hxt-8.0.0: doc/hdoc/src/Text-XML-HXT-RelaxNG-Utils.html
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<pre><a name="line-1"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-2"></a>
<a name="line-3"></a><span class='comment'>{- |
<a name="line-4"></a> Module : Text.XML.HXT.RelaxNG.Utils
<a name="line-5"></a> Copyright : Copyright (C) 2008 Uwe Schmidt
<a name="line-6"></a> License : MIT
<a name="line-7"></a>
<a name="line-8"></a> Maintainer : Uwe Schmidt (uwe@fh-wedel.de)
<a name="line-9"></a> Stability : stable
<a name="line-10"></a> Portability: portable
<a name="line-11"></a>
<a name="line-12"></a> Helper functions for RelaxNG validation
<a name="line-13"></a>
<a name="line-14"></a>-}</span>
<a name="line-15"></a>
<a name="line-16"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-17"></a>
<a name="line-18"></a><span class='keyword'>module</span> <span class='conid'>Text</span><span class='varop'>.</span><span class='conid'>XML</span><span class='varop'>.</span><span class='conid'>HXT</span><span class='varop'>.</span><span class='conid'>RelaxNG</span><span class='varop'>.</span><span class='conid'>Utils</span>
<a name="line-19"></a> <span class='layout'>(</span> <span class='varid'>isRelaxAnyURI</span>
<a name="line-20"></a> <span class='layout'>,</span> <span class='varid'>compareURI</span>
<a name="line-21"></a> <span class='layout'>,</span> <span class='varid'>normalizeURI</span>
<a name="line-22"></a> <span class='layout'>,</span> <span class='varid'>isNumber</span>
<a name="line-23"></a> <span class='layout'>,</span> <span class='varid'>isNmtoken</span>
<a name="line-24"></a> <span class='layout'>,</span> <span class='varid'>isName</span>
<a name="line-25"></a> <span class='layout'>,</span> <span class='varid'>formatStringList</span>
<a name="line-26"></a> <span class='layout'>,</span> <span class='varid'>formatStringListPatt</span>
<a name="line-27"></a> <span class='layout'>,</span> <span class='varid'>formatStringListId</span>
<a name="line-28"></a> <span class='layout'>,</span> <span class='varid'>formatStringListQuot</span>
<a name="line-29"></a> <span class='layout'>,</span> <span class='varid'>formatStringListPairs</span>
<a name="line-30"></a> <span class='layout'>,</span> <span class='varid'>formatStringListArr</span>
<a name="line-31"></a> <span class='layout'>)</span>
<a name="line-32"></a><span class='keyword'>where</span>
<a name="line-33"></a>
<a name="line-34"></a><span class='keyword'>import</span> <span class='conid'>Text</span><span class='varop'>.</span><span class='conid'>ParserCombinators</span><span class='varop'>.</span><span class='conid'>Parsec</span>
<a name="line-35"></a>
<a name="line-36"></a><span class='keyword'>import</span> <span class='conid'>Text</span><span class='varop'>.</span><span class='conid'>XML</span><span class='varop'>.</span><span class='conid'>HXT</span><span class='varop'>.</span><span class='conid'>Parser</span><span class='varop'>.</span><span class='conid'>XmlTokenParser</span>
<a name="line-37"></a> <span class='layout'>(</span> <span class='varid'>skipS0</span>
<a name="line-38"></a> <span class='layout'>,</span> <span class='varid'>nmtoken</span>
<a name="line-39"></a> <span class='layout'>,</span> <span class='varid'>name</span>
<a name="line-40"></a> <span class='layout'>)</span>
<a name="line-41"></a>
<a name="line-42"></a><span class='keyword'>import</span> <span class='conid'>Network</span><span class='varop'>.</span><span class='conid'>URI</span>
<a name="line-43"></a> <span class='layout'>(</span> <span class='varid'>isURI</span>
<a name="line-44"></a> <span class='layout'>,</span> <span class='varid'>isRelativeReference</span>
<a name="line-45"></a> <span class='layout'>,</span> <span class='varid'>parseURI</span>
