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+<title>TB9.2 Example Applications: examples/PIPS/antiword/src/depot.c Source File</title>
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+<h1>examples/PIPS/antiword/src/depot.c</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
+<a name="l00002"></a>00002 <span class="comment"> * depot.c</span>
+<a name="l00003"></a>00003 <span class="comment"> * Copyright (C) 1998-2002 A.J. van Os; Released under GPL</span>
+<a name="l00004"></a>00004 <span class="comment"> *</span>
+<a name="l00005"></a>00005 <span class="comment"> * Description:</span>
+<a name="l00006"></a>00006 <span class="comment"> * Functions to compute the depot offset</span>
+<a name="l00007"></a>00007 <span class="comment"> */</span>
+<a name="l00008"></a>00008
+<a name="l00009"></a>00009 <span class="preprocessor">#include "antiword.h"</span>
+<a name="l00010"></a>00010
+<a name="l00011"></a>00011 <span class="preprocessor">#define SIZE_RATIO (BIG_BLOCK_SIZE/SMALL_BLOCK_SIZE)</span>
+<a name="l00012"></a>00012 <span class="preprocessor"></span>
+<a name="l00013"></a>00013 <span class="keyword">static</span> ULONG *aulSmallBlockList = NULL;
+<a name="l00014"></a>00014 <span class="keyword">static</span> <span class="keywordtype">size_t</span> tSmallBlockListLen = 0;
+<a name="l00015"></a>00015
+<a name="l00016"></a>00016
+<a name="l00017"></a>00017 <span class="comment">/*</span>
+<a name="l00018"></a>00018 <span class="comment"> * vDestroySmallBlockList - destroy the small block list</span>
+<a name="l00019"></a>00019 <span class="comment"> */</span>
+<a name="l00020"></a>00020 <span class="keywordtype">void</span>
+<a name="l00021"></a>00021 vDestroySmallBlockList(<span class="keywordtype">void</span>)
+<a name="l00022"></a>00022 {
+<a name="l00023"></a>00023 DBG_MSG(<span class="stringliteral">"vDestroySmallBlockList"</span>);
+<a name="l00024"></a>00024
+<a name="l00025"></a>00025 aulSmallBlockList = xfree(aulSmallBlockList);
+<a name="l00026"></a>00026 tSmallBlockListLen = 0;
+<a name="l00027"></a>00027 } <span class="comment">/* end of vDestroySmalBlockList */</span>
+<a name="l00028"></a>00028
+<a name="l00029"></a>00029 <span class="comment">/*</span>
+<a name="l00030"></a>00030 <span class="comment"> * vCreateSmallBlockList - create the small block list</span>
+<a name="l00031"></a>00031 <span class="comment"> *</span>
+<a name="l00032"></a>00032 <span class="comment"> * returns: TRUE when successful, otherwise FALSE</span>
+<a name="l00033"></a>00033 <span class="comment"> */</span>
+<a name="l00034"></a>00034 BOOL
+<a name="l00035"></a>00035 bCreateSmallBlockList(ULONG ulStartblock, <span class="keyword">const</span> ULONG *aulBBD, <span class="keywordtype">size_t</span> tBBDLen)
+<a name="l00036"></a>00036 {
+<a name="l00037"></a>00037 ULONG ulTmp;
+<a name="l00038"></a>00038 <span class="keywordtype">size_t</span> tSize;
+<a name="l00039"></a>00039 <span class="keywordtype">int</span> iIndex;
+<a name="l00040"></a>00040
+<a name="l00041"></a>00041 fail(aulSmallBlockList != NULL);
+<a name="l00042"></a>00042 fail(tSmallBlockListLen != 0);
+<a name="l00043"></a>00043 fail(ulStartblock > MAX_BLOCKNUMBER && ulStartblock != END_OF_CHAIN);
+<a name="l00044"></a>00044 fail(aulBBD == NULL);
+<a name="l00045"></a>00045 fail(tBBDLen == 0);
+<a name="l00046"></a>00046
+<a name="l00047"></a>00047 <span class="comment">/* Find the length of the small block list */</span>
+<a name="l00048"></a>00048 <span class="keywordflow">for</span> (tSmallBlockListLen = 0, ulTmp = ulStartblock;
+<a name="l00049"></a>00049 tSmallBlockListLen < tBBDLen && ulTmp != END_OF_CHAIN;
+<a name="l00050"></a>00050 tSmallBlockListLen++, ulTmp = aulBBD[ulTmp]) {
+<a name="l00051"></a>00051 <span class="keywordflow">if</span> (ulTmp >= (ULONG)tBBDLen) {
+<a name="l00052"></a>00052 DBG_DEC(ulTmp);
+<a name="l00053"></a>00053 DBG_DEC(tBBDLen);
