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<pre><a name="line-1"></a><span class='hs-comment'>-- | Combinators to match tags. Some people prefer to use @(~==)@ from</span>
<a name="line-2"></a><span class='hs-comment'>-- "Text.HTML.TagSoup", others prefer these more structured combinators.</span>
<a name="line-3"></a><span class='hs-comment'>-- Which you use is personal preference.</span>
<a name="line-4"></a>
<a name="line-5"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>HTML</span><span class='hs-varop'>.</span><span class='hs-conid'>TagSoup</span><span class='hs-varop'>.</span><span class='hs-conid'>Match</span> <span class='hs-keyword'>where</span>
<a name="line-6"></a>
<a name="line-7"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>HTML</span><span class='hs-varop'>.</span><span class='hs-conid'>TagSoup</span><span class='hs-varop'>.</span><span class='hs-conid'>Type</span> <span class='hs-layout'>(</span><span class='hs-conid'>Tag</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>Attribute</span><span class='hs-layout'>)</span>
<a name="line-8"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span>
<a name="line-9"></a>
<a name="line-10"></a>
<a name="line-11"></a><a name="tagOpen"></a><span class='hs-comment'>-- | match an opening tag</span>
<a name="line-12"></a><span class='hs-definition'>tagOpen</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>str</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-conid'>Attribute</span> <span class='hs-varid'>str</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Tag</span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-13"></a><span class='hs-definition'>tagOpen</span> <span class='hs-varid'>pName</span> <span class='hs-varid'>pAttrs</span> <span class='hs-layout'>(</span><span class='hs-conid'>TagOpen</span> <span class='hs-varid'>name</span> <span class='hs-varid'>attrs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-14"></a> <span class='hs-varid'>pName</span> <span class='hs-varid'>name</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>pAttrs</span> <span class='hs-varid'>attrs</span>
<a name="line-15"></a><span class='hs-definition'>tagOpen</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span>
<a name="line-16"></a>
<a name="line-17"></a><a name="tagClose"></a><span class='hs-comment'>-- | match an closing tag</span>
<a name="line-18"></a><span class='hs-definition'>tagClose</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>str</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Tag</span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-19"></a><span class='hs-definition'>tagClose</span> <span class='hs-varid'>pName</span> <span class='hs-layout'>(</span><span class='hs-conid'>TagClose</span> <span class='hs-varid'>name</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>pName</span> <span class='hs-varid'>name</span>
<a name="line-20"></a><span class='hs-definition'>tagClose</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span>
<a name="line-21"></a>
<a name="line-22"></a><a name="tagText"></a><span class='hs-comment'>-- | match a text</span>
<a name="line-23"></a><span class='hs-definition'>tagText</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>str</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Tag</span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-24"></a><span class='hs-definition'>tagText</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-conid'>TagText</span> <span class='hs-varid'>text</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>p</span> <span class='hs-varid'>text</span>
<a name="line-25"></a><span class='hs-definition'>tagText</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span>
<a name="line-26"></a>
<a name="line-27"></a><a name="tagComment"></a><span class='hs-definition'>tagComment</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>str</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Tag</span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-28"></a><span class='hs-definition'>tagComment</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-conid'>TagComment</span> <span class='hs-varid'>text</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>p</span> <span class='hs-varid'>text</span>
<a name="line-29"></a><span class='hs-definition'>tagComment</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span>
<a name="line-30"></a>
<a name="line-31"></a>
<a name="line-32"></a><a name="tagOpenLit"></a><span class='hs-comment'>-- | match a opening tag's name literally</span>
<a name="line-33"></a><span class='hs-definition'>tagOpenLit</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-conid'>Attribute</span> <span class='hs-varid'>str</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Tag</span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-34"></a><span class='hs-definition'>tagOpenLit</span> <span class='hs-varid'>name</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>tagOpen</span> <span class='hs-layout'>(</span><span class='hs-varid'>name</span><span class='hs-varop'>==</span><span class='hs-layout'>)</span>
