Exemplos de ucnv_getFromUCallBack em C++ (Cpp)

Exemplo n.º 1

Arquivo: libcore_icu_NativeConverter.cpp Projeto: AOSP-JF/platform_libcore

static void NativeConverter_setCallbackEncode(JNIEnv* env, jclass, jlong address,
        jint onMalformedInput, jint onUnmappableInput, jbyteArray javaReplacement) {
    UConverter* cnv = toUConverter(address);
    if (cnv == NULL) {
        maybeThrowIcuException(env, "toUConverter", U_ILLEGAL_ARGUMENT_ERROR);
        return;
    }

    UConverterFromUCallback oldCallback = NULL;
    const void* oldCallbackContext = NULL;
    ucnv_getFromUCallBack(cnv, &oldCallback, const_cast<const void**>(&oldCallbackContext));

    EncoderCallbackContext* callbackContext = const_cast<EncoderCallbackContext*>(
            reinterpret_cast<const EncoderCallbackContext*>(oldCallbackContext));
    if (callbackContext == NULL) {
        callbackContext = new EncoderCallbackContext;
    }

    callbackContext->onMalformedInput = getFromUCallback(onMalformedInput);
    callbackContext->onUnmappableInput = getFromUCallback(onUnmappableInput);

    ScopedByteArrayRO replacementBytes(env, javaReplacement);
    if (replacementBytes.get() == NULL) {
        maybeThrowIcuException(env, "replacementBytes", U_ILLEGAL_ARGUMENT_ERROR);
        return;
    }
    memcpy(callbackContext->replacementBytes, replacementBytes.get(), replacementBytes.size());
    callbackContext->replacementByteCount = replacementBytes.size();

    UErrorCode errorCode = U_ZERO_ERROR;
    ucnv_setFromUCallBack(cnv, CHARSET_ENCODER_CALLBACK, callbackContext, NULL, NULL, &errorCode);
    maybeThrowIcuException(env, "ucnv_setFromUCallBack", errorCode);
}

Exemplo n.º 2

Arquivo: convsamp.cpp Projeto: ACSOP/android_external_icu4c

UBool convsample_21_didSubstitute(const char *source)
{
  UChar uchars[100];
  char bytes[100];
  UConverter *conv = NULL, *cloneCnv = NULL;
  UErrorCode status = U_ZERO_ERROR;
  uint32_t len, len2;
  int32_t  cloneLen;
  UBool  flagVal = FALSE;
  UConverterFromUCallback junkCB;
  
  FromUFLAGContext *flagCtx = NULL, 
                   *cloneFlagCtx = NULL;

  debugCBContext   *debugCtx1 = NULL,
                   *debugCtx2 = NULL,
                   *cloneDebugCtx = NULL;

  printf("\n\n==============================================\n"
         "Sample 21: C: Test for substitution w/ callbacks & clones \n");

  /* print out the original source */
  printBytes("src", source);
  printf("\n");

  /* First, convert from UTF8 to unicode */
  conv = ucnv_open("utf-8", &status);
  U_ASSERT(status);

  len = ucnv_toUChars(conv, uchars, 100, source, strlen(source), &status);
  U_ASSERT(status);
 
  printUChars("uch", uchars, len);
  printf("\n");

  /* Now, close the converter */
  ucnv_close(conv);

  /* Now, convert to windows-1252 */
  conv = ucnv_open("windows-1252", &status);
  U_ASSERT(status);

  /* Converter starts out with the SUBSTITUTE callback set. */

  /* initialize our callback */
  /* from the 'bottom' innermost, out
   *   CNV ->  debugCtx1[debug]  ->  flagCtx[flag] -> debugCtx2[debug]  */

#if DEBUG_TMI
  printf("flagCB_fromU = %p\n", &flagCB_fromU);
  printf("debugCB_fromU = %p\n", &debugCB_fromU);
#endif

  debugCtx1 = debugCB_openContext();
   flagCtx  = flagCB_fromU_openContext();
  debugCtx2 = debugCB_openContext();

  debugCtx1->subCallback =  flagCB_fromU;  /* debug1 -> flag */
  debugCtx1->subContext  =  flagCtx;

  flagCtx->subCallback   =  debugCB_fromU; /*  flag -> debug2 */
  flagCtx->subContext    =  debugCtx2;

  debugCtx2->subCallback =  UCNV_FROM_U_CALLBACK_SUBSTITUTE;
  debugCtx2->subContext  = NULL;

  /* Set our special callback */

  ucnv_setFromUCallBack(conv,
                        debugCB_fromU,
                        debugCtx1,
                        &(debugCtx2->subCallback),
                        &(debugCtx2->subContext),
                        &status);

  U_ASSERT(status);

#if DEBUG_TMI
  printf("Callback chain now: Converter %p -> debug1:%p-> (%p:%p)==flag:%p -> debug2:%p -> cb %p\n",
         conv, debugCtx1, debugCtx1->subCallback,
         debugCtx1->subContext, flagCtx, debugCtx2, debugCtx2->subCallback);
#endif

  cloneLen = 1; /* but passing in null so it will clone */
  cloneCnv = ucnv_safeClone(conv,  NULL,  &cloneLen, &status);

  U_ASSERT(status);

#if DEBUG_TMI
  printf("Cloned converter from %p -> %p.  Closing %p.\n", conv, cloneCnv, conv);
#endif
  
  ucnv_close(conv);

#if DEBUG_TMI
  printf("%p closed.\n", conv);
#endif 

  U_ASSERT(status);
  /* Now, we have to extract the context */
  cloneDebugCtx = NULL;
  cloneFlagCtx  = NULL;

  ucnv_getFromUCallBack(cloneCnv, &junkCB, (const void **)&cloneDebugCtx);
  if(cloneDebugCtx != NULL) {
      cloneFlagCtx = (FromUFLAGContext*) cloneDebugCtx -> subContext;
  }

  printf("Cloned converter chain: %p -> %p[debug1] -> %p[flag] -> %p[debug2] -> substitute\n",
         cloneCnv, cloneDebugCtx, cloneFlagCtx, cloneFlagCtx?cloneFlagCtx->subContext:NULL );

  len2 = ucnv_fromUChars(cloneCnv, bytes, 100, uchars, len, &status);
  U_ASSERT(status);

  if(cloneFlagCtx != NULL) {
      flagVal = cloneFlagCtx->flag;  /* it's about to go away when we close the cnv */
  } else {
      printf("** Warning, couldn't get the subcallback \n");
  }

  ucnv_close(cloneCnv);

  /* print out the original source */
  printBytes("bytes", bytes, len2);

  return flagVal; /* true if callback was called */
}