curl_easy_unescape - Online Linux Manual PageSection : 3
Updated : December 06, 2021
Source : libcurl 7.82.0
Note : libcurl Manual
NAMEcurl_easy_unescape - URL decodes the given string
SYNOPSIS#include <curl/curl.h>
char *curl_easy_unescape(CURL *curl, const char *url,
int inlength, int *outlength);
DESCRIPTIONThis function converts the given URL encoded input string to a "plain string" and returns that in an allocated memory area. All input characters that are URL encoded (%XX where XX is a two-digit hexadecimal number) are converted to their binary versions. If the length argument is set to 0 (zero), curl_easy_unescape(3) will use strlen() on the input url string to find out the size. If outlength is non-NULL, the function will write the length of the returned string in the integer it points to. This allows an escaped string containing %00 to still get used properly after unescaping. Since this is a pointer to an int type, it can only return a value up to INT_MAX so no longer string can be unescaped if the string length is returned in this parameter. You must curl_free(3) the returned string when you are done with it.
EXAMPLECURL *curl = curl_easy_init();
if(curl) {
int decodelen;
char *decoded = curl_easy_unescape(curl, "%63%75%72%6c", 12, &decodelen);
if(decoded) {
/* do not assume printf() works on the decoded data! */
printf("Decoded: ");
/* ... */
curl_free(decoded);
}
curl_easy_cleanup(curl);
}
AVAILABILITYAdded in 7.15.4 and replaces the old curl_unescape(3) function.
RETURN VALUEA pointer to a null-terminated string or NULL if it failed.
SEE ALSOcurl_easy_escape(3), curl_free (3),"RFC3986 0
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