<a name="line-35"></a>
<a name="line-36"></a><a name="tagCloseLit"></a><span class='hs-comment'>-- | match a closing tag's name literally</span>
<a name="line-37"></a><span class='hs-definition'>tagCloseLit</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Tag</span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-38"></a><span class='hs-definition'>tagCloseLit</span> <span class='hs-varid'>name</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>tagClose</span> <span class='hs-layout'>(</span><span class='hs-varid'>name</span><span class='hs-varop'>==</span><span class='hs-layout'>)</span>
<a name="line-39"></a>
<a name="line-40"></a><a name="tagOpenAttrLit"></a><span class='hs-definition'>tagOpenAttrLit</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Attribute</span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Tag</span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-41"></a><span class='hs-definition'>tagOpenAttrLit</span> <span class='hs-varid'>name</span> <span class='hs-varid'>attr</span> <span class='hs-keyglyph'>=</span>
<a name="line-42"></a> <span class='hs-varid'>tagOpenLit</span> <span class='hs-varid'>name</span> <span class='hs-layout'>(</span><span class='hs-varid'>anyAttrLit</span> <span class='hs-varid'>attr</span><span class='hs-layout'>)</span>
<a name="line-43"></a>
<a name="line-44"></a><a name="tagOpenAttrNameLit"></a><span class='hs-comment'>{- |
<a name="line-45"></a>Match a tag with given name, that contains an attribute
<a name="line-46"></a>with given name, that satisfies a predicate.
<a name="line-47"></a>If an attribute occurs multiple times,
<a name="line-48"></a>all occurrences are checked.
<a name="line-49"></a>-}</span>
<a name="line-50"></a><span class='hs-definition'>tagOpenAttrNameLit</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-varid'>str</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Tag</span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-51"></a><span class='hs-definition'>tagOpenAttrNameLit</span> <span class='hs-varid'>tagName</span> <span class='hs-varid'>attrName</span> <span class='hs-varid'>pAttrValue</span> <span class='hs-keyglyph'>=</span>
<a name="line-52"></a> <span class='hs-varid'>tagOpenLit</span> <span class='hs-varid'>tagName</span>
<a name="line-53"></a> <span class='hs-layout'>(</span><span class='hs-varid'>anyAttr</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-layout'>(</span><span class='hs-varid'>name</span><span class='hs-layout'>,</span><span class='hs-varid'>value</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>name</span><span class='hs-varop'>==</span><span class='hs-varid'>attrName</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>pAttrValue</span> <span class='hs-varid'>value</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-54"></a>
<a name="line-55"></a>
<a name="line-56"></a><a name="tagOpenNameLit"></a><span class='hs-comment'>-- | Check if the 'Tag str' is 'TagOpen' and matches the given name</span>
<a name="line-57"></a><span class='hs-definition'>tagOpenNameLit</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Tag</span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-58"></a><span class='hs-definition'>tagOpenNameLit</span> <span class='hs-varid'>name</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>tagOpenLit</span> <span class='hs-varid'>name</span> <span class='hs-layout'>(</span><span class='hs-varid'>const</span> <span class='hs-conid'>True</span><span class='hs-layout'>)</span>
<a name="line-59"></a>
<a name="line-60"></a><a name="tagCloseNameLit"></a><span class='hs-comment'>-- | Check if the 'Tag str' is 'TagClose' and matches the given name</span>
<a name="line-61"></a><span class='hs-definition'>tagCloseNameLit</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Tag</span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-62"></a><span class='hs-definition'>tagCloseNameLit</span> <span class='hs-varid'>name</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>tagCloseLit</span> <span class='hs-varid'>name</span>
<a name="line-63"></a>
<a name="line-64"></a>
<a name="line-65"></a>
<a name="line-66"></a>
<a name="line-67"></a><a name="anyAttr"></a><span class='hs-definition'>anyAttr</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>str</span><span class='hs-layout'>,</span><span class='hs-varid'>str</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Attribute</span> <span class='hs-varid'>str</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-68"></a><span class='hs-definition'>anyAttr</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>any</span>
<a name="line-69"></a>
