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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<head>
<!-- Generated by HsColour, http://code.haskell.org/~malcolm/hscolour/ -->
<title>Hledger/Utils.hs</title>
<link type='text/css' rel='stylesheet' href='hscolour.css' />
</head>
<body>
<pre><a name="line-1"></a><span class='hs-comment'>{-# LANGUAGE FlexibleContexts #-}</span>
<a name="line-2"></a><span class='hs-comment'>{-|
<a name="line-3"></a>
<a name="line-4"></a>Standard imports and utilities which are useful everywhere, or needed low
<a name="line-5"></a>in the module hierarchy. This is the bottom of hledger's module graph.
<a name="line-6"></a>
<a name="line-7"></a>-}</span>
<a name="line-8"></a>
<a name="line-9"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Hledger</span><span class='hs-varop'>.</span><span class='hs-conid'>Utils</span> <span class='hs-layout'>(</span><span class='hs-comment'>---- provide these frequently used modules - or not, for clearer api:</span>
<a name="line-10"></a>                          <span class='hs-comment'>-- module Control.Monad,</span>
<a name="line-11"></a>                          <span class='hs-comment'>-- module Data.List,</span>
<a name="line-12"></a>                          <span class='hs-comment'>-- module Data.Maybe,</span>
<a name="line-13"></a>                          <span class='hs-comment'>-- module Data.Time.Calendar,</span>
<a name="line-14"></a>                          <span class='hs-comment'>-- module Data.Time.Clock,</span>
<a name="line-15"></a>                          <span class='hs-comment'>-- module Data.Time.LocalTime,</span>
<a name="line-16"></a>                          <span class='hs-comment'>-- module Data.Tree,</span>
<a name="line-17"></a>                          <span class='hs-comment'>-- module Text.RegexPR,</span>
<a name="line-18"></a>                          <span class='hs-comment'>-- module Test.HUnit,</span>
<a name="line-19"></a>                          <span class='hs-comment'>-- module Text.Printf,</span>
<a name="line-20"></a>                          <span class='hs-comment'>---- all of this one:</span>
<a name="line-21"></a>                          <span class='hs-keyword'>module</span> <span class='hs-conid'>Hledger</span><span class='hs-varop'>.</span><span class='hs-conid'>Utils</span><span class='hs-layout'>,</span>
<a name="line-22"></a>                          <span class='hs-keyword'>module</span> <span class='hs-conid'>Hledger</span><span class='hs-varop'>.</span><span class='hs-conid'>Utils</span><span class='hs-varop'>.</span><span class='hs-conid'>Debug</span><span class='hs-layout'>,</span>
<a name="line-23"></a>                          <span class='hs-keyword'>module</span> <span class='hs-conid'>Hledger</span><span class='hs-varop'>.</span><span class='hs-conid'>Utils</span><span class='hs-varop'>.</span><span class='hs-conid'>Regex</span><span class='hs-layout'>,</span>
<a name="line-24"></a>                          <span class='hs-comment'>-- Debug.Trace.trace,</span>
<a name="line-25"></a>                          <span class='hs-comment'>-- module Data.PPrint,</span>
<a name="line-26"></a>                          <span class='hs-comment'>-- module Hledger.Utils.UTF8IOCompat</span>
<a name="line-27"></a>                          <span class='hs-conid'>SystemString</span><span class='hs-layout'>,</span><span class='hs-varid'>fromSystemString</span><span class='hs-layout'>,</span><span class='hs-varid'>toSystemString</span><span class='hs-layout'>,</span><span class='hs-varid'>error'</span><span class='hs-layout'>,</span><span class='hs-varid'>userError'</span><span class='hs-layout'>,</span>
<a name="line-28"></a>                          <span class='hs-comment'>-- the rest need to be done in each module I think</span>
<a name="line-29"></a>                          <span class='hs-layout'>)</span>
<a name="line-30"></a><span class='hs-keyword'>where</span>
<a name="line-31"></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>
<a name="line-32"></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-varop'>.</span><span class='hs-conid'>IO</span><span class='hs-varop'>.</span><span class='hs-conid'>Class</span> <span class='hs-layout'>(</span><span class='hs-conid'>MonadIO</span><span class='hs-layout'>,</span> <span class='hs-varid'>liftIO</span><span class='hs-layout'>)</span>
<a name="line-33"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Char</span>
<a name="line-34"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span>
<a name="line-35"></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'>Map</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>M</span>
<a name="line-36"></a><span class='hs-comment'>-- import Data.Maybe</span>
<a name="line-37"></a><span class='hs-comment'>-- import Data.PPrint</span>
<a name="line-38"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Time</span><span class='hs-varop'>.</span><span class='hs-conid'>Clock</span>
<a name="line-39"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Time</span><span class='hs-varop'>.</span><span class='hs-conid'>LocalTime</span>
<a name="line-40"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Tree</span>
<a name="line-41"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>Directory</span> <span class='hs-layout'>(</span><span class='hs-varid'>getHomeDirectory</span><span class='hs-layout'>)</span>
<a name="line-42"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>FilePath</span><span class='hs-layout'>(</span><span class='hs-layout'>(</span><span class='hs-varop'>&lt;/&gt;</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-varid'>isRelative</span><span class='hs-layout'>)</span>
<a name="line-43"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>System</span><span class='hs-varop'>.</span><span class='hs-conid'>IO</span>
<a name="line-44"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Test</span><span class='hs-varop'>.</span><span class='hs-conid'>HUnit</span>
<a name="line-45"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Parsec</span>
<a name="line-46"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Printf</span>
<a name="line-47"></a><span class='hs-comment'>-- import qualified Data.Map as Map</span>
<a name="line-48"></a>
<a name="line-49"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Hledger</span><span class='hs-varop'>.</span><span class='hs-conid'>Utils</span><span class='hs-varop'>.</span><span class='hs-conid'>Debug</span>
<a name="line-50"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Hledger</span><span class='hs-varop'>.</span><span class='hs-conid'>Utils</span><span class='hs-varop'>.</span><span class='hs-conid'>Regex</span>
<a name="line-51"></a><span class='hs-comment'>-- import Prelude hiding (readFile,writeFile,appendFile,getContents,putStr,putStrLn)</span>
<a name="line-52"></a><span class='hs-comment'>-- import Hledger.Utils.UTF8IOCompat   (readFile,writeFile,appendFile,getContents,putStr,putStrLn)</span>
<a name="line-53"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Hledger</span><span class='hs-varop'>.</span><span class='hs-conid'>Utils</span><span class='hs-varop'>.</span><span class='hs-conid'>UTF8IOCompat</span> <span class='hs-layout'>(</span><span class='hs-conid'>SystemString</span><span class='hs-layout'>,</span><span class='hs-varid'>fromSystemString</span><span class='hs-layout'>,</span><span class='hs-varid'>toSystemString</span><span class='hs-layout'>,</span><span class='hs-varid'>error'</span><span class='hs-layout'>,</span><span class='hs-varid'>userError'</span><span class='hs-layout'>)</span>
<a name="line-54"></a>
<a name="line-55"></a><span class='hs-comment'>-- strings</span>
<a name="line-56"></a>
<a name="line-57"></a><a name="lowercase"></a><span class='hs-definition'>lowercase</span><span class='hs-layout'>,</span> <span class='hs-varid'>uppercase</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span>
<a name="line-58"></a><span class='hs-definition'>lowercase</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-varid'>toLower</span>
<a name="line-59"></a><a name="uppercase"></a><span class='hs-definition'>uppercase</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-varid'>toUpper</span>
<a name="line-60"></a>
<a name="line-61"></a><a name="strip"></a><span class='hs-comment'>-- | Remove leading and trailing whitespace.</span>
<a name="line-62"></a><span class='hs-definition'>strip</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span>
