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authorJunio C Hamano <gitster@pobox.com>2014-09-02 13:24:17 -0700
committerJunio C Hamano <gitster@pobox.com>2014-09-02 13:24:18 -0700
commit56f214e0716dec043b50a7e1e8cc181be2ef7df2 (patch)
tree9233df7f61bba4048b92768a07b97db9ecb7b2d3 /config.c
parente8e4ce72cd9ebb5e5dfe580f98b7764ca6dc08ea (diff)
parent4c715ebb96acc77008e9cbebc381738611c6006f (diff)
downloadgit-56f214e0716dec043b50a7e1e8cc181be2ef7df2.tar.gz
Merge branch 'ta/config-set'
Add in-core caching layer to let us avoid reading the same configuration files number of times. * ta/config-set: test-config: add tests for the config_set API add `config_set` API for caching config-like files
Diffstat (limited to 'config.c')
-rw-r--r--config.c274
1 files changed, 274 insertions, 0 deletions
diff --git a/config.c b/config.c
index 058505cb8d..a191328a9d 100644
--- a/config.c
+++ b/config.c
@@ -9,6 +9,8 @@
#include "exec_cmd.h"
#include "strbuf.h"
#include "quote.h"
+#include "hashmap.h"
+#include "string-list.h"
struct config_source {
struct config_source *prev;
@@ -33,10 +35,23 @@ struct config_source {
long (*do_ftell)(struct config_source *c);
};
+struct config_set_element {
+ struct hashmap_entry ent;
+ char *key;
+ struct string_list value_list;
+};
+
static struct config_source *cf;
static int zlib_compression_seen;
+/*
+ * Default config_set that contains key-value pairs from the usual set of config
+ * config files (i.e repo specific .git/config, user wide ~/.gitconfig, XDG
+ * config file and the global /etc/gitconfig)
+ */
+static struct config_set the_config_set;
+
static int config_file_fgetc(struct config_source *conf)
{
return fgetc(conf->u.file);
@@ -1210,6 +1225,262 @@ int git_config(config_fn_t fn, void *data)
return git_config_with_options(fn, data, NULL, 1);
}
+static struct config_set_element *configset_find_element(struct config_set *cs, const char *key)
+{
+ struct config_set_element k;
+ struct config_set_element *found_entry;
+ char *normalized_key;
+ int ret;
+ /*
+ * `key` may come from the user, so normalize it before using it
+ * for querying entries from the hashmap.
+ */
+ ret = git_config_parse_key(key, &normalized_key, NULL);
+
+ if (ret)
+ return NULL;
+
+ hashmap_entry_init(&k, strhash(normalized_key));
+ k.key = normalized_key;
+ found_entry = hashmap_get(&cs->config_hash, &k, NULL);
+ free(normalized_key);
+ return found_entry;
+}
+
+static int configset_add_value(struct config_set *cs, const char *key, const char *value)
+{
+ struct config_set_element *e;
+ e = configset_find_element(cs, key);
+ /*
+ * Since the keys are being fed by git_config*() callback mechanism, they
+ * are already normalized. So simply add them without any further munging.
+ */
+ if (!e) {
+ e = xmalloc(sizeof(*e));
+ hashmap_entry_init(e, strhash(key));
+ e->key = xstrdup(key);
+ string_list_init(&e->value_list, 1);
+ hashmap_add(&cs->config_hash, e);
+ }
+ string_list_append_nodup(&e->value_list, value ? xstrdup(value) : NULL);
+
+ return 0;
+}
+
+static int config_set_element_cmp(const struct config_set_element *e1,
+ const struct config_set_element *e2, const void *unused)
+{
+ return strcmp(e1->key, e2->key);
+}
+
+void git_configset_init(struct config_set *cs)
+{
+ hashmap_init(&cs->config_hash, (hashmap_cmp_fn)config_set_element_cmp, 0);
+ cs->hash_initialized = 1;
+}
+
+void git_configset_clear(struct config_set *cs)
+{
+ struct config_set_element *entry;
+ struct hashmap_iter iter;
+ if (!cs->hash_initialized)
+ return;
+
+ hashmap_iter_init(&cs->config_hash, &iter);
+ while ((entry = hashmap_iter_next(&iter))) {
+ free(entry->key);
+ string_list_clear(&entry->value_list, 0);
+ }
+ hashmap_free(&cs->config_hash, 1);
+ cs->hash_initialized = 0;
+}
+
+static int config_set_callback(const char *key, const char *value, void *cb)
+{
+ struct config_set *cs = cb;
+ configset_add_value(cs, key, value);
+ return 0;
+}
+
+int git_configset_add_file(struct config_set *cs, const char *filename)
+{
+ return git_config_from_file(config_set_callback, filename, cs);
+}
+
+int git_configset_get_value(struct config_set *cs, const char *key, const char **value)
+{
+ const struct string_list *values = NULL;
+ /*
+ * Follows "last one wins" semantic, i.e., if there are multiple matches for the
+ * queried key in the files of the configset, the value returned will be the last
+ * value in the value list for that key.
