chmxx_8h-source.html

It is a chm file viewer lib with source code

00161   {
00162       size_t result = 0;
00163       <span class="keywordtype">int</span> shift = 0;
00164 
00165       <span class="keywordflow">while</span> (1) {
00166           <span class="keywordtype">int</span> n = get();
00167           result |= (n &amp; 0x7f) &lt;&lt; shift;
00168           shift += 7;
00169           <span class="keywordflow">if</span> ( !(n &amp; 0x80) ) <span class="keywordflow">break</span>;
00170       };
00171 
00172       <span class="keywordflow">return</span> result;
00173   }
00174 
<a name="l00176"></a><a class="code" href="classchm_1_1chmistream.html#a4">00176</a>   <span class="keyword">inline</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <a class="code" href="classchm_1_1chmistream.html#a4">get_dword</a> ()
00177   {
00178 <span class="preprocessor">#if __BYTE_ORDER == __LITTLE_ENDIAN // convenience shortcut</span>
00179 <span class="preprocessor"></span>    <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> res = 0;  <span class="comment">// long guatanteed to be 4 bytes</span>
00180     read ((<span class="keywordtype">char</span> *)&amp;res, 4);
00181     <span class="keywordflow">return</span> res;
00182 <span class="preprocessor">#else</span>
00183 <span class="preprocessor"></span>    <span class="keywordtype">char</span> buf[4];
00184     read (buf, 4);
00185     size_t res = buf[0];
00186     res |= buf[1] &lt;&lt; 8;
00187     res |= buf[2] &lt;&lt; 16;
00188     res |= buf[3] &lt;&lt; 24;
00189     <span class="keywordflow">return</span> res;
00190 <span class="preprocessor">#endif</span>
00191 <span class="preprocessor"></span>  }
00192 
<a name="l00195"></a><a class="code" href="classchm_1_1chmistream.html#a5">00195</a>   <span class="keyword">inline</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="classchm_1_1chmistream.html#a5">get_word</a> ()
00196   {
00197 <span class="preprocessor">#if __BYTE_ORDER == __LITTLE_ENDIAN // convenience shortcut</span>
00198 <span class="preprocessor"></span>    <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> res = 0;   <span class="comment">// int guaranteed to be 2 bytes</span>
00199     read ((<span class="keywordtype">char</span> *)&amp;res, 2);
00200     <span class="keywordflow">return</span> res;
00201 <span class="preprocessor">#else</span>
00202 <span class="preprocessor"></span>    <span class="keywordtype">char</span> buf[2];
00203     read (buf, 2);
00204     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> res = buf[0];
00205     res |= buf[1] &lt;&lt; 8;
00206     <span class="keywordflow">return</span> res;
00207 <span class="preprocessor">#endif</span>
00208 <span class="preprocessor"></span>  }
00209 
<a name="l00213"></a><a class="code" href="classchm_1_1chmistream.html#a6">00213</a>   <span class="keyword">inline</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> <a class="code" href="classchm_1_1chmistream.html#a6">get_sr</a> (<span class="keywordtype">int</span> s, <span class="keywordtype">int</span> r, <span class="keywordtype">int</span>&amp; pos)
00214   {
00215     <span class="keywordtype">int</span> b = peek();
00216     <span class="keywordtype">int</span> p = 0;
00217     <span class="keywordflow">while</span> ( (1 &lt;&lt; pos) &amp; b ) {
00218         p++;
00219         pos++;
00220         <span class="keywordflow">if</span> ( pos == 8 ) {
00221             get();
00222             b = peek ();
00223             pos = 0;
00224         }
00225     }
00226 
00227     pos++;    <span class="comment">// skip the 0 of p</span>
00228     <span class="keywordflow">if</span> ( pos == 8 ) {
00229         get ();
00230         b = peek ();
00231         pos = 0;
00232     }
00233 
00234     <span class="keywordflow">if</span> ( p &gt; 1 ) r += p - 1; <span class="comment">// r now has number of bits for q</span>
00235 
00236     <span class="keywordtype">unsigned</span> <span class="keywordtype">long</span> res = 0;
00237 
00238     <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> i = 0; i &lt; r; i++ ) {
00239         res |= ((1 &lt;&lt; pos) &amp; b) ? (1 &lt;&lt; i) : 0;
00240         pos++;
00241         <span class="keywordflow">if</span> ( pos == 8 ) {
00242             get ();
00243             b = peek ();
00244             pos = 0;
00245         }
00246     }
00247 
00248     res |= 1 &lt;&lt; r;
00249 
00250     <span class="keywordflow">return</span> res;
00251   }
00252 
<a name="l00253"></a><a class="code" href="classchm_1_1chmistream.html#a7">00253</a>   <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code" href="classchm_1_1chmistream.html#a7">get_sr_finish</a> (<span class="keywordtype">int</span> &amp;pos)
00254   {
00255     <span class="keywordflow">if</span> ( pos ) {
00256         get();
00257         pos = 0;
00258     }
00259   }
00260 
00261 <span class="keyword">private</span>:
00262   std::streambuf *buf;
00263   <span class="keywordtype">bool</span> release;
00264 };
00265 
00266 }
00267 
00268 <span class="preprocessor">#endif // __chm_h__</span>
00269 <span class="preprocessor"></span>
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