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<h2><a name="content"></a>libkmime</h2>
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<h1>kmime_codec_qp.cpp</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* -*- c++ -*-</span>
<a name="l00002"></a>00002 <span class="comment"> kmime_codec_qp.cpp</span>
<a name="l00003"></a>00003 <span class="comment"></span>
<a name="l00004"></a>00004 <span class="comment"> This file is part of KMime, the KDE internet mail/usenet news message library.</span>
<a name="l00005"></a>00005 <span class="comment"> Copyright (c) 2002 Marc Mutz <mutz@kde.org></span>
<a name="l00006"></a>00006 <span class="comment"></span>
<a name="l00007"></a>00007 <span class="comment"> KMime is free software; you can redistribute it and/or modify it</span>
<a name="l00008"></a>00008 <span class="comment"> under the terms of the GNU General Public License, version 2, as</span>
<a name="l00009"></a>00009 <span class="comment"> published by the Free Software Foundation.</span>
<a name="l00010"></a>00010 <span class="comment"></span>
<a name="l00011"></a>00011 <span class="comment"> KMime is distributed in the hope that it will be useful, but</span>
<a name="l00012"></a>00012 <span class="comment"> WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00013"></a>00013 <span class="comment"> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
<a name="l00014"></a>00014 <span class="comment"> General Public License for more details.</span>
<a name="l00015"></a>00015 <span class="comment"></span>
<a name="l00016"></a>00016 <span class="comment"> You should have received a copy of the GNU General Public License</span>
<a name="l00017"></a>00017 <span class="comment"> along with this library; if not, write to the Free Software</span>
<a name="l00018"></a>00018 <span class="comment"> Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA</span>
<a name="l00019"></a>00019 <span class="comment"></span>
<a name="l00020"></a>00020 <span class="comment"> In addition, as a special exception, the copyright holders give</span>
<a name="l00021"></a>00021 <span class="comment"> permission to link the code of this library with any edition of</span>
<a name="l00022"></a>00022 <span class="comment"> the Qt library by Trolltech AS, Norway (or with modified versions</span>
<a name="l00023"></a>00023 <span class="comment"> of Qt that use the same license as Qt), and distribute linked</span>
<a name="l00024"></a>00024 <span class="comment"> combinations including the two. You must obey the GNU General</span>
<a name="l00025"></a>00025 <span class="comment"> Public License in all respects for all of the code used other than</span>
<a name="l00026"></a>00026 <span class="comment"> Qt. If you modify this file, you may extend this exception to</span>
<a name="l00027"></a>00027 <span class="comment"> your version of the file, but you are not obligated to do so. If</span>
<a name="l00028"></a>00028 <span class="comment"> you do not wish to do so, delete this exception statement from</span>
<a name="l00029"></a>00029 <span class="comment"> your version.</span>
<a name="l00030"></a>00030 <span class="comment">*/</span>
<a name="l00031"></a>00031
<a name="l00032"></a>00032 <span class="preprocessor">#include "kmime_codec_qp.h"</span>
<a name="l00033"></a>00033
<a name="l00034"></a>00034 <span class="preprocessor">#include "kmime_util.h"</span>
<a name="l00035"></a>00035
<a name="l00036"></a>00036 <span class="preprocessor">#include <kdebug.h></span>
<a name="l00037"></a>00037
<a name="l00038"></a>00038 <span class="preprocessor">#include <cassert></span>
<a name="l00039"></a>00039
<a name="l00040"></a>00040 <span class="keyword">using namespace </span>KMime;
<a name="l00041"></a>00041
<a name="l00042"></a>00042 <span class="keyword">namespace </span>KMime {
<a name="l00043"></a>00043
<a name="l00044"></a>00044 <span class="comment">// some helpful functions:</span>
<a name="l00045"></a>00045
<a name="l00046"></a>00046 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">char</span> binToHex( uchar value ) {
<a name="l00047"></a>00047 <span class="keywordflow">if</span> ( value > 9 )
<a name="l00048"></a>00048 <span class="keywordflow">return</span> value + <span class="charliteral">'A'</span> - 10;
<a name="l00049"></a>00049 <span class="keywordflow">else</span>
<a name="l00050"></a>00050 <span class="keywordflow">return</span> value + <span class="charliteral">'0'</span>;
<a name="l00051"></a>00051 }
<a name="l00052"></a>00052
<a name="l00053"></a>00053 <span class="keyword">static</span> <span class="keyword">inline</span> uchar highNibble( uchar ch ) {
<a name="l00054"></a>00054 <span class="keywordflow">return</span> ch >> 4;
<a name="l00055"></a>00055 }
<a name="l00056"></a>00056
<a name="l00057"></a>00057 <span class="keyword">static</span> <span class="keyword">inline</span> uchar lowNibble( uchar ch ) {
<a name="l00058"></a>00058 <span class="keywordflow">return</span> ch & 0xF;
<a name="l00059"></a>00059 }
<a name="l00060"></a>00060
<a name="l00061"></a>00061 <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">bool</span> keep( uchar ch ) {
<a name="l00062"></a>00062 <span class="comment">// no CTLs, except HT and not '?'</span>
<a name="l00063"></a>00063 <span class="keywordflow">return</span> !( ch < <span class="charliteral">' '</span> && ch != <span class="charliteral">'\t'</span> || ch == <span class="charliteral">'?'</span> );
<a name="l00064"></a>00064 }
<a name="l00065"></a>00065
<a name="l00066"></a>00066 <span class="comment">//</span>
<a name="l00067"></a>00067 <span class="comment">// QuotedPrintableCodec</span>
<a name="l00068"></a>00068 <span class="comment">//</span>
<a name="l00069"></a>00069
<a name="l00070"></a>00070 <span class="keyword">class </span>QuotedPrintableEncoder : <span class="keyword">public</span> <a class="code" href="classKMime_1_1Encoder.html" title="Stateful encoder class, modelled after QTextEncoder.">Encoder</a> {
<a name="l00071"></a>00071 <span class="keywordtype">char</span> mInputBuffer[16];
<a name="l00072"></a>00072 uchar mCurrentLineLength; <span class="comment">// 0..76</span>
<a name="l00073"></a>00073 uchar mAccu;
<a name="l00074"></a>00074 uint mInputBufferReadCursor : 4; <span class="comment">// 0..15</span>
<a name="l00075"></a>00075 uint mInputBufferWriteCursor : 4; <span class="comment">// 0..15</span>
<a name="l00076"></a>00076 <span class="keyword">enum</span> {
<a name="l00077"></a>00077 Never, AtBOL, Definitely
<a name="l00078"></a>00078 } mAccuNeedsEncoding : 2;
<a name="l00079"></a>00079 <span class="keywordtype">bool</span> mSawLineEnd : 1;
<a name="l00080"></a>00080 <span class="keywordtype">bool</span> mSawCR : 1;
<a name="l00081"></a>00081 <span class="keywordtype">bool</span> mFinishing : 1;
