Andrew's git - gitweb.git/blob

   1/*
   2 * GIT - The information manager from hell
   3 *
   4 * Copyright (C) Eric Biederman, 2005
   5 */
   6#include "builtin.h"
   7
   8static const char var_usage[] = "git var (-l | <variable>)";
   9
  10static const char *editor(int flag)
  11{
  12        const char *pgm = git_editor();
  13
  14        if (!pgm && flag & IDENT_ERROR_ON_NO_NAME)
  15                die("Terminal is dumb, but EDITOR unset");
  16
  17        return pgm;
  18}
  19
  20static const char *pager(int flag)
  21{
  22        const char *pgm = git_pager(1);
  23
  24        if (!pgm)
  25                pgm = "cat";
  26        return pgm;
  27}
  28
  29struct git_var {
  30        const char *name;
  31        const char *(*read)(int);
  32};
  33static struct git_var git_vars[] = {
  34        { "GIT_COMMITTER_IDENT", git_committer_info },
  35        { "GIT_AUTHOR_IDENT",   git_author_info },
  36        { "GIT_EDITOR", editor },
  37        { "GIT_PAGER", pager },
  38        { "", NULL },
  39};
  40
  41static void list_vars(void)
  42{
  43        struct git_var *ptr;
  44        const char *val;
  45
  46        for (ptr = git_vars; ptr->read; ptr++)
  47                if ((val = ptr->read(0)))
  48                        printf("%s=%s\n", ptr->name, val);
  49}
  50
  51static const char *read_var(const char *var)
  52{
  53        struct git_var *ptr;
  54        const char *val;
  55        val = NULL;
  56        for (ptr = git_vars; ptr->read; ptr++) {
  57                if (strcmp(var, ptr->name) == 0) {
  58                        val = ptr->read(IDENT_ERROR_ON_NO_NAME);
  59                        break;
  60                }
  61        }
  62        return val;
  63}
  64
  65static int show_config(const char *var, const char *value, void *cb)
  66{
  67        if (value)
  68                printf("%s=%s\n", var, value);
  69        else
  70                printf("%s\n", var);
  71        return git_default_config(var, value, cb);
  72}
  73
  74int cmd_var(int argc, const char **argv, const char *prefix)
  75{
  76        const char *val = NULL;
  77        if (argc != 2)
  78                usage(var_usage);
  79
  80        if (strcmp(argv[1], "-l") == 0) {
  81                git_config(show_config, NULL);
  82                list_vars();
  83                return 0;
  84        }
  85        git_config(git_default_config, NULL);
  86        val = read_var(argv[1]);
  87        if (!val)
  88                usage(var_usage);
  89
  90        printf("%s\n", val);
  91
  92        return 0;
  93}