<a name="line-46"></a> <span class='layout'>,</span> <span class='conid'>URI</span><span class='layout'>(</span><span class='keyglyph'>..</span><span class='layout'>)</span>
<a name="line-47"></a> <span class='layout'>)</span>
<a name="line-48"></a>
<a name="line-49"></a><span class='keyword'>import</span> <span class='conid'>Data</span><span class='varop'>.</span><span class='conid'>Maybe</span>
<a name="line-50"></a> <span class='layout'>(</span> <span class='varid'>fromMaybe</span>
<a name="line-51"></a> <span class='layout'>)</span>
<a name="line-52"></a>
<a name="line-53"></a><span class='keyword'>import</span> <span class='conid'>Data</span><span class='varop'>.</span><span class='conid'>Char</span>
<a name="line-54"></a> <span class='layout'>(</span> <span class='varid'>toLower</span>
<a name="line-55"></a> <span class='layout'>)</span>
<a name="line-56"></a>
<a name="line-57"></a>
<a name="line-58"></a><span class='comment'>-- ------------------------------------------------------------</span>
<a name="line-59"></a>
<a name="line-60"></a>
<a name="line-61"></a><span class='comment'>-- | Tests whether a URI matches the Relax NG anyURI symbol</span>
<a name="line-62"></a>
<a name="line-63"></a><a name="isRelaxAnyURI"></a><span class='definition'>isRelaxAnyURI</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>Bool</span>
<a name="line-64"></a><span class='definition'>isRelaxAnyURI</span> <span class='varid'>s</span>
<a name="line-65"></a> <span class='keyglyph'>=</span> <span class='varid'>s</span> <span class='varop'>==</span> <span class='str'>""</span> <span class='varop'>||</span>
<a name="line-66"></a> <span class='layout'>(</span> <span class='varid'>isURI</span> <span class='varid'>s</span> <span class='varop'>&&</span> <span class='varid'>not</span> <span class='layout'>(</span><span class='varid'>isRelativeReference</span> <span class='varid'>s</span><span class='layout'>)</span> <span class='varop'>&&</span>
<a name="line-67"></a> <span class='layout'>(</span> <span class='keyword'>let</span> <span class='layout'>(</span><span class='conid'>URI</span> <span class='keyword'>_</span> <span class='keyword'>_</span> <span class='varid'>path</span> <span class='keyword'>_</span> <span class='varid'>frag</span><span class='layout'>)</span> <span class='keyglyph'>=</span> <span class='varid'>fromMaybe</span> <span class='layout'>(</span><span class='conid'>URI</span> <span class='str'>""</span> <span class='conid'>Nothing</span> <span class='str'>""</span> <span class='str'>""</span> <span class='str'>""</span><span class='layout'>)</span> <span class='varop'>$</span> <span class='varid'>parseURI</span> <span class='varid'>s</span>
<a name="line-68"></a> <span class='keyword'>in</span> <span class='layout'>(</span><span class='varid'>frag</span> <span class='varop'>==</span> <span class='str'>""</span> <span class='varop'>&&</span> <span class='varid'>path</span> <span class='varop'>/=</span> <span class='str'>""</span><span class='layout'>)</span>
<a name="line-69"></a> <span class='layout'>)</span>
<a name="line-70"></a> <span class='layout'>)</span>
<a name="line-71"></a>
<a name="line-72"></a>
<a name="line-73"></a><span class='comment'>-- | Tests whether two URIs are equal after 'normalizeURI' is performed</span>
<a name="line-74"></a>
<a name="line-75"></a><a name="compareURI"></a><span class='definition'>compareURI</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>Bool</span>
<a name="line-76"></a><span class='definition'>compareURI</span> <span class='varid'>uri1</span> <span class='varid'>uri2</span>
<a name="line-77"></a> <span class='keyglyph'>=</span> <span class='varid'>normalizeURI</span> <span class='varid'>uri1</span> <span class='varop'>==</span> <span class='varid'>normalizeURI</span> <span class='varid'>uri2</span>
