shimatta
/
metrixpp


			
				
					
						
						
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              <td valign="top"><h3 id="Overview">Overview</h3>

                <p><span class="normalImportance">Metrix++</span> is the
                platform to collect and analyse code metrics.</p>
                <ul>
                  <li>It has got plugin based architecture, so it is easy to
                    add support for new languages and/or define new metrics
                    and/or create new pre- and post-processing tools.</li>
                  <li>Every metric has got 'turn-on' and other configuration
                    options.</li>
                  <li>There is no predefined thresholds for metrics or rules.
                    You can choose and configure any limit you want.</li>
                  <li>It scales well to big code bases. For example initial
                    parsing of about 10000 files takes 2-3 minutes on average
                    PC, and ONLY 10-20 seconds for iterative re-run. Reporting
                    summary results and exceeded limits is less than 1 - 10
                    seconds.</li>
                  <li>It can compare results for 2 code snapshots (collections)
                    and differentiate added regions (classes, functions, etc.),
                    modified regions and unchanged regions.</li>
                  <li>As a result, easy deployment is guaranteed into legacy
                    software, helping you to deal with legacy code effiently -
                    either enforce 'leave it not worse than it was before' rule
                    or motivate re-factoring.</li>
                </ul>

                <h4>Standard Plugins</h4>

                <p>The distributive includes a set of standard plugins:</p>
                <ul>
                  <li><h4>Code parsers</h4>
                    <ul>
                      <li><span class="normalImportance">C/C++</span> parser
                        recognises definition of namespaces, definition of
                        classes/structs (including enclosed in functions),
                        templates and definition of functions/operators</li>
                      <li><span class="normalImportance">C#</span> parser
                        recognises definition of namespaces, definition of
                        classes/structs (including enclosed in functions),
                        interfaces, generics, definition of
                      functions/operators</li>
                      <li><span class="normalImportance">Java</span> parser
                        recognises definition of classes (including local in
                        functions), interfaces, generics and functions</li>
                    </ul>
                  </li>
                  <li><h4>Metrics</h4>
                    <ul>
                      <li><span class="normalImportance">cyclomatic
                        complexity</span> (by McCabe) per function <span
                        class="lowImportance">[supports C/C++, C#, Java
                        languages]</span></li>
                      <li><span class="normalImportance">processing
                        errors</span> per file <span
                        class="lowImportance">[supports any file
                      type]</span></li>
                      <li><span class="normalImportance">processing time</span>
                        per file <span class="lowImportance">[supports any file
                        type]</span></li>
                    </ul>
                  </li>
                  <li><h4>Analysis tools</h4>
                    <ul>
                      <li><span class="normalImportance">export.py</span> -
                        exporter to xml, python or plain text of detailed
                        information per file and/or aggregated information per
                        file or directory <span
                        class="lowImportance">[aggregated data includes <span
                        class="normalImportance">sum</span>, <span
                        class="normalImportance">maximum</span>, <span
                        class="normalImportance">minimum</span>, <span
                        class="normalImportance">average</span> within a subset
                        of selected files or directories]</span></li>
                      <li><span class="normalImportance">limit.py</span> - a
                        tool to report regions exceeding speified thresholds,
                        which are configurable (output is plain text with
                        metadata compatible with gcc compiler warning
                      messages)</li>
                      <li><span class="normalImportance">info.py</span> - a
                        tool to show file metadata, such as properties,
                        namespaces and fields recorded</li>
                    </ul>
                  </li>
                </ul>

                <h3 id="Download">Download &amp; Installation</h3>

                <p>For the installation of the <span
                class="normalImportance">Metrix++</span> <a
                href="http://sourceforge.net/projects/metrixplusplus/files/">download
                the archive</a> with <span class="highImportance">the latest
                stable version</span> and unpack it to some folder.
                Corresponding checkout from the version control system:</p>

                <p><pre>&gt; svn checkout <a href="https://metrixplusplus.svn.sourceforge.net/svnroot/metrixplusplus/releases/">https://metrixplusplus.svn.sourceforge.net/svnroot/metrixplusplus/releases/</a>&lt;version&gt;</pre>
                </p>

