Move core/src/ up to core/.

This CL moves the core/src/ files up to core/ and fixes up the include guards,
includes and build files.

R=tsepez@chromium.org

Review URL: https://codereview.chromium.org/1800523005 .

1 files changed, 1050 insertions, 0 deletions

diff --git a/core/fxcrt/fx_basic_wstring.cpp b/core/fxcrt/fx_basic_wstring.cpp
new file mode 100644
index 0000000000..95b761bd09
--- /dev/null
+++ b/core/fxcrt/fx_basic_wstring.cpp
@@ -0,0 +1,1050 @@
+// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include <stddef.h>
+
+#include <algorithm>
+#include <cctype>
+
+#include "core/include/fxcrt/fx_basic.h"
+#include "core/include/fxcrt/fx_ext.h"
+#include "third_party/base/numerics/safe_math.h"
+
+namespace {
+
+#ifndef NDEBUG
+bool IsValidCodePage(FX_WORD codepage) {
+  switch (codepage) {
+    case 0:
+    case 932:
+    case 936:
+    case 949:
+    case 950:
+      return true;
+
+    default:
+      return false;
+  }
+}
+#endif
+
+}  // namespace
+
+// static
+CFX_WideString::StringData* CFX_WideString::StringData::Create(int nLen) {
+  // TODO(palmer): |nLen| should really be declared as |size_t|, or
+  // at least unsigned.
+  if (nLen == 0 || nLen < 0) {
+    return NULL;
+  }
+
+  // Fixed portion of header plus a NUL wide char not in m_nAllocLength.
+  int overhead = offsetof(StringData, m_String) + sizeof(FX_WCHAR);
+  pdfium::base::CheckedNumeric<int> iSize = nLen;
+  iSize *= sizeof(FX_WCHAR);
+  iSize += overhead;
+
+  // Now round to an 8-byte boundary. We'd expect that this is the minimum
+  // granularity of any of the underlying allocators, so there may be cases
+  // where we can save a re-alloc when adding a few characters to a string
+  // by using this otherwise wasted space.
+  iSize += 7;
+  int totalSize = iSize.ValueOrDie() & ~7;
+  int usableLen = (totalSize - overhead) / sizeof(FX_WCHAR);
+  FXSYS_assert(usableLen >= nLen);
+
+  void* pData = FX_Alloc(uint8_t, totalSize);
+  return new (pData) StringData(nLen, usableLen);
+}
+CFX_WideString::~CFX_WideString() {
+  if (m_pData) {
+    m_pData->Release();
+  }
+}
+CFX_WideString::CFX_WideString(const CFX_WideString& stringSrc) {
+  if (!stringSrc.m_pData) {
+    m_pData = NULL;
+    return;
+  }
+  if (stringSrc.m_pData->m_nRefs >= 0) {
+    m_pData = stringSrc.m_pData;
+    m_pData->Retain();
+  } else {
+    m_pData = NULL;
+    *this = stringSrc;
+  }
+}
+CFX_WideString::CFX_WideString(const FX_WCHAR* lpsz, FX_STRSIZE nLen) {
+  if (nLen < 0) {
+    nLen = lpsz ? FXSYS_wcslen(lpsz) : 0;
+  }
+  if (nLen) {
+    m_pData = StringData::Create(nLen);
+    if (m_pData) {
+      FXSYS_memcpy(m_pData->m_String, lpsz, nLen * sizeof(FX_WCHAR));
+    }
+  } else {
+    m_pData = NULL;
+  }
+}
+CFX_WideString::CFX_WideString(FX_WCHAR ch) {
+  m_pData = StringData::Create(1);
+  if (m_pData) {
+    m_pData->m_String[0] = ch;
+  }
+}
+CFX_WideString::CFX_WideString(const CFX_WideStringC& str) {
+  if (str.IsEmpty()) {
+    m_pData = NULL;
+    return;
+  }
+  m_pData = StringData::Create(str.GetLength());
+  if (m_pData) {
+    FXSYS_memcpy(m_pData->m_String, str.GetPtr(),
+                 str.GetLength() * sizeof(FX_WCHAR));
+  }
+}
+CFX_WideString::CFX_WideString(const CFX_WideStringC& str1,
+                               const CFX_WideStringC& str2) {
+  m_pData = NULL;
+  int nNewLen = str1.GetLength() + str2.GetLength();
+  if (nNewLen == 0) {
+    return;
+  }
+  m_pData = StringData::Create(nNewLen);
+  if (m_pData) {
+    FXSYS_memcpy(m_pData->m_String, str1.GetPtr(),
+                 str1.GetLength() * sizeof(FX_WCHAR));
+    FXSYS_memcpy(m_pData->m_String + str1.GetLength(), str2.GetPtr(),
+                 str2.GetLength() * sizeof(FX_WCHAR));
+  }
+}
+void CFX_WideString::ReleaseBuffer(FX_STRSIZE nNewLength) {
+  if (!m_pData) {
+    return;
+  }
+  CopyBeforeWrite();
+  if (nNewLength == -1) {
+    nNewLength = m_pData ? FXSYS_wcslen(m_pData->m_String) : 0;
+  }
+  if (nNewLength == 0) {
+    Empty();
+    return;
+  }
