1 files changed, 73 insertions, 0 deletions
diff --git a/src/client/misc.c b/src/client/misc.c
new file mode 100644
index 0000000..827bd90
--- /dev/null
+++ b/src/client/misc.c
@@ -0,0 +1,73 @@
+/* -*- mode: c; c-file-style: "openbsd" -*- */
+/*
+ * Copyright (c) 2012 Vincent Bernat <bernat@luffy.cx>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, 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 "client.h"
+#include <string.h>
+#include <ctype.h>
+
+/**
+ * Check if an element is present in a comma-separated list.
+ *
+ * @param list    Comma-separated list of elements.
+ * @param element Element we want to check for.
+ * @return 0 if the element was not found, 1 otherwise.
+ */
+int
+contains(const char *list, const char *element)
+{
+	int len;
+	if (element == NULL || list == NULL) return 0;
+	while (list) {
+		len = strlen(element);
+		if (!strncmp(list, element, len) &&
+		    (list[len] == '\0' || list[len] == ','))
+			return 1;
+		list = strchr(list, ',');
+		if (list) list++;
+	}
+	return 0;
+}
+
+/**
+ * Transform a string to a tag. This puts the string into lower space and
+ * replace spaces with '-'. The result is statically allocated.
+ *
+ * @param value String to transform to a tag.
+ * @return The tagged value or the string "none" if @c value is @c NULL
+ */
+const char *
+totag(const char *value)
+{
+	int i;
+	static char *result = NULL;
+	free(result);
+	result = NULL;
+	if (!value) return "none";
+	result = calloc(1, strlen(value) + 1);
+	if (!result) return "none";
+	for (i = 0; i < strlen(value); i++) {
+		switch (value[i]) {
+		case ' ':
+			result[i] = '-';
+			break;
+		default:
+			result[i] = tolower((int)value[i]);
+			break;
+		}
+	}
+	return result;
+}