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#include "config-ini.h"
#include "types.h"
#include <ctype.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
static void free_field(ini_field_t *field) {
free(field->key);
free(field->value);
free(field);
}
static void free_section(ini_section_t *section) {
ini_field_t *field, *tmp;
list_for_each_entry_safe(field, tmp, §ion->fields, node)
free_field(field);
free(section->name);
free(section);
}
void free_ini_file(ini_file_t *file) {
ini_section_t *section, *tmp;
list_for_each_entry_safe(section, tmp, &file->sections, node)
free_section(section);
free(file);
}
static bool add_field(ini_section_t *section, const char *key, const char *value) {
ini_field_t *field = calloc(1, sizeof(*field));
if (!field)
return false;
field->key = strdup(key);
field->value = strdup(value);
if (!field->key || !field->value) {
free_field(field);
return false;
}
list_add_tail(&field->node, §ion->fields);
return true;
}
static ini_section_t * add_section(ini_file_t *file, const char *name) {
ini_section_t *section = calloc(1, sizeof(*section));
if (!section)
return NULL;
section->name = strdup(name);
if (!section->name) {
free(section);
return false;
}
INIT_LIST_HEAD(§ion->fields);
list_add_tail(§ion->node, &file->sections);
return section;
}
ini_file_t * read_ini_file(const char *filename) {
FILE *f = fopen(filename, "r");
if (!f)
return NULL;
ini_file_t *file = calloc(1, sizeof(*file));
if (!file)
goto error;
INIT_LIST_HEAD(&file->sections);
ini_section_t *section = NULL;
int err = 0;
char *line = NULL;
size_t n = 0;
while (getline(&line, &n, f) >= 0) {
char *input = line;
while (isspace(input[0]))
input++;
if (input[0] == '#' || input[0] == '\0')
continue;
size_t len = strlen(input);
while (isspace(input[len-1]))
len--;
if (input[0] == '[') {
if (input[len-1] != ']') {
err = EINVAL;
goto error;
}
input[len-1] = '\0';
section = add_section(file, input+1);
if (!section)
goto error;
} else {
if (!section) {
err = EINVAL;
goto error;
}
input[len] = '\0';
char *delim = strchr(input, '=');
if (!delim) {
err = EINVAL;
goto error;
}
*delim = '\0';
if (!add_field(section, input, delim+1))
goto error;
}
}
if (ferror(f))
err = EIO;
error:
free(line);
fclose(f);
if (err) {
free_ini_file(file);
errno = err;
return NULL;
}
return file;
}
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