Move core/fxcrt/include to core/fxcrt

core/fxcrt/include/fx_system.h

-// 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_INCLUDE_FX_SYSTEM_H_
-#define CORE_FXCRT_INCLUDE_FX_SYSTEM_H_
-
-#include <assert.h>
-#include <math.h>
-#include <stdarg.h>
-#include <stddef.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <wchar.h>
-
-// _FX_OS_ values:
-#define _FX_WIN32_DESKTOP_ 1
-#define _FX_WIN64_DESKTOP_ 2
-#define _FX_LINUX_DESKTOP_ 4
-#define _FX_MACOSX_ 7
-#define _FX_ANDROID_ 12
-
-// _FXM_PLATFORM_ values;
-#define _FXM_PLATFORM_WINDOWS_ 1  // _FX_WIN32_DESKTOP_ or _FX_WIN64_DESKTOP_.
-#define _FXM_PLATFORM_LINUX_ 2    // _FX_LINUX_DESKTOP_ always.
-#define _FXM_PLATFORM_APPLE_ 3    // _FX_MACOSX_ always.
-#define _FXM_PLATFORM_ANDROID_ 4  // _FX_ANDROID_ always.
-
-#ifndef _FX_OS_
-#if defined(__ANDROID__)
-#define _FX_OS_ _FX_ANDROID_
-#define _FXM_PLATFORM_ _FXM_PLATFORM_ANDROID_
-#elif defined(_WIN32)
-#define _FX_OS_ _FX_WIN32_DESKTOP_
-#define _FXM_PLATFORM_ _FXM_PLATFORM_WINDOWS_
-#elif defined(_WIN64)
-#define _FX_OS_ _FX_WIN64_DESKTOP_
-#define _FXM_PLATFORM_ _FXM_PLATFORM_WINDOWS_
-#elif defined(__linux__)
-#define _FX_OS_ _FX_LINUX_DESKTOP_
-#define _FXM_PLATFORM_ _FXM_PLATFORM_LINUX_
-#elif defined(__APPLE__)
-#define _FX_OS_ _FX_MACOSX_
-#define _FXM_PLATFORM_ _FXM_PLATFORM_APPLE_
-#endif
-#endif  // _FX_OS_
-
-#if !defined(_FX_OS_) || _FX_OS_ == 0
-#error Sorry, can not figure out target OS. Please specify _FX_OS_ macro.
-#endif
-
-#if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
-#include <windows.h>
-#include <sal.h>
-#endif
-
-#if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_
-#include <Carbon/Carbon.h>
-#include <libkern/OSAtomic.h>
-#endif
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-typedef void* FX_POSITION;  // Keep until fxcrt containers gone
-typedef float FX_FLOAT;     // Keep, allow upgrade to doubles.
-typedef double FX_DOUBLE;   // Keep, allow downgrade to floats.
-typedef int FX_BOOL;        // Keep, sadly not always 0 or 1.
-typedef char FX_CHAR;       // Keep, questionable signedness.
-typedef wchar_t FX_WCHAR;   // Keep, maybe bad platform wchars.
-
-#define IsFloatZero(f) ((f) < 0.0001 && (f) > -0.0001)
-#define IsFloatBigger(fa, fb) ((fa) > (fb) && !IsFloatZero((fa) - (fb)))
-#define IsFloatSmaller(fa, fb) ((fa) < (fb) && !IsFloatZero((fa) - (fb)))
-#define IsFloatEqual(fa, fb) IsFloatZero(fa - fb)
-
-// PDFium string sizes are limited to 2^31-1, and the value is signed to
-// allow -1 as a placeholder for "unknown".
-// TODO(palmer): it should be a |size_t|, or at least unsigned.
