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git/builtin/config.c

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#include "builtin.h"
#include "cache.h"
#include "color.h"
#include "parse-options.h"
#include "urlmatch.h"
#include "quote.h"
static const char *const builtin_config_usage[] = {
N_("git config [<options>]"),
NULL
};
static char *key;
static regex_t *key_regexp;
static regex_t *regexp;
static int show_keys;
static int omit_values;
static int use_key_regexp;
static int do_all;
static int do_not_match;
static char delim = '=';
static char key_delim = ' ';
static char term = '\n';
static int use_global_config, use_system_config, use_local_config;
static struct git_config_source given_config_source;
static int actions, types;
static const char *get_color_slot, *get_colorbool_slot;
static int end_null;
static int respect_includes = -1;
static int show_origin;
#define ACTION_GET (1<<0)
#define ACTION_GET_ALL (1<<1)
#define ACTION_GET_REGEXP (1<<2)
#define ACTION_REPLACE_ALL (1<<3)
#define ACTION_ADD (1<<4)
#define ACTION_UNSET (1<<5)
#define ACTION_UNSET_ALL (1<<6)
#define ACTION_RENAME_SECTION (1<<7)
#define ACTION_REMOVE_SECTION (1<<8)
#define ACTION_LIST (1<<9)
#define ACTION_EDIT (1<<10)
#define ACTION_SET (1<<11)
#define ACTION_SET_ALL (1<<12)
#define ACTION_GET_COLOR (1<<13)
#define ACTION_GET_COLORBOOL (1<<14)
#define ACTION_GET_URLMATCH (1<<15)
#define TYPE_BOOL (1<<0)
#define TYPE_INT (1<<1)
#define TYPE_BOOL_OR_INT (1<<2)
#define TYPE_PATH (1<<3)
static struct option builtin_config_options[] = {
OPT_GROUP(N_("Config file location")),
OPT_BOOL(0, "global", &use_global_config, N_("use global config file")),
OPT_BOOL(0, "system", &use_system_config, N_("use system config file")),
OPT_BOOL(0, "local", &use_local_config, N_("use repository config file")),
OPT_STRING('f', "file", &given_config_source.file, N_("file"), N_("use given config file")),
OPT_STRING(0, "blob", &given_config_source.blob, N_("blob-id"), N_("read config from given blob object")),
OPT_GROUP(N_("Action")),
OPT_BIT(0, "get", &actions, N_("get value: name [value-regex]"), ACTION_GET),
OPT_BIT(0, "get-all", &actions, N_("get all values: key [value-regex]"), ACTION_GET_ALL),
OPT_BIT(0, "get-regexp", &actions, N_("get values for regexp: name-regex [value-regex]"), ACTION_GET_REGEXP),
OPT_BIT(0, "get-urlmatch", &actions, N_("get value specific for the URL: section[.var] URL"), ACTION_GET_URLMATCH),
OPT_BIT(0, "replace-all", &actions, N_("replace all matching variables: name value [value_regex]"), ACTION_REPLACE_ALL),
OPT_BIT(0, "add", &actions, N_("add a new variable: name value"), ACTION_ADD),
OPT_BIT(0, "unset", &actions, N_("remove a variable: name [value-regex]"), ACTION_UNSET),
OPT_BIT(0, "unset-all", &actions, N_("remove all matches: name [value-regex]"), ACTION_UNSET_ALL),
OPT_BIT(0, "rename-section", &actions, N_("rename section: old-name new-name"), ACTION_RENAME_SECTION),
OPT_BIT(0, "remove-section", &actions, N_("remove a section: name"), ACTION_REMOVE_SECTION),
OPT_BIT('l', "list", &actions, N_("list all"), ACTION_LIST),
OPT_BIT('e', "edit", &actions, N_("open an editor"), ACTION_EDIT),
OPT_BIT(0, "get-color", &actions, N_("find the color configured: slot [default]"), ACTION_GET_COLOR),
OPT_BIT(0, "get-colorbool", &actions, N_("find the color setting: slot [stdout-is-tty]"), ACTION_GET_COLORBOOL),
OPT_GROUP(N_("Type")),
