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<h1>Source code for postgresql.installation</h1><div class="highlight"><pre>
<span class="c">##</span>
<span class="c"># .installation</span>
<span class="c">##</span>
<span class="sd">"""</span>
<span class="sd">Collect and access PostgreSQL installation information.</span>
<span class="sd">"""</span>
<span class="kn">import</span> <span class="nn">sys</span>
<span class="kn">import</span> <span class="nn">os</span>
<span class="kn">import</span> <span class="nn">os.path</span>
<span class="kn">import</span> <span class="nn">subprocess</span>
<span class="kn">import</span> <span class="nn">io</span>
<span class="kn">import</span> <span class="nn">errno</span>
<span class="kn">from</span> <span class="nn">itertools</span> <span class="kn">import</span> <span class="n">cycle</span><span class="p">,</span> <span class="n">chain</span>
<span class="kn">from</span> <span class="nn">operator</span> <span class="kn">import</span> <span class="n">itemgetter</span>
<span class="kn">from</span> <span class="nn">.python.os</span> <span class="kn">import</span> <span class="n">find_executable</span><span class="p">,</span> <span class="n">close_fds</span><span class="p">,</span> <span class="n">platform_exe</span>
<span class="kn">from</span> <span class="nn">.</span> <span class="kn">import</span> <span class="n">versionstring</span>
<span class="kn">from</span> <span class="nn">.</span> <span class="kn">import</span> <span class="n">api</span> <span class="k">as</span> <span class="n">pg_api</span>
<span class="kn">from</span> <span class="nn">.</span> <span class="kn">import</span> <span class="n">string</span> <span class="k">as</span> <span class="n">pg_str</span>
<span class="c"># Get the output from the given command.</span>
<span class="c"># *args are transformed into "long options", '--' + x</span>
<span class="k">def</span> <span class="nf">get_command_output</span><span class="p">(</span><span class="n">exe</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">):</span>
<span class="n">pa</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">exe</span><span class="p">)</span> <span class="o">+</span> <span class="p">[</span>
<span class="s">'--'</span> <span class="o">+</span> <span class="n">x</span><span class="o">.</span><span class="n">strip</span><span class="p">()</span> <span class="k">for</span> <span class="n">x</span> <span class="ow">in</span> <span class="n">args</span> <span class="k">if</span> <span class="n">x</span> <span class="ow">is</span> <span class="ow">not</span> <span class="bp">None</span>
<span class="p">]</span>
<span class="n">p</span> <span class="o">=</span> <span class="n">subprocess</span><span class="o">.</span><span class="n">Popen</span><span class="p">(</span><span class="n">pa</span><span class="p">,</span>
<span class="n">close_fds</span> <span class="o">=</span> <span class="n">close_fds</span><span class="p">,</span>
<span class="n">stdout</span> <span class="o">=</span> <span class="n">subprocess</span><span class="o">.</span><span class="n">PIPE</span><span class="p">,</span>
<span class="n">stderr</span> <span class="o">=</span> <span class="n">subprocess</span><span class="o">.</span><span class="n">PIPE</span><span class="p">,</span>
<span class="n">stdin</span> <span class="o">=</span> <span class="n">subprocess</span><span class="o">.</span><span class="n">PIPE</span><span class="p">,</span>
<span class="n">shell</span> <span class="o">=</span> <span class="bp">False</span>
<span class="p">)</span>
<span class="n">p</span><span class="o">.</span><span class="n">stdin</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
<span class="n">p</span><span class="o">.</span><span class="n">stderr</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
<span class="k">while</span> <span class="bp">True</span><span class="p">:</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">rv</span> <span class="o">=</span> <span class="n">p</span><span class="o">.</span><span class="n">wait</span><span class="p">()</span>
<span class="k">break</span>
<span class="k">except</span> <span class="ne">OSError</span> <span class="k">as</span> <span class="n">e</span><span class="p">:</span>
<span class="k">if</span> <span class="n">e</span><span class="o">.</span><span class="n">errno</span> <span class="o">!=</span> <span class="n">errno</span><span class="o">.</span><span class="n">EINTR</span><span class="p">:</span>
<span class="k">raise</span>
<span class="k">if</span> <span class="n">rv</span> <span class="o">!=</span> <span class="mi">0</span><span class="p">:</span>
<span class="k">return</span> <span class="bp">None</span>
<span class="k">with</span> <span class="n">p</span><span class="o">.</span><span class="n">stdout</span><span class="p">,</span> <span class="n">io</span><span class="o">.</span><span class="n">TextIOWrapper</span><span class="p">(</span><span class="n">p</span><span class="o">.</span><span class="n">stdout</span><span class="p">)</span> <span class="k">as</span> <span class="n">txt</span><span class="p">:</span>
