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Previous: <a rel="previous" accesskey="p" href="Defining-status.html#Defining-status">Defining status</a>,
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<h5 class="subsubsection">16.9.2.5 Output parsers</h5>
<p class="noindent">There are cases in which GPS needs to parse the output of the VCS
commands: when querying the status, or when “annotating” a
file.
<p>The following parsers can be implemented in the <code>vcs</code> node.
<dl>
<dt><code><status_parser></code><b>, </b><code><local_status_parser></code><b> and </b><code><update_parser></code><dd>These parsers are used by the command VCS.status_parse, to parse a string for
the status of files controlled by a VCS.
<p>They accept the following child nodes:
<dl>
<dt><code><regexp></code><b> (mandatory)</b><dd>Indicates the regular expression to match.
<br><dt><code><file_index></code><dd>An index of a parenthesized expression in <code>regexp</code> that contains the name
of a file.
<br><dt><code><status_index></code><dd>An index of a parenthesized expression in <code>regexp</code> that contains the file
status. This status is passed through the regular expressions defined in the
<code>status_matcher</code> nodes, see below.
<br><dt><code><local_revision_index></code><dd>An index of a parenthesized expression in <code>regexp</code> that contains the name
of the local revision (the version of the file that was checked out).
<br><dt><code><repository_revision_index></code><dd>An index of a parenthesized expression in <code>regexp</code> that contains the name
of the repository revision (the latest version of the file in the VCS).
<br><dt><code><status_matcher></code><dd>A regular expression which, when matching an expressions, identifies the status
passed in the node attribute <code>label</code>.
</dl>
<br><dt><code><annotations_parser></code><dd>This parser is used by the command VCS.annotations_parse, to parse a string for
annotations in a file controlled by a VCS.
<p>It accepts the following child nodes:
<dl>
<dt><code><regexp></code><b> (mandatory)</b><dd>Indicates the regular expression to match.
<br><dt><code><repository_revision_index></code><b> (mandatory)</b><dd>An index of a parenthesized expression in <code>regexp</code> that contains the
repository revision of the line.
<br><dt><code><author_index></code><dd>An index of a parenthesized expression in <code>regexp</code> that contains the
author of the line.
<br><dt><code><date_index></code><dd>An index of a parenthesized expression in <code>regexp</code> that contains the
date of the line.
<br><dt><code><file_index></code><dd>An index of a parenthesized expression in <code>regexp</code> that indicates the
part of the line that belongs to the file.
<br><dt><code><tooltip_pattern></code><dd>A template pattern that will be used to format the tooltip information.
It can contain text and reference parenthesized expressions in
<code>regexp</code> using \<code>n</code> (where <code>n</code> represents the nth
expression in <code>regexp</code>).
</dl>
<br><dt><code><log_parser></code><dd>This parser is used by the command VCS.log_parse, to parse a string for
revision histories in a file controlled by a VCS.
<p>It accepts the following child nodes:
<dl>
<dt><code><regexp></code><b> (mandatory)</b><dd>Indicates the regular expression to match.
<br><dt><code><repository_revision_index></code><b> (mandatory)</b><dd>An index of a parenthesized expression in <code>regexp</code> that contains the
repository revision of the log.
<br><dt><code><author_index></code><dd>An index of a parenthesized expression in <code>regexp</code> that contains the
author of the log.
<br><dt><code><date_index></code><dd>An index of a parenthesized expression in <code>regexp</code> that contains the
date of the log.
<br><dt><code><log_index></code><dd>An index of a parenthesized expression in <code>regexp</code> that contains the
actual text of the log.
</dl>
<br><dt><code><revision_parser></code><dd>This parser is used by the command VCS.revision_parse, to parse a string for
revision tags and branches in a file controlled by a VCS.
<p>It accepts the following child nodes:
<dl>
<dt><code><regexp></code><b> (mandatory)</b><dd>Indicates the regular expression to match.
<br><dt><code><sym_index></code><b> (mandatory)</b><dd>An index of a parenthesized expression in <code>regexp</code> that contains the
tags or branches symbolic name of the revision.
<br><dt><code><repository_revision_index></code><b> (mandatory)</b><dd>An index of a parenthesized expression in <code>regexp</code> that contains the
repository revision number of the revision.
</dl>
</dl>
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