teach config --blob option to parse config from database

[thirdparty/git.git] / builtin / config.c

diff --git a/builtin/config.c b/builtin/config.c
index 33c9bf9d84f514330f12de5cbd9dfb610a1b16de..8d01b7ab461b6db3a2e28499f9846739a133ed3b 100644 (file)
--- a/builtin/config.c
+++ b/builtin/config.c
@@ -21,6 +21,7 @@ static char term = '\n';
 
 static int use_global_config, use_system_config, use_local_config;
 static const char *given_config_file;
+static const char *given_config_blob;
 static int actions, types;
 static const char *get_color_slot, *get_colorbool_slot;
 static int end_null;
@@ -53,6 +54,7 @@ static struct option builtin_config_options[] = {
        OPT_BOOLEAN(0, "system", &use_system_config, N_("use system config file")),
        OPT_BOOLEAN(0, "local", &use_local_config, N_("use repository config file")),
        OPT_STRING('f', "file", &given_config_file, N_("file"), N_("use given config file")),
+       OPT_STRING(0, "blob", &given_config_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),
@@ -218,7 +220,8 @@ static int get_value(const char *key_, const char *regex_)
        }
 
        git_config_with_options(collect_config, &values,
-                               given_config_file, respect_includes);
+                               given_config_file, given_config_blob,
+                               respect_includes);
 
        ret = !values.nr;
 
@@ -302,7 +305,8 @@ static void get_color(const char *def_color)
        get_color_found = 0;
        parsed_color[0] = '\0';
        git_config_with_options(git_get_color_config, NULL,
-                               given_config_file, respect_includes);
+                               given_config_file, given_config_blob,
+                               respect_includes);
 
        if (!get_color_found && def_color)
                color_parse(def_color, "command line", parsed_color);
@@ -330,7 +334,8 @@ static int get_colorbool(int print)
        get_colorbool_found = -1;
        get_diff_color_found = -1;
        git_config_with_options(git_get_colorbool_config, NULL,
-                               given_config_file, respect_includes);
+                               given_config_file, given_config_blob,
+                               respect_includes);
 
        if (get_colorbool_found < 0) {
                if (!strcmp(get_colorbool_slot, "color.diff"))
@@ -348,6 +353,12 @@ static int get_colorbool(int print)
                return get_colorbool_found ? 0 : 1;
 }
 
+static void check_blob_write(void)
+{
+       if (given_config_blob)
+               die("writing config blobs is not supported");
+}
+
 int cmd_config(int argc, const char **argv, const char *prefix)
 {
        int nongit = !startup_info->have_repository;
@@ -359,7 +370,8 @@ int cmd_config(int argc, const char **argv, const char *prefix)
                             builtin_config_usage,
                             PARSE_OPT_STOP_AT_NON_OPTION);
 
-       if (use_global_config + use_system_config + use_local_config + !!given_config_file > 1) {
+       if (use_global_config + use_system_config + use_local_config +
+           !!given_config_file + !!given_config_blob > 1) {
                error("only one config file at a time.");
                usage_with_options(builtin_config_usage, builtin_config_options);
        }
@@ -438,6 +450,7 @@ int cmd_config(int argc, const char **argv, const char *prefix)
                check_argc(argc, 0, 0);
                if (git_config_with_options(show_all_config, NULL,
                                            given_config_file,
+                                           given_config_blob,
                                            respect_includes) < 0) {
                        if (given_config_file)
                                die_errno("unable to read config file '%s'",
@@ -450,6 +463,8 @@ int cmd_config(int argc, const char **argv, const char *prefix)
                check_argc(argc, 0, 0);
                if (!given_config_file && nongit)
                        die("not in a git directory");
+               if (given_config_blob)
+                       die("editing blobs is not supported");
                git_config(git_default_config, NULL);
                launch_editor(given_config_file ?
                              given_config_file : git_path("config"),
@@ -457,6 +472,7 @@ int cmd_config(int argc, const char **argv, const char *prefix)
        }
        else if (actions == ACTION_SET) {
                int ret;
+               check_blob_write();
                check_argc(argc, 2, 2);
                value = normalize_value(argv[0], argv[1]);
                ret = git_config_set_in_file(given_config_file, argv[0], value);
@@ -466,18 +482,21 @@ int cmd_config(int argc, const char **argv, const char *prefix)
                return ret;
        }
        else if (actions == ACTION_SET_ALL) {
+               check_blob_write();
                check_argc(argc, 2, 3);
                value = normalize_value(argv[0], argv[1]);
                return git_config_set_multivar_in_file(given_config_file,
                                                       argv[0], value, argv[2], 0);
        }
        else if (actions == ACTION_ADD) {
+               check_blob_write();
                check_argc(argc, 2, 2);
                value = normalize_value(argv[0], argv[1]);
                return git_config_set_multivar_in_file(given_config_file,
                                                       argv[0], value, "^$", 0);
        }
        else if (actions == ACTION_REPLACE_ALL) {
+               check_blob_write();
                check_argc(argc, 2, 3);
                value = normalize_value(argv[0], argv[1]);
                return git_config_set_multivar_in_file(given_config_file,
@@ -500,6 +519,7 @@ int cmd_config(int argc, const char **argv, const char *prefix)
                return get_value(argv[0], argv[1]);
        }
        else if (actions == ACTION_UNSET) {
+               check_blob_write();
                check_argc(argc, 1, 2);
                if (argc == 2)
                        return git_config_set_multivar_in_file(given_config_file,
@@ -509,12 +529,14 @@ int cmd_config(int argc, const char **argv, const char *prefix)
                                                      argv[0], NULL);
        }
        else if (actions == ACTION_UNSET_ALL) {
+               check_blob_write();
                check_argc(argc, 1, 2);
                return git_config_set_multivar_in_file(given_config_file,
                                                       argv[0], NULL, argv[1], 1);
        }
        else if (actions == ACTION_RENAME_SECTION) {
                int ret;
+               check_blob_write();
                check_argc(argc, 2, 2);
                ret = git_config_rename_section_in_file(given_config_file,
                                                        argv[0], argv[1]);
@@ -525,6 +547,7 @@ int cmd_config(int argc, const char **argv, const char *prefix)
        }
        else if (actions == ACTION_REMOVE_SECTION) {
                int ret;
+               check_blob_write();
                check_argc(argc, 1, 1);
                ret = git_config_rename_section_in_file(given_config_file,
                                                        argv[0], NULL);