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unrar/Documentation/RARHeaderData.htm
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183
unrar/Documentation/RARHeaderData.htm
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<title>UnRAR.dll Manual</title>
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</head>
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<body>
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<h3>RARHeaderData structure</h3>
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<pre>
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struct RARHeaderData
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{
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char ArcName[260];
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char FileName[260];
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unsigned int Flags;
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unsigned int PackSize;
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unsigned int UnpSize;
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unsigned int HostOS;
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unsigned int FileCRC;
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unsigned int FileTime;
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unsigned int UnpVer;
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unsigned int Method;
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unsigned int FileAttr;
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char *CmtBuf;
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unsigned int CmtBufSize;
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unsigned int CmtSize;
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unsigned int CmtState;
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};
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</pre>
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<h3>Description</h3>
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<p>This structure is used by <a href="RARReadHeader.htm">RARReadHeader</a>
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function.</p>
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<h3>Structure fields</h3>
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<ul>
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<li>
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<i>ArcName</i>
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<blockquote>
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Output parameter which contains a zero terminated string of the
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current archive name. May be used to determine the current volume name.
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</blockquote>
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<li>
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<i>FileName</i>
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<blockquote>
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Output parameter which contains a zero terminated string of the
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file name in OEM (DOS) encoding.
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</blockquote>
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<li>
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<i>Flags</i>
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<blockquote>
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<p>Output parameter which contains file flags:</p>
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<table border="1">
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<tr><td>RHDF_SPLITBEFORE</td><td>0x01</td><td>File continued from previous volume</td></tr>
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<tr><td>RHDF_SPLITAFTER</td><td>0x02</td><td>File continued on next volume</td></tr>
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<tr><td>RHDF_ENCRYPTED</td><td>0x04</td><td>File encrypted with password</td></tr>
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<tr><td></td><td>0x08</td><td>Reserved</td></tr>
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<tr><td>RHDF_SOLID</td><td>0x10</td><td>Previous files data is used (solid flag)</td></tr>
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<tr><td>RHDF_DIRECTORY</td><td>0x20</td><td>Directory entry</td></tr>
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</table>
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<p>Other bits are reserved.</p>
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</blockquote>
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<li>
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<i>PackSize</i>
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<blockquote>
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Output parameter. Packed file size or size of file part if file
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was split between volumes.
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</blockquote>
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<li>
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<i>UnpSize</i>
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<blockquote>
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Output parameter. Unpacked file size.
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</blockquote>
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<li>
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<i>HostOS</i>
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<blockquote>
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<p>Output parameter. Operating system used to create the archive.</p>
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<table border="1">
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<tr><td>0</td><td>MS DOS</td></tr>
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<tr><td>1</td><td>OS/2</td></tr>
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<tr><td>2</td><td>Windows</td></tr>
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<tr><td>3</td><td>Unix</td></tr>
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</table>
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</blockquote>
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<li>
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<i>FileCRC</i>
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<blockquote>
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Output parameter, which contains unpacked file CRC32. In case of file
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parts split between volumes only the last part contains the correct
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CRC and it is accessible only in RAR_OM_LIST_INCSPLIT listing mode.
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</blockquote>
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<li>
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<i>FileTime</i>
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<blockquote>
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Output parameter. Contains the file modification date and time in standard
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MS DOS format.
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</blockquote>
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<li>
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<i>UnpVer</i>
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<blockquote>
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Output parameter. RAR version needed to extract file.
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It is encoded as 10 * Major version + minor version.
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</blockquote>
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<li>
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<i>Method</i>
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<blockquote>
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<p>Output parameter. Packing method.</p>
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<table border="1">
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<tr><td>0x30</td><td>Storing</td></tr>
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<tr><td>0x31</td><td>Fastest compression</td></tr>
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<tr><td>0x32</td><td>Fast compression</td></tr>
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<tr><td>0x33</td><td>Normal compression</td></tr>
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<tr><td>0x34</td><td>Good compression</td></tr>
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<tr><td>0x35</td><td>Best compression</td></tr>
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</table>
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</blockquote>
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<li>
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<i>FileAttr</i>
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<blockquote>
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Output parameter. File attributes.
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</blockquote>
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</ul>
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<li>
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<i>CmtBuf</i>
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<blockquote>
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<p>Input parameter. Points to the buffer for file comment.</p>
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<p>File comment support is not implemented in current unrar.dll version.
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Appropriate parameters are preserved only for compatibility
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with older versions.</p>
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<p>Set this field to NULL.</p>
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</blockquote>
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<li>
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<i>CmtBufSize</i>
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<blockquote>
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<p>Input parameter. Size of buffer for file comments.</p>
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<p>File comment support is not implemented in current unrar.dll version.</p>
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<p>Set this field to 0.</p>
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</blockquote>
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<li>
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<i>CmtSize</i>
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<blockquote>
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<p>Output parameter. Size of file comment read into buffer.<p>
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<p>File comment support is not implemented in current unrar.dll version.</p>
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<p>Always equal to 0.</p>
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</blockquote>
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<li>
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<i>CmtState</i>
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<blockquote>
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<p>Output parameter. State of file comment.<p>
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<p>File comment support is not implemented in current unrar.dll version.</p>
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<p>Always equal to 0.</p>
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</blockquote>
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</ul>
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<h3>See also</h3>
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<blockquote>
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<a href="RARReadHeader.htm">RARReadHeader</a> function.
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</blockquote>
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</body>
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</html>
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