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>
diff --git a/core/fxcrt/cfx_widestring.cpp b/core/fxcrt/cfx_widestring.cpp
new file mode 100644
index 0000000..49a62da
--- /dev/null
+++ b/core/fxcrt/cfx_widestring.cpp
@@ -0,0 +1,1044 @@
+// 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 "core/fxcrt/cfx_widestring.h"
+
+#include <stddef.h>
+
+#include <algorithm>
+#include <cctype>
+
+#include "core/fxcrt/cfx_string_pool_template.h"
+#include "core/fxcrt/fx_basic.h"
+#include "core/fxcrt/fx_ext.h"
+#include "third_party/base/numerics/safe_math.h"
+#include "third_party/base/stl_util.h"
+
+template class CFX_StringDataTemplate<wchar_t>;
+template class CFX_StringCTemplate<wchar_t>;
+template class CFX_StringPoolTemplate<CFX_WideString>;
+template struct std::hash<CFX_WideString>;
+
+#define FORCE_ANSI 0x10000
+#define FORCE_UNICODE 0x20000
+#define FORCE_INT64 0x40000
+
+namespace {
+
+#ifndef NDEBUG
+bool IsValidCodePage(uint16_t codepage) {
+ switch (codepage) {
+ case 0:
+ case 932:
+ case 936:
+ case 949:
+ case 950:
+ return true;
+
+ default:
+ return false;
+ }
+}
+#endif
+
+const wchar_t* FX_wcsstr(const wchar_t* haystack,
+ int haystack_len,
+ const wchar_t* needle,
+ int needle_len) {
+ if (needle_len > haystack_len || needle_len == 0) {
+ return nullptr;
+ }
+ const wchar_t* 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;
+}
+
+FX_STRSIZE GuessSizeForVSWPrintf(const wchar_t* pFormat, va_list argList) {
+ FX_STRSIZE nMaxLen = 0;
+ for (const wchar_t* pStr = pFormat; *pStr != 0; pStr++) {
+ if (*pStr != '%' || *(pStr = pStr + 1) == '%') {
+ ++nMaxLen;
+ continue;
+ }
+ int nItemLen = 0;
+ int nWidth = 0;
+ for (; *pStr != 0; pStr++) {
+ if (*pStr == '#') {
+ nMaxLen += 2;
+ } else if (*pStr == '*') {
+ nWidth = va_arg(argList, int);
+ } else if (*pStr != '-' && *pStr != '+' && *pStr != '0' && *pStr != ' ') {
+ break;
+ }
+ }
+ if (nWidth == 0) {
+ nWidth = FXSYS_wtoi(pStr);
+ while (std::iswdigit(*pStr))
+ ++pStr;
+ }
+ if (nWidth < 0 || nWidth > 128 * 1024)
+ return -1;
+ int nPrecision = 0;
+ if (*pStr == '.') {
+ pStr++;
+ if (*pStr == '*') {
+ nPrecision = va_arg(argList, int);
+ pStr++;
+ } else {
+ nPrecision = FXSYS_wtoi(pStr);
+ while (std::iswdigit(*pStr))
+ ++pStr;
+ }
+ }
+ if (nPrecision < 0 || nPrecision > 128 * 1024)
+ return -1;
+ int nModifier = 0;
+ if (*pStr == L'I' && *(pStr + 1) == L'6' && *(pStr + 2) == L'4') {
+ pStr += 3;
+ nModifier = FORCE_INT64;
+ } else {
+ switch (*pStr) {
+ case 'h':
+ nModifier = FORCE_ANSI;
+ pStr++;
+ break;
+ case 'l':
+ nModifier = FORCE_UNICODE;
+ pStr++;
+ break;
+ case 'F':
+ case 'N':
+ case 'L':
+ pStr++;
+ break;
+ }
+ }
+ switch (*pStr | 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 wchar_t* pstrNextArg = va_arg(argList, const wchar_t*);
+ if (pstrNextArg) {
+ nItemLen = FXSYS_wcslen(pstrNextArg);
+ if (nItemLen < 1) {
+ nItemLen = 1;
+ }
+ } else {
+ nItemLen = 6;
+ }
+ } break;
+ case 'S': {
+ const char* pstrNextArg = va_arg(argList, const 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 char* pstrNextArg = va_arg(argList, const char*);
+ if (pstrNextArg) {
+ nItemLen = FXSYS_strlen(pstrNextArg);
+ if (nItemLen < 1) {
+ nItemLen = 1;
+ }
+ } else {
+ nItemLen = 6;
+ }
+ } break;
+ case 's' | FORCE_UNICODE:
+ case 'S' | FORCE_UNICODE: {
+ const wchar_t* pstrNextArg = va_arg(argList, wchar_t*);
+ 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 (*pStr) {
+ 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;
+ }
+ nMaxLen += 32; // Fudge factor.
