2 * collectd - src/utils_parse_option.c
3 * Copyright (C) 2008 Florian Forster
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
24 * Florian octo Forster <octo at collectd.org>
29 #include "utils_parse_option.h"
31 int parse_string(char **ret_buffer, char **ret_string) {
37 /* Eat up leading spaces. */
39 while (isspace((int)*string))
54 while ((*buffer != '"') && (*buffer != 0)) {
55 /* Un-escape backslashes */
56 if (*buffer == '\\') {
58 /* Catch a backslash at the end of buffer */
66 /* No quote sign has been found */
75 /* Check for trailing spaces. */
76 if ((*buffer != 0) && !isspace((int)*buffer))
78 } else /* an unquoted string */
81 while ((*buffer != 0) && !isspace((int)*buffer))
89 /* Eat up trailing spaces */
90 while (isspace((int)*buffer))
97 } /* int parse_string */
102 * Parses an ``option'' as used with the unixsock and exec commands. An
103 * option is of the form:
105 * name1="value with \"quotes\""
106 * name2="value \\ backslash"
107 * However, if the value does *not* contain a space character, you can skip
110 int parse_option(char **ret_buffer, char **ret_key, char **ret_value) {
116 buffer = *ret_buffer;
118 /* Eat up leading spaces */
120 while (isspace((int)*key))
125 /* Look for the equal sign */
127 while (isalnum((int)*buffer) || *buffer == '_' || *buffer == ':')
129 if ((*buffer != '=') || (buffer == key))
133 /* Empty values must be written as "" */
134 if (isspace((int)*buffer) || (*buffer == 0))
137 status = parse_string(&buffer, &value);
141 /* NB: parse_string will have eaten up all trailing spaces. */
143 *ret_buffer = buffer;
148 } /* int parse_option */