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Commit | Line | Data |
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6fb737be JH |
1 | #include "cache.h" |
2 | #include "quote.h" | |
3 | ||
4 | /* Help to copy the thing properly quoted for the shell safety. | |
5 | * any single quote is replaced with '\'', and the caller is | |
6 | * expected to enclose the result within a single quote pair. | |
7 | * | |
8 | * E.g. | |
9 | * original sq_quote result | |
10 | * name ==> name ==> 'name' | |
11 | * a b ==> a b ==> 'a b' | |
12 | * a'b ==> a'\''b ==> 'a'\''b' | |
13 | */ | |
14 | char *sq_quote(const char *src) | |
15 | { | |
16 | static char *buf = NULL; | |
17 | int cnt, c; | |
18 | const char *cp; | |
19 | char *bp; | |
20 | ||
21 | /* count bytes needed to store the quoted string. */ | |
22 | for (cnt = 3, cp = src; *cp; cnt++, cp++) | |
23 | if (*cp == '\'') | |
24 | cnt += 3; | |
25 | ||
26 | buf = xmalloc(cnt); | |
27 | bp = buf; | |
28 | *bp++ = '\''; | |
29 | while ((c = *src++)) { | |
30 | if (c != '\'') | |
31 | *bp++ = c; | |
32 | else { | |
33 | bp = strcpy(bp, "'\\''"); | |
34 | bp += 4; | |
35 | } | |
36 | } | |
37 | *bp++ = '\''; | |
38 | *bp = 0; | |
39 | return buf; | |
40 | } | |
41 |