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curl_unescape(3)

Library Functions Manual

curl_unescape(3)

NAME

curl_unescape - URL decode a string

SYNOPSIS

#include <curl/curl.h>

char *curl_unescape(const char *input, int length);

DESCRIPTION

Deprecated. Use curl_easy_unescape(3) instead.

This function converts the URL encoded string input to a "plain string" and return that as a new allocated string. All input characters that are URL encoded (%XX where XX is a two-digit hexadecimal number) are converted to their plain text versions.

If the length argument is set to 0, curl_unescape(3) calls strlen() on input to find out the size.

You must curl_free(3) the returned string when you are done with it.

PROTOCOLS

This functionality affects all supported protocols

EXAMPLE

int main(void)
{
CURL *curl = curl_easy_init();
if(curl) {
char *decoded = curl_unescape("%63%75%72%6c", 12);
if(decoded) {
/* do not assume printf() works on the decoded data */
printf("Decoded: ");
/* ... */
curl_free(decoded);
}
}
}

DEPRECATED

Since 7.15.4, curl_easy_unescape(3) should be used. This function might be removed in a future release.

AVAILABILITY

Added in curl 7.1

RETURN VALUE

A pointer to a null-terminated string or NULL if it failed.