OPT_BIT(0, "bool", &types, N_("value is \"true\" or \"false\""), TYPE_BOOL),
OPT_BIT(0, "int", &types, N_("value is decimal number"), TYPE_INT),
OPT_BIT(0, "bool-or-int", &types, N_("value is --bool or --int"), TYPE_BOOL_OR_INT),
OPT_BIT(0, "path", &types, N_("value is a path (file or directory name)"), TYPE_PATH),
OPT_GROUP(N_("Other")),
OPT_BOOL('z', "null", &end_null, N_("terminate values with NUL byte")),
OPT_BOOL(0, "name-only", &omit_values, N_("show variable names only")),
OPT_BOOL(0, "includes", &respect_includes, N_("respect include directives on lookup")),
OPT_BOOL(0, "show-origin", &show_origin, N_("show origin of config (file, standard input, blob, command line)")),
OPT_END(),
};
static void check_argc(int argc, int min, int max) {
if (argc >= min && argc <= max)
return;
error("wrong number of arguments");
usage_with_options(builtin_config_usage, builtin_config_options);
}
static void show_config_origin(struct strbuf *buf)
{
const char term = end_null ? '\0' : '\t';
strbuf_addstr(buf, current_config_origin_type());
strbuf_addch(buf, ':');
if (end_null)
strbuf_addstr(buf, current_config_name());
else
quote_c_style(current_config_name(), buf, NULL, 0);
strbuf_addch(buf, term);
}
static int show_all_config(const char *key_, const char *value_, void *cb)
{
if (show_origin) {
struct strbuf buf = STRBUF_INIT;
show_config_origin(&buf);
/* Use fwrite as "buf" can contain \0's if "end_null" is set. */
fwrite(buf.buf, 1, buf.len, stdout);
strbuf_release(&buf);
}
if (!omit_values && value_)
printf("%s%c%s%c", key_, delim, value_, term);
else
printf("%s%c", key_, term);
return 0;
}
struct strbuf_list {
struct strbuf *items;
int nr;
int alloc;
};
static int format_config(struct strbuf *buf, const char *key_, const char *value_)
{
if (show_origin)
show_config_origin(buf);
if (show_keys)
strbuf_addstr(buf, key_);
if (!omit_values) {
if (show_keys)
strbuf_addch(buf, key_delim);
if (types == TYPE_INT)
strbuf_addf(buf, "%"PRId64,
git_config_int64(key_, value_ ? value_ : ""));
else if (types == TYPE_BOOL)
strbuf_addstr(buf, git_config_bool(key_, value_) ?
"true" : "false");
else if (types == TYPE_BOOL_OR_INT) {
int is_bool, v;
v = git_config_bool_or_int(key_, value_, &is_bool);
if (is_bool)
strbuf_addstr(buf, v ? "true" : "false");
else
strbuf_addf(buf, "%d", v);
} else if (types == TYPE_PATH) {
const char *v;
if (git_config_pathname(&v, key_, value_) < 0)
return -1;
strbuf_addstr(buf, v);
free((char *)v);
} else if (value_) {
strbuf_addstr(buf, value_);
} else {
/* Just show the key name; back out delimiter */
if (show_keys)
strbuf_setlen(buf, buf->len - 1);
}
}
strbuf_addch(buf, term);
return 0;
}
static int collect_config(const char *key_, const char *value_, void *cb)
{
struct strbuf_list *values = cb;
if (!use_key_regexp && strcmp(key_, key))
return 0;
if (use_key_regexp && regexec(key_regexp, key_, 0, NULL, 0))
return 0;
if (regexp != NULL &&
(do_not_match ^ !!regexec(regexp, (value_?value_:""), 0, NULL, 0)))
return 0;
ALLOC_GROW(values->items, values->nr + 1, values->alloc);
strbuf_init(&values->items[values->nr], 0);
return format_config(&values->items[values->nr++], key_, value_);
}
static int get_value(const char *key_, const char *regex_)
{
int ret = CONFIG_GENERIC_ERROR;
struct strbuf_list values = {NULL};
int i;
if (use_key_regexp) {
char *tl;
/*
* NEEDSWORK: this naive pattern lowercasing obviously does not
* work for more complex patterns like "^[^.]*Foo.*bar".
