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46 <div class="section" id="add-a-user-custom-command">
47 <h1>Add a user custom command<a class="headerlink" href="#add-a-user-custom-command" title="Permalink to this headline">¶</a></h1>
48 <div class="section" id="introduction">
49 <h2>Introduction<a class="headerlink" href="#introduction" title="Permalink to this headline">¶</a></h2>
50 <div class="admonition note">
51 <p class="first admonition-title">Note</p>
52 <p class="last">This documentation is for <a class="reference external" href="https://docs.python.org/2.7">Python</a> developers.</p>
54 <p>The salomeTools product provides a simple way to develop commands.
55 The first thing to do is to add a file with <em>.py</em> extension in the <tt class="docutils literal"><span class="pre">commands</span></tt> directory of salomeTools.</p>
56 <p>Here are the basic requirements that must be followed in this file in order to add a command.</p>
58 <div class="section" id="basic-requirements">
59 <h2>Basic requirements<a class="headerlink" href="#basic-requirements" title="Permalink to this headline">¶</a></h2>
60 <p>By adding a file <em>mycommand.py</em> in the <tt class="docutils literal"><span class="pre">commands</span></tt> directory, salomeTools will define a new command named <tt class="docutils literal"><span class="pre">mycommand</span></tt>.</p>
61 <p>In <em>mycommand.py</em>, there must be the following method:</p>
62 <div class="highlight-python"><div class="highlight"><pre><span class="k">def</span> <span class="nf">run</span><span class="p">(</span><span class="n">args</span><span class="p">,</span> <span class="n">runner</span><span class="p">,</span> <span class="n">logger</span><span class="p">):</span>
63 <span class="c"># your algorithm ...</span>
64 <span class="k">pass</span>
67 <p>In fact, at this point, the command will already be functional.
68 But there are some useful services provided by salomeTools :</p>
70 <li>You can give some options to your command:</li>
72 <div class="highlight-python"><div class="highlight"><pre><span class="kn">import</span> <span class="nn">src</span>
74 <span class="c"># Define all possible option for mycommand command : 'sat mycommand <options>'</span>
75 <span class="n">parser</span> <span class="o">=</span> <span class="n">src</span><span class="o">.</span><span class="n">options</span><span class="o">.</span><span class="n">Options</span><span class="p">()</span>
76 <span class="n">parser</span><span class="o">.</span><span class="n">add_option</span><span class="p">(</span><span class="s">'m'</span><span class="p">,</span> <span class="s">'myoption'</span><span class="p">,</span> \
77 <span class="s">'boolean'</span><span class="p">,</span> <span class="s">'myoption'</span><span class="p">,</span> \
78 <span class="s">'My option changes the behavior of my command.'</span><span class="p">)</span>
80 <span class="k">def</span> <span class="nf">run</span><span class="p">(</span><span class="n">args</span><span class="p">,</span> <span class="n">runner</span><span class="p">,</span> <span class="n">logger</span><span class="p">):</span>
81 <span class="c"># Parse the options</span>
82 <span class="p">(</span><span class="n">options</span><span class="p">,</span> <span class="n">args</span><span class="p">)</span> <span class="o">=</span> <span class="n">parser</span><span class="o">.</span><span class="n">parse_args</span><span class="p">(</span><span class="n">args</span><span class="p">)</span>
83 <span class="c"># algorithm</span>
87 <li>You can add a <em>description</em> method that will display a message when the user will call the help:</li>
89 <div class="highlight-python"><div class="highlight"><pre> <span class="kn">import</span> <span class="nn">src</span>
91 <span class="c"># Define all possible option for mycommand command : 'sat mycommand <options>'</span>
92 <span class="n">parser</span> <span class="o">=</span> <span class="n">src</span><span class="o">.</span><span class="n">options</span><span class="o">.</span><span class="n">Options</span><span class="p">()</span>
93 <span class="n">parser</span><span class="o">.</span><span class="n">add_option</span><span class="p">(</span><span class="s">'m'</span><span class="p">,</span> <span class="s">'myoption'</span><span class="p">,</span> \
94 <span class="s">'boolean'</span><span class="p">,</span> <span class="s">'myoption'</span><span class="p">,</span> \
95 <span class="s">'My option changes the behavior of my command.'</span><span class="p">)</span>
97 <span class="hll"> <span class="k">def</span> <span class="nf">description</span><span class="p">():</span>
98 </span><span class="hll"> <span class="k">return</span> <span class="n">_</span><span class="p">(</span><span class="s">"The help of mycommand."</span><span class="p">)</span>
100 <span class="k">def</span> <span class="nf">run</span><span class="p">(</span><span class="n">args</span><span class="p">,</span> <span class="n">runner</span><span class="p">,</span> <span class="n">logger</span><span class="p">):</span>
101 <span class="c"># Parse the options</span>
102 <span class="p">(</span><span class="n">options</span><span class="p">,</span> <span class="n">args</span><span class="p">)</span> <span class="o">=</span> <span class="n">parser</span><span class="o">.</span><span class="n">parse_args</span><span class="p">(</span><span class="n">args</span><span class="p">)</span>
103 <span class="c"># algorithm</span>
107 <div class="section" id="howto-access-salometools-config-and-other-commands">
108 <h2>HowTo access salomeTools config and other commands<a class="headerlink" href="#howto-access-salometools-config-and-other-commands" title="Permalink to this headline">¶</a></h2>
109 <p>The <em>runner</em> variable is an python instance of <em>Sat</em> class.
