C++ LocalPointer::isNull方法代码示例

U_CAPI int U_EXPORT2
writePackageDatFile(const char *outFilename, const char *outComment, const char *sourcePath, const char *addList, Package *pkg, char outType) {
    LocalPointer<Package> ownedPkg;
    LocalPointer<Package> addListPkg;

    if (pkg == NULL) {
        ownedPkg.adoptInstead(new Package);
        if(ownedPkg.isNull()) {
            fprintf(stderr, "icupkg: not enough memory\n");
            return U_MEMORY_ALLOCATION_ERROR;
        }
        pkg = ownedPkg.getAlias();

        addListPkg.adoptInstead(readList(sourcePath, addList, TRUE, NULL));
        if(addListPkg.isValid()) {
            pkg->addItems(*addListPkg);
        } else {
            return U_ILLEGAL_ARGUMENT_ERROR;
        }
    }

    pkg->writePackage(outFilename, outType, outComment);
    return 0;
}

//.........这里部分代码省略.........

            /* test for NULL */
            if(openFileName == NULL) {
                status = U_MEMORY_ALLOCATION_ERROR;
                goto finish;
            }

            uprv_strcpy(openFileName, inputDir);

        }
    }

    uprv_strcat(openFileName, filename);

    ucbuf = ucbuf_open(openFileName, &cp,getShowWarning(),TRUE, &status);
    if(status == U_FILE_ACCESS_ERROR) {

        fprintf(stderr, "couldn't open file %s\n", openFileName == NULL ? filename : openFileName);
        goto finish;
    }
    if (ucbuf == NULL || U_FAILURE(status)) {
        fprintf(stderr, "An error occured processing file %s. Error: %s\n",
                openFileName == NULL ? filename : openFileName, u_errorName(status));
        goto finish;
    }
    /* auto detected popular encodings? */
    if (cp!=NULL && isVerbose()) {
        printf("autodetected encoding %s\n", cp);
    }
    /* Parse the data into an SRBRoot */
    data.adoptInstead(parse(ucbuf, inputDir, outputDir, filename,
            !omitBinaryCollation, options[NO_COLLATION_RULES].doesOccur, &status));

    if (data.isNull() || U_FAILURE(status)) {
        fprintf(stderr, "couldn't parse the file %s. Error:%s\n", filename, u_errorName(status));
        goto finish;
    }
    if(options[WRITE_POOL_BUNDLE].doesOccur) {
        data->fWritePoolBundle = newPoolBundle;
        data->compactKeys(status);
        int32_t newKeysLength;
        const char *newKeys = data->getKeyBytes(&newKeysLength);
        newPoolBundle->addKeyBytes(newKeys, newKeysLength, status);
        if(U_FAILURE(status)) {
            fprintf(stderr, "bundle_compactKeys(%s) or bundle_getKeyBytes() failed: %s\n",
                    filename, u_errorName(status));
            goto finish;
        }
        /* count the number of just-added key strings */
        for(const char *newKeysLimit = newKeys + newKeysLength; newKeys < newKeysLimit; ++newKeys) {
            if(*newKeys == 0) {
                ++newPoolBundle->fKeysCount;
            }
        }
    }

    if(options[USE_POOL_BUNDLE].doesOccur) {
        data->fUsePoolBundle = &poolBundle;
    }

    /* Determine the target rb filename */
    rbname = make_res_filename(filename, outputDir, packageName, status);
    if(U_FAILURE(status)) {
        fprintf(stderr, "couldn't make the res fileName for  bundle %s. Error:%s\n",
                filename, u_errorName(status));
        goto finish;

NumberFormat*
NumberFormat::makeInstance(const Locale& desiredLocale,
                           UNumberFormatStyle style,
                           UBool mustBeDecimalFormat,
                           UErrorCode& status) {
    if (U_FAILURE(status)) return NULL;

    if (style < 0 || style >= UNUM_FORMAT_STYLE_COUNT) {
        status = U_ILLEGAL_ARGUMENT_ERROR;
        return NULL;
    }

    // Some styles are not supported. This is a result of merging
    // the @draft ICU 4.2 NumberFormat::EStyles into the long-existing UNumberFormatStyle.
    // Ticket #8503 is for reviewing/fixing/merging the two relevant implementations:
    // this one and unum_open().
    // The UNUM_PATTERN_ styles are not supported here
    // because this method does not take a pattern string.
    if (!isStyleSupported(style)) {
        status = U_UNSUPPORTED_ERROR;
        return NULL;
    }

