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Symbian3/Examples/guid-6013a680-57f9-415b-8851-c4fa63356636/finddata_8c_source.html
author Dominic Pinkman <Dominic.Pinkman@Nokia.com>
Tue, 30 Mar 2010 16:16:55 +0100
changeset 6 43e37759235e
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
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<title>TB9.2 Example Applications: examples/PIPS/antiword/src/finddata.c Source File</title>
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<link href="tabs.css" rel="stylesheet" type="text/css"/>
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<link href="doxygen.css" rel="stylesheet" type="text/css"/>
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</head>
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<body>
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<!-- Generated by Doxygen 1.6.2 -->
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<h1>examples/PIPS/antiword/src/finddata.c</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
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<a name="l00002"></a>00002 <span class="comment"> * finddata.c</span>
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<a name="l00003"></a>00003 <span class="comment"> * Copyright (C) 2000-2002 A.J. van Os; Released under GPL</span>
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<a name="l00004"></a>00004 <span class="comment"> *</span>
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<a name="l00005"></a>00005 <span class="comment"> * Description:</span>
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<a name="l00006"></a>00006 <span class="comment"> * Find the blocks that contain the data of MS Word files</span>
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<a name="l00007"></a>00007 <span class="comment"> */</span>
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<a name="l00008"></a>00008
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<a name="l00009"></a>00009 <span class="preprocessor">#include &lt;stdio.h&gt;</span>
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<a name="l00010"></a>00010 <span class="preprocessor">#include &lt;stdlib.h&gt;</span>
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<a name="l00011"></a>00011 <span class="preprocessor">#include &quot;antiword.h&quot;</span>
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<a name="l00012"></a>00012
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<a name="l00013"></a>00013
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<a name="l00014"></a>00014 <span class="comment">/*</span>
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<a name="l00015"></a>00015 <span class="comment"> * bAddDataBlocks - Add the blocks to the data block list</span>
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<a name="l00016"></a>00016 <span class="comment"> *</span>
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<a name="l00017"></a>00017 <span class="comment"> * Returns TRUE when successful, otherwise FALSE</span>
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<a name="l00018"></a>00018 <span class="comment"> */</span>
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<a name="l00019"></a>00019 BOOL
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<a name="l00020"></a>00020 bAddDataBlocks(ULONG ulDataPosFirst, ULONG ulTotalLength,
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<a name="l00021"></a>00021         ULONG ulStartBlock, <span class="keyword">const</span> ULONG *aulBBD, <span class="keywordtype">size_t</span> tBBDLen)
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<a name="l00022"></a>00022 {
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<a name="l00023"></a>00023         data_block_type tDataBlock;
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<a name="l00024"></a>00024         ULONG   ulDataPos, ulOffset, ulIndex;
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<a name="l00025"></a>00025         <span class="keywordtype">long</span>    lToGo;
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<a name="l00026"></a>00026         BOOL    bSuccess;
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<a name="l00027"></a>00027
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<a name="l00028"></a>00028         fail(ulTotalLength &gt; (ULONG)LONG_MAX);
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<a name="l00029"></a>00029         fail(ulStartBlock &gt; MAX_BLOCKNUMBER &amp;&amp; ulStartBlock != END_OF_CHAIN);
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<a name="l00030"></a>00030         fail(aulBBD == NULL);
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<a name="l00031"></a>00031
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<a name="l00032"></a>00032         NO_DBG_HEX(ulDataPosFirst);
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<a name="l00033"></a>00033         NO_DBG_DEC(ulTotalLength);
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<a name="l00034"></a>00034
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<a name="l00035"></a>00035         lToGo = (long)ulTotalLength;
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<a name="l00036"></a>00036
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<a name="l00037"></a>00037         ulDataPos = ulDataPosFirst;
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<a name="l00038"></a>00038         ulOffset = ulDataPosFirst;
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<a name="l00039"></a>00039         <span class="keywordflow">for</span> (ulIndex = ulStartBlock;
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<a name="l00040"></a>00040              ulIndex != END_OF_CHAIN &amp;&amp; lToGo &gt; 0;
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<a name="l00041"></a>00041              ulIndex = aulBBD[ulIndex]) {
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<a name="l00042"></a>00042                 <span class="keywordflow">if</span> (ulIndex == UNUSED_BLOCK || ulIndex &gt;= (ULONG)tBBDLen) {
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<a name="l00043"></a>00043                         DBG_DEC(ulIndex);
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<a name="l00044"></a>00044                         DBG_DEC(tBBDLen);
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<a name="l00045"></a>00045                         <span class="keywordflow">return</span> FALSE;
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<a name="l00046"></a>00046                 }
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<a name="l00047"></a>00047                 <span class="keywordflow">if</span> (ulOffset &gt;= BIG_BLOCK_SIZE) {
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<a name="l00048"></a>00048                         ulOffset -= BIG_BLOCK_SIZE;
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<a name="l00049"></a>00049                         <span class="keywordflow">continue</span>;