+ */
+ values = git_configset_get_value_multi(cs, key);
+
+ if (!values)
+ return 1;
+ assert(values->nr > 0);
+ *value = values->items[values->nr - 1].string;
+ return 0;
+}
+
+const struct string_list *git_configset_get_value_multi(struct config_set *cs, const char *key)
+{
+ struct config_set_element *e = configset_find_element(cs, key);
+ return e ? &e->value_list : NULL;
+}
+
+int git_configset_get_string_const(struct config_set *cs, const char *key, const char **dest)
+{
+ const char *value;
+ if (!git_configset_get_value(cs, key, &value))
+ return git_config_string(dest, key, value);
+ else
+ return 1;
+}
+
+int git_configset_get_string(struct config_set *cs, const char *key, char **dest)
+{
+ return git_configset_get_string_const(cs, key, (const char **)dest);
+}
+
+int git_configset_get_int(struct config_set *cs, const char *key, int *dest)
+{
+ const char *value;
+ if (!git_configset_get_value(cs, key, &value)) {
+ *dest = git_config_int(key, value);
+ return 0;
+ } else
+ return 1;
+}
+
+int git_configset_get_ulong(struct config_set *cs, const char *key, unsigned long *dest)
+{
+ const char *value;
+ if (!git_configset_get_value(cs, key, &value)) {
+ *dest = git_config_ulong(key, value);
+ return 0;
+ } else
+ return 1;
+}
+
+int git_configset_get_bool(struct config_set *cs, const char *key, int *dest)
+{
+ const char *value;
+ if (!git_configset_get_value(cs, key, &value)) {
+ *dest = git_config_bool(key, value);
+ return 0;
+ } else
+ return 1;
+}
+
+int git_configset_get_bool_or_int(struct config_set *cs, const char *key,
+ int *is_bool, int *dest)
+{
+ const char *value;
+ if (!git_configset_get_value(cs, key, &value)) {
+ *dest = git_config_bool_or_int(key, value, is_bool);
+ return 0;
+ } else
+ return 1;
+}
+
+int git_configset_get_maybe_bool(struct config_set *cs, const char *key, int *dest)
+{
+ const char *value;
+ if (!git_configset_get_value(cs, key, &value)) {
+ *dest = git_config_maybe_bool(key, value);
+ if (*dest == -1)
+ return -1;
+ return 0;
+ } else
+ return 1;
+}
+
+int git_configset_get_pathname(struct config_set *cs, const char *key, const char **dest)
+{
+ const char *value;
+ if (!git_configset_get_value(cs, key, &value))
+ return git_config_pathname(dest, key, value);
+ else
+ return 1;
+}
+
+static void git_config_check_init(void)
+{
+ if (the_config_set.hash_initialized)
+ return;
+ git_configset_init(&the_config_set);
+ git_config(config_set_callback, &the_config_set);
+}
+
+void git_config_clear(void)
+{
+ if (!the_config_set.hash_initialized)
+ return;
+ git_configset_clear(&the_config_set);
+}
+
+int git_config_get_value(const char *key, const char **value)
+{
+ git_config_check_init();
+ return git_configset_get_value(&the_config_set, key, value);
+}
+
+const struct string_list *git_config_get_value_multi(const char *key)
+{
+ git_config_check_init();
+ return git_configset_get_value_multi(&the_config_set, key);
+}
+
+int git_config_get_string_const(const char *key, const char **dest)
+{
+ git_config_check_init();
+ return git_configset_get_string_const(&the_config_set, key, dest);
+}
+
+int git_config_get_string(const char *key, char **dest)
+{
+ git_config_check_init();
+ return git_config_get_string_const(key, (const char **)dest);
+}
+
+int git_config_get_int(const char *key, int *dest)
+{
+ git_config_check_init();
+ return git_configset_get_int(&the_config_set, key, dest);
+}
+
+int git_config_get_ulong(const char *key, unsigned long *dest)
+{
+ git_config_check_init();
+ return git_configset_get_ulong(&the_config_set, key, dest);
+}
+
+int git_config_get_bool(const char *key, int *dest)
+{
+ git_config_check_init();
+ return git_configset_get_bool(&the_config_set, key, dest);
+}
+
+int git_config_get_bool_or_int(const char *key, int *is_bool, int *dest)
+{
+ git_config_check_init();
+ return git_configset_get_bool_or_int(&the_config_set, key, is_bool, dest);
+}
+
+int git_config_get_maybe_bool(const char *key, int *dest)
+{
+ git_config_check_init();
+ return git_configset_get_maybe_bool(&the_config_set, key, dest);
+}
+
+int git_config_get_pathname(const char *key, const char **dest)
+{
+ git_config_check_init();
+ return git_configset_get_pathname(&the_config_set, key, dest);
+}
+
/*
* Find all the stuff for git_config_set() below.
*/
@@ -1705,6 +1976,9 @@ int git_config_set_multivar_in_file(const char *config_filename,
lock = NULL;
ret = 0;
+ /* Invalidate the config cache */
+ git_config_clear();
+
out_free:
if (lock)
rollback_lock_file(lock);