                <p>Alternatively, there is an option to <a
                href="http://metrixplusplus.svn.sourceforge.net/viewvc/metrixplusplus/mainline/?view=tar">download
                tarball file</a> with <span class="highImportance">the latest
                development version</span> of the tool or checkout this version
                of <a
                href="http://metrixplusplus.svn.sourceforge.net/viewvc/metrixplusplus/">source
                code</a> from the version conrol system:</p>

                <p><pre>&gt; svn checkout <a href="https://metrixplusplus.svn.sourceforge.net/svnroot/metrixplusplus/mainline/">https://metrixplusplus.svn.sourceforge.net/svnroot/metrixplusplus/mainline/</a></pre>
                </p>

                <h4>Prerequisites:</h4>

                <p>Python Runtime Environment (version 2.7.0 or later, version
                3.0 has not been tested)</p>

                <h4>License:</h4>

                <p>This program is free software; you can redistribute it
                and/or modify it under the terms of the GNU General Public
                License as published by the Free Software Foundation; version 3
                of the License.</p>

                <p>This program is distributed in the hope that it will be
                useful, but WITHOUT ANY WARRANTY; without even the implied
                warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
                PURPOSE. See the GNU General Public License for more
                details.</p>

                <p>You should have received a copy of the GNU General Public
                License along with the <span
                class="normalImportance">Metriix++</span>; if not, contact <a
                href="mailto:avkonst@users.sourceforge.net">Project
                Administrator</a> and write to the Free Software Foundation,
                Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
                USA.</p>

                <h3 id="Documentation">Documentation</h3>

                <p>Tools are self-descriptive and have got comprehensive
                context help. Type in the command line: python
                &lt;tool-name&gt;.py --help</p>

                <h4>Known Limitations</h4>

                <p>Check 'doc/limitations.txt' file distributed with the tool
                or browse for recent version <a
                href="http://metrixplusplus.svn.sourceforge.net/viewvc/metrixplusplus/mainline/doc/limitations.txt">online</a>.</p>

                <h4>Basic Workflow</h4>

                <p>Assuming that you opened a terminal and your current working
                directory is in the root folder of the tool installed.</p>

                <p><strong>I.</strong> Start with running a collector tool,
                enabling a collection of cyclomatic complexity:</p>

                <p><pre>&gt; python <span class="highImportance">collect.py</span> <span class="normalImportance">--std.code.complexity.on</span> -- /path/to/your/project ../../path/to/some/other/project</pre>
                </p>

                <p>It will generate a database file in working directory with
                default name. In order to change the name or location, use
                corresponding command line option. Depending on a size of code
                base, collection may take seconds or minutes, but it is very
                fast in general. In order to achive the highest performance (~
                to calculation of crc32) for iterative re-scans, point out to
                the dabase file collected for the previous code revision:</p>

                <p><pre>&gt; python <span class="highImportance">collect.py</span> --std.code.complexity.on <span class="highImportance normalImportance">--general.db-file-prev=metrixpp-prev.db</span> --
 /path/to/your/project</pre>
                </p>

                <p>Paths are optional. If you do not specify a path, it will
                scan files in the current working directory. Check other
                available options for the tool by executing:</p>

                <p><pre>&gt; python <span class="highImportance">collect.py</span> <span class="normalImportance">--help</span></pre>
                </p>

                <p><strong>II.</strong> Secondly, export data using export
                tool.</p>

                <p><pre>&gt; python <span class="highImportance">export.py</span> --
<span class="lowImportance">&lt;export&gt;
    &lt;data&gt;
        &lt;info path="" id="1" /&gt;
        &lt;file-data /&gt;
        &lt;subfiles&gt;
        &lt;/subfiles&gt;
        &lt;subdirs&gt;
            &lt;subdir&gt;path&lt;/subdir&gt;
        &lt;/subdirs&gt;
        &lt;aggregated-data&gt;
            &lt;<span class="normalImportance">std.code.complexity</span>&gt;
                &lt;cyclomatic max="2" total="14.0" avg="0.168674698795" min="0" /&gt;
            &lt;/<span class="normalImportance">std.code.complexity</span>&gt;
        &lt;/aggregated-data&gt;
    &lt;/data&gt;
&lt;/export&gt;</span>
                </pre>
                </p>

