Re-arrange fxcrt string files to match naming.

The top-level fx_string.h is kept to include all strings.
Put all fx_atof code in fx_basic_util.cpp rather than header.

Change-Id: I61fe768f2e1ddf8438d27e410929f4cff918a9a3
Reviewed-on: https://pdfium-review.googlesource.com/3530
Reviewed-by: Nicolás Peña <npm@chromium.org>
Commit-Queue: Tom Sepez <tsepez@chromium.org>

1 files changed, 0 insertions, 818 deletions

diff --git a/core/fxcrt/fx_basic_bstring.cpp b/core/fxcrt/fx_basic_bstring.cpp
deleted file mode 100644
index 1ce1ffa563..0000000000
--- a/core/fxcrt/fx_basic_bstring.cpp
+++ /dev/null
@@ -1,818 +0,0 @@
-// 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/fxcrt/cfx_string_pool_template.h"
-#include "core/fxcrt/fx_basic.h"
-#include "third_party/base/numerics/safe_math.h"
-#include "third_party/base/stl_util.h"
-
-template class CFX_StringDataTemplate<char>;
-template class CFX_StringCTemplate<char>;
-template class CFX_StringPoolTemplate<CFX_ByteString>;
-template struct std::hash<CFX_ByteString>;
-
-namespace {
-
-int Buffer_itoa(char* buf, int i, uint32_t flags) {
-  if (i == 0) {
-    buf[0] = '0';
-    return 1;
-  }
-  char buf1[32];
-  int buf_pos = 31;
-  uint32_t u = i;
-  if ((flags & FXFORMAT_SIGNED) && i < 0) {
-    u = -i;
-  }
-  int base = 10;
-  const char* str = "0123456789abcdef";
-  if (flags & FXFORMAT_HEX) {
-    base = 16;
-    if (flags & FXFORMAT_CAPITAL) {
-      str = "0123456789ABCDEF";
-    }
-  }
-  while (u != 0) {
-    buf1[buf_pos--] = str[u % base];
-    u = u / base;
-  }
-  if ((flags & FXFORMAT_SIGNED) && i < 0) {
-    buf1[buf_pos--] = '-';
-  }
-  int len = 31 - buf_pos;
-  for (int ii = 0; ii < len; ii++) {
-    buf[ii] = buf1[ii + buf_pos + 1];
-  }
-  return len;
-}
-
-const char* FX_strstr(const char* haystack,
-                      int haystack_len,
-                      const char* needle,
-                      int needle_len) {
-  if (needle_len > haystack_len || needle_len == 0) {
-    return nullptr;
-  }
-  const char* end_ptr = haystack + haystack_len - needle_len;
-  while (haystack <= end_ptr) {
-    int i = 0;
-    while (1) {
-      if (haystack[i] != needle[i]) {
-        break;
-      }
-      i++;
-      if (i == needle_len) {
-        return haystack;
-      }
-    }
-    haystack++;
-  }
-  return nullptr;
-}
-
-}  // namespace
-
-static_assert(sizeof(CFX_ByteString) <= sizeof(char*),
-              "Strings must not require more space than pointers");
-
-CFX_ByteString::CFX_ByteString(const char* pStr, FX_STRSIZE nLen) {
-  if (nLen < 0)
-    nLen = pStr ? FXSYS_strlen(pStr) : 0;
-
-  if (nLen)
-    m_pData.Reset(StringData::Create(pStr, nLen));
-}
-
-CFX_ByteString::CFX_ByteString(const uint8_t* pStr, FX_STRSIZE nLen) {
-  if (nLen > 0) {
-    m_pData.Reset(
-        StringData::Create(reinterpret_cast<const char*>(pStr), nLen));
-  }
-}
-
-CFX_ByteString::CFX_ByteString() {}
-