<a name="l00082"></a>00082 <span class="keywordtype">bool</span> mFinished : 1;
<a name="l00083"></a>00083 <span class="keyword">protected</span>:
<a name="l00084"></a>00084 <span class="keyword">friend</span> <span class="keyword">class </span>QuotedPrintableCodec;
<a name="l00085"></a>00085 QuotedPrintableEncoder( <span class="keywordtype">bool</span> withCRLF=<span class="keyword">false</span> )
<a name="l00086"></a>00086 : <a class="code" href="classKMime_1_1Encoder.html" title="Stateful encoder class, modelled after QTextEncoder.">Encoder</a>( withCRLF ), mCurrentLineLength(0), mAccu(0),
<a name="l00087"></a>00087 mInputBufferReadCursor(0), mInputBufferWriteCursor(0),
<a name="l00088"></a>00088 mAccuNeedsEncoding(Never),
<a name="l00089"></a>00089 mSawLineEnd(false), mSawCR(false), mFinishing(false),
<a name="l00090"></a>00090 mFinished(false) {}
<a name="l00091"></a>00091
<a name="l00092"></a>00092 <span class="keywordtype">bool</span> needsEncoding( uchar ch ) {
<a name="l00093"></a>00093 <span class="keywordflow">return</span> ( ch > <span class="charliteral">'~'</span> || ch < <span class="charliteral">' '</span> && ch != <span class="charliteral">'\t'</span> || ch == <span class="charliteral">'='</span> );
<a name="l00094"></a>00094 }
<a name="l00095"></a>00095 <span class="keywordtype">bool</span> needsEncodingAtEOL( uchar ch ) {
<a name="l00096"></a>00096 <span class="keywordflow">return</span> ( ch == <span class="charliteral">' '</span> || ch == <span class="charliteral">'\t'</span> );
<a name="l00097"></a>00097 }
<a name="l00098"></a>00098 <span class="keywordtype">bool</span> needsEncodingAtBOL( uchar ch ) {
<a name="l00099"></a>00099 <span class="keywordflow">return</span> ( ch == <span class="charliteral">'F'</span> || ch == <span class="charliteral">'.'</span> || ch == <span class="charliteral">'-'</span> );
<a name="l00100"></a>00100 }
<a name="l00101"></a>00101 <span class="keywordtype">bool</span> fillInputBuffer( <span class="keyword">const</span> <span class="keywordtype">char</span>* & scursor, <span class="keyword">const</span> <span class="keywordtype">char</span> * <span class="keyword">const</span> send );
<a name="l00102"></a>00102 <span class="keywordtype">bool</span> processNextChar();
<a name="l00103"></a>00103 <span class="keywordtype">void</span> createOutputBuffer( <span class="keywordtype">char</span>* & dcursor, <span class="keyword">const</span> <span class="keywordtype">char</span> * <span class="keyword">const</span> dend );
<a name="l00104"></a>00104 <span class="keyword">public</span>:
<a name="l00105"></a>00105 <span class="keyword">virtual</span> ~QuotedPrintableEncoder() {}
<a name="l00106"></a>00106
<a name="l00107"></a>00107 <span class="keywordtype">bool</span> encode( <span class="keyword">const</span> <span class="keywordtype">char</span>* & scursor, <span class="keyword">const</span> <span class="keywordtype">char</span> * <span class="keyword">const</span> send,
<a name="l00108"></a>00108 <span class="keywordtype">char</span>* & dcursor, <span class="keyword">const</span> <span class="keywordtype">char</span> * <span class="keyword">const</span> dend );
<a name="l00109"></a>00109
<a name="l00110"></a>00110 <span class="keywordtype">bool</span> finish( <span class="keywordtype">char</span>* & dcursor, <span class="keyword">const</span> <span class="keywordtype">char</span> * <span class="keyword">const</span> dend );
<a name="l00111"></a>00111 };
<a name="l00112"></a>00112
<a name="l00113"></a>00113
<a name="l00114"></a>00114 <span class="keyword">class </span>QuotedPrintableDecoder : <span class="keyword">public</span> <a class="code" href="classKMime_1_1Decoder.html" title="Stateful decoder class, modelled after QTextDecoder.">Decoder</a> {
<a name="l00115"></a>00115 <span class="keyword">const</span> <span class="keywordtype">char</span> mEscapeChar;
<a name="l00116"></a>00116 <span class="keywordtype">char</span> mBadChar;
<a name="l00118"></a>00118 uchar mAccu;
<a name="l00128"></a>00128 <span class="keyword">const</span> <span class="keywordtype">bool</span> mQEncoding;
<a name="l00129"></a>00129 <span class="keywordtype">bool</span> mInsideHexChar;
<a name="l00130"></a>00130 <span class="keywordtype">bool</span> mFlushing;
<a name="l00131"></a>00131 <span class="keywordtype">bool</span> mExpectLF;
<a name="l00132"></a>00132 <span class="keywordtype">bool</span> mHaveAccu;
<a name="l00133"></a>00133 <span class="keyword">protected</span>:
<a name="l00134"></a>00134 <span class="keyword">friend</span> <span class="keyword">class </span>QuotedPrintableCodec;
<a name="l00135"></a>00135 <span class="keyword">friend</span> <span class="keyword">class </span>Rfc2047QEncodingCodec;
<a name="l00136"></a>00136 <span class="keyword">friend</span> <span class="keyword">class </span>Rfc2231EncodingCodec;
<a name="l00137"></a>00137 QuotedPrintableDecoder( <span class="keywordtype">bool</span> withCRLF=<span class="keyword">false</span>,
<a name="l00138"></a>00138 <span class="keywordtype">bool</span> aQEncoding=<span class="keyword">false</span>, <span class="keywordtype">char</span> aEscapeChar=<span class="charliteral">'='</span> )
<a name="l00139"></a>00139 : <a class="code" href="classKMime_1_1Decoder.html" title="Stateful decoder class, modelled after QTextDecoder.">Decoder</a>( withCRLF ),
<a name="l00140"></a>00140 mEscapeChar(aEscapeChar),
<a name="l00141"></a>00141 mBadChar(0),
<a name="l00142"></a>00142 mAccu(0),
<a name="l00143"></a>00143 mQEncoding(aQEncoding),
<a name="l00144"></a>00144 mInsideHexChar(false),
<a name="l00145"></a>00145 mFlushing(false),
<a name="l00146"></a>00146 mExpectLF(false),
<a name="l00147"></a>00147 mHaveAccu(false) {}
<a name="l00148"></a>00148 <span class="keyword">public</span>:
<a name="l00149"></a>00149 <span class="keyword">virtual</span> ~QuotedPrintableDecoder() {}
<a name="l00150"></a>00150
<a name="l00151"></a>00151 <span class="keywordtype">bool</span> decode( <span class="keyword">const</span> <span class="keywordtype">char</span>* & scursor, <span class="keyword">const</span> <span class="keywordtype">char</span> * <span class="keyword">const</span> send,
<a name="l00152"></a>00152 <span class="keywordtype">char</span>* & dcursor, <span class="keyword">const</span> <span class="keywordtype">char</span> * <span class="keyword">const</span> dend );
<a name="l00153"></a>00153 <span class="comment">// ### really no finishing needed???</span>
<a name="l00154"></a>00154 <span class="keywordtype">bool</span> finish( <span class="keywordtype">char</span>* &, <span class="keyword">const</span> <span class="keywordtype">char</span> * <span class="keyword">const</span> ) { <span class="keywordflow">return</span> <span class="keyword">true</span>; }