                <p>By default, it exports all aggregated data for all files
                scanned in xml format. It is possible to re-configure output
                format to python or plain text. In order to narrow the scope,
                specify a path to directory or a file. In order to export only
                subset of metrics, specify them as well.</p>

                <p><pre>&gt; python <span class="highImportance">export.py</span> --general.format=<span class="normalImportance">python</span> --general.namespaces=<span class="normalImportance">std.code.complexity</span> --
 <span class="normalImportance">/path/to/your/project/subdir</span>
<span class="lowImportance">&lt;export&gt;
    ...
&lt;/export&gt;</span></pre>
                </p>

                <p>If you have got results collected for previous version,
                point out to the file using the corresponding option and the
                tool will add diff data.</p>

                <p><pre>&gt; python <span class="highImportance">export.py</span> --general.namespaces=<span class="normalImportance">std.code.complexity</span> --general.db-file-prev=<span class="normalImportance">metrixpp-prev.db</span> --
<span class="lowImportance">&lt;export&gt;
    &lt;data&gt;
        &lt;info path="" id="1" /&gt;
        &lt;file-data /&gt;
        &lt;subfiles&gt;
        &lt;/subfiles&gt;
        &lt;subdirs&gt;
            &lt;subdir&gt;path&lt;/subdir&gt;
        &lt;/subdirs&gt;
        &lt;aggregated-data&gt;
            &lt;<span class="normalImportance">std.code.complexity</span>&gt;
                &lt;cyclomatic max="2" total="14.0" avg="0.168674698795" min="0"&gt;
                    &lt;<span class="normalImportance">__diff__ max="0" total="0.0" avg="0.0" min="0"</span> /&gt;
                &lt;/cyclomatic&gt;
            &lt;/<span class="normalImportance">std.code.complexity</span>&gt;
        &lt;/aggregated-data&gt;
    &lt;/data&gt;
&lt;/export&gt;</span>
                </pre>
                </p>

                <p>Check other available options for the tool by executing:</p>

                <p><pre>&gt; python <span class="highImportance">export.py</span> <span class="normalImportance">--help</span></pre>
                </p>

                <p><strong>III.</strong> Finally, identify code regions which
                exceed a specified limit, applying it to all scanned files:</p>

                <p><pre>&gt; python <span class="highImportance">limit.py</span> --general.max-limit=<span class="normalImportance">std.code.complexity</span><strong>:</strong><span class="normalImportance">cyclomatic</span><strong>:</strong><span class="normalImportance">7</span><strong> </strong>--
<span class="lowImportance">/path/to/your/project/ui/notifications.cpp:72: warning: Metric '<span class="normalImportance">std.code.complexity</span>/<span class="normalImportance">cyclomatic</span>' for
 region 'doFont' exceeds the limit.
        Metric name    : <span class="normalImportance">std.code.complexity</span>/<span class="normalImportance">cyclomatic</span>
        Region name    : doFont
        Metric value   : 10
        Modified       : None
        Change trend   : None
        Limit          : 7
/path/to/your/project/ui/notifications.cpp:144: warning: Metric '<span class="normalImportance">std.code.complexity</span>/<span class="normalImportance">cyclomatic</span>' for
 region 'doStyle' exceeds the limit.
        Metric name    : <span class="normalImportance">std.code.complexity</span>/<span class="normalImportance">cyclomatic</span>
        Region name    : doStyle
        Metric value   : 9
        Modified       : None
        Change trend   : None
        Limit          : 7</span></pre>
                </p>

                <p>You can limit the scope of analysis by defining paths to
                directories or files.If you have got results collected for
                previous version, point out to the file using the corresponding
                option and the tool will notify about change status:</p>

                <p><pre>&gt; python <span class="highImportance">limit.py</span> --general.max-limit=std.code.complexity<strong>:</strong>cyclomatic<strong>:</strong>7
 --general.db-file-prev=<span class="normalImportance">metrixpp-prev.db</span> --
<span class="lowImportance normalImportance">/path/to/your/project/ui/notifications.cpp:72: warning: Metric 'std.code.complexity/cyclomatic' for
 region 'doFont' exceeds the limit.
        Metric name    : std.code.complexity/cyclomatic
        Region name    : doFont
        Metric value   : 10
        Modified       : <span class="normalImportance">True</span>
        Change trend   : <span class="normalImportance">0</span>
        Limit          : 7
/path/to/your/project/ui/notifications.cpp:144: warning: Metric 'std.code.complexity/cyclomatic' for
 region 'doStyle' exceeds the limit.
        Metric name    : std.code.complexity/cyclomatic
        Region name    : doStyle
        Metric value   : 9
        Modified       : <span class="normalImportance">True</span>
        Change trend   : <span class="normalImportance">+1</span>
        Limit          : 7</span></pre>
                </p>

