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comparison old-trunk/lwar/list.c @ 339:eb230fa7d28e

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Prepare for migration to hg
author lost
date Fri, 19 Mar 2010 02:54:14 +0000
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338:e7885b3ee266 339:eb230fa7d28e
1 /*
2 list.c
3 Copyright © 2009 William Astle
4
5 This file is part of LWAR.
6
7 LWAR is free software: you can redistribute it and/or modify it under the
8 terms of the GNU General Public License as published by the Free Software
9 Foundation, either version 3 of the License, or (at your option) any later
10 version.
11
12 This program is distributed in the hope that it will be useful, but WITHOUT
13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 more details.
16
17 You should have received a copy of the GNU General Public License along with
18 this program. If not, see <http://www.gnu.org/licenses/>.
19
20
21 Implements the program startup code
22
23 */
24
25 #include <config.h>
26
27 #include <errno.h>
28 #include <stdio.h>
29 #include <stdlib.h>
30 #include <string.h>
31
32 #include "lwar.h"
33
34 void do_list(void)
35 {
36 FILE *f;
37 char buf[8];
38 long l;
39 int c;
40
41 f = fopen(archive_file, "r");
42 if (!f)
43 {
44 perror("Opening archive file");
45 exit(1);
46 }
47
48 fread(buf, 1, 6, f);
49 if (memcmp("LWAR1V", buf, 6))
50 {
51 fprintf(stderr, "%s is not a valid archive file.\n", archive_file);
52 exit(1);
53 }
54
55 for (;;)
56 {
57 c = fgetc(f);
58 if (ferror(f))
59 {
60 perror("Reading archive file");
61 exit(1);
62 }
63 if (c == EOF)
64 return;
65
66
67 // find the end of the file name
68 if (!c)
69 return;
70
71 while (c)
72 {
73 putchar(c);
74 c = fgetc(f);
75 if (c == EOF || ferror(f))
76 {
77 fprintf(stderr, "Bad archive file\n");
78 exit(1);
79 }
80 }
81
82 // get length of archive member
83 l = 0;
84 c = fgetc(f);
85 l = c << 24;
86 c = fgetc(f);
87 l |= c << 16;
88 c = fgetc(f);
89 l |= c << 8;
90 c = fgetc(f);
91 l |= c;
92 printf(": %04lx bytes\n", l);
93 fseek(f, l, SEEK_CUR);
94 }
95 }