| // Copyright 2014 The PDFium Authors |
| // 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 <ctype.h> |
| #include <math.h> |
| #include <time.h> |
| #include <wctype.h> |
| |
| #include "build/build_config.h" |
| |
| #if defined(USE_SYSTEM_ICUUC) |
| #include <unicode/uchar.h> |
| #else |
| #include "third_party/icu/source/common/unicode/uchar.h" |
| #endif |
| |
| #define FX_INVALID_OFFSET static_cast<uint32_t>(-1) |
| |
| #define FX_IsOdd(a) ((a)&1) |
| |
| float FXSYS_wcstof(const wchar_t* pwsStr, size_t nLength, size_t* pUsedLen); |
| 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_iswlower(int32_t c) { |
| return u_islower(c); |
| } |
| |
| inline bool FXSYS_iswupper(int32_t c) { |
| return u_isupper(c); |
| } |
| |
| inline int32_t FXSYS_towlower(wchar_t c) { |
| return u_tolower(c); |
| } |
| |
| inline int32_t FXSYS_towupper(wchar_t c) { |
| return u_toupper(c); |
| } |
| |
| inline bool FXSYS_IsLowerASCII(int32_t c) { |
| return c >= 'a' && c <= 'z'; |
| } |
| |
| inline bool FXSYS_IsUpperASCII(int32_t c) { |
| return c >= 'A' && c <= 'Z'; |
| } |
| |
| inline char FXSYS_ToUpperASCII(char c) { |
| return FXSYS_IsLowerASCII(c) ? (c + ('A' - 'a')) : c; |
| } |
| |
| inline bool FXSYS_iswalpha(wchar_t c) { |
| return u_isalpha(c); |
| } |
| |
| inline bool FXSYS_iswalnum(wchar_t c) { |
| return u_isalnum(c); |
| } |
| |
| inline bool FXSYS_iswspace(wchar_t c) { |
| return u_isspace(c); |
| } |
| |
| inline bool FXSYS_IsOctalDigit(char c) { |
| return c >= '0' && c <= '7'; |
| } |
| |
| inline bool FXSYS_IsHexDigit(char c) { |
| return !((c & 0x80) || !isxdigit(c)); |
| } |
| |
| inline bool FXSYS_IsWideHexDigit(wchar_t c) { |
| return !((c & 0xFFFFFF80) || !isxdigit(c)); |
| } |
| |
| inline int FXSYS_HexCharToInt(char c) { |
| if (!FXSYS_IsHexDigit(c)) |
| return 0; |
| char upchar = FXSYS_ToUpperASCII(c); |
| return upchar > '9' ? upchar - 'A' + 10 : upchar - '0'; |
| } |
| |
| inline int FXSYS_WideHexCharToInt(wchar_t c) { |
| if (!FXSYS_IsWideHexDigit(c)) |
| return 0; |
| char upchar = toupper(static_cast<char>(c)); |
| return upchar > '9' ? upchar - 'A' + 10 : upchar - '0'; |
| } |
| |
| inline bool FXSYS_IsDecimalDigit(char c) { |
| return !((c & 0x80) || !isdigit(c)); |
| } |
| |
| inline bool FXSYS_IsDecimalDigit(wchar_t c) { |
| return !((c & 0xFFFFFF80) || !iswdigit(c)); |
| } |
| |
| inline int FXSYS_DecimalCharToInt(char c) { |
| return FXSYS_IsDecimalDigit(c) ? c - '0' : 0; |
| } |
| |
| inline int FXSYS_DecimalCharToInt(wchar_t c) { |
| return FXSYS_IsDecimalDigit(c) ? c - L'0' : 0; |
| } |
| |
| void FXSYS_IntToTwoHexChars(uint8_t n, char* buf); |
| void FXSYS_IntToFourHexChars(uint16_t n, char* buf); |
| |
| size_t FXSYS_ToUTF16BE(uint32_t unicode, char* buf); |
| |
| // Strict order over floating types where NaNs may be present. |
| // All NaNs are treated as equal to each other and greater than infinity. |
| template <typename T> |
| bool FXSYS_SafeEQ(const T& lhs, const T& rhs) { |
| return (isnan(lhs) && isnan(rhs)) || |
| (!isnan(lhs) && !isnan(rhs) && lhs == rhs); |
| } |
| |
| template <typename T> |
| bool FXSYS_SafeLT(const T& lhs, const T& rhs) { |
| if (isnan(lhs) && isnan(rhs)) |
| return false; |
| if (isnan(lhs) || isnan(rhs)) |
| return isnan(lhs) < isnan(rhs); |
| return lhs < rhs; |
| } |
| |
| // Override time/localtime functions for test consistency. |
| void FXSYS_SetTimeFunction(time_t (*func)()); |
| void FXSYS_SetLocaltimeFunction(struct tm* (*func)(const time_t*)); |
| |
| // Replacements for time/localtime that respect overrides. |
| time_t FXSYS_time(time_t* tloc); |
| struct tm* FXSYS_localtime(const time_t* tp); |
| |
| #endif // CORE_FXCRT_FX_EXTENSION_H_ |