<a name="l00155"></a>00155 };
<a name="l00156"></a>00156
<a name="l00157"></a>00157
<a name="l00158"></a>00158 <span class="keyword">class </span>Rfc2047QEncodingEncoder : <span class="keyword">public</span> <a class="code" href="classKMime_1_1Encoder.html" title="Stateful encoder class, modelled after QTextEncoder.">Encoder</a> {
<a name="l00159"></a>00159 uchar mAccu;
<a name="l00160"></a>00160 uchar mStepNo;
<a name="l00161"></a>00161 <span class="keyword">const</span> <span class="keywordtype">char</span> mEscapeChar;
<a name="l00162"></a>00162 <span class="keywordtype">bool</span> mInsideFinishing : 1;
<a name="l00163"></a>00163 <span class="keyword">protected</span>:
<a name="l00164"></a>00164 <span class="keyword">friend</span> <span class="keyword">class </span>Rfc2047QEncodingCodec;
<a name="l00165"></a>00165 <span class="keyword">friend</span> <span class="keyword">class </span>Rfc2231EncodingCodec;
<a name="l00166"></a>00166 Rfc2047QEncodingEncoder( <span class="keywordtype">bool</span> withCRLF=<span class="keyword">false</span>, <span class="keywordtype">char</span> aEscapeChar=<span class="charliteral">'='</span> )
<a name="l00167"></a>00167 : <a class="code" href="classKMime_1_1Encoder.html" title="Stateful encoder class, modelled after QTextEncoder.">Encoder</a>( withCRLF ),
<a name="l00168"></a>00168 mAccu(0), mStepNo(0), mEscapeChar( aEscapeChar ),
<a name="l00169"></a>00169 mInsideFinishing( false )
<a name="l00170"></a>00170 {
<a name="l00171"></a>00171 <span class="comment">// else an optimization in ::encode might break.</span>
<a name="l00172"></a>00172 assert( aEscapeChar == <span class="charliteral">'='</span> || aEscapeChar == <span class="charliteral">'%'</span> );
<a name="l00173"></a>00173 }
<a name="l00174"></a>00174
<a name="l00175"></a>00175 <span class="comment">// this code assumes that isEText( mEscapeChar ) == false!</span>
<a name="l00176"></a>00176 <span class="keywordtype">bool</span> needsEncoding( uchar ch ) {
<a name="l00177"></a>00177 <span class="keywordflow">if</span> ( ch > <span class="charliteral">'z'</span> ) <span class="keywordflow">return</span> <span class="keyword">true</span>; <span class="comment">// {|}~ DEL and 8bit chars need</span>
<a name="l00178"></a>00178 <span class="keywordflow">if</span> ( !isEText( ch ) ) <span class="keywordflow">return</span> <span class="keyword">true</span>; <span class="comment">// all but a-zA-Z0-9!/*+- need, too</span>
<a name="l00179"></a>00179 <span class="keywordflow">if</span> ( mEscapeChar == <span class="charliteral">'%'</span> && ( ch == <span class="charliteral">'*'</span> || ch == <span class="charliteral">'/'</span> ) )
<a name="l00180"></a>00180 <span class="keywordflow">return</span> <span class="keyword">true</span>; <span class="comment">// not allowed in rfc2231 encoding</span>
<a name="l00181"></a>00181 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00182"></a>00182 }
<a name="l00183"></a>00183
<a name="l00184"></a>00184 <span class="keyword">public</span>:
<a name="l00185"></a>00185 <span class="keyword">virtual</span> ~Rfc2047QEncodingEncoder() {}
<a name="l00186"></a>00186
<a name="l00187"></a>00187 <span class="keywordtype">bool</span> encode( <span class="keyword">const</span> <span class="keywordtype">char</span>* & scursor, <span class="keyword">const</span> <span class="keywordtype">char</span> * <span class="keyword">const</span> send,
<a name="l00188"></a>00188 <span class="keywordtype">char</span>* & dcursor, <span class="keyword">const</span> <span class="keywordtype">char</span> * <span class="keyword">const</span> dend );
<a name="l00189"></a>00189 <span class="keywordtype">bool</span> finish( <span class="keywordtype">char</span>* & dcursor, <span class="keyword">const</span> <span class="keywordtype">char</span> * <span class="keyword">const</span> dend );
<a name="l00190"></a>00190 };
<a name="l00191"></a>00191
<a name="l00192"></a>00192 <span class="comment">// this doesn't access any member variables, so it can be defined static</span>
<a name="l00193"></a>00193 <span class="comment">// but then we can't call it from virtual functions</span>
<a name="l00194"></a>00194 <span class="keyword">static</span> <span class="keywordtype">int</span> QuotedPrintableDecoder_maxDecodedSizeFor( <span class="keywordtype">int</span> insize, <span class="keywordtype">bool</span> withCRLF ) {
<a name="l00195"></a>00195 <span class="comment">// all chars unencoded:</span>
<a name="l00196"></a>00196 <span class="keywordtype">int</span> result = insize;
<a name="l00197"></a>00197 <span class="comment">// but maybe all of them are \n and we need to make them \r\n :-o</span>
<a name="l00198"></a>00198 <span class="keywordflow">if</span> ( withCRLF )
<a name="l00199"></a>00199 result += insize;
<a name="l00200"></a>00200
<a name="l00201"></a>00201 <span class="comment">// there might be an accu plus escape</span>
<a name="l00202"></a>00202 result += 2;
<a name="l00203"></a>00203
<a name="l00204"></a>00204 <span class="keywordflow">return</span> result;
<a name="l00205"></a>00205 }
<a name="l00206"></a>00206
<a name="l00207"></a>00207 <a class="code" href="classKMime_1_1Encoder.html" title="Stateful encoder class, modelled after QTextEncoder.">Encoder</a> * QuotedPrintableCodec::makeEncoder( <span class="keywordtype">bool</span> withCRLF )<span class="keyword"> const </span>{
<a name="l00208"></a>00208 <span class="keywordflow">return</span> <span class="keyword">new</span> QuotedPrintableEncoder( withCRLF );
<a name="l00209"></a>00209 }
<a name="l00210"></a>00210
<a name="l00211"></a>00211 <a class="code" href="classKMime_1_1Decoder.html" title="Stateful decoder class, modelled after QTextDecoder.">Decoder</a> * QuotedPrintableCodec::makeDecoder( <span class="keywordtype">bool</span> withCRLF )<span class="keyword"> const </span>{
<a name="l00212"></a>00212 <span class="keywordflow">return</span> <span class="keyword">new</span> QuotedPrintableDecoder( withCRLF );
<a name="l00213"></a>00213 }
<a name="l00214"></a>00214
<a name="l00215"></a>00215 <span class="keywordtype">int</span> QuotedPrintableCodec::maxDecodedSizeFor( <span class="keywordtype">int</span> insize, <span class="keywordtype">bool</span> withCRLF )<span class="keyword"> const </span>{
<a name="l00216"></a>00216 <span class="keywordflow">return</span> QuotedPrintableDecoder_maxDecodedSizeFor(insize, withCRLF);
<a name="l00217"></a>00217 }
<a name="l00218"></a>00218
<a name="l00219"></a>00219 <a class="code" href="classKMime_1_1Encoder.html" title="Stateful encoder class, modelled after QTextEncoder.">Encoder</a> * Rfc2047QEncodingCodec::makeEncoder( <span class="keywordtype">bool</span> withCRLF )<span class="keyword"> const </span>{