+  FXSYS_assert(nNewLength <= m_pData->m_nAllocLength);
+  m_pData->m_nDataLength = nNewLength;
+  m_pData->m_String[nNewLength] = 0;
+}
+const CFX_WideString& CFX_WideString::operator=(const FX_WCHAR* lpsz) {
+  if (!lpsz || lpsz[0] == 0) {
+    Empty();
+  } else {
+    AssignCopy(FXSYS_wcslen(lpsz), lpsz);
+  }
+  return *this;
+}
+const CFX_WideString& CFX_WideString::operator=(
+    const CFX_WideStringC& stringSrc) {
+  if (stringSrc.IsEmpty()) {
+    Empty();
+  } else {
+    AssignCopy(stringSrc.GetLength(), stringSrc.GetPtr());
+  }
+  return *this;
+}
+const CFX_WideString& CFX_WideString::operator=(
+    const CFX_WideString& stringSrc) {
+  if (m_pData == stringSrc.m_pData) {
+    return *this;
+  }
+  if (stringSrc.IsEmpty()) {
+    Empty();
+  } else if ((m_pData && m_pData->m_nRefs < 0) ||
+             (stringSrc.m_pData && stringSrc.m_pData->m_nRefs < 0)) {
+    AssignCopy(stringSrc.m_pData->m_nDataLength, stringSrc.m_pData->m_String);
+  } else {
+    Empty();
+    m_pData = stringSrc.m_pData;
+    if (m_pData) {
+      m_pData->Retain();
+    }
+  }
+  return *this;
+}
+const CFX_WideString& CFX_WideString::operator+=(FX_WCHAR ch) {
+  ConcatInPlace(1, &ch);
+  return *this;
+}
+const CFX_WideString& CFX_WideString::operator+=(const FX_WCHAR* lpsz) {
+  if (lpsz) {
+    ConcatInPlace(FXSYS_wcslen(lpsz), lpsz);
+  }
+  return *this;
+}
+const CFX_WideString& CFX_WideString::operator+=(const CFX_WideString& str) {
+  if (!str.m_pData) {
+    return *this;
+  }
+  ConcatInPlace(str.m_pData->m_nDataLength, str.m_pData->m_String);
+  return *this;
+}
+const CFX_WideString& CFX_WideString::operator+=(const CFX_WideStringC& str) {
+  if (str.IsEmpty()) {
+    return *this;
+  }
+  ConcatInPlace(str.GetLength(), str.GetPtr());
+  return *this;
+}
+bool CFX_WideString::Equal(const wchar_t* ptr) const {
+  if (!m_pData) {
+    return !ptr || ptr[0] == L'\0';
+  }
+  if (!ptr) {
+    return m_pData->m_nDataLength == 0;
+  }
+  return wcslen(ptr) == static_cast<size_t>(m_pData->m_nDataLength) &&
+         wmemcmp(ptr, m_pData->m_String, m_pData->m_nDataLength) == 0;
+}
+bool CFX_WideString::Equal(const CFX_WideStringC& str) const {
+  if (!m_pData) {
+    return str.IsEmpty();
+  }
+  return str.GetLength() == m_pData->m_nDataLength &&
+         wmemcmp(str.GetPtr(), m_pData->m_String, m_pData->m_nDataLength) == 0;
+}
+bool CFX_WideString::Equal(const CFX_WideString& other) const {
+  if (IsEmpty()) {
+    return other.IsEmpty();
+  }
+  if (other.IsEmpty()) {
+    return false;
+  }
+  return other.m_pData->m_nDataLength == m_pData->m_nDataLength &&
+         wmemcmp(other.m_pData->m_String, m_pData->m_String,
+                 m_pData->m_nDataLength) == 0;
+}
+void CFX_WideString::Empty() {
+  if (m_pData) {
+    m_pData->Release();
+    m_pData = NULL;
+  }
+}
+void CFX_WideString::ConcatInPlace(FX_STRSIZE nSrcLen,
+                                   const FX_WCHAR* lpszSrcData) {
+  if (nSrcLen == 0 || !lpszSrcData) {
+    return;
+  }
+  if (!m_pData) {
+    m_pData = StringData::Create(nSrcLen);
+    if (m_pData) {
+      FXSYS_memcpy(m_pData->m_String, lpszSrcData, nSrcLen * sizeof(FX_WCHAR));
+    }
+    return;
+  }
+  if (m_pData->m_nRefs > 1 ||
+      m_pData->m_nDataLength + nSrcLen > m_pData->m_nAllocLength) {
+    ConcatCopy(m_pData->m_nDataLength, m_pData->m_String, nSrcLen, lpszSrcData);
+  } else {
+    FXSYS_memcpy(m_pData->m_String + m_pData->m_nDataLength, lpszSrcData,
+                 nSrcLen * sizeof(FX_WCHAR));
+    m_pData->m_nDataLength += nSrcLen;
+    m_pData->m_String[m_pData->m_nDataLength] = 0;
+  }
+}
+void CFX_WideString::ConcatCopy(FX_STRSIZE nSrc1Len,
+                                const FX_WCHAR* lpszSrc1Data,
+                                FX_STRSIZE nSrc2Len,
+                                const FX_WCHAR* lpszSrc2Data) {
+  FX_STRSIZE nNewLen = nSrc1Len + nSrc2Len;
+  if (nNewLen <= 0) {
+    return;
+  }
+  // Don't release until done copying, might be one of the arguments.