-CFX_ByteString::CFX_ByteString(const CFX_ByteString& other)
-    : m_pData(other.m_pData) {}
-
-CFX_ByteString::CFX_ByteString(CFX_ByteString&& other) noexcept {
-  m_pData.Swap(other.m_pData);
-}
-
-CFX_ByteString::CFX_ByteString(char ch) {
-  m_pData.Reset(StringData::Create(1));
-  m_pData->m_String[0] = ch;
-}
-
-CFX_ByteString::CFX_ByteString(const char* ptr)
-    : CFX_ByteString(ptr, ptr ? FXSYS_strlen(ptr) : 0) {}
-
-CFX_ByteString::CFX_ByteString(const CFX_ByteStringC& stringSrc) {
-  if (!stringSrc.IsEmpty())
-    m_pData.Reset(StringData::Create(stringSrc.c_str(), stringSrc.GetLength()));
-}
-
-CFX_ByteString::CFX_ByteString(const CFX_ByteStringC& str1,
-                               const CFX_ByteStringC& str2) {
-  int nNewLen = str1.GetLength() + str2.GetLength();
-  if (nNewLen == 0)
-    return;
-
-  m_pData.Reset(StringData::Create(nNewLen));
-  m_pData->CopyContents(str1.c_str(), str1.GetLength());
-  m_pData->CopyContentsAt(str1.GetLength(), str2.c_str(), str2.GetLength());
-}
-
-CFX_ByteString::~CFX_ByteString() {}
-
-const CFX_ByteString& CFX_ByteString::operator=(const char* pStr) {
-  if (!pStr || !pStr[0])
-    clear();
-  else
-    AssignCopy(pStr, FXSYS_strlen(pStr));
-
-  return *this;
-}
-
-const CFX_ByteString& CFX_ByteString::operator=(
-    const CFX_ByteStringC& stringSrc) {
-  if (stringSrc.IsEmpty())
-    clear();
-  else
-    AssignCopy(stringSrc.c_str(), stringSrc.GetLength());
-
-  return *this;
-}
-
-const CFX_ByteString& CFX_ByteString::operator=(
-    const CFX_ByteString& stringSrc) {
-  if (m_pData != stringSrc.m_pData)
-    m_pData = stringSrc.m_pData;
-
-  return *this;
-}
-
-const CFX_ByteString& CFX_ByteString::operator+=(const char* pStr) {
-  if (pStr)
-    Concat(pStr, FXSYS_strlen(pStr));
-
-  return *this;
-}
-
-const CFX_ByteString& CFX_ByteString::operator+=(char ch) {
-  Concat(&ch, 1);
-  return *this;
-}
-
-const CFX_ByteString& CFX_ByteString::operator+=(const CFX_ByteString& str) {
-  if (str.m_pData)
-    Concat(str.m_pData->m_String, str.m_pData->m_nDataLength);
-
-  return *this;
-}
-
-const CFX_ByteString& CFX_ByteString::operator+=(const CFX_ByteStringC& str) {
-  if (!str.IsEmpty())
-    Concat(str.c_str(), str.GetLength());
-
-  return *this;
-}
-
-bool CFX_ByteString::operator==(const char* ptr) const {
-  if (!m_pData)
-    return !ptr || !ptr[0];
-
-  if (!ptr)
-    return m_pData->m_nDataLength == 0;
-
-  return FXSYS_strlen(ptr) == m_pData->m_nDataLength &&
-         FXSYS_memcmp(ptr, m_pData->m_String, m_pData->m_nDataLength) == 0;
-}
-
-bool CFX_ByteString::operator==(const CFX_ByteStringC& str) const {
-  if (!m_pData)
-    return str.IsEmpty();
-
-  return m_pData->m_nDataLength == str.GetLength() &&
-         FXSYS_memcmp(m_pData->m_String, str.c_str(), str.GetLength()) == 0;
-}
-
-bool CFX_ByteString::operator==(const CFX_ByteString& other) const {
-  if (m_pData == other.m_pData)
-    return true;
-
-  if (IsEmpty())