* Perhaps we should deprecate this altogether someday.
*/
key = xstrdup(key_);
for (tl = key + strlen(key) - 1;
tl >= key && *tl != '.';
tl--)
*tl = tolower(*tl);
for (tl = key; *tl && *tl != '.'; tl++)
*tl = tolower(*tl);
key_regexp = (regex_t*)xmalloc(sizeof(regex_t));
if (regcomp(key_regexp, key, REG_EXTENDED)) {
error("invalid key pattern: %s", key_);
free(key_regexp);
key_regexp = NULL;
ret = CONFIG_INVALID_PATTERN;
goto free_strings;
}
} else {
if (git_config_parse_key(key_, &key, NULL)) {
ret = CONFIG_INVALID_KEY;
goto free_strings;
}
}
if (regex_) {
if (regex_[0] == '!') {
do_not_match = 1;
regex_++;
}
regexp = (regex_t*)xmalloc(sizeof(regex_t));
if (regcomp(regexp, regex_, REG_EXTENDED)) {
error("invalid pattern: %s", regex_);
free(regexp);
regexp = NULL;
ret = CONFIG_INVALID_PATTERN;
goto free_strings;
}
}
git_config_with_options(collect_config, &values,
&given_config_source, respect_includes);
ret = !values.nr;
for (i = 0; i < values.nr; i++) {
struct strbuf *buf = values.items + i;
if (do_all || i == values.nr - 1)
fwrite(buf->buf, 1, buf->len, stdout);
strbuf_release(buf);
}
free(values.items);
free_strings:
free(key);
if (key_regexp) {
regfree(key_regexp);
free(key_regexp);
}
if (regexp) {
regfree(regexp);
free(regexp);
}
return ret;
}
static char *normalize_value(const char *key, const char *value)
{
if (!value)
return NULL;
if (types == 0 || types == TYPE_PATH)
/*
* We don't do normalization for TYPE_PATH here: If
* the path is like ~/foobar/, we prefer to store
* "~/foobar/" in the config file, and to expand the ~
* when retrieving the value.
*/
return xstrdup(value);
if (types == TYPE_INT)
return xstrfmt("%"PRId64, git_config_int64(key, value));
if (types == TYPE_BOOL)
return xstrdup(git_config_bool(key, value) ? "true" : "false");
if (types == TYPE_BOOL_OR_INT) {
int is_bool, v;
v = git_config_bool_or_int(key, value, &is_bool);
if (!is_bool)
return xstrfmt("%d", v);
else
return xstrdup(v ? "true" : "false");
}
die("BUG: cannot normalize type %d", types);
}
static int get_color_found;
static const char *get_color_slot;
static const char *get_colorbool_slot;
static char parsed_color[COLOR_MAXLEN];
static int git_get_color_config(const char *var, const char *value, void *cb)
{
if (!strcmp(var, get_color_slot)) {
if (!value)
config_error_nonbool(var);
if (color_parse(value, parsed_color) < 0)
return -1;
get_color_found = 1;
}
return 0;
}
static void get_color(const char *var, const char *def_color)
{
get_color_slot = var;
get_color_found = 0;
parsed_color[0] = '\0';
git_config_with_options(git_get_color_config, NULL,
&given_config_source, respect_includes);
if (!get_color_found && def_color) {
if (color_parse(def_color, parsed_color) < 0)
die(_("unable to parse default color value"));
}
fputs(parsed_color, stdout);
}
static int get_colorbool_found;
static int get_diff_color_found;
static int get_color_ui_found;
static int git_get_colorbool_config(const char *var, const char *value,
void *cb)
{
if (!strcmp(var, get_colorbool_slot))
get_colorbool_found = git_config_colorbool(var, value);
else if (!strcmp(var, "diff.color"))
get_diff_color_found = git_config_colorbool(var, value);
else if (!strcmp(var, "color.ui"))
get_color_ui_found = git_config_colorbool(var, value);
return 0;
}
static int get_colorbool(const char *var, int print)
{
get_colorbool_slot = var;
get_colorbool_found = -1;
get_diff_color_found = -1;
get_color_ui_found = -1;
git_config_with_options(git_get_colorbool_config, NULL,
&given_config_source, respect_includes);
if (get_colorbool_found < 0) {
if (!strcmp(get_colorbool_slot, "color.diff"))
get_colorbool_found = get_diff_color_found;
if (get_colorbool_found < 0)
get_colorbool_found = get_color_ui_found;
