cp; 566 while(*cp && !isspace(*cp)) cp++; 567 if(*cp) *cp++ = '\0'; 568 add_string(&p->objs, obj); 569 while(isspace(*cp)) cp++; 570 } 571 } 572 if((rc=pclose(f)) != 0) { 573 warnx("make error: make returned %d", rc); 574 goterror = 1; 575 } 576 unlink(tempfname); 577} 578 579void remove_error_progs(void) 580{ 581 prog_t *p1, *p2; 582 583 p1 = NULL; p2 = progs; 584 while(p2 != NULL) { 585 if(!p2->goterror) 586 p1 = p2, p2 = p2->next; 587 else { 588 /* delete it from linked list */ 589 warnx("%s: %s: ignoring program because of errors", 590 infilename, p2->name); 591 if(p1) p1->next = p2->next; 592 else progs = p2->next; 593 p2 = p2->next; 594 } 595 } 596} 597 598void gen_specials_cache(void) 599{ 600 FILE *cachef; 601 prog_t *p; 602 603 sprintf(line, "generating %s", cachename); 604 status(line); 605 606 if((cachef = fopen(cachename, "w")) == NULL) { 607 warn("%s", cachename); 608 goterror = 1; 609 return; 610 } 611 612 fprintf(cachef, "# %s - parm cache generated from %s by crunchgen %s\n\n", 613 cachename, infilename, CRUNCH_VERSION); 614 615 for(p = progs; p != NULL; p = p->next) { 616 fprintf(cachef, "\n"); 617 if(p->srcdir) 618 fprintf(cachef, "special %s srcdir %s\n", p->name, p->srcdir); 619 if(p->objdir) 620 fprintf(cachef, "special %s objdir %s\n", p->name, p->objdir); 621 if(p->objs) { 622 fprintf(cachef, "special %s objs", p->name); 623 output_strlst(cachef, p->objs); 624 } 625 fprintf(cachef, "special %s objpaths", p->name); 626 output_strlst(cachef, p->objpaths); 627 } 628 fclose(cachef); 629} 630 631 632void gen_output_makefile(void) 633{ 634 prog_t *p; 635 FILE *outmk; 636 637 sprintf(line, "generating %s", outmkname); 638 status(line); 639 640 if((outmk = fopen(outmkname, "w")) == NULL) { 641 warn("%s", outmkname); 642 goterror = 1; 643 return; 644 } 645 646 fprintf(outmk, "# %s - generated from %s by crunchgen %s\n\n", 647 outmkname, infilename, CRUNCH_VERSION); 648 649 top_makefile_rules(outmk); 650 651 for(p = progs; p != NULL; p = p->next) 652 prog_makefile_rules(outmk, p); 653 654 fprintf(outmk, "\n# ========\n"); 655 fclose(outmk); 656} 657 658 659void gen_output_cfile(void) 660{ 661 extern char *crunched_skel[]; 662 char **cp; 663 FILE *outcf; 664 prog_t *p; 665 strlst_t *s; 666 667 sprintf(line, "generating %s", outcfname); 668 status(line); 669 670 if((outcf = fopen(outcfname, "w")) == NULL) { 671 warn("%s", outcfname); 672 goterror = 1; 673 return; 674 } 675 676 fprintf(outcf, 677 "/* %s - generated from %s by crunchgen %s */\n", 678 outcfname, infilename, CRUNCH_VERSION); 679 680 fprintf(outcf, "#define EXECNAME \"%s\"\n", execfname); 681 for(cp = crunched_skel; *cp != NULL; cp++) 682 fprintf(outcf, "%s\n", *cp); 683 684 for(p = progs; p != NULL; p = p->next) 685 fprintf(outcf, "extern int _crunched_%s_stub();\n", p->ident); 686 687 fprintf(outcf, "\nstruct stub entry_points[] = {\n"); 688 for(p = progs; p != NULL; p = p->next) { 689 fprintf(outcf, "\t{ \"%s\", _crunched_%s_stub },\n", 690 p->name, p->ident); 691 for(s = p->links; s != NULL; s = s->next) 692 fprintf(outcf, "\t{ \"%s\", _crunched_%s_stub },\n", 693 s->str, p->ident); 694 } 695 696 fprintf(outcf, "\t{ EXECNAME, crunched_main },\n"); 697 fprintf(outcf, "\t{ NULL, NULL }\n};\n"); 698 fclose(outcf); 699} 700 701 702char *genident(char *str) 703{ 704 char *n,*s,*d; 705 706 /* 707 * generates a Makefile/C identifier from a program name, mapping '-' to 708 * '_' and ignoring all other non-identifier characters. This leads to 709 * programs named "foo.bar" and "foobar" to map to the same identifier. 