<a name="l00220"></a>00220 <span class="keywordflow">return</span> <span class="keyword">new</span> Rfc2047QEncodingEncoder( withCRLF );
<a name="l00221"></a>00221 }
<a name="l00222"></a>00222
<a name="l00223"></a>00223 <a class="code" href="classKMime_1_1Decoder.html" title="Stateful decoder class, modelled after QTextDecoder.">Decoder</a> * Rfc2047QEncodingCodec::makeDecoder( <span class="keywordtype">bool</span> withCRLF )<span class="keyword"> const </span>{
<a name="l00224"></a>00224 <span class="keywordflow">return</span> <span class="keyword">new</span> QuotedPrintableDecoder( withCRLF, <span class="keyword">true</span> );
<a name="l00225"></a>00225 }
<a name="l00226"></a>00226
<a name="l00227"></a>00227 <span class="keywordtype">int</span> Rfc2047QEncodingCodec::maxDecodedSizeFor( <span class="keywordtype">int</span> insize, <span class="keywordtype">bool</span> withCRLF )<span class="keyword"> const </span>{
<a name="l00228"></a>00228 <span class="keywordflow">return</span> QuotedPrintableDecoder_maxDecodedSizeFor(insize, withCRLF);
<a name="l00229"></a>00229 }
<a name="l00230"></a>00230
<a name="l00231"></a>00231 <a class="code" href="classKMime_1_1Encoder.html" title="Stateful encoder class, modelled after QTextEncoder.">Encoder</a> * Rfc2231EncodingCodec::makeEncoder( <span class="keywordtype">bool</span> withCRLF )<span class="keyword"> const </span>{
<a name="l00232"></a>00232 <span class="keywordflow">return</span> <span class="keyword">new</span> Rfc2047QEncodingEncoder( withCRLF, <span class="charliteral">'%'</span> );
<a name="l00233"></a>00233 }
<a name="l00234"></a>00234
<a name="l00235"></a>00235 <a class="code" href="classKMime_1_1Decoder.html" title="Stateful decoder class, modelled after QTextDecoder.">Decoder</a> * Rfc2231EncodingCodec::makeDecoder( <span class="keywordtype">bool</span> withCRLF )<span class="keyword"> const </span>{
<a name="l00236"></a>00236 <span class="keywordflow">return</span> <span class="keyword">new</span> QuotedPrintableDecoder( withCRLF, <span class="keyword">true</span>, <span class="charliteral">'%'</span> );
<a name="l00237"></a>00237 }
<a name="l00238"></a>00238
<a name="l00239"></a>00239 <span class="keywordtype">int</span> Rfc2231EncodingCodec::maxDecodedSizeFor( <span class="keywordtype">int</span> insize, <span class="keywordtype">bool</span> withCRLF )<span class="keyword"> const </span>{
<a name="l00240"></a>00240 <span class="keywordflow">return</span> QuotedPrintableDecoder_maxDecodedSizeFor(insize, withCRLF);
<a name="l00241"></a>00241 }
<a name="l00242"></a>00242
<a name="l00243"></a>00243 <span class="comment">/********************************************************/</span>
<a name="l00244"></a>00244 <span class="comment">/********************************************************/</span>
<a name="l00245"></a>00245 <span class="comment">/********************************************************/</span>
<a name="l00246"></a>00246
<a name="l00247"></a>00247 <span class="keywordtype">bool</span> <a class="code" href="classKMime_1_1Decoder.html#1991c45377e59be92f31284e473e3514" title="Decode a chunk of data, maintaining state information between calls.">QuotedPrintableDecoder::decode</a>( <span class="keyword">const</span> <span class="keywordtype">char</span>* & scursor, <span class="keyword">const</span> <span class="keywordtype">char</span> * <span class="keyword">const</span> send,
<a name="l00248"></a>00248 <span class="keywordtype">char</span>* & dcursor, <span class="keyword">const</span> <span class="keywordtype">char</span> * <span class="keyword">const</span> dend ) {
<a name="l00249"></a>00249 <span class="keywordflow">if</span> ( mWithCRLF )
<a name="l00250"></a>00250 kdWarning() << <span class="stringliteral">"CRLF output for decoders isn't yet supported!"</span> << endl;
<a name="l00251"></a>00251
<a name="l00252"></a>00252 <span class="keywordflow">while</span> ( scursor != send && dcursor != dend ) {
<a name="l00253"></a>00253 <span class="keywordflow">if</span> ( mFlushing ) {
<a name="l00254"></a>00254 <span class="comment">// we have to flush chars in the aftermath of an decoding</span>
<a name="l00255"></a>00255 <span class="comment">// error. The way to request a flush is to</span>
<a name="l00256"></a>00256 <span class="comment">// - store the offending character in mBadChar and</span>
<a name="l00257"></a>00257 <span class="comment">// - set mFlushing to true.</span>
<a name="l00258"></a>00258 <span class="comment">// The supported cases are (H: hexchar, X: bad char):</span>
<a name="l00259"></a>00259 <span class="comment">// =X, =HX, CR</span>
<a name="l00260"></a>00260 <span class="comment">// mBadChar is only written out if it is not by itself illegal in</span>
<a name="l00261"></a>00261 <span class="comment">// quoted-printable (e.g. CTLs, 8Bits).</span>
<a name="l00262"></a>00262 <span class="comment">// A fast way to suppress mBadChar output is to set it to NUL.</span>
<a name="l00263"></a>00263 <span class="keywordflow">if</span> ( mInsideHexChar ) {
<a name="l00264"></a>00264 <span class="comment">// output '='</span>
<a name="l00265"></a>00265 *dcursor++ = mEscapeChar;
<a name="l00266"></a>00266 mInsideHexChar = <span class="keyword">false</span>;
<a name="l00267"></a>00267 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( mHaveAccu ) {
<a name="l00268"></a>00268 <span class="comment">// output the high nibble of the accumulator:</span>
<a name="l00269"></a>00269 *dcursor++ = binToHex( highNibble( mAccu ) );
<a name="l00270"></a>00270 mHaveAccu = <span class="keyword">false</span>;
<a name="l00271"></a>00271 mAccu = 0;
<a name="l00272"></a>00272 } <span class="keywordflow">else</span> {
<a name="l00273"></a>00273 <span class="comment">// output mBadChar</span>
<a name="l00274"></a>00274 assert( mAccu == 0 );
<a name="l00275"></a>00275 <span class="keywordflow">if</span> ( mBadChar ) {
<a name="l00276"></a>00276 <span class="keywordflow">if</span> ( mBadChar >= <span class="charliteral">'>'</span> && mBadChar <= <span class="charliteral">'~'</span> ||
<a name="l00277"></a>00277 mBadChar >= <span class="charliteral">'!'</span> && mBadChar <= <span class="charliteral">'<'</span> )
<a name="l00278"></a>00278 *dcursor++ = mBadChar;
<a name="l00279"></a>00279 mBadChar = 0;
<a name="l00280"></a>00280 }
<a name="l00281"></a>00281 mFlushing = <span class="keyword">false</span>;
<a name="l00282"></a>00282 }
<a name="l00283"></a>00283 <span class="keywordflow">continue</span>;
<a name="l00284"></a>00284 }
<a name="l00285"></a>00285 assert( mBadChar == 0 );
<a name="l00286"></a>00286
<a name="l00287"></a>00287 uchar ch = *scursor++;
<a name="l00288"></a>00288 uchar value = 255;
<a name="l00289"></a>00289