}
if (get_colorbool_found < 0)
/* default value if none found in config */
get_colorbool_found = GIT_COLOR_AUTO;
get_colorbool_found = want_color(get_colorbool_found);
if (print) {
printf("%s\n", get_colorbool_found ? "true" : "false");
return 0;
} else
return get_colorbool_found ? 0 : 1;
}
static void check_write(void)
{
if (!given_config_source.file && !startup_info->have_repository)
die("not in a git directory");
if (given_config_source.use_stdin)
die("writing to stdin is not supported");
if (given_config_source.blob)
die("writing config blobs is not supported");
}
struct urlmatch_current_candidate_value {
char value_is_null;
struct strbuf value;
};
static int urlmatch_collect_fn(const char *var, const char *value, void *cb)
{
struct string_list *values = cb;
struct string_list_item *item = string_list_insert(values, var);
struct urlmatch_current_candidate_value *matched = item->util;
if (!matched) {
matched = xmalloc(sizeof(*matched));
strbuf_init(&matched->value, 0);
item->util = matched;
} else {
strbuf_reset(&matched->value);
}
if (value) {
strbuf_addstr(&matched->value, value);
matched->value_is_null = 0;
} else {
matched->value_is_null = 1;
}
return 0;
}
static int get_urlmatch(const char *var, const char *url)
{
int ret;
char *section_tail;
struct string_list_item *item;
struct urlmatch_config config = { STRING_LIST_INIT_DUP };
struct string_list values = STRING_LIST_INIT_DUP;
config.collect_fn = urlmatch_collect_fn;
config.cascade_fn = NULL;
config.cb = &values;
if (!url_normalize(url, &config.url))
die("%s", config.url.err);
config.section = xstrdup_tolower(var);
section_tail = strchr(config.section, '.');
if (section_tail) {
*section_tail = '\0';
config.key = section_tail + 1;
show_keys = 0;
} else {
config.key = NULL;
show_keys = 1;
}
git_config_with_options(urlmatch_config_entry, &config,
&given_config_source, respect_includes);
ret = !values.nr;
for_each_string_list_item(item, &values) {
struct urlmatch_current_candidate_value *matched = item->util;
struct strbuf buf = STRBUF_INIT;
format_config(&buf, item->string,
matched->value_is_null ? NULL : matched->value.buf);
fwrite(buf.buf, 1, buf.len, stdout);
strbuf_release(&buf);
strbuf_release(&matched->value);
}
string_list_clear(&config.vars, 1);
string_list_clear(&values, 1);
free(config.url.url);
free((void *)config.section);
return ret;
}
static char *default_user_config(void)
{
struct strbuf buf = STRBUF_INIT;
strbuf_addf(&buf,
_("# This is Git's per-user configuration file.\n"
"[user]\n"
"# Please adapt and uncomment the following lines:\n"
"# name = %s\n"
"# email = %s\n"),
ident_default_name(),
ident_default_email());
return strbuf_detach(&buf, NULL);
}
int cmd_config(int argc, const char **argv, const char *prefix)
{
int nongit = !startup_info->have_repository;
char *value;
given_config_source.file = getenv(CONFIG_ENVIRONMENT);
argc = parse_options(argc, argv, prefix, builtin_config_options,
builtin_config_usage,
PARSE_OPT_STOP_AT_NON_OPTION);
if (use_global_config + use_system_config + use_local_config +
!!given_config_source.file + !!given_config_source.blob > 1) {
error("only one config file at a time.");
usage_with_options(builtin_config_usage, builtin_config_options);
}
if (given_config_source.file &&
!strcmp(given_config_source.file, "-")) {
given_config_source.file = NULL;
given_config_source.use_stdin = 1;
}
if (use_global_config) {
char *user_config = expand_user_path("~/.gitconfig");
char *xdg_config = xdg_config_home("config");
if (!user_config)
/*
* It is unknown if HOME/.gitconfig exists, so
* we do not know if we should write to XDG
* location; error out even if XDG_CONFIG_HOME
* is set and points at a sane location.
