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<title>src/Darcs/Patch/OldDate.hs</title>
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<pre><a name="line-1"></a><span class='hs-comment'>-- Copyright (C) 2003 Peter Simons</span>
<a name="line-2"></a><span class='hs-comment'>-- Copyright (C) 2003,2008 David Roundy</span>
<a name="line-3"></a><span class='hs-comment'>--</span>
<a name="line-4"></a><span class='hs-comment'>-- This program is free software; you can redistribute it and/or modify</span>
<a name="line-5"></a><span class='hs-comment'>-- it under the terms of the GNU General Public License as published by</span>
<a name="line-6"></a><span class='hs-comment'>-- the Free Software Foundation; either version 2, or (at your option)</span>
<a name="line-7"></a><span class='hs-comment'>-- any later version.</span>
<a name="line-8"></a><span class='hs-comment'>--</span>
<a name="line-9"></a><span class='hs-comment'>-- This program is distributed in the hope that it will be useful,</span>
<a name="line-10"></a><span class='hs-comment'>-- but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="line-11"></a><span class='hs-comment'>-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
<a name="line-12"></a><span class='hs-comment'>-- GNU General Public License for more details.</span>
<a name="line-13"></a><span class='hs-comment'>--</span>
<a name="line-14"></a><span class='hs-comment'>-- You should have received a copy of the GNU General Public License</span>
<a name="line-15"></a><span class='hs-comment'>-- along with this program; see the file COPYING. If not, write to</span>
<a name="line-16"></a><span class='hs-comment'>-- the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,</span>
<a name="line-17"></a><span class='hs-comment'>-- Boston, MA 02110-1301, USA.</span>
<a name="line-18"></a>
<a name="line-19"></a><span class='hs-comment'>-- This module is intended to provide backwards-compatibility in the parsing</span>
<a name="line-20"></a><span class='hs-comment'>-- of darcs patches. In other words: don't change it, new features don't get</span>
<a name="line-21"></a><span class='hs-comment'>-- added here. The only user should be Darcs.Patch.Info.</span>
<a name="line-22"></a>
<a name="line-23"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Patch</span><span class='hs-varop'>.</span><span class='hs-conid'>OldDate</span> <span class='hs-layout'>(</span> <span class='hs-varid'>readUTCDate</span><span class='hs-layout'>,</span> <span class='hs-varid'>showIsoDateTime</span> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-24"></a>
<a name="line-25"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>ParserCombinators</span><span class='hs-varop'>.</span><span class='hs-conid'>Parsec</span>
<a name="line-26"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Time</span>
<a name="line-27"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Char</span> <span class='hs-layout'>(</span> <span class='hs-varid'>toUpper</span><span class='hs-layout'>,</span> <span class='hs-varid'>isDigit</span> <span class='hs-layout'>)</span>
<a name="line-28"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Monad</span> <span class='hs-layout'>(</span> <span class='hs-varid'>liftM</span><span class='hs-layout'>,</span> <span class='hs-varid'>liftM2</span> <span class='hs-layout'>)</span>
<a name="line-29"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span><span class='hs-varop'>.</span><span class='hs-conid'>Char8</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>B</span>
<a name="line-30"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span> <span class='hs-varid'>fromMaybe</span> <span class='hs-layout'>)</span>
<a name="line-31"></a>
<a name="line-32"></a><a name="readUTCDate"></a><span class='hs-comment'>-- | Read/interpret a date string, assuming UTC if timezone</span>
<a name="line-33"></a><span class='hs-comment'>-- is not specified in the string</span>
<a name="line-34"></a><span class='hs-definition'>readUTCDate</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CalendarTime</span>
<a name="line-35"></a><span class='hs-definition'>readUTCDate</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>readDate</span> <span class='hs-num'>0</span>
<a name="line-36"></a>
<a name="line-37"></a><a name="readDate"></a><span class='hs-definition'>readDate</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CalendarTime</span>
<a name="line-38"></a><span class='hs-definition'>readDate</span> <span class='hs-varid'>tz</span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'>=</span>
<a name="line-39"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>parseDate</span> <span class='hs-varid'>tz</span> <span class='hs-varid'>d</span> <span class='hs-keyword'>of</span>
<a name="line-40"></a> <span class='hs-conid'>Left</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>error</span> <span class='hs-varid'>e</span>
<a name="line-41"></a> <span class='hs-conid'>Right</span> <span class='hs-varid'>ct</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>ct</span>
<a name="line-42"></a>
<a name="line-43"></a><a name="parseDate"></a><span class='hs-definition'>parseDate</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Either</span> <span class='hs-conid'>String</span> <span class='hs-conid'>CalendarTime</span>
<a name="line-44"></a><span class='hs-definition'>parseDate</span> <span class='hs-varid'>tz</span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'>=</span>
<a name="line-45"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>length</span> <span class='hs-varid'>d</span> <span class='hs-varop'>>=</span> <span class='hs-num'>14</span> <span class='hs-varop'>&&</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>all</span> <span class='hs-varid'>isDigit</span> <span class='hs-varid'>bd</span>
<a name="line-46"></a> <span class='hs-keyword'>then</span> <span class='hs-conid'>Right</span> <span class='hs-varop'>$</span>
<a name="line-47"></a> <span class='hs-conid'>CalendarTime</span> <span class='hs-layout'>(</span><span class='hs-varid'>readI</span> <span class='hs-varop'>$</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>take</span> <span class='hs-num'>4</span> <span class='hs-varid'>bd</span><span class='hs-layout'>)</span>
<a name="line-48"></a> <span class='hs-layout'>(</span><span class='hs-varid'>toEnum</span> <span class='hs-varop'>$</span> <span class='hs-layout'>(</span><span class='hs-varop'>+</span> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-num'>1</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>readI</span> <span class='hs-varop'>$</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>take</span> <span class='hs-num'>2</span> <span class='hs-varop'>$</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>drop</span> <span class='hs-num'>4</span> <span class='hs-varid'>bd</span><span class='hs-layout'>)</span>
<a name="line-49"></a> <span class='hs-layout'>(</span><span class='hs-varid'>readI</span> <span class='hs-varop'>$</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>take</span> <span class='hs-num'>2</span> <span class='hs-varop'>$</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>drop</span> <span class='hs-num'>6</span> <span class='hs-varid'>bd</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- Day</span>
<a name="line-50"></a> <span class='hs-layout'>(</span><span class='hs-varid'>readI</span> <span class='hs-varop'>$</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>take</span> <span class='hs-num'>2</span> <span class='hs-varop'>$</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>drop</span> <span class='hs-num'>8</span> <span class='hs-varid'>bd</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- Hour</span>
<a name="line-51"></a> <span class='hs-layout'>(</span><span class='hs-varid'>readI</span> <span class='hs-varop'>$</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>take</span> <span class='hs-num'>2</span> <span class='hs-varop'>$</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>drop</span> <span class='hs-num'>10</span> <span class='hs-varid'>bd</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- Minute</span>
<a name="line-52"></a> <span class='hs-layout'>(</span><span class='hs-varid'>readI</span> <span class='hs-varop'>$</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>take</span> <span class='hs-num'>2</span> <span class='hs-varop'>$</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>drop</span> <span class='hs-num'>12</span> <span class='hs-varid'>bd</span><span class='hs-layout'>)</span> <span class='hs-comment'>-- Second</span>
