--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/textandlocutils/nearestlangutils/src/LangUtilImpl.h Fri Sep 17 08:40:09 2010 +0300
@@ -0,0 +1,148 @@
+// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "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:
+//
+
+#ifndef __LANGUTILIMPL_H__
+#define __LANGUTILIMPL_H__
+
+
+#include <f32file.h>
+#include <e32std.h>
+
+/**
+Specifies the maximum length of the numerical part of the suffix.
+
+If this is changed the documentation of the following functions
+must also be updated:
+
+ LangUtil::NearestLanguageFile()
+ TNearestLanguageFileFinder::CountDigitsFromEndInValidSuffix()
+ TNearestLanguageFileFinder::SetFileName()
+*/
+const TInt KMaxSuffixLength = 5;
+
+class RDirectoryScanner
+/**
+@internalAll
+*/
+ {
+public:
+ virtual TInt Open(RFs& aFs, const TDesC& aMatchPattern) = 0;
+ virtual TInt Next(TEntry& aOut) = 0;
+ virtual void Close() = 0;
+ virtual ~RDirectoryScanner() {}
+ };
+
+NONSHARABLE_CLASS(RRealDirectoryScanner) : public RDirectoryScanner
+/**
+@internalAll
+*/
+ {
+public:
+ virtual TInt Open(RFs& aFs, const TDesC& aMatchPattern);
+ virtual TInt Next(TEntry& aOut);
+ virtual void Close();
+private:
+ RDir iDir;
+ };
+
+
+/**
+ * Add a language to the end of the language path, unless it is already
+ * present. On entry, the language path must have an ELangNone entry at its
+ * end. This will be true on exit also.
+ * @internalAll
+ */
+void AddLanguage(TLanguagePath& aPath, TLanguage aNewLanguage);
+
+/**
+ * Create a language path from the current language, ideal language and locale.
+ * The path may have up to eight entries in it.
+ * @internalAll
+ */
+
+void MakeLanguageDowngradePath(TLanguagePath& aPath,
+ TLanguage aCurrent, TLanguage aIdeal, const TLocale& aLocale);
+
+
+/**
+ * This class contains all the functions for working out the nearest language
+ * file. It can be derived from for test code purposes.
+ * @internalAll
+ */
+NONSHARABLE_CLASS(TNearestLanguageFileFinder)
+ {
+public:
+ TNearestLanguageFileFinder(const RFs& aFs);
+ TBool SetFileName(TFileName& aFileName);
+ TLanguage Language();
+ // put back the original suffix and drive letter
+ void RepairFileName();
+ // add the preset custom resource drive, if any, to iDrives.
+ TInt AddCustomResourceDrive();
+ // add all remaining drives to iDrives. iDrives must not have more than one
+ // drive in it on entry.
+ void AddAllDrives();
+ // Tries to append the language code to iFileName. This is 00..09 or just the number.
+ // If there was not enough space, EFalse is returned.
+ TBool AppendLanguageCode(TLanguage aLanguage);
+ // Search the drives in iDrives for the file named iFileName.
+ // iFileName must have a drive specifier, which will be overwritten.
+ TBool FindDrive();
+ // Search for files across all drives in all languages in the path plus the
+ // language-neutral file.
+ // On entry, iFileName should be the original name with a drive specifier
+ // minus the suffix. On return, iFileName will be untouched if EFalse is
+ // returned, but contain the result if ETrue is returned.
+ TBool FindLanguageAndDrive();
+ // Test whether the filename passed in matches the stem given + numbers
+ // added to the end. Returns the number if it does, or KErrNotFound if not.
+ // aFileName must not end in a digit.
+ static TInt LanguageNumberFromFile(const TDesC& aFileName, const TDesC& aStem);
+ // Find lowest numbered file that matches iFileName, which must be without
+ // its suffix.
+ TInt FindFirstLanguageFile(RFs&);
+ // Try each drive for any language files that match iFileName.
+ // iFileName must have a directory specifier and be without its suffix.
+ // returns KErrNotFound, KErrNone or error code.
+ TInt FindFirstLanguageFileAndDrive();
+
+ virtual TInt GetCustomResourceDriveNumber() const;
+
+ virtual TInt FileExists(const TDesC& aFileName) const;
+ // return our member that is our directory scanning class
+ virtual RDirectoryScanner& DirectoryScanner();
+ virtual ~TNearestLanguageFileFinder() {}
+
+private:
+ TInt CountDigitsFromEnd(const TDesC& aFilename);
+ TInt CountDigitsFromEndInSuffix (const TDesC& aFilename);
+
+public:
+ const RFs& iFs;
+ TFileName* iFileName;
+ TLanguage iLanguage;
+ TBuf<26> iDrives;
+ TLanguagePath iPath;
+ TBuf<KMaxSuffixLength> iSuffix;
+ TInt iInitialDriveLetter;
+ // length minus the removed suffix
+ TInt iOriginalBaseLength;
+ // length plus added drive letter minus removed suffix
+ TInt iBaseLength;
+ RRealDirectoryScanner iDirScanner;
+ };
+
+#endif // __LANGUTILIMPL_H__
+