1 files changed, 185 insertions, 17 deletions

diff --git a/config.c b/config.c
index 37385ce9d3..625e051876 100644
--- a/config.c
+++ b/config.c
@@ -7,6 +7,8 @@
  */
 #include "cache.h"
 #include "exec_cmd.h"
+#include "strbuf.h"
+#include "quote.h"
 
 #define MAXNAME (256)
 
@@ -18,6 +20,92 @@ static int zlib_compression_seen;
 
 const char *config_exclusive_filename = NULL;
 
+struct config_item
+{
+	struct config_item *next;
+	char *name;
+	char *value;
+};
+static struct config_item *config_parameters;
+static struct config_item **config_parameters_tail = &config_parameters;
+
+static void lowercase(char *p)
+{
+	for (; *p; p++)
+		*p = tolower(*p);
+}
+
+void git_config_push_parameter(const char *text)
+{
+	struct strbuf env = STRBUF_INIT;
+	const char *old = getenv(CONFIG_DATA_ENVIRONMENT);
+	if (old) {
+		strbuf_addstr(&env, old);
+		strbuf_addch(&env, ' ');
+	}
+	sq_quote_buf(&env, text);
+	setenv(CONFIG_DATA_ENVIRONMENT, env.buf, 1);
+	strbuf_release(&env);
+}
+
+int git_config_parse_parameter(const char *text)
+{
+	struct config_item *ct;
+	struct strbuf tmp = STRBUF_INIT;
+	struct strbuf **pair;
+	strbuf_addstr(&tmp, text);
+	pair = strbuf_split(&tmp, '=');
+	if (pair[0]->len && pair[0]->buf[pair[0]->len - 1] == '=')
+		strbuf_setlen(pair[0], pair[0]->len - 1);
+	strbuf_trim(pair[0]);
+	if (!pair[0]->len) {
+		strbuf_list_free(pair);
+		return -1;
+	}
+	ct = xcalloc(1, sizeof(struct config_item));
+	ct->name = strbuf_detach(pair[0], NULL);
+	if (pair[1]) {
+		strbuf_trim(pair[1]);
+		ct->value = strbuf_detach(pair[1], NULL);
+	}
+	strbuf_list_free(pair);
+	lowercase(ct->name);
+	*config_parameters_tail = ct;
+	config_parameters_tail = &ct->next;
+	return 0;
+}
+
+int git_config_parse_environment(void) {
+	const char *env = getenv(CONFIG_DATA_ENVIRONMENT);
+	char *envw;
+	const char **argv = NULL;
+	int nr = 0, alloc = 0;
+	int i;
+
+	if (!env)
+		return 0;
+	/* sq_dequote will write over it */
+	envw = xstrdup(env);
+
+	if (sq_dequote_to_argv(envw, &argv, &nr, &alloc) < 0) {
+		free(envw);
+		return error("bogus format in " CONFIG_DATA_ENVIRONMENT);
+	}
+
+	for (i = 0; i < nr; i++) {
+		if (git_config_parse_parameter(argv[i]) < 0) {
+			error("bogus config parameter: %s", argv[i]);
+			free(argv);
+			free(envw);
+			return -1;
+		}
+	}
+
+	free(argv);
+	free(envw);
+	return 0;
+}
+
 static int get_next_char(void)
 {
 	int c;
@@ -322,17 +410,40 @@ unsigned long git_config_ulong(const char *name, const char *value)
 	return ret;
 }
 
-int git_config_bool_or_int(const char *name, const char *value, int *is_bool)
+static int git_config_maybe_bool_text(const char *name, const char *value)
 {
-	*is_bool = 1;
 	if (!value)
 		return 1;
 	if (!*value)
 		return 0;
-	if (!strcasecmp(value, "true") || !strcasecmp(value, "yes") || !strcasecmp(value, "on"))
+	if (!strcasecmp(value, "true")
+	    || !strcasecmp(value, "yes")
+	    || !strcasecmp(value, "on"))
 		return 1;
-	if (!strcasecmp(value, "false") || !strcasecmp(value, "no") || !strcasecmp(value, "off"))
+	if (!strcasecmp(value, "false")
+	    || !strcasecmp(value, "no")
+	    || !strcasecmp(value, "off"))
 		return 0;
+	return -1;
+}
+
+int git_config_maybe_bool(const char *name, const char *value)
+{
+	long v = git_config_maybe_bool_text(name, value);
+	if (0 <= v)
+		return v;
+	if (git_parse_long(value, &v))
+		return !!v;
+	return -1;
+}
+
+int git_config_bool_or_int(const char *name, const char *value, int *is_bool)
+{
+	int v = git_config_maybe_bool_text(name, value);
+	if (0 <= v) {
+		*is_bool = 1;
+		return v;
+	}
 	*is_bool = 0;
 	return git_config_int(name, value);
 }
@@ -388,6 +499,13 @@ static int git_default_core_config(const char *var, const char *value)
 		return 0;
 	}
 