+ return nMaxLen;
+}
+
+} // namespace
+
+static_assert(sizeof(CFX_WideString) <= sizeof(wchar_t*),
+ "Strings must not require more space than pointers");
+
+CFX_WideString::CFX_WideString() {}
+
+CFX_WideString::CFX_WideString(const CFX_WideString& other)
+ : m_pData(other.m_pData) {}
+
+CFX_WideString::CFX_WideString(CFX_WideString&& other) noexcept {
+ m_pData.Swap(other.m_pData);
+}
+
+CFX_WideString::CFX_WideString(const wchar_t* pStr, FX_STRSIZE nLen) {
+ if (nLen < 0)
+ nLen = pStr ? FXSYS_wcslen(pStr) : 0;
+
+ if (nLen)
+ m_pData.Reset(StringData::Create(pStr, nLen));
+}
+
+CFX_WideString::CFX_WideString(wchar_t ch) {
+ m_pData.Reset(StringData::Create(1));
+ m_pData->m_String[0] = ch;
+}
+
+CFX_WideString::CFX_WideString(const wchar_t* ptr)
+ : CFX_WideString(ptr, ptr ? FXSYS_wcslen(ptr) : 0) {}
+
+CFX_WideString::CFX_WideString(const CFX_WideStringC& stringSrc) {
+ if (!stringSrc.IsEmpty()) {
+ m_pData.Reset(StringData::Create(stringSrc.c_str(), stringSrc.GetLength()));
+ }
+}
+
+CFX_WideString::CFX_WideString(const CFX_WideStringC& str1,
+ const CFX_WideStringC& 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_WideString::~CFX_WideString() {}
+
+const CFX_WideString& CFX_WideString::operator=(const wchar_t* pStr) {
+ if (!pStr || !pStr[0])
+ clear();
+ else
+ AssignCopy(pStr, FXSYS_wcslen(pStr));
+
+ return *this;
+}
+
+const CFX_WideString& CFX_WideString::operator=(
+ const CFX_WideStringC& stringSrc) {
+ if (stringSrc.IsEmpty())
+ clear();
+ else
+ AssignCopy(stringSrc.c_str(), stringSrc.GetLength());
+
+ return *this;
+}
+
+const CFX_WideString& CFX_WideString::operator=(
+ const CFX_WideString& stringSrc) {
+ if (m_pData != stringSrc.m_pData)
+ m_pData = stringSrc.m_pData;
+
+ return *this;
+}
+
+const CFX_WideString& CFX_WideString::operator+=(const wchar_t* pStr) {
+ if (pStr)
+ Concat(pStr, FXSYS_wcslen(pStr));
+
+ return *this;
+}
+
+const CFX_WideString& CFX_WideString::operator+=(wchar_t ch) {
+ Concat(&ch, 1);
+ return *this;
+}
+
+const CFX_WideString& CFX_WideString::operator+=(const CFX_WideString& str) {
+ if (str.m_pData)
+ Concat(str.m_pData->m_String, str.m_pData->m_nDataLength);
+
+ return *this;
+}
+
+const CFX_WideString& CFX_WideString::operator+=(const CFX_WideStringC& str) {
+ if (!str.IsEmpty())
+ Concat(str.c_str(), str.GetLength());
+
+ return *this;
+}
+
+bool CFX_WideString::operator==(const wchar_t* ptr) const {
+ if (!m_pData)
+ return !ptr || !ptr[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::operator==(const CFX_WideStringC& str) const {
+ if (!m_pData)
+ return str.IsEmpty();
+
+ return m_pData->m_nDataLength == str.GetLength() &&
+ wmemcmp(m_pData->m_String, str.c_str(), str.GetLength()) == 0;
+}
+
+bool CFX_WideString::operator==(const CFX_WideString& 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 &&
+ wmemcmp(other.m_pData->m_String, m_pData->m_String,
+ m_pData->m_nDataLength) == 0;
+}
+
+bool CFX_WideString::operator<(const CFX_WideString& str) const {
+ if (m_pData == str.m_pData)
+ return false;
+
+ int result =
+ wmemcmp(c_str(), str.c_str(), std::min(GetLength(), str.GetLength()));
+ return result < 0 || (result == 0 && GetLength() < str.GetLength());
+}
+
+void CFX_WideString::AssignCopy(const wchar_t* pSrcData, FX_STRSIZE nSrcLen) {
