Documentation: rename "hooks.txt" to "githooks.txt" and make it a man page
[git/dscho.git] / var.c
blobc20ac919bdbe73c8cd7657d468d2dfbccf6d3aa2
1 /*
2  * GIT - The information manager from hell
3  *
4  * Copyright (C) Eric Biederman, 2005
5  */
6 #include "cache.h"
8 static const char var_usage[] = "git-var [-l | <variable>]";
10 struct git_var {
11         const char *name;
12         const char *(*read)(int);
14 static struct git_var git_vars[] = {
15         { "GIT_COMMITTER_IDENT", git_committer_info },
16         { "GIT_AUTHOR_IDENT",   git_author_info },
17         { "", NULL },
20 static void list_vars(void)
22         struct git_var *ptr;
23         for(ptr = git_vars; ptr->read; ptr++) {
24                 printf("%s=%s\n", ptr->name, ptr->read(IDENT_WARN_ON_NO_NAME));
25         }
28 static const char *read_var(const char *var)
30         struct git_var *ptr;
31         const char *val;
32         val = NULL;
33         for(ptr = git_vars; ptr->read; ptr++) {
34                 if (strcmp(var, ptr->name) == 0) {
35                         val = ptr->read(IDENT_ERROR_ON_NO_NAME);
36                         break;
37                 }
38         }
39         return val;
42 static int show_config(const char *var, const char *value)
44         if (value)
45                 printf("%s=%s\n", var, value);
46         else
47                 printf("%s\n", var);
48         return git_default_config(var, value);
51 int main(int argc, char **argv)
53         const char *val;
54         int nongit;
55         if (argc != 2) {
56                 usage(var_usage);
57         }
59         setup_git_directory_gently(&nongit);
60         val = NULL;
62         if (strcmp(argv[1], "-l") == 0) {
63                 git_config(show_config);
64                 list_vars();
65                 return 0;
66         }
67         git_config(git_default_config);
68         val = read_var(argv[1]);
69         if (!val)
70                 usage(var_usage);
72         printf("%s\n", val);
74         return 0;