// Copyright 2014 PDFium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#ifndef CORE_FXCRT_INCLUDE_FX_EXT_H_
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#define CORE_FXCRT_INCLUDE_FX_EXT_H_
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#include <cctype>
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#include <cwctype>
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#include "core/fxcrt/include/fx_basic.h"
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#define FX_INVALID_OFFSET static_cast<uint32_t>(-1)
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// TODO(thestig) Using unique_ptr with ReleaseDeleter is still not ideal.
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// Come up or wait for something better. This appears in this file rather
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// than fx_stream.h due to include ordering restrictions.
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using ScopedFileStream =
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std::unique_ptr<IFX_FileStream, ReleaseDeleter<IFX_FileStream>>;
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FX_FLOAT FXSYS_tan(FX_FLOAT a);
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FX_FLOAT FXSYS_logb(FX_FLOAT b, FX_FLOAT x);
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FX_FLOAT FXSYS_strtof(const FX_CHAR* pcsStr,
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int32_t iLength = -1,
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int32_t* pUsedLen = nullptr);
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FX_FLOAT FXSYS_wcstof(const FX_WCHAR* pwsStr,
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int32_t iLength = -1,
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int32_t* pUsedLen = nullptr);
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FX_WCHAR* FXSYS_wcsncpy(FX_WCHAR* dstStr, const FX_WCHAR* srcStr, size_t count);
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int32_t FXSYS_wcsnicmp(const FX_WCHAR* s1, const FX_WCHAR* s2, size_t count);
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int32_t FXSYS_strnicmp(const FX_CHAR* s1, const FX_CHAR* s2, size_t count);
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inline bool FXSYS_islower(int32_t ch) {
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return ch >= 'a' && ch <= 'z';
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}
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inline bool FXSYS_isupper(int32_t ch) {
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return ch >= 'A' && ch <= 'Z';
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}
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inline int32_t FXSYS_tolower(int32_t ch) {
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return ch < 'A' || ch > 'Z' ? ch : (ch + 0x20);
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}
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inline int32_t FXSYS_toupper(int32_t ch) {
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return ch < 'a' || ch > 'z' ? ch : (ch - 0x20);
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}
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inline bool FXSYS_iswalpha(wchar_t wch) {
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return (wch >= L'A' && wch <= L'Z') || (wch >= L'a' && wch <= L'z');
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}
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inline bool FXSYS_iswdigit(wchar_t wch) {
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return wch >= L'0' && wch <= L'9';
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}
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inline bool FXSYS_iswalnum(wchar_t wch) {
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return FXSYS_iswalpha(wch) || FXSYS_iswdigit(wch);
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}
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inline bool FXSYS_iswspace(FX_WCHAR c) {
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return (c == 0x20) || (c == 0x0d) || (c == 0x0a) || (c == 0x09);
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}
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inline int FXSYS_toHexDigit(const FX_CHAR c) {
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if (!std::isxdigit(c))
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return 0;
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char upchar = std::toupper(c);
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return upchar > '9' ? upchar - 'A' + 10 : upchar - '0';
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}
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inline bool FXSYS_isDecimalDigit(const FX_CHAR c) {
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return !!std::isdigit(c);
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}
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inline bool FXSYS_isDecimalDigit(const FX_WCHAR c) {
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return !!std::iswdigit(c);
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}
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inline int FXSYS_toDecimalDigit(const FX_CHAR c) {
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return std::isdigit(c) ? c - '0' : 0;
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}
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inline int FXSYS_toDecimalDigit(const FX_WCHAR c) {
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return std::iswdigit(c) ? c - L'0' : 0;
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}
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FX_FLOAT FXSYS_FractionalScale(size_t scale_factor, int value);
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int FXSYS_FractionalScaleCount();
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uint32_t FX_HashCode_GetA(const CFX_ByteStringC& str, bool bIgnoreCase);
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uint32_t FX_HashCode_GetW(const CFX_WideStringC& Str, bool bIgnoreCase);
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void* FX_Random_MT_Start(uint32_t dwSeed);
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uint32_t FX_Random_MT_Generate(void* pContext);
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void FX_Random_MT_Close(void* pContext);
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void FX_Random_GenerateBase(uint32_t* pBuffer, int32_t iCount);
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void FX_Random_GenerateMT(uint32_t* pBuffer, int32_t iCount);
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void FX_Random_GenerateCrypto(uint32_t* pBuffer, int32_t iCount);
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#ifdef PDF_ENABLE_XFA
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typedef struct FX_GUID {
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uint32_t data1;
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uint16_t data2;
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uint16_t data3;
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uint8_t data4[8];
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} FX_GUID, *FX_LPGUID;
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typedef FX_GUID const* FX_LPCGUID;
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void FX_GUID_CreateV4(FX_LPGUID pGUID);
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void FX_GUID_ToString(FX_LPCGUID pGUID,
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CFX_ByteString& bsStr,
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FX_BOOL bSeparator = TRUE);
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#endif // PDF_ENABLE_XFA
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template <class baseType>
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class CFX_SSortTemplate {
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public:
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void ShellSort(baseType* pArray, int32_t iCount) {
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ASSERT(pArray && iCount > 0);
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int32_t i, j, gap;
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baseType v1, v2;
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gap = iCount >> 1;
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while (gap > 0) {
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for (i = gap; i < iCount; i++) {
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j = i - gap;
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v1 = pArray[i];
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while (j > -1 && (v2 = pArray[j]) > v1) {
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pArray[j + gap] = v2;
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j -= gap;
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}
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pArray[j + gap] = v1;
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}
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gap >>= 1;
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}
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}
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};
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#endif // CORE_FXCRT_INCLUDE_FX_EXT_H_
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