-typedef int FX_STRSIZE;
-
-#ifndef TRUE
-#define TRUE 1
-#endif
-
-#ifndef FALSE
-#define FALSE 0
-#endif
-
-#ifdef __cplusplus
-static_assert(TRUE == true, "true_needs_to_be_true");
-static_assert(FALSE == false, "false_needs_to_be_false");
-#endif
-
-#ifndef ASSERT
-#ifndef NDEBUG
-#define ASSERT assert
-#else
-#define ASSERT(a)
-#endif
-#endif
-
-#if defined(__clang__) || defined(__GNUC__)
-#define PDFIUM_IMMEDIATE_CRASH() __builtin_trap()
-#else
-#define PDFIUM_IMMEDIATE_CRASH() ((void)(*(volatile char*)0 = 0))
-#endif
-
-// M_PI not universally present on all platforms.
-#define FX_PI 3.1415926535897932384626433832795f
-#define FX_BEZIER 0.5522847498308f
-
-// NOTE: prevent use of the return value from snprintf() since some platforms
-// have different return values (e.g. windows _vsnprintf()), and provide
-// versions that always NUL-terminate.
-#if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_ && _MSC_VER < 1900
-void FXSYS_snprintf(char* str,
-                    size_t size,
-                    _Printf_format_string_ const char* fmt,
-                    ...);
-void FXSYS_vsnprintf(char* str, size_t size, const char* fmt, va_list ap);
-#else
-#define FXSYS_snprintf (void) snprintf
-#define FXSYS_vsnprintf (void) vsnprintf
-#endif
-
-#define FXSYS_sprintf DO_NOT_USE_SPRINTF_DIE_DIE_DIE
-#define FXSYS_vsprintf DO_NOT_USE_VSPRINTF_DIE_DIE_DIE
-#define FXSYS_strncmp strncmp
-#define FXSYS_strcmp strcmp
-#define FXSYS_strcpy strcpy
-#define FXSYS_strncpy strncpy
-#define FXSYS_strstr strstr
-#define FXSYS_FILE FILE
-#define FXSYS_fopen fopen
-#define FXSYS_fclose fclose
-#define FXSYS_SEEK_END SEEK_END
-#define FXSYS_SEEK_SET SEEK_SET
-#define FXSYS_fseek fseek
-#define FXSYS_ftell ftell
-#define FXSYS_fread fread
-#define FXSYS_fwrite fwrite
-#define FXSYS_fprintf fprintf
-#define FXSYS_fflush fflush
-
-#if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
-#ifdef _NATIVE_WCHAR_T_DEFINED
-#define FXSYS_wfopen(f, m) _wfopen((const wchar_t*)(f), (const wchar_t*)(m))
-#else
-#define FXSYS_wfopen _wfopen
-#endif
-#else
-FXSYS_FILE* FXSYS_wfopen(const FX_WCHAR* filename, const FX_WCHAR* mode);
-#endif  // _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
-
-#ifdef __cplusplus
-}  // extern "C"
-
-#include "third_party/base/numerics/safe_conversions.h"
-
-#define FXSYS_strlen(ptr) pdfium::base::checked_cast<FX_STRSIZE>(strlen(ptr))
-#define FXSYS_wcslen(ptr) pdfium::base::checked_cast<FX_STRSIZE>(wcslen(ptr))
-
-// Overloaded functions for C++ templates
-inline FX_STRSIZE FXSYS_len(const FX_CHAR* ptr) {
-  return FXSYS_strlen(ptr);
-}
-
-inline FX_STRSIZE FXSYS_len(const FX_WCHAR* ptr) {
-  return FXSYS_wcslen(ptr);
-}
-
-inline int FXSYS_cmp(const FX_CHAR* ptr1, const FX_CHAR* ptr2, size_t len) {
-  return memcmp(ptr1, ptr2, len);
-}
-
-inline int FXSYS_cmp(const FX_WCHAR* ptr1, const FX_WCHAR* ptr2, size_t len) {
-  return wmemcmp(ptr1, ptr2, len);
-}
-
-inline const FX_CHAR* FXSYS_chr(const FX_CHAR* ptr, FX_CHAR ch, size_t len) {
