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<h1><a href="../../../../../index.html">Django 1.8.19 documentation</a></h1>
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<h1>Source code for django.contrib.gis.gdal.geomtype</h1><div class="highlight"><pre>
<span></span><span class="kn">from</span> <span class="nn">django.contrib.gis.gdal.error</span> <span class="k">import</span> <span class="n">GDALException</span>
<span class="kn">from</span> <span class="nn">django.utils</span> <span class="k">import</span> <span class="n">six</span>
<div class="viewcode-block" id="OGRGeomType"><a class="viewcode-back" href="../../../../../ref/contrib/gis/gdal.html#django.contrib.gis.gdal.OGRGeomType">[docs]</a><span class="k">class</span> <span class="nc">OGRGeomType</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span>
<span class="s2">"Encapsulates OGR Geometry Types."</span>
<span class="n">wkb25bit</span> <span class="o">=</span> <span class="o">-</span><span class="mi">2147483648</span>
<span class="c1"># Dictionary of acceptable OGRwkbGeometryType s and their string names.</span>
<span class="n">_types</span> <span class="o">=</span> <span class="p">{</span><span class="mi">0</span><span class="p">:</span> <span class="s1">'Unknown'</span><span class="p">,</span>
<span class="mi">1</span><span class="p">:</span> <span class="s1">'Point'</span><span class="p">,</span>
<span class="mi">2</span><span class="p">:</span> <span class="s1">'LineString'</span><span class="p">,</span>
<span class="mi">3</span><span class="p">:</span> <span class="s1">'Polygon'</span><span class="p">,</span>
<span class="mi">4</span><span class="p">:</span> <span class="s1">'MultiPoint'</span><span class="p">,</span>
<span class="mi">5</span><span class="p">:</span> <span class="s1">'MultiLineString'</span><span class="p">,</span>
<span class="mi">6</span><span class="p">:</span> <span class="s1">'MultiPolygon'</span><span class="p">,</span>
<span class="mi">7</span><span class="p">:</span> <span class="s1">'GeometryCollection'</span><span class="p">,</span>
<span class="mi">100</span><span class="p">:</span> <span class="s1">'None'</span><span class="p">,</span>
<span class="mi">101</span><span class="p">:</span> <span class="s1">'LinearRing'</span><span class="p">,</span>
<span class="mi">1</span> <span class="o">+</span> <span class="n">wkb25bit</span><span class="p">:</span> <span class="s1">'Point25D'</span><span class="p">,</span>
<span class="mi">2</span> <span class="o">+</span> <span class="n">wkb25bit</span><span class="p">:</span> <span class="s1">'LineString25D'</span><span class="p">,</span>
<span class="mi">3</span> <span class="o">+</span> <span class="n">wkb25bit</span><span class="p">:</span> <span class="s1">'Polygon25D'</span><span class="p">,</span>
<span class="mi">4</span> <span class="o">+</span> <span class="n">wkb25bit</span><span class="p">:</span> <span class="s1">'MultiPoint25D'</span><span class="p">,</span>
<span class="mi">5</span> <span class="o">+</span> <span class="n">wkb25bit</span><span class="p">:</span> <span class="s1">'MultiLineString25D'</span><span class="p">,</span>
<span class="mi">6</span> <span class="o">+</span> <span class="n">wkb25bit</span><span class="p">:</span> <span class="s1">'MultiPolygon25D'</span><span class="p">,</span>
<span class="mi">7</span> <span class="o">+</span> <span class="n">wkb25bit</span><span class="p">:</span> <span class="s1">'GeometryCollection25D'</span><span class="p">,</span>
<span class="p">}</span>
<span class="c1"># Reverse type dictionary, keyed by lower-case of the name.</span>
<span class="n">_str_types</span> <span class="o">=</span> <span class="p">{</span><span class="n">v</span><span class="o">.</span><span class="n">lower</span><span class="p">():</span> <span class="n">k</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">_types</span><span class="o">.</span><span class="n">items</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">type_input</span><span class="p">):</span>
<span class="s2">"Figures out the correct OGR Type based upon the input."</span>
<span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">type_input</span><span class="p">,</span> <span class="n">OGRGeomType</span><span class="p">):</span>
<span class="n">num</span> <span class="o">=</span> <span class="n">type_input</span><span class="o">.</span><span class="n">num</span>
<span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">type_input</span><span class="p">,</span> <span class="n">six</span><span class="o">.</span><span class="n">string_types</span><span class="p">):</span>
<span class="n">type_input</span> <span class="o">=</span> <span class="n">type_input</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span>
<span class="k">if</span> <span class="n">type_input</span> <span class="o">==</span> <span class="s1">'geometry'</span><span class="p">:</span>
<span class="n">type_input</span> <span class="o">=</span> <span class="s1">'unknown'</span>
