aboutsummaryrefslogtreecommitdiffstats
path: root/contrib/tools/yasm/libyasm/replace_path.c
blob: b0301ef70519318d893882769fa12cb0efe03243 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
/* 
 * Copyright (c) 1988, 1993, 2019 
 *      The Regents of the University of California.  All rights reserved. 
 * 
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions 
 * are met: 
 * 1. Redistributions of source code must retain the above copyright 
 *    notice, this list of conditions and the following disclaimer. 
 * 2. Redistributions in binary form must reproduce the above copyright 
 *    notice, this list of conditions and the following disclaimer in the 
 *    documentation and/or other materials provided with the distribution. 
 * 3. Neither the name of the University nor the names of its contributors 
 *    may be used to endorse or promote products derived from this software 
 *    without specific prior written permission. 
 * 
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
 * SUCH DAMAGE. 
 */ 
#include "util.h" 
 
char * yasm_replace_path(const char* replace_map[], int size, const char* str, int pref_len) { 
    int i; 
    for (i=0; i<size; i++) { 
        const char* pos = strchr(replace_map[i], '='); 
        if (!pos) { 
            continue; 
        } 
        int repl_size = pos - replace_map[i]; 
        if (pref_len < repl_size) { 
            continue; 
        } 
        if (strncmp(replace_map[i], str, repl_size)) { 
            continue; 
        } 
        int subs_size = strlen(replace_map[i]) - (repl_size + 1); 
        int size = subs_size + pref_len - repl_size + 1; 
        char* out = yasm_xmalloc(size); 
        strncpy(out, pos + 1, subs_size); 
        strncpy(out + subs_size, str + repl_size, pref_len - repl_size); 
        out[size - 1] = '\0'; 
        return out; 
    } 
    return yasm__xstrndup(str, pref_len); 
}