710 */ 711 712 if((n = strdup(str)) == NULL) 713 return NULL; 714 for(d = s = n; *s != '\0'; s++) { 715 if(*s == '-') *d++ = '_'; 716 else if(*s == '_' || isalnum(*s)) *d++ = *s; 717 } 718 *d = '\0'; 719 return n; 720} 721 722 723char *dir_search(char *progname) 724{ 725 char path[MAXPATHLEN]; 726 strlst_t *dir; 727 728 for(dir=srcdirs; dir != NULL; dir=dir->next) { 729 sprintf(path, "%s/%s", dir->str, progname); 730 if(is_dir(path)) return dir->str; 731 } 732 return NULL; 733} 734 735 736void top_makefile_rules(FILE *outmk) 737{ 738 prog_t *p; 739 740 fprintf(outmk, "LIBS="); 741 output_strlst(outmk, libs); 742 743 fprintf(outmk, "CRUNCHED_OBJS="); 744 for(p = progs; p != NULL; p = p->next) 745 fprintf(outmk, " %s.lo", p->name); 746 fprintf(outmk, "\n"); 747 748 fprintf(outmk, "SUBMAKE_TARGETS="); 749 for(p = progs; p != NULL; p = p->next) 750 fprintf(outmk, " %s_make", p->ident); 751 fprintf(outmk, "\n\n"); 752 753 fprintf(outmk, "%s: %s.o $(CRUNCHED_OBJS)\n", 754 execfname, execfname); 755 fprintf(outmk, "\t$(CC) -static -o %s %s.o $(CRUNCHED_OBJS) $(LIBS)\n", 756 execfname, execfname); 757 fprintf(outmk, "\tstrip %s\n", execfname); 758 fprintf(outmk, "all: objs exe\nobjs: $(SUBMAKE_TARGETS)\n"); 759 fprintf(outmk, "exe: %s\n", execfname); 760 fprintf(outmk, "clean:\n\trm -f %s *.lo *.o *_stub.c\n", 761 execfname); 762} 763 764 765void prog_makefile_rules(FILE *outmk, prog_t *p) 766{ 767 strlst_t *lst; 768 769 fprintf(outmk, "\n# -------- %s\n\n", p->name); 770 771 if(p->srcdir && p->objs) { 772 fprintf(outmk, "%s_SRCDIR=%s\n", p->ident, p->srcdir); 773 fprintf(outmk, "%s_OBJS=", p->ident); 774 output_strlst(outmk, p->objs); 775 fprintf(outmk, "%s_make:\n", p->ident); 776 fprintf(outmk, "\t(cd $(%s_SRCDIR) && make depend && make $(%s_OBJS))\n\n", 777 p->ident, p->ident); 778 } 779 else 780 fprintf(outmk, "%s_make:\n\t@echo \"** cannot make objs for %s\"\n\n", 781 p->ident, p->name); 782 783 fprintf(outmk, "%s_OBJPATHS=", p->ident); 784 output_strlst(outmk, p->objpaths); 785 786 fprintf(outmk, "%s_stub.c:\n", p->name); 787 fprintf(outmk, "\techo \"" 788 "int _crunched_%s_stub(int argc, char **argv, char **envp)" 789 "{return main(argc,argv,envp);}\" >%s_stub.c\n", 790 p->ident, p->name); 791 fprintf(outmk, "%s.lo: %s_stub.o $(%s_OBJPATHS)\n", 792 p->name, p->name, p->ident); 793 fprintf(outmk, "\tld -dc -r -o %s.lo %s_stub.o $(%s_OBJPATHS)\n", 794 p->name, p->name, p->ident); 795 fprintf(outmk, "\tcrunchide -k __crunched_%s_stub ", p->ident); 796 for(lst = p->keeplist; lst != NULL; lst = lst->next) 797 fprintf(outmk, "-k _%s ", lst->str); 798 fprintf(outmk, "%s.lo\n", p->name); 799} 800 801void output_strlst(FILE *outf, strlst_t *lst) 802{ 803 for(; lst != NULL; lst = lst->next) 804 fprintf(outf, " %s", lst->str); 805 fprintf(outf, "\n"); 806} 807 808 809/* 810 * ======================================================================== 811 * general library routines 812 * 813 */ 814 815void status(char *str) 816{ 817 static int lastlen = 0; 818 int len, spaces; 819 820 if(!verbose) return; 821 822 len = strlen(str); 823 spaces = lastlen - len; 824 if(spaces < 1) spaces = 1; 825 826 fprintf(stderr, " [%s]%*.*s\r", str, spaces, spaces, " "); 827 fflush(stderr); 828 lastlen = len; 829} 830 831 832void out_of_memory(void) 833{ 834 errx(1, "%s: %d: out of memory, stopping", infilename, linenum); 835} 836 837 838void add_string(strlst_t **listp, char *str) 839{ 840 strlst_t *p1, *p2; 841 842 /* add to end, but be smart about dups */ 843 844 for(p1 = NULL, p2 = *listp; p2 != NULL; p1 = p2, p2 = p2->next) 845 if(!strcmp(p2->str, str)) return; 846 847 p2 = malloc(sizeof(strlst_t)); 848 if(p2) { 849 memset(p2, 0, sizeof(strlst_t)); 850 p2->str = strdup(str); 851 } 852 if(!p2 || !p2->str) 853 out_of_memory(); 854 855 p2->next = NULL; 856 if(p1 == NULL) *listp = p2; 857 else p1->next = p2; 858} 859 860 861int is_dir(char *pathname) 862{ 863 struct stat buf; 864 865 if(stat(pathname, &buf) == -1) 866 return 0; 867 return S_ISDIR(buf.st_mode); 868} 869 870int is_nonempty_file(char *pathname) 871{ 872 struct stat buf; 873 874 if(stat(pathname, &buf) == -1) 875 return 0; 876 877 return S_ISREG(buf.st_mode) && buf.st_size > 0; 878} 879