+  StringData* pOldData = m_pData;
+  m_pData = StringData::Create(nNewLen);
+  if (m_pData) {
+    wmemcpy(m_pData->m_String, lpszSrc1Data, nSrc1Len);
+    wmemcpy(m_pData->m_String + nSrc1Len, lpszSrc2Data, nSrc2Len);
+  }
+  pOldData->Release();
+}
+void CFX_WideString::CopyBeforeWrite() {
+  if (!m_pData || m_pData->m_nRefs <= 1) {
+    return;
+  }
+  StringData* pData = m_pData;
+  m_pData->Release();
+  FX_STRSIZE nDataLength = pData->m_nDataLength;
+  m_pData = StringData::Create(nDataLength);
+  if (m_pData) {
+    FXSYS_memcpy(m_pData->m_String, pData->m_String,
+                 (nDataLength + 1) * sizeof(FX_WCHAR));
+  }
+}
+void CFX_WideString::AllocBeforeWrite(FX_STRSIZE nLen) {
+  if (m_pData && m_pData->m_nRefs <= 1 && m_pData->m_nAllocLength >= nLen) {
+    return;
+  }
+  Empty();
+  m_pData = StringData::Create(nLen);
+}
+void CFX_WideString::AssignCopy(FX_STRSIZE nSrcLen,
+                                const FX_WCHAR* lpszSrcData) {
+  AllocBeforeWrite(nSrcLen);
+  FXSYS_memcpy(m_pData->m_String, lpszSrcData, nSrcLen * sizeof(FX_WCHAR));
+  m_pData->m_nDataLength = nSrcLen;
+  m_pData->m_String[nSrcLen] = 0;
+}
+int CFX_WideString::Compare(const FX_WCHAR* lpsz) const {
+  if (m_pData)
+    return FXSYS_wcscmp(m_pData->m_String, lpsz);
+  return (!lpsz || lpsz[0] == 0) ? 0 : -1;
+}
+CFX_ByteString CFX_WideString::UTF8Encode() const {
+  return FX_UTF8Encode(*this);
+}
+CFX_ByteString CFX_WideString::UTF16LE_Encode() const {
+  if (!m_pData) {
+    return CFX_ByteString("\0\0", 2);
+  }
+  int len = m_pData->m_nDataLength;
+  CFX_ByteString result;
+  FX_CHAR* buffer = result.GetBuffer(len * 2 + 2);
+  for (int i = 0; i < len; i++) {
+    buffer[i * 2] = m_pData->m_String[i] & 0xff;
+    buffer[i * 2 + 1] = m_pData->m_String[i] >> 8;
+  }
+  buffer[len * 2] = 0;
+  buffer[len * 2 + 1] = 0;
+  result.ReleaseBuffer(len * 2 + 2);
+  return result;
+}
+
+void CFX_WideString::Reserve(FX_STRSIZE len) {
+  GetBuffer(len);
+  ReleaseBuffer(GetLength());
+}
+FX_WCHAR* CFX_WideString::GetBuffer(FX_STRSIZE nMinBufLength) {
+  if (!m_pData && nMinBufLength == 0) {
+    return NULL;
+  }
+  if (m_pData && m_pData->m_nRefs <= 1 &&
+      m_pData->m_nAllocLength >= nMinBufLength) {
+    return m_pData->m_String;
+  }
+  if (!m_pData) {
+    m_pData = StringData::Create(nMinBufLength);
+    if (!m_pData) {
+      return NULL;
+    }
+    m_pData->m_nDataLength = 0;
+    m_pData->m_String[0] = 0;
+    return m_pData->m_String;
+  }
+  StringData* pOldData = m_pData;
+  FX_STRSIZE nOldLen = pOldData->m_nDataLength;
+  if (nMinBufLength < nOldLen) {
+    nMinBufLength = nOldLen;
+  }
+  m_pData = StringData::Create(nMinBufLength);
+  if (!m_pData) {
+    return NULL;
+  }
+  FXSYS_memcpy(m_pData->m_String, pOldData->m_String,
+               (nOldLen + 1) * sizeof(FX_WCHAR));
+  m_pData->m_nDataLength = nOldLen;
+  pOldData->Release();
+  return m_pData->m_String;
+}
+
+// static
+CFX_WideString CFX_WideString::FromLocal(const CFX_ByteString& str) {
+  return FromCodePage(str, 0);
+}
+
+// static
+CFX_WideString CFX_WideString::FromCodePage(const CFX_ByteString& str,
+                                            FX_WORD codepage) {
+  return CFX_CharMap::GetWideString(codepage, str);
+}
+
+// static
+CFX_WideString CFX_WideString::FromUTF8(const char* str, FX_STRSIZE len) {
+  if (!str || 0 == len) {
+    return CFX_WideString();
+  }
+
+  CFX_UTF8Decoder decoder;
+  for (FX_STRSIZE i = 0; i < len; i++) {
+    decoder.Input(str[i]);
+  }
+  return decoder.GetResult();
+}
+
+// static
+CFX_WideString CFX_WideString::FromUTF16LE(const unsigned short* wstr,
+                                           FX_STRSIZE wlen) {
+  if (!wstr || 0 == wlen) {
+    return CFX_WideString();
+  }
+
+  CFX_WideString result;
+  FX_WCHAR* buf = result.GetBuffer(wlen);
+  for (int i = 0; i < wlen; i++) {
+    buf[i] = wstr[i];
+  }
+  result.ReleaseBuffer(wlen);
+  return result;
+}
+
+FX_STRSIZE CFX_WideString::WStringLength(const unsigned short* str) {
+  FX_STRSIZE len = 0;
+  if (str)
+    while (str[len])
+      len++;
+  return len;
+}
+
+void CFX_WideString::AllocCopy(CFX_WideString& dest,
+                               FX_STRSIZE nCopyLen,
+                               FX_STRSIZE nCopyIndex) const {
+  // |FX_STRSIZE| is currently typedef'd as in |int|. TODO(palmer): It
+  // should be a |size_t|, or at least unsigned.