<a name="l00290"></a>00290 <span class="keywordflow">if</span> ( mExpectLF && ch != <span class="charliteral">'\n'</span> ) {
<a name="l00291"></a>00291 kdWarning() << <span class="stringliteral">"QuotedPrintableDecoder: "</span>
<a name="l00292"></a>00292 <span class="stringliteral">"illegally formed soft linebreak or lonely CR!"</span> << endl;
<a name="l00293"></a>00293 mInsideHexChar = <span class="keyword">false</span>;
<a name="l00294"></a>00294 mExpectLF = <span class="keyword">false</span>;
<a name="l00295"></a>00295 assert( mAccu == 0 );
<a name="l00296"></a>00296 }
<a name="l00297"></a>00297
<a name="l00298"></a>00298 <span class="keywordflow">if</span> ( mInsideHexChar ) {
<a name="l00299"></a>00299 <span class="comment">// next char(s) represent nibble instead of itself:</span>
<a name="l00300"></a>00300 <span class="keywordflow">if</span> ( ch <= <span class="charliteral">'9'</span> ) {
<a name="l00301"></a>00301 <span class="keywordflow">if</span> ( ch >= <span class="charliteral">'0'</span> ) {
<a name="l00302"></a>00302 value = ch - <span class="charliteral">'0'</span>;
<a name="l00303"></a>00303 } <span class="keywordflow">else</span> {
<a name="l00304"></a>00304 <span class="keywordflow">switch</span> ( ch ) {
<a name="l00305"></a>00305 <span class="keywordflow">case</span> <span class="charliteral">'\r'</span>:
<a name="l00306"></a>00306 mExpectLF = <span class="keyword">true</span>;
<a name="l00307"></a>00307 <span class="keywordflow">break</span>;
<a name="l00308"></a>00308 <span class="keywordflow">case</span> <span class="charliteral">'\n'</span>:
<a name="l00309"></a>00309 <span class="comment">// soft line break, but only if mAccu is NUL.</span>
<a name="l00310"></a>00310 <span class="keywordflow">if</span> ( !mHaveAccu ) {
<a name="l00311"></a>00311 mExpectLF = <span class="keyword">false</span>;
<a name="l00312"></a>00312 mInsideHexChar = <span class="keyword">false</span>;
<a name="l00313"></a>00313 <span class="keywordflow">break</span>;
<a name="l00314"></a>00314 }
<a name="l00315"></a>00315 <span class="comment">// else fall through</span>
<a name="l00316"></a>00316 <span class="keywordflow">default</span>:
<a name="l00317"></a>00317 kdWarning() << <span class="stringliteral">"QuotedPrintableDecoder: "</span>
<a name="l00318"></a>00318 <span class="stringliteral">"illegally formed hex char! Outputting verbatim."</span> << endl;
<a name="l00319"></a>00319 mBadChar = ch;
<a name="l00320"></a>00320 mFlushing = <span class="keyword">true</span>;
<a name="l00321"></a>00321 }
<a name="l00322"></a>00322 <span class="keywordflow">continue</span>;
<a name="l00323"></a>00323 }
<a name="l00324"></a>00324 } <span class="keywordflow">else</span> { <span class="comment">// ch > '9'</span>
<a name="l00325"></a>00325 <span class="keywordflow">if</span> ( ch <= <span class="charliteral">'F'</span> ) {
<a name="l00326"></a>00326 <span class="keywordflow">if</span> ( ch >= <span class="charliteral">'A'</span> ) {
<a name="l00327"></a>00327 value = 10 + ch - <span class="charliteral">'A'</span>;
<a name="l00328"></a>00328 } <span class="keywordflow">else</span> { <span class="comment">// [:-@]</span>
<a name="l00329"></a>00329 mBadChar = ch;
<a name="l00330"></a>00330 mFlushing = <span class="keyword">true</span>;
<a name="l00331"></a>00331 <span class="keywordflow">continue</span>;
<a name="l00332"></a>00332 }
<a name="l00333"></a>00333 } <span class="keywordflow">else</span> { <span class="comment">// ch > 'F'</span>
<a name="l00334"></a>00334 <span class="keywordflow">if</span> ( ch <= 'f' && ch >= <span class="charliteral">'a'</span> ) {
<a name="l00335"></a>00335 value = 10 + ch - <span class="charliteral">'a'</span>;
<a name="l00336"></a>00336 } <span class="keywordflow">else</span> {
<a name="l00337"></a>00337 mBadChar = ch;
<a name="l00338"></a>00338 mFlushing = <span class="keyword">true</span>;
<a name="l00339"></a>00339 <span class="keywordflow">continue</span>;
<a name="l00340"></a>00340 }
<a name="l00341"></a>00341 }
<a name="l00342"></a>00342 }
<a name="l00343"></a>00343
<a name="l00344"></a>00344 assert( value < 16 );
<a name="l00345"></a>00345 assert( mBadChar == 0 );
<a name="l00346"></a>00346 assert( !mExpectLF );
<a name="l00347"></a>00347
<a name="l00348"></a>00348 <span class="keywordflow">if</span> ( mHaveAccu ) {
<a name="l00349"></a>00349 *dcursor++ = char( mAccu | value );
<a name="l00350"></a>00350 mAccu = 0;
<a name="l00351"></a>00351 mHaveAccu = <span class="keyword">false</span>;
<a name="l00352"></a>00352 mInsideHexChar = <span class="keyword">false</span>;
<a name="l00353"></a>00353 } <span class="keywordflow">else</span> {
<a name="l00354"></a>00354 mHaveAccu = <span class="keyword">true</span>;
<a name="l00355"></a>00355 mAccu = value << 4;
<a name="l00356"></a>00356 }
<a name="l00357"></a>00357 } <span class="keywordflow">else</span> { <span class="comment">// not mInsideHexChar</span>
<a name="l00358"></a>00358 <span class="keywordflow">if</span> ( ch <= '~' && ch >= <span class="charliteral">' '</span> || ch == <span class="charliteral">'\t'</span> ) {
<a name="l00359"></a>00359 <span class="keywordflow">if</span> ( ch == mEscapeChar ) {
<a name="l00360"></a>00360 mInsideHexChar = <span class="keyword">true</span>;
<a name="l00361"></a>00361 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( mQEncoding && ch == <span class="charliteral">'_'</span> ) {
<a name="l00362"></a>00362 *dcursor++ = char(0x20);
<a name="l00363"></a>00363 } <span class="keywordflow">else</span> {
<a name="l00364"></a>00364 *dcursor++ = char(ch);
<a name="l00365"></a>00365 }
<a name="l00366"></a>00366 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( ch == <span class="charliteral">'\n'</span> ) {
<a name="l00367"></a>00367 *dcursor++ = <span class="charliteral">'\n'</span>;
<a name="l00368"></a>00368 mExpectLF = <span class="keyword">false</span>;
<a name="l00369"></a>00369 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( ch == <span class="charliteral">'\r'</span> ) {
<a name="l00370"></a>00370 mExpectLF = <span class="keyword">true</span>;
<a name="l00371"></a>00371 } <span class="keywordflow">else</span> {
<a name="l00372"></a>00372 kdWarning() << <span class="stringliteral">"QuotedPrintableDecoder: "</span> << ch <<
<a name="l00373"></a>00373 <span class="stringliteral">" illegal character in input stream! Ignoring."</span> << endl;
<a name="l00374"></a>00374 }
<a name="l00375"></a>00375 }
<a name="l00376"></a>00376 }
<a name="l00377"></a>00377
<a name="l00378"></a>00378 <span class="keywordflow">return</span> (scursor == send);
<a name="l00379"></a>00379 }
<a name="l00380"></a>00380
<a name="l00381"></a>00381 <span class="keywordtype">bool</span> QuotedPrintableEncoder::fillInputBuffer( <span class="keyword">const</span> <span class="keywordtype">char</span>* & scursor,