                <p>Another useful option for this tool helps you to <span
                class="highImportance">deal with legacy code</span>. It is not
                unusual if you have got enormous number of warnings enabling
                new thresholds for the code designed in the past, which has not
                be profiled/targeted to specific metric limits. By default the
                tool warns about all code regions, ignoring their change
                status. You can reconfigure it to one of the following:</p>
                <ul>
                  <li>warn only about <span class="normalImportance">new</span>
                    code regions (functions, classes):</li>
                </ul>

                <p><pre>&gt; python <span class="highImportance">limit.py</span> --general.max-limit=std.code.complexity<strong>:</strong>cyclomatic<strong>:</strong>7
 --general.db-file-prev=metrixpp-prev.db <span class="normalImportance">--general.warn=<strong>new</strong></span> --</pre>
                </p>
                <ul>
                  <li>warn about <span class="normalImportance">new</span> code
                    regions and <span class="normalImportance">modifed regions
                    <strong>regressing</strong> the metric</span> (enforces the
                    rule 'leave not worse than it was before'):</li>
                </ul>

                <p><pre>&gt; python <span class="highImportance">limit.py</span> --general.max-limit=std.code.complexity<strong>:</strong>cyclomatic<strong>:</strong>7
 --general.db-file-prev=metrixpp-prev.db <span class="normalImportance">--general.warn=<strong>trend</strong></span> --
<span class="lowImportance normalImportance">/path/to/your/project/ui/notifications.cpp:144: warning: Metric 'std.code.complexity/cyclomatic' for
 region 'doStyle' exceeds the limit.
        Metric name    : std.code.complexity/cyclomatic
        Region name    : doStyle
        Metric value   : 9
        Modified       : <span class="normalImportance">True</span>
        Change trend   : <span class="normalImportance"><strong>+1</strong></span>
        Limit          : 7</span></pre>
                </p>
                <ul>
                  <li>warn about <span class="normalImportance">new</span> and
                    <span class="normalImportance">all modified regions</span>
                    (motivates for refactoring of legacy code): </li>
                </ul>

                <p><pre>&gt; python <span class="highImportance">limit.py</span> --general.max-limit=std.code.complexity<strong>:</strong>cyclomatic<strong>:</strong>7
 --general.db-file-prev=metrixpp-prev.db <span class="normalImportance">--general.warn=<strong>touched</strong></span> --
<span class="lowImportance normalImportance">/path/to/your/project/ui/notifications.cpp:72: warning: Metric 'std.code.complexity/cyclomatic' for
 region 'doFont' exceeds the limit.
        Metric name    : std.code.complexity/cyclomatic
        Region name    : doFont
        Metric value   : 10
        Modified       : <span class="normalImportance"><strong>True</strong></span>
        Change trend   : <span class="normalImportance">0</span>
        Limit          : 7
/path/to/your/project/ui/notifications.cpp:144: warning: Metric 'std.code.complexity/cyclomatic' for
 region 'doStyle' exceeds the limit.
        Metric name    : std.code.complexity/cyclomatic
        Region name    : doStyle
        Metric value   : 9
        Modified       : <strong><span class="normalImportance">True</span></strong>
        Change trend   : <span class="normalImportance">+1</span>
        Limit          : 7</span></pre>
                </p>

                <p>Check other available options for the tool by executing:</p>

                <p><pre>&gt; python <span class="highImportance">limit.py</span> <span class="normalImportance">--help</span></pre>
                </p>

                <h3 id="Support">Bug Report &amp; Feature Request</h3>

                <p>Any types of enquiries are welcomed by e-mail to <a
                href="mailto:avkonst@users.sourceforge.net">project
                administrator</a>.</p>