+  if (nCopyLen == 0 || nCopyLen < 0) {
+    return;
+  }
+  pdfium::base::CheckedNumeric<FX_STRSIZE> iSize =
+      static_cast<FX_STRSIZE>(sizeof(FX_WCHAR));
+  iSize *= nCopyLen;
+  ASSERT(!dest.m_pData);
+  dest.m_pData = StringData::Create(nCopyLen);
+  if (dest.m_pData) {
+    FXSYS_memcpy(dest.m_pData->m_String, m_pData->m_String + nCopyIndex,
+                 iSize.ValueOrDie());
+  }
+}
+CFX_WideString CFX_WideString::Left(FX_STRSIZE nCount) const {
+  if (!m_pData) {
+    return CFX_WideString();
+  }
+  if (nCount < 0) {
+    nCount = 0;
+  }
+  if (nCount >= m_pData->m_nDataLength) {
+    return *this;
+  }
+  CFX_WideString dest;
+  AllocCopy(dest, nCount, 0);
+  return dest;
+}
+CFX_WideString CFX_WideString::Mid(FX_STRSIZE nFirst) const {
+  return Mid(nFirst, m_pData->m_nDataLength - nFirst);
+}
+CFX_WideString CFX_WideString::Mid(FX_STRSIZE nFirst, FX_STRSIZE nCount) const {
+  if (!m_pData) {
+    return CFX_WideString();
+  }
+  if (nFirst < 0) {
+    nFirst = 0;
+  }
+  if (nCount < 0) {
+    nCount = 0;
+  }
+  if (nFirst + nCount > m_pData->m_nDataLength) {
+    nCount = m_pData->m_nDataLength - nFirst;
+  }
+  if (nFirst > m_pData->m_nDataLength) {
+    nCount = 0;
+  }
+  if (nFirst == 0 && nFirst + nCount == m_pData->m_nDataLength) {
+    return *this;
+  }
+  CFX_WideString dest;
+  AllocCopy(dest, nCount, nFirst);
+  return dest;
+}
+CFX_WideString CFX_WideString::Right(FX_STRSIZE nCount) const {
+  if (!m_pData) {
+    return CFX_WideString();
+  }
+  if (nCount < 0) {
+    nCount = 0;
+  }
+  if (nCount >= m_pData->m_nDataLength) {
+    return *this;
+  }
+  CFX_WideString dest;
+  AllocCopy(dest, nCount, m_pData->m_nDataLength - nCount);
+  return dest;
+}
+int CFX_WideString::CompareNoCase(const FX_WCHAR* lpsz) const {
+  if (!m_pData) {
+    return (!lpsz || lpsz[0] == 0) ? 0 : -1;
+  }
+  return FXSYS_wcsicmp(m_pData->m_String, lpsz);
+}
+int CFX_WideString::Compare(const CFX_WideString& str) const {
+  if (!m_pData) {
+    if (!str.m_pData) {
+      return 0;
+    }
+    return -1;
+  }
+  if (!str.m_pData) {
+    return 1;
+  }
+  int this_len = m_pData->m_nDataLength;
+  int that_len = str.m_pData->m_nDataLength;
+  int min_len = this_len < that_len ? this_len : that_len;
+  for (int i = 0; i < min_len; i++) {
+    if (m_pData->m_String[i] < str.m_pData->m_String[i]) {
+      return -1;
+    }
+    if (m_pData->m_String[i] > str.m_pData->m_String[i]) {
+      return 1;
+    }
+  }
+  if (this_len < that_len) {
+    return -1;
+  }
+  if (this_len > that_len) {
+    return 1;
+  }
+  return 0;
+}
+void CFX_WideString::SetAt(FX_STRSIZE nIndex, FX_WCHAR ch) {
+  if (!m_pData) {
+    return;
+  }
+  ASSERT(nIndex >= 0);
+  ASSERT(nIndex < m_pData->m_nDataLength);
+  CopyBeforeWrite();
+  m_pData->m_String[nIndex] = ch;
+}
+void CFX_WideString::MakeLower() {
+  if (!m_pData) {
+    return;
+  }
+  CopyBeforeWrite();
+  if (GetLength() < 1) {
+    return;
+  }
+  FXSYS_wcslwr(m_pData->m_String);
+}
+void CFX_WideString::MakeUpper() {
+  if (!m_pData) {
+    return;
+  }
+  CopyBeforeWrite();
+  if (GetLength() < 1) {
+    return;
+  }
+  FXSYS_wcsupr(m_pData->m_String);
+}
+FX_STRSIZE CFX_WideString::Find(const FX_WCHAR* lpszSub,
+                                FX_STRSIZE nStart) const {
+  FX_STRSIZE nLength = GetLength();
+  if (nLength < 1 || nStart > nLength) {
+    return -1;
+  }
+  const FX_WCHAR* lpsz = FXSYS_wcsstr(m_pData->m_String + nStart, lpszSub);
+  return lpsz ? (int)(lpsz - m_pData->m_String) : -1;
+}
+FX_STRSIZE CFX_WideString::Find(FX_WCHAR ch, FX_STRSIZE nStart) const {