<a name="line-63"></a><span class='hs-definition'>strip</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>lstrip</span> <span class='hs-varop'>.</span> <span class='hs-varid'>rstrip</span>
<a name="line-64"></a>
<a name="line-65"></a><a name="lstrip"></a><span class='hs-comment'>-- | Remove leading whitespace.</span>
<a name="line-66"></a><span class='hs-definition'>lstrip</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span>
<a name="line-67"></a><span class='hs-definition'>lstrip</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>dropWhile</span> <span class='hs-layout'>(</span><span class='hs-varop'>`elem`</span> <span class='hs-str'>" \t"</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span> <span class='hs-comment'>-- XXX isSpace ?</span>
<a name="line-68"></a>
<a name="line-69"></a><a name="rstrip"></a><span class='hs-comment'>-- | Remove trailing whitespace.</span>
<a name="line-70"></a><span class='hs-definition'>rstrip</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span>
<a name="line-71"></a><span class='hs-definition'>rstrip</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>reverse</span> <span class='hs-varop'>.</span> <span class='hs-varid'>lstrip</span> <span class='hs-varop'>.</span> <span class='hs-varid'>reverse</span>
<a name="line-72"></a>
<a name="line-73"></a><a name="chomp"></a><span class='hs-comment'>-- | Remove trailing newlines/carriage returns.</span>
<a name="line-74"></a><span class='hs-definition'>chomp</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span>
<a name="line-75"></a><span class='hs-definition'>chomp</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>reverse</span> <span class='hs-varop'>.</span> <span class='hs-varid'>dropWhile</span> <span class='hs-layout'>(</span><span class='hs-varop'>`elem`</span> <span class='hs-str'>"\r\n"</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>reverse</span>
<a name="line-76"></a>
<a name="line-77"></a><a name="stripbrackets"></a><span class='hs-definition'>stripbrackets</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span>
<a name="line-78"></a><span class='hs-definition'>stripbrackets</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>dropWhile</span> <span class='hs-layout'>(</span><span class='hs-varop'>`elem`</span> <span class='hs-str'>"(["</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>reverse</span> <span class='hs-varop'>.</span> <span class='hs-varid'>dropWhile</span> <span class='hs-layout'>(</span><span class='hs-varop'>`elem`</span> <span class='hs-str'>"])"</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>reverse</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span>
<a name="line-79"></a>
<a name="line-80"></a><a name="elideLeft"></a><span class='hs-definition'>elideLeft</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span>
<a name="line-81"></a><span class='hs-definition'>elideLeft</span> <span class='hs-varid'>width</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span>
<a name="line-82"></a>    <span class='hs-keyword'>if</span> <span class='hs-varid'>length</span> <span class='hs-varid'>s</span> <span class='hs-varop'>&gt;</span> <span class='hs-varid'>width</span> <span class='hs-keyword'>then</span> <span class='hs-str'>".."</span> <span class='hs-varop'>++</span> <span class='hs-varid'>reverse</span> <span class='hs-layout'>(</span><span class='hs-varid'>take</span> <span class='hs-layout'>(</span><span class='hs-varid'>width</span> <span class='hs-comment'>-</span> <span class='hs-num'>2</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>reverse</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-keyword'>else</span> <span class='hs-varid'>s</span>
<a name="line-83"></a>
<a name="line-84"></a><a name="elideRight"></a><span class='hs-definition'>elideRight</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span>
<a name="line-85"></a><span class='hs-definition'>elideRight</span> <span class='hs-varid'>width</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span>
<a name="line-86"></a>    <span class='hs-keyword'>if</span> <span class='hs-varid'>length</span> <span class='hs-varid'>s</span> <span class='hs-varop'>&gt;</span> <span class='hs-varid'>width</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>take</span> <span class='hs-layout'>(</span><span class='hs-varid'>width</span> <span class='hs-comment'>-</span> <span class='hs-num'>2</span><span class='hs-layout'>)</span> <span class='hs-varid'>s</span> <span class='hs-varop'>++</span> <span class='hs-str'>".."</span> <span class='hs-keyword'>else</span> <span class='hs-varid'>s</span>
<a name="line-87"></a>
<a name="line-88"></a><a name="underline"></a><span class='hs-definition'>underline</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span>
<a name="line-89"></a><span class='hs-definition'>underline</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>s'</span> <span class='hs-varop'>++</span> <span class='hs-varid'>replicate</span> <span class='hs-layout'>(</span><span class='hs-varid'>length</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-chr'>'-'</span> <span class='hs-varop'>++</span> <span class='hs-str'>"\n"</span>
<a name="line-90"></a>    <span class='hs-keyword'>where</span> <span class='hs-varid'>s'</span>
<a name="line-91"></a>            <span class='hs-keyglyph'>|</span> <span class='hs-varid'>last</span> <span class='hs-varid'>s</span> <span class='hs-varop'>==</span> <span class='hs-chr'>'\n'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>s</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'>s</span> <span class='hs-varop'>++</span> <span class='hs-str'>"\n"</span>
<a name="line-93"></a>
<a name="line-94"></a><a name="quoteIfSpaced"></a><span class='hs-comment'>-- | Wrap a string in double quotes, and \-prefix any embedded single</span>
<a name="line-95"></a><span class='hs-comment'>-- quotes, if it contains whitespace and is not already single- or</span>
<a name="line-96"></a><span class='hs-comment'>-- double-quoted.</span>
<a name="line-97"></a><span class='hs-definition'>quoteIfSpaced</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span>
<a name="line-98"></a><span class='hs-definition'>quoteIfSpaced</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>isSingleQuoted</span> <span class='hs-varid'>s</span> <span class='hs-varop'>||</span> <span class='hs-varid'>isDoubleQuoted</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>s</span>
<a name="line-99"></a>                <span class='hs-keyglyph'>|</span> <span class='hs-varid'>not</span> <span class='hs-varop'>$</span> <span class='hs-varid'>any</span> <span class='hs-layout'>(</span><span class='hs-varop'>`elem`</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-varid'>whitespacechars</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>s</span>
<a name="line-100"></a>                <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"'"</span><span class='hs-varop'>++</span><span class='hs-varid'>escapeSingleQuotes</span> <span class='hs-varid'>s</span><span class='hs-varop'>++</span><span class='hs-str'>"'"</span>
<a name="line-101"></a>
<a name="line-102"></a><a name="quoteIfNeeded"></a><span class='hs-comment'>-- | Double-quote this string if it contains whitespace, single quotes</span>
<a name="line-103"></a><span class='hs-comment'>-- or double-quotes, escaping the quotes as needed.</span>
<a name="line-104"></a><span class='hs-definition'>quoteIfNeeded</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span>
<a name="line-105"></a><span class='hs-definition'>quoteIfNeeded</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>any</span> <span class='hs-layout'>(</span><span class='hs-varop'>`elem`</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>quotechars</span><span class='hs-varop'>++</span><span class='hs-varid'>whitespacechars</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"\""</span> <span class='hs-varop'>++</span> <span class='hs-varid'>escapeDoubleQuotes</span> <span class='hs-varid'>s</span> <span class='hs-varop'>++</span> <span class='hs-str'>"\""</span>
<a name="line-106"></a>                <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>s</span>
<a name="line-107"></a>
<a name="line-108"></a><a name="singleQuoteIfNeeded"></a><span class='hs-comment'>-- | Single-quote this string if it contains whitespace or double-quotes.</span>
<a name="line-109"></a><span class='hs-comment'>-- No good for strings containing single quotes.</span>
<a name="line-110"></a><span class='hs-definition'>singleQuoteIfNeeded</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span>
