Make git-repo-config a builtin

Signed-off-by: Matthias Kestenholz <matthias@spinlock.ch>
Signed-off-by: Junio C Hamano <junkio@cox.net>

1 files changed, 200 insertions, 0 deletions

diff --git a/builtin-repo-config.c b/builtin-repo-config.c
new file mode 100644
index 000000000..c821e2271
--- /dev/null
+++ b/builtin-repo-config.c
@@ -0,0 +1,200 @@
+#include "builtin.h"
+#include "cache.h"
+#include <regex.h>
+
+static const char git_config_set_usage[] =
+"git-repo-config [ --bool | --int ] [--get | --get-all | --get-regexp | --replace-all | --unset | --unset-all] name [value [value_regex]] | --list";
+
+static char* key = NULL;
+static regex_t* key_regexp = NULL;
+static regex_t* regexp = NULL;
+static int show_keys = 0;
+static int use_key_regexp = 0;
+static int do_all = 0;
+static int do_not_match = 0;
+static int seen = 0;
+static enum { T_RAW, T_INT, T_BOOL } type = T_RAW;
+
+static int show_all_config(const char *key_, const char *value_)
+{
+	if (value_)
+		printf("%s=%s\n", key_, value_);
+	else
+		printf("%s\n", key_);
+	return 0;
+}
+
+static int show_config(const char* key_, const char* value_)
+{
+	char value[256];
+	const char *vptr = value;
+	int dup_error = 0;
+
+	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;
+
+	if (show_keys)
+		printf("%s ", key_);
+	if (seen && !do_all)
+		dup_error = 1;
+	if (type == T_INT)
+		sprintf(value, "%d", git_config_int(key_, value_?value_:""));
+	else if (type == T_BOOL)
+		vptr = git_config_bool(key_, value_) ? "true" : "false";
+	else
+		vptr = value_?value_:"";
+	seen++;
+	if (dup_error) {
+		error("More than one value for the key %s: %s",
+				key_, vptr);
+	}
+	else
+		printf("%s\n", vptr);
+
+	return 0;
+}
+
+static int get_value(const char* key_, const char* regex_)
+{
+	int ret = -1;
+	char *tl;
+	char *global = NULL, *repo_config = NULL;
+	const char *local;
+
+	local = getenv("GIT_CONFIG");
+	if (!local) {
+		const char *home = getenv("HOME");
+		local = getenv("GIT_CONFIG_LOCAL");
+		if (!local)
+			local = repo_config = strdup(git_path("config"));
+		if (home)
+			global = strdup(mkpath("%s/.gitconfig", home));
+	}
+
+	key = strdup(key_);
+	for (tl=key+strlen(key)-1; tl >= key && *tl != '.'; --tl)
+		*tl = tolower(*tl);
+	for (tl=key; *tl && *tl != '.'; ++tl)
+		*tl = tolower(*tl);
+
+	if (use_key_regexp) {
+		key_regexp = (regex_t*)malloc(sizeof(regex_t));
+		if (regcomp(key_regexp, key, REG_EXTENDED)) {
+			fprintf(stderr, "Invalid key pattern: %s\n", key_);
+			goto free_strings;
+		}
+	}
+
+	if (regex_) {
+		if (regex_[0] == '!') {
+			do_not_match = 1;
+			regex_++;
+		}
+
+		regexp = (regex_t*)malloc(sizeof(regex_t));
+		if (regcomp(regexp, regex_, REG_EXTENDED)) {
+			fprintf(stderr, "Invalid pattern: %s\n", regex_);
+			goto free_strings;
+		}
+	}
+
+	if (do_all && global)
+		git_config_from_file(show_config, global);
+	git_config_from_file(show_config, local);
+	if (!do_all && !seen && global)
+		git_config_from_file(show_config, global);
+
+	free(key);
+	if (regexp) {
+		regfree(regexp);
+		free(regexp);
+	}
+
+	if (do_all)
+		ret = !seen;
+	else
+		ret =  (seen == 1) ? 0 : 1;
+
+free_strings:
+	if (repo_config)
+		free(repo_config);
+	if (global)
+		free(global);
+	return ret;
+}
+
+int cmd_repo_config(int argc, const char **argv, const char *prefix)
+{
+	int nongit = 0;
+	setup_git_directory_gently(&nongit);
+
+	while (1 < argc) {
+		if (!strcmp(argv[1], "--int"))
+			type = T_INT;
+		else if (!strcmp(argv[1], "--bool"))
+			type = T_BOOL;
+		else if (!strcmp(argv[1], "--list") || !strcmp(argv[1], "-l"))
+			return git_config(show_all_config);
+		else
+			break;
+		argc--;
+		argv++;
+	}
+
+	switch (argc) {
+	case 2:
+		return get_value(argv[1], NULL);
+	case 3:
+		if (!strcmp(argv[1], "--unset"))
+			return git_config_set(argv[2], NULL);
+		else if (!strcmp(argv[1], "--unset-all"))
+			return git_config_set_multivar(argv[2], NULL, NULL, 1);
+		else if (!strcmp(argv[1], "--get"))
+			return get_value(argv[2], NULL);
+		else if (!strcmp(argv[1], "--get-all")) {
+			do_all = 1;
+			return get_value(argv[2], NULL);
+		} else if (!strcmp(argv[1], "--get-regexp")) {
+			show_keys = 1;
+			use_key_regexp = 1;
+			do_all = 1;
+			return get_value(argv[2], NULL);
+		} else
+
+			return git_config_set(argv[1], argv[2]);
+	case 4:
+		if (!strcmp(argv[1], "--unset"))
+			return git_config_set_multivar(argv[2], NULL, argv[3], 0);
+		else if (!strcmp(argv[1], "--unset-all"))
+			return git_config_set_multivar(argv[2], NULL, argv[3], 1);
+		else if (!strcmp(argv[1], "--get"))
+			return get_value(argv[2], argv[3]);
+		else if (!strcmp(argv[1], "--get-all")) {
+			do_all = 1;
+			return get_value(argv[2], argv[3]);
+		} else if (!strcmp(argv[1], "--get-regexp")) {
+			show_keys = 1;
+			use_key_regexp = 1;
+			do_all = 1;
+			return get_value(argv[2], argv[3]);
+		} else if (!strcmp(argv[1], "--replace-all"))
+
+			return git_config_set_multivar(argv[2], argv[3], NULL, 1);
+		else
+
+			return git_config_set_multivar(argv[1], argv[2], argv[3], 0);
+	case 5:
+		if (!strcmp(argv[1], "--replace-all"))
+			return git_config_set_multivar(argv[2], argv[3], argv[4], 1);
+	case 1:
+	default:
+		usage(git_config_set_usage);
+	}
+	return 0;
+}