icuSources/common/cstr.cpp

   1 // © 2016 and later: Unicode, Inc. and others.
   2 // License & terms of use: http://www.unicode.org/copyright.html
   3 /*
   4 *******************************************************************************
   5 *   Copyright (C) 2015-2016, International Business Machines
   6 *   Corporation and others.  All Rights Reserved.
   7 *******************************************************************************
   8 *   file name:  charstr.cpp
   9 */
  10 #include "unicode/utypes.h"
  11 #include "unicode/putil.h"
  12 #include "unicode/unistr.h"
  13
  14 #include "cstr.h"
  15
  16 #include "charstr.h"
  17 #include "uinvchar.h"
  18
  19 U_NAMESPACE_BEGIN
  20
  21 CStr::CStr(const UnicodeString &in) {
  22     UErrorCode status = U_ZERO_ERROR;
  23 #if !UCONFIG_NO_CONVERSION || U_CHARSET_IS_UTF8
  24     int32_t length = in.extract(0, in.length(), static_cast<char *>(NULL), static_cast<uint32_t>(0));
  25     int32_t resultCapacity = 0;
  26     char *buf = s.getAppendBuffer(length, length, resultCapacity, status);
  27     if (U_SUCCESS(status)) {
  28         in.extract(0, in.length(), buf, resultCapacity);
  29         s.append(buf, length, status);
  30     }
  31 #else
  32     // No conversion available. Convert any invariant characters; substitute '?' for the rest.
  33     // Note: can't just call u_UCharsToChars() or CharString.appendInvariantChars() on the
  34     //       whole string because they require that the entire input be invariant.
  35     char buf[2];
  36     for (int i=0; i<in.length(); i = in.moveIndex32(i, 1)) {
  37         if (uprv_isInvariantUString(in.getBuffer()+i, 1)) {
  38             u_UCharsToChars(in.getBuffer()+i, buf, 1);
  39         } else {
  40             buf[0] = '?';
  41         }
  42         s.append(buf, 1, status);
  43     }
  44 #endif
  45 }
  46
  47 CStr::~CStr() {
  48 }
  49
  50 const char * CStr::operator ()() const {
  51     return s.data();
  52 }
  53
  54 U_NAMESPACE_END