+ AllocBeforeWrite(nSrcLen);
+ m_pData->CopyContents(pSrcData, nSrcLen);
+ m_pData->m_nDataLength = nSrcLen;
+}
+
+void CFX_WideString::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_WideString::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_WideString::ReleaseBuffer(FX_STRSIZE nNewLength) {
+ if (!m_pData)
+ return;
+
+ if (nNewLength == -1)
+ nNewLength = FXSYS_wcslen(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_WideString preserve(*this);
+ ReallocBeforeWrite(nNewLength);
+ }
+}
+
+void CFX_WideString::Reserve(FX_STRSIZE len) {
+ GetBuffer(len);
+}
+
+wchar_t* CFX_WideString::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_WideString::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;
+ wmemmove(m_pData->m_String + nIndex, m_pData->m_String + mLength,
+ nCharsToCopy);
+ m_pData->m_nDataLength = nOldLength - nCount;
+ }
+ return m_pData->m_nDataLength;
+}
+
+void CFX_WideString::Concat(const wchar_t* 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_WideString::UTF8Encode() const {
+ return FX_UTF8Encode(AsStringC());
+}
+
+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;
+ 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;
+}
+
+CFX_WideString CFX_WideString::Mid(FX_STRSIZE nFirst) const {
+ if (!m_pData)
+ return CFX_WideString();
+
+ 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();
+
+ nFirst = pdfium::clamp(nFirst, 0, m_pData->m_nDataLength);
+ nCount = pdfium::clamp(nCount, 0, m_pData->m_nDataLength - nFirst);
+ if (nCount == 0)
+ return CFX_WideString();
+
+ if (nFirst == 0 && nCount == m_pData->m_nDataLength)
+ return *this;
+
+ CFX_WideString dest;
+ AllocCopy(dest, nCount, nFirst);
+ return dest;
+}
+
+void CFX_WideString::AllocCopy(CFX_WideString& 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);
+}
+
+bool CFX_WideString::TryVSWPrintf(FX_STRSIZE size,
+ const wchar_t* pFormat,
+ va_list argList) {
+ GetBuffer(size);
+ if (!m_pData)
+ return true;
+
+ // In the following two calls, there's always space in the buffer for
+ // a terminating NUL that's not included in nMaxLen.
+ // For vswprintf(), MSAN won't untaint the buffer on a truncated write's
+ // -1 return code even though the buffer is written. Probably just as well
+ // not to trust the vendor's implementation to write anything anyways.
+ // See https://crbug.com/705912.
+ memset(m_pData->m_String, 0, (size + 1) * sizeof(wchar_t));
+ int ret = vswprintf(m_pData->m_String, size + 1, pFormat, argList);
+ ReleaseBuffer();
+ return ret >= 0 || m_pData->m_String[size - 1] == 0;
+}
+
+void CFX_WideString::FormatV(const wchar_t* pFormat, va_list argList) {
+ va_list argListCopy;
+ FX_VA_COPY(argListCopy, argList);
+ FX_STRSIZE nMaxLen = vswprintf(nullptr, 0, pFormat, argListCopy);
+ va_end(argListCopy);
+ if (nMaxLen <= 0) {
+ nMaxLen = GuessSizeForVSWPrintf(pFormat, argListCopy);
+ if (nMaxLen <= 0)
+ return;
+ }
+ while (nMaxLen < 32 * 1024) {
+ FX_VA_COPY(argListCopy, argList);
+ bool bRetryPointless = TryVSWPrintf(nMaxLen, pFormat, argListCopy);
+ va_end(argListCopy);
+ if (bRetryPointless)
+ break;
+ nMaxLen *= 2;
+ }
+}
+
+void CFX_WideString::Format(const wchar_t* pFormat, ...) {
+ va_list argList;
+ va_start(argList, pFormat);
+ FormatV(pFormat, argList);
