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59 lines
1.9 KiB
Groff
59 lines
1.9 KiB
Groff
.\" generated by cd2nroff 0.1 from curl_easy_unescape.md
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.TH curl_easy_unescape 3 "2024-06-01" libcurl
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.SH NAME
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curl_easy_unescape \- URL decodes the given string
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.SH SYNOPSIS
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.nf
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#include <curl/curl.h>
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char *curl_easy_unescape(CURL *curl, const char *input,
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int inlength, int *outlength);
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.fi
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.SH DESCRIPTION
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This function converts the URL encoded string \fBinput\fP to a "plain string"
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and returns that in an allocated memory area. All input characters that are URL
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encoded (%XX where XX is a two\-digit hexadecimal number) are converted to their
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binary versions.
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If the \fBlength\fP argument is set to 0 (zero), \fIcurl_easy_unescape(3)\fP
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uses strlen() on \fBinput\fP to find out the size.
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If \fBoutlength\fP is non\-NULL, the function writes the length of the returned
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string in the integer it points to. This allows proper handling even for
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strings containing %00. Since this is a pointer to an \fIint\fP type, it can
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only return a value up to \fIINT_MAX\fP so no longer string can be returned in
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this parameter.
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Since 7.82.0, the \fBcurl\fP parameter is ignored. Prior to that there was
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per\-handle character conversion support for some old operating systems such as
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TPF, but it was otherwise ignored.
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You must \fIcurl_free(3)\fP the returned string when you are done with it.
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.SH PROTOCOLS
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All
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.SH EXAMPLE
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.nf
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int main(void)
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{
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CURL *curl = curl_easy_init();
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if(curl) {
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int decodelen;
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char *decoded = curl_easy_unescape(curl, "%63%75%72%6c", 12, &decodelen);
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if(decoded) {
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/* do not assume printf() works on the decoded data! */
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printf("Decoded: ");
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/* ... */
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curl_free(decoded);
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}
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curl_easy_cleanup(curl);
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}
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}
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.fi
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.SH AVAILABILITY
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Added in 7.15.4 and replaces the old \fIcurl_unescape(3)\fP function.
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.SH RETURN VALUE
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A pointer to a null\-terminated string or NULL if it failed.
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.SH SEE ALSO
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.BR curl_easy_escape (3),
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.BR curl_free (3)
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