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23 .TH curl_easy_unescape 3 "October 04, 2016" "libcurl 7.59.0" "libcurl Manual"
26 curl_easy_unescape - URL decodes the given string
28 .B #include <curl/curl.h>
30 .BI "char *curl_easy_unescape( CURL *" curl ", const char *" url
31 .BI ", int "inlength ", int *" outlength " );"
34 This function converts the given URL encoded input string to a "plain string"
35 and returns that in an allocated memory area. All input characters that are
36 URL encoded (%XX where XX is a two-digit hexadecimal number) are converted to
37 their binary versions.
39 If the \fBlength\fP argument is set to 0 (zero), \fIcurl_easy_unescape(3)\fP
40 will use strlen() on the input \fIurl\fP string to find out the size.
42 If \fBoutlength\fP is non-NULL, the function will write the length of the
43 returned string in the integer it points to. This allows an escaped string
44 containing %00 to still get used properly after unescaping. Since this is a
45 pointer to an \fIint\fP type, it can only return a value up to INT_MAX so no
46 longer string can be unescaped if the string length is returned in this
49 You must \fIcurl_free(3)\fP the returned string when you're done with it.
51 Added in 7.15.4 and replaces the old \fIcurl_unescape(3)\fP function.
53 A pointer to a zero terminated string or NULL if it failed.
55 .BR curl_easy_escape "(3), " curl_free "(3)," RFC 3986