4 * This file is part of BeRTOS.
6 * Bertos is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 * As a special exception, you may use this file as part of a free software
21 * library without restriction. Specifically, if other files instantiate
22 * templates or use macros or inline functions from this file, or you compile
23 * this file and link it with other files to produce an executable, this
24 * file does not by itself cause the resulting executable to be covered by
25 * the GNU General Public License. This exception does not however
26 * invalidate any other reasons why the executable file might be covered by
27 * the GNU General Public License.
29 * Copyright 2009 Develer S.r.l. (http://www.develer.com/)
33 * \brief Ini file reader module.
35 * \author Luca Ottaviano <lottaviano@develer.com>
38 #include "ini_reader.h"
39 #include "cfg/cfg_ini_reader.h"
45 * Returns when the line containing the section is found.
46 * The file pointer is positioned at the start of the next line.
47 * Returns EOF if no section was found, 0 otherwise.
49 static int findSection(KFile *fd, const char *section, size_t section_len, char *line, size_t size)
51 while (kfile_gets(fd, line, size) != EOF)
55 /* accept only sections that begin at first char */
59 /* find the end-of-section character */
60 for (i = 0; i < size && *ptr != ']'; ++i, ++ptr)
63 /* The found section could be long that our section key */
67 /* did we find the correct section? */
68 if(strncmp(&line[1], section, section_len))
77 * Fills the argument with the key found in line
79 static char *getKey(const char *line, char *key, size_t size)
81 /* null-terminated string */
82 while (isspace(*line))
85 while (*line != '=' && !isspace(*line) && size)
91 size ? (key[i] = '\0') : (key[i-1] = '\0');
96 * Fills the argument with the value found in line.
98 static char *getValue(const char *line, char *value, size_t size)
100 while (*line++ != '=')
102 while (isspace(*line))
105 while (*line && size)
107 value[i++] = *line++;
110 size ? (value[i] = '\0') : (value[i-1] = '\0');
115 * Look for key inside a section.
117 * The function reads lines from input file. It fills the line parameter to allow splitting
118 * the key-value couple. It returns with error if a new section begins and no key was found.
119 * \return 0 if key was found, EOF on errors.
121 static int findKey(KFile *fd, const char *key, char *line, size_t size)
126 err = kfile_gets(fd, line, size);
128 getKey(line, curr_key, 30);
130 if (!strcmp(curr_key, key))
133 while (err != EOF && *line != '[');
138 * On errors, the function returns EOF and fills the buffer with the default value.
140 int ini_getString(KFile *fd, const char *section, const char *key, const char *default_value, char *buf, size_t size)
142 char line[CONFIG_INI_MAX_LINE_LEN];
144 if (kfile_seek(fd, 0, KSM_SEEK_SET) == EOF)
147 if (findSection(fd, section, strlen(section), line, CONFIG_INI_MAX_LINE_LEN) == EOF)
150 if (findKey(fd, key, line, CONFIG_INI_MAX_LINE_LEN) == EOF)
153 getValue(line, buf, size);
157 strncpy(buf, default_value, size);
159 buf[size - 1] = '\0';