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