<a name="line-53"></a> <span class='hs-num'>0</span> <span class='hs-conid'>Sunday</span> <span class='hs-num'>0</span> <span class='hs-comment'>-- Picosecond, weekday and day of year unknown</span>
<a name="line-54"></a> <span class='hs-str'>"GMT"</span> <span class='hs-num'>0</span> <span class='hs-conid'>False</span>
<a name="line-55"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>let</span> <span class='hs-varid'>dt</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-layout'>{</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>dateTime</span> <span class='hs-varid'>tz</span><span class='hs-layout'>;</span> <span class='hs-varid'>eof</span><span class='hs-layout'>;</span> <span class='hs-varid'>return</span> <span class='hs-varid'>x</span> <span class='hs-layout'>}</span>
<a name="line-56"></a> <span class='hs-keyword'>in</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>parse</span> <span class='hs-varid'>dt</span> <span class='hs-str'>""</span> <span class='hs-varid'>d</span> <span class='hs-keyword'>of</span>
<a name="line-57"></a> <span class='hs-conid'>Left</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Left</span> <span class='hs-varop'>$</span> <span class='hs-str'>"bad date: "</span><span class='hs-varop'>++</span><span class='hs-varid'>d</span><span class='hs-varop'>++</span><span class='hs-str'>" - "</span><span class='hs-varop'>++</span><span class='hs-varid'>show</span> <span class='hs-varid'>e</span>
<a name="line-58"></a> <span class='hs-conid'>Right</span> <span class='hs-varid'>ct</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Right</span> <span class='hs-varid'>ct</span>
<a name="line-59"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>bd</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>pack</span> <span class='hs-layout'>(</span><span class='hs-varid'>take</span> <span class='hs-num'>14</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span>
<a name="line-60"></a> <span class='hs-varid'>readI</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fst</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fromMaybe</span> <span class='hs-layout'>(</span><span class='hs-varid'>error</span> <span class='hs-str'>"parseDate: invalid date"</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-varid'>readInt</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-61"></a>
<a name="line-62"></a><a name="showIsoDateTime"></a><span class='hs-definition'>showIsoDateTime</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CalendarTime</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span>
<a name="line-63"></a><span class='hs-definition'>showIsoDateTime</span> <span class='hs-varid'>ct</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>concat</span> <span class='hs-keyglyph'>[</span> <span class='hs-varid'>show</span> <span class='hs-varop'>$</span> <span class='hs-varid'>ctYear</span> <span class='hs-varid'>ct</span>
<a name="line-64"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>twoDigit</span> <span class='hs-varop'>.</span> <span class='hs-varid'>show</span> <span class='hs-varop'>.</span> <span class='hs-layout'>(</span><span class='hs-varop'>+</span><span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>fromEnum</span> <span class='hs-varop'>$</span> <span class='hs-varid'>ctMonth</span> <span class='hs-varid'>ct</span>
<a name="line-65"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>twoDigit</span> <span class='hs-varop'>.</span> <span class='hs-varid'>show</span> <span class='hs-varop'>$</span> <span class='hs-varid'>ctDay</span> <span class='hs-varid'>ct</span>
<a name="line-66"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>twoDigit</span> <span class='hs-varop'>.</span> <span class='hs-varid'>show</span> <span class='hs-varop'>$</span> <span class='hs-varid'>ctHour</span> <span class='hs-varid'>ct</span>
<a name="line-67"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>twoDigit</span> <span class='hs-varop'>.</span> <span class='hs-varid'>show</span> <span class='hs-varop'>$</span> <span class='hs-varid'>ctMin</span> <span class='hs-varid'>ct</span>
<a name="line-68"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>twoDigit</span> <span class='hs-varop'>.</span> <span class='hs-varid'>show</span> <span class='hs-varop'>$</span> <span class='hs-varid'>ctSec</span> <span class='hs-varid'>ct</span>
<a name="line-69"></a> <span class='hs-keyglyph'>]</span>
<a name="line-70"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>twoDigit</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>undefined</span>
<a name="line-71"></a> <span class='hs-varid'>twoDigit</span> <span class='hs-varid'>x</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-conop'>:</span><span class='hs-conid'>[]</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-chr'>'0'</span> <span class='hs-conop'>:</span> <span class='hs-varid'>x</span>
<a name="line-72"></a> <span class='hs-varid'>twoDigit</span> <span class='hs-varid'>x</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-conop'>:</span><span class='hs-keyword'>_</span><span class='hs-conop'>:</span><span class='hs-conid'>[]</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span>
<a name="line-73"></a> <span class='hs-varid'>twoDigit</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>undefined</span>
<a name="line-74"></a>
<a name="line-75"></a><span class='hs-comment'>----- Parser Combinators ---------------------------------------------</span>
<a name="line-76"></a>
<a name="line-77"></a><span class='hs-comment'>-- |Case-insensitive variant of Parsec's 'char' function.</span>
<a name="line-78"></a>
<a name="line-79"></a><a name="caseChar"></a><span class='hs-definition'>caseChar</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Char</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GenParser</span> <span class='hs-conid'>Char</span> <span class='hs-varid'>a</span> <span class='hs-conid'>Char</span>
<a name="line-80"></a><span class='hs-definition'>caseChar</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>satisfy</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>toUpper</span> <span class='hs-varid'>x</span> <span class='hs-varop'>==</span> <span class='hs-varid'>toUpper</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span>
<a name="line-81"></a>
<a name="line-82"></a><span class='hs-comment'>-- |Case-insensitive variant of Parsec's 'string' function.</span>
<a name="line-83"></a>
<a name="line-84"></a><a name="caseString"></a><span class='hs-definition'>caseString</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GenParser</span> <span class='hs-conid'>Char</span> <span class='hs-varid'>a</span> <span class='hs-conid'>()</span>
<a name="line-85"></a><span class='hs-definition'>caseString</span> <span class='hs-varid'>cs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>mapM_</span> <span class='hs-varid'>caseChar</span> <span class='hs-varid'>cs</span> <span class='hs-varop'><?></span> <span class='hs-varid'>cs</span>
<a name="line-86"></a>
<a name="line-87"></a><span class='hs-comment'>-- |Match a parser at least @n@ times.</span>
<a name="line-88"></a>
<a name="line-89"></a><a name="manyN"></a><span class='hs-definition'>manyN</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GenParser</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GenParser</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>c</span><span class='hs-keyglyph'>]</span>
<a name="line-90"></a><span class='hs-definition'>manyN</span> <span class='hs-varid'>n</span> <span class='hs-varid'>p</span>
<a name="line-91"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>n</span> <span class='hs-varop'><=</span> <span class='hs-num'>0</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>[]</span>
<a name="line-92"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>liftM2</span> <span class='hs-layout'>(</span><span class='hs-varop'>++</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>count</span> <span class='hs-varid'>n</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>many</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span>
<a name="line-93"></a>
<a name="line-94"></a><span class='hs-comment'>-- |Match a parser at least @n@ times, but no more than @m@ times.</span>
<a name="line-95"></a>