+<a name="l00054"></a>00054 werr(1, <span class="stringliteral">"The Big Block Depot is damaged"</span>);
+<a name="l00055"></a>00055 }
+<a name="l00056"></a>00056 }
+<a name="l00057"></a>00057 DBG_DEC(tSmallBlockListLen);
+<a name="l00058"></a>00058
+<a name="l00059"></a>00059 <span class="keywordflow">if</span> (tSmallBlockListLen == 0) {
+<a name="l00060"></a>00060 <span class="comment">/* There is no small block list */</span>
+<a name="l00061"></a>00061 fail(ulStartblock != END_OF_CHAIN);
+<a name="l00062"></a>00062 aulSmallBlockList = NULL;
+<a name="l00063"></a>00063 <span class="keywordflow">return</span> TRUE;
+<a name="l00064"></a>00064 }
+<a name="l00065"></a>00065
+<a name="l00066"></a>00066 <span class="comment">/* Create the small block list */</span>
+<a name="l00067"></a>00067 tSize = tSmallBlockListLen * <span class="keyword">sizeof</span>(ULONG);
+<a name="l00068"></a>00068 aulSmallBlockList = xmalloc(tSize);
+<a name="l00069"></a>00069 <span class="keywordflow">for</span> (iIndex = 0, ulTmp = ulStartblock;
+<a name="l00070"></a>00070 iIndex < (int)tBBDLen && ulTmp != END_OF_CHAIN;
+<a name="l00071"></a>00071 iIndex++, ulTmp = aulBBD[ulTmp]) {
+<a name="l00072"></a>00072 <span class="keywordflow">if</span> (ulTmp >= (ULONG)tBBDLen) {
+<a name="l00073"></a>00073 DBG_DEC(ulTmp);
+<a name="l00074"></a>00074 DBG_DEC(tBBDLen);
+<a name="l00075"></a>00075 werr(1, <span class="stringliteral">"The Big Block Depot is damaged"</span>);
+<a name="l00076"></a>00076 }
+<a name="l00077"></a>00077 aulSmallBlockList[iIndex] = ulTmp;
+<a name="l00078"></a>00078 NO_DBG_DEC(aulSmallBlockList[iIndex]);
+<a name="l00079"></a>00079 }
+<a name="l00080"></a>00080 <span class="keywordflow">return</span> TRUE;
+<a name="l00081"></a>00081 } <span class="comment">/* end of bCreateSmallBlockList */</span>
+<a name="l00082"></a>00082
+<a name="l00083"></a>00083 <span class="comment">/*</span>
+<a name="l00084"></a>00084 <span class="comment"> * ulDepotOffset - get the depot offset the block list</span>
+<a name="l00085"></a>00085 <span class="comment"> */</span>
+<a name="l00086"></a>00086 ULONG
+<a name="l00087"></a>00087 ulDepotOffset(ULONG ulIndex, <span class="keywordtype">size_t</span> tBlockSize)
+<a name="l00088"></a>00088 {
+<a name="l00089"></a>00089 ULONG ulTmp;
+<a name="l00090"></a>00090 <span class="keywordtype">size_t</span> tTmp;
+<a name="l00091"></a>00091
+<a name="l00092"></a>00092 fail(ulIndex >= ULONG_MAX / BIG_BLOCK_SIZE);
+<a name="l00093"></a>00093
+<a name="l00094"></a>00094 <span class="keywordflow">switch</span> (tBlockSize) {
+<a name="l00095"></a>00095 <span class="keywordflow">case</span> BIG_BLOCK_SIZE:
+<a name="l00096"></a>00096 <span class="keywordflow">return</span> (ulIndex + 1) * BIG_BLOCK_SIZE;
+<a name="l00097"></a>00097 <span class="keywordflow">case</span> SMALL_BLOCK_SIZE:
+<a name="l00098"></a>00098 tTmp = (size_t)(ulIndex / SIZE_RATIO);
+<a name="l00099"></a>00099 ulTmp = ulIndex % SIZE_RATIO;
+<a name="l00100"></a>00100 <span class="keywordflow">if</span> (aulSmallBlockList == NULL ||
+<a name="l00101"></a>00101 tTmp >= tSmallBlockListLen) {
+<a name="l00102"></a>00102 DBG_HEX(aulSmallBlockList);
+<a name="l00103"></a>00103 DBG_DEC(tSmallBlockListLen);
+<a name="l00104"></a>00104 DBG_DEC(tTmp);
+<a name="l00105"></a>00105 <span class="keywordflow">return</span> 0;
+<a name="l00106"></a>00106 }
+<a name="l00107"></a>00107 <span class="keywordflow">return</span> ((aulSmallBlockList[tTmp] + 1) * SIZE_RATIO +
+<a name="l00108"></a>00108 ulTmp) * SMALL_BLOCK_SIZE;
+<a name="l00109"></a>00109 <span class="keywordflow">default</span>:
+<a name="l00110"></a>00110 DBG_DEC(tBlockSize);
+<a name="l00111"></a>00111 DBG_FIXME();
+<a name="l00112"></a>00112 <span class="keywordflow">return</span> 0;
+<a name="l00113"></a>00113 }
+<a name="l00114"></a>00114 } <span class="comment">/* end of ulDepotOffset */</span>
+</pre></div></div>
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