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/*
* ini.c - generic INI parser
* Copyright (C) 2017-2019 Vivien Didelot
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <ctype.h>
#include <string.h>
#include "ini.h"
#include "line.h"
#include "log.h"
struct ini {
ini_sec_cb_t *sec_cb;
ini_prop_cb_t *prop_cb;
void *data;
};
static int ini_section(struct ini *ini, char *section)
{
if (!ini->sec_cb)
return 0;
return ini->sec_cb(section, ini->data);
}
static int ini_property(struct ini *ini, char *key, char *value)
{
if (!ini->prop_cb)
return 0;
return ini->prop_cb(key, value, ini->data);
}
static int ini_parse_line(char *line, size_t num, void *data)
{
/* comment or empty line? */
if (*line == '\0' || *line == '#')
return 0;
/* section? */
if (*line == '[') {
char *closing, *section;
closing = strchr(line, ']');
if (!closing) {
error("malformated section \"%s\"", line);
return -EINVAL;
}
if (*(closing + 1) != '\0') {
error("trailing characters \"%s\"", closing);
return -EINVAL;
}
section = line + 1;
*closing = '\0';
return ini_section(data, section);
}
/* property? */
if (isalpha(*line) || *line == '_') {
char *equals, *key, *value;
equals = strchr(line, '=');
if (!equals) {
error("malformated property, should be a key=value pair");
return -EINVAL;
}
*equals = '\0';
key = line;
value = equals + 1;
return ini_property(data, key, value);
}
error("invalid INI syntax for line: \"%s\"", line);
return -EINVAL;
}
int ini_read(int fd, size_t count, ini_sec_cb_t *sec_cb, ini_prop_cb_t *prop_cb,
void *data)
{
struct ini ini = {
.sec_cb = sec_cb,
.prop_cb = prop_cb,
.data = data,
};
return line_read(fd, count, ini_parse_line, &ini);
}
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