<a name="line-96"></a><a name="manyNtoM"></a><span class='hs-definition'>manyNtoM</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GenParser</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>GenParser</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>c</span><span class='hs-keyglyph'>]</span>
<a name="line-97"></a><span class='hs-definition'>manyNtoM</span> <span class='hs-varid'>n</span> <span class='hs-varid'>m</span> <span class='hs-varid'>p</span>
<a name="line-98"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>n</span> <span class='hs-varop'><</span> <span class='hs-num'>0</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>[]</span>
<a name="line-99"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>n</span> <span class='hs-varop'>></span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-conid'>[]</span>
<a name="line-100"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>n</span> <span class='hs-varop'>==</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>count</span> <span class='hs-varid'>n</span> <span class='hs-varid'>p</span>
<a name="line-101"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>n</span> <span class='hs-varop'>==</span> <span class='hs-num'>0</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>foldr</span> <span class='hs-layout'>(</span><span class='hs-varop'><|></span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>return</span> <span class='hs-conid'>[]</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>try</span> <span class='hs-varop'>$</span> <span class='hs-varid'>count</span> <span class='hs-varid'>x</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>reverse</span> <span class='hs-keyglyph'>[</span><span class='hs-num'>1</span><span class='hs-keyglyph'>..</span><span class='hs-varid'>m</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-102"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>liftM2</span> <span class='hs-layout'>(</span><span class='hs-varop'>++</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>count</span> <span class='hs-varid'>n</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>manyNtoM</span> <span class='hs-num'>0</span> <span class='hs-layout'>(</span><span class='hs-varid'>m</span><span class='hs-comment'>-</span><span class='hs-varid'>n</span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span>
<a name="line-103"></a>
<a name="line-104"></a>
<a name="line-105"></a><span class='hs-comment'>----- Date/Time Parser -----------------------------------------------</span>
<a name="line-106"></a>
<a name="line-107"></a><a name="dateTime"></a><span class='hs-definition'>dateTime</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CharParser</span> <span class='hs-varid'>a</span> <span class='hs-conid'>CalendarTime</span>
<a name="line-108"></a><span class='hs-definition'>dateTime</span> <span class='hs-varid'>tz</span> <span class='hs-keyglyph'>=</span>
<a name="line-109"></a> <span class='hs-varid'>choice</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>try</span> <span class='hs-varop'>$</span> <span class='hs-varid'>cvsDateTime</span> <span class='hs-varid'>tz</span><span class='hs-layout'>,</span>
<a name="line-110"></a> <span class='hs-varid'>try</span> <span class='hs-varop'>$</span> <span class='hs-varid'>iso8601DateTime</span> <span class='hs-varid'>tz</span><span class='hs-layout'>,</span>
<a name="line-111"></a> <span class='hs-varid'>oldDateTime</span><span class='hs-keyglyph'>]</span>
<a name="line-112"></a>
<a name="line-113"></a><a name="cvsDateTime"></a><span class='hs-definition'>cvsDateTime</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CharParser</span> <span class='hs-varid'>a</span> <span class='hs-conid'>CalendarTime</span>
<a name="line-114"></a><span class='hs-definition'>cvsDateTime</span> <span class='hs-varid'>tz</span> <span class='hs-keyglyph'>=</span>
<a name="line-115"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>year</span>
<a name="line-116"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>char</span> <span class='hs-chr'>'/'</span>
<a name="line-117"></a> <span class='hs-varid'>mon</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>monthNum</span>
<a name="line-118"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>char</span> <span class='hs-chr'>'/'</span>
<a name="line-119"></a> <span class='hs-varid'>d</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>day</span>
<a name="line-120"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mySpaces</span>
<a name="line-121"></a> <span class='hs-varid'>h</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>hour</span>
<a name="line-122"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>char</span> <span class='hs-chr'>':'</span>
<a name="line-123"></a> <span class='hs-varid'>m</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>minute</span>
<a name="line-124"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>char</span> <span class='hs-chr'>':'</span>
<a name="line-125"></a> <span class='hs-varid'>s</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>second</span>
<a name="line-126"></a> <span class='hs-varid'>z</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>option</span> <span class='hs-varid'>tz</span> <span class='hs-varop'>$</span> <span class='hs-varid'>mySpaces</span> <span class='hs-varop'>>></span> <span class='hs-varid'>zone</span>
<a name="line-127"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>CalendarTime</span> <span class='hs-varid'>y</span> <span class='hs-varid'>mon</span> <span class='hs-varid'>d</span> <span class='hs-varid'>h</span> <span class='hs-varid'>m</span> <span class='hs-varid'>s</span> <span class='hs-num'>0</span> <span class='hs-conid'>Monday</span> <span class='hs-num'>0</span> <span class='hs-str'>""</span> <span class='hs-varid'>z</span> <span class='hs-conid'>False</span><span class='hs-layout'>)</span>
<a name="line-128"></a>
<a name="line-129"></a><a name="oldDateTime"></a><span class='hs-definition'>oldDateTime</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CharParser</span> <span class='hs-varid'>a</span> <span class='hs-conid'>CalendarTime</span>
<a name="line-130"></a><span class='hs-definition'>oldDateTime</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>wd</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>dayName</span>
<a name="line-131"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mySpaces</span>
<a name="line-132"></a> <span class='hs-varid'>mon</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>monthName</span>
<a name="line-133"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mySpaces</span>
<a name="line-134"></a> <span class='hs-varid'>d</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>day</span>
<a name="line-135"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mySpaces</span>
<a name="line-136"></a> <span class='hs-varid'>h</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>hour</span>
<a name="line-137"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>char</span> <span class='hs-chr'>':'</span>
<a name="line-138"></a> <span class='hs-varid'>m</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>minute</span>
<a name="line-139"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>char</span> <span class='hs-chr'>':'</span>
<a name="line-140"></a> <span class='hs-varid'>s</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>second</span>
<a name="line-141"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mySpaces</span>
<a name="line-142"></a> <span class='hs-varid'>z</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>zone</span>
<a name="line-143"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mySpaces</span>
<a name="line-144"></a> <span class='hs-varid'>y</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>year</span>
<a name="line-145"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-conid'>CalendarTime</span> <span class='hs-varid'>y</span> <span class='hs-varid'>mon</span> <span class='hs-varid'>d</span> <span class='hs-varid'>h</span> <span class='hs-varid'>m</span> <span class='hs-varid'>s</span> <span class='hs-num'>0</span> <span class='hs-varid'>wd</span> <span class='hs-num'>0</span> <span class='hs-str'>""</span> <span class='hs-varid'>z</span> <span class='hs-conid'>False</span><span class='hs-layout'>)</span>
<a name="line-146"></a>
<a name="line-147"></a><a name="iso8601DateTime"></a><span class='hs-comment'>{- FIXME: In case you ever want to use this outside of darcs, you should note
<a name="line-148"></a> that this implementation of ISO 8601 is not complete.