<span class="n">num</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_str_types</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">type_input</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span>
<span class="k">if</span> <span class="n">num</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span>
<span class="k">raise</span> <span class="n">GDALException</span><span class="p">(</span><span class="s1">'Invalid OGR String Type "</span><span class="si">%s</span><span class="s1">"'</span> <span class="o">%</span> <span class="n">type_input</span><span class="p">)</span>
<span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">type_input</span><span class="p">,</span> <span class="nb">int</span><span class="p">):</span>
<span class="k">if</span> <span class="n">type_input</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_types</span><span class="p">:</span>
<span class="k">raise</span> <span class="n">GDALException</span><span class="p">(</span><span class="s1">'Invalid OGR Integer Type: </span><span class="si">%d</span><span class="s1">'</span> <span class="o">%</span> <span class="n">type_input</span><span class="p">)</span>
<span class="n">num</span> <span class="o">=</span> <span class="n">type_input</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">TypeError</span><span class="p">(</span><span class="s1">'Invalid OGR input type given.'</span><span class="p">)</span>
<span class="c1"># Setting the OGR geometry type number.</span>
<span class="bp">self</span><span class="o">.</span><span class="n">num</span> <span class="o">=</span> <span class="n">num</span>
<span class="k">def</span> <span class="nf">__str__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="s2">"Returns the value of the name property."</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">name</span>
<span class="k">def</span> <span class="nf">__eq__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">other</span><span class="p">):</span>
<span class="sd">"""</span>
<span class="sd"> Does an equivalence test on the OGR type with the given</span>
<span class="sd"> other OGRGeomType, the short-hand string, or the integer.</span>
<span class="sd"> """</span>
<span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">other</span><span class="p">,</span> <span class="n">OGRGeomType</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">num</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">num</span>
<span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">other</span><span class="p">,</span> <span class="n">six</span><span class="o">.</span><span class="n">string_types</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">name</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span> <span class="o">==</span> <span class="n">other</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span>
<span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">other</span><span class="p">,</span> <span class="nb">int</span><span class="p">):</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">num</span> <span class="o">==</span> <span class="n">other</span>
<span class="k">else</span><span class="p">:</span>
<span class="k">return</span> <span class="kc">False</span>
<span class="k">def</span> <span class="nf">__ne__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">other</span><span class="p">):</span>
<span class="k">return</span> <span class="ow">not</span> <span class="p">(</span><span class="bp">self</span> <span class="o">==</span> <span class="n">other</span><span class="p">)</span>
<span class="nd">@property</span>
<span class="k">def</span> <span class="nf">name</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="s2">"Returns a short-hand string form of the OGR Geometry type."</span>
<span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_types</span><span class="p">[</span><span class="bp">self</span><span class="o">.</span><span class="n">num</span><span class="p">]</span>
<span class="nd">@property</span>
<span class="k">def</span> <span class="nf">django</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="s2">"Returns the Django GeometryField for this OGR Type."</span>
<span class="n">s</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">name</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="s1">'25D'</span><span class="p">,</span> <span class="s1">''</span><span class="p">)</span>
<span class="k">if</span> <span class="n">s</span> <span class="ow">in</span> <span class="p">(</span><span class="s1">'LinearRing'</span><span class="p">,</span> <span class="s1">'None'</span><span class="p">):</span>
<span class="k">return</span> <span class="kc">None</span>
<span class="k">elif</span> <span class="n">s</span> <span class="o">==</span> <span class="s1">'Unknown'</span><span class="p">:</span>
<span class="n">s</span> <span class="o">=</span> <span class="s1">'Geometry'</span>
<span class="k">return</span> <span class="n">s</span> <span class="o">+</span> <span class="s1">'Field'</span></div>
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