+ va_end(argList);
+}
+
+FX_STRSIZE CFX_WideString::Insert(FX_STRSIZE nIndex, wchar_t ch) {
+ FX_STRSIZE nNewLength = m_pData ? m_pData->m_nDataLength : 0;
+ nIndex = std::max(nIndex, 0);
+ nIndex = std::min(nIndex, nNewLength);
+ nNewLength++;
+
+ ReallocBeforeWrite(nNewLength);
+ wmemmove(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_WideString CFX_WideString::Right(FX_STRSIZE nCount) const {
+ if (!m_pData)
+ return CFX_WideString();
+
+ nCount = std::max(nCount, 0);
+ if (nCount >= m_pData->m_nDataLength)
+ return *this;
+
+ CFX_WideString dest;
+ AllocCopy(dest, nCount, m_pData->m_nDataLength - nCount);
+ return dest;
+}
+
+CFX_WideString CFX_WideString::Left(FX_STRSIZE nCount) const {
+ if (!m_pData)
+ return CFX_WideString();
+
+ nCount = std::max(nCount, 0);
+ if (nCount >= m_pData->m_nDataLength)
+ return *this;
+
+ CFX_WideString dest;
+ AllocCopy(dest, nCount, 0);
+ return dest;
+}
+
+FX_STRSIZE CFX_WideString::Find(wchar_t ch, FX_STRSIZE nStart) const {
+ if (!m_pData)
+ return -1;
+
+ if (nStart < 0 || nStart >= m_pData->m_nDataLength)
+ return -1;
+
+ const wchar_t* pStr =
+ wmemchr(m_pData->m_String + nStart, ch, m_pData->m_nDataLength - nStart);
+ return pStr ? pStr - m_pData->m_String : -1;
+}
+
+FX_STRSIZE CFX_WideString::Find(const CFX_WideStringC& pSub,
+ FX_STRSIZE nStart) const {
+ if (!m_pData)
+ return -1;
+
+ FX_STRSIZE nLength = m_pData->m_nDataLength;
+ if (nStart > nLength)
+ return -1;
+
+ const wchar_t* pStr =
+ FX_wcsstr(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_WideString::MakeLower() {
+ if (!m_pData)
+ return;
+
+ ReallocBeforeWrite(m_pData->m_nDataLength);
+ FXSYS_wcslwr(m_pData->m_String);
+}
+
+void CFX_WideString::MakeUpper() {
+ if (!m_pData)
+ return;
+
+ ReallocBeforeWrite(m_pData->m_nDataLength);
+ FXSYS_wcsupr(m_pData->m_String);
+}
+
+FX_STRSIZE CFX_WideString::Remove(wchar_t chRemove) {
+ if (!m_pData || m_pData->m_nDataLength < 1)
+ return 0;
+
+ wchar_t* pstrSource = m_pData->m_String;
+ wchar_t* 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;
+
+ wchar_t* 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_WideString::Replace(const CFX_WideStringC& pOld,
+ const CFX_WideStringC& pNew) {
+ if (!m_pData || pOld.IsEmpty())
+ return 0;
+
+ FX_STRSIZE nSourceLen = pOld.GetLength();
+ FX_STRSIZE nReplacementLen = pNew.GetLength();
+ FX_STRSIZE nCount = 0;
+ const wchar_t* pStart = m_pData->m_String;
+ wchar_t* pEnd = m_pData->m_String + m_pData->m_nDataLength;
+ while (1) {
+ const wchar_t* pTarget = FX_wcsstr(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;
+ wchar_t* pDest = pNewData->m_String;
+ for (FX_STRSIZE i = 0; i < nCount; i++) {
+ const wchar_t* pTarget = FX_wcsstr(pStart, (FX_STRSIZE)(pEnd - pStart),
+ pOld.c_str(), nSourceLen);
+ wmemcpy(pDest, pStart, pTarget - pStart);
+ pDest += pTarget - pStart;
+ wmemcpy(pDest, pNew.c_str(), pNew.GetLength());
+ pDest += pNew.GetLength();
+ pStart = pTarget + nSourceLen;
+ }
+ wmemcpy(pDest, pStart, pEnd - pStart);
+ m_pData.Swap(pNewData);
+ return nCount;
+}
+
+void CFX_WideString::SetAt(FX_STRSIZE nIndex, wchar_t 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;
+}
+
+// static
+CFX_WideString CFX_WideString::FromLocal(const CFX_ByteStringC& str) {
+ return FromCodePage(str, 0);