<a name="line-111"></a><span class='hs-definition'>singleQuoteIfNeeded</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>any</span> <span class='hs-layout'>(</span><span class='hs-varop'>`elem`</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span> <span class='hs-varid'>whitespacechars</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"'"</span><span class='hs-varop'>++</span><span class='hs-varid'>s</span><span class='hs-varop'>++</span><span class='hs-str'>"'"</span>
<a name="line-112"></a>                      <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>s</span>
<a name="line-113"></a>
<a name="line-114"></a><a name="quotechars"></a><span class='hs-definition'>quotechars</span><span class='hs-layout'>,</span> <span class='hs-varid'>whitespacechars</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Char</span><span class='hs-keyglyph'>]</span>
<a name="line-115"></a><span class='hs-definition'>quotechars</span>      <span class='hs-keyglyph'>=</span> <span class='hs-str'>"'\""</span>
<a name="line-116"></a><a name="whitespacechars"></a><span class='hs-definition'>whitespacechars</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>" \t\n\r"</span>
<a name="line-117"></a>
<a name="line-118"></a><a name="escapeDoubleQuotes"></a><span class='hs-definition'>escapeDoubleQuotes</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span>
<a name="line-119"></a><span class='hs-definition'>escapeDoubleQuotes</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>regexReplace</span> <span class='hs-str'>"\""</span> <span class='hs-str'>"\""</span>
<a name="line-120"></a>
<a name="line-121"></a><a name="escapeSingleQuotes"></a><span class='hs-definition'>escapeSingleQuotes</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span>
<a name="line-122"></a><span class='hs-definition'>escapeSingleQuotes</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>regexReplace</span> <span class='hs-str'>"'"</span> <span class='hs-str'>"\'"</span>
<a name="line-123"></a>
<a name="line-124"></a><a name="escapeQuotes"></a><span class='hs-definition'>escapeQuotes</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span>
<a name="line-125"></a><span class='hs-definition'>escapeQuotes</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>regexReplace</span> <span class='hs-str'>"([\"'])"</span> <span class='hs-str'>"\\1"</span>
<a name="line-126"></a>
<a name="line-127"></a><a name="words'"></a><span class='hs-comment'>-- | Quote-aware version of words - don't split on spaces which are inside quotes.</span>
<a name="line-128"></a><span class='hs-comment'>-- NB correctly handles "a'b" but not "''a''". Can raise an error if parsing fails.</span>
<a name="line-129"></a><span class='hs-definition'>words'</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>String</span><span class='hs-keyglyph'>]</span>
<a name="line-130"></a><span class='hs-definition'>words'</span> <span class='hs-str'>""</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-131"></a><span class='hs-definition'>words'</span> <span class='hs-varid'>s</span>  <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-varid'>stripquotes</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fromparse</span> <span class='hs-varop'>$</span> <span class='hs-varid'>parsewith</span> <span class='hs-varid'>p</span> <span class='hs-varid'>s</span>
<a name="line-132"></a>    <span class='hs-keyword'>where</span>
<a name="line-133"></a>      <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>ss</span> <span class='hs-keyglyph'>&lt;-</span> <span class='hs-layout'>(</span><span class='hs-varid'>singleQuotedPattern</span> <span class='hs-varop'>&lt;|&gt;</span> <span class='hs-varid'>doubleQuotedPattern</span> <span class='hs-varop'>&lt;|&gt;</span> <span class='hs-varid'>pattern</span><span class='hs-layout'>)</span> <span class='hs-varop'>`sepBy`</span> <span class='hs-varid'>many1</span> <span class='hs-varid'>spacenonewline</span>
<a name="line-134"></a>             <span class='hs-comment'>-- eof</span>
<a name="line-135"></a>             <span class='hs-varid'>return</span> <span class='hs-varid'>ss</span>
<a name="line-136"></a>      <span class='hs-varid'>pattern</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>many</span> <span class='hs-layout'>(</span><span class='hs-varid'>noneOf</span> <span class='hs-varid'>whitespacechars</span><span class='hs-layout'>)</span>
<a name="line-137"></a>      <span class='hs-varid'>singleQuotedPattern</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>between</span> <span class='hs-layout'>(</span><span class='hs-varid'>char</span> <span class='hs-chr'>'\''</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>char</span> <span class='hs-chr'>'\''</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>many</span> <span class='hs-varop'>$</span> <span class='hs-varid'>noneOf</span> <span class='hs-str'>"'"</span><span class='hs-layout'>)</span>
<a name="line-138"></a>      <span class='hs-varid'>doubleQuotedPattern</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>between</span> <span class='hs-layout'>(</span><span class='hs-varid'>char</span> <span class='hs-chr'>'"'</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>char</span> <span class='hs-chr'>'"'</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>many</span> <span class='hs-varop'>$</span> <span class='hs-varid'>noneOf</span> <span class='hs-str'>"\""</span><span class='hs-layout'>)</span>
<a name="line-139"></a>
<a name="line-140"></a><a name="unwords'"></a><span class='hs-comment'>-- | Quote-aware version of unwords - single-quote strings which contain whitespace</span>
<a name="line-141"></a><span class='hs-definition'>unwords'</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>String</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span>
<a name="line-142"></a><span class='hs-definition'>unwords'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unwords</span> <span class='hs-varop'>.</span> <span class='hs-varid'>map</span> <span class='hs-varid'>quoteIfNeeded</span>
<a name="line-143"></a>
<a name="line-144"></a><a name="stripquotes"></a><span class='hs-comment'>-- | Strip one matching pair of single or double quotes on the ends of a string.</span>
<a name="line-145"></a><span class='hs-definition'>stripquotes</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span>
<a name="line-146"></a><span class='hs-definition'>stripquotes</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>isSingleQuoted</span> <span class='hs-varid'>s</span> <span class='hs-varop'>||</span> <span class='hs-varid'>isDoubleQuoted</span> <span class='hs-varid'>s</span> <span class='hs-keyword'>then</span> <span class='hs-varid'>init</span> <span class='hs-varop'>$</span> <span class='hs-varid'>tail</span> <span class='hs-varid'>s</span> <span class='hs-keyword'>else</span> <span class='hs-varid'>s</span>
<a name="line-147"></a>
<a name="line-148"></a><a name="isSingleQuoted"></a><span class='hs-definition'>isSingleQuoted</span> <span class='hs-varid'>s</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-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>head</span> <span class='hs-varid'>s</span> <span class='hs-varop'>==</span> <span class='hs-chr'>'\''</span> <span class='hs-varop'>&amp;&amp;</span> <span class='hs-varid'>last</span> <span class='hs-varid'>s</span> <span class='hs-varop'>==</span> <span class='hs-chr'>'\''</span>
<a name="line-149"></a><span class='hs-definition'>isSingleQuoted</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span>
<a name="line-150"></a>
<a name="line-151"></a><a name="isDoubleQuoted"></a><span class='hs-definition'>isDoubleQuoted</span> <span class='hs-varid'>s</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-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>head</span> <span class='hs-varid'>s</span> <span class='hs-varop'>==</span> <span class='hs-chr'>'"'</span> <span class='hs-varop'>&amp;&amp;</span> <span class='hs-varid'>last</span> <span class='hs-varid'>s</span> <span class='hs-varop'>==</span> <span class='hs-chr'>'"'</span>
<a name="line-152"></a><span class='hs-definition'>isDoubleQuoted</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span>
<a name="line-153"></a>
<a name="line-154"></a><a name="unbracket"></a><span class='hs-definition'>unbracket</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span>
<a name="line-155"></a><span class='hs-definition'>unbracket</span> <span class='hs-varid'>s</span>
