-/**
- * collectd - src/utils_parse_option.c
- * Copyright (C) 2008 Florian Forster
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- *
- * Authors:
- * Florian octo Forster <octo at collectd.org>
- **/
-
-#include "collectd.h"
-
-#include "utils_parse_option.h"
-
-int parse_string(char **ret_buffer, char **ret_string) {
- char *buffer;
- char *string;
-
- buffer = *ret_buffer;
-
- /* Eat up leading spaces. */
- string = buffer;
- while (isspace((int)*string))
- string++;
- if (*string == 0)
- return 1;
-
- /* A quoted string */
- if (*string == '"') {
- char *dst;
-
- string++;
- if (*string == 0)
- return 1;
-
- dst = string;
- buffer = string;
- while ((*buffer != '"') && (*buffer != 0)) {
- /* Un-escape backslashes */
- if (*buffer == '\\') {
- buffer++;
- /* Catch a backslash at the end of buffer */
- if (*buffer == 0)
- return -1;
- }
- *dst = *buffer;
- buffer++;
- dst++;
- }
- /* No quote sign has been found */
- if (*buffer == 0)
- return -1;
-
- *dst = 0;
- dst++;
- *buffer = 0;
- buffer++;
-
- /* Check for trailing spaces. */
- if ((*buffer != 0) && !isspace((int)*buffer))
- return -1;
- } else /* an unquoted string */
- {
- buffer = string;
- while ((*buffer != 0) && !isspace((int)*buffer))
- buffer++;
- if (*buffer != 0) {
- *buffer = 0;
- buffer++;
- }
- }
-
- /* Eat up trailing spaces */
- while (isspace((int)*buffer))
- buffer++;
-
- *ret_buffer = buffer;
- *ret_string = string;
-
- return 0;
-} /* int parse_string */
-
-/*
- * parse_option
- * ------------
- * Parses an ``option'' as used with the unixsock and exec commands. An
- * option is of the form:
- * name0="value"
- * name1="value with \"quotes\""
- * name2="value \\ backslash"
- * However, if the value does *not* contain a space character, you can skip
- * the quotes.
- */
-int parse_option(char **ret_buffer, char **ret_key, char **ret_value) {
- char *buffer;
- char *key;
- char *value;
- int status;
-
- buffer = *ret_buffer;
-
- /* Eat up leading spaces */
- key = buffer;
- while (isspace((int)*key))
- key++;
- if (*key == 0)
- return 1;
-
- /* Look for the equal sign */
- buffer = key;
- while (isalnum((int)*buffer) || *buffer == '_' || *buffer == ':')
- buffer++;
- if ((*buffer != '=') || (buffer == key))
- return 1;
- *buffer = 0;
- buffer++;
- /* Empty values must be written as "" */
- if (isspace((int)*buffer) || (*buffer == 0))
- return -1;
-
- status = parse_string(&buffer, &value);
- if (status != 0)
- return -1;
-
- /* NB: parse_string will have eaten up all trailing spaces. */
-
- *ret_buffer = buffer;
- *ret_key = key;
- *ret_value = value;
-
- return 0;
-} /* int parse_option */