+}
+
+// static
+CFX_WideString CFX_WideString::FromCodePage(const CFX_ByteStringC& str,
+ uint16_t codepage) {
+ return CFX_CharMap::GetWideString(codepage, str);
+}
+
+// static
+CFX_WideString CFX_WideString::FromUTF8(const CFX_ByteStringC& str) {
+ if (str.IsEmpty())
+ return CFX_WideString();
+
+ CFX_UTF8Decoder decoder;
+ for (FX_STRSIZE i = 0; i < str.GetLength(); i++)
+ decoder.Input(str[i]);
+
+ return CFX_WideString(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;
+ wchar_t* buf = result.GetBuffer(wlen);
+ for (int i = 0; i < wlen; i++) {
+ buf[i] = wstr[i];
+ }
+ result.ReleaseBuffer(wlen);
+ return result;
+}
+
+int CFX_WideString::Compare(const wchar_t* lpsz) const {
+ if (m_pData)
+ return FXSYS_wcscmp(m_pData->m_String, lpsz);
+ return (!lpsz || lpsz[0] == 0) ? 0 : -1;
+}
+
+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;
+}
+
+int CFX_WideString::CompareNoCase(const wchar_t* lpsz) const {
+ if (!m_pData) {
+ return (!lpsz || lpsz[0] == 0) ? 0 : -1;
+ }
+ return FXSYS_wcsicmp(m_pData->m_String, lpsz);
+}
+
+FX_STRSIZE CFX_WideString::WStringLength(const unsigned short* str) {
+ FX_STRSIZE len = 0;
+ if (str)
+ while (str[len])
+ len++;
+ return len;
+}
+
+void CFX_WideString::TrimRight(const CFX_WideStringC& pTargets) {
+ if (IsEmpty() || pTargets.IsEmpty())
+ return;
+
+ FX_STRSIZE pos = GetLength();
+ while (pos && pTargets.Find(m_pData->m_String[pos - 1]) != -1)
+ 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_WideString::TrimRight(wchar_t chTarget) {
+ wchar_t str[2] = {chTarget, 0};
+ TrimRight(str);
+}
+
+void CFX_WideString::TrimRight() {
+ TrimRight(L"\x09\x0a\x0b\x0c\x0d\x20");
+}
+
+void CFX_WideString::TrimLeft(const CFX_WideStringC& 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.CharAt(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(wchar_t));
+ m_pData->m_nDataLength = nDataLength;
+ }
+}
+
+void CFX_WideString::TrimLeft(wchar_t chTarget) {
+ wchar_t str[2] = {chTarget, 0};
+ TrimLeft(str);
+}
+
+void CFX_WideString::TrimLeft() {
+ TrimLeft(L"\x09\x0a\x0b\x0c\x0d\x20");
+}
+float FX_wtof(const wchar_t* str, int len) {
+ if (len == 0) {
+ return 0.0;
+ }
+ int cc = 0;
+ 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++;
+ }
+ float fraction = 0;
+ if (str[cc] == '.') {
+ cc++;
+ float scale = 0.1f;
+ while (cc < len) {
+ fraction += scale * FXSYS_toDecimalDigit(str[cc]);
+ scale *= 0.1f;
+ cc++;
+ }
+ }
+ fraction += (float)integer;
+ return bNegative ? -fraction : fraction;
+}
+
+int CFX_WideString::GetInteger() const {
+ return m_pData ? FXSYS_wtoi(m_pData->m_String) : 0;
+}
+
+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(uint16_t codepage,
+ const CFX_WideStringC& wstr) {
+ 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) {
+ 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(uint16_t codepage,
+ const CFX_ByteStringC& bstr) {
+ ASSERT(IsValidCodePage(codepage));
+ int src_len = bstr.GetLength();
+ int dest_len =
+ FXSYS_MultiByteToWideChar(codepage, 0, bstr.c_str(), src_len, nullptr, 0);
+ CFX_WideString wstr;
+ if (dest_len) {
+ wchar_t* dest_buf = wstr.GetBuffer(dest_len);
+ FXSYS_MultiByteToWideChar(codepage, 0, bstr.c_str(), src_len, dest_buf,
+ dest_len);
+ wstr.ReleaseBuffer(dest_len);
+ }
+ return wstr;
+}
