/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* ***** BEGIN LICENSE BLOCK ***** * Version: MPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Mozilla Public License Version * 1.1 (the "License"); you may not use this file except in compliance with * the License. You may obtain a copy of the License at * http://www.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. * * The Original Code is Mozilla Communicator client code. * * The Initial Developer of the Original Code is * Netscape Communications Corporation. * Portions created by the Initial Developer are Copyright (C) 1998 * the Initial Developer. All Rights Reserved. * * Contributor(s): * * Alternatively, the contents of this file may be used under the terms of * either of the GNU General Public License Version 2 or later (the "GPL"), * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), * in which case the provisions of the GPL or the LGPL are applicable instead * of those above. If you wish to allow use of your version of this file only * under the terms of either the GPL or the LGPL, and not to allow others to * use your version of this file under the terms of the MPL, indicate your * decision by deleting the provisions above and replace them with the notice * and other provisions required by the GPL or the LGPL. If you do not delete * the provisions above, a recipient may use your version of this file under * the terms of any one of the MPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** */ #include "nsUCConstructors.h" #include "nsUnicodeToLangBoxArabic8.h" #include "nsISupports.h" static const unsigned char uni2lbox [] = { 0xC1, /* FE80 */ 0xC2 , 0xC2 , 0xC3 , 0xC3 , 0xC4 , 0xC4 , 0xC5 , 0xC5 , 0x9F , 0xC6 , 0xC0 , 0xC0 , 0xC7 , 0xC7 , 0xC8 , 0xC8 , /* FE90 */ 0xEB , 0xEB , 0xC9 , 0x8E , /* START TAA MARBUTA FINAL */ 0xCA , 0xCA , 0xEC , 0xEC , 0xCB , 0xCB , 0xED , 0xED , 0xCC , 0xCC , 0xEE , 0xEE , 0xCD , 0xCD , 0xEF , 0xEF , 0xCE , 0xCE , 0xF0 , 0xF0 , 0xCF , 0xCF , 0xD0 , 0xD0 , 0xD1 , 0xD1 , 0xD2 , 0xD2 , 0xD3 , 0x8F , 0xF1 , 0xF1 , 0xD4 , 0x90 , 0xF2 , 0xF2 , 0xD5 , 0x91 , 0xF3 , 0xF3 , 0xD6 , 0x92 , 0xF4 , 0xF4 , 0xD7 , 0xD7 , 0x93 , 0x93 , 0xD8 , 0xD8 , 0x94 , 0x94 , 0xD9 , 0x96 , 0xF5 , 0x95 , 0xDA , 0x98 , 0xF6 , 0x97 , 0xE1 , 0xE1 , 0xF7 , 0x99 , 0xE2 , 0xE2 , 0xF8 , 0x9A , 0xE3 , 0xE3 , 0xF9 , 0x9B , 0xE4 , 0xE4 , 0xFA , 0xFA , 0xE5 , 0xE5 , 0xFB , 0xFB , 0xE6 , 0xE6 , 0xFC , 0xFC , 0xE7 , 0x9D , 0xFD , 0x9C , 0xE8 , 0xE8 , 0x8D , 0xE9 , 0x9E , 0xEA , 0xFE , 0xFE /* FEF4 */ }; /** * The following are the Unicode Lam-Alef ligatures: * * FEF5;ARABIC LIGATURE LAM WITH ALEF WITH MADDA ABOVE ISOLATED FORM * FEF6;ARABIC LIGATURE LAM WITH ALEF WITH MADDA ABOVE FINAL FORM * FEF7;ARABIC LIGATURE LAM WITH ALEF WITH HAMZA ABOVE ISOLATED FORM * FEF8;ARABIC LIGATURE LAM WITH ALEF WITH HAMZA ABOVE FINAL FORM * FEF9;ARABIC LIGATURE LAM WITH ALEF WITH HAMZA BELOW ISOLATED FORM * FEFA;ARABIC LIGATURE