<a name="line-149"></a>
<a name="line-150"></a> reluctant to implement (ambiguous!):
<a name="line-151"></a> * years > 9999
<a name="line-152"></a> * truncated representations with implied century (89 for 1989)
<a name="line-153"></a> unimplemented:
<a name="line-154"></a> * repeated durations (not relevant)
<a name="line-155"></a> * lowest order component fractions in intervals
<a name="line-156"></a> * negative dates (BC)
<a name="line-157"></a> unverified or too relaxed:
<a name="line-158"></a> * the difference between 24h and 0h
<a name="line-159"></a> * allows stuff like 2005-1212; either you use the hyphen all the way
<a name="line-160"></a> (2005-12-12) or you don't use it at all (20051212), but you don't use
<a name="line-161"></a> it halfway, likewise with time
<a name="line-162"></a> * No bounds checking whatsoever on intervals!
<a name="line-163"></a> (next action: read iso doc to see if bounds-checking required?) -}</span>
<a name="line-164"></a><span class='hs-definition'>iso8601DateTime</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CharParser</span> <span class='hs-varid'>a</span> <span class='hs-conid'>CalendarTime</span>
<a name="line-165"></a><span class='hs-definition'>iso8601DateTime</span> <span class='hs-varid'>localTz</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>try</span> <span class='hs-varop'>$</span>
<a name="line-166"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>iso8601Date</span>
<a name="line-167"></a> <span class='hs-varid'>t</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>option</span> <span class='hs-varid'>id</span> <span class='hs-varop'>$</span> <span class='hs-varid'>try</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>optional</span> <span class='hs-varop'>$</span> <span class='hs-varid'>oneOf</span> <span class='hs-str'>" T"</span>
<a name="line-168"></a> <span class='hs-varid'>iso8601Time</span>
<a name="line-169"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>t</span> <span class='hs-varop'>$</span> <span class='hs-varid'>d</span> <span class='hs-layout'>{</span> <span class='hs-varid'>ctTZ</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>localTz</span> <span class='hs-layout'>}</span>
<a name="line-170"></a>
<a name="line-171"></a><a name="iso8601Date"></a><span class='hs-definition'>iso8601Date</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CharParser</span> <span class='hs-varid'>a</span> <span class='hs-conid'>CalendarTime</span>
<a name="line-172"></a><span class='hs-definition'>iso8601Date</span> <span class='hs-keyglyph'>=</span>
<a name="line-173"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>calendar_date</span> <span class='hs-varop'><|></span> <span class='hs-varid'>week_date</span> <span class='hs-varop'><|></span> <span class='hs-varid'>ordinal_date</span>
<a name="line-174"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>foldr</span> <span class='hs-layout'>(</span><span class='hs-varop'>$</span><span class='hs-layout'>)</span> <span class='hs-varid'>nullCalendar</span> <span class='hs-varid'>d</span>
<a name="line-175"></a> <span class='hs-keyword'>where</span>
<a name="line-176"></a> <span class='hs-varid'>calendar_date</span> <span class='hs-keyglyph'>=</span> <span class='hs-comment'>-- yyyy-mm-dd</span>
<a name="line-177"></a> <span class='hs-varid'>try</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>optchain</span> <span class='hs-varid'>year_</span> <span class='hs-keyglyph'>[</span> <span class='hs-layout'>(</span><span class='hs-varid'>dash</span><span class='hs-layout'>,</span> <span class='hs-varid'>month_</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>dash</span><span class='hs-layout'>,</span> <span class='hs-varid'>day_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>]</span>
<a name="line-178"></a> <span class='hs-comment'>-- allow other variants to be parsed correctly</span>
<a name="line-179"></a> <span class='hs-varid'>notFollowedBy</span> <span class='hs-layout'>(</span><span class='hs-varid'>digit</span> <span class='hs-varop'><|></span> <span class='hs-varid'>char</span> <span class='hs-chr'>'W'</span><span class='hs-layout'>)</span>
<a name="line-180"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>d</span>
<a name="line-181"></a> <span class='hs-varid'>week_date</span> <span class='hs-keyglyph'>=</span> <span class='hs-varop'>--yyyy-Www-dd</span>
<a name="line-182"></a> <span class='hs-varid'>try</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>yfn</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>year_</span>
<a name="line-183"></a> <span class='hs-varid'>optional</span> <span class='hs-varid'>dash</span>
<a name="line-184"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>char</span> <span class='hs-chr'>'W'</span>
<a name="line-185"></a> <span class='hs-comment'>-- offset human 'week 1' -> computer 'week 0'</span>
<a name="line-186"></a> <span class='hs-varid'>w'</span> <span class='hs-keyglyph'><-</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>x</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>x</span><span class='hs-comment'>-</span><span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-varop'>`liftM`</span> <span class='hs-varid'>twoDigits</span>
<a name="line-187"></a> <span class='hs-varid'>wd</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>option</span> <span class='hs-num'>1</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span> <span class='hs-layout'>{</span> <span class='hs-varid'>optional</span> <span class='hs-varid'>dash</span><span class='hs-layout'>;</span> <span class='hs-varid'>nDigits</span> <span class='hs-num'>1</span> <span class='hs-layout'>}</span>
<a name="line-188"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>yfn</span> <span class='hs-varid'>nullCalendar</span>
<a name="line-189"></a> <span class='hs-varid'>firstDay</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ctWDay</span> <span class='hs-varid'>y</span>
<a name="line-190"></a> <span class='hs-comment'>-- things that make this complicated</span>
<a name="line-191"></a> <span class='hs-comment'>-- 1. iso8601 weeks start from Monday; Haskell weeks start from Sunday</span>
<a name="line-192"></a> <span class='hs-comment'>-- 2. the first week is the one that contains at least Thursday</span>
<a name="line-193"></a> <span class='hs-comment'>-- if the year starts after Thursday, then some days of the year</span>
<a name="line-194"></a> <span class='hs-comment'>-- will have already passed before the first week</span>
<a name="line-195"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>afterThursday</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>firstDay</span> <span class='hs-varop'>==</span> <span class='hs-conid'>Sunday</span> <span class='hs-varop'>||</span> <span class='hs-varid'>firstDay</span> <span class='hs-varop'>></span> <span class='hs-conid'>Thursday</span>
<a name="line-196"></a> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>afterThursday</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>w'</span><span class='hs-varop'>+</span><span class='hs-num'>1</span> <span class='hs-keyword'>else</span> <span class='hs-varid'>w'</span>
<a name="line-197"></a> <span class='hs-varid'>diff</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>c</span> <span class='hs-layout'>{</span> <span class='hs-varid'>ctDay</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-num'>7</span> <span class='hs-varop'>*</span> <span class='hs-varid'>w</span><span class='hs-layout'>)</span> <span class='hs-varop'>+</span> <span class='hs-varid'>wd</span> <span class='hs-comment'>-</span> <span class='hs-layout'>(</span><span class='hs-varid'>fromEnum</span> <span class='hs-varid'>firstDay</span><span class='hs-layout'>)</span> <span class='hs-layout'>}</span>
<a name="line-198"></a> <span class='hs-varid'>return</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>toUTCTime</span><span class='hs-varop'>.</span><span class='hs-varid'>toClockTime</span><span class='hs-varop'>.</span><span class='hs-varid'>diff</span><span class='hs-varop'>.</span><span class='hs-varid'>yfn</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span>
<a name="line-199"></a> <span class='hs-varid'>ordinal_date</span> <span class='hs-keyglyph'>=</span> <span class='hs-comment'>-- yyyy-ddd</span>