+  if (!m_pData) {
+    return -1;
+  }
+  FX_STRSIZE nLength = m_pData->m_nDataLength;
+  if (nStart >= nLength) {
+    return -1;
+  }
+  const FX_WCHAR* lpsz = FXSYS_wcschr(m_pData->m_String + nStart, ch);
+  return (lpsz) ? (int)(lpsz - m_pData->m_String) : -1;
+}
+void CFX_WideString::TrimRight(const FX_WCHAR* lpszTargetList) {
+  FXSYS_assert(lpszTargetList);
+  if (!m_pData || *lpszTargetList == 0) {
+    return;
+  }
+  CopyBeforeWrite();
+  FX_STRSIZE len = GetLength();
+  if (len < 1) {
+    return;
+  }
+  FX_STRSIZE pos = len;
+  while (pos) {
+    if (!FXSYS_wcschr(lpszTargetList, m_pData->m_String[pos - 1])) {
+      break;
+    }
+    pos--;
+  }
+  if (pos < len) {
+    m_pData->m_String[pos] = 0;
+    m_pData->m_nDataLength = pos;
+  }
+}
+void CFX_WideString::TrimRight(FX_WCHAR chTarget) {
+  FX_WCHAR str[2] = {chTarget, 0};
+  TrimRight(str);
+}
+void CFX_WideString::TrimRight() {
+  TrimRight(L"\x09\x0a\x0b\x0c\x0d\x20");
+}
+void CFX_WideString::TrimLeft(const FX_WCHAR* lpszTargets) {
+  FXSYS_assert(lpszTargets);
+  if (!m_pData || *lpszTargets == 0) {
+    return;
+  }
+  CopyBeforeWrite();
+  if (GetLength() < 1) {
+    return;
+  }
+  const FX_WCHAR* lpsz = m_pData->m_String;
+  while (*lpsz != 0) {
+    if (!FXSYS_wcschr(lpszTargets, *lpsz)) {
+      break;
+    }
+    lpsz++;
+  }
+  if (lpsz != m_pData->m_String) {
+    int nDataLength =
+        m_pData->m_nDataLength - (FX_STRSIZE)(lpsz - m_pData->m_String);
+    FXSYS_memmove(m_pData->m_String, lpsz,
+                  (nDataLength + 1) * sizeof(FX_WCHAR));
+    m_pData->m_nDataLength = nDataLength;
+  }
+}
+void CFX_WideString::TrimLeft(FX_WCHAR chTarget) {
+  FX_WCHAR str[2] = {chTarget, 0};
+  TrimLeft(str);
+}
+void CFX_WideString::TrimLeft() {
+  TrimLeft(L"\x09\x0a\x0b\x0c\x0d\x20");
+}
+FX_STRSIZE CFX_WideString::Replace(const FX_WCHAR* lpszOld,
+                                   const FX_WCHAR* lpszNew) {
+  if (GetLength() < 1) {
+    return 0;
+  }
+  if (!lpszOld) {
+    return 0;
+  }
+  FX_STRSIZE nSourceLen = FXSYS_wcslen(lpszOld);
+  if (nSourceLen == 0) {
+    return 0;
+  }
+  FX_STRSIZE nReplacementLen = lpszNew ? FXSYS_wcslen(lpszNew) : 0;
+  FX_STRSIZE nCount = 0;
+  FX_WCHAR* lpszStart = m_pData->m_String;
+  FX_WCHAR* lpszEnd = m_pData->m_String + m_pData->m_nDataLength;
+  FX_WCHAR* lpszTarget;
+  {
+    while ((lpszTarget = (FX_WCHAR*)FXSYS_wcsstr(lpszStart, lpszOld)) &&
+           lpszStart < lpszEnd) {
+      nCount++;
+      lpszStart = lpszTarget + nSourceLen;
+    }
+  }
+  if (nCount > 0) {
+    CopyBeforeWrite();
+    FX_STRSIZE nOldLength = m_pData->m_nDataLength;
+    FX_STRSIZE nNewLength =
+        nOldLength + (nReplacementLen - nSourceLen) * nCount;
+    if (m_pData->m_nAllocLength < nNewLength || m_pData->m_nRefs > 1) {
+      StringData* pOldData = m_pData;
+      const FX_WCHAR* pstr = m_pData->m_String;
+      m_pData = StringData::Create(nNewLength);
+      if (!m_pData) {
+        return 0;
+      }
+      FXSYS_memcpy(m_pData->m_String, pstr,
+                   pOldData->m_nDataLength * sizeof(FX_WCHAR));
+      pOldData->Release();
+    }
+    lpszStart = m_pData->m_String;
+    lpszEnd = m_pData->m_String + std::max(m_pData->m_nDataLength, nNewLength);
+    {
+      while ((lpszTarget = (FX_WCHAR*)FXSYS_wcsstr(lpszStart, lpszOld)) !=
+                 NULL &&
+             lpszStart < lpszEnd) {
+        FX_STRSIZE nBalance =
+            nOldLength -
+            (FX_STRSIZE)(lpszTarget - m_pData->m_String + nSourceLen);
+        FXSYS_memmove(lpszTarget + nReplacementLen, lpszTarget + nSourceLen,