110 It gives access to <em>runner.cfg</em> which is the data model defined from all
111 <em>configuration pyconf files</em> of salomeTools
112 For example, <em>runner.cfg.APPLICATION.workdir</em>
113 contains the root directory of the current application.</p>
114 <p>The <em>runner</em> variable gives also access to other commands of salomeTools:</p>
115 <div class="highlight-python"><div class="highlight"><pre><span class="c"># as CLI_ 'sat prepare ...'</span>
116 <span class="n">runner</span><span class="o">.</span><span class="n">prepare</span><span class="p">(</span><span class="n">runner</span><span class="o">.</span><span class="n">cfg</span><span class="o">.</span><span class="n">VARS</span><span class="o">.</span><span class="n">application</span><span class="p">)</span>
120 <div class="section" id="howto-logger">
121 <h2>HowTo logger<a class="headerlink" href="#howto-logger" title="Permalink to this headline">¶</a></h2>
122 <p>The logger variable is an instance of the Logger class.
123 It gives access to the write method.</p>
124 <p>When this method is called, the message passed as parameter
125 will be displayed in the terminal and written in an xml log file.</p>
126 <div class="highlight-python"><div class="highlight"><pre><span class="n">logger</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="s">"My message"</span><span class="p">,</span> <span class="mi">3</span><span class="p">)</span> <span class="c"># 3 as default</span>
129 <p>The second argument defines the level of verbosity
130 that is wanted for this message.
131 It has to be between 1 and 5 (the most verbose level).</p>
133 <div class="section" id="hello-example">
134 <h2>HELLO example<a class="headerlink" href="#hello-example" title="Permalink to this headline">¶</a></h2>
135 <p>Here is a <em>hello</em> command, file <em>commands/hello.py</em>:</p>
136 <div class="highlight-python"><div class="highlight"><pre><span class="kn">import</span> <span class="nn">src</span>
138 <span class="sd">"""</span>
139 <span class="sd">hello.py</span>
140 <span class="sd">Define all possible options for hello command:</span>
141 <span class="sd">sat hello <options></span>
142 <span class="sd">"""</span>
144 <span class="n">parser</span> <span class="o">=</span> <span class="n">src</span><span class="o">.</span><span class="n">options</span><span class="o">.</span><span class="n">Options</span><span class="p">()</span>
145 <span class="n">parser</span><span class="o">.</span><span class="n">add_option</span><span class="p">(</span><span class="s">'f'</span><span class="p">,</span> <span class="s">'french'</span><span class="p">,</span> <span class="s">'boolean'</span><span class="p">,</span> <span class="s">'french'</span><span class="p">,</span> <span class="s">"french set hello message in french."</span><span class="p">)</span>
147 <span class="k">def</span> <span class="nf">description</span><span class="p">():</span>
148 <span class="k">return</span> <span class="n">_</span><span class="p">(</span><span class="s">"The help of hello."</span><span class="p">)</span>
150 <span class="k">def</span> <span class="nf">run</span><span class="p">(</span><span class="n">args</span><span class="p">,</span> <span class="n">runner</span><span class="p">,</span> <span class="n">logger</span><span class="p">):</span>
151 <span class="c"># Parse the options</span>
152 <span class="p">(</span><span class="n">options</span><span class="p">,</span> <span class="n">args</span><span class="p">)</span> <span class="o">=</span> <span class="n">parser</span><span class="o">.</span><span class="n">parse_args</span><span class="p">(</span><span class="n">args</span><span class="p">)</span>
153 <span class="c"># algorithm</span>
154 <span class="k">if</span> <span class="ow">not</span> <span class="n">options</span><span class="o">.</span><span class="n">french</span><span class="p">:</span>
155 <span class="n">logger</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="s">'HELLO! WORLD!</span><span class="se">\n</span><span class="s">'</span><span class="p">)</span>
156 <span class="k">else</span><span class="p">:</span>
157 <span class="n">logger</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="s">'Bonjour tout le monde!</span><span class="se">\n</span><span class="s">'</span><span class="p">)</span>
160 <p>A first call of hello:</p>
161 <div class="highlight-bash"><div class="highlight"><pre><span class="c"># Get the help of hello:</span>
164 <span class="c"># To get bonjour</span>
166 Bonjour tout le monde!
168 <span class="c"># To get hello</span>
172 <span class="c"># To get the log</span>
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188 <h3><a href="index.html">Table Of Contents</a></h3>
190 <li><a class="reference internal" href="#">Add a user custom command</a><ul>
191 <li><a class="reference internal" href="#introduction">Introduction</a></li>
192 <li><a class="reference internal" href="#basic-requirements">Basic requirements</a></li>
193 <li><a class="reference internal" href="#howto-access-salometools-config-and-other-commands">HowTo access salomeTools config and other commands</a></li>
194 <li><a class="reference internal" href="#howto-logger">HowTo logger</a></li>
195 <li><a class="reference internal" href="#hello-example">HELLO example</a></li>
199 <div class="relations">
200 <h3>Related Topics</h3>
202 <li><a href="index.html">Documentation overview</a><ul>
203 <li>Previous: <a href="commands/generate.html" title="previous chapter">Command generate</a></li>
204 <li>Next: <a href="commands/apidoc/modules.html" title="next chapter">src</a></li>
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