-    return other.IsEmpty();
-
-  if (other.IsEmpty())
-    return false;
-
-  return other.m_pData->m_nDataLength == m_pData->m_nDataLength &&
-         FXSYS_memcmp(other.m_pData->m_String, m_pData->m_String,
-                      m_pData->m_nDataLength) == 0;
-}
-
-bool CFX_ByteString::operator<(const CFX_ByteString& str) const {
-  if (m_pData == str.m_pData)
-    return false;
-
-  int result = FXSYS_memcmp(c_str(), str.c_str(),
-                            std::min(GetLength(), str.GetLength()));
-  return result < 0 || (result == 0 && GetLength() < str.GetLength());
-}
-
-bool CFX_ByteString::EqualNoCase(const CFX_ByteStringC& str) const {
-  if (!m_pData)
-    return str.IsEmpty();
-
-  FX_STRSIZE len = str.GetLength();
-  if (m_pData->m_nDataLength != len)
-    return false;
-
-  const uint8_t* pThis = (const uint8_t*)m_pData->m_String;
-  const uint8_t* pThat = str.raw_str();
-  for (FX_STRSIZE i = 0; i < len; i++) {
-    if ((*pThis) != (*pThat)) {
-      uint8_t bThis = *pThis;
-      if (bThis >= 'A' && bThis <= 'Z')
-        bThis += 'a' - 'A';
-
-      uint8_t bThat = *pThat;
-      if (bThat >= 'A' && bThat <= 'Z')
-        bThat += 'a' - 'A';
-
-      if (bThis != bThat)
-        return false;
-    }
-    pThis++;
-    pThat++;
-  }
-  return true;
-}
-
-void CFX_ByteString::AssignCopy(const char* pSrcData, FX_STRSIZE nSrcLen) {
-  AllocBeforeWrite(nSrcLen);
-  m_pData->CopyContents(pSrcData, nSrcLen);
-  m_pData->m_nDataLength = nSrcLen;
-}
-
-void CFX_ByteString::ReallocBeforeWrite(FX_STRSIZE nNewLength) {
-  if (m_pData && m_pData->CanOperateInPlace(nNewLength))
-    return;
-
-  if (nNewLength <= 0) {
-    clear();
-    return;
-  }
-
-  CFX_RetainPtr<StringData> pNewData(StringData::Create(nNewLength));
-  if (m_pData) {
-    FX_STRSIZE nCopyLength = std::min(m_pData->m_nDataLength, nNewLength);
-    pNewData->CopyContents(m_pData->m_String, nCopyLength);
-    pNewData->m_nDataLength = nCopyLength;
-  } else {
-    pNewData->m_nDataLength = 0;
-  }
-  pNewData->m_String[pNewData->m_nDataLength] = 0;
-  m_pData.Swap(pNewData);
-}
-
-void CFX_ByteString::AllocBeforeWrite(FX_STRSIZE nNewLength) {
-  if (m_pData && m_pData->CanOperateInPlace(nNewLength))
-    return;
-
-  if (nNewLength <= 0) {
-    clear();
-    return;
-  }
-
-  m_pData.Reset(StringData::Create(nNewLength));
-}
-
-void CFX_ByteString::ReleaseBuffer(FX_STRSIZE nNewLength) {
-  if (!m_pData)
-    return;
-
-  if (nNewLength == -1)
-    nNewLength = FXSYS_strlen(m_pData->m_String);
-
-  nNewLength = std::min(nNewLength, m_pData->m_nAllocLength);
-  if (nNewLength == 0) {
-    clear();
-    return;
-  }
-
-  ASSERT(m_pData->m_nRefs == 1);
-  m_pData->m_nDataLength = nNewLength;
-  m_pData->m_String[nNewLength] = 0;
-  if (m_pData->m_nAllocLength - nNewLength >= 32) {
-    // Over arbitrary threshold, so pay the price to relocate.  Force copy to
-    // always occur by holding a second reference to the string.