*/
die("$HOME not set");
if (access_or_warn(user_config, R_OK, 0) &&
xdg_config && !access_or_warn(xdg_config, R_OK, 0))
given_config_source.file = xdg_config;
else
given_config_source.file = user_config;
}
else if (use_system_config)
given_config_source.file = git_etc_gitconfig();
else if (use_local_config)
given_config_source.file = git_pathdup("config");
else if (given_config_source.file) {
if (!is_absolute_path(given_config_source.file) && prefix)
given_config_source.file =
xstrdup(prefix_filename(prefix,
strlen(prefix),
given_config_source.file));
}
if (respect_includes == -1)
respect_includes = !given_config_source.file;
if (end_null) {
term = '\0';
delim = '\n';
key_delim = '\n';
}
if (HAS_MULTI_BITS(types)) {
error("only one type at a time.");
usage_with_options(builtin_config_usage, builtin_config_options);
}
if ((actions & (ACTION_GET_COLOR|ACTION_GET_COLORBOOL)) && types) {
error("--get-color and variable type are incoherent");
usage_with_options(builtin_config_usage, builtin_config_options);
}
if (HAS_MULTI_BITS(actions)) {
error("only one action at a time.");
usage_with_options(builtin_config_usage, builtin_config_options);
}
if (actions == 0)
switch (argc) {
case 1: actions = ACTION_GET; break;
case 2: actions = ACTION_SET; break;
case 3: actions = ACTION_SET_ALL; break;
default:
usage_with_options(builtin_config_usage, builtin_config_options);
}
if (omit_values &&
!(actions == ACTION_LIST || actions == ACTION_GET_REGEXP)) {
error("--name-only is only applicable to --list or --get-regexp");
usage_with_options(builtin_config_usage, builtin_config_options);
}
if (show_origin && !(actions &
(ACTION_GET|ACTION_GET_ALL|ACTION_GET_REGEXP|ACTION_LIST))) {
error("--show-origin is only applicable to --get, --get-all, "
"--get-regexp, and --list.");
usage_with_options(builtin_config_usage, builtin_config_options);
}
if (actions == ACTION_LIST) {
check_argc(argc, 0, 0);
if (git_config_with_options(show_all_config, NULL,
&given_config_source,
respect_includes) < 0) {
if (given_config_source.file)
die_errno("unable to read config file '%s'",
given_config_source.file);
else
die("error processing config file(s)");
}
}
else if (actions == ACTION_EDIT) {
char *config_file;
check_argc(argc, 0, 0);
if (!given_config_source.file && nongit)
die("not in a git directory");
if (given_config_source.use_stdin)
die("editing stdin is not supported");
if (given_config_source.blob)
die("editing blobs is not supported");
git_config(git_default_config, NULL);
config_file = xstrdup(given_config_source.file ?
