KHTTP_URLENCODE(3) Library Functions Manual KHTTP_URLENCODE(3)

khttp_urlencodeURL encoding for kcgi

library “libkcgi”

#include <sys/types.h>
#include <stdarg.h>
#include <stdint.h>
#include <kcgi.h>

char *
khttp_urlencode(const char *cp);

Percent-encodes a string cp, usually for embedding in a URL, and returns the allocated result. If passed a NULL, returns an allocated empty string.

The encoding uses capital-letter hex encoding.

Returns a newly-allocated string that must be freed with free(3) or NULL if allocation fails.

The deprecated form of this function, kutil_urlencode(), should no longer be used.

The following table shows strings pre- and post-encoding.

foo bar foo+bar
foo+bar foo%2Bbar

Written by Kristaps Dzonsons <>.

December 2, 2023 OpenBSD 7.4