--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/installationservices/refswinstallationplugin/source/sifrefpkgparser.cpp	Fri Mar 19 09:33:35 2010 +0200
@@ -0,0 +1,349 @@
+/*
+* Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: 
+* This file implements a package file parser for the Reference Installer.
+*
+*/
+
+
+#include "sifrefpkgparser.h"
+#include <f32file.h>
+#include "usiflog.h"
+#include <usif/usiferror.h>
+
+using namespace Usif;
+
+/**
+A set of helper functions for the parser.
+*/
+namespace
+	{
+	_LIT8(KTxtCRLF, "\r\n");
+	_LIT8(KTxtLanguages, "Languages");
+	_LIT8(KTxtComponentName, "ComponentName");
+	_LIT8(KTxtComponentVendor, "ComponentVendor");
+	_LIT8(KTxtComponentVersion, "ComponentVersion");
+	_LIT8(KTxtFile, "File");
+
+	/** Maximum length of a value string in a package file */
+	const TInt KMaxValueLength = 0xFF;
+
+	void SplitLineL(const TPtrC8& aLine, TPtrC8& aName, TPtrC8& aValue)
+		{
+		const TInt colon = aLine.Locate(':');
+		if (colon == KErrNotFound)
+			{
+			DEBUG_PRINTF2(_L8("Missing colon in line: %S"), &aLine);
+			User::Leave(KErrCorrupt);
+			}
+
+		aName.Set(aLine.Left(colon));
+		aValue.Set(aLine.Mid(colon+1));
+		}
+
+	void SplitValuesL(const TPtrC8& aValues, RCHBufCArray& aValueArray)
+		{
+		TPtrC8 values(aValues);
+		while (values.Size() > 0)
+			{
+			TInt quot = values.Locate('"');
+			if (quot == KErrNotFound)
+				{
+				return;
+				}
+			values.Set(values.Mid(quot+1));
+			quot = values.Locate('"');
+			if (quot == KErrNotFound)
+				{
+				DEBUG_PRINTF2(_L8("Missing closing quotation mark in line: %S"), &aValues);
+				User::Leave(KErrCorrupt);
+				}
+			TPtrC8 token(values.Left(quot));
+
+			HBufC* value = HBufC::NewLC(KMaxValueLength);
+			TPtr valPtr(value->Des());
+			valPtr.Copy(token);
+			aValueArray.AppendL(value);
+			CleanupStack::Pop(value);
+
+			values.Set(values.Mid(quot+1));
+			}
+		}
+
+	void ParseComponentVersionL(const TPtrC8& aStringVersion, TVersion& aVersion)
+		{
+		// Check if already defined
+		if (aVersion.iMajor || aVersion.iMinor || aVersion.iBuild)
+			{
+			DEBUG_PRINTF(_L8("Multiple definition of Component Version"));
+			User::Leave(KErrCorrupt);
+			}
+
+		// Convert the major version number of Component Version
+		TLex8 lex(aStringVersion);
+		lex.SkipSpace();
+		TInt err = lex.Val(aVersion.iMajor);
+		if (err != KErrNone)
+			{
+			DEBUG_PRINTF(_L8("Failed parsing the major version number of Component Version"));
+			User::LeaveIfError(err);
+			}
+		lex.Inc();
+
+		// Convert the minor version number of Component Version
+		err = lex.Val(aVersion.iMinor);
+		if (err != KErrNone)
+			{
+			DEBUG_PRINTF(_L8("Failed parsing the minor version number of Component Version"));
+			User::LeaveIfError(err);
+			}
+		lex.Inc();
+
+		// Convert the build version number of Component Version
+		err = lex.Val(aVersion.iBuild);
+		if (err != KErrNone)
+			{
+			DEBUG_PRINTF(_L8("Failed parsing the build version number of Component Version"));
+			User::LeaveIfError(err);
+			}
+		}
+
+	TLanguage LanguageMapL(TDesC& aLanguage)
+		{
+		if (aLanguage == _L("EN"))
+			{
+			return ELangEnglish;
+			}
+		else if (aLanguage == _L("HU"))
+			{
+			return ELangHungarian;
+			}
+		else if (aLanguage == _L("PL"))
+			{
+			return ELangPolish;
+			}
+
+		DEBUG_PRINTF2(_L8("Language %S is not supported by this Reference Installer"), &aLanguage);
+		User::Leave(KErrSifUnsupportedLanguage);
+		return ELangNone;// Suppress warning
+		}
+	}
+
+CSifRefPkgParser* CSifRefPkgParser::NewL(const TDesC& aFileName)
+	{
+	CSifRefPkgParser* self = new (ELeave) CSifRefPkgParser;
+	CleanupStack::PushL(self);
+	self->ParseL(aFileName);
+	CleanupStack::Pop(self);
+	return self;
+	}
+
+CSifRefPkgParser::CSifRefPkgParser(): iVersion(0, 0, 0)
+	{
+	}
+
+CSifRefPkgParser::~CSifRefPkgParser()
+	{
+	iLanguages.Close();
+	iComponentNames.Close();
+	iVendorNames.Close();
+	iFiles.Close();
+	}
+
+const RLanguageArray& CSifRefPkgParser::Languages() const
+	{
+	return iLanguages;
+	}
+
+const RCHBufCArray& CSifRefPkgParser::ComponentNames() const
+	{
+	return iComponentNames;
+	}
+
+const RCHBufCArray& CSifRefPkgParser::VendorNames() const
+	{
+	return iVendorNames;