<a name="line-156"></a>    <span class='hs-keyglyph'>|</span> <span class='hs-layout'>(</span><span class='hs-varid'>head</span> <span class='hs-varid'>s</span> <span class='hs-varop'>==</span> <span class='hs-chr'>'['</span> <span class='hs-varop'>&amp;&amp;</span> <span class='hs-varid'>last</span> <span class='hs-varid'>s</span> <span class='hs-varop'>==</span> <span class='hs-chr'>']'</span><span class='hs-layout'>)</span> <span class='hs-varop'>||</span> <span class='hs-layout'>(</span><span class='hs-varid'>head</span> <span class='hs-varid'>s</span> <span class='hs-varop'>==</span> <span class='hs-chr'>'('</span> <span class='hs-varop'>&amp;&amp;</span> <span class='hs-varid'>last</span> <span class='hs-varid'>s</span> <span class='hs-varop'>==</span> <span class='hs-chr'>')'</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>init</span> <span class='hs-varop'>$</span> <span class='hs-varid'>tail</span> <span class='hs-varid'>s</span>
<a name="line-157"></a>    <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>s</span>
<a name="line-158"></a>
<a name="line-159"></a><a name="concatTopPadded"></a><span class='hs-comment'>-- | Join multi-line strings as side-by-side rectangular strings of the same height, top-padded.</span>
<a name="line-160"></a><span class='hs-definition'>concatTopPadded</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>String</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span>
<a name="line-161"></a><span class='hs-definition'>concatTopPadded</span> <span class='hs-varid'>strs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>intercalate</span> <span class='hs-str'>"\n"</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>concat</span> <span class='hs-varop'>$</span> <span class='hs-varid'>transpose</span> <span class='hs-varid'>padded</span>
<a name="line-162"></a>    <span class='hs-keyword'>where</span>
<a name="line-163"></a>      <span class='hs-varid'>lss</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-varid'>lines</span> <span class='hs-varid'>strs</span>
<a name="line-164"></a>      <span class='hs-varid'>h</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>maximum</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>length</span> <span class='hs-varid'>lss</span>
<a name="line-165"></a>      <span class='hs-varid'>ypad</span> <span class='hs-varid'>ls</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>replicate</span> <span class='hs-layout'>(</span><span class='hs-varid'>difforzero</span> <span class='hs-varid'>h</span> <span class='hs-layout'>(</span><span class='hs-varid'>length</span> <span class='hs-varid'>ls</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-str'>""</span> <span class='hs-varop'>++</span> <span class='hs-varid'>ls</span>
<a name="line-166"></a>      <span class='hs-varid'>xpad</span> <span class='hs-varid'>ls</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>padleft</span> <span class='hs-varid'>w</span><span class='hs-layout'>)</span> <span class='hs-varid'>ls</span> <span class='hs-keyword'>where</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>null</span> <span class='hs-varid'>ls</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0</span>
<a name="line-167"></a>                                           <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>maximum</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>length</span> <span class='hs-varid'>ls</span>
<a name="line-168"></a>      <span class='hs-varid'>padded</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>xpad</span> <span class='hs-varop'>.</span> <span class='hs-varid'>ypad</span><span class='hs-layout'>)</span> <span class='hs-varid'>lss</span>
<a name="line-169"></a>
<a name="line-170"></a><a name="concatBottomPadded"></a><span class='hs-comment'>-- | Join multi-line strings as side-by-side rectangular strings of the same height, bottom-padded.</span>
<a name="line-171"></a><span class='hs-definition'>concatBottomPadded</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>String</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span>
<a name="line-172"></a><span class='hs-definition'>concatBottomPadded</span> <span class='hs-varid'>strs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>intercalate</span> <span class='hs-str'>"\n"</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>concat</span> <span class='hs-varop'>$</span> <span class='hs-varid'>transpose</span> <span class='hs-varid'>padded</span>
<a name="line-173"></a>    <span class='hs-keyword'>where</span>
<a name="line-174"></a>      <span class='hs-varid'>lss</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-varid'>lines</span> <span class='hs-varid'>strs</span>
<a name="line-175"></a>      <span class='hs-varid'>h</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>maximum</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>length</span> <span class='hs-varid'>lss</span>
<a name="line-176"></a>      <span class='hs-varid'>ypad</span> <span class='hs-varid'>ls</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ls</span> <span class='hs-varop'>++</span> <span class='hs-varid'>replicate</span> <span class='hs-layout'>(</span><span class='hs-varid'>difforzero</span> <span class='hs-varid'>h</span> <span class='hs-layout'>(</span><span class='hs-varid'>length</span> <span class='hs-varid'>ls</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-str'>""</span>
<a name="line-177"></a>      <span class='hs-varid'>xpad</span> <span class='hs-varid'>ls</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>padright</span> <span class='hs-varid'>w</span><span class='hs-layout'>)</span> <span class='hs-varid'>ls</span> <span class='hs-keyword'>where</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>null</span> <span class='hs-varid'>ls</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0</span>
<a name="line-178"></a>                                            <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>maximum</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>length</span> <span class='hs-varid'>ls</span>
<a name="line-179"></a>      <span class='hs-varid'>padded</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>xpad</span> <span class='hs-varop'>.</span> <span class='hs-varid'>ypad</span><span class='hs-layout'>)</span> <span class='hs-varid'>lss</span>
<a name="line-180"></a>
<a name="line-181"></a><a name="vConcatRightAligned"></a><span class='hs-comment'>-- | Compose strings vertically and right-aligned.</span>
<a name="line-182"></a><span class='hs-definition'>vConcatRightAligned</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>String</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span>
<a name="line-183"></a><span class='hs-definition'>vConcatRightAligned</span> <span class='hs-varid'>ss</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>intercalate</span> <span class='hs-str'>"\n"</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>showfixedwidth</span> <span class='hs-varid'>ss</span>
<a name="line-184"></a>    <span class='hs-keyword'>where</span>
<a name="line-185"></a>      <span class='hs-varid'>showfixedwidth</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>printf</span> <span class='hs-layout'>(</span><span class='hs-varid'>printf</span> <span class='hs-str'>"%%%ds"</span> <span class='hs-varid'>width</span><span class='hs-layout'>)</span>
<a name="line-186"></a>      <span class='hs-varid'>width</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>maximum</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>length</span> <span class='hs-varid'>ss</span>
<a name="line-187"></a>
<a name="line-188"></a><a name="padtop"></a><span class='hs-comment'>-- | Convert a multi-line string to a rectangular string top-padded to the specified height.</span>
<a name="line-189"></a><span class='hs-definition'>padtop</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span>
<a name="line-190"></a><span class='hs-definition'>padtop</span> <span class='hs-varid'>h</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>intercalate</span> <span class='hs-str'>"\n"</span> <span class='hs-varid'>xpadded</span>
<a name="line-191"></a>    <span class='hs-keyword'>where</span>
<a name="line-192"></a>      <span class='hs-varid'>ls</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>lines</span> <span class='hs-varid'>s</span>
<a name="line-193"></a>      <span class='hs-varid'>sh</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>length</span> <span class='hs-varid'>ls</span>
<a name="line-194"></a>      <span class='hs-varid'>sw</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>null</span> <span class='hs-varid'>ls</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0</span>