<a name="line-78"></a>
<a name="line-79"></a>
<a name="line-80"></a><span class='comment'>-- | Converts all letters to the corresponding lower-case letter </span>
<a name="line-81"></a><span class='comment'>-- and removes a trailing \"\/\" </span>
<a name="line-82"></a>
<a name="line-83"></a><a name="normalizeURI"></a><span class='definition'>normalizeURI</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>String</span>
<a name="line-84"></a><span class='definition'>normalizeURI</span> <span class='str'>""</span>
<a name="line-85"></a> <span class='keyglyph'>=</span> <span class='str'>""</span>
<a name="line-86"></a><span class='definition'>normalizeURI</span> <span class='varid'>uri</span>
<a name="line-87"></a> <span class='keyglyph'>=</span> <span class='varid'>map</span> <span class='varid'>toLower</span> <span class='layout'>(</span> <span class='keyword'>if</span> <span class='varid'>last</span> <span class='varid'>uri</span> <span class='varop'>==</span> <span class='chr'>'/'</span>
<a name="line-88"></a> <span class='keyword'>then</span> <span class='varid'>init</span> <span class='varid'>uri</span>
<a name="line-89"></a> <span class='keyword'>else</span> <span class='varid'>uri</span>
<a name="line-90"></a> <span class='layout'>)</span>
<a name="line-91"></a>
<a name="line-92"></a><a name="checkByParsing"></a><span class='definition'>checkByParsing</span> <span class='keyglyph'>::</span> <span class='conid'>Parser</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>Bool</span>
<a name="line-93"></a><span class='definition'>checkByParsing</span> <span class='varid'>p</span> <span class='varid'>s</span>
<a name="line-94"></a> <span class='keyglyph'>=</span> <span class='varid'>either</span> <span class='layout'>(</span><span class='varid'>const</span> <span class='conid'>False</span><span class='layout'>)</span> <span class='layout'>(</span><span class='varid'>const</span> <span class='conid'>True</span><span class='layout'>)</span> <span class='layout'>(</span><span class='varid'>parse</span> <span class='varid'>p'</span> <span class='str'>""</span> <span class='varid'>s</span><span class='layout'>)</span>
<a name="line-95"></a> <span class='keyword'>where</span>
<a name="line-96"></a> <span class='varid'>p'</span> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-97"></a> <span class='varid'>r</span> <span class='keyglyph'><-</span> <span class='varid'>p</span>
<a name="line-98"></a> <span class='varid'>eof</span>
<a name="line-99"></a> <span class='varid'>return</span> <span class='varid'>r</span>
<a name="line-100"></a>
<a name="line-101"></a><a name="isNumber"></a><span class='comment'>-- | Tests whether a string matches a number [-](0-9)*</span>
<a name="line-102"></a><span class='definition'>isNumber</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>Bool</span>
<a name="line-103"></a><span class='definition'>isNumber</span>
<a name="line-104"></a> <span class='keyglyph'>=</span> <span class='varid'>checkByParsing</span> <span class='varid'>parseNumber'</span>
<a name="line-105"></a> <span class='keyword'>where</span>
<a name="line-106"></a> <span class='varid'>parseNumber'</span> <span class='keyglyph'>::</span> <span class='conid'>Parser</span> <span class='conid'>String</span>
<a name="line-107"></a> <span class='varid'>parseNumber'</span>
<a name="line-108"></a> <span class='keyglyph'>=</span> <span class='keyword'>do</span>
<a name="line-109"></a> <span class='varid'>skipS0</span>
<a name="line-110"></a> <span class='varid'>m</span> <span class='keyglyph'><-</span> <span class='varid'>option</span> <span class='str'>""</span> <span class='layout'>(</span><span class='varid'>string</span> <span class='str'>"-"</span><span class='layout'>)</span>