#if U_PLATFORM_USES_ONLY_WIN32_API
    if (!mustBeDecimalFormat) {
        char buffer[8];
        int32_t count = desiredLocale.getKeywordValue("compat", buffer, sizeof(buffer), status);

        // if the locale has "@compat=host", create a host-specific NumberFormat
        if (U_SUCCESS(status) && count > 0 && uprv_strcmp(buffer, "host") == 0) {
            Win32NumberFormat *f = NULL;
            UBool curr = TRUE;

            switch (style) {
            case UNUM_DECIMAL:
                curr = FALSE;
                // fall-through

            case UNUM_CURRENCY:
            case UNUM_CURRENCY_ISO: // do not support plural formatting here
            case UNUM_CURRENCY_PLURAL:
                f = new Win32NumberFormat(desiredLocale, curr, status);

                if (U_SUCCESS(status)) {
                    return f;
                }

                delete f;
                break;
            default:
                break;
            }
        }
    }
#endif
    // Use numbering system cache hashtable
    umtx_initOnce(gNSCacheInitOnce, &nscacheInit);

    // Get cached numbering system
    LocalPointer<NumberingSystem> ownedNs;
    NumberingSystem *ns = NULL;
    if (NumberingSystem_cache != NULL) {
        // TODO: Bad hash key usage, see ticket #8504.
        int32_t hashKey = desiredLocale.hashCode();

        Mutex lock(&nscacheMutex);
        ns = (NumberingSystem *)uhash_iget(NumberingSystem_cache, hashKey);
        if (ns == NULL) {
            ns = NumberingSystem::createInstance(desiredLocale,status);
            uhash_iput(NumberingSystem_cache, hashKey, (void*)ns, &status);
        }
    } else {
        ownedNs.adoptInstead(NumberingSystem::createInstance(desiredLocale,status));
        ns = ownedNs.getAlias();
    }

    // check results of getting a numbering system
    if (U_FAILURE(status)) {
        return NULL;
    }

    if (mustBeDecimalFormat && ns->isAlgorithmic()) {
        status = U_UNSUPPORTED_ERROR;
        return NULL;
    }

    LocalPointer<DecimalFormatSymbols> symbolsToAdopt;
    UnicodeString pattern;
    LocalUResourceBundlePointer ownedResource(ures_open(NULL, desiredLocale.getName(), &status));
    if (U_FAILURE(status)) {
        // We don't appear to have resource data available -- use the last-resort data
        status = U_USING_FALLBACK_WARNING;
        // When the data is unavailable, and locale isn't passed in, last resort data is used.
        symbolsToAdopt.adoptInstead(new DecimalFormatSymbols(status));
        if (symbolsToAdopt.isNull()) {
            status = U_MEMORY_ALLOCATION_ERROR;
            return NULL;
        }

        // Creates a DecimalFormat instance with the last resort number patterns.
//.........这里部分代码省略.........

int32_t ULISentenceBreakIterator::next() {
  int32_t n = fDelegate->next();
  if(n == UBRK_DONE || // at end  or
     fBackwardsTrie.isNull()) { // .. no backwards table loaded == no exceptions
    return n;
  }
  // OK, do we need to break here?
  UErrorCode status = U_ZERO_ERROR;
  // refresh text
  fText.adoptInstead(fDelegate->getUText(fText.orphan(), status));
  //if(debug2) u_printf("str, native len=%d\n", utext_nativeLength(fText.getAlias()));
  do { // outer loop runs once per underlying break (from fDelegate).
    // loops while 'n' points to an exception.
    utext_setNativeIndex(fText.getAlias(), n); // from n..
    fBackwardsTrie->reset();
    UChar32 uch;
    //if(debug2) u_printf(" [email protected] %d\n", n);
    // Assume a space is following the '.'  (so we handle the case:  "Mr. /Brown")
    if((uch=utext_previous32(fText.getAlias()))==(UChar32)0x0020) {  // TODO: skip a class of chars here??
      // TODO only do this the 1st time?
      //if(debug2) u_printf("skipping prev: |%C| \n", (UChar)uch);
    } else {
      //if(debug2) u_printf("not skipping prev: |%C| \n", (UChar)uch);
      uch = utext_next32(fText.getAlias());
      //if(debug2) u_printf(" -> : |%C| \n", (UChar)uch);
    }
    UStringTrieResult r = USTRINGTRIE_INTERMEDIATE_VALUE;