<span class="k">return</span> <span class="n">txt</span><span class="o">.</span><span class="n">read</span><span class="p">()</span>
<div class="viewcode-block" id="pg_config_dictionary"><a class="viewcode-back" href="../../reference.html#postgresql.installation.pg_config_dictionary">[docs]</a><span class="k">def</span> <span class="nf">pg_config_dictionary</span><span class="p">(</span><span class="o">*</span><span class="n">pg_config_path</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Create a dictionary of the information available in the given</span>
<span class="sd"> pg_config_path. This provides a one-shot solution to fetching information</span>
<span class="sd"> from the pg_config binary. Returns a dictionary object.</span>
<span class="sd"> """</span>
<span class="n">default_output</span> <span class="o">=</span> <span class="n">get_command_output</span><span class="p">(</span><span class="n">pg_config_path</span><span class="p">)</span>
<span class="k">if</span> <span class="n">default_output</span> <span class="ow">is</span> <span class="ow">not</span> <span class="bp">None</span><span class="p">:</span>
<span class="n">d</span> <span class="o">=</span> <span class="p">{}</span>
<span class="k">for</span> <span class="n">x</span> <span class="ow">in</span> <span class="n">default_output</span><span class="o">.</span><span class="n">splitlines</span><span class="p">():</span>
<span class="k">if</span> <span class="ow">not</span> <span class="n">x</span> <span class="ow">or</span> <span class="n">x</span><span class="o">.</span><span class="n">isspace</span><span class="p">()</span> <span class="ow">or</span> <span class="n">x</span><span class="o">.</span><span class="n">find</span><span class="p">(</span><span class="s">'='</span><span class="p">)</span> <span class="o">==</span> <span class="o">-</span><span class="mi">1</span><span class="p">:</span>
<span class="k">continue</span>
<span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="o">=</span> <span class="n">x</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s">'='</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span>
<span class="c"># keep it semi-consistent with instance</span>
<span class="n">d</span><span class="p">[</span><span class="n">k</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span><span class="o">.</span><span class="n">strip</span><span class="p">()]</span> <span class="o">=</span> <span class="n">v</span><span class="o">.</span><span class="n">strip</span><span class="p">()</span>
<span class="k">return</span> <span class="n">d</span>
<span class="c"># Support for 8.0 pg_config and earlier.</span>
<span class="c"># This requires three invocations of pg_config:</span>
<span class="c"># First --help, to get the -- options available,</span>
<span class="c"># Second, all the -- options except version.</span>
<span class="c"># Third, --version as it appears to be exclusive in some cases.</span>
<span class="n">opt</span> <span class="o">=</span> <span class="p">[]</span>
<span class="k">for</span> <span class="n">l</span> <span class="ow">in</span> <span class="n">get_command_output</span><span class="p">(</span><span class="n">pg_config_path</span><span class="p">,</span> <span class="s">'help'</span><span class="p">)</span><span class="o">.</span><span class="n">splitlines</span><span class="p">():</span>
<span class="n">dash_pos</span> <span class="o">=</span> <span class="n">l</span><span class="o">.</span><span class="n">find</span><span class="p">(</span><span class="s">'--'</span><span class="p">)</span>
<span class="k">if</span> <span class="n">dash_pos</span> <span class="o">==</span> <span class="o">-</span><span class="mi">1</span><span class="p">:</span>
<span class="k">continue</span>
<span class="n">sp_pos</span> <span class="o">=</span> <span class="n">l</span><span class="o">.</span><span class="n">find</span><span class="p">(</span><span class="s">' '</span><span class="p">,</span> <span class="n">dash_pos</span><span class="p">)</span>
<span class="c"># the dashes are added by the call command</span>
<span class="n">opt</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">l</span><span class="p">[</span><span class="n">dash_pos</span><span class="o">+</span><span class="mi">2</span><span class="p">:</span><span class="n">sp_pos</span><span class="p">])</span>
<span class="k">if</span> <span class="s">'help'</span> <span class="ow">in</span> <span class="n">opt</span><span class="p">:</span>
<span class="n">opt</span><span class="o">.</span><span class="n">remove</span><span class="p">(</span><span class="s">'help'</span><span class="p">)</span>
<span class="k">if</span> <span class="s">'version'</span> <span class="ow">in</span> <span class="n">opt</span><span class="p">:</span>
