use xstrdup_or_null to replace ternary conditionals

[thirdparty/git.git] / config.c

diff --git a/config.c b/config.c
index 83c913ad0928aba882a86f361170cd256adbd445..400d2e47de5bdab60291ca38e3151745ad35c488 100644 (file)
--- a/config.c
+++ b/config.c
@@ -136,7 +136,6 @@ static int handle_path_include(const char *path, struct config_include_data *inc
 int git_config_include(const char *var, const char *value, void *data)
 {
        struct config_include_data *inc = data;
-       const char *type;
        int ret;
 
        /*
@@ -147,10 +146,7 @@ int git_config_include(const char *var, const char *value, void *data)
        if (ret < 0)
                return ret;
 
-       if (!skip_prefix(var, "include.", &type))
-               return ret;
-
-       if (!strcmp(type, "path"))
+       if (!strcmp(var, "include.path"))
                ret = handle_path_include(value, inc);
        return ret;
 }
@@ -1143,12 +1139,28 @@ const char *git_etc_gitconfig(void)
        return system_wide;
 }
 
+/*
+ * Parse environment variable 'k' as a boolean (in various
+ * possible spellings); if missing, use the default value 'def'.
+ */
 int git_env_bool(const char *k, int def)
 {
        const char *v = getenv(k);
        return v ? git_config_bool(k, v) : def;
 }
 
+/*
+ * Parse environment variable 'k' as ulong with possibly a unit
+ * suffix; if missing, use the default value 'val'.
+ */
+unsigned long git_env_ulong(const char *k, unsigned long val)
+{
+       const char *v = getenv(k);
+       if (v && !git_parse_ulong(v, &val))
+               die("failed to parse %s", k);
+       return val;
+}
+
 int git_config_system(void)
 {
        return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
@@ -1317,7 +1329,7 @@ static int configset_add_value(struct config_set *cs, const char *key, const cha
                string_list_init(&e->value_list, 1);
                hashmap_add(&cs->config_hash, e);
        }
-       si = string_list_append_nodup(&e->value_list, value ? xstrdup(value) : NULL);
+       si = string_list_append_nodup(&e->value_list, xstrdup_or_null(value));
 
        ALLOC_GROW(cs->list.items, cs->list.nr + 1, cs->list.alloc);
        l_item = &cs->list.items[cs->list.nr++];
@@ -1611,10 +1623,15 @@ static struct {
 
 static int matches(const char *key, const char *value)
 {
-       return !strcmp(key, store.key) &&
-               (store.value_regex == NULL ||
-                (store.do_not_match ^
-                 !regexec(store.value_regex, value, 0, NULL, 0)));
+       if (strcmp(key, store.key))
+               return 0; /* not ours */
+       if (!store.value_regex)
+               return 1; /* always matches */
+       if (store.value_regex == CONFIG_REGEX_NONE)
+               return 0; /* never matches */
+
+       return store.do_not_match ^
+               (value && !regexec(store.value_regex, value, 0, NULL, 0));
 }
 
 static int store_aux(const char *key, const char *value, void *cb)
@@ -1876,6 +1893,8 @@ out_free_ret_1:
 /*
  * If value==NULL, unset in (remove from) config,
  * if value_regex!=NULL, disregard key/value pairs where value does not match.
+ * if value_regex==CONFIG_REGEX_NONE, do not match any existing values
+ *     (only add a new one)
  * if multi_replace==0, nothing, or only one matching key/value is replaced,
  *     else all matching key/values (regardless how many) are removed,
  *     before the new pair is written.
@@ -1959,6 +1978,8 @@ int git_config_set_multivar_in_file(const char *config_filename,
 
                if (value_regex == NULL)
                        store.value_regex = NULL;
+               else if (value_regex == CONFIG_REGEX_NONE)
+                       store.value_regex = CONFIG_REGEX_NONE;
                else {
                        if (value_regex[0] == '!') {
                                store.do_not_match = 1;
@@ -1990,7 +2011,8 @@ int git_config_set_multivar_in_file(const char *config_filename,
                if (git_config_from_file(store_aux, config_filename, NULL)) {
                        error("invalid config file %s", config_filename);
                        free(store.key);
-                       if (store.value_regex != NULL) {
+                       if (store.value_regex != NULL &&
+                           store.value_regex != CONFIG_REGEX_NONE) {
                                regfree(store.value_regex);
                                free(store.value_regex);
                        }
@@ -1999,7 +2021,8 @@ int git_config_set_multivar_in_file(const char *config_filename,
                }
 
                free(store.key);
-               if (store.value_regex != NULL) {
+               if (store.value_regex != NULL &&
+                   store.value_regex != CONFIG_REGEX_NONE) {
                        regfree(store.value_regex);
                        free(store.value_regex);
                }