1/*************************************************************************** 2 * _ _ ____ _ 3 * Project ___| | | | _ \| | 4 * / __| | | | |_) | | 5 * | (__| |_| | _ <| |___ 6 * \___|\___/|_| \_\_____| 7 * 8 * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al. 9 * 10 * This software is licensed as described in the file COPYING, which 11 * you should have received as part of this distribution. The terms 12 * are also available at http://curl.haxx.se/docs/copyright.html. 13 * 14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell 15 * copies of the Software, and permit persons to whom the Software is 16 * furnished to do so, under the terms of the COPYING file. 17 * 18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY 19 * KIND, either express or implied. 20 * 21 ***************************************************************************/ 22/* 23 This is a simple example showing how a program on a non-ASCII platform 24 would invoke callbacks to do its own codeset conversions instead of 25 using the built-in iconv functions in libcurl. 26 27 The IBM-1047 EBCDIC codeset is used for this example but the code 28 would be similar for other non-ASCII codesets. 29 30 Three callback functions are created below: 31 my_conv_from_ascii_to_ebcdic, 32 my_conv_from_ebcdic_to_ascii, and 33 my_conv_from_utf8_to_ebcdic 34 35 The "platform_xxx" calls represent platform-specific conversion routines. 36 37 */ 38 39#include <stdio.h> 40#include <curl/curl.h> 41 42CURLcode my_conv_from_ascii_to_ebcdic(char *buffer, size_t length) 43{ 44 char *tempptrin, *tempptrout; 45 size_t bytes = length; 46 int rc; 47 tempptrin = tempptrout = buffer; 48 rc = platform_a2e(&tempptrin, &bytes, &tempptrout, &bytes); 49 if (rc == PLATFORM_CONV_OK) { 50 return(CURLE_OK); 51 } else { 52 return(CURLE_CONV_FAILED); 53 } 54} 55 56CURLcode my_conv_from_ebcdic_to_ascii(char *buffer, size_t length) 57{ 58 char *tempptrin, *tempptrout; 59 size_t bytes = length; 60 int rc; 61 tempptrin = tempptrout = buffer; 62 rc = platform_e2a(&tempptrin, &bytes, &tempptrout, &bytes); 63 if (rc == PLATFORM_CONV_OK) { 64 return(CURLE_OK); 65 } else { 66 return(CURLE_CONV_FAILED); 67 } 68} 69 70CURLcode my_conv_from_utf8_to_ebcdic(char *buffer, size_t length) 71{ 72 char *tempptrin, *tempptrout; 73 size_t bytes = length; 74 int rc; 75 tempptrin = tempptrout = buffer; 76 rc = platform_u2e(&tempptrin, &bytes, &tempptrout, &bytes); 77 if (rc == PLATFORM_CONV_OK) { 78 return(CURLE_OK); 79 } else { 80 return(CURLE_CONV_FAILED); 81 } 82} 83 84int main(void) 85{ 86 CURL *curl; 87 CURLcode res; 88 89 curl = curl_easy_init(); 90 if(curl) { 91 curl_easy_setopt(curl, CURLOPT_URL, "http://example.com"); 92 93 /* use platform-specific functions for codeset conversions */ 94 curl_easy_setopt(curl, CURLOPT_CONV_FROM_NETWORK_FUNCTION, 95 my_conv_from_ascii_to_ebcdic); 96 curl_easy_setopt(curl, CURLOPT_CONV_TO_NETWORK_FUNCTION, 97 my_conv_from_ebcdic_to_ascii); 98 curl_easy_setopt(curl, CURLOPT_CONV_FROM_UTF8_FUNCTION, 99 my_conv_from_utf8_to_ebcdic); 100 101 res = curl_easy_perform(curl); 102 103 /* always cleanup */ 104 curl_easy_cleanup(curl); 105 } 106 return 0; 107} 108