--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libraries/spcre/grep/Grep.cpp	Wed Jun 23 15:52:26 2010 +0100
@@ -0,0 +1,160 @@
+// Grep.cpp
+// 
+// Copyright (c) 2009 - 2010 Accenture. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Accenture nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+#include <fshell/ioutils.h>
+#include <fshell/common.mmh>
+#include <fshell/descriptorutils.h>
+#include <fshell/pcre/cregex.h>
+
+using namespace IoUtils;
+using namespace LtkUtils;
+
+class CCmdGrep : public CCommandBase
+	{
+public:
+	static CCommandBase* NewLC();
+	~CCmdGrep();
+private:
+	CCmdGrep();
+private: // From CCommandBase.
+	virtual const TDesC& Name() const;
+	virtual void DoRunL();
+	virtual void ArgumentsL(RCommandArgumentList& aArguments);
+	virtual void OptionsL(RCommandOptionList& aOptions);
+private:
+	HBufC* iPattern;
+	TBool iIgnoreCase;
+	TBool iInvertMatch;
+	TBool iCount;
+	TBool iUnicode;
+
+	RLtkBuf8 iNarrowBuf;
+	CRegEx* iRegex;
+	};
+
+EXE_BOILER_PLATE(CCmdGrep)
+
+CCommandBase* CCmdGrep::NewLC()
+	{
+	CCmdGrep* self = new(ELeave) CCmdGrep();
+	CleanupStack::PushL(self);
+	self->BaseConstructL();
+	return self;
+	}
+
+CCmdGrep::~CCmdGrep()
+	{
+	delete iPattern;
+	delete iRegex;
+	iNarrowBuf.Close();
+	}
+
+CCmdGrep::CCmdGrep()
+	{
+	}
+
+const TDesC& CCmdGrep::Name() const
+	{
+	_LIT(KName, "grep");	
+	return KName;
+	}
+
+void CCmdGrep::ArgumentsL(RCommandArgumentList& aArguments)
+	{
+	aArguments.AppendStringL(iPattern, _L("pattern"));
+	}
+
+void CCmdGrep::OptionsL(RCommandOptionList& aOptions)
+	{
+	_LIT(KCmdGrepOptIgnoreCase, "ignore-case");
+	_LIT(KCmdGrepOptInvertMatch, "invert-match");
+	_LIT(KCmdGrepOptCount, "count");
+	_LIT(KCmdGrepOptUnicode, "unicode");
+	aOptions.AppendBoolL(iIgnoreCase, KCmdGrepOptIgnoreCase);
+	aOptions.AppendBoolL(iInvertMatch, KCmdGrepOptInvertMatch);
+	aOptions.AppendBoolL(iCount, KCmdGrepOptCount);
+	aOptions.AppendBoolL(iUnicode, KCmdGrepOptUnicode);
+	}
+
+void CCmdGrep::DoRunL()
+	{
+	TRegExOptions options(EPcreExtended|EPcreNewlineAny);
+	if (iUnicode)
+		{
+		iNarrowBuf.CopyAsUtf8L(*iPattern);
+		options.SetUtf8(ETrue);
+		}
+	else
+		{
+		iNarrowBuf.AppendL(*iPattern);
+		}
+	if (iIgnoreCase) options.SetCaseless(ETrue);
+
+	iRegex = CRegEx::NewL(iNarrowBuf, options);
+
+	Stdin().SetReadMode(RIoReadHandle::ELine);
+	TBuf<0x100> line;
+	TInt count = 0;
+	while (Stdin().Read(line) == KErrNone)
+		{
+		iNarrowBuf.Zero();
+		if (iUnicode)
+			{
+			iNarrowBuf.CopyAsUtf8L(line);
+			}
+		else
+			{
+			iNarrowBuf.AppendL(line);
+			}
+
+		TBool matches = iRegex->PartialMatchL(iNarrowBuf);
+
+		if (iInvertMatch)
+			{
+			matches = !matches;
+			}
+		if (matches)
+			{
+			if (iCount)
+				{
+				count++;
+				}
+			else
+				{
+				Write(line);
+				}
+			}
+		}
+
+	if (iCount)
+		{
+		Printf(_L("Count = %d"), count);
+		}
+	}