<span class="n">opt</span><span class="o">.</span><span class="n">remove</span><span class="p">(</span><span class="s">'version'</span><span class="p">)</span>
<span class="n">d</span><span class="o">=</span><span class="nb">dict</span><span class="p">(</span><span class="nb">zip</span><span class="p">(</span><span class="n">opt</span><span class="p">,</span> <span class="n">get_command_output</span><span class="p">(</span><span class="n">pg_config_path</span><span class="p">,</span> <span class="o">*</span><span class="n">opt</span><span class="p">)</span><span class="o">.</span><span class="n">splitlines</span><span class="p">()))</span>
<span class="n">d</span><span class="p">[</span><span class="s">'version'</span><span class="p">]</span> <span class="o">=</span> <span class="n">get_command_output</span><span class="p">(</span><span class="n">pg_config_path</span><span class="p">,</span> <span class="s">'version'</span><span class="p">)</span><span class="o">.</span><span class="n">strip</span><span class="p">()</span>
<span class="k">return</span> <span class="n">d</span></div>
<span class="c">##</span>
<span class="c"># Build a key-value pair list of the configure options.</span>
<span class="c"># If the item is quoted, mind the quotes.</span>
<span class="k">def</span> <span class="nf">parse_configure_options</span><span class="p">(</span><span class="n">confopt</span><span class="p">,</span> <span class="n">quotes</span> <span class="o">=</span> <span class="s">'</span><span class="se">\'</span><span class="s">"'</span><span class="p">,</span> <span class="n">dash_and_quotes</span> <span class="o">=</span> <span class="s">'-</span><span class="se">\'</span><span class="s">"'</span><span class="p">):</span>
<span class="c"># This is not a robust solution, but it will usually work.</span>
<span class="c"># Chances are that there is a quote at the beginning of this string.</span>
<span class="c"># However, in the windows pg_config.exe, this appears to be absent.</span>
<span class="k">if</span> <span class="n">confopt</span><span class="p">[</span><span class="mi">0</span><span class="p">:</span><span class="mi">1</span><span class="p">]</span> <span class="ow">in</span> <span class="n">quotes</span><span class="p">:</span>
<span class="c"># quote at the beginning. assume it's used consistently.</span>
<span class="n">quote</span> <span class="o">=</span> <span class="n">confopt</span><span class="p">[</span><span class="mi">0</span><span class="p">:</span><span class="mi">1</span><span class="p">]</span>
<span class="k">elif</span> <span class="n">confopt</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">:]</span> <span class="ow">in</span> <span class="n">quotes</span><span class="p">:</span>
<span class="c"># quote at the end?</span>
<span class="n">quote</span> <span class="o">=</span> <span class="n">confopt</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span>
<span class="k">else</span><span class="p">:</span>
<span class="c"># fallback to something. :(</span>
<span class="n">quote</span> <span class="o">=</span> <span class="s">"'"</span>
<span class="c">##</span>
<span class="c"># This is using the wrong kind of split, but the pg_config</span>
<span class="c"># output has been consistent enough for this to work.</span>
<span class="n">parts</span> <span class="o">=</span> <span class="n">pg_str</span><span class="o">.</span><span class="n">split_using</span><span class="p">(</span><span class="n">confopt</span><span class="p">,</span> <span class="n">quote</span><span class="p">,</span> <span class="n">sep</span> <span class="o">=</span> <span class="s">' '</span><span class="p">)</span>
<span class="n">qq</span> <span class="o">=</span> <span class="n">quote</span> <span class="o">*</span> <span class="mi">2</span>
<span class="k">for</span> <span class="n">x</span> <span class="ow">in</span> <span class="n">parts</span><span class="p">:</span>
<span class="k">if</span> <span class="n">qq</span> <span class="ow">in</span> <span class="n">x</span><span class="p">:</span>
<span class="c"># singularize the quotes</span>
<span class="n">x</span> <span class="o">=</span> <span class="n">x</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">qq</span><span class="p">,</span> <span class="n">quote</span><span class="p">)</span>
<span class="c"># remove the quotes around '--' from option.</span>
<span class="c"># if it splits once, the '1' index will</span>
<span class="c"># be `True`, indicating that the flag was given, but</span>
<span class="c"># was not given a value.</span>
<span class="n">kv</span> <span class="o">=</span> <span class="n">x</span><span class="o">.</span><span class="n">strip</span><span class="p">(</span><span class="n">dash_and_quotes</span><span class="p">)</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s">'='</span><span class="p">,</span> <span class="mi">1</span><span class="p">)</span> <span class="o">+</span> <span class="p">[</span><span class="bp">True</span><span class="p">]</span>
