bash: teach 'git reset --patch'
[git/spearce.git] / var.c
blob125c0d1676abae6de29de14061d1a24fd842712d
1 /*
2 * GIT - The information manager from hell
4 * Copyright (C) Eric Biederman, 2005
5 */
6 #include "cache.h"
7 #include "exec_cmd.h"
9 static const char var_usage[] = "git var [-l | <variable>]";
11 struct git_var {
12 const char *name;
13 const char *(*read)(int);
15 static struct git_var git_vars[] = {
16 { "GIT_COMMITTER_IDENT", git_committer_info },
17 { "GIT_AUTHOR_IDENT", git_author_info },
18 { "", NULL },
21 static void list_vars(void)
23 struct git_var *ptr;
24 for (ptr = git_vars; ptr->read; ptr++)
25 printf("%s=%s\n", ptr->name, ptr->read(IDENT_WARN_ON_NO_NAME));
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;
39 return val;
42 static int show_config(const char *var, const char *value, void *cb)
44 if (value)
45 printf("%s=%s\n", var, value);
46 else
47 printf("%s\n", var);
48 return git_default_config(var, value, cb);
51 int main(int argc, char **argv)
53 const char *val;
54 int nongit;
55 if (argc != 2) {
56 usage(var_usage);
59 git_extract_argv0_path(argv[0]);
61 setup_git_directory_gently(&nongit);
62 val = NULL;
64 if (strcmp(argv[1], "-l") == 0) {
65 git_config(show_config, NULL);
66 list_vars();
67 return 0;
69 git_config(git_default_config, NULL);
70 val = read_var(argv[1]);
71 if (!val)
72 usage(var_usage);
74 printf("%s\n", val);
76 return 0;