<a name="line-195"></a>         <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>maximum</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>length</span> <span class='hs-varid'>ls</span>
<a name="line-196"></a>      <span class='hs-varid'>ypadded</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>replicate</span> <span class='hs-layout'>(</span><span class='hs-varid'>difforzero</span> <span class='hs-varid'>h</span> <span class='hs-varid'>sh</span><span class='hs-layout'>)</span> <span class='hs-str'>""</span> <span class='hs-varop'>++</span> <span class='hs-varid'>ls</span>
<a name="line-197"></a>      <span class='hs-varid'>xpadded</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>padleft</span> <span class='hs-varid'>sw</span><span class='hs-layout'>)</span> <span class='hs-varid'>ypadded</span>
<a name="line-198"></a>
<a name="line-199"></a><a name="padbottom"></a><span class='hs-comment'>-- | Convert a multi-line string to a rectangular string bottom-padded to the specified height.</span>
<a name="line-200"></a><span class='hs-definition'>padbottom</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span>
<a name="line-201"></a><span class='hs-definition'>padbottom</span> <span class='hs-varid'>h</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>intercalate</span> <span class='hs-str'>"\n"</span> <span class='hs-varid'>xpadded</span>
<a name="line-202"></a>    <span class='hs-keyword'>where</span>
<a name="line-203"></a>      <span class='hs-varid'>ls</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>lines</span> <span class='hs-varid'>s</span>
<a name="line-204"></a>      <span class='hs-varid'>sh</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>length</span> <span class='hs-varid'>ls</span>
<a name="line-205"></a>      <span class='hs-varid'>sw</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>null</span> <span class='hs-varid'>ls</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>0</span>
<a name="line-206"></a>         <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>maximum</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-varid'>length</span> <span class='hs-varid'>ls</span>
<a name="line-207"></a>      <span class='hs-varid'>ypadded</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>ls</span> <span class='hs-varop'>++</span> <span class='hs-varid'>replicate</span> <span class='hs-layout'>(</span><span class='hs-varid'>difforzero</span> <span class='hs-varid'>h</span> <span class='hs-varid'>sh</span><span class='hs-layout'>)</span> <span class='hs-str'>""</span>
<a name="line-208"></a>      <span class='hs-varid'>xpadded</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>padleft</span> <span class='hs-varid'>sw</span><span class='hs-layout'>)</span> <span class='hs-varid'>ypadded</span>
<a name="line-209"></a>
<a name="line-210"></a><a name="padleft"></a><span class='hs-comment'>-- | Convert a multi-line string to a rectangular string left-padded to the specified width.</span>
<a name="line-211"></a><span class='hs-definition'>padleft</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span>
<a name="line-212"></a><span class='hs-definition'>padleft</span> <span class='hs-varid'>w</span> <span class='hs-str'>""</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>concat</span> <span class='hs-varop'>$</span> <span class='hs-varid'>replicate</span> <span class='hs-varid'>w</span> <span class='hs-str'>" "</span>
<a name="line-213"></a><span class='hs-definition'>padleft</span> <span class='hs-varid'>w</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>intercalate</span> <span class='hs-str'>"\n"</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>printf</span> <span class='hs-layout'>(</span><span class='hs-varid'>printf</span> <span class='hs-str'>"%%%ds"</span> <span class='hs-varid'>w</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>lines</span> <span class='hs-varid'>s</span>
<a name="line-214"></a>
<a name="line-215"></a><a name="padright"></a><span class='hs-comment'>-- | Convert a multi-line string to a rectangular string right-padded to the specified width.</span>
<a name="line-216"></a><span class='hs-definition'>padright</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span>
<a name="line-217"></a><span class='hs-definition'>padright</span> <span class='hs-varid'>w</span> <span class='hs-str'>""</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>concat</span> <span class='hs-varop'>$</span> <span class='hs-varid'>replicate</span> <span class='hs-varid'>w</span> <span class='hs-str'>" "</span>
<a name="line-218"></a><span class='hs-definition'>padright</span> <span class='hs-varid'>w</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>intercalate</span> <span class='hs-str'>"\n"</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>printf</span> <span class='hs-layout'>(</span><span class='hs-varid'>printf</span> <span class='hs-str'>"%%-%ds"</span> <span class='hs-varid'>w</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>lines</span> <span class='hs-varid'>s</span>
<a name="line-219"></a>
<a name="line-220"></a><a name="cliptopleft"></a><span class='hs-comment'>-- | Clip a multi-line string to the specified width and height from the top left.</span>
<a name="line-221"></a><span class='hs-definition'>cliptopleft</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span>
<a name="line-222"></a><span class='hs-definition'>cliptopleft</span> <span class='hs-varid'>w</span> <span class='hs-varid'>h</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>intercalate</span> <span class='hs-str'>"\n"</span> <span class='hs-varop'>.</span> <span class='hs-varid'>take</span> <span class='hs-varid'>h</span> <span class='hs-varop'>.</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>take</span> <span class='hs-varid'>w</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>lines</span>
<a name="line-223"></a>
<a name="line-224"></a><a name="fitto"></a><span class='hs-comment'>-- | Clip and pad a multi-line string to fill the specified width and height.</span>
<a name="line-225"></a><span class='hs-definition'>fitto</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span>
<a name="line-226"></a><span class='hs-definition'>fitto</span> <span class='hs-varid'>w</span> <span class='hs-varid'>h</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>intercalate</span> <span class='hs-str'>"\n"</span> <span class='hs-varop'>$</span> <span class='hs-varid'>take</span> <span class='hs-varid'>h</span> <span class='hs-varop'>$</span> <span class='hs-varid'>rows</span> <span class='hs-varop'>++</span> <span class='hs-varid'>repeat</span> <span class='hs-varid'>blankline</span>
<a name="line-227"></a>    <span class='hs-keyword'>where</span>
<a name="line-228"></a>      <span class='hs-varid'>rows</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>fit</span> <span class='hs-varid'>w</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>lines</span> <span class='hs-varid'>s</span>
<a name="line-229"></a>      <span class='hs-varid'>fit</span> <span class='hs-varid'>w</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>take</span> <span class='hs-varid'>w</span> <span class='hs-varop'>.</span> <span class='hs-layout'>(</span><span class='hs-varop'>++</span> <span class='hs-varid'>repeat</span> <span class='hs-chr'>' '</span><span class='hs-layout'>)</span>
<a name="line-230"></a>      <span class='hs-varid'>blankline</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>replicate</span> <span class='hs-varid'>w</span> <span class='hs-chr'>' '</span>
<a name="line-231"></a>
<a name="line-232"></a><span class='hs-comment'>-- tuples</span>
<a name="line-233"></a>
<a name="line-234"></a><a name="first3"></a><span class='hs-definition'>first3</span>  <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span>
<a name="line-235"></a><a name="second3"></a><span class='hs-definition'>second3</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span>
<a name="line-236"></a><a name="third3"></a><span class='hs-definition'>third3</span>  <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span>
<a name="line-237"></a>
<a name="line-238"></a><a name="first4"></a><span class='hs-definition'>first4</span>  <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span>
<a name="line-239"></a><a name="second4"></a><span class='hs-definition'>second4</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span>
