/*************************************************************************** * _ _ ____ _ * Project ___| | | | _ \| | * / __| | | | |_) | | * | (__| |_| | _ <| |___ * \___|\___/|_| \_\_____| * * Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al. * * This software is licensed as described in the file COPYING, which * you should have received as part of this distribution. The terms * are also available at https://curl.se/docs/copyright.html. * * You may opt to use, copy, modify, merge, publish, distribute and/or sell * copies of the Software, and permit persons to whom the Software is * furnished to do so, under the terms of the COPYING file. * * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY * KIND, either express or implied. * ***************************************************************************/ /* <DESC> * 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. * </DESC> */ /* 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> 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; } } static 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; } } static 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; curl = curl_easy_init(); if(curl) { curl_easy_setopt(curl, CURLOPT_URL, "https://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); curl_easy_perform(curl); /* always cleanup */ curl_easy_cleanup(curl); } return 0; }