Correctly extracting email addresses

core/include/fxcrt/fx_basic.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_INCLUDE_FXCRT_FX_BASIC_H_
 #define CORE_INCLUDE_FXCRT_FX_BASIC_H_
 
 #include "fx_memory.h"
 #include "fx_stream.h"
 #include "fx_string.h"
 #include "fx_system.h"
 
 // The FX_ArraySize(arr) macro returns the # of elements in an array arr.
 // The expression is a compile-time constant, and therefore can be
 // used in defining new arrays, for example.  If you use FX_ArraySize on
 // a pointer by mistake, you will get a compile-time error.
 //
 // One caveat is that FX_ArraySize() doesn't accept any array of an
 // anonymous type or a type defined inside a function.
 #define FX_ArraySize(array) (sizeof(ArraySizeHelper(array)))
 
 // This template function declaration is used in defining FX_ArraySize.
 // Note that the function doesn't need an implementation, as we only
 // use its type.
 template <typename T, size_t N>
 char(&ArraySizeHelper(T(&array)[N]))[N];
 
+// Check whether a wide char is digital 0-9.
+#define FX_ISWDIGIT(x) ((x) >= L'0' && (x) <= L'9')
+// Check whether a wide char is an alphanumeric character A-Z or a-z.
+#define FX_ISWALPHA(x) \

[Lei Zhang, 2015/12/18 00:20:56]

We already have FXSYS_islower() and friends in core/include/fxcrt/fx_ext.h.
Let's put it there, and not as a #define.

[Wei Li, 2015/12/18 01:12:21]

Done.

+  (((x) >= L'A' && (x) <= L'Z') || ((x) >= L'a' && (x) <= L'z'))
+
 class CFX_BinaryBuf {
  public:
   CFX_BinaryBuf();
   CFX_BinaryBuf(FX_STRSIZE size);
 
   ~CFX_BinaryBuf();
 
   void Clear();
 
   void EstimateSize(FX_STRSIZE size, FX_STRSIZE alloc_step = 0);
@@ skipping 1101 matching lines @@
   FX_FLOAT c;
   FX_FLOAT d;
   FX_FLOAT e;
   FX_FLOAT f;
   FX_FLOAT g;
   FX_FLOAT h;
   FX_FLOAT i;
 };
 
 #endif  // CORE_INCLUDE_FXCRT_FX_BASIC_H_