<a name="l00382"></a>00382 <span class="keyword">const</span> <span class="keywordtype">char</span> * <span class="keyword">const</span> send ) {
<a name="l00383"></a>00383 <span class="comment">// Don't read more if there's still a tail of a line in the buffer:</span>
<a name="l00384"></a>00384 <span class="keywordflow">if</span> ( mSawLineEnd )
<a name="l00385"></a>00385 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00386"></a>00386
<a name="l00387"></a>00387 <span class="comment">// Read until the buffer is full or we have found CRLF or LF (which</span>
<a name="l00388"></a>00388 <span class="comment">// don't end up in the input buffer):</span>
<a name="l00389"></a>00389 <span class="keywordflow">for</span> ( ; ( mInputBufferWriteCursor + 1 ) % 16 != mInputBufferReadCursor
<a name="l00390"></a>00390 && scursor != send ; mInputBufferWriteCursor++ ) {
<a name="l00391"></a>00391 <span class="keywordtype">char</span> ch = *scursor++;
<a name="l00392"></a>00392 <span class="keywordflow">if</span> ( ch == <span class="charliteral">'\r'</span> ) {
<a name="l00393"></a>00393 mSawCR = <span class="keyword">true</span>;
<a name="l00394"></a>00394 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( ch == <span class="charliteral">'\n'</span> ) {
<a name="l00395"></a>00395 <span class="comment">// remove the CR from the input buffer (if any) and return that</span>
<a name="l00396"></a>00396 <span class="comment">// we found a line ending:</span>
<a name="l00397"></a>00397 <span class="keywordflow">if</span> ( mSawCR ) {
<a name="l00398"></a>00398 mSawCR = <span class="keyword">false</span>;
<a name="l00399"></a>00399 assert( mInputBufferWriteCursor != mInputBufferReadCursor );
<a name="l00400"></a>00400 mInputBufferWriteCursor--;
<a name="l00401"></a>00401 }
<a name="l00402"></a>00402 mSawLineEnd = <span class="keyword">true</span>;
<a name="l00403"></a>00403 <span class="keywordflow">return</span> <span class="keyword">true</span>; <span class="comment">// saw CRLF or LF</span>
<a name="l00404"></a>00404 } <span class="keywordflow">else</span> {
<a name="l00405"></a>00405 mSawCR = <span class="keyword">false</span>;
<a name="l00406"></a>00406 }
<a name="l00407"></a>00407 mInputBuffer[ mInputBufferWriteCursor ] = ch;
<a name="l00408"></a>00408 }
<a name="l00409"></a>00409 mSawLineEnd = <span class="keyword">false</span>;
<a name="l00410"></a>00410 <span class="keywordflow">return</span> <span class="keyword">false</span>; <span class="comment">// didn't see a line ending...</span>
<a name="l00411"></a>00411 }
<a name="l00412"></a>00412
<a name="l00413"></a>00413 <span class="keywordtype">bool</span> QuotedPrintableEncoder::processNextChar() {
<a name="l00414"></a>00414
<a name="l00415"></a>00415 <span class="comment">// If we process a buffer which doesn't end in a line break, we</span>
<a name="l00416"></a>00416 <span class="comment">// can't process all of it, since the next chars that will be read</span>
<a name="l00417"></a>00417 <span class="comment">// could be a line break. So we empty the buffer only until a fixed</span>
<a name="l00418"></a>00418 <span class="comment">// number of chars is left (except when mFinishing, which means that</span>
<a name="l00419"></a>00419 <span class="comment">// the data doesn't end in newline):</span>
<a name="l00420"></a>00420 <span class="keyword">const</span> <span class="keywordtype">int</span> minBufferFillWithoutLineEnd = 4;
<a name="l00421"></a>00421
<a name="l00422"></a>00422 assert( mOutputBufferCursor == 0 );
<a name="l00423"></a>00423
<a name="l00424"></a>00424 <span class="keywordtype">int</span> bufferFill = int(mInputBufferWriteCursor) - int(mInputBufferReadCursor) ;
<a name="l00425"></a>00425 <span class="keywordflow">if</span> ( bufferFill < 0 )
<a name="l00426"></a>00426 bufferFill += 16;
<a name="l00427"></a>00427
<a name="l00428"></a>00428 assert( bufferFill >=0 && bufferFill <= 15 );
<a name="l00429"></a>00429
<a name="l00430"></a>00430 <span class="keywordflow">if</span> ( !mFinishing && !mSawLineEnd &&
<a name="l00431"></a>00431 bufferFill < minBufferFillWithoutLineEnd )
<a name="l00432"></a>00432 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00433"></a>00433
<a name="l00434"></a>00434 <span class="comment">// buffer is empty, return false:</span>
<a name="l00435"></a>00435 <span class="keywordflow">if</span> ( mInputBufferReadCursor == mInputBufferWriteCursor )
<a name="l00436"></a>00436 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00437"></a>00437
<a name="l00438"></a>00438 <span class="comment">// Real processing goes here:</span>
<a name="l00439"></a>00439 mAccu = mInputBuffer[ mInputBufferReadCursor++ ];
<a name="l00440"></a>00440 <span class="keywordflow">if</span> ( needsEncoding( mAccu ) ) <span class="comment">// always needs encoding or</span>
<a name="l00441"></a>00441 mAccuNeedsEncoding = Definitely;
<a name="l00442"></a>00442 <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( ( mSawLineEnd || mFinishing ) <span class="comment">// needs encoding at end of line</span>
<a name="l00443"></a>00443 && bufferFill == 1 <span class="comment">// or end of buffer</span>
<a name="l00444"></a>00444 && needsEncodingAtEOL( mAccu ) )
<a name="l00445"></a>00445 mAccuNeedsEncoding = Definitely;
<a name="l00446"></a>00446 <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( needsEncodingAtBOL( mAccu ) )
<a name="l00447"></a>00447 mAccuNeedsEncoding = AtBOL;
<a name="l00448"></a>00448 <span class="keywordflow">else</span>
<a name="l00449"></a>00449 <span class="comment">// never needs encoding</span>
<a name="l00450"></a>00450 mAccuNeedsEncoding = Never;
<a name="l00451"></a>00451
<a name="l00452"></a>00452 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00453"></a>00453 }
<a name="l00454"></a>00454
<a name="l00455"></a>00455 <span class="comment">// Outputs processed (verbatim or hex-encoded) chars and inserts soft</span>
<a name="l00456"></a>00456 <span class="comment">// line breaks as necessary. Depends on processNextChar's directions</span>
<a name="l00457"></a>00457 <span class="comment">// on whether or not to encode the current char, and whether or not</span>
<a name="l00458"></a>00458 <span class="comment">// the current char is the last one in it's input line:</span>
<a name="l00459"></a>00459 <span class="keywordtype">void</span> QuotedPrintableEncoder::createOutputBuffer( <span class="keywordtype">char</span>* & dcursor,
<a name="l00460"></a>00460 <span class="keyword">const</span> <span class="keywordtype">char</span> * <span class="keyword">const</span> dend )
<a name="l00461"></a>00461 {
<a name="l00462"></a>00462 <span class="keyword">const</span> <span class="keywordtype">int</span> maxLineLength = 76; <span class="comment">// rfc 2045</span>
