139 lines
3.5 KiB
C++
139 lines
3.5 KiB
C++
// 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_FX_EXTENSION_H_
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#define CORE_FXCRT_FX_EXTENSION_H_
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#include <time.h>
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#include <cctype>
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#include <cmath>
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#include <cwctype>
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#include <memory>
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#include "core/fxcrt/fx_string.h"
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#if defined(USE_SYSTEM_ICUUC)
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#include <unicode/uchar.h>
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#else
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#include "third_party/icu/source/common/unicode/uchar.h"
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#endif
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#define FX_INVALID_OFFSET static_cast<uint32_t>(-1)
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#ifdef PDF_ENABLE_XFA
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#define FX_IsOdd(a) ((a)&1)
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#endif // PDF_ENABLE_XFA
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float FXSYS_wcstof(const wchar_t* pwsStr, int32_t iLength, int32_t* pUsedLen);
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wchar_t* FXSYS_wcsncpy(wchar_t* dstStr, const wchar_t* srcStr, size_t count);
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int32_t FXSYS_wcsnicmp(const wchar_t* s1, const wchar_t* s2, size_t count);
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inline bool FXSYS_iswlower(int32_t c) {
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return u_islower(c);
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}
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inline bool FXSYS_iswupper(int32_t c) {
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return u_isupper(c);
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}
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inline int32_t FXSYS_towlower(wchar_t c) {
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return u_tolower(c);
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}
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inline int32_t FXSYS_towupper(wchar_t c) {
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return u_toupper(c);
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}
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inline char FXSYS_ToUpperASCII(char c) {
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return (c >= 'a' && c <= 'z') ? (c + ('A' - 'a')) : c;
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}
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inline bool FXSYS_iswalpha(wchar_t c) {
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return u_isalpha(c);
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}
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inline bool FXSYS_iswalnum(wchar_t c) {
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return u_isalnum(c);
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}
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inline bool FXSYS_iswspace(wchar_t c) {
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return u_isspace(c);
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}
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inline bool FXSYS_IsOctalDigit(char c) {
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return c >= '0' && c <= '7';
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}
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inline bool FXSYS_IsHexDigit(char c) {
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return !((c & 0x80) || !std::isxdigit(c));
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}
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inline bool FXSYS_IsWideHexDigit(wchar_t c) {
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return !((c & 0xFFFFFF80) || !std::isxdigit(c));
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}
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inline int FXSYS_HexCharToInt(char c) {
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if (!FXSYS_IsHexDigit(c))
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return 0;
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char upchar = FXSYS_ToUpperASCII(c);
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return upchar > '9' ? upchar - 'A' + 10 : upchar - '0';
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}
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inline int FXSYS_WideHexCharToInt(wchar_t c) {
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if (!FXSYS_IsWideHexDigit(c))
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return 0;
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char upchar = std::toupper(static_cast<char>(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(char c) {
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return !((c & 0x80) || !std::isdigit(c));
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}
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inline bool FXSYS_IsDecimalDigit(wchar_t c) {
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return !((c & 0xFFFFFF80) || !std::iswdigit(c));
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}
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inline int FXSYS_DecimalCharToInt(char c) {
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return FXSYS_IsDecimalDigit(c) ? c - '0' : 0;
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}
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inline int FXSYS_DecimalCharToInt(wchar_t c) {
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return FXSYS_IsDecimalDigit(c) ? c - L'0' : 0;
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}
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void FXSYS_IntToTwoHexChars(uint8_t n, char* buf);
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void FXSYS_IntToFourHexChars(uint16_t n, char* buf);
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size_t FXSYS_ToUTF16BE(uint32_t unicode, char* buf);
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// Strict order over floating types where NaNs may be present.
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template <typename T>
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bool FXSYS_SafeEQ(const T& lhs, const T& rhs) {
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return (std::isnan(lhs) && std::isnan(rhs)) ||
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(!std::isnan(lhs) && !std::isnan(rhs) && lhs == rhs);
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}
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template <typename T>
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bool FXSYS_SafeLT(const T& lhs, const T& rhs) {
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if (std::isnan(lhs) && std::isnan(rhs))
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return false;
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if (std::isnan(lhs) || std::isnan(rhs))
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return std::isnan(lhs) < std::isnan(rhs);
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return lhs < rhs;
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}
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// Override time/localtime functions for test consistency.
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void FXSYS_SetTimeFunction(time_t (*func)());
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void FXSYS_SetLocaltimeFunction(struct tm* (*func)(const time_t*));
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// Replacements for time/localtime that respect overrides.
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time_t FXSYS_time(time_t* tloc);
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struct tm* FXSYS_localtime(const time_t* tp);
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#endif // CORE_FXCRT_FX_EXTENSION_H_
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