fast-import: prevent producing bad delta
[gitweb.git] / config.c
index d06fb19d511c29e92aa840c664618ca4a6f73fe6..113723bf3b069ed907cd71831ddff91a0ed113da 100644 (file)
--- a/config.c
+++ b/config.c
@@ -20,14 +20,6 @@ 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++)
@@ -47,9 +39,9 @@ void git_config_push_parameter(const char *text)
        strbuf_release(&env);
 }
 
-int git_config_parse_parameter(const char *text)
+static int git_config_parse_parameter(const char *text,
+                                     config_fn_t fn, void *data)
 {
-       struct config_item *ct;
        struct strbuf tmp = STRBUF_INIT;
        struct strbuf **pair;
        strbuf_addstr(&tmp, text);
@@ -59,22 +51,19 @@ int git_config_parse_parameter(const char *text)
        strbuf_trim(pair[0]);
        if (!pair[0]->len) {
                strbuf_list_free(pair);
-               return -1;
+               return error("bogus config parameter: %s", text);
        }
-       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);
+       lowercase(pair[0]->buf);
+       if (fn(pair[0]->buf, pair[1] ? pair[1]->buf : NULL, data) < 0) {
+               strbuf_list_free(pair);
+               return -1;
        }
        strbuf_list_free(pair);
-       lowercase(ct->name);
-       *config_parameters_tail = ct;
-       config_parameters_tail = &ct->next;
        return 0;
 }
 
-int git_config_parse_environment(void) {
+int git_config_from_parameters(config_fn_t fn, void *data)
+{
        const char *env = getenv(CONFIG_DATA_ENVIRONMENT);
        char *envw;
        const char **argv = NULL;
@@ -92,8 +81,7 @@ int git_config_parse_environment(void) {
        }
 
        for (i = 0; i < nr; i++) {
-               if (git_config_parse_parameter(argv[i]) < 0) {
-                       error("bogus config parameter: %s", argv[i]);
+               if (git_config_parse_parameter(argv[i], fn, data) < 0) {
                        free(argv);
                        free(envw);
                        return -1;
@@ -102,7 +90,7 @@ int git_config_parse_environment(void) {
 
        free(argv);
        free(envw);
-       return 0;
+       return nr > 0;
 }
 
 static int get_next_char(void)
@@ -133,23 +121,21 @@ static int get_next_char(void)
 
 static char *parse_value(void)
 {
-       static char value[1024];
-       int quote = 0, comment = 0, len = 0, space = 0;
+       static struct strbuf value = STRBUF_INIT;
+       int quote = 0, comment = 0, space = 0;
 
+       strbuf_reset(&value);
        for (;;) {
                int c = get_next_char();
-               if (len >= sizeof(value) - 1)
-                       return NULL;
                if (c == '\n') {
                        if (quote)
                                return NULL;
-                       value[len] = 0;
-                       return value;
+                       return value.buf;
                }
                if (comment)
                        continue;
                if (isspace(c) && !quote) {
-                       if (len)
+                       if (value.len)
                                space++;
                        continue;
                }
@@ -160,7 +146,7 @@ static char *parse_value(void)
                        }
                }
                for (; space; space--)
-                       value[len++] = ' ';
+                       strbuf_addch(&value, ' ');
                if (c == '\\') {
                        c = get_next_char();
                        switch (c) {
@@ -182,14 +168,14 @@ static char *parse_value(void)
                        default:
                                return NULL;
                        }
-                       value[len++] = c;
+                       strbuf_addch(&value, c);
                        continue;
                }
                if (c == '"') {
                        quote = 1-quote;
                        continue;
                }
-               value[len++] = c;
+               strbuf_addch(&value, c);
        }
 }
 
@@ -585,7 +571,7 @@ static int git_default_core_config(const char *var, const char *value)
 
        if (!strcmp(var, "core.autocrlf")) {
                if (value && !strcasecmp(value, "input")) {
-                       if (eol == EOL_CRLF)
+                       if (core_eol == EOL_CRLF)
                                return error("core.autocrlf=input conflicts with core.eol=crlf");
                        auto_crlf = AUTO_CRLF_INPUT;
                        return 0;
@@ -605,14 +591,14 @@ static int git_default_core_config(const char *var, const char *value)
 
        if (!strcmp(var, "core.eol")) {
                if (value && !strcasecmp(value, "lf"))
-                       eol = EOL_LF;
+                       core_eol = EOL_LF;
                else if (value && !strcasecmp(value, "crlf"))
-                       eol = EOL_CRLF;
+                       core_eol = EOL_CRLF;
                else if (value && !strcasecmp(value, "native"))
-                       eol = EOL_NATIVE;
+                       core_eol = EOL_NATIVE;
                else
-                       eol = EOL_UNSET;
-               if (eol == EOL_CRLF && auto_crlf == AUTO_CRLF_INPUT)
+                       core_eol = EOL_UNSET;
+               if (core_eol == EOL_CRLF && auto_crlf == AUTO_CRLF_INPUT)
                        return error("core.autocrlf=input conflicts with core.eol=crlf");
                return 0;
        }
@@ -839,22 +825,6 @@ int git_config_system(void)
        return !git_env_bool("GIT_CONFIG_NOSYSTEM", 0);
 }
 
