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nsUnicodeToTSCII.h
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00004 /* ***** BEGIN LICENSE BLOCK *****
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00007  * The contents of this file are subject to the Mozilla Public License Version
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00012  * Software distributed under the License is distributed on an "AS IS" basis,
00013  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00014  * for the specific language governing rights and limitations under the
00015  * License.
00016  *
00017  * The Original Code is Mozilla Communicator client code.
00018  *
00019  * The Initial Developer of the Original Code is
00020  * Netscape Communications Corp.
00021  * Portions created by the Initial Developer are Copyright (C) 1998, 2003
00022  * the Initial Developer. All Rights Reserved.
00023  *
00024  * Contributor(s):
00025  *   Jungshik Shin <jshin@mailaps.org>.
00026  *
00027  * Alternatively, the contents of this file may be used under the terms of
00028  * either the GNU General Public License Version 2 or later (the "GPL"), or
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00040 
00041 #ifndef nsUnicodeToTSCII_h___
00042 #define nsUnicodeToTSCII_h___
00043 
00044 #include "nsCOMPtr.h"
00045 #include "nsISupports.h"
00046 #include "nsIUnicodeEncoder.h"
00047 #include "nsICharRepresentable.h"
00048 
00049 //----------------------------------------------------------------------
00050 // Class nsUnicodeToTSCII [declaration]
00051 
00052 class nsUnicodeToTSCII : public nsIUnicodeEncoder, public nsICharRepresentable
00053 {
00054 
00055 NS_DECL_ISUPPORTS
00056 
00057 public:
00058   nsUnicodeToTSCII() { mBuffer = 0; };
00059   virtual ~nsUnicodeToTSCII() {};
00060 
00061   NS_IMETHOD Convert(const PRUnichar * aSrc, PRInt32 * aSrcLength,
00062                      char * aDest, PRInt32 * aDestLength);
00063 
00064   NS_IMETHOD Finish(char * aDest, PRInt32 * aDestLength);
00065 
00066   NS_IMETHOD GetMaxLength(const PRUnichar * aSrc, PRInt32 aSrcLength,
00067                           PRInt32 * aDestLength);
00068 
00069   NS_IMETHOD Reset();
00070 
00071   NS_IMETHOD SetOutputErrorBehavior(PRInt32 aBehavior,
00072                                     nsIUnicharEncoder * aEncoder, 
00073                                     PRUnichar aChar);
00074 
00075   NS_IMETHOD FillInfo(PRUint32* aInfo);
00076 
00077 private:
00078   PRUint32 mBuffer; // buffer for character(s) to be combined with the following
00079                     // character. Up to 4 single byte characters can be 
00080                     // stored. 
00081 };
00082 
00083 #define CHAR_BUFFER_SIZE 2048
00084 
00085 //----------------------------------------------------------------------
00086 // Class nsUnicodeToTamilTTF [declaration]
00087 
00088 class nsUnicodeToTamilTTF : public nsUnicodeToTSCII
00089 {
00090   NS_DECL_ISUPPORTS_INHERITED
00091 
00092 public:
00093   nsUnicodeToTamilTTF() : nsUnicodeToTSCII() {};
00094   virtual ~nsUnicodeToTamilTTF() {};
00095 
00096   NS_IMETHOD Convert      (const PRUnichar * aSrc, PRInt32 * aSrcLength,
00097                            char * aDest, PRInt32 * aDestLength);
00098   NS_IMETHOD GetMaxLength (const PRUnichar * aSrc, PRInt32  aSrcLength,
00099                            PRInt32 * aDestLength);
00100 
00101   NS_IMETHOD SetOutputErrorBehavior (PRInt32 aBehavior, 
00102                                      nsIUnicharEncoder *aEncoder, 
00103                                      PRUnichar aChar);
00104 
00105 private:
00106   char mStaticBuffer[CHAR_BUFFER_SIZE];
00107   PRInt32 mErrBehavior;
00108   PRUnichar mErrChar;
00109   nsCOMPtr<nsIUnicharEncoder> mErrEncoder;
00110 };
00111 
00112 #endif /* nsUnicodeToTSCII_h___ */