<a name="line-111"></a> <span class='varid'>n</span> <span class='keyglyph'><-</span> <span class='varid'>many1</span> <span class='varid'>digit</span>
<a name="line-112"></a> <span class='varid'>skipS0</span>
<a name="line-113"></a> <span class='varid'>return</span> <span class='varop'>$</span> <span class='varid'>m</span> <span class='varop'>++</span> <span class='varid'>n</span>
<a name="line-114"></a>
<a name="line-115"></a><a name="isNmtoken"></a><span class='definition'>isNmtoken</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>Bool</span>
<a name="line-116"></a><span class='definition'>isNmtoken</span> <span class='keyglyph'>=</span> <span class='varid'>checkByParsing</span> <span class='varid'>nmtoken</span>
<a name="line-117"></a>
<a name="line-118"></a><a name="isName"></a><span class='definition'>isName</span> <span class='keyglyph'>::</span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>Bool</span>
<a name="line-119"></a><span class='definition'>isName</span> <span class='keyglyph'>=</span> <span class='varid'>checkByParsing</span> <span class='varid'>name</span>
<a name="line-120"></a>
<a name="line-121"></a><span class='comment'>{- |
<a name="line-122"></a>
<a name="line-123"></a>Formats a list of strings into a single string.
<a name="line-124"></a>The first parameter formats the elements, the 2. is inserted
<a name="line-125"></a>between two elements.
<a name="line-126"></a>
<a name="line-127"></a>example:
<a name="line-128"></a>
<a name="line-129"></a>> formatStringList show ", " ["foo", "bar", "baz"] -> "foo", "bar", "baz"
<a name="line-130"></a>
<a name="line-131"></a>-}</span>
<a name="line-132"></a>
<a name="line-133"></a><a name="formatStringListPatt"></a><span class='definition'>formatStringListPatt</span> <span class='keyglyph'>::</span> <span class='keyglyph'>[</span><span class='conid'>String</span><span class='keyglyph'>]</span> <span class='keyglyph'>-></span> <span class='conid'>String</span>
<a name="line-134"></a><span class='definition'>formatStringListPatt</span>
<a name="line-135"></a> <span class='keyglyph'>=</span> <span class='varid'>formatStringList</span> <span class='layout'>(</span><span class='varop'>++</span> <span class='str'>"-"</span><span class='layout'>)</span> <span class='str'>", "</span>
<a name="line-136"></a>
<a name="line-137"></a><a name="formatStringListPairs"></a><span class='definition'>formatStringListPairs</span> <span class='keyglyph'>::</span> <span class='keyglyph'>[</span><span class='layout'>(</span><span class='conid'>String</span><span class='layout'>,</span><span class='conid'>String</span><span class='layout'>)</span><span class='keyglyph'>]</span> <span class='keyglyph'>-></span> <span class='conid'>String</span>
<a name="line-138"></a><span class='definition'>formatStringListPairs</span>
<a name="line-139"></a> <span class='keyglyph'>=</span> <span class='varid'>formatStringList</span> <span class='varid'>id</span> <span class='str'>", "</span>
<a name="line-140"></a> <span class='varop'>.</span> <span class='varid'>map</span> <span class='layout'>(</span><span class='keyglyph'>\</span> <span class='layout'>(</span><span class='varid'>a</span><span class='layout'>,</span> <span class='varid'>b</span><span class='layout'>)</span> <span class='keyglyph'>-></span> <span class='varid'>a</span> <span class='varop'>++</span> <span class='str'>" = "</span> <span class='varop'>++</span> <span class='varid'>show</span> <span class='varid'>b</span><span class='layout'>)</span>
<a name="line-141"></a>
<a name="line-142"></a><a name="formatStringListQuot"></a><span class='definition'>formatStringListQuot</span> <span class='keyglyph'>::</span> <span class='keyglyph'>[</span><span class='conid'>String</span><span class='keyglyph'>]</span> <span class='keyglyph'>-></span> <span class='conid'>String</span>
