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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1 | pmbaty | 1 | /* |
| 2 | * This file is part of the DXX-Rebirth project <https://www.dxx-rebirth.com/>. |
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| 3 | * It is copyright by its individual contributors, as recorded in the |
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| 4 | * project's Git history. See COPYING.txt at the top level for license |
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| 5 | * terms and a link to the Git history. |
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| 6 | */ |
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| 7 | /* |
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| 8 | * Written 1999 Jan 29 by Josh Cogliati |
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| 9 | * Modified for mvl by Bradley Bell, 2002, 2003 |
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| 10 | * This program is licensed under the terms of the GPL, version 2 or later |
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| 11 | */ |
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| 12 | |||
| 13 | #include <stdio.h> |
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| 14 | #include <stdlib.h> |
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| 15 | #include <string.h> |
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| 16 | #include <sys/types.h> |
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| 17 | #include <sys/stat.h> |
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| 18 | #include <fcntl.h> |
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| 19 | |||
| 20 | #define SWAPINT(x) (((x)<<24) | (((unsigned int)(x)) >> 24) | (((x) &0x0000ff00) << 8) | (((x) & 0x00ff0000) >> 8)) |
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| 21 | |||
| 22 | #define MAX_FILES 256 |
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| 23 | |||
| 24 | int |
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| 25 | main(int argc, char *argv[]) |
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| 26 | { |
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| 27 | FILE *mvlfile, *writefile; |
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| 28 | int i, nfiles, len[MAX_FILES]; |
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| 29 | char filename[MAX_FILES][13]; |
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| 30 | char *buf; |
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| 31 | struct stat statbuf; |
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| 32 | int v = 0; |
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| 33 | int bigendian = 0; |
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| 34 | |||
| 35 | if (argc > 1 && !strcmp(argv[1], "v")) { |
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| 36 | v = 1; |
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| 37 | argc--; |
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| 38 | argv++; |
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| 39 | } |
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| 40 | |||
| 41 | if (argc < 2) { |
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| 42 | printf("Usage: mvlextract [v] mvlfile [filename]\n" |
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| 43 | "extracts all the files in mvlfile into the current directory\n" |
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| 44 | "Options:\n" |
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| 45 | " v View files, don't extract\n"); |
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| 46 | exit(0); |
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| 47 | } |
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| 48 | mvlfile = fopen(argv[1], "rb"); |
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| 49 | stat(argv[1], &statbuf); |
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| 50 | printf("%i\n", (int)statbuf.st_size); |
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| 51 | buf = (char *)malloc(4); |
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| 52 | fread(buf, 4, 1, mvlfile); |
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| 53 | fread(&nfiles, 4, 1, mvlfile); |
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| 54 | printf("%d files\n", nfiles); |
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| 55 | if (nfiles > MAX_FILES) { // must be a bigendian mvl |
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| 56 | fprintf(stderr, "warning: nfiles>%d, trying reverse byte order...", |
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| 57 | MAX_FILES); |
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| 58 | bigendian = 1; |
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| 59 | } |
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| 60 | if (bigendian) |
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| 61 | nfiles = SWAPINT(nfiles); |
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| 62 | printf("Extracting from: %s\n", argv[1]); |
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| 63 | free(buf); |
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| 64 | for (i = 0; i < nfiles; i++) { |
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| 65 | fread(filename[i], 13, 1, mvlfile); |
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| 66 | fread(&len[i], 4, 1, mvlfile); |
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| 67 | if (bigendian) |
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| 68 | len[i] = SWAPINT(len[i]); |
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| 69 | if (argc == 2 || !strcmp(argv[2], filename[i])) |
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| 70 | printf("Filename: %s \tLength: %i\n", filename[i], len[i]); |
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| 71 | } |
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| 72 | |||
| 73 | if (!v) { |
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| 74 | for (i = 0; i < nfiles; i++) { |
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| 75 | if (argc > 2 && strcmp(argv[2], filename[i])) |
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| 76 | fseek(mvlfile, len[i], SEEK_CUR); |
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| 77 | else { |
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| 78 | if (ftell(mvlfile) > statbuf.st_size) { |
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| 79 | printf("Error, end of file\n"); |
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| 80 | exit(1); |
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| 81 | } |
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| 82 | buf = (char *)malloc(len[i]); |
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| 83 | if (buf == NULL) { |
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| 84 | printf("Unable to allocate memory\n"); |
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| 85 | } else { |
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| 86 | fread(buf, len[i], 1, mvlfile); |
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| 87 | writefile = fopen(filename[i], "wb"); |
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| 88 | fwrite(buf, len[i], 1, writefile); |
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| 89 | fclose(writefile); |
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| 90 | free(buf); |
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| 91 | } |
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| 92 | } |
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| 93 | } |
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| 94 | } |
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| 95 | fclose(mvlfile); |
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| 96 | |||
| 97 | return 0; |
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| 98 | } |