// file_utils.cpp

// 

// Copyright (c) 2006 - 2010 Accenture. All rights reserved.

// This component and the accompanying materials are made available

// under the terms of the "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:

// Accenture - Initial contribution

//

#include <e32base.h>

#include <f32file.h>

#include "ioutils.h"

using namespace IoUtils;

//

// Constants.

//

_LIT(KSlash, "\\");

_LIT(KDoubleSlash, "\\\\");

_LIT(KDot, ".");

_LIT(KDoubleDot, "..");

__ASSERT_COMPILE(sizeof(TFileName2) == sizeof(TFileName) + 4);

//

// TFileName2.

//

EXPORT_C TFileName2::TFileName2()

	{

	new(this) TFileName2(EFile);

	}

EXPORT_C TFileName2::TFileName2(TType aType)

	{

	new(this) TFileName2(KNullDesC, aType);

	}

EXPORT_C TFileName2::TFileName2(const TDesC& aName)

	: TBuf<256>(aName), iType(EFile)

	{

	new(this) TFileName2(aName, EFile);

	}

EXPORT_C TFileName2::TFileName2(const TDesC& aName, TType aType)

	: TBuf<256>(aName), iType(aType)

	{

	// Remove any double slashes that may be present.

	TInt pos;

	while ((pos = Find(KDoubleSlash)) >= 0)

		{

		Delete(pos, 1);

		}

	}

EXPORT_C TBool TFileName2::IsAbsolute() const

	{

	return ((Length() >= 3) && TChar((*this)[0]).IsAlpha() && ((*this)[1] == ':') && ((*this)[2] == '\\'));

	}

EXPORT_C TBool TFileName2::IsDriveLetter() const

	{

	return (Length() == 2) && TChar((*this)[0]).IsAlpha() && ((*this)[1] == ':');

	}

EXPORT_C TBool TFileName2::IsDriveRoot() const

	{

	return ((Length() == 3) && TChar((*this)[0]).IsAlpha() && ((*this)[1] == ':') && ((*this)[2] == '\\'));

	}

EXPORT_C TBool TFileName2::IsWild() const

	{

	return TParsePtrC(*this).IsWild();

	}

EXPORT_C TBool TFileName2::IsFile() const

	{

	TBool ret = (iType == EFile);

	ASSERT((ret && !HasTrailingSlash()) || (!ret && HasTrailingSlash()));

	return ret;

	}

EXPORT_C TBool TFileName2::IsDir() const

	{

	TBool ret = (iType == EDirectory);

	ASSERT((ret && HasTrailingSlash()) || (!ret && !HasTrailingSlash()));

	return ret;

	}

EXPORT_C TBool TFileName2::HasDriveLetter() const

	{

	return ((Length() >= 2) && TChar((*this)[0]).IsAlpha() && ((*this)[1] == ':'));

	}

EXPORT_C TBool TFileName2::HasLeadingSlash() const

	{

	return ((Length() >= 1) && ((*this)[0] == '\\'));

	}

EXPORT_C TBool TFileName2::HasTrailingSlash() const

	{

	return ((Length() >= 1) && ((*this)[Length() - 1] == '\\'));

	}

EXPORT_C TPtrC TFileName2::Drive() const

	{

	return TParsePtrC(*this).Drive();

	}

EXPORT_C TPtrC TFileName2::Path() const

	{

	return TParsePtrC(*this).Path();

	}

EXPORT_C TPtrC TFileName2::DriveAndPath() const

	{

	return TParsePtrC(*this).DriveAndPath();

	}

EXPORT_C TPtrC TFileName2::Name() const

	{

	return TParsePtrC(*this).Name();

	}

EXPORT_C TPtrC TFileName2::Ext() const

	{

	return TParsePtrC(*this).Ext();

	}

EXPORT_C TPtrC TFileName2::NameAndExt() const

	{

	return TParsePtrC(*this).NameAndExt();

	}

EXPORT_C void TFileName2::SetL(const TFileName2& aName)

	{

	Zero();

	AppendComponentL(aName);

	}

EXPORT_C void TFileName2::SetTypeL(TType aType)

	{

	switch (aType)

		{

		case EFile:

			{

			if (HasTrailingSlash() && ((HasDriveLetter() && (Length() > 3)) || (!HasDriveLetter() && (Length() > 1))))

				{

				Delete(Length() - 1, 1);

				}

			iType = EFile;

			break;

			}

		case EDirectory:

			{

			if (!HasTrailingSlash())

				{

				AppendComponentL(KNullDesC());

				}

			iType = EDirectory;

			break;

			}

		default:

			{

			ASSERT(EFalse);

			}

		}

	}

EXPORT_C void TFileName2::SetTypeL(RFs& aFs)

	{

	if (IsDirL(aFs))

		{

		SetTypeL(EDirectory);

		}

	else

		{

		SetTypeL(EFile);

		}

	}

EXPORT_C void TFileName2::SetDriveL(const TDesC& aDrive)

	{

	if (Drive().Length() > 0)