    int32_t bestPosn = -1;
    int32_t bestValue = -1;

    while((uch=utext_previous32(fText.getAlias()))!=U_SENTINEL  &&   // more to consume backwards and..
          USTRINGTRIE_HAS_NEXT(r=fBackwardsTrie->nextForCodePoint(uch))) {// more in the trie
      if(USTRINGTRIE_HAS_VALUE(r)) { // remember the best match so far
        bestPosn = utext_getNativeIndex(fText.getAlias());
        bestValue = fBackwardsTrie->getValue();
      }
      //if(debug2) u_printf("rev< /%C/ cont?%d @%d\n", (UChar)uch, r, utext_getNativeIndex(fText.getAlias()));
    }

    if(USTRINGTRIE_MATCHES(r)) { // exact match?
      //if(debug2) u_printf("rev<?/%C/?end of seq.. r=%d, bestPosn=%d, bestValue=%d\n", (UChar)uch, r, bestPosn, bestValue);
      bestValue = fBackwardsTrie->getValue();
      bestPosn = utext_getNativeIndex(fText.getAlias());
      //if(debug2) u_printf("rev<+/%C/+end of seq.. r=%d, bestPosn=%d, bestValue=%d\n", (UChar)uch, r, bestPosn, bestValue);
    }

    if(bestPosn>=0) {
      //if(debug2) u_printf("rev< /%C/ end of seq.. r=%d, bestPosn=%d, bestValue=%d\n", (UChar)uch, r, bestPosn, bestValue);

      //if(USTRINGTRIE_MATCHES(r)) {  // matched - so, now what?
      //int32_t bestValue = fBackwardsTrie->getValue();
      ////if(debug2) u_printf("rev< /%C/ matched, skip..%d  bestValue=%d\n", (UChar)uch, r, bestValue);

      if(bestValue == kMATCH) { // exact match!
        //if(debug2) u_printf(" exact backward match\n");
        n = fDelegate->next(); // skip this one. Find the next lowerlevel break.
        if(n==UBRK_DONE) return n;
        continue; // See if the next is another exception.
      } else if(bestValue == kPARTIAL
                && fForwardsPartialTrie.isValid()) { // make sure there's a forward trie
        //if(debug2) u_printf(" partial backward match\n");
        // We matched the "Ph." in "Ph.D." - now we need to run everything through the forwards trie
        // to see if it matches something going forward.
        fForwardsPartialTrie->reset();
        UStringTrieResult rfwd = USTRINGTRIE_INTERMEDIATE_VALUE;
        utext_setNativeIndex(fText.getAlias(), bestPosn); // hope that's close ..
        //if(debug2) u_printf("Retrying at %d\n", bestPosn);
        while((uch=utext_next32(fText.getAlias()))!=U_SENTINEL &&
              USTRINGTRIE_HAS_NEXT(rfwd=fForwardsPartialTrie->nextForCodePoint(uch))) {
          //if(debug2) u_printf("fwd> /%C/ cont?%d @%d\n", (UChar)uch, rfwd, utext_getNativeIndex(fText.getAlias()));
        }
        if(USTRINGTRIE_MATCHES(rfwd)) {
          //if(debug2) u_printf("fwd> /%C/ == forward match!\n", (UChar)uch);
          // only full matches here, nothing to check
          // skip the next:
          n = fDelegate->next();
          if(n==UBRK_DONE) return n;
          continue;
        } else {
          //if(debug2) u_printf("fwd> /%C/ no match.\n", (UChar)uch);
          // no match (no exception) -return the 'underlying' break
          return n;
        }
      } else {
        return n; // internal error and/or no forwards trie
      }
    } else {
      //if(debug2) u_printf("rev< /%C/ .. no match..%d\n", (UChar)uch, r);  // no best match
      return n; // No match - so exit. Not an exception.
    }
  } while(n != UBRK_DONE);
  return n;
}