<a name="l00463"></a>00463
<a name="l00464"></a>00464 assert( mOutputBufferCursor == 0 );
<a name="l00465"></a>00465
<a name="l00466"></a>00466 <span class="keywordtype">bool</span> lastOneOnThisLine = mSawLineEnd
<a name="l00467"></a>00467 && mInputBufferReadCursor == mInputBufferWriteCursor;
<a name="l00468"></a>00468
<a name="l00469"></a>00469 <span class="keywordtype">int</span> neededSpace = 1;
<a name="l00470"></a>00470 <span class="keywordflow">if</span> ( mAccuNeedsEncoding == Definitely)
<a name="l00471"></a>00471 neededSpace = 3;
<a name="l00472"></a>00472
<a name="l00473"></a>00473 <span class="comment">// reserve space for the soft hyphen (=)</span>
<a name="l00474"></a>00474 <span class="keywordflow">if</span> ( !lastOneOnThisLine )
<a name="l00475"></a>00475 neededSpace++;
<a name="l00476"></a>00476
<a name="l00477"></a>00477 <span class="keywordflow">if</span> ( mCurrentLineLength > maxLineLength - neededSpace ) {
<a name="l00478"></a>00478 <span class="comment">// current line too short, insert soft line break:</span>
<a name="l00479"></a>00479 write( <span class="charliteral">'='</span>, dcursor, dend );
<a name="l00480"></a>00480 writeCRLF( dcursor, dend );
<a name="l00481"></a>00481 mCurrentLineLength = 0;
<a name="l00482"></a>00482 }
<a name="l00483"></a>00483
<a name="l00484"></a>00484 <span class="keywordflow">if</span> ( Never == mAccuNeedsEncoding ||
<a name="l00485"></a>00485 AtBOL == mAccuNeedsEncoding && mCurrentLineLength != 0 ) {
<a name="l00486"></a>00486 write( mAccu, dcursor, dend );
<a name="l00487"></a>00487 mCurrentLineLength++;
<a name="l00488"></a>00488 } <span class="keywordflow">else</span> {
<a name="l00489"></a>00489 write( <span class="charliteral">'='</span>, dcursor, dend );
<a name="l00490"></a>00490 write( binToHex( highNibble( mAccu ) ), dcursor, dend );
<a name="l00491"></a>00491 write( binToHex( lowNibble( mAccu ) ), dcursor, dend );
<a name="l00492"></a>00492 mCurrentLineLength += 3;
<a name="l00493"></a>00493 }
<a name="l00494"></a>00494 }
<a name="l00495"></a>00495
<a name="l00496"></a>00496
<a name="l00497"></a>00497 <span class="keywordtype">bool</span> <a class="code" href="classKMime_1_1Encoder.html#aa2eefa0dbf49272c1ec09b8a4b99ae9" title="Encode a chunk of data, maintaining state information between calls.">QuotedPrintableEncoder::encode</a>( <span class="keyword">const</span> <span class="keywordtype">char</span>* & scursor, <span class="keyword">const</span> <span class="keywordtype">char</span> * <span class="keyword">const</span> send,
<a name="l00498"></a>00498 <span class="keywordtype">char</span>* & dcursor, <span class="keyword">const</span> <span class="keywordtype">char</span> * <span class="keyword">const</span> dend )
<a name="l00499"></a>00499 {
<a name="l00500"></a>00500 <span class="comment">// support probing by the caller:</span>
<a name="l00501"></a>00501 <span class="keywordflow">if</span> ( mFinishing ) <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00502"></a>00502
<a name="l00503"></a>00503 <span class="keywordflow">while</span> ( scursor != send && dcursor != dend ) {
<a name="l00504"></a>00504 <span class="keywordflow">if</span> ( mOutputBufferCursor && !flushOutputBuffer( dcursor, dend ) )
<a name="l00505"></a>00505 <span class="keywordflow">return</span> (scursor == send);
<a name="l00506"></a>00506
<a name="l00507"></a>00507 assert( mOutputBufferCursor == 0 );
<a name="l00508"></a>00508
<a name="l00509"></a>00509 <span class="comment">// fill input buffer until eol has been reached or until the</span>
<a name="l00510"></a>00510 <span class="comment">// buffer is full, whatever comes first:</span>
<a name="l00511"></a>00511 fillInputBuffer( scursor, send );
<a name="l00512"></a>00512
<a name="l00513"></a>00513 <span class="keywordflow">if</span> ( processNextChar() )
<a name="l00514"></a>00514 <span class="comment">// there was one...</span>
<a name="l00515"></a>00515 createOutputBuffer( dcursor, dend );
<a name="l00516"></a>00516 <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( mSawLineEnd &&
<a name="l00517"></a>00517 mInputBufferWriteCursor == mInputBufferReadCursor ) {
<a name="l00518"></a>00518 <span class="comment">// load a hard line break into output buffer:</span>
<a name="l00519"></a>00519 writeCRLF( dcursor, dend );
<a name="l00520"></a>00520 <span class="comment">// signal fillInputBuffer() we are ready for the next line:</span>
<a name="l00521"></a>00521 mSawLineEnd = <span class="keyword">false</span>;
<a name="l00522"></a>00522 mCurrentLineLength = 0;
<a name="l00523"></a>00523 } <span class="keywordflow">else</span>
<a name="l00524"></a>00524 <span class="comment">// we are supposedly finished with this input block:</span>
<a name="l00525"></a>00525 <span class="keywordflow">break</span>;
<a name="l00526"></a>00526 }
<a name="l00527"></a>00527
<a name="l00528"></a>00528 <span class="comment">// make sure we write as much as possible and don't stop _writing_</span>
<a name="l00529"></a>00529 <span class="comment">// just because we have no more _input_:</span>
<a name="l00530"></a>00530 <span class="keywordflow">if</span> ( mOutputBufferCursor ) flushOutputBuffer( dcursor, dend );
<a name="l00531"></a>00531
<a name="l00532"></a>00532 <span class="keywordflow">return</span> (scursor == send);
<a name="l00533"></a>00533
<a name="l00534"></a>00534 } <span class="comment">// encode</span>
<a name="l00535"></a>00535
<a name="l00536"></a>00536 <span class="keywordtype">bool</span> <a class="code" href="classKMime_1_1Encoder.html#044de80fc6464e793e8951d282b9c9c0" title="Call this method to finalize the output stream.">QuotedPrintableEncoder::finish</a>( <span class="keywordtype">char</span>* & dcursor,
<a name="l00537"></a>00537 <span class="keyword">const</span> <span class="keywordtype">char</span> * <span class="keyword">const</span> dend ) {
<a name="l00538"></a>00538 mFinishing = <span class="keyword">true</span>;
<a name="l00539"></a>00539
<a name="l00540"></a>00540 <span class="keywordflow">if</span> ( mFinished )
<a name="l00541"></a>00541 <span class="keywordflow">return</span> flushOutputBuffer( dcursor, dend );
<a name="l00542"></a>00542
<a name="l00543"></a>00543 <span class="keywordflow">while</span> ( dcursor != dend ) {
<a name="l00544"></a>00544 <span class="keywordflow">if</span> ( mOutputBufferCursor && !flushOutputBuffer( dcursor, dend ) )
<a name="l00545"></a>00545 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00546"></a>00546
<a name="l00547"></a>00547 assert( mOutputBufferCursor == 0 );
<a name="l00548"></a>00548
<a name="l00549"></a>00549 <span class="keywordflow">if</span> ( processNextChar() )
