// 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 #ifndef CORE_FXCRT_FX_EXTENSION_H_ #define CORE_FXCRT_FX_EXTENSION_H_ #include <cctype> #include <cwctype> #include <memory> #include "core/fxcrt/fx_string.h" #define FX_INVALID_OFFSET static_cast<uint32_t>(-1) #ifdef PDF_ENABLE_XFA #define FX_IsOdd(a) ((a)&1) #endif // PDF_ENABLE_XFA float FXSYS_wcstof(const wchar_t* pwsStr, int32_t iLength = -1, int32_t* pUsedLen = nullptr); wchar_t* FXSYS_wcsncpy(wchar_t* dstStr, const wchar_t* srcStr, size_t count); int32_t FXSYS_wcsnicmp(const wchar_t* s1, const wchar_t* s2, size_t count); inline bool FXSYS_islower(int32_t ch) { return ch >= 'a' && ch <= 'z'; } inline bool FXSYS_isupper(int32_t ch) { return ch >= 'A' && ch <= 'Z'; } inline int32_t FXSYS_tolower(int32_t ch) { return ch < 'A' || ch > 'Z' ? ch : (ch + 0x20); } inline int32_t FXSYS_toupper(int32_t ch) { return ch < 'a' || ch > 'z' ? ch : (ch - 0x20); } inline bool FXSYS_iswalpha(wchar_t wch) { return FXSYS_isupper(wch) || FXSYS_islower(wch); } inline bool FXSYS_iswalnum(wchar_t wch) { return FXSYS_iswalpha(wch) || std::iswdigit(wch); } inline bool FXSYS_iswspace(wchar_t c) { return (c == 0x20) || (c == 0x0d) || (c == 0x0a) || (c == 0x09); } inline bool FXSYS_isHexDigit(const char c) { return !((c & 0x80) || !std::isxdigit(c)); } inline int FXSYS_HexCharToInt(const char c) { if (!FXSYS_isHexDigit(c)) return 0; char upchar = std::toupper(c); return upchar > '9' ? upchar - 'A' + 10 : upchar - '0'; } inline bool FXSYS_isDecimalDigit(const char c) { return !((c & 0x80) || !std::isdigit(c)); } inline bool FXSYS_isDecimalDigit(const wchar_t c) { return !!std::iswdigit(c); } inline int FXSYS_DecimalCharToInt(const char c) { return FXSYS_isDecimalDigit(c) ? c - '0' : 0; } inline int FXSYS_DecimalCharToInt(const wchar_t c) { return std::iswdigit(c) ? c - L'0' : 0; } void FXSYS_IntToTwoHexChars(uint8_t c, char* buf); void FXSYS_IntToFourHexChars(uint16_t c, char* buf); size_t FXSYS_ToUTF16BE(uint32_t unicode, char* buf); uint32_t GetBits32(const uint8_t* pData, int bitpos, int nbits); #endif // CORE_FXCRT_FX_EXTENSION_H_