<span class="n">key</span> <span class="o">=</span> <span class="n">kv</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s">'-'</span><span class="p">,</span><span class="s">'_'</span><span class="p">)</span>
<span class="c"># Ignore empty keys.</span>
<span class="k">if</span> <span class="n">key</span><span class="p">:</span>
<span class="k">yield</span> <span class="p">(</span><span class="n">key</span><span class="p">,</span> <span class="n">kv</span><span class="p">[</span><span class="mi">1</span><span class="p">])</span>
<div class="viewcode-block" id="default_pg_config"><a class="viewcode-back" href="../../reference.html#postgresql.installation.default_pg_config">[docs]</a><span class="k">def</span> <span class="nf">default_pg_config</span><span class="p">(</span><span class="n">execname</span> <span class="o">=</span> <span class="s">'pg_config'</span><span class="p">,</span> <span class="n">envkey</span> <span class="o">=</span> <span class="s">'PGINSTALLATION'</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Get the default `pg_config` executable on the system.</span>
<span class="sd"> If 'PGINSTALLATION' is in the environment, use it.</span>
<span class="sd"> Otherwise, look through the system's PATH environment.</span>
<span class="sd"> """</span>
<span class="n">pg_config_path</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">envkey</span><span class="p">)</span>
<span class="k">if</span> <span class="n">pg_config_path</span><span class="p">:</span>
<span class="c"># Trust PGINSTALLATION.</span>
<span class="k">return</span> <span class="n">platform_exe</span><span class="p">(</span><span class="n">pg_config_path</span><span class="p">)</span>
<span class="k">return</span> <span class="n">find_executable</span><span class="p">(</span><span class="n">execname</span><span class="p">)</span></div>
<div class="viewcode-block" id="Installation"><a class="viewcode-back" href="../../reference.html#postgresql.installation.Installation">[docs]</a><span class="k">class</span> <span class="nc">Installation</span><span class="p">(</span><span class="n">pg_api</span><span class="o">.</span><span class="n">Installation</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Class providing a Python interface to PostgreSQL installation information.</span>
<span class="sd"> """</span>
<span class="n">version</span> <span class="o">=</span> <span class="bp">None</span>
<span class="n">version_info</span> <span class="o">=</span> <span class="bp">None</span>
<span class="nb">type</span> <span class="o">=</span> <span class="bp">None</span>
<span class="n">configure_options</span> <span class="o">=</span> <span class="bp">None</span>
<span class="c">#: The pg_config information dictionary.</span>
<span class="n">info</span> <span class="o">=</span> <span class="bp">None</span>
<span class="n">pg_executables</span> <span class="o">=</span> <span class="p">(</span>
<span class="s">'pg_config'</span><span class="p">,</span>
<span class="s">'psql'</span><span class="p">,</span>
<span class="s">'initdb'</span><span class="p">,</span>
<span class="s">'pg_resetxlog'</span><span class="p">,</span>
<span class="s">'pg_controldata'</span><span class="p">,</span>
<span class="s">'clusterdb'</span><span class="p">,</span>
<span class="s">'pg_ctl'</span><span class="p">,</span>
<span class="s">'pg_dump'</span><span class="p">,</span>
<span class="s">'pg_dumpall'</span><span class="p">,</span>
<span class="s">'postgres'</span><span class="p">,</span>
<span class="s">'postmaster'</span><span class="p">,</span>
<span class="s">'reindexdb'</span><span class="p">,</span>
<span class="s">'vacuumdb'</span><span class="p">,</span>
<span class="s">'ipcclean'</span><span class="p">,</span>
<span class="s">'createdb'</span><span class="p">,</span>
<span class="s">'ecpg'</span><span class="p">,</span>
<span class="s">'createuser'</span><span class="p">,</span>
<span class="s">'createlang'</span><span class="p">,</span>
<span class="s">'droplang'</span><span class="p">,</span>
<span class="s">'dropuser'</span><span class="p">,</span>
<span class="s">'pg_restore'</span><span class="p">,</span>
<span class="p">)</span>
<span class="n">pg_libraries</span> <span class="o">=</span> <span class="p">(</span>
<span class="s">'libpq'</span><span class="p">,</span>
<span class="s">'libecpg'</span><span class="p">,</span>
<span class="s">'libpgtypes'</span><span class="p">,</span>
<span class="s">'libecpg_compat'</span><span class="p">,</span>
<span class="p">)</span>
<span class="n">pg_directories</span> <span class="o">=</span> <span class="p">(</span>
<span class="s">'bindir'</span><span class="p">,</span>
<span class="s">'docdir'</span><span class="p">,</span>
<span class="s">'includedir'</span><span class="p">,</span>
<span class="s">'pkgincludedir'</span><span class="p">,</span>
