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Commit | Line | Data |
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77cb17e9 MO |
1 | #include "cache.h" |
2 | #include "exec_cmd.h" | |
575ba9d6 | 3 | #include "quote.h" |
77cb17e9 MO |
4 | #define MAX_ARGS 32 |
5 | ||
6 | extern char **environ; | |
384df833 | 7 | static const char *argv_exec_path; |
77cb17e9 | 8 | |
4ec22a48 JS |
9 | static const char *builtin_exec_path(void) |
10 | { | |
6fad004a | 11 | #ifndef __MINGW32__ |
4ec22a48 | 12 | return GIT_EXEC_PATH; |
6fad004a JS |
13 | #else |
14 | int len; | |
15 | char *p, *q, *sl; | |
16 | static char *ep; | |
17 | if (ep) | |
18 | return ep; | |
19 | ||
20 | len = strlen(_pgmptr); | |
21 | if (len < 2) | |
22 | return ep = "."; | |
23 | ||
24 | p = ep = xmalloc(len+1); | |
25 | q = _pgmptr; | |
26 | sl = NULL; | |
27 | /* copy program name, turn '\\' into '/', skip last part */ | |
28 | while ((*p = *q)) { | |
29 | if (*q == '\\' || *q == '/') { | |
30 | *p = '/'; | |
31 | sl = p; | |
32 | } | |
33 | p++, q++; | |
34 | } | |
35 | if (sl) | |
36 | *sl = '\0'; | |
37 | else | |
38 | ep[0] = '.', ep[1] = '\0'; | |
39 | return ep; | |
40 | #endif | |
4ec22a48 JS |
41 | } |
42 | ||
384df833 | 43 | void git_set_argv_exec_path(const char *exec_path) |
77cb17e9 | 44 | { |
384df833 | 45 | argv_exec_path = exec_path; |
77cb17e9 MO |
46 | } |
47 | ||
48 | ||
49 | /* Returns the highest-priority, location to look for git programs. */ | |
962554c6 | 50 | const char *git_exec_path(void) |
77cb17e9 MO |
51 | { |
52 | const char *env; | |
53 | ||
384df833 SP |
54 | if (argv_exec_path) |
55 | return argv_exec_path; | |
77cb17e9 | 56 | |
d4ebc36c | 57 | env = getenv(EXEC_PATH_ENVIRONMENT); |
2b601626 | 58 | if (env && *env) { |
77cb17e9 MO |
59 | return env; |
60 | } | |
61 | ||
4ec22a48 | 62 | return builtin_exec_path(); |
77cb17e9 MO |
63 | } |
64 | ||
511707d4 SP |
65 | static void add_path(struct strbuf *out, const char *path) |
66 | { | |
67 | if (path && *path) { | |
68 | if (is_absolute_path(path)) | |
69 | strbuf_addstr(out, path); | |
70 | else | |
71 | strbuf_addstr(out, make_absolute_path(path)); | |
72 | ||
80ba074f | 73 | strbuf_addch(out, PATH_SEP); |
511707d4 SP |
74 | } |
75 | } | |
76 | ||
77 | void setup_path(const char *cmd_path) | |
78 | { | |
79 | const char *old_path = getenv("PATH"); | |
80 | struct strbuf new_path; | |
81 | ||
82 | strbuf_init(&new_path, 0); | |
83 | ||
84 | add_path(&new_path, argv_exec_path); | |
85 | add_path(&new_path, getenv(EXEC_PATH_ENVIRONMENT)); | |
4ec22a48 | 86 | add_path(&new_path, builtin_exec_path()); |
511707d4 SP |
87 | add_path(&new_path, cmd_path); |
88 | ||
89 | if (old_path) | |
90 | strbuf_addstr(&new_path, old_path); | |
91 | else | |
92 | strbuf_addstr(&new_path, "/usr/local/bin:/usr/bin:/bin"); | |
93 | ||
94 | setenv("PATH", new_path.buf, 1); | |
95 | ||
96 | strbuf_release(&new_path); | |
97 | } | |
77cb17e9 | 98 | |
9201c707 | 99 | int execv_git_cmd(const char **argv) |
77cb17e9 | 100 | { |
7550be0a JH |
101 | int argc; |
102 | const char **nargv; | |
77cb17e9 | 103 | |
7550be0a JH |
104 | for (argc = 0; argv[argc]; argc++) |
105 | ; /* just counting */ | |
106 | nargv = xmalloc(sizeof(*nargv) * (argc + 2)); | |
77cb17e9 | 107 | |
7550be0a JH |
108 | nargv[0] = "git"; |
109 | for (argc = 0; argv[argc]; argc++) | |
110 | nargv[argc + 1] = argv[argc]; | |
111 | nargv[argc + 1] = NULL; | |
112 | trace_argv_printf(nargv, "trace: exec:"); | |
575ba9d6 | 113 | |
511707d4 | 114 | /* execvp() can only ever return if it fails */ |
7550be0a | 115 | execvp("git", (char **)nargv); |
77cb17e9 | 116 | |
511707d4 | 117 | trace_printf("trace: exec failed: %s\n", strerror(errno)); |
575ba9d6 | 118 | |
7550be0a | 119 | free(nargv); |
511707d4 | 120 | return -1; |
77cb17e9 MO |
121 | } |
122 | ||
123 | ||
9201c707 | 124 | int execl_git_cmd(const char *cmd,...) |
77cb17e9 MO |
125 | { |
126 | int argc; | |
9201c707 JH |
127 | const char *argv[MAX_ARGS + 1]; |
128 | const char *arg; | |
77cb17e9 MO |
129 | va_list param; |
130 | ||
131 | va_start(param, cmd); | |
132 | argv[0] = cmd; | |
133 | argc = 1; | |
134 | while (argc < MAX_ARGS) { | |
135 | arg = argv[argc++] = va_arg(param, char *); | |
136 | if (!arg) | |
137 | break; | |
138 | } | |
139 | va_end(param); | |
140 | if (MAX_ARGS <= argc) | |
141 | return error("too many args to run %s", cmd); | |
142 | ||
143 | argv[argc] = NULL; | |
144 | return execv_git_cmd(argv); | |
145 | } |