given_config_source.file : git_path("config"));
if (use_global_config) {
int fd = open(config_file, O_CREAT | O_EXCL | O_WRONLY, 0666);
if (fd) {
char *content = default_user_config();
write_str_in_full(fd, content);
free(content);
close(fd);
}
else if (errno != EEXIST)
die_errno(_("cannot create configuration file %s"), config_file);
}
launch_editor(config_file, NULL, NULL);
free(config_file);
}
else if (actions == ACTION_SET) {
int ret;
check_write();
check_argc(argc, 2, 2);
value = normalize_value(argv[0], argv[1]);
ret = git_config_set_in_file_gently(given_config_source.file, argv[0], value);
if (ret == CONFIG_NOTHING_SET)
error("cannot overwrite multiple values with a single value\n"
" Use a regexp, --add or --replace-all to change %s.", argv[0]);
return ret;
}
else if (actions == ACTION_SET_ALL) {
check_write();
check_argc(argc, 2, 3);
value = normalize_value(argv[0], argv[1]);
return git_config_set_multivar_in_file_gently(given_config_source.file,
argv[0], value, argv[2], 0);
}
else if (actions == ACTION_ADD) {
check_write();
check_argc(argc, 2, 2);
value = normalize_value(argv[0], argv[1]);
return git_config_set_multivar_in_file_gently(given_config_source.file,
argv[0], value,
CONFIG_REGEX_NONE, 0);
}
else if (actions == ACTION_REPLACE_ALL) {
check_write();
check_argc(argc, 2, 3);
value = normalize_value(argv[0], argv[1]);
return git_config_set_multivar_in_file_gently(given_config_source.file,
argv[0], value, argv[2], 1);
}
else if (actions == ACTION_GET) {
check_argc(argc, 1, 2);
return get_value(argv[0], argv[1]);
}
else if (actions == ACTION_GET_ALL) {
do_all = 1;
check_argc(argc, 1, 2);
return get_value(argv[0], argv[1]);
}
else if (actions == ACTION_GET_REGEXP) {
show_keys = 1;
use_key_regexp = 1;
do_all = 1;
check_argc(argc, 1, 2);
return get_value(argv[0], argv[1]);
}
else if (actions == ACTION_GET_URLMATCH) {
check_argc(argc, 2, 2);
return get_urlmatch(argv[0], argv[1]);
}
else if (actions == ACTION_UNSET) {
check_write();
check_argc(argc, 1, 2);
if (argc == 2)
return git_config_set_multivar_in_file_gently(given_config_source.file,
argv[0], NULL, argv[1], 0);
else
return git_config_set_in_file_gently(given_config_source.file,
argv[0], NULL);
}
else if (actions == ACTION_UNSET_ALL) {
check_write();
check_argc(argc, 1, 2);
return git_config_set_multivar_in_file_gently(given_config_source.file,
argv[0], NULL, argv[1], 1);
}
else if (actions == ACTION_RENAME_SECTION) {
int ret;
check_write();
check_argc(argc, 2, 2);
ret = git_config_rename_section_in_file(given_config_source.file,
argv[0], argv[1]);
if (ret < 0)
return ret;
if (ret == 0)
die("No such section!");
}
else if (actions == ACTION_REMOVE_SECTION) {
int ret;
check_write();
check_argc(argc, 1, 1);
ret = git_config_rename_section_in_file(given_config_source.file,
argv[0], NULL);
if (ret < 0)
return ret;
if (ret == 0)
die("No such section!");
}
else if (actions == ACTION_GET_COLOR) {
check_argc(argc, 1, 2);
get_color(argv[0], argv[1]);
}
else if (actions == ACTION_GET_COLORBOOL) {
check_argc(argc, 1, 2);
if (argc == 2)
color_stdout_is_tty = git_config_bool("command line", argv[1]);
return get_colorbool(argv[0], argc == 2);
}
return 0;
}
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