<a name="line-70"></a><a name="anyAttrName"></a><span class='hs-definition'>anyAttrName</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>str</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Attribute</span> <span class='hs-varid'>str</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-71"></a><span class='hs-definition'>anyAttrName</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>any</span> <span class='hs-layout'>(</span><span class='hs-varid'>p</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fst</span><span class='hs-layout'>)</span>
<a name="line-72"></a>
<a name="line-73"></a><a name="anyAttrValue"></a><span class='hs-definition'>anyAttrValue</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>str</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Attribute</span> <span class='hs-varid'>str</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-74"></a><span class='hs-definition'>anyAttrValue</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>any</span> <span class='hs-layout'>(</span><span class='hs-varid'>p</span> <span class='hs-varop'>.</span> <span class='hs-varid'>snd</span><span class='hs-layout'>)</span>
<a name="line-75"></a>
<a name="line-76"></a>
<a name="line-77"></a><a name="anyAttrLit"></a><span class='hs-definition'>anyAttrLit</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>=></span> <span class='hs-layout'>(</span><span class='hs-varid'>str</span><span class='hs-layout'>,</span><span class='hs-varid'>str</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Attribute</span> <span class='hs-varid'>str</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-78"></a><span class='hs-definition'>anyAttrLit</span> <span class='hs-varid'>attr</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>anyAttr</span> <span class='hs-layout'>(</span><span class='hs-varid'>attr</span><span class='hs-varop'>==</span><span class='hs-layout'>)</span>
<a name="line-79"></a>
<a name="line-80"></a><a name="anyAttrNameLit"></a><span class='hs-definition'>anyAttrNameLit</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Attribute</span> <span class='hs-varid'>str</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-81"></a><span class='hs-definition'>anyAttrNameLit</span> <span class='hs-varid'>name</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>anyAttrName</span> <span class='hs-layout'>(</span><span class='hs-varid'>name</span><span class='hs-varop'>==</span><span class='hs-layout'>)</span>
<a name="line-82"></a>
<a name="line-83"></a><a name="anyAttrValueLit"></a><span class='hs-definition'>anyAttrValueLit</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Attribute</span> <span class='hs-varid'>str</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-84"></a><span class='hs-definition'>anyAttrValueLit</span> <span class='hs-varid'>value</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>anyAttrValue</span> <span class='hs-layout'>(</span><span class='hs-varid'>value</span><span class='hs-varop'>==</span><span class='hs-layout'>)</span>
<a name="line-85"></a>
<a name="line-86"></a>
<a name="line-87"></a>
<a name="line-88"></a><a name="getTagContent"></a><span class='hs-definition'>getTagContent</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>=></span> <span class='hs-varid'>str</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>[</span><span class='hs-conid'>Attribute</span> <span class='hs-varid'>str</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Tag</span> <span class='hs-varid'>str</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Tag</span> <span class='hs-varid'>str</span><span class='hs-keyglyph'>]</span>
<a name="line-89"></a><span class='hs-definition'>getTagContent</span> <span class='hs-varid'>name</span> <span class='hs-varid'>pAttrs</span> <span class='hs-keyglyph'>=</span>
<a name="line-90"></a> <span class='hs-varid'>takeWhile</span> <span class='hs-layout'>(</span><span class='hs-varid'>not</span> <span class='hs-varop'>.</span> <span class='hs-varid'>tagCloseLit</span> <span class='hs-varid'>name</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>drop</span> <span class='hs-num'>1</span> <span class='hs-varop'>.</span>
<a name="line-91"></a> <span class='hs-varid'>head</span> <span class='hs-varop'>.</span> <span class='hs-varid'>sections</span> <span class='hs-layout'>(</span><span class='hs-varid'>tagOpenLit</span> <span class='hs-varid'>name</span> <span class='hs-varid'>pAttrs</span><span class='hs-layout'>)</span>
<a name="line-92"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>sections</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>filter</span> <span class='hs-layout'>(</span><span class='hs-varid'>p</span> <span class='hs-varop'>.</span> <span class='hs-varid'>head</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>init</span> <span class='hs-varop'>.</span> <span class='hs-varid'>tails</span>
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