<a name="line-240"></a><a name="third4"></a><span class='hs-definition'>third4</span>  <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span>
<a name="line-241"></a><a name="fourth4"></a><span class='hs-definition'>fourth4</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span>
<a name="line-242"></a>
<a name="line-243"></a><a name="first5"></a><span class='hs-definition'>first5</span>  <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span>
<a name="line-244"></a><a name="second5"></a><span class='hs-definition'>second5</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span>
<a name="line-245"></a><a name="third5"></a><span class='hs-definition'>third5</span>  <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span>
<a name="line-246"></a><a name="fourth5"></a><span class='hs-definition'>fourth5</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-varid'>x</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span>
<a name="line-247"></a><a name="fifth5"></a><span class='hs-definition'>fifth5</span>  <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>x</span>
<a name="line-248"></a>
<a name="line-249"></a><span class='hs-comment'>-- math</span>
<a name="line-250"></a>
<a name="line-251"></a><a name="difforzero"></a><span class='hs-definition'>difforzero</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Num</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>Ord</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>a</span>
<a name="line-252"></a><span class='hs-definition'>difforzero</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>maximum</span> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-comment'>-</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-num'>0</span><span class='hs-keyglyph'>]</span>
<a name="line-253"></a>
<a name="line-254"></a><span class='hs-comment'>-- lists</span>
<a name="line-255"></a>
<a name="line-256"></a><a name="splitAtElement"></a><span class='hs-definition'>splitAtElement</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyglyph'>[</span><span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span><span class='hs-keyglyph'>]</span>
<a name="line-257"></a><span class='hs-definition'>splitAtElement</span> <span class='hs-varid'>x</span> <span class='hs-varid'>l</span> <span class='hs-keyglyph'>=</span>
<a name="line-258"></a>  <span class='hs-keyword'>case</span> <span class='hs-varid'>l</span> <span class='hs-keyword'>of</span>
<a name="line-259"></a>    <span class='hs-conid'>[]</span>          <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>[]</span>
<a name="line-260"></a>    <span class='hs-varid'>e</span><span class='hs-conop'>:</span><span class='hs-varid'>es</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>e</span><span class='hs-varop'>==</span><span class='hs-varid'>x</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>split</span> <span class='hs-varid'>es</span>
<a name="line-261"></a>    <span class='hs-varid'>es</span>          <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>split</span> <span class='hs-varid'>es</span>
<a name="line-262"></a>  <span class='hs-keyword'>where</span>
<a name="line-263"></a>    <span class='hs-varid'>split</span> <span class='hs-varid'>es</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>let</span> <span class='hs-layout'>(</span><span class='hs-varid'>first</span><span class='hs-layout'>,</span><span class='hs-varid'>rest</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>break</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-varop'>==</span><span class='hs-layout'>)</span> <span class='hs-varid'>es</span>
<a name="line-264"></a>               <span class='hs-keyword'>in</span> <span class='hs-varid'>first</span> <span class='hs-conop'>:</span> <span class='hs-varid'>splitAtElement</span> <span class='hs-varid'>x</span> <span class='hs-varid'>rest</span>
<a name="line-265"></a>
<a name="line-266"></a><span class='hs-comment'>-- trees</span>
<a name="line-267"></a>
<a name="line-268"></a><span class='hs-comment'>-- standard tree helpers</span>
<a name="line-269"></a>
<a name="line-270"></a><a name="root"></a><span class='hs-definition'>root</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>rootLabel</span>
<a name="line-271"></a><a name="subs"></a><span class='hs-definition'>subs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>subForest</span>
<a name="line-272"></a><a name="branches"></a><span class='hs-definition'>branches</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>subForest</span>
<a name="line-273"></a>
<a name="line-274"></a><a name="leaves"></a><span class='hs-comment'>-- | List just the leaf nodes of a tree</span>
<a name="line-275"></a><span class='hs-definition'>leaves</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Tree</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span>
<a name="line-276"></a><span class='hs-definition'>leaves</span> <span class='hs-layout'>(</span><span class='hs-conid'>Node</span> <span class='hs-varid'>v</span> <span class='hs-conid'>[]</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>v</span><span class='hs-keyglyph'>]</span>
<a name="line-277"></a><span class='hs-definition'>leaves</span> <span class='hs-layout'>(</span><span class='hs-conid'>Node</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>branches</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>concatMap</span> <span class='hs-varid'>leaves</span> <span class='hs-varid'>branches</span>
<a name="line-278"></a>
<a name="line-279"></a><a name="subtreeat"></a><span class='hs-comment'>-- | get the sub-tree rooted at the first (left-most, depth-first) occurrence</span>
<a name="line-280"></a><span class='hs-comment'>-- of the specified node value</span>
<a name="line-281"></a><span class='hs-definition'>subtreeat</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Tree</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>Tree</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-282"></a><span class='hs-definition'>subtreeat</span> <span class='hs-varid'>v</span> <span class='hs-varid'>t</span>
<a name="line-283"></a>    <span class='hs-keyglyph'>|</span> <span class='hs-varid'>root</span> <span class='hs-varid'>t</span> <span class='hs-varop'>==</span> <span class='hs-varid'>v</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>t</span>
<a name="line-284"></a>    <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>subtreeinforest</span> <span class='hs-varid'>v</span> <span class='hs-varop'>$</span> <span class='hs-varid'>subs</span> <span class='hs-varid'>t</span>
<a name="line-285"></a>
<a name="line-286"></a><a name="subtreeinforest"></a><span class='hs-comment'>-- | get the sub-tree for the specified node value in the first tree in</span>
<a name="line-287"></a><span class='hs-comment'>-- forest in which it occurs.</span>
<a name="line-288"></a><span class='hs-definition'>subtreeinforest</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Tree</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>Tree</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-289"></a><span class='hs-definition'>subtreeinforest</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-290"></a><span class='hs-definition'>subtreeinforest</span> <span class='hs-varid'>v</span> <span class='hs-layout'>(</span><span class='hs-varid'>t</span><span class='hs-conop'>:</span><span class='hs-varid'>ts</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-layout'>(</span><span class='hs-varid'>subtreeat</span> <span class='hs-varid'>v</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-291"></a>                             <span class='hs-conid'>Just</span> <span class='hs-varid'>t'</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Just</span> <span class='hs-varid'>t'</span>
<a name="line-292"></a>                             <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>subtreeinforest</span> <span class='hs-varid'>v</span> <span class='hs-varid'>ts</span>
<a name="line-293"></a>
<a name="line-294"></a><a name="treeprune"></a><span class='hs-comment'>-- | remove all nodes past a certain depth</span>
<a name="line-295"></a><span class='hs-definition'>treeprune</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Tree</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Tree</span> <span class='hs-varid'>a</span>
<a name="line-296"></a><span class='hs-definition'>treeprune</span> <span class='hs-num'>0</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Node</span> <span class='hs-layout'>(</span><span class='hs-varid'>root</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-conid'>[]</span>
