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/*
* GIT - The information manager from hell
*
* Copyright (C) Eric Biederman, 2005
*/
#include "builtin.h"
#include "attr.h"
#include "config.h"
#include "editor.h"
#include "ident.h"
#include "pager.h"
#include "refs.h"
#include "path.h"
#include "strbuf.h"
static const char var_usage[] = "git var (-l | <variable>)";
static char *committer(int ident_flag)
{
return xstrdup_or_null(git_committer_info(ident_flag));
}
static char *author(int ident_flag)
{
return xstrdup_or_null(git_author_info(ident_flag));
}
static char *editor(int ident_flag UNUSED)
{
return xstrdup_or_null(git_editor());
}
static char *sequence_editor(int ident_flag UNUSED)
{
return xstrdup_or_null(git_sequence_editor());
}
static char *pager(int ident_flag UNUSED)
{
const char *pgm = git_pager(1);
if (!pgm)
pgm = "cat";
return xstrdup(pgm);
}
static char *default_branch(int ident_flag UNUSED)
{
return xstrdup_or_null(git_default_branch_name(1));
}
static char *shell_path(int ident_flag UNUSED)
{
return xstrdup(SHELL_PATH);
}
static char *git_attr_val_system(int ident_flag UNUSED)
{
if (git_attr_system_is_enabled()) {
char *file = xstrdup(git_attr_system_file());
normalize_path_copy(file, file);
return file;
}
return NULL;
}
static char *git_attr_val_global(int ident_flag UNUSED)
{
char *file = xstrdup_or_null(git_attr_global_file());
if (file) {
normalize_path_copy(file, file);
return file;
}
return NULL;
}
static char *git_config_val_system(int ident_flag UNUSED)
{
if (git_config_system()) {
char *file = git_system_config();
normalize_path_copy(file, file);
return file;
}
return NULL;
}
static char *git_config_val_global(int ident_flag UNUSED)
{
struct strbuf buf = STRBUF_INIT;
char *user, *xdg;
size_t unused;
git_global_config(&user, &xdg);
if (xdg && *xdg) {
normalize_path_copy(xdg, xdg);
strbuf_addf(&buf, "%s\n", xdg);
}
if (user && *user) {
normalize_path_copy(user, user);
strbuf_addf(&buf, "%s\n", user);
}
free(xdg);
free(user);
strbuf_trim_trailing_newline(&buf);
if (buf.len == 0) {
strbuf_release(&buf);
return NULL;
}
return strbuf_detach(&buf, &unused);
}
struct git_var {
const char *name;
char *(*read)(int);
int multivalued;
};
static struct git_var git_vars[] = {
{
.name = "GIT_COMMITTER_IDENT",
.read = committer,
},
{
.name = "GIT_AUTHOR_IDENT",
.read = author,
},
{
.name = "GIT_EDITOR",
.read = editor,
},
{
.name = "GIT_SEQUENCE_EDITOR",
.read = sequence_editor,
},
{
.name = "GIT_PAGER",
.read = pager,
},
{
.name = "GIT_DEFAULT_BRANCH",
.read = default_branch,
},
{
.name = "GIT_SHELL_PATH",
.read = shell_path,
},
{
.name = "GIT_ATTR_SYSTEM",
.read = git_attr_val_system,
},
{
.name = "GIT_ATTR_GLOBAL",
.read = git_attr_val_global,
},
{
.name = "GIT_CONFIG_SYSTEM",
.read = git_config_val_system,
},
{
.name = "GIT_CONFIG_GLOBAL",
.read = git_config_val_global,
.multivalued = 1,
},
{
.name = "",
.read = NULL,
},
};
static void list_vars(void)
{
struct git_var *ptr;
char *val;
for (ptr = git_vars; ptr->read; ptr++)
if ((val = ptr->read(0))) {
if (ptr->multivalued && *val) {
struct string_list list = STRING_LIST_INIT_DUP;
int i;
string_list_split(&list, val, '\n', -1);
for (i = 0; i < list.nr; i++)
printf("%s=%s\n", ptr->name, list.items[i].string);
string_list_clear(&list, 0);
} else {
printf("%s=%s\n", ptr->name, val);
}
free(val);
}
}
static const struct git_var *get_git_var(const char *var)
{
struct git_var *ptr;
for (ptr = git_vars; ptr->read; ptr++) {
if (strcmp(var, ptr->name) == 0) {
return ptr;
}
}
return NULL;
}
static int show_config(const char *var, const char *value,
const struct config_context *ctx, void *cb)
{
if (value)
printf("%s=%s\n", var, value);
else
printf("%s\n", var);
return git_default_config(var, value, ctx, cb);
}
int cmd_var(int argc, const char **argv, const char *prefix UNUSED)
{
const struct git_var *git_var;
char *val;
if (argc != 2)
usage(var_usage);
if (strcmp(argv[1], "-l") == 0) {
git_config(show_config, NULL);
list_vars();
return 0;
}
git_config(git_default_config, NULL);
git_var = get_git_var(argv[1]);
if (!git_var)
usage(var_usage);
val = git_var->read(IDENT_STRICT);
if (!val)
return 1;
printf("%s\n", val);
free(val);
return 0;
}
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