curl/docs/examples/sampleconv.c

95 строки
2.6 KiB
C

/*****************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
*/
/*
This is a simple example showing how a program on a non-ASCII platform
would invoke callbacks to do its own codeset conversions instead of
using the built-in iconv functions in libcurl.
The IBM-1047 EBCDIC codeset is used for this example but the code
would be similar for other non-ASCII codesets.
Three callback functions are created below:
my_conv_from_ascii_to_ebcdic,
my_conv_from_ebcdic_to_ascii, and
my_conv_from_utf8_to_ebcdic
The "platform_xxx" calls represent platform-specific conversion routines.
*/
#include <stdio.h>
#include <curl/curl.h>
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);
}
}
CURLcode my_conv_from_ebcdic_to_ascii(char *buffer, size_t length)
{
char *tempptrin, *tempptrout;
size_t bytes = length;
int rc;
tempptrin = tempptrout = buffer;
rc = platform_e2a(&tempptrin, &bytes, &tempptrout, &bytes);
if (rc == PLATFORM_CONV_OK) {
return(CURLE_OK);
} else {
return(CURLE_CONV_FAILED);
}
}
CURLcode my_conv_from_utf8_to_ebcdic(char *buffer, size_t length)
{
char *tempptrin, *tempptrout;
size_t bytes = length;
int rc;
tempptrin = tempptrout = buffer;
rc = platform_u2e(&tempptrin, &bytes, &tempptrout, &bytes);
if (rc == PLATFORM_CONV_OK) {
return(CURLE_OK);
} else {
return(CURLE_CONV_FAILED);
}
}
int main(void)
{
CURL *curl;
CURLcode res;
curl = curl_easy_init();
if(curl) {
curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
/* use platform-specific functions for codeset conversions */
curl_easy_setopt(curl, CURLOPT_CONV_FROM_NETWORK_FUNCTION,
my_conv_from_ascii_to_ebcdic);
curl_easy_setopt(curl, CURLOPT_CONV_TO_NETWORK_FUNCTION,
my_conv_from_ebcdic_to_ascii);
curl_easy_setopt(curl, CURLOPT_CONV_FROM_UTF8_FUNCTION,
my_conv_from_utf8_to_ebcdic);
res = curl_easy_perform(curl);
/* always cleanup */
curl_easy_cleanup(curl);
}
return 0;
}