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<a name="l00050"></a>00050                 }
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<a name="l00051"></a>00051                 tDataBlock.ulFileOffset =
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<a name="l00052"></a>00052                         (ulIndex + 1) * BIG_BLOCK_SIZE + ulOffset;
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<a name="l00053"></a>00053                 tDataBlock.ulDataPos = ulDataPos;
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<a name="l00054"></a>00054                 tDataBlock.ulLength = min(BIG_BLOCK_SIZE - ulOffset,
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<a name="l00055"></a>00055                                                 (ULONG)lToGo);
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<a name="l00056"></a>00056                 fail(tDataBlock.ulLength &gt; BIG_BLOCK_SIZE);
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<a name="l00057"></a>00057                 ulOffset = 0;
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<a name="l00058"></a>00058                 <span class="keywordflow">if</span> (!bAdd2DataBlockList(&amp;tDataBlock)) {
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<a name="l00059"></a>00059                         DBG_HEX(tDataBlock.ulFileOffset);
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<a name="l00060"></a>00060                         DBG_HEX(tDataBlock.ulDataPos);
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<a name="l00061"></a>00061                         DBG_DEC(tDataBlock.ulLength);
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<a name="l00062"></a>00062                         <span class="keywordflow">return</span> FALSE;
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<a name="l00063"></a>00063                 }
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<a name="l00064"></a>00064                 ulDataPos += tDataBlock.ulLength;
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<a name="l00065"></a>00065                 lToGo -= (long)tDataBlock.ulLength;
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<a name="l00066"></a>00066         }
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<a name="l00067"></a>00067         bSuccess = lToGo == 0 ||
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<a name="l00068"></a>00068                 (ulTotalLength == (ULONG)LONG_MAX &amp;&amp; ulIndex == END_OF_CHAIN);
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<a name="l00069"></a>00069         DBG_DEC_C(!bSuccess, lToGo);
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<a name="l00070"></a>00070         DBG_DEC_C(!bSuccess, ulTotalLength);
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<a name="l00071"></a>00071         DBG_DEC_C(!bSuccess, ulIndex);
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<a name="l00072"></a>00072         <span class="keywordflow">return</span> bSuccess;
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<a name="l00073"></a>00073 } <span class="comment">/* end of bAddDataBlocks */</span>
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<a name="l00074"></a>00074
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<a name="l00075"></a>00075 <span class="comment">/*</span>
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<a name="l00076"></a>00076 <span class="comment"> * bGet6DocumentData - make a list of the data blocks of Word 6/7 files</span>
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<a name="l00077"></a>00077 <span class="comment"> *</span>
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<a name="l00078"></a>00078 <span class="comment"> * Code for &quot;fast saved&quot; files.</span>
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<a name="l00079"></a>00079 <span class="comment"> *</span>
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<a name="l00080"></a>00080 <span class="comment"> * Returns TRUE when successful, otherwise FALSE</span>
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<a name="l00081"></a>00081 <span class="comment"> */</span>
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<a name="l00082"></a>00082 BOOL
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<a name="l00083"></a>00083 bGet6DocumentData(FILE *pFile, ULONG ulStartBlock,
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<a name="l00084"></a>00084         <span class="keyword">const</span> ULONG *aulBBD, <span class="keywordtype">size_t</span> tBBDLen, <span class="keyword">const</span> UCHAR *aucHeader)
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<a name="l00085"></a>00085 {
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<a name="l00086"></a>00086         UCHAR   *aucBuffer;
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<a name="l00087"></a>00087         ULONG   ulBeginTextInfo, ulOffset, ulTotLength;
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<a name="l00088"></a>00088         <span class="keywordtype">size_t</span>  tTextInfoLen;
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<a name="l00089"></a>00089         <span class="keywordtype">int</span>     iIndex, iOff, iType, iLen, iPieces;
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<a name="l00090"></a>00090
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<a name="l00091"></a>00091         DBG_MSG(<span class="stringliteral">&quot;bGet6DocumentData&quot;</span>);
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<a name="l00092"></a>00092
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<a name="l00093"></a>00093         fail(pFile == NULL);
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<a name="l00094"></a>00094         fail(aulBBD == NULL);
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<a name="l00095"></a>00095         fail(aucHeader == NULL);
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<a name="l00096"></a>00096
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<a name="l00097"></a>00097         ulBeginTextInfo = ulGetLong(0x160, aucHeader);
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<a name="l00098"></a>00098         DBG_HEX(ulBeginTextInfo);
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<a name="l00099"></a>00099         tTextInfoLen = (size_t)ulGetLong(0x164, aucHeader);
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<a name="l00100"></a>00100         DBG_DEC(tTextInfoLen);
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<a name="l00101"></a>00101
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<a name="l00102"></a>00102         aucBuffer = xmalloc(tTextInfoLen);
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<a name="l00103"></a>00103         <span class="keywordflow">if</span> (!bReadBuffer(pFile, ulStartBlock,
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<a name="l00104"></a>00104                         aulBBD, tBBDLen, BIG_BLOCK_SIZE,
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<a name="l00105"></a>00105                         aucBuffer, ulBeginTextInfo, tTextInfoLen)) {
