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<h2><a name="content"></a>KMIME Library</h2>
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<div class="title">kmime_codec_uuencode.cpp</div> </div>
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<a href="kmime__codec__uuencode_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/* -*- c++ -*-</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> kmime_codec_uuencode.cpp</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"></span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> KMime, the KDE Internet mail/usenet news message library.</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> Copyright (c) 2002 Marc Mutz <mutz@kde.org></span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"></span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> This library is free software; you can redistribute it and/or</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> modify it under the terms of the GNU Library General Public</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> License as published by the Free Software Foundation; either</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> version 2 of the License, or (at your option) any later version.</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"></span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> This library is distributed in the hope that it will be useful,</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> Library General Public License for more details.</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"></span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> You should have received a copy of the GNU Library General Public License</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> along with this library; see the file COPYING.LIB. If not, write to</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> Boston, MA 02110-1301, USA.</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment">*/</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#include "<a class="code" href="kmime__codec__uuencode_8h.html" title="This file is part of the API for handling MIME data and defines a uuencode Codec class.">kmime_codec_uuencode.h</a>"</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor">#include <kdebug.h></span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor">#include <cassert></span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> </div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="keyword">using namespace </span>KMime;</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> </div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="keyword">namespace </span>KMime {</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> </div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="keyword">class </span>UUDecoder : <span class="keyword">public</span> <a class="code" href="classKMime_1_1Decoder.html" title="Stateful CTE decoder class.">Decoder</a></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> {</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  uint mStepNo;</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  uchar mAnnouncedOctetCount; <span class="comment">// (on current line)</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  uchar mCurrentOctetCount; <span class="comment">// (on current line)</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  uchar mOutbits;</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordtype">bool</span> mLastWasCRLF : 1;</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keywordtype">bool</span> mSawBegin : 1; <span class="comment">// whether we already saw ^begin...</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  uint mIntoBeginLine : 3; <span class="comment">// count #chars we compared against "begin" 0..5</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keywordtype">bool</span> mSawEnd : 1; <span class="comment">// whether we already saw ^end...</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  uint mIntoEndLine : 2; <span class="comment">// count #chars we compared against "end" 0..3</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> </div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordtype">void</span> searchForBegin( <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 );</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> </div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keyword">protected</span>:</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keyword">friend</span> <span class="keyword">class </span><a class="code" href="classKMime_1_1UUCodec.html" title="A class representing the UUEncode codec.">UUCodec</a>;</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  UUDecoder( <span class="keywordtype">bool</span> withCRLF=<span class="keyword">false</span> )</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  : <a class="code" href="classKMime_1_1Decoder.html" title="Stateful CTE decoder class.">Decoder</a>( withCRLF ), mStepNo( 0 ),</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  mAnnouncedOctetCount( 0 ), mCurrentOctetCount( 0 ),</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  mOutbits( 0 ), mLastWasCRLF( true ),</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  mSawBegin( false ), mIntoBeginLine( 0 ),</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  mSawEnd( false ), mIntoEndLine( 0 ) {}</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keyword">virtual</span> ~UUDecoder() {}</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> </div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <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,</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordtype">char</span>* &dcursor, <span class="keyword">const</span> <span class="keywordtype">char</span> * <span class="keyword">const</span> dend );</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="comment">// ### really needs no finishing???</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <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 )</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  { Q_UNUSED( dcursor ); Q_UNUSED( dend ); <span class="keywordflow">return</span> <span class="keyword">true</span>; }</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> };</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> </div>
<div class="line"><a name="l00076"></a><span class="lineno"><a class="code" href="classKMime_1_1UUCodec.html#a2572711e69abe12df5f58b1ae6a63a40"> 76</a></span> <a class="code" href="classKMime_1_1Encoder.html" title="Stateful encoder class.">Encoder</a> * <a class="code" href="classKMime_1_1UUCodec.html#a2572711e69abe12df5f58b1ae6a63a40">UUCodec::makeEncoder</a>( <span class="keywordtype">bool</span> )<span class="keyword"> const</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="keyword"></span>{</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordflow">return</span> 0; <span class="comment">// encoding not supported</span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> }</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> </div>