+                      nBalance * sizeof(FX_WCHAR));
+        FXSYS_memcpy(lpszTarget, lpszNew, nReplacementLen * sizeof(FX_WCHAR));
+        lpszStart = lpszTarget + nReplacementLen;
+        lpszStart[nBalance] = 0;
+        nOldLength += (nReplacementLen - nSourceLen);
+      }
+    }
+    ASSERT(m_pData->m_String[nNewLength] == 0);
+    m_pData->m_nDataLength = nNewLength;
+  }
+  return nCount;
+}
+FX_STRSIZE CFX_WideString::Insert(FX_STRSIZE nIndex, FX_WCHAR ch) {
+  CopyBeforeWrite();
+  if (nIndex < 0) {
+    nIndex = 0;
+  }
+  FX_STRSIZE nNewLength = GetLength();
+  if (nIndex > nNewLength) {
+    nIndex = nNewLength;
+  }
+  nNewLength++;
+  if (!m_pData || m_pData->m_nAllocLength < nNewLength) {
+    StringData* pOldData = m_pData;
+    const FX_WCHAR* pstr = m_pData->m_String;
+    m_pData = StringData::Create(nNewLength);
+    if (!m_pData) {
+      return 0;
+    }
+    if (pOldData) {
+      FXSYS_memmove(m_pData->m_String, pstr,
+                    (pOldData->m_nDataLength + 1) * sizeof(FX_WCHAR));
+      pOldData->Release();
+    } else {
+      m_pData->m_String[0] = 0;
+    }
+  }
+  FXSYS_memmove(m_pData->m_String + nIndex + 1, m_pData->m_String + nIndex,
+                (nNewLength - nIndex) * sizeof(FX_WCHAR));
+  m_pData->m_String[nIndex] = ch;
+  m_pData->m_nDataLength = nNewLength;
+  return nNewLength;
+}
+FX_STRSIZE CFX_WideString::Delete(FX_STRSIZE nIndex, FX_STRSIZE nCount) {
+  if (GetLength() < 1) {
+    return 0;
+  }
+  if (nIndex < 0) {
+    nIndex = 0;
+  }
+  FX_STRSIZE nOldLength = m_pData->m_nDataLength;
+  if (nCount > 0 && nIndex < nOldLength) {
+    CopyBeforeWrite();
+    int nBytesToCopy = nOldLength - (nIndex + nCount) + 1;
+    FXSYS_memmove(m_pData->m_String + nIndex,
+                  m_pData->m_String + nIndex + nCount,
+                  nBytesToCopy * sizeof(FX_WCHAR));
+    m_pData->m_nDataLength = nOldLength - nCount;
+  }
+  return m_pData->m_nDataLength;
+}
+FX_STRSIZE CFX_WideString::Remove(FX_WCHAR chRemove) {
+  if (!m_pData) {
+    return 0;
+  }
+  CopyBeforeWrite();
+  if (GetLength() < 1) {
+    return 0;
+  }
+  FX_WCHAR* pstrSource = m_pData->m_String;
+  FX_WCHAR* pstrDest = m_pData->m_String;
+  FX_WCHAR* pstrEnd = m_pData->m_String + m_pData->m_nDataLength;
+  while (pstrSource < pstrEnd) {
+    if (*pstrSource != chRemove) {
+      *pstrDest = *pstrSource;
+      pstrDest++;
+    }
+    pstrSource++;
+  }
+  *pstrDest = 0;
+  FX_STRSIZE nCount = (FX_STRSIZE)(pstrSource - pstrDest);
+  m_pData->m_nDataLength -= nCount;
+  return nCount;
+}
+#define FORCE_ANSI 0x10000
+#define FORCE_UNICODE 0x20000
+#define FORCE_INT64 0x40000
+void CFX_WideString::FormatV(const FX_WCHAR* lpszFormat, va_list argList) {
+  va_list argListSave;
+#if defined(__ARMCC_VERSION) ||                                              \
+    (!defined(_MSC_VER) && (_FX_CPU_ == _FX_X64_ || _FX_CPU_ == _FX_IA64_ || \
+                            _FX_CPU_ == _FX_ARM64_)) ||                      \
+    defined(__native_client__)
+  va_copy(argListSave, argList);
+#else
+  argListSave = argList;
+#endif
+  int nMaxLen = 0;
+  for (const FX_WCHAR* lpsz = lpszFormat; *lpsz != 0; lpsz++) {
+    if (*lpsz != '%' || *(lpsz = lpsz + 1) == '%') {
+      nMaxLen += FXSYS_wcslen(lpsz);
+      continue;
+    }
+    int nItemLen = 0;
+    int nWidth = 0;
+    for (; *lpsz != 0; lpsz++) {
+      if (*lpsz == '#') {
+        nMaxLen += 2;
+      } else if (*lpsz == '*') {
+        nWidth = va_arg(argList, int);
+      } else if (*lpsz != '-' && *lpsz != '+' && *lpsz != '0' && *lpsz != ' ') {