<a name="line-143"></a><span class='definition'>formatStringListQuot</span>
<a name="line-144"></a> <span class='keyglyph'>=</span> <span class='varid'>formatStringList</span> <span class='varid'>show</span> <span class='str'>", "</span>
<a name="line-145"></a>
<a name="line-146"></a><a name="formatStringListId"></a><span class='definition'>formatStringListId</span> <span class='keyglyph'>::</span> <span class='keyglyph'>[</span><span class='conid'>String</span><span class='keyglyph'>]</span> <span class='keyglyph'>-></span> <span class='conid'>String</span>
<a name="line-147"></a><span class='definition'>formatStringListId</span>
<a name="line-148"></a> <span class='keyglyph'>=</span> <span class='varid'>formatStringList</span> <span class='varid'>id</span> <span class='str'>", "</span>
<a name="line-149"></a>
<a name="line-150"></a><a name="formatStringListArr"></a><span class='definition'>formatStringListArr</span> <span class='keyglyph'>::</span> <span class='keyglyph'>[</span><span class='conid'>String</span><span class='keyglyph'>]</span> <span class='keyglyph'>-></span> <span class='conid'>String</span>
<a name="line-151"></a><span class='definition'>formatStringListArr</span>
<a name="line-152"></a> <span class='keyglyph'>=</span> <span class='varid'>formatStringList</span> <span class='varid'>show</span> <span class='str'>" -> "</span>
<a name="line-153"></a>
<a name="line-154"></a><a name="formatStringList"></a><span class='definition'>formatStringList</span> <span class='keyglyph'>::</span> <span class='layout'>(</span><span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='conid'>String</span><span class='layout'>)</span> <span class='keyglyph'>-></span> <span class='conid'>String</span> <span class='keyglyph'>-></span> <span class='keyglyph'>[</span><span class='conid'>String</span><span class='keyglyph'>]</span> <span class='keyglyph'>-></span> <span class='conid'>String</span>
<a name="line-155"></a><span class='definition'>formatStringList</span> <span class='sel'>_sf</span> <span class='sel'>_sp</span> <span class='conid'>[]</span>
<a name="line-156"></a> <span class='keyglyph'>=</span> <span class='str'>""</span>
<a name="line-157"></a><span class='definition'>formatStringList</span> <span class='varid'>sf</span> <span class='varid'>spacer</span> <span class='varid'>l</span>
<a name="line-158"></a> <span class='keyglyph'>=</span> <span class='varid'>reverse</span> <span class='varop'>$</span> <span class='varid'>drop</span> <span class='layout'>(</span><span class='varid'>length</span> <span class='varid'>spacer</span><span class='layout'>)</span> <span class='varop'>$</span> <span class='varid'>reverse</span> <span class='varop'>$</span>
<a name="line-159"></a> <span class='varid'>foldr</span> <span class='layout'>(</span><span class='keyglyph'>\</span><span class='varid'>e</span> <span class='keyglyph'>-></span> <span class='layout'>(</span><span class='layout'>(</span><span class='keyword'>if</span> <span class='varid'>e</span> <span class='varop'>/=</span> <span class='str'>""</span> <span class='keyword'>then</span> <span class='varid'>sf</span> <span class='varid'>e</span> <span class='varop'>++</span> <span class='varid'>spacer</span> <span class='keyword'>else</span> <span class='str'>""</span><span class='layout'>)</span> <span class='varop'>++</span><span class='layout'>)</span><span class='layout'>)</span> <span class='str'>""</span> <span class='varid'>l</span>
<a name="line-160"></a>
<a name="line-161"></a><span class='comment'>-- ----------------------------------------</span>
</pre></body>
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