		{

		(*this)[0] = aDrive[0];

		}

	else

		{

		PrependL(aDrive);

		}

	}

EXPORT_C void TFileName2::SetPathL(const TDesC& aPath)

	{

	TFileName2 temp;

	temp.SetDriveL(Drive());

	temp.AppendComponentL(aPath);

	temp.SetNameAndExtL(NameAndExt());

	Copy(temp);

	}

EXPORT_C void TFileName2::SetNameL(const TDesC& aName)

	{

	TPtrC namePtrC(Name());

	if (namePtrC.Length() > 0)

		{

		CheckSpaceL(aName.Length() - namePtrC.Length());

		TInt namePos = namePtrC.Ptr() - Ptr();

		Delete(namePos, namePtrC.Length());

		Insert(namePos, aName);

		}

	else

		{

		AppendComponentL(aName);

		}

	}

EXPORT_C void TFileName2::SetExtL(const TDesC& aExt)

	{

	TPtrC extPtrC(Ext());

	if (extPtrC.Length() > 0)

		{

		CheckSpaceL(aExt.Length() + ((aExt[0] == '.') ? 0 : 1) - extPtrC.Length());

		Delete(extPtrC.Ptr() - Ptr(), extPtrC.Length());

		}

	else

		{

		CheckSpaceL(aExt.Length() + ((aExt[0] == '.') ? 0 : 1));

		}

	if (aExt[0] != '.')

		{

		Append('.');

		}

	Append(aExt);

	}

EXPORT_C void TFileName2::SetNameAndExtL(const TDesC& aNameAndExt)

	{

	TPtrC nameAndExtPtrC(NameAndExt());

	if (nameAndExtPtrC.Length() > 0)

		{

		CheckSpaceL(aNameAndExt.Length() - nameAndExtPtrC.Length());

		TInt nameAndExtPos = nameAndExtPtrC.Ptr() - Ptr();

		Delete(nameAndExtPos, nameAndExtPtrC.Length());

		Insert(nameAndExtPos, aNameAndExt);

		}

	else

		{

		AppendComponentL(aNameAndExt);

		}

	}

EXPORT_C void TFileName2::PrependL(const TFileName2& aName)

	{

	if (Length() == 0)

		{

		CheckSpaceL(aName.Length() + (((iType == EDirectory) && !HasTrailingSlash()) ? 1 : 0));

		Append(aName);

		}

	else if (aName.HasTrailingSlash() && HasLeadingSlash())

		{

		CheckSpaceL(aName.Length() - 1 + (((iType == EDirectory) && !HasTrailingSlash()) ? 1 : 0));

		Insert(0, aName.Mid(1));

		}

	else if (!aName.HasTrailingSlash() && !HasLeadingSlash())

		{

		CheckSpaceL(aName.Length() + 1 + (((iType == EDirectory) && !HasTrailingSlash()) ? 1 : 0));

		Insert(0, KSlash);

		Insert(0, aName);

		}

	else

		{

		CheckSpaceL(aName.Length() + (((iType == EDirectory) && !HasTrailingSlash()) ? 1 : 0));

		Insert(0, aName);

		}

	if ((iType == EDirectory) && (!HasTrailingSlash()))

		{

		Append(KSlash);

		}

	}

EXPORT_C void TFileName2::AppendComponentL(const TFileName2& aName)

	{

	AppendComponentL(aName, iType);

	}

EXPORT_C void TFileName2::AppendComponentL(const TDesC& aPathComponent, TFileName2::TType aType)

	{

	// This function doesn't use iType, therefore you can call it and get the same results regardless of whether the type has been set - you will only get a trailing slash if (a) aPathComponent ends in a slash, or (b) aType is EDirectory.

	TPtrC pathWithoutLeadingSlash(aPathComponent);

	if (aPathComponent.Length() && aPathComponent[0] == '\\') pathWithoutLeadingSlash.Set(aPathComponent.Mid(1));

	TInt pathLen = pathWithoutLeadingSlash.Length();

	const TDesC* middle = &KNullDesC;

	if (Length() && !HasTrailingSlash()) middle = &KSlash;

	const TDesC* end = &KNullDesC;

	if (aType == EDirectory && pathLen && pathWithoutLeadingSlash[pathLen-1] != '\\') end = &KSlash;

	CheckSpaceL(pathLen + middle->Length() + end->Length());

	Append(*middle);

	Append(pathWithoutLeadingSlash);

	Append(*end);

	}

EXPORT_C void TFileName2::AppendComponentL(const TEntry& aEntry)

	{

	AppendComponentL(aEntry.iName, aEntry.IsDir() ? EDirectory : EFile);

	}

EXPORT_C void TFileName2::SetIsDirectoryL()

	{

	// This is the more complicated way to do it, the other would be: if (!HasTrailingSlash()) AppendL(KSlash);

	// Or indeed, AppendComponentL(KNullDesC, EDirectory) since the type is irrelevant if the component is empty

	AppendComponentL(KNullDesC, EFile);

