1 files changed, 130 insertions, 0 deletions
diff --git a/core/fxcrt/fx_ext.h b/core/fxcrt/fx_ext.h
new file mode 100644
index 0000000000..959a26bf44
--- /dev/null
+++ b/core/fxcrt/fx_ext.h
@@ -0,0 +1,130 @@
+// 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_EXT_H_
+#define CORE_FXCRT_FX_EXT_H_
+
+#include <cctype>
+#include <cwctype>
+
+#include "core/fxcrt/fx_basic.h"
+
+#define FX_INVALID_OFFSET static_cast<uint32_t>(-1)
+
+// TODO(thestig) Using unique_ptr with ReleaseDeleter is still not ideal.
+// Come up or wait for something better. This appears in this file rather
+// than fx_stream.h due to include ordering restrictions.
+using ScopedFileStream =
+    std::unique_ptr<IFX_FileStream, ReleaseDeleter<IFX_FileStream>>;
+
+FX_FLOAT FXSYS_tan(FX_FLOAT a);
+FX_FLOAT FXSYS_logb(FX_FLOAT b, FX_FLOAT x);
+FX_FLOAT FXSYS_strtof(const FX_CHAR* pcsStr,
+                      int32_t iLength = -1,
+                      int32_t* pUsedLen = nullptr);
+FX_FLOAT FXSYS_wcstof(const FX_WCHAR* pwsStr,
+                      int32_t iLength = -1,
+                      int32_t* pUsedLen = nullptr);
+FX_WCHAR* FXSYS_wcsncpy(FX_WCHAR* dstStr, const FX_WCHAR* srcStr, size_t count);
+int32_t FXSYS_wcsnicmp(const FX_WCHAR* s1, const FX_WCHAR* s2, size_t count);
+int32_t FXSYS_strnicmp(const FX_CHAR* s1, const FX_CHAR* 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 (wch >= L'A' && wch <= L'Z') || (wch >= L'a' && wch <= L'z');
+}
+inline bool FXSYS_iswdigit(wchar_t wch) {
+  return wch >= L'0' && wch <= L'9';
+}
+inline bool FXSYS_iswalnum(wchar_t wch) {
+  return FXSYS_iswalpha(wch) || FXSYS_iswdigit(wch);
+}
+inline bool FXSYS_iswspace(FX_WCHAR c) {
+  return (c == 0x20) || (c == 0x0d) || (c == 0x0a) || (c == 0x09);
+}
+
+inline int FXSYS_toHexDigit(const FX_CHAR c) {
+  if (!std::isxdigit(c))
+    return 0;
+  char upchar = std::toupper(c);
+  return upchar > '9' ? upchar - 'A' + 10 : upchar - '0';
+}
+
+inline bool FXSYS_isDecimalDigit(const FX_CHAR c) {
+  return !!std::isdigit(c);
+}
+
+inline bool FXSYS_isDecimalDigit(const FX_WCHAR c) {
+  return !!std::iswdigit(c);
+}
+
+inline int FXSYS_toDecimalDigit(const FX_CHAR c) {
+  return std::isdigit(c) ? c - '0' : 0;
+}
+
+inline int FXSYS_toDecimalDigit(const FX_WCHAR c) {
+  return std::iswdigit(c) ? c - L'0' : 0;
+}
+
+FX_FLOAT FXSYS_FractionalScale(size_t scale_factor, int value);
+int FXSYS_FractionalScaleCount();
+
+void* FX_Random_MT_Start(uint32_t dwSeed);
+void FX_Random_MT_Close(void* pContext);
+uint32_t FX_Random_MT_Generate(void* pContext);
+void FX_Random_GenerateBase(uint32_t* pBuffer, int32_t iCount);
+void FX_Random_GenerateMT(uint32_t* pBuffer, int32_t iCount);
+void FX_Random_GenerateCrypto(uint32_t* pBuffer, int32_t iCount);
+
+#ifdef PDF_ENABLE_XFA
+typedef struct FX_GUID {
+  uint32_t data1;
+  uint16_t data2;
+  uint16_t data3;
+  uint8_t data4[8];
+} FX_GUID, *FX_LPGUID;
+typedef FX_GUID const* FX_LPCGUID;
+void FX_GUID_CreateV4(FX_LPGUID pGUID);
+void FX_GUID_ToString(FX_LPCGUID pGUID,
+                      CFX_ByteString& bsStr,
+                      FX_BOOL bSeparator = TRUE);
+#endif  // PDF_ENABLE_XFA
+
+template <class baseType>
+class CFX_SSortTemplate {
+ public:
+  void ShellSort(baseType* pArray, int32_t iCount) {
+    ASSERT(pArray && iCount > 0);
+    int32_t i, j, gap;
+    baseType v1, v2;
+    gap = iCount >> 1;
+    while (gap > 0) {
+      for (i = gap; i < iCount; i++) {
+        j = i - gap;
+        v1 = pArray[i];
+        while (j > -1 && (v2 = pArray[j]) > v1) {
+          pArray[j + gap] = v2;
+          j -= gap;
+        }
+        pArray[j + gap] = v1;
+      }
+      gap >>= 1;
+    }
+  }
+};
+
+#endif  // CORE_FXCRT_FX_EXT_H_