-  return reinterpret_cast<const FX_CHAR*>(memchr(ptr, ch, len));
-}
-
-inline const FX_WCHAR* FXSYS_chr(const FX_WCHAR* ptr, FX_WCHAR ch, size_t len) {
-  return wmemchr(ptr, ch, len);
-}
-
-extern "C" {
-#else
-#define FXSYS_strlen(ptr) ((FX_STRSIZE)strlen(ptr))
-#define FXSYS_wcslen(ptr) ((FX_STRSIZE)wcslen(ptr))
-#endif
-
-#define FXSYS_wcscmp wcscmp
-#define FXSYS_wcsstr wcsstr
-#define FXSYS_wcsncmp wcsncmp
-#define FXSYS_vswprintf vswprintf
-#define FXSYS_mbstowcs mbstowcs
-#define FXSYS_wcstombs wcstombs
-#define FXSYS_memcmp memcmp
-#define FXSYS_memcpy memcpy
-#define FXSYS_memmove memmove
-#define FXSYS_memset memset
-#define FXSYS_qsort qsort
-#define FXSYS_bsearch bsearch
-
-#if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
-#define FXSYS_GetACP GetACP
-#define FXSYS_itoa _itoa
-#define FXSYS_strlwr _strlwr
-#define FXSYS_strupr _strupr
-#define FXSYS_stricmp _stricmp
-#ifdef _NATIVE_WCHAR_T_DEFINED
-#define FXSYS_wcsicmp(str1, str2) _wcsicmp((wchar_t*)(str1), (wchar_t*)(str2))
-#define FXSYS_WideCharToMultiByte(p1, p2, p3, p4, p5, p6, p7, p8) \
-  WideCharToMultiByte(p1, p2, (const wchar_t*)(p3), p4, p5, p6, p7, p8)
-#define FXSYS_MultiByteToWideChar(p1, p2, p3, p4, p5, p6) \
-  MultiByteToWideChar(p1, p2, p3, p4, (wchar_t*)(p5), p6)
-#define FXSYS_wcslwr(str) _wcslwr((wchar_t*)(str))
-#define FXSYS_wcsupr(str) _wcsupr((wchar_t*)(str))
-#else
-#define FXSYS_wcsicmp _wcsicmp
-#define FXSYS_WideCharToMultiByte WideCharToMultiByte
-#define FXSYS_MultiByteToWideChar MultiByteToWideChar
-#define FXSYS_wcslwr _wcslwr
-#define FXSYS_wcsupr _wcsupr
-#endif
-#define FXSYS_GetFullPathName GetFullPathName
-#define FXSYS_GetModuleFileName GetModuleFileName
-#else
-int FXSYS_GetACP();
-char* FXSYS_itoa(int value, char* str, int radix);
-int FXSYS_WideCharToMultiByte(uint32_t codepage,
-                              uint32_t dwFlags,
-                              const wchar_t* wstr,
-                              int wlen,
-                              char* buf,
-                              int buflen,
-                              const char* default_str,
-                              int* pUseDefault);
-int FXSYS_MultiByteToWideChar(uint32_t codepage,
-                              uint32_t dwFlags,
-                              const char* bstr,
-                              int blen,
-                              wchar_t* buf,
-                              int buflen);
-uint32_t FXSYS_GetFullPathName(const char* filename,
-                               uint32_t buflen,
-                               char* buf,
-                               char** filepart);
-uint32_t FXSYS_GetModuleFileName(void* hModule, char* buf, uint32_t bufsize);
-char* FXSYS_strlwr(char* str);
-char* FXSYS_strupr(char* str);
-int FXSYS_stricmp(const char*, const char*);
-int FXSYS_wcsicmp(const wchar_t* str1, const wchar_t* str2);
-wchar_t* FXSYS_wcslwr(wchar_t* str);
-wchar_t* FXSYS_wcsupr(wchar_t* str);
