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225 lines
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<title>Subversion: svn_txdelta_window_t Struct Reference</title>
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<h1>svn_txdelta_window_t Struct Reference<br>
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<small>
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[<a class="el" href="group__svn__delta__txt__delta.html">Text deltas</a>]</small>
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</h1><!-- doxytag: class="svn_txdelta_window_t" -->An <code><a class="el" href="structsvn__txdelta__window__t.html" title="An svn_txdelta_window_t object describes how to reconstruct a contiguous section...">svn_txdelta_window_t</a></code> object describes how to reconstruct a contiguous section of the target string (the "target view") using a specified contiguous region of the source string (the "source view").
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<a href="#_details">More...</a>
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<p>
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<code>#include <<a class="el" href="svn__delta_8h-source.html">svn_delta.h</a>></code>
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<table border="0" cellpadding="0" cellspacing="0">
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<tr><td></td></tr>
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<tr><td colspan="2"><br><h2>Data Fields</h2></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="svn__types_8h.html#726e581898461c1d3e7dbdb16d99dad0">svn_filesize_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="structsvn__txdelta__window__t.html#10d2a40ac83e175617f62655f0406bc6">sview_offset</a></td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">The offset of the source view for this window. <a href="#10d2a40ac83e175617f62655f0406bc6"></a><br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">apr_size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structsvn__txdelta__window__t.html#21b7264822ac959a9b83cc1774ac7ba4">sview_len</a></td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">The length of the source view for this window. <a href="#21b7264822ac959a9b83cc1774ac7ba4"></a><br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">apr_size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structsvn__txdelta__window__t.html#3593f77347e4fcf652d874ba42437e77">tview_len</a></td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">The length of the target view for this window, i.e. <a href="#3593f77347e4fcf652d874ba42437e77"></a><br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structsvn__txdelta__window__t.html#ade33ee11bba85cae28b7f41dd68dcfb">num_ops</a></td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">The number of instructions in this window. <a href="#ade33ee11bba85cae28b7f41dd68dcfb"></a><br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="structsvn__txdelta__window__t.html#96c0e790ae607343ac43346864f4e9b3">src_ops</a></td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">The number of svn_txdelta_source instructions in this window. <a href="#96c0e790ae607343ac43346864f4e9b3"></a><br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">const <a class="el" href="structsvn__txdelta__op__t.html">svn_txdelta_op_t</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="structsvn__txdelta__window__t.html#6b1a3158d09c4f45b3c293a6e5621753">ops</a></td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">The instructions for this window. <a href="#6b1a3158d09c4f45b3c293a6e5621753"></a><br></td></tr>
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<tr><td class="memItemLeft" nowrap align="right" valign="top">const <a class="el" href="structsvn__string__t.html">svn_string_t</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="structsvn__txdelta__window__t.html#4b52b256b6129d69e33966eefc2fc007">new_data</a></td></tr>
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<tr><td class="mdescLeft"> </td><td class="mdescRight">New data, for use by any `svn_txdelta_new' instructions. <a href="#4b52b256b6129d69e33966eefc2fc007"></a><br></td></tr>
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</table>
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<hr><a name="_details"></a><h2>Detailed Description</h2>
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An <code><a class="el" href="structsvn__txdelta__window__t.html" title="An svn_txdelta_window_t object describes how to reconstruct a contiguous section...">svn_txdelta_window_t</a></code> object describes how to reconstruct a contiguous section of the target string (the "target view") using a specified contiguous region of the source string (the "source view").
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<p>
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It contains a series of instructions which assemble the new target string text by pulling together substrings from:<p>
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<ul>
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<li>the source view,</li></ul>
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<ul>
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<li>the previously constructed portion of the target view,</li></ul>
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<p>
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<ul>
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<li>a string of new data contained within the window structure</li></ul>
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<p>
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The source view must always slide forward from one window to the next; that is, neither the beginning nor the end of the source view may move to the left as we read from a window stream. This property allows us to apply deltas to non-seekable source streams without making a full copy of the source stream.
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<p>Definition at line <a class="el" href="svn__delta_8h-source.html#l00156">156</a> of file <a class="el" href="svn__delta_8h-source.html">svn_delta.h</a>.</p>
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<hr><h2>Field Documentation</h2>
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<a class="anchor" name="10d2a40ac83e175617f62655f0406bc6"></a><!-- doxytag: member="svn_txdelta_window_t::sview_offset" ref="10d2a40ac83e175617f62655f0406bc6" args="" -->
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<td class="memname"><a class="el" href="svn__types_8h.html#726e581898461c1d3e7dbdb16d99dad0">svn_filesize_t</a> <a class="el" href="structsvn__txdelta__window__t.html#10d2a40ac83e175617f62655f0406bc6">svn_txdelta_window_t::sview_offset</a> </td>
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The offset of the source view for this window.