<a name="line-200"></a> <span class='hs-varid'>try</span> <span class='hs-varop'>$</span> <span class='hs-varid'>optchain</span> <span class='hs-varid'>year_</span> <span class='hs-keyglyph'>[</span> <span class='hs-layout'>(</span><span class='hs-varid'>dash</span><span class='hs-layout'>,</span> <span class='hs-varid'>yearDay_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>]</span>
<a name="line-201"></a> <span class='hs-comment'>--</span>
<a name="line-202"></a> <span class='hs-varid'>year_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>try</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>y</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>fourDigits</span> <span class='hs-varop'><?></span> <span class='hs-str'>"year (0000-9999)"</span>
<a name="line-203"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>c</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>c</span> <span class='hs-layout'>{</span> <span class='hs-varid'>ctYear</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>y</span> <span class='hs-layout'>}</span>
<a name="line-204"></a> <span class='hs-varid'>month_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>try</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>twoDigits</span> <span class='hs-varop'><?></span> <span class='hs-str'>"month (1 to 12)"</span>
<a name="line-205"></a> <span class='hs-comment'>-- we (artificially) use ctPicosec to indicate</span>
<a name="line-206"></a> <span class='hs-comment'>-- whether the month has been specified.</span>
<a name="line-207"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>c</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>c</span> <span class='hs-layout'>{</span> <span class='hs-varid'>ctMonth</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>intToMonth</span> <span class='hs-varid'>m</span><span class='hs-layout'>,</span> <span class='hs-varid'>ctPicosec</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0</span> <span class='hs-layout'>}</span>
<a name="line-208"></a> <span class='hs-varid'>day_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>try</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>twoDigits</span> <span class='hs-varop'><?></span> <span class='hs-str'>"day in month (1 to 31)"</span>
<a name="line-209"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>c</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>c</span> <span class='hs-layout'>{</span> <span class='hs-varid'>ctDay</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>d</span> <span class='hs-layout'>}</span>
<a name="line-210"></a> <span class='hs-varid'>yearDay_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>try</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>nDigits</span> <span class='hs-num'>3</span> <span class='hs-varop'><?></span> <span class='hs-str'>"day in year (1 to 366)"</span>
<a name="line-211"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>c</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>c</span> <span class='hs-layout'>{</span> <span class='hs-varid'>ctYDay</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>d</span> <span class='hs-layout'>}</span>
<a name="line-212"></a> <span class='hs-varid'>dash</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>char</span> <span class='hs-chr'>'-'</span>
<a name="line-213"></a>
<a name="line-214"></a><a name="iso8601Time"></a><span class='hs-comment'>-- we return a function which sets the time on another calendar</span>
<a name="line-215"></a><span class='hs-definition'>iso8601Time</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CharParser</span> <span class='hs-varid'>a</span> <span class='hs-layout'>(</span><span class='hs-conid'>CalendarTime</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CalendarTime</span><span class='hs-layout'>)</span>
<a name="line-216"></a><span class='hs-definition'>iso8601Time</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>try</span> <span class='hs-varop'>$</span>
<a name="line-217"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>ts</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>optchain</span> <span class='hs-varid'>hour_</span> <span class='hs-keyglyph'>[</span> <span class='hs-layout'>(</span><span class='hs-varid'>colon</span> <span class='hs-layout'>,</span> <span class='hs-varid'>min_</span><span class='hs-layout'>)</span>
<a name="line-218"></a> <span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>colon</span> <span class='hs-layout'>,</span> <span class='hs-varid'>sec_</span><span class='hs-layout'>)</span>
<a name="line-219"></a> <span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varid'>oneOf</span> <span class='hs-str'>",."</span><span class='hs-layout'>,</span> <span class='hs-varid'>pico_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>]</span>
<a name="line-220"></a> <span class='hs-varid'>z</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>option</span> <span class='hs-varid'>id</span> <span class='hs-varop'>$</span> <span class='hs-varid'>choice</span> <span class='hs-keyglyph'>[</span> <span class='hs-varid'>zulu</span> <span class='hs-layout'>,</span> <span class='hs-varid'>offset</span> <span class='hs-keyglyph'>]</span>
<a name="line-221"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>foldr</span> <span class='hs-layout'>(</span><span class='hs-varop'>.</span><span class='hs-layout'>)</span> <span class='hs-varid'>id</span> <span class='hs-layout'>(</span><span class='hs-varid'>z</span><span class='hs-conop'>:</span><span class='hs-varid'>ts</span><span class='hs-layout'>)</span>
<a name="line-222"></a> <span class='hs-keyword'>where</span>
<a name="line-223"></a> <span class='hs-varid'>hour_</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>h</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>twoDigits</span>
<a name="line-224"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>c</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>c</span> <span class='hs-layout'>{</span> <span class='hs-varid'>ctHour</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>h</span> <span class='hs-layout'>}</span>
<a name="line-225"></a> <span class='hs-varid'>min_</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>twoDigits</span>
<a name="line-226"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>c</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>c</span> <span class='hs-layout'>{</span> <span class='hs-varid'>ctMin</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>m</span> <span class='hs-layout'>}</span>
<a name="line-227"></a> <span class='hs-varid'>sec_</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>twoDigits</span>
<a name="line-228"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>c</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>c</span> <span class='hs-layout'>{</span> <span class='hs-varid'>ctSec</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>s</span> <span class='hs-layout'>}</span>
<a name="line-229"></a> <span class='hs-varid'>pico_</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>digs</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>many</span> <span class='hs-varid'>digit</span>
<a name="line-230"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>picoExp</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>12</span>
<a name="line-231"></a> <span class='hs-varid'>digsExp</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>length</span> <span class='hs-varid'>digs</span>
<a name="line-232"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>frac</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>null</span> <span class='hs-varid'>digs</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0</span>
<a name="line-233"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>digsExp</span> <span class='hs-varop'>></span> <span class='hs-varid'>picoExp</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>read</span> <span class='hs-varop'>$</span> <span class='hs-varid'>take</span> <span class='hs-varid'>picoExp</span> <span class='hs-varid'>digs</span>
<a name="line-234"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>10</span> <span class='hs-varop'>^</span> <span class='hs-layout'>(</span><span class='hs-varid'>picoExp</span> <span class='hs-comment'>-</span> <span class='hs-varid'>digsExp</span><span class='hs-layout'>)</span> <span class='hs-varop'>*</span> <span class='hs-layout'>(</span><span class='hs-varid'>read</span> <span class='hs-varid'>digs</span><span class='hs-layout'>)</span>