<a name="l00550"></a>00550 <span class="comment">// there was one...</span>
<a name="l00551"></a>00551 createOutputBuffer( dcursor, dend );
<a name="l00552"></a>00552 <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( mSawLineEnd &&
<a name="l00553"></a>00553 mInputBufferWriteCursor == mInputBufferReadCursor ) {
<a name="l00554"></a>00554 <span class="comment">// load a hard line break into output buffer:</span>
<a name="l00555"></a>00555 writeCRLF( dcursor, dend );
<a name="l00556"></a>00556 mSawLineEnd = <span class="keyword">false</span>;
<a name="l00557"></a>00557 mCurrentLineLength = 0;
<a name="l00558"></a>00558 } <span class="keywordflow">else</span> {
<a name="l00559"></a>00559 mFinished = <span class="keyword">true</span>;
<a name="l00560"></a>00560 <span class="keywordflow">return</span> flushOutputBuffer( dcursor, dend );
<a name="l00561"></a>00561 }
<a name="l00562"></a>00562 }
<a name="l00563"></a>00563
<a name="l00564"></a>00564 <span class="keywordflow">return</span> mFinished && !mOutputBufferCursor;
<a name="l00565"></a>00565
<a name="l00566"></a>00566 } <span class="comment">// finish</span>
<a name="l00567"></a>00567
<a name="l00568"></a>00568
<a name="l00569"></a>00569 <span class="keywordtype">bool</span> <a class="code" href="classKMime_1_1Encoder.html#aa2eefa0dbf49272c1ec09b8a4b99ae9" title="Encode a chunk of data, maintaining state information between calls.">Rfc2047QEncodingEncoder::encode</a>( <span class="keyword">const</span> <span class="keywordtype">char</span>* & scursor, <span class="keyword">const</span> <span class="keywordtype">char</span> * <span class="keyword">const</span> send,
<a name="l00570"></a>00570 <span class="keywordtype">char</span>* & dcursor, <span class="keyword">const</span> <span class="keywordtype">char</span> * <span class="keyword">const</span> dend )
<a name="l00571"></a>00571 {
<a name="l00572"></a>00572 <span class="keywordflow">if</span> ( mInsideFinishing ) <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00573"></a>00573
<a name="l00574"></a>00574 <span class="keywordflow">while</span> ( scursor != send && dcursor != dend ) {
<a name="l00575"></a>00575 uchar value;
<a name="l00576"></a>00576 <span class="keywordflow">switch</span> ( mStepNo ) {
<a name="l00577"></a>00577 <span class="keywordflow">case</span> 0:
<a name="l00578"></a>00578 <span class="comment">// read the next char and decide if and how do encode:</span>
<a name="l00579"></a>00579 mAccu = *scursor++;
<a name="l00580"></a>00580 <span class="keywordflow">if</span> ( !needsEncoding( mAccu ) ) {
<a name="l00581"></a>00581 *dcursor++ = char(mAccu);
<a name="l00582"></a>00582 } <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( mEscapeChar == <span class="charliteral">'='</span> && mAccu == 0x20 ) {
<a name="l00583"></a>00583 <span class="comment">// shortcut encoding for 0x20 (latin-1/us-ascii SPACE)</span>
<a name="l00584"></a>00584 <span class="comment">// (not for rfc2231 encoding)</span>
<a name="l00585"></a>00585 *dcursor++ = <span class="charliteral">'_'</span>;
<a name="l00586"></a>00586 } <span class="keywordflow">else</span> {
<a name="l00587"></a>00587 <span class="comment">// needs =XY encoding - write escape char:</span>
<a name="l00588"></a>00588 *dcursor++ = mEscapeChar;
<a name="l00589"></a>00589 mStepNo = 1;
<a name="l00590"></a>00590 }
<a name="l00591"></a>00591 <span class="keywordflow">continue</span>;
<a name="l00592"></a>00592 <span class="keywordflow">case</span> 1:
<a name="l00593"></a>00593 <span class="comment">// extract hi-nibble:</span>
<a name="l00594"></a>00594 value = highNibble(mAccu);
<a name="l00595"></a>00595 mStepNo = 2;
<a name="l00596"></a>00596 <span class="keywordflow">break</span>;
<a name="l00597"></a>00597 <span class="keywordflow">case</span> 2:
<a name="l00598"></a>00598 <span class="comment">// extract lo-nibble:</span>
<a name="l00599"></a>00599 value = lowNibble(mAccu);
<a name="l00600"></a>00600 mStepNo = 0;
<a name="l00601"></a>00601 <span class="keywordflow">break</span>;
<a name="l00602"></a>00602 <span class="keywordflow">default</span>: assert( 0 );
<a name="l00603"></a>00603 }
<a name="l00604"></a>00604
<a name="l00605"></a>00605 <span class="comment">// and write:</span>
<a name="l00606"></a>00606 *dcursor++ = binToHex( value );
<a name="l00607"></a>00607 }
<a name="l00608"></a>00608
<a name="l00609"></a>00609 <span class="keywordflow">return</span> (scursor == send);
<a name="l00610"></a>00610 } <span class="comment">// encode</span>
<a name="l00611"></a>00611
<a name="l00612"></a>00612 <span class="preprocessor">#include <qstring.h></span>
<a name="l00613"></a>00613
<a name="l00614"></a>00614 <span class="keywordtype">bool</span> <a class="code" href="classKMime_1_1Encoder.html#044de80fc6464e793e8951d282b9c9c0" title="Call this method to finalize the output stream.">Rfc2047QEncodingEncoder::finish</a>( <span class="keywordtype">char</span>* & dcursor, <span class="keyword">const</span> <span class="keywordtype">char</span> * <span class="keyword">const</span> dend ) {
<a name="l00615"></a>00615 mInsideFinishing = <span class="keyword">true</span>;
<a name="l00616"></a>00616
<a name="l00617"></a>00617 <span class="comment">// write the last bits of mAccu, if any:</span>
<a name="l00618"></a>00618 <span class="keywordflow">while</span> ( mStepNo != 0 && dcursor != dend ) {
<a name="l00619"></a>00619 uchar value;
<a name="l00620"></a>00620 <span class="keywordflow">switch</span> ( mStepNo ) {
<a name="l00621"></a>00621 <span class="keywordflow">case</span> 1:
<a name="l00622"></a>00622 <span class="comment">// extract hi-nibble:</span>
<a name="l00623"></a>00623 value = highNibble(mAccu);
<a name="l00624"></a>00624 mStepNo = 2;
<a name="l00625"></a>00625 <span class="keywordflow">break</span>;
<a name="l00626"></a>00626 <span class="keywordflow">case</span> 2:
<a name="l00627"></a>00627 <span class="comment">// extract lo-nibble:</span>
<a name="l00628"></a>00628 value = lowNibble(mAccu);
<a name="l00629"></a>00629 mStepNo = 0;
<a name="l00630"></a>00630 <span class="keywordflow">break</span>;
<a name="l00631"></a>00631 <span class="keywordflow">default</span>: assert( 0 );
<a name="l00632"></a>00632 }
<a name="l00633"></a>00633
<a name="l00634"></a>00634 <span class="comment">// and write:</span>
<a name="l00635"></a>00635 *dcursor++ = binToHex( value );
<a name="l00636"></a>00636 }
<a name="l00637"></a>00637
<a name="l00638"></a>00638 <span class="keywordflow">return</span> mStepNo == 0;
<a name="l00639"></a>00639 }
<a name="l00640"></a>00640
<a name="l00641"></a>00641
<a name="l00642"></a>00642
<a name="l00643"></a>00643
<a name="l00644"></a>00644 } <span class="comment">// namespace KMime</span>
</pre></div></div>
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