-#endif  // _FXM_PLATFORM == _FXM_PLATFORM_WINDOWS_
-
-#if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
-#define FXSYS_pow(a, b) (FX_FLOAT) powf(a, b)
-#else
-#define FXSYS_pow(a, b) (FX_FLOAT) pow(a, b)
-#endif
-#define FXSYS_sqrt(a) (FX_FLOAT) sqrt(a)
-#define FXSYS_fabs(a) (FX_FLOAT) fabs(a)
-#define FXSYS_atan2(a, b) (FX_FLOAT) atan2(a, b)
-#define FXSYS_ceil(a) (FX_FLOAT) ceil(a)
-#define FXSYS_floor(a) (FX_FLOAT) floor(a)
-#define FXSYS_cos(a) (FX_FLOAT) cos(a)
-#define FXSYS_acos(a) (FX_FLOAT) acos(a)
-#define FXSYS_sin(a) (FX_FLOAT) sin(a)
-#define FXSYS_log(a) (FX_FLOAT) log(a)
-#define FXSYS_log10(a) (FX_FLOAT) log10(a)
-#define FXSYS_fmod(a, b) (FX_FLOAT) fmod(a, b)
-#define FXSYS_abs abs
-#define FXDWORD_GET_LSBFIRST(p)                                                \
-  ((static_cast<uint32_t>(p[3]) << 24) | (static_cast<uint32_t>(p[2]) << 16) | \
-   (static_cast<uint32_t>(p[1]) << 8) | (static_cast<uint32_t>(p[0])))
-#define FXDWORD_GET_MSBFIRST(p)                                                \
-  ((static_cast<uint32_t>(p[0]) << 24) | (static_cast<uint32_t>(p[1]) << 16) | \
-   (static_cast<uint32_t>(p[2]) << 8) | (static_cast<uint32_t>(p[3])))
-#define FXSYS_HIBYTE(word) ((uint8_t)((word) >> 8))
-#define FXSYS_LOBYTE(word) ((uint8_t)(word))
-#define FXSYS_HIWORD(dword) ((uint16_t)((dword) >> 16))
-#define FXSYS_LOWORD(dword) ((uint16_t)(dword))
-int32_t FXSYS_atoi(const FX_CHAR* str);
-uint32_t FXSYS_atoui(const FX_CHAR* str);
-int32_t FXSYS_wtoi(const FX_WCHAR* str);
-int64_t FXSYS_atoi64(const FX_CHAR* str);
-int64_t FXSYS_wtoi64(const FX_WCHAR* str);
-const FX_CHAR* FXSYS_i64toa(int64_t value, FX_CHAR* str, int radix);
-int FXSYS_round(FX_FLOAT f);
-#define FXSYS_sqrt2(a, b) (FX_FLOAT) FXSYS_sqrt((a) * (a) + (b) * (b))
-#ifdef __cplusplus
-};
-#endif
-
-// To print a size_t value in a portable way:
-//   size_t size;
-//   printf("xyz: %" PRIuS, size);
-// The "u" in the macro corresponds to %u, and S is for "size".
-
-#if _FXM_PLATFORM_ != _FXM_PLATFORM_WINDOWS_
-
-#if (defined(_INTTYPES_H) || defined(_INTTYPES_H_)) && !defined(PRId64)
-#error "inttypes.h has already been included before this header file, but "
-#error "without __STDC_FORMAT_MACROS defined."
-#endif
-
-#if !defined(__STDC_FORMAT_MACROS)
-#define __STDC_FORMAT_MACROS
-#endif
-
-#include <inttypes.h>
-
-#if !defined(PRIuS)
-#define PRIuS "zu"
-#endif
-
-#else  // _FXM_PLATFORM_ != _FXM_PLATFORM_WINDOWS_
-
-#if !defined(PRIuS)
-#define PRIuS "Iu"
-#endif
-
-#endif  // _FXM_PLATFORM_ != _FXM_PLATFORM_WINDOWS_
-
-// Prevent a function from ever being inlined, typically because we'd
-// like it to appear in stack traces.
-#if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
-#define NEVER_INLINE __declspec(noinline)
-#else  // _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
-#define NEVER_INLINE __attribute__((__noinline__))
-#endif  // _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
-
-#endif  // CORE_FXCRT_INCLUDE_FX_SYSTEM_H_