<div class="line"><a name="l00081"></a><span class="lineno"><a class="code" href="classKMime_1_1UUCodec.html#afdb4f080ee79edb691f8d0b4f4433304"> 81</a></span> <a class="code" href="classKMime_1_1Decoder.html" title="Stateful CTE decoder class.">Decoder</a> * <a class="code" href="classKMime_1_1UUCodec.html#afdb4f080ee79edb691f8d0b4f4433304">UUCodec::makeDecoder</a>( <span class="keywordtype">bool</span> withCRLF )<span class="keyword"> const</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="keyword"></span>{</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordflow">return</span> <span class="keyword">new</span> UUDecoder( withCRLF );</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> }</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> </div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="comment">/********************************************************/</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="comment">/********************************************************/</span></div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="comment">/********************************************************/</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> </div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="keywordtype">void</span> UUDecoder::searchForBegin( <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 )</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> {</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span> begin[] = <span class="stringliteral">"begin\n"</span>;</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keyword">static</span> <span class="keyword">const</span> uint beginLength = 5; <span class="comment">// sic!</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> </div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  assert( !mSawBegin || mIntoBeginLine > 0 );</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> </div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordflow">while</span> ( scursor != send ) {</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  uchar ch = *scursor++;</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordflow">if</span> ( ch == begin[mIntoBeginLine] ) {</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keywordflow">if</span> ( mIntoBeginLine < beginLength ) {</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="comment">// found another char</span></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  ++mIntoBeginLine;</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordflow">if</span> ( mIntoBeginLine == beginLength ) {</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  mSawBegin = <span class="keyword">true</span>; <span class="comment">// "begin" complete, now search the next \n...</span></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  }</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  } <span class="keywordflow">else</span> { <span class="comment">// mIntoBeginLine == beginLength</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="comment">// found '\n': begin line complete</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  mLastWasCRLF = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  mIntoBeginLine = 0;</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  }</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( mSawBegin ) {</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="comment">// OK, skip stuff until the next \n</span></div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  kWarning() << <span class="stringliteral">"UUDecoder: garbage before \"begin\", resetting parser"</span>;</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  mIntoBeginLine = 0;</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  }</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  }</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> </div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> }</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> </div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="comment">// uuencoding just shifts all 6-bit octets by 32 (SP/' '), except NUL,</span></div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="comment">// which gets mapped to 0x60</span></div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="keyword">static</span> <span class="keyword">inline</span> uchar uuDecode( uchar c )</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> {</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordflow">return</span> ( c - <span class="charliteral">' '</span> ) <span class="comment">// undo shift and</span></div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  & 0x3F; <span class="comment">// map 0x40 (0x60-' ') to 0...</span></div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> }</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> </div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="keywordtype">bool</span> UUDecoder::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,</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="keywordtype">char</span>* &dcursor, <span class="keyword">const</span> <span class="keywordtype">char</span> * <span class="keyword">const</span> dend )</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> {</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="comment">// First, check whether we still need to find the "begin" line:</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keywordflow">if</span> ( !mSawBegin || mIntoBeginLine != 0 ) {</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  searchForBegin( scursor, send );</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( mSawEnd ) {</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="comment">// or if we are past the end line:</span></div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  scursor = send; <span class="comment">// do nothing anymore...</span></div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  }</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> </div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keywordflow">while</span> ( dcursor != dend && scursor != send ) {</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  uchar ch = *scursor++;</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  uchar value;</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> </div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="comment">// Check whether we need to look for the "end" line:</span></div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keywordflow">if</span> ( mIntoEndLine > 0 ) {</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span> end[] = <span class="stringliteral">"end"</span>;</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="keyword">static</span> <span class="keyword">const</span> uint endLength = 3;</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span> </div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keywordflow">if</span> ( ch == end[mIntoEndLine] ) {</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  ++mIntoEndLine;</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="keywordflow">if</span> ( mIntoEndLine == endLength ) {</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  mSawEnd = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  scursor = send; <span class="comment">// shortcut to the end</span></div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  }</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  kWarning() << <span class="stringliteral">"UUDecoder: invalid line octet count looks like \"end\" (mIntoEndLine ="</span></div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  << mIntoEndLine << <span class="stringliteral">")!"