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view lwar/replace.c @ 257:e27279180a73 2.x
Added support for include path to LWASM
author | lost |
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date | Tue, 22 Dec 2009 04:53:20 +0000 |
parents | bae1e3ecdce1 |
children |
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/* replace.c Copyright © 2009 William Astle This file is part of LWAR. LWAR is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include <config.h> #include <errno.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include "lwar.h" void do_replace(void) { FILE *f; FILE *nf; unsigned char buf[8]; long l; int c; FILE *f2; int i; char fnbuf[1024]; char fnbuf2[1024]; sprintf(fnbuf, "%s.tmp", archive_file); f = fopen(archive_file, "r+"); if (!f) { if (errno == ENOENT) { nf = fopen(fnbuf, "w"); if (nf) { fputs("LWAR1V", nf); goto doadd; } } perror("Cannot open archive file"); } fread(buf, 1, 6, f); if (memcmp("LWAR1V", buf, 6)) { fprintf(stderr, "%s is not a valid archive file.\n", archive_file); exit(1); } nf = fopen(fnbuf, "w"); if (!nf) { perror("Cannot create temp archive file"); exit(1); } fputs("LWAR1V", nf); for (;;) { c = fgetc(f); if (c == EOF && ferror(f)) { perror("Reading archive file"); exit(1); } if (c == EOF) goto doadd; if (!c) { goto doadd; } // find the end of the file name i = 0; while (c) { fnbuf2[i++] = c; c = fgetc(f); if (c == EOF || ferror(f)) { fprintf(stderr, "Bad archive file\n"); exit(1); } } fnbuf2[i] = 0; // get length of archive member l = 0; c = fgetc(f); l = c << 24; c = fgetc(f); l |= c << 16; c = fgetc(f); l |= c << 8; c = fgetc(f); l |= c; // is it a file we are replacing? if so, do not copy it for (i = 0; i < nfiles; i++) { if (!strcmp(files[i], fnbuf2)) break; } if (i < nfiles) { fseek(f, l, SEEK_CUR); } else { // otherwise, copy it fprintf(nf, "%s", fnbuf2); fputc(0, nf); fputc(l >> 24, nf); fputc((l >> 16) & 0xff, nf); fputc((l >> 8) & 0xff, nf); fputc(l & 0xff, nf); while (l) { c = fgetc(f); fputc(c, nf); l--; } } } // done with the original file fclose(f); doadd: for (i = 0; i < nfiles; i++) { f2 = fopen(files[i], "r"); if (!f2) { fprintf(stderr, "Cannot open file %s:", files[i]); perror(""); exit(1); } fread(buf, 1, 6, f2); if (mergeflag && !memcmp("LWAR1V", buf, 6)) { // add archive contents... for (;;) { c = fgetc(f2); if (c == EOF || ferror(f2)) { perror("Reading input archive file"); exit(1); } if (c == EOF) break; if (!c) { break; } // find the end of the file name while (c) { fputc(c, nf); c = fgetc(f2); if (c == EOF || ferror(f)) { fprintf(stderr, "Bad input archive file\n"); exit(1); } } fputc(0, nf); // get length of archive member l = 0; c = fgetc(f2); fputc(c, nf); l = c << 24; c = fgetc(f2); fputc(c, nf); l |= c << 16; c = fgetc(f2); fputc(c, nf); l |= c << 8; c = fgetc(f2); fputc(c, nf); l |= c; while (l) { c = fgetc(f2); fputc(c, nf); l--; } } fclose(f2); continue; } fseek(f2, 0, SEEK_END); l = ftell(f2); fseek(f2, 0, SEEK_SET); fputs(files[i], nf); fputc(0, nf); fputc(l >> 24, nf); fputc((l >> 16) & 0xff, nf); fputc((l >> 8) & 0xff, nf); fputc(l & 0xff, nf); while (l) { c = fgetc(f2); fputc(c, nf); l--; } } // flag end of file fputc(0, nf); fclose(nf); if (rename(fnbuf, archive_file) < 0) { perror("Cannot replace old archive file"); unlink(fnbuf); } }