Andrew's git / gitweb.git /
b502487e536d76d10370182427fb0f4ab8af8a7b
   1/*
   2 * GIT - The information manager from hell
   3 *
   4 * Copyright (C) Eric Biederman, 2005
   5 */
   6#include "cache.h"
   7#include "exec_cmd.h"
   8
   9static const char var_usage[] = "git var [-l | <variable>]";
  10
  11static const char *editor(int flag)
  12{
  13        const char *pgm = git_editor();
  14
  15        if (!pgm && flag & IDENT_ERROR_ON_NO_NAME)
  16                die("Terminal is dumb, but EDITOR unset");
  17
  18        return pgm;
  19}
  20
  21struct git_var {
  22        const char *name;
  23        const char *(*read)(int);
  24};
  25static struct git_var git_vars[] = {
  26        { "GIT_COMMITTER_IDENT", git_committer_info },
  27        { "GIT_AUTHOR_IDENT",   git_author_info },
  28        { "GIT_EDITOR", editor },
  29        { "", NULL },
  30};
  31
  32static void list_vars(void)
  33{
  34        struct git_var *ptr;
  35        const char *val;
  36
  37        for (ptr = git_vars; ptr->read; ptr++)
  38                if ((val = ptr->read(0)))
  39                        printf("%s=%s\n", ptr->name, val);
  40}
  41
  42static const char *read_var(const char *var)
  43{
  44        struct git_var *ptr;
  45        const char *val;
  46        val = NULL;
  47        for (ptr = git_vars; ptr->read; ptr++) {
  48                if (strcmp(var, ptr->name) == 0) {
  49                        val = ptr->read(IDENT_ERROR_ON_NO_NAME);
  50                        break;
  51                }
  52        }
  53        return val;
  54}
  55
  56static int show_config(const char *var, const char *value, void *cb)
  57{
  58        if (value)
  59                printf("%s=%s\n", var, value);
  60        else
  61                printf("%s\n", var);
  62        return git_default_config(var, value, cb);
  63}
  64
  65int main(int argc, char **argv)
  66{
  67        const char *val;
  68        int nongit;
  69        if (argc != 2) {
  70                usage(var_usage);
  71        }
  72
  73        git_extract_argv0_path(argv[0]);
  74
  75        setup_git_directory_gently(&nongit);
  76        val = NULL;
  77
  78        if (strcmp(argv[1], "-l") == 0) {
  79                git_config(show_config, NULL);
  80                list_vars();
  81                return 0;
  82        }
  83        git_config(git_default_config, NULL);
  84        val = read_var(argv[1]);
  85        if (!val)
  86                usage(var_usage);
  87
  88        printf("%s\n", val);
  89
  90        return 0;
  91}