Diff: -l<num> to limit rename/copy detection.
[git] / var.c
1 /*
2  * GIT - The information manager from hell
3  *
4  * Copyright (C) Eric Biederman, 2005
5  */
6 #include "cache.h"
7 #include <stdio.h>
8 #include <errno.h>
9 #include <string.h>
10
11 static const char var_usage[] = "git-var [-l | <variable>]";
12
13 struct git_var {
14         const char *name;
15         char *(*read)(void);
16 };
17 static struct git_var git_vars[] = {
18         { "GIT_COMMITTER_IDENT", git_committer_info },
19         { "GIT_AUTHOR_IDENT",   git_author_info },
20         { "", NULL },
21 };
22
23 static void list_vars(void)
24 {
25         struct git_var *ptr;
26         for(ptr = git_vars; ptr->read; ptr++) {
27                 printf("%s=%s\n", ptr->name, ptr->read());
28         }
29 }
30
31 static const char *read_var(const char *var)
32 {
33         struct git_var *ptr;
34         const char *val;
35         val = NULL;
36         for(ptr = git_vars; ptr->read; ptr++) {
37                 if (strcmp(var, ptr->name) == 0) {
38                         val = ptr->read();
39                         break;
40                 }
41         }
42         return val;
43 }
44
45 int main(int argc, char **argv)
46 {
47         const char *val;
48         if (argc != 2) {
49                 usage(var_usage);
50         }
51         setup_ident();
52         val = NULL;
53
54         if (strcmp(argv[1], "-l") == 0) {
55                 list_vars();
56                 return 0;
57         }
58         val = read_var(argv[1]);
59         if (!val)
60                 usage(var_usage);
61         
62         printf("%s\n", val);
63         
64         return 0;
65 }