<a name="line-235"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>c</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>c</span> <span class='hs-layout'>{</span> <span class='hs-varid'>ctPicosec</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>frac</span> <span class='hs-layout'>}</span>
<a name="line-236"></a> <span class='hs-varid'>zulu</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-layout'>{</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>char</span> <span class='hs-chr'>'Z'</span><span class='hs-layout'>;</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>c</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>c</span> <span class='hs-layout'>{</span> <span class='hs-varid'>ctTZ</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0</span> <span class='hs-layout'>}</span><span class='hs-layout'>)</span> <span class='hs-layout'>}</span>
<a name="line-237"></a> <span class='hs-varid'>offset</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>sign</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>choice</span> <span class='hs-keyglyph'>[</span> <span class='hs-keyword'>do</span> <span class='hs-layout'>{</span> <span class='hs-varid'>char</span> <span class='hs-chr'>'+'</span> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-num'>1</span> <span class='hs-layout'>}</span>
<a name="line-238"></a> <span class='hs-layout'>,</span> <span class='hs-keyword'>do</span> <span class='hs-layout'>{</span> <span class='hs-varid'>char</span> <span class='hs-chr'>'-'</span> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-layout'>}</span> <span class='hs-keyglyph'>]</span>
<a name="line-239"></a> <span class='hs-varid'>h</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>twoDigits</span>
<a name="line-240"></a> <span class='hs-varid'>m</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>option</span> <span class='hs-num'>0</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span> <span class='hs-layout'>{</span> <span class='hs-varid'>optional</span> <span class='hs-varid'>colon</span><span class='hs-layout'>;</span> <span class='hs-varid'>twoDigits</span> <span class='hs-layout'>}</span>
<a name="line-241"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>c</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>c</span> <span class='hs-layout'>{</span> <span class='hs-varid'>ctTZ</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>sign</span> <span class='hs-varop'>*</span> <span class='hs-num'>60</span> <span class='hs-varop'>*</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>h</span><span class='hs-varop'>*</span><span class='hs-num'>60</span><span class='hs-layout'>)</span><span class='hs-varop'>+</span><span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-layout'>}</span>
<a name="line-242"></a> <span class='hs-varid'>colon</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>char</span> <span class='hs-chr'>':'</span>
<a name="line-243"></a>
<a name="line-244"></a><a name="optchain"></a><span class='hs-definition'>optchain</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CharParser</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-conid'>CharParser</span> <span class='hs-varid'>a</span> <span class='hs-varid'>c</span><span class='hs-layout'>,</span> <span class='hs-conid'>CharParser</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CharParser</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>b</span><span class='hs-keyglyph'>]</span>
<a name="line-245"></a><span class='hs-definition'>optchain</span> <span class='hs-varid'>p</span> <span class='hs-varid'>next</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>try</span> <span class='hs-varop'>$</span>
<a name="line-246"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>r1</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>p</span>
<a name="line-247"></a> <span class='hs-varid'>r2</span> <span class='hs-keyglyph'><-</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>next</span> <span class='hs-keyword'>of</span>
<a name="line-248"></a> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-conid'>[]</span>
<a name="line-249"></a> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>sep</span><span class='hs-layout'>,</span><span class='hs-varid'>p2</span><span class='hs-layout'>)</span><span class='hs-conop'>:</span><span class='hs-varid'>next2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>option</span> <span class='hs-conid'>[]</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span> <span class='hs-layout'>{</span> <span class='hs-varid'>optional</span> <span class='hs-varid'>sep</span><span class='hs-layout'>;</span> <span class='hs-varid'>optchain</span> <span class='hs-varid'>p2</span> <span class='hs-varid'>next2</span> <span class='hs-layout'>}</span>
<a name="line-250"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>r1</span><span class='hs-conop'>:</span><span class='hs-varid'>r2</span><span class='hs-layout'>)</span>
<a name="line-251"></a>
<a name="line-252"></a><a name="nDigits"></a><span class='hs-definition'>nDigits</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>CharParser</span> <span class='hs-varid'>a</span> <span class='hs-conid'>Int</span>
<a name="line-253"></a><span class='hs-definition'>nDigits</span> <span class='hs-varid'>n</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>read</span> <span class='hs-varop'>`liftM`</span> <span class='hs-varid'>count</span> <span class='hs-varid'>n</span> <span class='hs-varid'>digit</span>
<a name="line-254"></a>
<a name="line-255"></a><a name="twoDigits"></a><span class='hs-definition'>twoDigits</span><span class='hs-layout'>,</span> <span class='hs-varid'>fourDigits</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CharParser</span> <span class='hs-varid'>a</span> <span class='hs-conid'>Int</span>
<a name="line-256"></a><span class='hs-definition'>twoDigits</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nDigits</span> <span class='hs-num'>2</span>
<a name="line-257"></a><a name="fourDigits"></a><span class='hs-definition'>fourDigits</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>nDigits</span> <span class='hs-num'>4</span>
<a name="line-258"></a>
<a name="line-259"></a><a name="mySpaces"></a><span class='hs-definition'>mySpaces</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CharParser</span> <span class='hs-varid'>a</span> <span class='hs-conid'>String</span>
<a name="line-260"></a><span class='hs-definition'>mySpaces</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>manyN</span> <span class='hs-num'>1</span> <span class='hs-varop'>$</span> <span class='hs-varid'>char</span> <span class='hs-chr'>' '</span>
<a name="line-261"></a>
<a name="line-262"></a><a name="dayName"></a><span class='hs-definition'>dayName</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CharParser</span> <span class='hs-varid'>a</span> <span class='hs-conid'>Day</span>
<a name="line-263"></a><span class='hs-definition'>dayName</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>choice</span>
<a name="line-264"></a> <span class='hs-keyglyph'>[</span> <span class='hs-varid'>caseString</span> <span class='hs-str'>"Mon"</span> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-conid'>Monday</span>
<a name="line-265"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>try</span> <span class='hs-layout'>(</span><span class='hs-varid'>caseString</span> <span class='hs-str'>"Tue"</span><span class='hs-layout'>)</span> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-conid'>Tuesday</span>
<a name="line-266"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>caseString</span> <span class='hs-str'>"Wed"</span> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-conid'>Wednesday</span>
<a name="line-267"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>caseString</span> <span class='hs-str'>"Thu"</span> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-conid'>Thursday</span>
<a name="line-268"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>caseString</span> <span class='hs-str'>"Fri"</span> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-conid'>Friday</span>