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<a name="l00106"></a>00106                 aucBuffer = xfree(aucBuffer);
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<a name="l00107"></a>00107                 <span class="keywordflow">return</span> FALSE;
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<a name="l00108"></a>00108         }
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<a name="l00109"></a>00109         NO_DBG_PRINT_BLOCK(aucBuffer, tTextInfoLen);
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<a name="l00110"></a>00110
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<a name="l00111"></a>00111         iOff = 0;
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<a name="l00112"></a>00112         <span class="keywordflow">while</span> (iOff &lt; (<span class="keywordtype">int</span>)tTextInfoLen) {
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<a name="l00113"></a>00113                 iType = (int)ucGetByte(iOff, aucBuffer);
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<a name="l00114"></a>00114                 iOff++;
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<a name="l00115"></a>00115                 <span class="keywordflow">if</span> (iType == 0) {
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<a name="l00116"></a>00116                         iOff++;
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<a name="l00117"></a>00117                         <span class="keywordflow">continue</span>;
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<a name="l00118"></a>00118                 }
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<a name="l00119"></a>00119                 iLen = (int)usGetWord(iOff, aucBuffer);
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<a name="l00120"></a>00120                 iOff += 2;
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<a name="l00121"></a>00121                 <span class="keywordflow">if</span> (iType == 1) {
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<a name="l00122"></a>00122                         iOff += iLen;
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<a name="l00123"></a>00123                         <span class="keywordflow">continue</span>;
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<a name="l00124"></a>00124                 }
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<a name="l00125"></a>00125                 <span class="keywordflow">if</span> (iType != 2) {
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<a name="l00126"></a>00126                         werr(0, <span class="stringliteral">&quot;Unknown type of &#39;fastsaved&#39; format&quot;</span>);
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<a name="l00127"></a>00127                         aucBuffer = xfree(aucBuffer);
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<a name="l00128"></a>00128                         <span class="keywordflow">return</span> FALSE;
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<a name="l00129"></a>00129                 }
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<a name="l00130"></a>00130                 <span class="comment">/* Type 2 */</span>
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<a name="l00131"></a>00131                 NO_DBG_DEC(iLen);
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<a name="l00132"></a>00132                 iOff += 2;
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<a name="l00133"></a>00133                 iPieces = (iLen - 4) / 12;
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<a name="l00134"></a>00134                 DBG_DEC(iPieces);
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<a name="l00135"></a>00135                 <span class="keywordflow">for</span> (iIndex = 0; iIndex &lt; iPieces; iIndex++) {
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<a name="l00136"></a>00136                         ulOffset = ulGetLong(
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<a name="l00137"></a>00137                                 iOff + (iPieces + 1) * 4 + iIndex * 8 + 2,
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<a name="l00138"></a>00138                                 aucBuffer);
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<a name="l00139"></a>00139                         ulTotLength = ulGetLong(iOff + (iIndex + 1) * 4,
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<a name="l00140"></a>00140                                                 aucBuffer) -
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<a name="l00141"></a>00141                                         ulGetLong(iOff + iIndex * 4,
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<a name="l00142"></a>00142                                                 aucBuffer);
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<a name="l00143"></a>00143                         <span class="keywordflow">if</span> (!bAddDataBlocks(ulOffset, ulTotLength,
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<a name="l00144"></a>00144                                         ulStartBlock,
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<a name="l00145"></a>00145                                         aulBBD, tBBDLen)) {
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<a name="l00146"></a>00146                                 aucBuffer = xfree(aucBuffer);
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<a name="l00147"></a>00147                                 <span class="keywordflow">return</span> FALSE;
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<a name="l00148"></a>00148                         }
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<a name="l00149"></a>00149                 }
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<a name="l00150"></a>00150                 <span class="keywordflow">break</span>;
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<a name="l00151"></a>00151         }
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<a name="l00152"></a>00152         aucBuffer = xfree(aucBuffer);
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<a name="l00153"></a>00153         <span class="keywordflow">return</span> TRUE;
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<a name="l00154"></a>00154 } <span class="comment">/* end of bGet6DocumentData */</span>
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</pre></div></div>
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<hr size="1"/><address style="text-align: right;"><small>Generated by&nbsp;
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<a href="http://www.doxygen.org/index.html">
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<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.6.2 </small></address>
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</body>
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</html>
FCL/sftools/depl/docscontent