<a name="line-297"></a><span class='hs-definition'>treeprune</span> <span class='hs-varid'>d</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Node</span> <span class='hs-layout'>(</span><span class='hs-varid'>root</span> <span class='hs-varid'>t</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-varid'>treeprune</span> <span class='hs-varop'>$</span> <span class='hs-varid'>d</span><span class='hs-comment'>-</span><span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>branches</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span>
<a name="line-298"></a>
<a name="line-299"></a><a name="treemap"></a><span class='hs-comment'>-- | apply f to all tree nodes</span>
<a name="line-300"></a><span class='hs-definition'>treemap</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Tree</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Tree</span> <span class='hs-varid'>b</span>
<a name="line-301"></a><span class='hs-definition'>treemap</span> <span class='hs-varid'>f</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Node</span> <span class='hs-layout'>(</span><span class='hs-varid'>f</span> <span class='hs-varop'>$</span> <span class='hs-varid'>root</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>treemap</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>branches</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span>
<a name="line-302"></a>
<a name="line-303"></a><a name="treefilter"></a><span class='hs-comment'>-- | remove all subtrees whose nodes do not fulfill predicate</span>
<a name="line-304"></a><span class='hs-definition'>treefilter</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Tree</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Tree</span> <span class='hs-varid'>a</span>
<a name="line-305"></a><span class='hs-definition'>treefilter</span> <span class='hs-varid'>f</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Node</span>
<a name="line-306"></a>                 <span class='hs-layout'>(</span><span class='hs-varid'>root</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span>
<a name="line-307"></a>                 <span class='hs-layout'>(</span><span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>treefilter</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>filter</span> <span class='hs-layout'>(</span><span class='hs-varid'>treeany</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>branches</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span>
<a name="line-308"></a>
<a name="line-309"></a><a name="treeany"></a><span class='hs-comment'>-- | is predicate true in any node of tree ?</span>
<a name="line-310"></a><span class='hs-definition'>treeany</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Tree</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Bool</span>
<a name="line-311"></a><span class='hs-definition'>treeany</span> <span class='hs-varid'>f</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span> <span class='hs-layout'>(</span><span class='hs-varid'>root</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-varop'>||</span> <span class='hs-varid'>any</span> <span class='hs-layout'>(</span><span class='hs-varid'>treeany</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>branches</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span>
<a name="line-312"></a>
<a name="line-313"></a><span class='hs-comment'>-- treedrop -- remove the leaves which do fulfill predicate.</span>
<a name="line-314"></a><span class='hs-comment'>-- treedropall -- do this repeatedly.</span>
<a name="line-315"></a>
<a name="line-316"></a><a name="showtree"></a><span class='hs-comment'>-- | show a compact ascii representation of a tree</span>
<a name="line-317"></a><span class='hs-definition'>showtree</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Show</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>Tree</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span>
<a name="line-318"></a><span class='hs-definition'>showtree</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>unlines</span> <span class='hs-varop'>.</span> <span class='hs-varid'>filter</span> <span class='hs-layout'>(</span><span class='hs-varid'>regexMatches</span> <span class='hs-str'>"[^ \\|]"</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>lines</span> <span class='hs-varop'>.</span> <span class='hs-varid'>drawTree</span> <span class='hs-varop'>.</span> <span class='hs-varid'>treemap</span> <span class='hs-varid'>show</span>
<a name="line-319"></a>
<a name="line-320"></a><a name="showforest"></a><span class='hs-comment'>-- | show a compact ascii representation of a forest</span>
<a name="line-321"></a><span class='hs-definition'>showforest</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Show</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>Forest</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span>
<a name="line-322"></a><span class='hs-definition'>showforest</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>concatMap</span> <span class='hs-varid'>showtree</span>
<a name="line-323"></a>
<a name="line-324"></a>
<a name="line-325"></a><a name="FastTree"></a><span class='hs-comment'>-- | An efficient-to-build tree suggested by Cale Gibbard, probably</span>
<a name="line-326"></a><a name="FastTree"></a><span class='hs-comment'>-- better than accountNameTreeFrom.</span>
<a name="line-327"></a><a name="FastTree"></a><span class='hs-keyword'>newtype</span> <span class='hs-conid'>FastTree</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span> <span class='hs-layout'>(</span><span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-conid'>Map</span> <span class='hs-varid'>a</span> <span class='hs-layout'>(</span><span class='hs-conid'>FastTree</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-328"></a>  <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Show</span><span class='hs-layout'>,</span> <span class='hs-conid'>Eq</span><span class='hs-layout'>,</span> <span class='hs-conid'>Ord</span><span class='hs-layout'>)</span>
<a name="line-329"></a>
<a name="line-330"></a><a name="emptyTree"></a><span class='hs-definition'>emptyTree</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span> <span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span>
<a name="line-331"></a>
<a name="line-332"></a><a name="mergeTrees"></a><span class='hs-definition'>mergeTrees</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ord</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>FastTree</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>FastTree</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>FastTree</span> <span class='hs-varid'>a</span>
<a name="line-333"></a><span class='hs-definition'>mergeTrees</span> <span class='hs-layout'>(</span><span class='hs-conid'>T</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>T</span> <span class='hs-varid'>m'</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span> <span class='hs-layout'>(</span><span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-varid'>unionWith</span> <span class='hs-varid'>mergeTrees</span> <span class='hs-varid'>m</span> <span class='hs-varid'>m'</span><span class='hs-layout'>)</span>
<a name="line-334"></a>
<a name="line-335"></a><a name="treeFromPath"></a><span class='hs-definition'>treeFromPath</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>FastTree</span> <span class='hs-varid'>a</span>
<a name="line-336"></a><span class='hs-definition'>treeFromPath</span> <span class='hs-conid'>[]</span>     <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span> <span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span>
<a name="line-337"></a><span class='hs-definition'>treeFromPath</span> <span class='hs-layout'>(</span><span class='hs-varid'>x</span><span class='hs-conop'>:</span><span class='hs-varid'>xs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>T</span> <span class='hs-layout'>(</span><span class='hs-conid'>M</span><span class='hs-varop'>.</span><span class='hs-varid'>singleton</span> <span class='hs-varid'>x</span> <span class='hs-layout'>(</span><span class='hs-varid'>treeFromPath</span> <span class='hs-varid'>xs</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span>
<a name="line-338"></a>
<a name="line-339"></a><a name="treeFromPaths"></a><span class='hs-definition'>treeFromPaths</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Ord</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-keyglyph'>[</span><span class='hs-keyglyph'>[</span><span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>FastTree</span> <span class='hs-varid'>a</span>
