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/*
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* Copyright © 2011 Intel Corporation
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the name of the copyright holders not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no representations
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* about the suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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#include <string.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <assert.h>
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#include "config-parser.h"
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static int
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handle_key(const struct config_key *key, const char *value)
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{
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char *end, *s;
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int i, len;
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unsigned int ui;
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switch (key->type) {
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case CONFIG_KEY_INTEGER:
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i = strtol(value, &end, 0);
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if (*end != '\n') {
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fprintf(stderr, "invalid integer: %s\n", value);
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return -1;
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}
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*(int *)key->data = i;
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return 0;
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case CONFIG_KEY_UNSIGNED_INTEGER:
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ui = strtoul(value, &end, 0);
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if (*end != '\n') {
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fprintf(stderr, "invalid integer: %s\n", value);
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return -1;
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}
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*(unsigned int *)key->data = ui;
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return 0;
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case CONFIG_KEY_STRING:
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len = strlen(value);
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s = malloc(len);
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if (s == NULL)
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return -1;
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memcpy(s, value, len - 1);
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s[len - 1] = '\0';
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*(char **)key->data = s;
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return 0;
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case CONFIG_KEY_BOOLEAN:
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if (strcmp(value, "false\n") == 0)
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*(int *)key->data = 0;
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else if (strcmp(value, "true\n") == 0)
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*(int *)key->data = 1;
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else {
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fprintf(stderr, "invalid bool: %s\n", value);
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return -1;
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}
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return 0;
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default:
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assert(0);
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break;
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}
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return -1;
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}
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int
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parse_config_file(const char *path,
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const struct config_section *sections, int num_sections,
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void *data)
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{
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FILE *fp;
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char line[512], *p;
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const struct config_section *current = NULL;
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int i;
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fp = fopen(path, "r");
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if (fp == NULL) {
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fprintf(stderr, "couldn't open %s\n", path);
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return -1;
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}
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while (fgets(line, sizeof line, fp)) {
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if (line[0] == '#' || line[0] == '\n') {
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continue;
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} if (line[0] == '[') {
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p = strchr(&line[1], ']');
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if (!p || p[1] != '\n') {
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fprintf(stderr, "malformed "
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"section header: %s\n", line);
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fclose(fp);
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return -1;
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}
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if (current && current->done)
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current->done(data);
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p[0] = '\0';
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for (i = 0; i < num_sections; i++) {
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if (strcmp(sections[i].name, &line[1]) == 0) {
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current = §ions[i];
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break;
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}
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}
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if (i == num_sections)
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current = NULL;
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} else if (p = strchr(line, '='), p != NULL) {
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if (current == NULL)
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continue;
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p[0] = '\0';
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for (i = 0; i < current->num_keys; i++) {
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if (strcmp(current->keys[i].name, line) == 0) {
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if (handle_key(¤t->keys[i], &p[1]) < 0) {
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fclose(fp);
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return -1;
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}
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break;
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}
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}
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} else {
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fprintf(stderr, "malformed config line: %s\n", line);
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fclose(fp);
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return -1;
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}
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}
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if (current && current->done)
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current->done(data);
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fclose(fp);
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return 0;
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}
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char *
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config_file_path(const char *name)
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{
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const char dotconf[] = "/.config/";
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const char *config_dir;
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const char *home_dir;
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char *path;
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size_t size;
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config_dir = getenv("XDG_CONFIG_HOME");
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if (!config_dir) {
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home_dir = getenv("HOME");
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if (!home_dir) {
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fprintf(stderr, "HOME is not set, using cwd.\n");
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return strdup(name);
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}
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size = strlen(home_dir) + sizeof dotconf + strlen(name);
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path = malloc(size);
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if (!path)
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return NULL;
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snprintf(path, size, "%s%s%s", home_dir, dotconf, name);
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return path;
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}
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size = strlen(config_dir) + 1 + strlen(name) + 1;
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path = malloc(size);
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if (!path)
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return NULL;
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snprintf(path, size, "%s/%s", config_dir, name);
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return path;
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}
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