LAM WITH ALEF WITH HAMZA BELOW FINAL FORM * FEFB;ARABIC LIGATURE LAM WITH ALEF ISOLATED FORM * FEFC;ARABIC LIGATURE LAM WITH ALEF FINAL FORM * * In the Langbox 8x encoding, they have to be split into separate glyphs: * * 0xA1 ARABIC LIGATURE ALEF OF LAM ALEF * 0xA2 ARABIC LIGATURE MADDA ON ALEF OF LAM ALEF * 0xA3 ARABIC LIGATURE HAMZA ON ALEF OF LAM ALEF * 0xA4 ARABIC LIGATURE HAMZA UNDER ALEF OF LAM ALEF * 0xA5 ARABIC LIGATURE LAM OF LAM ALEF INITIAL FORM * 0xA6 ARABIC LIGATURE LAM OF LAM ALEF MEDIAL FORM */ static const unsigned char lboxAlefs[] = { 0xA2, 0xA3, 0xA4, 0xA1 }; static const unsigned char lboxLams[] = { 0xA5, 0xA6 }; NS_IMETHODIMP nsUnicodeToLangBoxArabic8::Convert( const PRUnichar * aSrc, PRInt32 * aSrcLength, char * aDest, PRInt32 * aDestLength) { char* dest = aDest; PRInt32 inlen = 0; while (inlen < *aSrcLength) { PRUnichar aChar = aSrc[inlen]; if((aChar >= 0x0660) && (aChar <=0x0669)) { /* Hindu Numerals */ *dest++ = (char)(aChar - 0x0660 + 0xB0); } else if ((aChar >= 0x064B) && (aChar <= 0x0652)) { *dest++ = (char)(aChar - 0x64B + 0xA8); } else if(0x060C == aChar) { *dest++ = (char)0xBA; } else if(0x061B == aChar) { *dest++ = (char)0xBB; } else if(0x061F == aChar) { *dest++ = (char)0xBF; } else if(0x0640 == aChar) { *dest++ = (char)0xE0; } else if ((aChar>=0xFE80) && (aChar <= 0xFEF4)) { *dest++ = uni2lbox[aChar-0xFE80]; } else if ((aChar >=0xFEF5) && (aChar <= 0xFEFC)) { PRUint8 lamAlefType = aChar - 0xFEF5; // first map to 0-7 range, PRUint8 alefType = (lamAlefType & 6) >> 1; // then the high 2 bits give us the type of alef PRUint8 lamType = lamAlefType & 1; // and the low bits give us the type of lam *dest++ = lboxAlefs[alefType]; *dest++ = lboxLams[lamType]; } else if ((aChar >=0x0001) && (aChar <= 0x007F)) { *dest++ = (char) (aChar & 0x7F); } else { // do nothing } inlen++; } *aDestLength = dest - aDest; return NS_OK; } NS_IMETHODIMP nsUnicodeToLangBoxArabic8::GetMaxLength( const PRUnichar * aSrc, PRInt32 aSrcLength, PRInt32 * aDestLength) { *aDestLength = 2*aSrcLength; return NS_OK; } NS_IMETHODIMP nsUnicodeToLangBoxArabic8::Finish( char * aDest, PRInt32 * aDestLength) { *aDestLength=0; return NS_OK; } NS_IMETHODIMP nsUnicodeToLangBoxArabic8::Reset() { return NS_OK; } NS_IMETHODIMP nsUnicodeToLangBoxArabic8::SetOutputErrorBehavior( PRInt32 aBehavior, nsIUnicharEncoder * aEncoder, PRUnichar aChar) { return NS_ERROR_NOT_IMPLEMENTED; } NS_IMETHODIMP nsUnicodeToLangBoxArabic8::FillInfo(PRUint32* aInfo) { PRUnichar i; SET_REPRESENTABLE(aInfo, 0x060c); SET_REPRESENTABLE(aInfo, 0x061b); SET_REPRESENTABLE(aInfo, 0x061f); for(i=0x0621;i<=0x063a;i++) SET_REPRESENTABLE(aInfo, i); for(i=0x0640;i<=0x0652;i++) SET_REPRESENTABLE(aInfo, i); for(i=0x0660;i<=0x0669;i++) SET_REPRESENTABLE(aInfo, i); // Arabic Pres Form-B for(i=0xFE80; i < 0xFEFD;i++) SET_REPRESENTABLE(aInfo, i); // ASCII range for(i=0x0000; i < 0x007f;i++) SET_REPRESENTABLE(aInfo, i); return NS_OK; }