<span class="s">'includedir_server'</span><span class="p">,</span>
<span class="s">'libdir'</span><span class="p">,</span>
<span class="s">'pkglibdir'</span><span class="p">,</span>
<span class="s">'localedir'</span><span class="p">,</span>
<span class="s">'mandir'</span><span class="p">,</span>
<span class="s">'sharedir'</span><span class="p">,</span>
<span class="s">'sysconfdir'</span><span class="p">,</span>
<span class="p">)</span>
<span class="k">def</span> <span class="nf">_e_metas</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="n">l</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">configure_options</span><span class="o">.</span><span class="n">items</span><span class="p">())</span>
<span class="n">l</span><span class="o">.</span><span class="n">sort</span><span class="p">(</span><span class="n">key</span> <span class="o">=</span> <span class="n">itemgetter</span><span class="p">(</span><span class="mi">0</span><span class="p">))</span>
<span class="k">yield</span> <span class="p">(</span><span class="s">'version'</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">version</span><span class="p">)</span>
<span class="k">if</span> <span class="n">l</span><span class="p">:</span>
<span class="k">yield</span> <span class="p">(</span><span class="s">'configure_options'</span><span class="p">,</span>
<span class="p">(</span><span class="n">os</span><span class="o">.</span><span class="n">linesep</span><span class="p">)</span><span class="o">.</span><span class="n">join</span><span class="p">((</span>
<span class="n">k</span> <span class="k">if</span> <span class="n">v</span> <span class="ow">is</span> <span class="bp">True</span> <span class="k">else</span> <span class="n">k</span> <span class="o">+</span> <span class="s">'='</span> <span class="o">+</span> <span class="n">v</span>
<span class="k">for</span> <span class="n">k</span><span class="p">,</span><span class="n">v</span> <span class="ow">in</span> <span class="n">l</span>
<span class="p">))</span>
<span class="p">)</span>
<span class="k">def</span> <span class="nf">__repr__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">format</span> <span class="o">=</span> <span class="s">"{mod}.{name}({info!r})"</span><span class="o">.</span><span class="n">format</span><span class="p">):</span>
<span class="k">return</span> <span class="n">format</span><span class="p">(</span>
<span class="n">mod</span> <span class="o">=</span> <span class="nb">type</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">__module__</span><span class="p">,</span>
<span class="n">name</span> <span class="o">=</span> <span class="nb">type</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span><span class="o">.</span><span class="n">__name__</span><span class="p">,</span>
<span class="n">info</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">info</span>
<span class="p">)</span>
<span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">info</span> <span class="p">:</span> <span class="nb">dict</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Initialize the Installation using the given information dictionary.</span>
<span class="sd"> """</span>
<span class="bp">self</span><span class="o">.</span><span class="n">info</span> <span class="o">=</span> <span class="n">info</span>
<span class="bp">self</span><span class="o">.</span><span class="n">version</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">info</span><span class="p">[</span><span class="s">"version"</span><span class="p">]</span>
<span class="bp">self</span><span class="o">.</span><span class="n">type</span><span class="p">,</span> <span class="n">vs</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">version</span><span class="o">.</span><span class="n">split</span><span class="p">()</span>
<span class="bp">self</span><span class="o">.</span><span class="n">version_info</span> <span class="o">=</span> <span class="n">versionstring</span><span class="o">.</span><span class="n">normalize</span><span class="p">(</span><span class="n">versionstring</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="n">vs</span><span class="p">))</span>
<span class="bp">self</span><span class="o">.</span><span class="n">configure_options</span> <span class="o">=</span> <span class="nb">dict</span><span class="p">(</span>
<span class="n">parse_configure_options</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">info</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">'configure'</span><span class="p">,</span> <span class="s">''</span><span class="p">))</span>
<span class="p">)</span>
<span class="c"># collect the paths in a dictionary first</span>
<span class="bp">self</span><span class="o">.</span><span class="n">paths</span> <span class="o">=</span> <span class="nb">dict</span><span class="p">()</span>
<span class="n">exists</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">exists</span>