-    CFX_ByteString preserve(*this);
-    ReallocBeforeWrite(nNewLength);
-  }
-}
-
-void CFX_ByteString::Reserve(FX_STRSIZE len) {
-  GetBuffer(len);
-}
-
-char* CFX_ByteString::GetBuffer(FX_STRSIZE nMinBufLength) {
-  if (!m_pData) {
-    if (nMinBufLength == 0)
-      return nullptr;
-
-    m_pData.Reset(StringData::Create(nMinBufLength));
-    m_pData->m_nDataLength = 0;
-    m_pData->m_String[0] = 0;
-    return m_pData->m_String;
-  }
-
-  if (m_pData->CanOperateInPlace(nMinBufLength))
-    return m_pData->m_String;
-
-  nMinBufLength = std::max(nMinBufLength, m_pData->m_nDataLength);
-  if (nMinBufLength == 0)
-    return nullptr;
-
-  CFX_RetainPtr<StringData> pNewData(StringData::Create(nMinBufLength));
-  pNewData->CopyContents(*m_pData);
-  pNewData->m_nDataLength = m_pData->m_nDataLength;
-  m_pData.Swap(pNewData);
-  return m_pData->m_String;
-}
-
-FX_STRSIZE CFX_ByteString::Delete(FX_STRSIZE nIndex, FX_STRSIZE nCount) {
-  if (!m_pData)
-    return 0;
-
-  if (nIndex < 0)
-    nIndex = 0;
-
-  FX_STRSIZE nOldLength = m_pData->m_nDataLength;
-  if (nCount > 0 && nIndex < nOldLength) {
-    FX_STRSIZE mLength = nIndex + nCount;
-    if (mLength >= nOldLength) {
-      m_pData->m_nDataLength = nIndex;
-      return m_pData->m_nDataLength;
-    }
-    ReallocBeforeWrite(nOldLength);
-    int nCharsToCopy = nOldLength - mLength + 1;
-    FXSYS_memmove(m_pData->m_String + nIndex, m_pData->m_String + mLength,
-                  nCharsToCopy);
-    m_pData->m_nDataLength = nOldLength - nCount;
-  }
-  return m_pData->m_nDataLength;
-}
-
-void CFX_ByteString::Concat(const char* pSrcData, FX_STRSIZE nSrcLen) {
-  if (!pSrcData || nSrcLen <= 0)
-    return;
-
-  if (!m_pData) {
-    m_pData.Reset(StringData::Create(pSrcData, nSrcLen));
-    return;
-  }
-
-  if (m_pData->CanOperateInPlace(m_pData->m_nDataLength + nSrcLen)) {
-    m_pData->CopyContentsAt(m_pData->m_nDataLength, pSrcData, nSrcLen);
-    m_pData->m_nDataLength += nSrcLen;
-    return;
-  }
-
-  CFX_RetainPtr<StringData> pNewData(
-      StringData::Create(m_pData->m_nDataLength + nSrcLen));
-  pNewData->CopyContents(*m_pData);
-  pNewData->CopyContentsAt(m_pData->m_nDataLength, pSrcData, nSrcLen);
-  m_pData.Swap(pNewData);
-}
-
-CFX_ByteString CFX_ByteString::Mid(FX_STRSIZE nFirst) const {
-  if (!m_pData)
-    return CFX_ByteString();
-
-  return Mid(nFirst, m_pData->m_nDataLength - nFirst);
-}
-
-CFX_ByteString CFX_ByteString::Mid(FX_STRSIZE nFirst, FX_STRSIZE nCount) const {
-  if (!m_pData)
-    return CFX_ByteString();
-
-  nFirst = pdfium::clamp(nFirst, 0, m_pData->m_nDataLength);
-  nCount = pdfium::clamp(nCount, 0, m_pData->m_nDataLength - nFirst);
-  if (nCount == 0)
-    return CFX_ByteString();
-
-  if (nFirst == 0 && nCount == m_pData->m_nDataLength)
-    return *this;
-
-  CFX_ByteString dest;
-  AllocCopy(dest, nCount, nFirst);
-  return dest;
-}
-
-void CFX_ByteString::AllocCopy(CFX_ByteString& dest,
-                               FX_STRSIZE nCopyLen,
-                               FX_STRSIZE nCopyIndex) const {
-  if (nCopyLen <= 0)
-    return;
-
-  CFX_RetainPtr<StringData> pNewData(
-      StringData::Create(m_pData->m_String + nCopyIndex, nCopyLen));
-  dest.m_pData.Swap(pNewData);
-}
-
-#define FORCE_ANSI 0x10000
-#define FORCE_UNICODE 0x20000
-#define FORCE_INT64 0x40000
-
-CFX_ByteString CFX_ByteString::FormatInteger(int i, uint32_t flags) {
-  char buf[32];
-  return CFX_ByteString(buf, Buffer_itoa(buf, i, flags));
-}
-
-void CFX_ByteString::FormatV(const char* pFormat, va_list argList) {
-  va_list argListSave;
-  FX_VA_COPY(argListSave, argList);
-  FX_STRSIZE nMaxLen = vsnprintf(nullptr, 0, pFormat, argList);
-  if (nMaxLen > 0) {
-    GetBuffer(nMaxLen);
-    if (m_pData) {
-      // In the following two calls, there's always space in the buffer for
-      // a terminating NUL that's not included in nMaxLen.
