window: Add a cheesy parser for ini-files, use it in desktop-shell
diff --git a/clients/config.c b/clients/config.c
new file mode 100644
index 0000000..f389b69
--- /dev/null
+++ b/clients/config.c
@@ -0,0 +1,137 @@
+/*
+ * Copyright © 2011 Intel Corporation
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission. The copyright holders make no representations
+ * about the suitability of this software for any purpose. It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#include <string.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <assert.h>
+
+#include <window.h>
+
+static int
+handle_key(const struct config_key *key, const char *value)
+{
+ char *end, *s;
+ int i, len;
+
+ switch (key->type) {
+ case CONFIG_KEY_INTEGER:
+ i = strtol(value, &end, 0);
+ if (*end != '\n') {
+ fprintf(stderr, "invalid integer: %s\n", value);
+ return -1;
+ }
+ *(int *)key->data = i;
+ return 0;
+
+ case CONFIG_KEY_STRING:
+ len = strlen(value);
+ s = malloc(len);
+ if (s == NULL)
+ return -1;
+ memcpy(s, value, len - 1);
+ s[len - 1] = '\0';
+ *(char **)key->data = s;
+ return 0;
+
+ case CONFIG_KEY_BOOL:
+ if (strcmp(value, "false") == 0)
+ *(int *)key->data = 0;
+ else if (strcmp(value, "true") == 0)
+ *(int *)key->data = 1;
+ else {
+ fprintf(stderr, "invalid bool: %s\n", value);
+ return -1;
+ }
+ return 0;
+
+ default:
+ assert(0);
+ break;
+ }
+}
+
+int
+parse_config_file(const char *path,
+ const struct config_section *sections, int num_sections,
+ void *data)
+{
+ FILE *fp;
+ char line[512], *p;
+ const struct config_section *current = NULL;
+ int i;
+
+ fp = fopen(path, "r");
+ if (fp == NULL) {
+ fprintf(stderr, "couldn't open %s\n", path);
+ return -1;
+ }
+
+ while (fgets(line, sizeof line, fp)) {
+ if (line[0] == '#' || line[0] == '\n') {
+ continue;
+ } if (line[0] == '[') {
+ p = strchr(&line[1], ']');
+ if (!p || p[1] != '\n') {
+ fprintf(stderr, "malformed "
+ "section header: %s\n", line);
+ fclose(fp);
+ return -1;
+ }
+ if (current && current->done)
+ current->done(data);
+ p[0] = '\0';
+ for (i = 0; i < num_sections; i++) {
+ if (strcmp(sections[i].name, &line[1]) == 0) {
+ current = §ions[i];
+ break;
+ }
+ }
+ if (i == num_sections)
+ current = NULL;
+ } else if (p = strchr(line, '='), p != NULL) {
+ if (current == NULL)
+ continue;
+ p[0] = '\0';
+ for (i = 0; i < current->num_keys; i++) {
+ if (strcmp(current->keys[i].name, line) == 0) {
+ if (handle_key(¤t->keys[i], &p[1]) < 0) {
+ fclose(fp);
+ return -1;
+ }
+ break;
+ }
+ }
+ } else {
+ fprintf(stderr, "malformed config line: %s\n", line);
+ fclose(fp);
+ return -1;
+ }
+ }
+
+ if (current && current->done)
+ current->done(data);
+
+ fclose(fp);
+
+ return 0;
+}