]>
Commit | Line | Data |
---|---|---|
1 | #include "cache.h" | |
2 | ||
3 | const char **get_pathspec(const char *prefix, char **pathspec) | |
4 | { | |
5 | char *entry = *pathspec; | |
6 | char **p; | |
7 | int prefixlen; | |
8 | ||
9 | if (!prefix) { | |
10 | char **p; | |
11 | if (!entry) | |
12 | return NULL; | |
13 | p = pathspec; | |
14 | do { | |
15 | if (*entry != '.') | |
16 | continue; | |
17 | /* fixup ? */ | |
18 | } while ((entry = *++p) != NULL); | |
19 | return (const char **) pathspec; | |
20 | } | |
21 | ||
22 | if (!entry) { | |
23 | static const char *spec[2]; | |
24 | spec[0] = prefix; | |
25 | spec[1] = NULL; | |
26 | return spec; | |
27 | } | |
28 | ||
29 | /* Otherwise we have to re-write the entries.. */ | |
30 | prefixlen = strlen(prefix); | |
31 | p = pathspec; | |
32 | do { | |
33 | int speclen, len = prefixlen; | |
34 | char *n; | |
35 | ||
36 | for (;;) { | |
37 | if (!strcmp(entry, ".")) { | |
38 | entry++; | |
39 | break; | |
40 | } | |
41 | if (!strncmp(entry, "./", 2)) { | |
42 | entry += 2; | |
43 | continue; | |
44 | } | |
45 | if (!strncmp(entry, "../", 3)) { | |
46 | do { | |
47 | if (!len) | |
48 | die("'%s' is outside repository", *p); | |
49 | len--; | |
50 | } while (len && prefix[len-1] != '/'); | |
51 | entry += 3; | |
52 | continue; | |
53 | } | |
54 | break; | |
55 | } | |
56 | speclen = strlen(entry); | |
57 | n = xmalloc(speclen + len + 1); | |
58 | ||
59 | memcpy(n, prefix, len); | |
60 | memcpy(n + len, entry, speclen+1); | |
61 | *p = n; | |
62 | } while ((entry = *++p) != NULL); | |
63 | return (const char **) pathspec; | |
64 | } | |
65 | ||
66 | const char *setup_git_directory(void) | |
67 | { | |
68 | static char cwd[PATH_MAX+1]; | |
69 | int len, offset; | |
70 | ||
71 | /* | |
72 | * If GIT_DIR is set explicitly, we're not going | |
73 | * to do any discovery | |
74 | */ | |
75 | if (gitenv(GIT_DIR_ENVIRONMENT)) | |
76 | return NULL; | |
77 | ||
78 | if (!getcwd(cwd, sizeof(cwd)) || cwd[0] != '/') | |
79 | die("Unable to read current working directory"); | |
80 | ||
81 | offset = len = strlen(cwd); | |
82 | for (;;) { | |
83 | /* | |
84 | * We always want to see a .git/refs/ subdirectory | |
85 | */ | |
86 | if (!access(".git/refs/", X_OK)) { | |
87 | /* | |
88 | * Then we need either a GIT_OBJECT_DIRECTORY define | |
89 | * or a .git/objects/ directory | |
90 | */ | |
91 | if (gitenv(DB_ENVIRONMENT) || !access(".git/objects/", X_OK)) | |
92 | break; | |
93 | } | |
94 | chdir(".."); | |
95 | do { | |
96 | if (!offset) | |
97 | die("Not a git repository"); | |
98 | } while (cwd[--offset] != '/'); | |
99 | } | |
100 | ||
101 | if (offset == len) | |
102 | return NULL; | |
103 | ||
104 | /* Make "offset" point to past the '/', and add a '/' at the end */ | |
105 | offset++; | |
106 | cwd[len++] = '/'; | |
107 | cwd[len] = 0; | |
108 | return cwd + offset; | |
109 | } |