<span class="n">join</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span>
<span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">pg_directories</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">paths</span><span class="p">[</span><span class="n">k</span><span class="p">]</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">info</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">k</span><span class="p">)</span>
<span class="c"># find all the PG executables that exist for the installation.</span>
<span class="n">bindir_path</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">info</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s">'bindir'</span><span class="p">)</span>
<span class="k">if</span> <span class="n">bindir_path</span> <span class="ow">is</span> <span class="bp">None</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">paths</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="nb">zip</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">pg_executables</span><span class="p">,</span> <span class="n">cycle</span><span class="p">((</span><span class="bp">None</span><span class="p">,))))</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">pg_executables</span><span class="p">:</span>
<span class="n">path</span> <span class="o">=</span> <span class="n">platform_exe</span><span class="p">(</span><span class="n">join</span><span class="p">(</span><span class="n">bindir_path</span><span class="p">,</span> <span class="n">k</span><span class="p">))</span>
<span class="k">if</span> <span class="n">exists</span><span class="p">(</span><span class="n">path</span><span class="p">):</span>
<span class="bp">self</span><span class="o">.</span><span class="n">paths</span><span class="p">[</span><span class="n">k</span><span class="p">]</span> <span class="o">=</span> <span class="n">path</span>
<span class="k">else</span><span class="p">:</span>
<span class="bp">self</span><span class="o">.</span><span class="n">paths</span><span class="p">[</span><span class="n">k</span><span class="p">]</span> <span class="o">=</span> <span class="bp">None</span>
<span class="bp">self</span><span class="o">.</span><span class="n">__dict__</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">paths</span><span class="p">)</span>
<span class="nd">@property</span>
<span class="k">def</span> <span class="nf">ssl</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Whether the installation was compiled with SSL support.</span>
<span class="sd"> """</span>
<span class="k">return</span> <span class="s">'with_openssl'</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">configure_options</span></div>
<div class="viewcode-block" id="default"><a class="viewcode-back" href="../../reference.html#postgresql.installation.default">[docs]</a><span class="k">def</span> <span class="nf">default</span><span class="p">(</span><span class="n">typ</span> <span class="o">=</span> <span class="n">Installation</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Get the default Installation.</span>
<span class="sd"> Uses default_pg_config() to identify the executable.</span>
<span class="sd"> """</span>
<span class="n">path</span> <span class="o">=</span> <span class="n">default_pg_config</span><span class="p">()</span>
<span class="k">if</span> <span class="n">path</span> <span class="ow">is</span> <span class="bp">None</span><span class="p">:</span>
<span class="k">return</span> <span class="bp">None</span>
<span class="k">return</span> <span class="n">typ</span><span class="p">(</span><span class="n">pg_config_dictionary</span><span class="p">(</span><span class="n">path</span><span class="p">))</span></div>
<span class="k">if</span> <span class="n">__name__</span> <span class="o">==</span> <span class="s">'__main__'</span><span class="p">:</span>
<span class="k">if</span> <span class="n">sys</span><span class="o">.</span><span class="n">argv</span><span class="p">[</span><span class="mi">1</span><span class="p">:]:</span>
<span class="n">d</span> <span class="o">=</span> <span class="n">pg_config_dictionary</span><span class="p">(</span><span class="n">sys</span><span class="o">.</span><span class="n">argv</span><span class="p">[</span><span class="mi">1</span><span class="p">])</span>
<span class="n">i</span> <span class="o">=</span> <span class="n">Installation</span><span class="p">(</span><span class="n">d</span><span class="p">)</span>
<span class="k">else</span><span class="p">:</span>
<span class="n">i</span> <span class="o">=</span> <span class="n">default</span><span class="p">()</span>
<span class="kn">from</span> <span class="nn">.python.element</span> <span class="kn">import</span> <span class="n">format_element</span>
<span class="k">print</span><span class="p">(</span><span class="n">format_element</span><span class="p">(</span><span class="n">i</span><span class="p">))</span>
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