1 files changed, 44 insertions, 0 deletions
diff --git a/tileserver/netstring.c b/tileserver/netstring.c
new file mode 100644
index 000000000..b30ca5a67
--- /dev/null
+++ b/tileserver/netstring.c
@@ -0,0 +1,44 @@
+/*
+ * netstring.c:
+ * Write netstrings to strings.
+ *
+ * Copyright (c) 2006 UK Citizens Online Democracy. All rights reserved.
+ * Email: chris@mysociety.org; WWW: http://www.mysociety.org/
+ *
+ */
+
+static const char rcsid[] = "$Id: netstring.c,v 1.1 2006-09-20 10:25:14 chris Exp $";
+
+#include <sys/types.h>
+#include <stdio.h>
+#include <string.h>
+
+/* netstring_write OUT BUFFER LEN
+ * Write the LEN-byte BUFFER to OUT as a netstring, returning the number of
+ * bytes. If OUT is NULL, returns the number of bytes required. */
+size_t netstring_write(char *out, const void *buf, const size_t len) {
+    size_t l = 0;
+    char dummy[32];
+    l += sprintf(out ? out : dummy, "%u:", (unsigned)len);
+    if (out) memcpy(p, buf, len);
+    l += len;
+    if (out) buf[l] = ',';
+    ++l;
+    return l;
+}
+
+/* netstring_write_string OUT STRING
+ * Write the NUL-terminated STRING to OUT as a netstring, returning the number
+ * of bytes used. If OUT is NULL, return the number of bytes required. */
+size_t netstring_write_string(char *out, const char *str) {
+    return netstring_write(out, str, strlen(str));
+}
+
+/* netstring_write_string OUT I
+ * Write I to OUT as a decimal integer formatted as a netstring, returning the
+ * number of bytes used. If OUT is NULL, return the number of bytes required. */
+size_t netstring_write_int(char *out, const int i) {
+    char str[32];
+    sprintf(str, "%d", i);
+    return netstring_write_string(out, str);
+}