CMakeLua/Utilities/cmcurl-7.19.0/docs/examples/sampleconv.c

   1 /*****************************************************************************
   2  *                                  _   _ ____  _
   3  *  Project                     ___| | | |  _ \| |
   4  *                             / __| | | | |_) | |
   5  *                            | (__| |_| |  _ <| |___
   6  *                             \___|\___/|_| \_\_____|
   7  *
   8  * $Id: sampleconv.c,v 1.1.1.1 2008-09-23 16:32:05 hoffman Exp $
   9  */
  10 /*
  11    This is a simple example showing how a program on a non-ASCII platform
  12    would invoke callbacks to do its own codeset conversions instead of
  13    using the built-in iconv functions in libcurl.
  14
  15    The IBM-1047 EBCDIC codeset is used for this example but the code
  16    would be similar for other non-ASCII codesets.
  17
  18    Three callback functions are created below:
  19         my_conv_from_ascii_to_ebcdic,
  20         my_conv_from_ebcdic_to_ascii, and
  21         my_conv_from_utf8_to_ebcdic
  22
  23    The "platform_xxx" calls represent platform-specific conversion routines.
  24
  25  */
  26
  27 #include <stdio.h>
  28 #include <curl/curl.h>
  29
  30 CURLcode my_conv_from_ascii_to_ebcdic(char *buffer, size_t length)
  31 {
  32     char *tempptrin, *tempptrout;
  33     size_t bytes = length;
  34     int rc;
  35     tempptrin = tempptrout = buffer;
  36     rc = platform_a2e(&tempptrin, &bytes, &tempptrout, &bytes);
  37     if (rc == PLATFORM_CONV_OK) {
  38       return(CURLE_OK);
  39     } else {
  40       return(CURLE_CONV_FAILED);
  41     }
  42 }
  43
  44 CURLcode my_conv_from_ebcdic_to_ascii(char *buffer, size_t length)
  45 {
  46     char *tempptrin, *tempptrout;
  47     size_t bytes = length;
  48     int rc;
  49     tempptrin = tempptrout = buffer;
  50     rc = platform_e2a(&tempptrin, &bytes, &tempptrout, &bytes);
  51     if (rc == PLATFORM_CONV_OK) {
  52       return(CURLE_OK);
  53     } else {
  54       return(CURLE_CONV_FAILED);
  55     }
  56 }
  57
  58 CURLcode my_conv_from_utf8_to_ebcdic(char *buffer, size_t length)
  59 {
  60     char *tempptrin, *tempptrout;
  61     size_t bytes = length;
  62     int rc;
  63     tempptrin = tempptrout = buffer;
  64     rc = platform_u2e(&tempptrin, &bytes, &tempptrout, &bytes);
  65     if (rc == PLATFORM_CONV_OK) {
  66       return(CURLE_OK);
  67     } else {
  68       return(CURLE_CONV_FAILED);
  69     }
  70 }
  71
  72 int main(void)
  73 {
  74   CURL *curl;
  75   CURLcode res;
  76
  77   curl = curl_easy_init();
  78   if(curl) {
  79     curl_easy_setopt(curl, CURLOPT_URL, "curl.haxx.se");
  80
  81     /* use platform-specific functions for codeset conversions */
  82     curl_easy_setopt(curl, CURLOPT_CONV_FROM_NETWORK_FUNCTION,
  83                      my_conv_from_ascii_to_ebcdic);
  84     curl_easy_setopt(curl, CURLOPT_CONV_TO_NETWORK_FUNCTION,
  85                      my_conv_from_ebcdic_to_ascii);
  86     curl_easy_setopt(curl, CURLOPT_CONV_FROM_UTF8_FUNCTION,
  87                      my_conv_from_utf8_to_ebcdic);
  88
  89     res = curl_easy_perform(curl);
  90
  91     /* always cleanup */
  92     curl_easy_cleanup(curl);
  93   }
  94   return 0;
  95 }