                <h3 id="Createplugin">Create Plugin</h3>

                <p>Please, consider to join the project and <span
                class="normalImportance">contribute to the development</span>
                of the engine or <span class="normalImportance">include you
                plugins into the standard set</span> of plugins distributed
                together with this tool. Contact <a
                href="mailto:avkonst@users.sourceforge.net">project
                administrator</a> by e-mail.</p>

                <h4>New Metric</h4>

                <p>Unfortunately, there is no rich documentation at this stage.
                Briefly, any new plugin starts with creating 2 new files: 'ini'
                and 'py'. You can copy from other avaialble (for example, <a
                href="http://metrixplusplus.svn.sourceforge.net/viewvc/metrixplusplus/mainline/ext/std/code/complexity.ini">ini</a>
                and <a
                href="http://metrixplusplus.svn.sourceforge.net/viewvc/metrixplusplus/mainline/ext/std/code/complexity.py">py</a>
                files for the standard complexity plugin) and impelement the
                logic related to the new metric.</p>

                <h4>New Analysis Tool</h4>

                <p>Unfortunately, there is no rich documentation at this stage.
                Briefly, database API (class Loader implemented in '<a
                href="http://metrixplusplus.svn.sourceforge.net/viewvc/metrixplusplus/mainline/core/db/loader.py">core.db.loader</a>')
                is a starting point for any new post-analysis tool. There are 2
                standard tools (<a
                href="http://metrixplusplus.svn.sourceforge.net/viewvc/metrixplusplus/mainline/export.py">export.py</a>
                and <a
                href="http://metrixplusplus.svn.sourceforge.net/viewvc/metrixplusplus/mainline/limit.py">limit.py</a>)
                available which use this API.</p>

                <h4>New Language Support</h4>

                <p>Unfortunately, there is no rich documentation at this stage.
                Briefly:</p>
                <ul>
                  <li>a plugin is registered in the same way as a plugin for
                    new metric</li>
                  <li>it subscribes to directory reader plugin</li>
                  <li>parses a file in a callback, called by directory
                  reader</li>
                  <li>parser needs to identify markers (like comments, strings,
                    preprocessor) and regions (like functions, classes, etc.)
                    and tell about this to file data object passed as an
                    argument for the callback.</li>
                </ul>

                <p>Parser for C/C++ language can serve as <a
                href="http://metrixplusplus.svn.sourceforge.net/viewvc/metrixplusplus/mainline/ext/std/code/cpp.py">an
                example</a>. There useful options and tools are avaialble for
                trobuleshooting purposes during development:</p>
                <ul>
                  <li><span class="normalImportance">debug.py tool</span> is
                    helpful troubleshooting tool. In mode 'dumphtml' it
                    generates html code showing code highlightings</li>
                  <li><span
                    class="normalImportance">--general.nest-regions</span> for
                    export tool forces exporting of code structure in tree
                    format. It can be helpful for analysis of parser's
                  internals</li>
                  <li><span
                    class="normalImportance">--general.log-level</span>=GENERAL.LOG_LEVEL
                    for any tool is helpful to trace execution </li>
                </ul>

                <p>Finally, if there are any questions or enquires, please,
                feel free to contact <a
                href="mailto:avkonst@users.sourceforge.net">project
                administrator</a> by e-mail.</p>

                <h4>Source Code Repository</h4>

                <p>Source code is in the Subversion repository <a
                href="http://metrixplusplus.svn.sourceforge.net/viewvc/metrixplusplus/mainline/">(browse
                online)</a> used by the project. Corresponding checkout command
                is the following:</p>

                <p><pre>&gt; svn checkout <a href="https://metrixplusplus.svn.sourceforge.net/svnroot/metrixplusplus/mainline/">https://metrixplusplus.svn.sourceforge.net/svnroot/metrixplusplus/mainline/</a></pre>
                </p>

                <h4></h4>
              </td>
            </tr>
          </tbody>
        </table>
        <hr />
      </td>
    </tr>
    <tr>
      <td colspan="2">
        <div align="center">
        <p align="right">Copyright <strong>&copy; </strong>2009 - 2013<br />
        <a href="mailto:avkonst@users.sourceforge.net"><span
        class="normalImportance">Metrix++</span> Project</a></p>

        <p align="right">License: <a
        href="http://www.gnu.org/licenses/gpl.txt">GPL</a></p>
        </div>
      </td>
    </tr>
  </tbody>
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