+	if (!strcmp(var, "core.abbrevguard")) {
+		unique_abbrev_extra_length = git_config_int(var, value);
+		if (unique_abbrev_extra_length < 0)
+			unique_abbrev_extra_length = 0;
+		return 0;
+	}
+
 	if (!strcmp(var, "core.bare")) {
 		is_bare_repository_cfg = git_config_bool(var, value);
 		return 0;
@@ -461,7 +579,9 @@ static int git_default_core_config(const char *var, const char *value)
 
 	if (!strcmp(var, "core.autocrlf")) {
 		if (value && !strcasecmp(value, "input")) {
-			auto_crlf = -1;
+			if (eol == EOL_CRLF)
+				return error("core.autocrlf=input conflicts with core.eol=crlf");
+			auto_crlf = AUTO_CRLF_INPUT;
 			return 0;
 		}
 		auto_crlf = git_config_bool(var, value);
@@ -477,6 +597,20 @@ static int git_default_core_config(const char *var, const char *value)
 		return 0;
 	}
 
+	if (!strcmp(var, "core.eol")) {
+		if (value && !strcasecmp(value, "lf"))
+			eol = EOL_LF;
+		else if (value && !strcasecmp(value, "crlf"))
+			eol = EOL_CRLF;
+		else if (value && !strcasecmp(value, "native"))
+			eol = EOL_NATIVE;
+		else
+			eol = EOL_UNSET;
+		if (eol == EOL_CRLF && auto_crlf == AUTO_CRLF_INPUT)
+			return error("core.autocrlf=input conflicts with core.eol=crlf");
+		return 0;
+	}
+
 	if (!strcmp(var, "core.notesref")) {
 		notes_ref_name = xstrdup(value);
 		return 0;
@@ -488,6 +622,9 @@ static int git_default_core_config(const char *var, const char *value)
 	if (!strcmp(var, "core.editor"))
 		return git_config_string(&editor_program, var, value);
 
+	if (!strcmp(var, "core.askpass"))
+		return git_config_string(&askpass_program, var, value);
+
 	if (!strcmp(var, "core.excludesfile"))
 		return git_config_pathname(&excludes_file, var, value);
 
@@ -518,6 +655,11 @@ static int git_default_core_config(const char *var, const char *value)
 		return 0;
 	}
 
+	if (!strcmp(var, "core.sparsecheckout")) {
+		core_apply_sparse_checkout = git_config_bool(var, value);
+		return 0;
+	}
+
 	/* Add other config variables here and to Documentation/config.txt. */
 	return 0;
 }
@@ -528,8 +670,7 @@ static int git_default_user_config(const char *var, const char *value)
 		if (!value)
 			return config_error_nonbool(var);
 		strlcpy(git_default_name, value, sizeof(git_default_name));
-		if (git_default_email[0])
-			user_ident_explicitly_given = 1;
+		user_ident_explicitly_given |= IDENT_NAME_GIVEN;
 		return 0;
 	}
 
@@ -537,8 +678,7 @@ static int git_default_user_config(const char *var, const char *value)
 		if (!value)
 			return config_error_nonbool(var);
 		strlcpy(git_default_email, value, sizeof(git_default_email));
-		if (git_default_name[0])
-			user_ident_explicitly_given = 1;
+		user_ident_explicitly_given |= IDENT_MAIL_GIVEN;
 		return 0;
 	}
 
@@ -680,7 +820,7 @@ const char *git_etc_gitconfig(void)
 	return system_wide;
 }
 
-static int git_env_bool(const char *k, int def)
+int git_env_bool(const char *k, int def)
 {
 	const char *v = getenv(k);
 	return v ? git_config_bool(k, v) : def;
@@ -696,10 +836,25 @@ int git_config_global(void)
 	return !git_env_bool("GIT_CONFIG_NOGLOBAL", 0);
 }
 
-int git_config(config_fn_t fn, void *data)
+int git_config_from_parameters(config_fn_t fn, void *data)
+{
+	static int loaded_environment;
+	const struct config_item *ct;
+
+	if (!loaded_environment) {
+		if (git_config_parse_environment() < 0)
+			return -1;
+		loaded_environment = 1;
+	}
+	for (ct = config_parameters; ct; ct = ct->next)
+		if (fn(ct->name, ct->value, data) < 0)
+			return -1;
+	return 0;
+}
+
+int git_config_early(config_fn_t fn, void *data, const char *repo_config)
 {
 	int ret = 0, found = 0;
-	char *repo_config = NULL;
 	const char *home = NULL;
 
 	/* Setting $GIT_CONFIG makes git read _only_ the given config file. */
@@ -721,14 +876,27 @@ int git_config(config_fn_t fn, void *data)
 		free(user_config);
 	}
 
-	repo_config = git_pathdup("config");
-	if (!access(repo_config, R_OK)) {
+	if (repo_config && !access(repo_config, R_OK)) {
 		ret += git_config_from_file(fn, repo_config, data);
 		found += 1;
 	}
-	free(repo_config);
-	if (found == 0)
-		return -1;
+
+	ret += git_config_from_parameters(fn, data);
+	if (config_parameters)
+		found += 1;
+
+	return ret == 0 ? found : ret;
+}
+
+int git_config(config_fn_t fn, void *data)
+{
+	char *repo_config = NULL;
+	int ret;
+
+	repo_config = git_pathdup("config");
+	ret = git_config_early(fn, data, repo_config);
+	if (repo_config)
+		free(repo_config);
 	return ret;
 }