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23c9e63c DD |
1 | /* |
2 | * Copyright (c) 2000, Red Hat, Inc. | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * A copy of the GNU General Public License can be found at | |
10 | * http://www.gnu.org/ | |
11 | * | |
12 | * Written by DJ Delorie <dj@cygnus.com> | |
13 | * | |
14 | */ | |
15 | ||
16 | /* See concat.h. Note that we canonicalize the result, this avoids | |
17 | multiple slashes being interpreted as UNCs. */ | |
18 | ||
8507f105 DD |
19 | static char *cvsid = "\n%%% $Id$\n"; |
20 | ||
23c9e63c DD |
21 | #include <stdarg.h> |
22 | #include <stdlib.h> | |
23 | #include <string.h> | |
24 | ||
25 | char * | |
26 | concat (char *s, ...) | |
27 | { | |
ed3e8b9b | 28 | int len; |
23c9e63c DD |
29 | char *rv, *arg; |
30 | va_list v; | |
31 | ||
32 | if (!s) | |
33 | return 0; | |
34 | ||
ed3e8b9b DD |
35 | len = strlen (s); |
36 | ||
23c9e63c DD |
37 | va_start (v, s); |
38 | while (1) | |
39 | { | |
1fd6d0a2 | 40 | arg = va_arg (v, char *); |
23c9e63c DD |
41 | if (arg == 0) |
42 | break; | |
1fd6d0a2 | 43 | len += strlen (arg); |
23c9e63c | 44 | } |
1fd6d0a2 | 45 | va_end (v); |
23c9e63c DD |
46 | |
47 | rv = (char *) malloc (len+1); | |
1fd6d0a2 DD |
48 | strcpy (rv, s); |
49 | va_start (v, s); | |
23c9e63c DD |
50 | while (1) |
51 | { | |
1fd6d0a2 | 52 | arg = va_arg (v, char *); |
23c9e63c DD |
53 | if (arg == 0) |
54 | break; | |
1fd6d0a2 | 55 | strcat (rv, arg); |
23c9e63c | 56 | } |
1fd6d0a2 | 57 | va_end (v); |
23c9e63c DD |
58 | |
59 | /* concat is only used for urls and files, so we can safely | |
60 | canonicalize the results */ | |
61 | char *d; | |
62 | for (s=rv; *s; s++) | |
63 | if (*s == '\\') | |
64 | *s = '/'; | |
65 | for (s=d=rv; *s; s++) | |
66 | { | |
67 | *d++ = *s; | |
68 | /* special case for URLs */ | |
f5d0464b | 69 | if (*s == ':' && s[1] == '/' && s[2] == '/' && s > rv+1) |
23c9e63c DD |
70 | { |
71 | *d++ = *++s; | |
72 | *d++ = *++s; | |
73 | } | |
74 | else if (*s == '/') | |
75 | while (s[1] == '/') | |
76 | s++; | |
77 | } | |
78 | *d = 0; | |
79 | ||
80 | return rv; | |
81 | } | |
f57c332f DD |
82 | |
83 | char * | |
84 | backslash (char *s) | |
85 | { | |
86 | for (char *t = s; *t; t++) | |
87 | if (*t == '/') | |
88 | *t = '\\'; | |
89 | return s; | |
90 | } |