+        break;
+      }
+    }
+    if (nWidth == 0) {
+      nWidth = FXSYS_wtoi(lpsz);
+      while (std::iswdigit(*lpsz))
+        ++lpsz;
+    }
+    if (nWidth < 0 || nWidth > 128 * 1024) {
+      lpszFormat = L"Bad width";
+      nMaxLen = 10;
+      break;
+    }
+    int nPrecision = 0;
+    if (*lpsz == '.') {
+      lpsz++;
+      if (*lpsz == '*') {
+        nPrecision = va_arg(argList, int);
+        lpsz++;
+      } else {
+        nPrecision = FXSYS_wtoi(lpsz);
+        while (std::iswdigit(*lpsz))
+          ++lpsz;
+      }
+    }
+    if (nPrecision < 0 || nPrecision > 128 * 1024) {
+      lpszFormat = L"Bad precision";
+      nMaxLen = 14;
+      break;
+    }
+    int nModifier = 0;
+    if (*lpsz == L'I' && *(lpsz + 1) == L'6' && *(lpsz + 2) == L'4') {
+      lpsz += 3;
+      nModifier = FORCE_INT64;
+    } else {
+      switch (*lpsz) {
+        case 'h':
+          nModifier = FORCE_ANSI;
+          lpsz++;
+          break;
+        case 'l':
+          nModifier = FORCE_UNICODE;
+          lpsz++;
+          break;
+        case 'F':
+        case 'N':
+        case 'L':
+          lpsz++;
+          break;
+      }
+    }
+    switch (*lpsz | nModifier) {
+      case 'c':
+      case 'C':
+        nItemLen = 2;
+        va_arg(argList, int);
+        break;
+      case 'c' | FORCE_ANSI:
+      case 'C' | FORCE_ANSI:
+        nItemLen = 2;
+        va_arg(argList, int);
+        break;
+      case 'c' | FORCE_UNICODE:
+      case 'C' | FORCE_UNICODE:
+        nItemLen = 2;
+        va_arg(argList, int);
+        break;
+      case 's': {
+        const FX_WCHAR* pstrNextArg = va_arg(argList, const FX_WCHAR*);
+        if (pstrNextArg) {
+          nItemLen = FXSYS_wcslen(pstrNextArg);
+          if (nItemLen < 1) {
+            nItemLen = 1;
+          }
+        } else {
+          nItemLen = 6;
+        }
+      } break;
+      case 'S': {
+        const FX_CHAR* pstrNextArg = va_arg(argList, const FX_CHAR*);
+        if (pstrNextArg) {
+          nItemLen = FXSYS_strlen(pstrNextArg);
+          if (nItemLen < 1) {
+            nItemLen = 1;
+          }
+        } else {
+          nItemLen = 6;
+        }
+      } break;
+      case 's' | FORCE_ANSI:
+      case 'S' | FORCE_ANSI: {
+        const FX_CHAR* pstrNextArg = va_arg(argList, const FX_CHAR*);
+        if (pstrNextArg) {
+          nItemLen = FXSYS_strlen(pstrNextArg);
+          if (nItemLen < 1) {
+            nItemLen = 1;
+          }
+        } else {
+          nItemLen = 6;
+        }
+      } break;
+      case 's' | FORCE_UNICODE:
+      case 'S' | FORCE_UNICODE: {
+        FX_WCHAR* pstrNextArg = va_arg(argList, FX_WCHAR*);
+        if (pstrNextArg) {
+          nItemLen = FXSYS_wcslen(pstrNextArg);
+          if (nItemLen < 1) {
+            nItemLen = 1;
+          }
+        } else {
+          nItemLen = 6;
+        }
+      } break;
+    }
+    if (nItemLen != 0) {
+      if (nPrecision != 0 && nItemLen > nPrecision) {
+        nItemLen = nPrecision;
+      }
+      if (nItemLen < nWidth) {
+        nItemLen = nWidth;
+      }
+    } else {
+      switch (*lpsz) {
+        case 'd':
+        case 'i':
+        case 'u':
+        case 'x':
+        case 'X':
+        case 'o':
+          if (nModifier & FORCE_INT64) {
+            va_arg(argList, int64_t);
+          } else {
+            va_arg(argList, int);
+          }
+          nItemLen = 32;
+          if (nItemLen < nWidth + nPrecision) {
+            nItemLen = nWidth + nPrecision;
+          }
+          break;
+        case 'a':
