Merge branch 'jc/maint-add-p-coalesce-fix' into maint
[git/dscho.git] / var.c
blob7362ed87354a4bea98c28f9a8c315b7209c67fa2
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));
29 static const char *read_var(const char *var)
31 struct git_var *ptr;
32 const char *val;
33 val = NULL;
34 for(ptr = git_vars; ptr->read; ptr++) {
35 if (strcmp(var, ptr->name) == 0) {
36 val = ptr->read(IDENT_ERROR_ON_NO_NAME);
37 break;
40 return val;
43 static int show_config(const char *var, const char *value, void *cb)
45 if (value)
46 printf("%s=%s\n", var, value);
47 else
48 printf("%s\n", var);
49 return git_default_config(var, value, cb);
52 int main(int argc, char **argv)
54 const char *val;
55 int nongit;
56 if (argc != 2) {
57 usage(var_usage);
60 git_extract_argv0_path(argv[0]);
62 setup_git_directory_gently(&nongit);
63 val = NULL;
65 if (strcmp(argv[1], "-l") == 0) {
66 git_config(show_config, NULL);
67 list_vars();
68 return 0;
70 git_config(git_default_config, NULL);
71 val = read_var(argv[1]);
72 if (!val)
73 usage(var_usage);
75 printf("%s\n", val);
77 return 0;