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<p>Definition at line <a class="el" href="svn__delta_8h-source.html#l00160">160</a> of file <a class="el" href="svn__delta_8h-source.html">svn_delta.h</a>.</p>
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<a class="anchor" name="21b7264822ac959a9b83cc1774ac7ba4"></a><!-- doxytag: member="svn_txdelta_window_t::sview_len" ref="21b7264822ac959a9b83cc1774ac7ba4" args="" -->
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<td class="memname">apr_size_t <a class="el" href="structsvn__txdelta__window__t.html#21b7264822ac959a9b83cc1774ac7ba4">svn_txdelta_window_t::sview_len</a> </td>
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The length of the source view for this window.
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<p>
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<p>Definition at line <a class="el" href="svn__delta_8h-source.html#l00163">163</a> of file <a class="el" href="svn__delta_8h-source.html">svn_delta.h</a>.</p>
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<a class="anchor" name="3593f77347e4fcf652d874ba42437e77"></a><!-- doxytag: member="svn_txdelta_window_t::tview_len" ref="3593f77347e4fcf652d874ba42437e77" args="" -->
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<td class="memname">apr_size_t <a class="el" href="structsvn__txdelta__window__t.html#3593f77347e4fcf652d874ba42437e77">svn_txdelta_window_t::tview_len</a> </td>
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The length of the target view for this window, i.e.
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the number of bytes which will be reconstructed by the instruction stream.
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<p>Definition at line <a class="el" href="svn__delta_8h-source.html#l00167">167</a> of file <a class="el" href="svn__delta_8h-source.html">svn_delta.h</a>.</p>
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<a class="anchor" name="ade33ee11bba85cae28b7f41dd68dcfb"></a><!-- doxytag: member="svn_txdelta_window_t::num_ops" ref="ade33ee11bba85cae28b7f41dd68dcfb" args="" -->
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<td class="memname">int <a class="el" href="structsvn__txdelta__window__t.html#ade33ee11bba85cae28b7f41dd68dcfb">svn_txdelta_window_t::num_ops</a> </td>
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The number of instructions in this window.
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<p>
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<p>Definition at line <a class="el" href="svn__delta_8h-source.html#l00170">170</a> of file <a class="el" href="svn__delta_8h-source.html">svn_delta.h</a>.</p>
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<a class="anchor" name="96c0e790ae607343ac43346864f4e9b3"></a><!-- doxytag: member="svn_txdelta_window_t::src_ops" ref="96c0e790ae607343ac43346864f4e9b3" args="" -->
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<td class="memname">int <a class="el" href="structsvn__txdelta__window__t.html#96c0e790ae607343ac43346864f4e9b3">svn_txdelta_window_t::src_ops</a> </td>
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The number of svn_txdelta_source instructions in this window.
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If this number is 0, we don't need to read the source in order to reconstruct the target view.
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<p>Definition at line <a class="el" href="svn__delta_8h-source.html#l00176">176</a> of file <a class="el" href="svn__delta_8h-source.html">svn_delta.h</a>.</p>
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<a class="anchor" name="6b1a3158d09c4f45b3c293a6e5621753"></a><!-- doxytag: member="svn_txdelta_window_t::ops" ref="6b1a3158d09c4f45b3c293a6e5621753" args="" -->
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<td class="memname">const <a class="el" href="structsvn__txdelta__op__t.html">svn_txdelta_op_t</a>* <a class="el" href="structsvn__txdelta__window__t.html#6b1a3158d09c4f45b3c293a6e5621753">svn_txdelta_window_t::ops</a> </td>
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The instructions for this window.
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<p>Definition at line <a class="el" href="svn__delta_8h-source.html#l00179">179</a> of file <a class="el" href="svn__delta_8h-source.html">svn_delta.h</a>.</p>
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<a class="anchor" name="4b52b256b6129d69e33966eefc2fc007"></a><!-- doxytag: member="svn_txdelta_window_t::new_data" ref="4b52b256b6129d69e33966eefc2fc007" args="" -->
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<td class="memname">const <a class="el" href="structsvn__string__t.html">svn_string_t</a>* <a class="el" href="structsvn__txdelta__window__t.html#4b52b256b6129d69e33966eefc2fc007">svn_txdelta_window_t::new_data</a> </td>
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New data, for use by any `svn_txdelta_new' instructions.
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<p>Definition at line <a class="el" href="svn__delta_8h-source.html#l00182">182</a> of file <a class="el" href="svn__delta_8h-source.html">svn_delta.h</a>.</p>
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<hr>The documentation for this struct was generated from the following file:<ul>
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<li><a class="el" href="svn__delta_8h-source.html">svn_delta.h</a></ul>
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<hr size="1"><address style="text-align: right;"><small>Generated on Fri Oct 24 16:18:31 2008 for Subversion by
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<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.6 </small></address>
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