+	}
+
+const TVersion& CSifRefPkgParser::Version() const
+	{
+	return iVersion;
+	}
+
+const RCHBufCArray& CSifRefPkgParser::Files() const
+	{
+	return iFiles;
+	}
+
+void CSifRefPkgParser::ParseL(const TDesC& aFileName)
+	{
+	RFs fs;
+	RFile file;
+	User::LeaveIfError(fs.Connect());
+	CleanupClosePushL(fs);
+	TInt err = file.Open(fs, aFileName, EFileShareReadersOnly);
+	if (err != KErrNone)
+		{
+		DEBUG_PRINTF3(_L8("Failed to open file: %S with error: %d"), &aFileName, err);
+		User::Leave(err);
+		}
+	CleanupClosePushL(file);
+
+	ParseL(file);
+
+	CleanupStack::PopAndDestroy(2, &fs);
+	}
+
+void CSifRefPkgParser::ParseL(RFile& aFileHandle)
+	{
+	// Read the file into the buffer 
+	TInt fileSize = 0;
+	User::LeaveIfError(aFileHandle.Size(fileSize));
+	HBufC8* buffer = HBufC8::NewLC(fileSize);
+	TPtr8 bufPtr = buffer->Des();
+	TInt err = aFileHandle.Read(bufPtr);
+	if (err != KErrNone)
+		{
+		DEBUG_PRINTF2(_L8("Failed to read reference package file with err %d"), err);
+		User::LeaveIfError(err);
+		}
+
+	// Iterate over the lines
+	TPtrC8 lines(*buffer);
+	const TInt crlfLen = TPtrC8(KTxtCRLF).Size();
+	while (lines.Size() > 0)
+		{
+		// Find next line
+		TPtrC8 line;
+		const TInt crlfPos = lines.Find(KTxtCRLF);
+		if (crlfPos != KErrNotFound)
+			{
+			line.Set(lines.Left(crlfPos));
+			lines.Set(lines.Mid(crlfPos+crlfLen));
+			}
+		else
+			{
+			if (lines.Size() > 0)
+				{
+				line.Set(lines);
+				lines.Set(TPtrC8());
+				}
+			}
+		
+		// Split the line into a pair of the name of a tag and its value
+		TPtrC8 name, value;
+		SplitLineL(line, name, value);
+		
+		// Hand over the pair to recognition
+		LineHandlerL(name, value);
+		}
+	CleanupStack::PopAndDestroy(buffer);
+	
+	// Check whether the file we have just parsed wasn't corrupted
+	CheckInvariantL();
+	}
+
+void CSifRefPkgParser::LineHandlerL(const TPtrC8& aName, const TPtrC8& aValue)
+	{
+	if (aName == KTxtLanguages)
+		{
+		if (iLanguages.Count() > 0)
+			{
+			DEBUG_PRINTF(_L8("Multiple definition of languages"));
+			User::Leave(KErrCorrupt);
+			}
+		RCHBufCArray languages;
+		CleanupClosePushL(languages);
+		SplitValuesL(aValue, languages);
+		const TInt count = languages.Count();
+		for (TInt i=0; i<count; ++i)
+			{
+			iLanguages.AppendL(LanguageMapL(*languages[i]));
+			}
+		CleanupStack::PopAndDestroy(&languages);
+		}
+	else if (aName == KTxtComponentName)
+		{
+		if (iComponentNames.Count() > 0)
+			{
+			DEBUG_PRINTF(_L8("Multiple definition of Component Name"));
+			User::Leave(KErrCorrupt);
+			}
+		SplitValuesL(aValue, iComponentNames);
+		}
+	else if (aName == KTxtComponentVendor)
+		{
+		if (iVendorNames.Count() > 0)
+			{
+			DEBUG_PRINTF(_L8("Multiple definition of Component Vendor"));
+			User::Leave(KErrCorrupt);
+			}
+		SplitValuesL(aValue, iVendorNames);
+		}
+	else if (aName == KTxtComponentVersion)
+		{
+		ParseComponentVersionL(aValue, iVersion);
+		}
+	else if (aName == KTxtFile)
+		{
+		HBufC* file = HBufC::NewLC(aValue.Size());
+		TPtr fileBuf = file->Des();
+		fileBuf.Copy(aValue);
+		fileBuf.Trim();
+		iFiles.AppendL(file);
+		CleanupStack::Pop(file);
+		}
+	else
+		{
+		DEBUG_PRINTF2(_L8("Failed due to unrecognized token: %S"), &aName);
+		User::Leave(KErrCorrupt);
+		}
+	}
+
+TInt CSifRefPkgParser::GetLanguageIndex(TLanguage aLanguage) const
+	{
+	const TInt count = iLanguages.Count();
+	for (TInt i=0; i<count; ++i)
+		{
+		if (iLanguages[i] == aLanguage)
+			{
+			return i;
+			}
+		}
+	return KErrNotFound;
+	}
+
+void CSifRefPkgParser::CheckInvariantL() const
+	{
+	if (iVersion.iMajor == 0 && iVersion.iMinor == 0 && iVersion.iBuild == 0)
+		{
+		DEBUG_PRINTF(_L8("Version not specified!"));
+		User::Leave(KErrCorrupt);
+		}
+	if (iLanguages.Count() == 0)
+		{
+		DEBUG_PRINTF(_L8("Language not specified!"));
+		User::Leave(KErrCorrupt);
+		}
+	if (iLanguages.Count() != iComponentNames.Count())
+		{
+		DEBUG_PRINTF(_L8("The number of languages and component names don't match!"));
+		User::Leave(KErrCorrupt);
+		}
+	if (iLanguages.Count() != iVendorNames.Count())
+		{
+		DEBUG_PRINTF(_L8("The number of languages and vendor names don't match!"));
+		User::Leave(KErrCorrupt);
+		}
+	}