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CURLOPT_CONV_FROM_NETWORK_FUNCTION(3libcuCURLOPT_CONV_FROM_NETWORK_FUNCTION(3)
NAME
CURLOPT_CONV_FROM_NETWORK_FUNCTION - convert data from network to host
encoding
SYNOPSIS
#include <curl/curl.h>
CURLcode conv_callback(char *ptr, size_t length);
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_CONV_FROM_NETWORK_FUNCTION,
conv_callback);
DESCRIPTION
Pass a pointer to your callback function, which should match the proto-
type shown above.
Applies to non-ASCII platforms. curl_version_info(3) returns the
CURL_VERSION_CONV feature bit set if this option is provided.
The data to be converted is in a buffer pointed to by the ptr parame-
ter. The amount of data to convert is indicated by the length parame-
ter. The converted data overlays the input data in the buffer pointed
to by the ptr parameter. CURLE_OK must be returned upon successful con-
version. A CURLcode return value defined by curl.h, such as
CURLE_CONV_FAILED, should be returned if an error was encountered.
CURLOPT_CONV_FROM_NETWORK_FUNCTION(3) converts to host encoding from
the network encoding. It is used when commands or ASCII data are
received over the network.
If you set a callback pointer to NULL, or do not set it at all, the
built-in libcurl iconv functions are used. If HAVE_ICONV was not
defined when libcurl was built, and no callback has been established,
the conversion returns the CURLE_CONV_REQD error code.
If HAVE_ICONV is defined, CURL_ICONV_CODESET_OF_HOST must also be
defined. For example:
#define CURL_ICONV_CODESET_OF_HOST "IBM-1047"
The iconv code in libcurl defaults the network and UTF8 codeset names
as follows:
#define CURL_ICONV_CODESET_OF_NETWORK "ISO8859-1"
#define CURL_ICONV_CODESET_FOR_UTF8 "UTF-8"
You need to override these definitions if they are different on your
system.
DEFAULT
NULL
PROTOCOLS
FTP, SMTP, IMAP, POP3
EXAMPLE
static CURLcode my_conv_from_ascii_to_ebcdic(char *buffer, size_t length)
{
char *tempptrin, *tempptrout;
size_t bytes = length;
int rc;
tempptrin = tempptrout = buffer;
rc = platform_a2e(&tempptrin, &bytes, &tempptrout, &bytes);
if(rc == PLATFORM_CONV_OK) {
return CURLE_OK;
}
else {
return CURLE_CONV_FAILED;
}
}
/* use platform-specific functions for codeset conversions */
curl_easy_setopt(curl, CURLOPT_CONV_FROM_NETWORK_FUNCTION,
my_conv_from_ascii_to_ebcdic);
AVAILABILITY
Not available and deprecated since 7.82.0.
Available only if CURL_DOES_CONVERSIONS was defined when libcurl was
built.
RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION
if not.
SEE ALSO
CURLOPT_CONV_FROM_UTF8_FUNCTION(3), CURLOPT_CONV_TO_NETWORK_FUNCTION(3)
ibcurl 8.4.0 September 2CURLOPT_CONV_FROM_NETWORK_FUNCTION(3)
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