<a name="line-269"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>try</span> <span class='hs-layout'>(</span><span class='hs-varid'>caseString</span> <span class='hs-str'>"Sat"</span><span class='hs-layout'>)</span> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-conid'>Saturday</span>
<a name="line-270"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>caseString</span> <span class='hs-str'>"Sun"</span> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-conid'>Sunday</span>
<a name="line-271"></a> <span class='hs-keyglyph'>]</span>
<a name="line-272"></a>
<a name="line-273"></a><a name="year"></a><span class='hs-definition'>year</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CharParser</span> <span class='hs-varid'>a</span> <span class='hs-conid'>Int</span>
<a name="line-274"></a><span class='hs-definition'>year</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fourDigits</span>
<a name="line-275"></a>
<a name="line-276"></a><a name="monthNum"></a><span class='hs-definition'>monthNum</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CharParser</span> <span class='hs-varid'>a</span> <span class='hs-conid'>Month</span>
<a name="line-277"></a><span class='hs-definition'>monthNum</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>mn</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>manyNtoM</span> <span class='hs-num'>1</span> <span class='hs-num'>2</span> <span class='hs-varid'>digit</span>
<a name="line-278"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>intToMonth</span> <span class='hs-varop'>$</span> <span class='hs-layout'>(</span><span class='hs-varid'>read</span> <span class='hs-varid'>mn</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span><span class='hs-layout'>)</span>
<a name="line-279"></a>
<a name="line-280"></a><a name="intToMonth"></a><span class='hs-definition'>intToMonth</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Month</span>
<a name="line-281"></a><span class='hs-definition'>intToMonth</span> <span class='hs-num'>1</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>January</span>
<a name="line-282"></a><span class='hs-definition'>intToMonth</span> <span class='hs-num'>2</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>February</span>
<a name="line-283"></a><span class='hs-definition'>intToMonth</span> <span class='hs-num'>3</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>March</span>
<a name="line-284"></a><span class='hs-definition'>intToMonth</span> <span class='hs-num'>4</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>April</span>
<a name="line-285"></a><span class='hs-definition'>intToMonth</span> <span class='hs-num'>5</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>May</span>
<a name="line-286"></a><span class='hs-definition'>intToMonth</span> <span class='hs-num'>6</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>June</span>
<a name="line-287"></a><span class='hs-definition'>intToMonth</span> <span class='hs-num'>7</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>July</span>
<a name="line-288"></a><span class='hs-definition'>intToMonth</span> <span class='hs-num'>8</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>August</span>
<a name="line-289"></a><span class='hs-definition'>intToMonth</span> <span class='hs-num'>9</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>September</span>
<a name="line-290"></a><span class='hs-definition'>intToMonth</span> <span class='hs-num'>10</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>October</span>
<a name="line-291"></a><span class='hs-definition'>intToMonth</span> <span class='hs-num'>11</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>November</span>
<a name="line-292"></a><span class='hs-definition'>intToMonth</span> <span class='hs-num'>12</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>December</span>
<a name="line-293"></a><span class='hs-definition'>intToMonth</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>error</span> <span class='hs-str'>"invalid month!"</span>
<a name="line-294"></a>
<a name="line-295"></a><a name="monthName"></a><span class='hs-definition'>monthName</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CharParser</span> <span class='hs-varid'>a</span> <span class='hs-conid'>Month</span>
<a name="line-296"></a><span class='hs-definition'>monthName</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>choice</span>
<a name="line-297"></a> <span class='hs-keyglyph'>[</span> <span class='hs-varid'>try</span> <span class='hs-layout'>(</span><span class='hs-varid'>caseString</span> <span class='hs-str'>"Jan"</span><span class='hs-layout'>)</span> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-conid'>January</span>
<a name="line-298"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>caseString</span> <span class='hs-str'>"Feb"</span> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-conid'>February</span>
<a name="line-299"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>try</span> <span class='hs-layout'>(</span><span class='hs-varid'>caseString</span> <span class='hs-str'>"Mar"</span><span class='hs-layout'>)</span> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-conid'>March</span>
<a name="line-300"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>try</span> <span class='hs-layout'>(</span><span class='hs-varid'>caseString</span> <span class='hs-str'>"Apr"</span><span class='hs-layout'>)</span> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-conid'>April</span>
<a name="line-301"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>caseString</span> <span class='hs-str'>"May"</span> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-conid'>May</span>
<a name="line-302"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>try</span> <span class='hs-layout'>(</span><span class='hs-varid'>caseString</span> <span class='hs-str'>"Jun"</span><span class='hs-layout'>)</span> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-conid'>June</span>
<a name="line-303"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>caseString</span> <span class='hs-str'>"Jul"</span> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-conid'>July</span>
<a name="line-304"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>caseString</span> <span class='hs-str'>"Aug"</span> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-conid'>August</span>
<a name="line-305"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>caseString</span> <span class='hs-str'>"Sep"</span> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-conid'>September</span>
<a name="line-306"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>caseString</span> <span class='hs-str'>"Oct"</span> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-conid'>October</span>
<a name="line-307"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>caseString</span> <span class='hs-str'>"Nov"</span> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-conid'>November</span>
<a name="line-308"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>caseString</span> <span class='hs-str'>"Dec"</span> <span class='hs-varop'>>></span> <span class='hs-varid'>return</span> <span class='hs-conid'>December</span>
<a name="line-309"></a> <span class='hs-keyglyph'>]</span>
<a name="line-310"></a>
<a name="line-311"></a><a name="day"></a><span class='hs-definition'>day</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CharParser</span> <span class='hs-varid'>a</span> <span class='hs-conid'>Int</span>
<a name="line-312"></a><span class='hs-definition'>day</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>manyNtoM</span> <span class='hs-num'>1</span> <span class='hs-num'>2</span> <span class='hs-varid'>digit</span>
<a name="line-313"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>read</span> <span class='hs-varid'>d</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span><span class='hs-layout'>)</span>
<a name="line-314"></a>
<a name="line-315"></a><a name="hour"></a><span class='hs-definition'>hour</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CharParser</span> <span class='hs-varid'>a</span> <span class='hs-conid'>Int</span>
<a name="line-316"></a><span class='hs-definition'>hour</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>twoDigits</span>
<a name="line-317"></a>
<a name="line-318"></a><a name="minute"></a><span class='hs-definition'>minute</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CharParser</span> <span class='hs-varid'>a</span> <span class='hs-conid'>Int</span>