-      memset(m_pData->m_String, 0, nMaxLen + 1);
-      vsnprintf(m_pData->m_String, nMaxLen + 1, pFormat, argListSave);
-      ReleaseBuffer();
-    }
-  }
-  va_end(argListSave);
-}
-
-void CFX_ByteString::Format(const char* pFormat, ...) {
-  va_list argList;
-  va_start(argList, pFormat);
-  FormatV(pFormat, argList);
-  va_end(argList);
-}
-
-FX_STRSIZE CFX_ByteString::Insert(FX_STRSIZE nIndex, char ch) {
-  FX_STRSIZE nNewLength = m_pData ? m_pData->m_nDataLength : 0;
-  nIndex = std::max(nIndex, 0);
-  nIndex = std::min(nIndex, nNewLength);
-  nNewLength++;
-
-  ReallocBeforeWrite(nNewLength);
-  FXSYS_memmove(m_pData->m_String + nIndex + 1, m_pData->m_String + nIndex,
-                nNewLength - nIndex);
-  m_pData->m_String[nIndex] = ch;
-  m_pData->m_nDataLength = nNewLength;
-  return nNewLength;
-}
-
-CFX_ByteString CFX_ByteString::Right(FX_STRSIZE nCount) const {
-  if (!m_pData)
-    return CFX_ByteString();
-
-  nCount = std::max(nCount, 0);
-  if (nCount >= m_pData->m_nDataLength)
-    return *this;
-
-  CFX_ByteString dest;
-  AllocCopy(dest, nCount, m_pData->m_nDataLength - nCount);
-  return dest;
-}
-
-CFX_ByteString CFX_ByteString::Left(FX_STRSIZE nCount) const {
-  if (!m_pData)
-    return CFX_ByteString();
-
-  nCount = std::max(nCount, 0);
-  if (nCount >= m_pData->m_nDataLength)
-    return *this;
-
-  CFX_ByteString dest;
-  AllocCopy(dest, nCount, 0);
-  return dest;
-}
-
-FX_STRSIZE CFX_ByteString::Find(char ch, FX_STRSIZE nStart) const {
-  if (!m_pData)
-    return -1;
-
-  if (nStart < 0 || nStart >= m_pData->m_nDataLength)
-    return -1;
-
-  const char* pStr = static_cast<const char*>(
-      memchr(m_pData->m_String + nStart, ch, m_pData->m_nDataLength - nStart));
-  return pStr ? pStr - m_pData->m_String : -1;
-}
-
-FX_STRSIZE CFX_ByteString::ReverseFind(char ch) const {
-  if (!m_pData)
-    return -1;
-
-  FX_STRSIZE nLength = m_pData->m_nDataLength;
-  while (nLength--) {
-    if (m_pData->m_String[nLength] == ch)
-      return nLength;
-  }
-  return -1;
-}
-
-FX_STRSIZE CFX_ByteString::Find(const CFX_ByteStringC& pSub,
-                                FX_STRSIZE nStart) const {
-  if (!m_pData)
-    return -1;
-
-  FX_STRSIZE nLength = m_pData->m_nDataLength;
-  if (nStart > nLength)
-    return -1;
-
-  const char* pStr =
-      FX_strstr(m_pData->m_String + nStart, m_pData->m_nDataLength - nStart,
-                pSub.c_str(), pSub.GetLength());
-  return pStr ? (int)(pStr - m_pData->m_String) : -1;
-}
-
-void CFX_ByteString::MakeLower() {
-  if (!m_pData)
-    return;
-
-  ReallocBeforeWrite(m_pData->m_nDataLength);
-  FXSYS_strlwr(m_pData->m_String);
-}
-
-void CFX_ByteString::MakeUpper() {
-  if (!m_pData)
-    return;
-
-  ReallocBeforeWrite(m_pData->m_nDataLength);
-  FXSYS_strupr(m_pData->m_String);
-}
-
-FX_STRSIZE CFX_ByteString::Remove(char chRemove) {
-  if (!m_pData || m_pData->m_nDataLength < 1)
-    return 0;
-
-  char* pstrSource = m_pData->m_String;
-  char* pstrEnd = m_pData->m_String + m_pData->m_nDataLength;
-  while (pstrSource < pstrEnd) {
-    if (*pstrSource == chRemove)