</span>;</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  mIntoEndLine = 0;</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="comment">// fall through...</span></div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  }</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  }</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> </div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="comment">// Normal parsing:</span></div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> </div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="comment">// The first char of a line is an encoding of the length of the</span></div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="comment">// current line. We simply ignore it:</span></div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keywordflow">if</span> ( mLastWasCRLF ) {</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="comment">// reset char-per-line counter:</span></div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  mLastWasCRLF = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  mCurrentOctetCount = 0;</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span> </div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="comment">// try to decode the chars-on-this-line announcement:</span></div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="keywordflow">if</span> ( ch == <span class="charliteral">'e'</span> ) { <span class="comment">// maybe the beginning of the "end"? ;-)</span></div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  mIntoEndLine = 1;</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( ch > 0x60 ) {</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="comment">// ### invalid line length char: what shall we do??</span></div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( ch > <span class="charliteral">' '</span> ) {</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  mAnnouncedOctetCount = uuDecode( ch );</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( ch == <span class="charliteral">'\n'</span> ) {</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  mLastWasCRLF = <span class="keyword">true</span>; <span class="comment">// oops, empty line</span></div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  }</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span> </div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  }</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span> </div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="comment">// try converting ch to a 6-bit value:</span></div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="keywordflow">if</span> ( ch > 0x60 ) {</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="keywordflow">continue</span>; <span class="comment">// invalid char</span></div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( ch > <span class="charliteral">' '</span> ) {</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  value = uuDecode( ch );</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( ch == <span class="charliteral">'\n'</span> ) { <span class="comment">// line end</span></div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  mLastWasCRLF = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  }</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> </div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="comment">// add the new bits to the output stream and flush full octets:</span></div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="keywordflow">switch</span> ( mStepNo ) {</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="keywordflow">case</span> 0:</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  mOutbits = value << 2;</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="keywordflow">case</span> 1:</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <span class="keywordflow">if</span> ( mCurrentOctetCount < mAnnouncedOctetCount ) {</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  *dcursor++ = (char)( mOutbits | value >> 4 );</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  }</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  ++mCurrentOctetCount;</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  mOutbits = value << 4;</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  <span class="keywordflow">case</span> 2:</div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="keywordflow">if</span> ( mCurrentOctetCount < mAnnouncedOctetCount ) {</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  *dcursor++ = (char)( mOutbits | value >> 2 );</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  }</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  ++mCurrentOctetCount;</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  mOutbits = value << 6;</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <span class="keywordflow">case</span> 3:</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <span class="keywordflow">if</span> ( mCurrentOctetCount < mAnnouncedOctetCount ) {</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  *dcursor++ = (char)( mOutbits | value );</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  }</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  ++mCurrentOctetCount;</div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  mOutbits = 0;</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  assert( 0 );</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  }</div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  mStepNo = ( mStepNo + 1 ) % 4;</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span> </div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="comment">// check whether we ran over the announced octet count for this line:</span></div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  kWarning( mCurrentOctetCount == mAnnouncedOctetCount + 1 )</div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  << <span class="stringliteral">"UUDecoder: mismatch between announced ("</span></div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  << mAnnouncedOctetCount << <span class="stringliteral">") and actual line octet count!"</span>;</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span> </div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  }</div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span> </div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  <span class="comment">// return false when caller should call us again:</span></div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  <span class="keywordflow">return</span> scursor == send;</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span> } <span class="comment">// UUDecoder::decode()</span></div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span> </div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span> } <span class="comment">// namespace KMime</span></div>
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