Urlencode and Urldecode

Functions
LWS_VISIBLE LWS_EXTERN const char *	lws_urlencode (char *escaped, const char *string, int len)
LWS_VISIBLE LWS_EXTERN int	lws_urldecode (char *string, const char *escaped, int len)

Detailed Description

HTML chunked Substitution

APIs for receiving chunks of text, replacing a set of variable names via a callback, and then prepending and appending HTML chunked encoding headers.

Function Documentation

lws_urldecode()

LWS_VISIBLE LWS_EXTERN int lws_urldecode	(	char *	string,
		const char *	escaped,
		int	len
	)

#include <lib/libwebsockets.h>

lws_urldecode() - like strncpy but with urldecoding

Parameters

string	output buffer
escaped	input buffer ('\0' terminated)
len	output buffer max length

This is only useful for '\0' terminated strings

Since urldecoding only shrinks the output string, it is possible to do it in-place, ie, string == escaped

Returns 0 if completed OK or nonzero for urldecode violation (non-hex chars where hex required, etc)

lws_urlencode()

LWS_VISIBLE LWS_EXTERN const char* lws_urlencode	(	char *	escaped,
		const char *	string,
		int	len
	)

#include <lib/libwebsockets.h>

lws_urlencode() - like strncpy but with urlencoding

Parameters

escaped	output buffer
string	input buffer ('/0' terminated)
len	output buffer max length

Because urlencoding expands the output string, it's not possible to do it in-place, ie, with escaped == string