-      break;
-    pstrSource++;
-  }
-  if (pstrSource == pstrEnd)
-    return 0;
-
-  ptrdiff_t copied = pstrSource - m_pData->m_String;
-  ReallocBeforeWrite(m_pData->m_nDataLength);
-  pstrSource = m_pData->m_String + copied;
-  pstrEnd = m_pData->m_String + m_pData->m_nDataLength;
-
-  char* pstrDest = pstrSource;
-  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;
-}
-
-FX_STRSIZE CFX_ByteString::Replace(const CFX_ByteStringC& pOld,
-                                   const CFX_ByteStringC& pNew) {
-  if (!m_pData || pOld.IsEmpty())
-    return 0;
-
-  FX_STRSIZE nSourceLen = pOld.GetLength();
-  FX_STRSIZE nReplacementLen = pNew.GetLength();
-  FX_STRSIZE nCount = 0;
-  const char* pStart = m_pData->m_String;
-  char* pEnd = m_pData->m_String + m_pData->m_nDataLength;
-  while (1) {
-    const char* pTarget = FX_strstr(pStart, (FX_STRSIZE)(pEnd - pStart),
-                                    pOld.c_str(), nSourceLen);
-    if (!pTarget)
-      break;
-
-    nCount++;
-    pStart = pTarget + nSourceLen;
-  }
-  if (nCount == 0)
-    return 0;
-
-  FX_STRSIZE nNewLength =
-      m_pData->m_nDataLength + (nReplacementLen - nSourceLen) * nCount;
-
-  if (nNewLength == 0) {
-    clear();
-    return nCount;
-  }
-
-  CFX_RetainPtr<StringData> pNewData(StringData::Create(nNewLength));
-  pStart = m_pData->m_String;
-  char* pDest = pNewData->m_String;
-  for (FX_STRSIZE i = 0; i < nCount; i++) {
-    const char* pTarget = FX_strstr(pStart, (FX_STRSIZE)(pEnd - pStart),
-                                    pOld.c_str(), nSourceLen);
-    FXSYS_memcpy(pDest, pStart, pTarget - pStart);
-    pDest += pTarget - pStart;
-    FXSYS_memcpy(pDest, pNew.c_str(), pNew.GetLength());
-    pDest += pNew.GetLength();
-    pStart = pTarget + nSourceLen;
-  }
-  FXSYS_memcpy(pDest, pStart, pEnd - pStart);
-  m_pData.Swap(pNewData);
-  return nCount;
-}
-
-void CFX_ByteString::SetAt(FX_STRSIZE nIndex, char ch) {
-  if (!m_pData) {
-    return;
-  }
-  ASSERT(nIndex >= 0);
-  ASSERT(nIndex < m_pData->m_nDataLength);
-  ReallocBeforeWrite(m_pData->m_nDataLength);
-  m_pData->m_String[nIndex] = ch;
-}
-
-CFX_WideString CFX_ByteString::UTF8Decode() const {
-  CFX_UTF8Decoder decoder;
-  for (FX_STRSIZE i = 0; i < GetLength(); i++) {
-    decoder.Input((uint8_t)m_pData->m_String[i]);
-  }
-  return CFX_WideString(decoder.GetResult());
-}
-
-// static
-CFX_ByteString CFX_ByteString::FromUnicode(const wchar_t* str, FX_STRSIZE len) {
-  FX_STRSIZE str_len = len >= 0 ? len : FXSYS_wcslen(str);
-  return FromUnicode(CFX_WideString(str, str_len));
-}
-
-// static
-CFX_ByteString CFX_ByteString::FromUnicode(const CFX_WideString& str) {
-  return CFX_CharMap::GetByteString(0, str.AsStringC());
-}
-
-int CFX_ByteString::Compare(const CFX_ByteStringC& str) const {
-  if (!m_pData) {
-    return str.IsEmpty() ? 0 : -1;
-  }
-  int this_len = m_pData->m_nDataLength;
-  int that_len = str.GetLength();
-  int min_len = this_len < that_len ? this_len : that_len;
-  for (int i = 0; i < min_len; i++) {
-    if ((uint8_t)m_pData->m_String[i] < str.GetAt(i)) {