<a name="line-319"></a><span class='hs-definition'>minute</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>twoDigits</span>
<a name="line-320"></a>
<a name="line-321"></a><a name="second"></a><span class='hs-definition'>second</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CharParser</span> <span class='hs-varid'>a</span> <span class='hs-conid'>Int</span>
<a name="line-322"></a><span class='hs-definition'>second</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>twoDigits</span>
<a name="line-323"></a>
<a name="line-324"></a><a name="zone"></a><span class='hs-definition'>zone</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CharParser</span> <span class='hs-varid'>a</span> <span class='hs-conid'>Int</span>
<a name="line-325"></a><span class='hs-definition'>zone</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>choice</span>
<a name="line-326"></a> <span class='hs-keyglyph'>[</span> <span class='hs-keyword'>do</span> <span class='hs-layout'>{</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>char</span> <span class='hs-chr'>'+'</span><span class='hs-layout'>;</span> <span class='hs-varid'>h</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>hour</span><span class='hs-layout'>;</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>minute</span><span class='hs-layout'>;</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>h</span><span class='hs-varop'>*</span><span class='hs-num'>60</span><span class='hs-layout'>)</span><span class='hs-varop'>+</span><span class='hs-varid'>m</span><span class='hs-layout'>)</span><span class='hs-varop'>*</span><span class='hs-num'>60</span><span class='hs-layout'>)</span> <span class='hs-layout'>}</span>
<a name="line-327"></a> <span class='hs-layout'>,</span> <span class='hs-keyword'>do</span> <span class='hs-layout'>{</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>char</span> <span class='hs-chr'>'-'</span><span class='hs-layout'>;</span> <span class='hs-varid'>h</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>hour</span><span class='hs-layout'>;</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>minute</span><span class='hs-layout'>;</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varid'>h</span><span class='hs-varop'>*</span><span class='hs-num'>60</span><span class='hs-layout'>)</span><span class='hs-varop'>+</span><span class='hs-varid'>m</span><span class='hs-layout'>)</span><span class='hs-varop'>*</span><span class='hs-num'>60</span><span class='hs-layout'>)</span> <span class='hs-layout'>}</span>
<a name="line-328"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>mkZone</span> <span class='hs-str'>"UTC"</span> <span class='hs-num'>0</span>
<a name="line-329"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>mkZone</span> <span class='hs-str'>"UT"</span> <span class='hs-num'>0</span>
<a name="line-330"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>mkZone</span> <span class='hs-str'>"GMT"</span> <span class='hs-num'>0</span>
<a name="line-331"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>mkZone</span> <span class='hs-str'>"EST"</span> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-num'>5</span><span class='hs-layout'>)</span>
<a name="line-332"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>mkZone</span> <span class='hs-str'>"EDT"</span> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-num'>4</span><span class='hs-layout'>)</span>
<a name="line-333"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>mkZone</span> <span class='hs-str'>"CST"</span> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-num'>6</span><span class='hs-layout'>)</span>
<a name="line-334"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>mkZone</span> <span class='hs-str'>"CDT"</span> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-num'>5</span><span class='hs-layout'>)</span>
<a name="line-335"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>mkZone</span> <span class='hs-str'>"MST"</span> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-num'>7</span><span class='hs-layout'>)</span>
<a name="line-336"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>mkZone</span> <span class='hs-str'>"MDT"</span> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-num'>6</span><span class='hs-layout'>)</span>
<a name="line-337"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>mkZone</span> <span class='hs-str'>"PST"</span> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-num'>8</span><span class='hs-layout'>)</span>
<a name="line-338"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>mkZone</span> <span class='hs-str'>"PDT"</span> <span class='hs-layout'>(</span><span class='hs-comment'>-</span><span class='hs-num'>7</span><span class='hs-layout'>)</span>
<a name="line-339"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>mkZone</span> <span class='hs-str'>"CEST"</span> <span class='hs-num'>2</span>
<a name="line-340"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>mkZone</span> <span class='hs-str'>"EEST"</span> <span class='hs-num'>3</span>
<a name="line-341"></a> <span class='hs-comment'>-- if we don't understand it, just give a GMT answer...</span>
<a name="line-342"></a> <span class='hs-layout'>,</span> <span class='hs-keyword'>do</span> <span class='hs-layout'>{</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>manyTill</span> <span class='hs-layout'>(</span><span class='hs-varid'>oneOf</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>[</span><span class='hs-chr'>'a'</span><span class='hs-keyglyph'>..</span><span class='hs-chr'>'z'</span><span class='hs-keyglyph'>]</span><span class='hs-varop'>++</span><span class='hs-keyglyph'>[</span><span class='hs-chr'>'A'</span><span class='hs-keyglyph'>..</span><span class='hs-chr'>'Z'</span><span class='hs-keyglyph'>]</span><span class='hs-varop'>++</span><span class='hs-keyglyph'>[</span><span class='hs-chr'>' '</span><span class='hs-keyglyph'>]</span><span class='hs-layout'>)</span>
<a name="line-343"></a> <span class='hs-layout'>(</span><span class='hs-varid'>lookAhead</span> <span class='hs-varid'>space_digit</span><span class='hs-layout'>)</span><span class='hs-layout'>;</span>
<a name="line-344"></a> <span class='hs-varid'>return</span> <span class='hs-num'>0</span> <span class='hs-layout'>}</span>
<a name="line-345"></a> <span class='hs-keyglyph'>]</span>
<a name="line-346"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>mkZone</span> <span class='hs-varid'>n</span> <span class='hs-varid'>o</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>try</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span> <span class='hs-layout'>{</span> <span class='hs-varid'>caseString</span> <span class='hs-varid'>n</span><span class='hs-layout'>;</span> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>o</span><span class='hs-varop'>*</span><span class='hs-num'>60</span><span class='hs-varop'>*</span><span class='hs-num'>60</span><span class='hs-layout'>)</span> <span class='hs-layout'>}</span>
<a name="line-347"></a> <span class='hs-varid'>space_digit</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>try</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>do</span> <span class='hs-layout'>{</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>char</span> <span class='hs-chr'>' '</span><span class='hs-layout'>;</span> <span class='hs-varid'>oneOf</span> <span class='hs-keyglyph'>[</span><span class='hs-chr'>'0'</span><span class='hs-keyglyph'>..</span><span class='hs-chr'>'9'</span><span class='hs-keyglyph'>]</span> <span class='hs-layout'>}</span>
<a name="line-348"></a>
<a name="line-349"></a><a name="nullCalendar"></a><span class='hs-definition'>nullCalendar</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CalendarTime</span>
<a name="line-350"></a><span class='hs-definition'>nullCalendar</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>CalendarTime</span> <span class='hs-num'>0</span> <span class='hs-conid'>January</span> <span class='hs-num'>0</span> <span class='hs-num'>0</span> <span class='hs-num'>0</span> <span class='hs-num'>0</span> <span class='hs-num'>1</span> <span class='hs-conid'>Sunday</span> <span class='hs-num'>0</span> <span class='hs-str'>""</span> <span class='hs-num'>0</span> <span class='hs-conid'>False</span>
</pre></body>
</html>
