1 files changed, 30 insertions, 0 deletions

diff --git a/src/url.c b/src/url.c
new file mode 100644
index 0000000..a3a29e7
--- /dev/null
+++ b/src/url.c
@@ -0,0 +1,30 @@
+int urlencode (char * o, char * i /* o must have at least strlen(i)*3+1 bytes of memory allocated */) {
+	size_t written = 0;
+	for (; *i; i++) {
+		if (isalnum(*i) || *i == '.' || *i == '_' || *i == '-' || *i == '~') {
+			o[written++] = *i;
+		} else {
+			sprintf(o+written, "%%%02X", *i);
+			written += 3;
+		}
+	}
+	return 1;
+}
+int urldecode (char * o, char * i /* o must have at least strlen(i)+1 bytes memory allocated */) {
+	size_t written = 0;
+	char buf[] = "00";
+	for (; *i; i++) {
+		if (*i == '%') {
+			buf[0] = *++i;
+			buf[1] = *++i;
+			if (!buf[0] || !buf[1]) { /* malformed */
+				o[written++] = '\0';
+				return 0;
+			}
+			o[written++] = strtol(buf, NULL, 16);
+		} else {
+			o[written++] = *i;
+		}
+	}
+	return 1;
+}