-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;
@@ -884,9 +854,16 @@ int git_config_early(config_fn_t fn, void *data, const char *repo_config)
                found += 1;
        }
 
-       ret += git_config_from_parameters(fn, data);
-       if (config_parameters)
-               found += 1;
+       switch (git_config_from_parameters(fn, data)) {
+       case -1: /* error */
+               ret--;
+               break;
+       case 0: /* found nothing */
+               break;
+       default: /* found at least one item */
+               found++;
+               break;
+       }
 
        return ret == 0 ? found : ret;
 }
@@ -1125,12 +1102,12 @@ int git_config_parse_key(const char *key, char **store_key, int *baselen_)
 
        if (last_dot == NULL || last_dot == key) {
                error("key does not contain a section: %s", key);
-               return -2;
+               return -CONFIG_NO_SECTION_OR_NAME;
        }
 
        if (!last_dot[1]) {
                error("key does not contain variable name: %s", key);
-               return -2;
+               return -CONFIG_NO_SECTION_OR_NAME;
        }
 
        baselen = last_dot - key;
@@ -1167,7 +1144,7 @@ int git_config_parse_key(const char *key, char **store_key, int *baselen_)
 
 out_free_ret_1:
        free(*store_key);
-       return -1;
+       return -CONFIG_INVALID_KEY;
 }
 
 /*
@@ -1223,7 +1200,7 @@ int git_config_set_multivar(const char *key, const char *value,
        if (fd < 0) {
                error("could not lock config file %s: %s", config_filename, strerror(errno));
                free(store.key);
-               ret = -1;
+               ret = CONFIG_NO_LOCK;
                goto out_free;
        }
 
@@ -1237,12 +1214,12 @@ int git_config_set_multivar(const char *key, const char *value,
                if ( ENOENT != errno ) {
                        error("opening %s: %s", config_filename,
                              strerror(errno));
-                       ret = 3; /* same as "invalid config file" */
+                       ret = CONFIG_INVALID_FILE; /* same as "invalid config file" */
                        goto out_free;
                }
                /* if nothing to unset, error out */
                if (value == NULL) {
-                       ret = 5;
+                       ret = CONFIG_NOTHING_SET;
                        goto out_free;
                }
 
@@ -1270,7 +1247,7 @@ int git_config_set_multivar(const char *key, const char *value,
                                        REG_EXTENDED)) {
                                error("invalid pattern: %s", value_regex);
                                free(store.value_regex);
-                               ret = 6;
+                               ret = CONFIG_INVALID_PATTERN;
                                goto out_free;
                        }
                }
@@ -1292,7 +1269,7 @@ int git_config_set_multivar(const char *key, const char *value,
                                regfree(store.value_regex);
                                free(store.value_regex);
                        }
-                       ret = 3;
+                       ret = CONFIG_INVALID_FILE;
                        goto out_free;
                }
 
@@ -1305,7 +1282,7 @@ int git_config_set_multivar(const char *key, const char *value,
                /* if nothing to unset, or too many matches, error out */
                if ((store.seen == 0 && value == NULL) ||
                                (store.seen > 1 && multi_replace == 0)) {
-                       ret = 5;
+                       ret = CONFIG_NOTHING_SET;
                        goto out_free;
                }
 
@@ -1366,7 +1343,7 @@ int git_config_set_multivar(const char *key, const char *value,
 
        if (commit_lock_file(lock) < 0) {
                error("could not commit config file %s", config_filename);
-               ret = 4;
+               ret = CONFIG_NO_WRITE;
                goto out_free;
        }
 
@@ -1502,10 +1479,10 @@ int git_config_rename_section(const char *old_name, const char *new_name)
                }
        }
        fclose(config_file);
- unlock_and_out:
+unlock_and_out:
        if (commit_lock_file(lock) < 0)
                ret = error("could not commit config file %s", config_filename);
- out:
+out:
        free(config_filename);
        return ret;
 }