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Move pack methods shared between JRuby and Truffle into a separate cl…
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,100 @@ | ||
| /***** BEGIN LICENSE BLOCK ***** | ||
| * Version: EPL 1.0/GPL 2.0/LGPL 2.1 | ||
| * | ||
| * The contents of this file are subject to the Eclipse Public | ||
| * License Version 1.0 (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.eclipse.org/legal/epl-v10.html | ||
| * | ||
| * 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. | ||
| * | ||
| * Copyright (C) 2002-2004 Jan Arne Petersen <jpetersen@uni-bonn.de> | ||
| * Copyright (C) 2002-2004 Anders Bengtsson <ndrsbngtssn@yahoo.se> | ||
| * Copyright (C) 2003-2004 Thomas E Enebo <enebo@acm.org> | ||
| * Copyright (C) 2004 Charles O Nutter <headius@headius.com> | ||
| * Copyright (C) 2004 Stefan Matthias Aust <sma@3plus4.de> | ||
| * Copyright (C) 2005 Derek Berner <derek.berner@state.nm.us> | ||
| * Copyright (C) 2006 Evan Buswell <ebuswell@gmail.com> | ||
| * Copyright (C) 2007 Nick Sieger <nicksieger@gmail.com> | ||
| * Copyright (C) 2009 Joseph LaFata <joe@quibb.org> | ||
| * | ||
| * 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 EPL, 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 EPL, the GPL or the LGPL. | ||
| ***** END LICENSE BLOCK *****/ | ||
| package org.jruby.util; | ||
|
|
||
| public class PackUtils { | ||
|
|
||
| private static final byte[] hex_table; | ||
|
|
||
| static { | ||
| hex_table = ByteList.plain("0123456789ABCDEF"); | ||
| } | ||
|
|
||
| /** | ||
| * encodes a String with the Quoted printable, MIME encoding (see RFC2045). | ||
| * appends the result of the encoding in a StringBuffer | ||
| * @param io2Append The StringBuffer which should receive the result | ||
| * @param i2Encode The String to encode | ||
| * @param iLength The max number of characters to encode | ||
| * @return the io2Append buffer | ||
| **/ | ||
| public static ByteList qpencode(ByteList io2Append, ByteList i2Encode, int iLength) { | ||
| io2Append.ensure(1024); | ||
| int lCurLineLength = 0; | ||
| int lPrevChar = -1; | ||
| byte[] l2Encode = i2Encode.getUnsafeBytes(); | ||
| try { | ||
| int end = i2Encode.getBegin() + i2Encode.getRealSize(); | ||
| for (int i = i2Encode.getBegin(); i < end; i++) { | ||
| int lCurChar = l2Encode[i] & 0xff; | ||
| if (lCurChar > 126 || (lCurChar < 32 && lCurChar != '\n' && lCurChar != '\t') || lCurChar == '=') { | ||
| io2Append.append('='); | ||
| io2Append.append(hex_table[lCurChar >>> 4]); | ||
| io2Append.append(hex_table[lCurChar & 0x0f]); | ||
| lCurLineLength += 3; | ||
| lPrevChar = -1; | ||
| } else if (lCurChar == '\n') { | ||
| if (lPrevChar == ' ' || lPrevChar == '\t') { | ||
| io2Append.append('='); | ||
| io2Append.append(lCurChar); | ||
| } | ||
| io2Append.append(lCurChar); | ||
| lCurLineLength = 0; | ||
| lPrevChar = lCurChar; | ||
| } else { | ||
| io2Append.append(lCurChar); | ||
| lCurLineLength++; | ||
| lPrevChar = lCurChar; | ||
| } | ||
| if (lCurLineLength > iLength) { | ||
| io2Append.append('='); | ||
| io2Append.append('\n'); | ||
| lCurLineLength = 0; | ||
| lPrevChar = '\n'; | ||
| } | ||
| } | ||
| } catch (ArrayIndexOutOfBoundsException e) { | ||
| //normal exit, this should be faster than a test at each iterations for string with more than | ||
| //about 40 char | ||
| } | ||
|
|
||
| if (lCurLineLength > 0) { | ||
| io2Append.append('='); | ||
| io2Append.append('\n'); | ||
| } | ||
| return io2Append; | ||
| } | ||
| } |
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