1// Copyright 2014 PDFium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6
7#ifndef CORE_INCLUDE_FXCRT_FX_EXT_H_
8#define CORE_INCLUDE_FXCRT_FX_EXT_H_
9
10#include <cctype>
11#include <cwctype>
12
13#include "core/include/fxcrt/fx_basic.h"
14
15FX_FLOAT FXSYS_tan(FX_FLOAT a);
16FX_FLOAT FXSYS_logb(FX_FLOAT b, FX_FLOAT x);
17FX_FLOAT FXSYS_strtof(const FX_CHAR* pcsStr,
18                      int32_t iLength = -1,
19                      int32_t* pUsedLen = NULL);
20FX_FLOAT FXSYS_wcstof(const FX_WCHAR* pwsStr,
21                      int32_t iLength = -1,
22                      int32_t* pUsedLen = NULL);
23FX_WCHAR* FXSYS_wcsncpy(FX_WCHAR* dstStr, const FX_WCHAR* srcStr, size_t count);
24int32_t FXSYS_wcsnicmp(const FX_WCHAR* s1, const FX_WCHAR* s2, size_t count);
25int32_t FXSYS_strnicmp(const FX_CHAR* s1, const FX_CHAR* s2, size_t count);
26
27inline FX_BOOL FXSYS_islower(int32_t ch) {
28  return ch >= 'a' && ch <= 'z';
29}
30inline FX_BOOL FXSYS_isupper(int32_t ch) {
31  return ch >= 'A' && ch <= 'Z';
32}
33inline int32_t FXSYS_tolower(int32_t ch) {
34  return ch < 'A' || ch > 'Z' ? ch : (ch + 0x20);
35}
36inline int32_t FXSYS_toupper(int32_t ch) {
37  return ch < 'a' || ch > 'z' ? ch : (ch - 0x20);
38}
39inline FX_BOOL FXSYS_iswalpha(wchar_t wch) {
40  return (wch >= L'A' && wch <= L'Z') || (wch >= L'a' && wch <= L'z');
41}
42inline FX_BOOL FXSYS_iswdigit(wchar_t wch) {
43  return wch >= L'0' && wch <= L'9';
44}
45inline FX_BOOL FXSYS_iswalnum(wchar_t wch) {
46  return FXSYS_iswalpha(wch) || FXSYS_iswdigit(wch);
47}
48
49inline int FXSYS_toHexDigit(const FX_CHAR c) {
50  if (!std::isxdigit(c))
51    return 0;
52  char upchar = std::toupper(c);
53  return upchar > '9' ? upchar - 'A' + 10 : upchar - '0';
54}
55
56inline int FXSYS_toDecimalDigit(const FX_CHAR c) {
57  if (!std::isdigit(c))
58    return 0;
59  return c - '0';
60}
61
62inline int FXSYS_toDecimalDigitWide(const FX_WCHAR c) {
63  if (!std::iswdigit(c))
64    return 0;
65  return c - L'0';
66}
67
68FX_DWORD FX_HashCode_String_GetA(const FX_CHAR* pStr,
69                                 int32_t iLength,
70                                 FX_BOOL bIgnoreCase = FALSE);
71FX_DWORD FX_HashCode_String_GetW(const FX_WCHAR* pStr,
72                                 int32_t iLength,
73                                 FX_BOOL bIgnoreCase = FALSE);
74
75void* FX_Random_MT_Start(FX_DWORD dwSeed);
76
77FX_DWORD FX_Random_MT_Generate(void* pContext);
78
79void FX_Random_MT_Close(void* pContext);
80
81void FX_Random_GenerateBase(FX_DWORD* pBuffer, int32_t iCount);
82
83void FX_Random_GenerateMT(FX_DWORD* pBuffer, int32_t iCount);
84
85void FX_Random_GenerateCrypto(FX_DWORD* pBuffer, int32_t iCount);
86
87#ifdef PDF_ENABLE_XFA
88typedef struct FX_GUID {
89  FX_DWORD data1;
90  FX_WORD data2;
91  FX_WORD data3;
92  uint8_t data4[8];
93} FX_GUID, *FX_LPGUID;
94typedef FX_GUID const* FX_LPCGUID;
95void FX_GUID_CreateV4(FX_LPGUID pGUID);
96void FX_GUID_ToString(FX_LPCGUID pGUID,
97                      CFX_ByteString& bsStr,
98                      FX_BOOL bSeparator = TRUE);
99#endif  // PDF_ENABLE_XFA
100
101template <class baseType>
102class CFX_SSortTemplate {
103 public:
104  void ShellSort(baseType* pArray, int32_t iCount) {
105    FXSYS_assert(pArray && iCount > 0);
106    int32_t i, j, gap;
107    baseType v1, v2;
108    gap = iCount >> 1;
109    while (gap > 0) {
110      for (i = gap; i < iCount; i++) {
111        j = i - gap;
112        v1 = pArray[i];
113        while (j > -1 && (v2 = pArray[j]) > v1) {
114          pArray[j + gap] = v2;
115          j -= gap;
116        }
117        pArray[j + gap] = v1;
118      }
119      gap >>= 1;
120    }
121  }
122};
123
124#endif  // CORE_INCLUDE_FXCRT_FX_EXT_H_
125