10hbackup_config.c

#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "10hbackup_config.h"

int
read_config(char *path, config_key_value **config) {
	char line[1024];
	char *key, *value;
	FILE *fd;
	int nb_elem = 0, value_size, key_size;
	config_key_value *config_ptr;

	fd = fopen(path, "r");
	if (fd == NULL) {
		fprintf(stderr, "Unable to open config file '%s': %s\n", path, strerror(errno));
		return (-1);
	}

	*config = malloc(0);

	while(fgets(line, sizeof(line), fd)) {
		config_ptr = realloc(*config, (nb_elem + 1) * sizeof(config_key_value));
		*config = config_ptr;
		key = strtok(line, "=");
		value = strtok(NULL, "=");
		value[strlen(value) - 1] = '\0';
		value_size = strlen(value) + 1;
		key_size = strlen(key) + 1;

		config_ptr[nb_elem].key = malloc(key_size);
		config_ptr[nb_elem].value = malloc(value_size);
		strncpy(config_ptr[nb_elem].key, key, key_size);
		strncpy(config_ptr[nb_elem].value, value, value_size);

		nb_elem++;
	}

	return (nb_elem);
}

char *
get_conf(config_key_value *config, int config_size, char *key) {
	int config_key_size = strlen(key);
	char *res = NULL;

	for (int i = 0; i < config_size; i++) {
		if (strncmp(config[i].key, key, config_key_size) == 0) {
			res = config[i].value;
		}
	}

	return res;
}

void
free_config(config_key_value *config, int config_size) {
	for (int i = 0; i < config_size; i++) {
		free(config[i].key);
		free(config[i].value);
	}
	free(config);
}