	}

void TFileName2::CheckSpaceL(TInt aLengthToAdd) const

	{

	if ((MaxLength() - Length()) < aLengthToAdd)

		{

		User::Leave(KErrTooBig);

		}

	}

EXPORT_C void TFileName2::SplitL(RArray<TFileName2>& aOutput)

	{

	TLex lex(*this);

	while (!lex.Eos())

		{

		lex.Mark();

		while (!lex.Eos() && (lex.Peek() != '\\'))

			{

			lex.Get();

			}

		User::LeaveIfError(aOutput.Append(TFileName2(lex.MarkedToken())));

		if (!lex.Eos())

			{

			// Skip over the slash

			lex.Get();

			if (lex.Eos())

				{

				// ended with slash - insert empty path component

				User::LeaveIfError(aOutput.Append(TFileName2()));

				}

			}

		}

	}

EXPORT_C void TFileName2::MakeAbsoluteL(const TFileName2& aAbsoluteTo)

	{

	ASSERT(aAbsoluteTo.IsAbsolute());

	if (IsAbsolute())

		{

		return;

		}

	if (HasLeadingSlash())

		{

		// Just prepend drive letter.

		PrependL(aAbsoluteTo.Left(2));

		return;

		}

	PrependL(aAbsoluteTo);

	RArray<TFileName2> splitName;

	CleanupClosePushL(splitName);

	SplitL(splitName);

	TInt i = 0;

	while (i < splitName.Count())

		{

		const TFileName2& piece = splitName[i];

		if (piece == KDot)

			{

			splitName.Remove(i);

			}

		else if (piece == KDoubleDot)

			{

			if ((i == 0) || ((i == 1) && splitName[0].IsDriveLetter()))

				{

				User::Leave(KErrBadName);

				}

			splitName.Remove(i);

			splitName.Remove(i - 1);

			--i;

			}

		else if ((piece == KNullDesC) && (i != 0) && (i != splitName.Count()-1))

			{

			// Allow empty piece in first or last slot to support leading/trailing slashes.

			splitName.Remove(i);

			}

		else

			{

			++i;

			}

		}

	UnsplitL(splitName);

	CleanupStack::PopAndDestroy(&splitName);

	}

EXPORT_C void TFileName2::MakeAbsoluteL(RFs& aFs)

	{

	TFileName2 sessionPath;

	User::LeaveIfError(aFs.SessionPath(sessionPath));

	MakeAbsoluteL(sessionPath);

	}

EXPORT_C void TFileName2::UnsplitL(const RArray<TFileName2>& aInput)

	{

	Zero();

	const TInt count = aInput.Count();

	for (TInt i = 0; i < count; ++i)

		{

		AppendComponentL(aInput[i]);

		}

	if ((count == 1) && (aInput[0].Match(_L("?:")) == 0))

		{

		Append(KSlash);

		}

	}

EXPORT_C TBool TFileName2::Exists(RFs& aFs) const

	{

	TInt err;

	if (IsDriveRoot())

		{

		TInt driveNumber;

		err = RFs::CharToDrive(Drive()[0], driveNumber);

		if (err == KErrNone)

			{

			TDriveInfo driveInfo;

			err = aFs.Drive(driveInfo, driveNumber);

			}

		}

	else

		{

		TUint att;

		err = aFs.Att(*this, att);

		}

	return (err == KErrNone);

	}

EXPORT_C TBool TFileName2::IsReadOnlyL(RFs& aFs) const

	{

	TEntry entry;

	User::LeaveIfError(aFs.Entry(*this, entry));

	return entry.IsReadOnly();

	}

EXPORT_C TBool TFileName2::IsHiddenL(RFs& aFs) const

	{

	TEntry entry;

	User::LeaveIfError(aFs.Entry(*this, entry));

	return entry.IsHidden();

	}

EXPORT_C TBool TFileName2::IsSystemL(RFs& aFs) const

	{

	TEntry entry;

	User::LeaveIfError(aFs.Entry(*this, entry));

	return entry.IsSystem();

	}

EXPORT_C TBool TFileName2::IsDirL(RFs& aFs) const

	{

	if (IsDriveRoot())

		{

		if (!Exists(aFs))

			{

			User::Leave(KErrNotFound);

			}

		return ETrue;

		}

	else

		{

		TEntry entry;

		User::LeaveIfError(aFs.Entry(*this, entry));

		return entry.IsDir();

		}

	}

EXPORT_C TBool TFileName2::IsArchiveL(RFs& aFs) const

	{

	TEntry entry;

	User::LeaveIfError(aFs.Entry(*this, entry));

	return entry.IsArchive();

	}

EXPORT_C TInt TFileName2::FindFile(RFs& aFs)

	{

	TFindFile ff(aFs);

	TInt err = ff.FindByDir(*this, KNullDesC);

	if (err==KErrNone)

		{

		*this = ff.File();

		}

	return err;

	}

EXPORT_C void TFileName2::FindFileL(RFs& aFs)

	{

	User::LeaveIfError(FindFile(aFs));

	}