+        case 'A':
+        case 'e':
+        case 'E':
+        case 'g':
+        case 'G':
+          va_arg(argList, double);
+          nItemLen = 128;
+          if (nItemLen < nWidth + nPrecision) {
+            nItemLen = nWidth + nPrecision;
+          }
+          break;
+        case 'f':
+          if (nWidth + nPrecision > 100) {
+            nItemLen = nPrecision + nWidth + 128;
+          } else {
+            double f;
+            char pszTemp[256];
+            f = va_arg(argList, double);
+            FXSYS_snprintf(pszTemp, sizeof(pszTemp), "%*.*f", nWidth,
+                           nPrecision + 6, f);
+            nItemLen = FXSYS_strlen(pszTemp);
+          }
+          break;
+        case 'p':
+          va_arg(argList, void*);
+          nItemLen = 32;
+          if (nItemLen < nWidth + nPrecision) {
+            nItemLen = nWidth + nPrecision;
+          }
+          break;
+        case 'n':
+          va_arg(argList, int*);
+          break;
+      }
+    }
+    nMaxLen += nItemLen;
+  }
+  GetBuffer(nMaxLen);
+  if (m_pData) {
+    FXSYS_vswprintf((wchar_t*)m_pData->m_String, nMaxLen + 1,
+                    (const wchar_t*)lpszFormat, argListSave);
+    ReleaseBuffer();
+  }
+  va_end(argListSave);
+}
+void CFX_WideString::Format(const FX_WCHAR* lpszFormat, ...) {
+  va_list argList;
+  va_start(argList, lpszFormat);
+  FormatV(lpszFormat, argList);
+  va_end(argList);
+}
+FX_FLOAT FX_wtof(const FX_WCHAR* str, int len) {
+  if (len == 0) {
+    return 0.0;
+  }
+  int cc = 0;
+  FX_BOOL bNegative = FALSE;
+  if (str[0] == '+') {
+    cc++;
+  } else if (str[0] == '-') {
+    bNegative = TRUE;
+    cc++;
+  }
+  int integer = 0;
+  while (cc < len) {
+    if (str[cc] == '.') {
+      break;
+    }
+    integer = integer * 10 + FXSYS_toDecimalDigit(str[cc]);
+    cc++;
+  }
+  FX_FLOAT fraction = 0;
+  if (str[cc] == '.') {
+    cc++;
+    FX_FLOAT scale = 0.1f;
+    while (cc < len) {
+      fraction += scale * FXSYS_toDecimalDigit(str[cc]);
+      scale *= 0.1f;
+      cc++;
+    }
+  }
+  fraction += (FX_FLOAT)integer;
+  return bNegative ? -fraction : fraction;
+}
+int CFX_WideString::GetInteger() const {
+  return m_pData ? FXSYS_wtoi(m_pData->m_String) : 0;
+}
+FX_FLOAT CFX_WideString::GetFloat() const {
+  return m_pData ? FX_wtof(m_pData->m_String, m_pData->m_nDataLength) : 0.0f;
+}
+
+// static
+CFX_ByteString CFX_CharMap::GetByteString(FX_WORD codepage,
+                                          const CFX_WideString& wstr) {
+  FXSYS_assert(IsValidCodePage(codepage));
+  int src_len = wstr.GetLength();
+  int dest_len = FXSYS_WideCharToMultiByte(codepage, 0, wstr.c_str(), src_len,
+                                           nullptr, 0, nullptr, nullptr);
+  CFX_ByteString bstr;
+  if (dest_len) {
+    FX_CHAR* dest_buf = bstr.GetBuffer(dest_len);
+    FXSYS_WideCharToMultiByte(codepage, 0, wstr.c_str(), src_len, dest_buf,
+                              dest_len, nullptr, nullptr);
+    bstr.ReleaseBuffer(dest_len);
+  }
+  return bstr;
+}
+
+// static
+CFX_WideString CFX_CharMap::GetWideString(FX_WORD codepage,
+                                          const CFX_ByteString& bstr) {
+  FXSYS_assert(IsValidCodePage(codepage));
+  int src_len = bstr.GetLength();
+  int dest_len =
+      FXSYS_MultiByteToWideChar(codepage, 0, bstr, src_len, nullptr, 0);
+  CFX_WideString wstr;
+  if (dest_len) {
+    FX_WCHAR* dest_buf = wstr.GetBuffer(dest_len);
+    FXSYS_MultiByteToWideChar(codepage, 0, bstr, src_len, dest_buf, dest_len);
+    wstr.ReleaseBuffer(dest_len);
+  }
+  return wstr;
+}