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>
28 #include "utils_parse_option.h"
30 int parse_string (char **ret_buffer, char **ret_string)
37 /* Eat up leading spaces. */
39 while (isspace ((int) *string))
55 while ((*buffer != '"') && (*buffer != 0))
57 /* Un-escape backslashes */
61 /* Catch a backslash at the end of buffer */
69 /* No quote sign has been found */
78 /* Check for trailing spaces. */
79 if ((*buffer != 0) && !isspace ((int) *buffer))
82 else /* an unquoted string */
85 while ((*buffer != 0) && !isspace ((int) *buffer))
94 /* Eat up trailing spaces */
95 while (isspace ((int) *buffer))
102 } /* int parse_string */
107 * Parses an ``option'' as used with the unixsock and exec commands. An
108 * option is of the form:
110 * name1="value with \"quotes\""
111 * name2="value \\ backslash"
112 * However, if the value does *not* contain a space character, you can skip
115 int parse_option (char **ret_buffer, char **ret_key, char **ret_value)
122 buffer = *ret_buffer;
124 /* Eat up leading spaces */
126 while (isspace ((int) *key))
131 /* Look for the equal sign */
133 while (isalnum ((int) *buffer) || *buffer == '_' || *buffer == ':')
135 if ((*buffer != '=') || (buffer == key))
139 /* Empty values must be written as "" */
140 if (isspace ((int) *buffer) || (*buffer == 0))
143 status = parse_string (&buffer, &value);
147 /* NB: parse_string will have eaten up all trailing spaces. */
149 *ret_buffer = buffer;
154 } /* int parse_option */
156 /* vim: set sw=2 ts=8 tw=78 et : */