-      return -1;
-    }
-    if ((uint8_t)m_pData->m_String[i] > str.GetAt(i)) {
-      return 1;
-    }
-  }
-  if (this_len < that_len) {
-    return -1;
-  }
-  if (this_len > that_len) {
-    return 1;
-  }
-  return 0;
-}
-
-void CFX_ByteString::TrimRight(const CFX_ByteStringC& pTargets) {
-  if (!m_pData || pTargets.IsEmpty()) {
-    return;
-  }
-  FX_STRSIZE pos = GetLength();
-  if (pos < 1) {
-    return;
-  }
-  while (pos) {
-    FX_STRSIZE i = 0;
-    while (i < pTargets.GetLength() &&
-           pTargets[i] != m_pData->m_String[pos - 1]) {
-      i++;
-    }
-    if (i == pTargets.GetLength()) {
-      break;
-    }
-    pos--;
-  }
-  if (pos < m_pData->m_nDataLength) {
-    ReallocBeforeWrite(m_pData->m_nDataLength);
-    m_pData->m_String[pos] = 0;
-    m_pData->m_nDataLength = pos;
-  }
-}
-
-void CFX_ByteString::TrimRight(char chTarget) {
-  TrimRight(CFX_ByteStringC(chTarget));
-}
-
-void CFX_ByteString::TrimRight() {
-  TrimRight("\x09\x0a\x0b\x0c\x0d\x20");
-}
-
-void CFX_ByteString::TrimLeft(const CFX_ByteStringC& pTargets) {
-  if (!m_pData || pTargets.IsEmpty())
-    return;
-
-  FX_STRSIZE len = GetLength();
-  if (len < 1)
-    return;
-
-  FX_STRSIZE pos = 0;
-  while (pos < len) {
-    FX_STRSIZE i = 0;
-    while (i < pTargets.GetLength() && pTargets[i] != m_pData->m_String[pos]) {
-      i++;
-    }
-    if (i == pTargets.GetLength()) {
-      break;
-    }
-    pos++;
-  }
-  if (pos) {
-    ReallocBeforeWrite(len);
-    FX_STRSIZE nDataLength = len - pos;
-    FXSYS_memmove(m_pData->m_String, m_pData->m_String + pos,
-                  (nDataLength + 1) * sizeof(char));
-    m_pData->m_nDataLength = nDataLength;
-  }
-}
-
-void CFX_ByteString::TrimLeft(char chTarget) {
-  TrimLeft(CFX_ByteStringC(chTarget));
-}
-
-void CFX_ByteString::TrimLeft() {
-  TrimLeft("\x09\x0a\x0b\x0c\x0d\x20");
-}
-
-uint32_t CFX_ByteString::GetID(FX_STRSIZE start_pos) const {
-  return AsStringC().GetID(start_pos);
-}
-FX_STRSIZE FX_ftoa(float d, char* buf) {
-  buf[0] = '0';
-  buf[1] = '\0';
-  if (d == 0.0f) {
-    return 1;
-  }
-  bool bNegative = false;
-  if (d < 0) {
-    bNegative = true;
-    d = -d;
-  }
-  int scale = 1;
-  int scaled = FXSYS_round(d);
-  while (scaled < 100000) {
-    if (scale == 1000000) {
-      break;
-    }
-    scale *= 10;
-    scaled = FXSYS_round(d * scale);
-  }
-  if (scaled == 0) {
-    return 1;
-  }
-  char buf2[32];
-  int buf_size = 0;
-  if (bNegative) {
-    buf[buf_size++] = '-';
-  }
-  int i = scaled / scale;
-  FXSYS_itoa(i, buf2, 10);
-  FX_STRSIZE len = FXSYS_strlen(buf2);
-  FXSYS_memcpy(buf + buf_size, buf2, len);
-  buf_size += len;
-  int fraction = scaled % scale;
-  if (fraction == 0) {
-    return buf_size;
-  }
-  buf[buf_size++] = '.';
-  scale /= 10;
-  while (fraction) {
-    buf[buf_size++] = '0' + fraction / scale;
-    fraction %= scale;
-    scale /= 10;
-  }
-  return buf_size;
-}
-CFX_ByteString CFX_ByteString::FormatFloat(float d, int precision) {
-  char buf[32];
-  FX_STRSIZE len = FX_ftoa(d, buf);
-  return CFX_ByteString(buf, len);
-}