EVOLUTION-MANAGER

Edit File: api-revision-walking.html

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<body class="article">
<div id="header">
<h1>revision walking API</h1>
</div>
<div id="content">
<div id="preamble">
<div class="sectionbody">
<div class="paragraph"><p>The revision walking API offers functions to build a list of revisions
and then iterate over that list.</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_calling_sequence">Calling sequence</h2>
<div class="sectionbody">
<div class="paragraph"><p>The walking API has a given calling sequence: first you need to
initialize a rev_info structure, then add revisions to control what kind
of revision list do you want to get, finally you can iterate over the
revision list.</p></div>
</div>
</div>
<div class="sect1">
<h2 id="_functions">Functions</h2>
<div class="sectionbody">
<div class="dlist"><dl>
<dt class="hdlist1">
<code>init_revisions</code>
</dt>
<dd>
<p>
        Initialize a rev_info structure with default values. The second
        parameter may be NULL or can be prefix path, and then the <code>.prefix</code>
        variable will be set to it. This is typically the first function you
        want to call when you want to deal with a revision list. After calling
        this function, you are free to customize options, like set
        <code>.ignore_merges</code> to 0 if you don&#8217;t want to ignore merges, and so on. See
        <code>revision.h</code> for a complete list of available options.
</p>
</dd>
<dt class="hdlist1">
<code>add_pending_object</code>
</dt>
<dd>
<p>
        This function can be used if you want to add commit objects as revision
        information. You can use the <code>UNINTERESTING</code> object flag to indicate if
        you want to include or exclude the given commit (and commits reachable
        from the given commit) from the revision list.
</p>
<div class="admonitionblock">
<table><tr>
<td class="icon">
<div class="title">Note</div>
</td>
<td class="content">If you have the commits as a string list then you probably want to
use setup_revisions(), instead of parsing each string and using this
function.</td>
</tr></table>
</div>
</dd>
<dt class="hdlist1">
<code>setup_revisions</code>
</dt>
<dd>
<p>
        Parse revision information, filling in the <code>rev_info</code> structure, and
        removing the used arguments from the argument list. Returns the number
        of arguments left that weren&#8217;t recognized, which are also moved to the
        head of the argument list. The last parameter is used in case no
        parameter given by the first two arguments.
</p>
</dd>
<dt class="hdlist1">
<code>prepare_revision_walk</code>
</dt>
<dd>
<p>
        Prepares the rev_info structure for a walk. You should check if it
        returns any error (non-zero return code) and if it does not, you can
        start using get_revision() to do the iteration.
</p>
</dd>
<dt class="hdlist1">
<code>get_revision</code>
</dt>
<dd>
<p>
        Takes a pointer to a <code>rev_info</code> structure and iterates over it,
        returning a <code>struct commit *</code> each time you call it. The end of the
        revision list is indicated by returning a NULL pointer.
</p>
</dd>
<dt class="hdlist1">
<code>reset_revision_walk</code>
</dt>
<dd>
<p>
        Reset the flags used by the revision walking api. You can use
        this to do multiple sequencial revision walks.
</p>
</dd>
</dl></div>
</div>
</div>
<div class="sect1">
<h2 id="_data_structures">Data structures</h2>
<div class="sectionbody">
<div class="paragraph"><p>Talk about &lt;revision.h&gt;, things like:</p></div>
<div class="ulist"><ul>
<li>
<p>
two diff_options, one for path limiting, another for output;
</p>
</li>
<li>
<p>
remaining functions;
</p>
</li>
</ul></div>
<div class="paragraph"><p>(Linus, JC, Dscho)</p></div>
</div>
</div>
</div>
<div id="footnotes"><hr /></div>
<div id="footer">
<div id="footer-text">
Last updated 2013-06-10 20:01:55 UTC
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