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<title>src/Hakyll/Core/Provider.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>--------------------------------------------------------------------------------</span>
<a name="line-2"></a><span class='hs-comment'>-- | This module provides an wrapper API around the file system which does some</span>
<a name="line-3"></a><span class='hs-comment'>-- caching.</span>
<a name="line-4"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Hakyll</span><span class='hs-varop'>.</span><span class='hs-conid'>Core</span><span class='hs-varop'>.</span><span class='hs-conid'>Provider</span>
<a name="line-5"></a> <span class='hs-layout'>(</span> <span class='hs-comment'>-- * Constructing resource providers</span>
<a name="line-6"></a> <span class='hs-conid'>Internal</span><span class='hs-varop'>.</span><span class='hs-conid'>Provider</span>
<a name="line-7"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>newProvider</span>
<a name="line-8"></a>
<a name="line-9"></a> <span class='hs-comment'>-- * Querying resource properties</span>
<a name="line-10"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>Internal</span><span class='hs-varop'>.</span><span class='hs-varid'>resourceList</span>
<a name="line-11"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>Internal</span><span class='hs-varop'>.</span><span class='hs-varid'>resourceExists</span>
<a name="line-12"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>Internal</span><span class='hs-varop'>.</span><span class='hs-varid'>resourceFilePath</span>
<a name="line-13"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>Internal</span><span class='hs-varop'>.</span><span class='hs-varid'>resourceModified</span>
<a name="line-14"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>Internal</span><span class='hs-varop'>.</span><span class='hs-varid'>resourceModificationTime</span>
<a name="line-15"></a>
<a name="line-16"></a> <span class='hs-comment'>-- * Access to raw resource content</span>
<a name="line-17"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>Internal</span><span class='hs-varop'>.</span><span class='hs-varid'>resourceString</span>
<a name="line-18"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>Internal</span><span class='hs-varop'>.</span><span class='hs-varid'>resourceLBS</span>
<a name="line-19"></a>
<a name="line-20"></a> <span class='hs-comment'>-- * Access to metadata and body content</span>
<a name="line-21"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>Internal</span><span class='hs-varop'>.</span><span class='hs-varid'>resourceMetadata</span>
<a name="line-22"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>Internal</span><span class='hs-varop'>.</span><span class='hs-varid'>resourceBody</span>
<a name="line-23"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-24"></a>
<a name="line-25"></a>
<a name="line-26"></a><span class='hs-comment'>--------------------------------------------------------------------------------</span>
<a name="line-27"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Hakyll</span><span class='hs-varop'>.</span><span class='hs-conid'>Core</span><span class='hs-varop'>.</span><span class='hs-conid'>Provider</span><span class='hs-varop'>.</span><span class='hs-conid'>Internal</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>Internal</span>
<a name="line-28"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Hakyll</span><span class='hs-varop'>.</span><span class='hs-conid'>Core</span><span class='hs-varop'>.</span><span class='hs-conid'>Provider</span><span class='hs-varop'>.</span><span class='hs-conid'>MetadataCache</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>Internal</span>
<a name="line-29"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Hakyll</span><span class='hs-varop'>.</span><span class='hs-conid'>Core</span><span class='hs-varop'>.</span><span class='hs-conid'>Store</span> <span class='hs-layout'>(</span><span class='hs-conid'>Store</span><span class='hs-layout'>)</span>
<a name="line-30"></a>
<a name="line-31"></a>
<a name="line-32"></a><a name="newProvider"></a><span class='hs-comment'>--------------------------------------------------------------------------------</span>
<a name="line-33"></a><span class='hs-comment'>-- | Create a resource provider</span>
<a name="line-34"></a><span class='hs-definition'>newProvider</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Store</span> <span class='hs-comment'>-- ^ Store to use</span>
<a name="line-35"></a> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>FilePath</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- ^ Should we ignore this file?</span>
<a name="line-36"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FilePath</span> <span class='hs-comment'>-- ^ Search directory</span>
<a name="line-37"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-conid'>Internal</span><span class='hs-varop'>.</span><span class='hs-conid'>Provider</span> <span class='hs-comment'>-- ^ Resulting provider</span>
<a name="line-38"></a><span class='hs-definition'>newProvider</span> <span class='hs-varid'>store</span> <span class='hs-varid'>ignore</span> <span class='hs-varid'>directory</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-39"></a> <span class='hs-comment'>-- Delete metadata cache where necessary</span>
<a name="line-40"></a> <span class='hs-varid'>p</span> <span class='hs-keyglyph'><-</span> <span class='hs-conid'>Internal</span><span class='hs-varop'>.</span><span class='hs-varid'>newProvider</span> <span class='hs-varid'>store</span> <span class='hs-varid'>ignore</span> <span class='hs-varid'>directory</span>
<a name="line-41"></a> <span class='hs-varid'>mapM_</span> <span class='hs-layout'>(</span><span class='hs-conid'>Internal</span><span class='hs-varop'>.</span><span class='hs-varid'>resourceInvalidateMetadataCache</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span>
<a name="line-42"></a> <span class='hs-varid'>filter</span> <span class='hs-layout'>(</span><span class='hs-conid'>Internal</span><span class='hs-varop'>.</span><span class='hs-varid'>resourceModified</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-conid'>Internal</span><span class='hs-varop'>.</span><span class='hs-varid'>resourceList</span> <span class='hs-varid'>p</span>
<a name="line-43"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>p</span>
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