<a name="line-340"></a><span class='hs-definition'>treeFromPaths</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>foldl'</span> <span class='hs-varid'>mergeTrees</span> <span class='hs-varid'>emptyTree</span> <span class='hs-varop'>.</span> <span class='hs-varid'>map</span> <span class='hs-varid'>treeFromPath</span>
<a name="line-341"></a>
<a name="line-342"></a>
<a name="line-343"></a><span class='hs-comment'>-- parsing</span>
<a name="line-344"></a>
<a name="line-345"></a><a name="choice'"></a><span class='hs-comment'>-- | Backtracking choice, use this when alternatives share a prefix.</span>
<a name="line-346"></a><span class='hs-comment'>-- Consumes no input if all choices fail.</span>
<a name="line-347"></a><span class='hs-definition'>choice'</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Stream</span> <span class='hs-varid'>s</span> <span class='hs-varid'>m</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>ParsecT</span> <span class='hs-varid'>s</span> <span class='hs-varid'>u</span> <span class='hs-varid'>m</span> <span class='hs-varid'>a</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>ParsecT</span> <span class='hs-varid'>s</span> <span class='hs-varid'>u</span> <span class='hs-varid'>m</span> <span class='hs-varid'>a</span>
<a name="line-348"></a><span class='hs-definition'>choice'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>choice</span> <span class='hs-varop'>.</span> <span class='hs-varid'>map</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>Parsec</span><span class='hs-varop'>.</span><span class='hs-varid'>try</span>
<a name="line-349"></a>
<a name="line-350"></a><a name="parsewith"></a><span class='hs-definition'>parsewith</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parsec</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Char</span><span class='hs-keyglyph'>]</span> <span class='hs-conid'>()</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Either</span> <span class='hs-conid'>ParseError</span> <span class='hs-varid'>a</span>
<a name="line-351"></a><span class='hs-definition'>parsewith</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runParser</span> <span class='hs-varid'>p</span> <span class='hs-conid'>()</span> <span class='hs-str'>""</span>
<a name="line-352"></a>
<a name="line-353"></a><a name="parseWithCtx"></a><span class='hs-definition'>parseWithCtx</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Stream</span> <span class='hs-varid'>s</span> <span class='hs-varid'>m</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-varid'>u</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>ParsecT</span> <span class='hs-varid'>s</span> <span class='hs-varid'>u</span> <span class='hs-varid'>m</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>s</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-conid'>Either</span> <span class='hs-conid'>ParseError</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-354"></a><span class='hs-definition'>parseWithCtx</span> <span class='hs-varid'>ctx</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>runParserT</span> <span class='hs-varid'>p</span> <span class='hs-varid'>ctx</span> <span class='hs-str'>""</span>
<a name="line-355"></a>
<a name="line-356"></a><a name="fromparse"></a><span class='hs-definition'>fromparse</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Either</span> <span class='hs-conid'>ParseError</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>a</span>
<a name="line-357"></a><span class='hs-definition'>fromparse</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>either</span> <span class='hs-varid'>parseerror</span> <span class='hs-varid'>id</span>
<a name="line-358"></a>
<a name="line-359"></a><a name="parseerror"></a><span class='hs-definition'>parseerror</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ParseError</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>a</span>
<a name="line-360"></a><span class='hs-definition'>parseerror</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>error'</span> <span class='hs-varop'>$</span> <span class='hs-varid'>showParseError</span> <span class='hs-varid'>e</span>
<a name="line-361"></a>
<a name="line-362"></a><a name="showParseError"></a><span class='hs-definition'>showParseError</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ParseError</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span>
<a name="line-363"></a><span class='hs-definition'>showParseError</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>"parse error at "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>e</span>
<a name="line-364"></a>
<a name="line-365"></a><a name="showDateParseError"></a><span class='hs-definition'>showDateParseError</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ParseError</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span>
<a name="line-366"></a><span class='hs-definition'>showDateParseError</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>printf</span> <span class='hs-str'>"date parse error (%s)"</span> <span class='hs-layout'>(</span><span class='hs-varid'>intercalate</span> <span class='hs-str'>", "</span> <span class='hs-varop'>$</span> <span class='hs-varid'>tail</span> <span class='hs-varop'>$</span> <span class='hs-varid'>lines</span> <span class='hs-varop'>$</span> <span class='hs-varid'>show</span> <span class='hs-varid'>e</span><span class='hs-layout'>)</span>
<a name="line-367"></a>
<a name="line-368"></a><a name="nonspace"></a><span class='hs-definition'>nonspace</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Stream</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Char</span><span class='hs-keyglyph'>]</span> <span class='hs-varid'>m</span> <span class='hs-conid'>Char</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>ParsecT</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Char</span><span class='hs-keyglyph'>]</span> <span class='hs-varid'>st</span> <span class='hs-varid'>m</span> <span class='hs-conid'>Char</span>
<a name="line-369"></a><span class='hs-definition'>nonspace</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>satisfy</span> <span class='hs-layout'>(</span><span class='hs-varid'>not</span> <span class='hs-varop'>.</span> <span class='hs-varid'>isSpace</span><span class='hs-layout'>)</span>
<a name="line-370"></a>
<a name="line-371"></a><a name="spacenonewline"></a><span class='hs-definition'>spacenonewline</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Stream</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Char</span><span class='hs-keyglyph'>]</span> <span class='hs-varid'>m</span> <span class='hs-conid'>Char</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>ParsecT</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Char</span><span class='hs-keyglyph'>]</span> <span class='hs-varid'>st</span> <span class='hs-varid'>m</span> <span class='hs-conid'>Char</span>
<a name="line-372"></a><span class='hs-definition'>spacenonewline</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>satisfy</span> <span class='hs-layout'>(</span><span class='hs-varop'>`elem`</span> <span class='hs-str'>" \v\f\t"</span><span class='hs-layout'>)</span>
<a name="line-373"></a>
<a name="line-374"></a><a name="restofline"></a><span class='hs-definition'>restofline</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Stream</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Char</span><span class='hs-keyglyph'>]</span> <span class='hs-varid'>m</span> <span class='hs-conid'>Char</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>ParsecT</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Char</span><span class='hs-keyglyph'>]</span> <span class='hs-varid'>st</span> <span class='hs-varid'>m</span> <span class='hs-conid'>String</span>
<a name="line-375"></a><span class='hs-definition'>restofline</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>anyChar</span> <span class='hs-varop'>`manyTill`</span> <span class='hs-varid'>newline</span>
<a name="line-376"></a>
<a name="line-377"></a><a name="eolof"></a><span class='hs-definition'>eolof</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Stream</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Char</span><span class='hs-keyglyph'>]</span> <span class='hs-varid'>m</span> <span class='hs-conid'>Char</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>ParsecT</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Char</span><span class='hs-keyglyph'>]</span> <span class='hs-varid'>st</span> <span class='hs-varid'>m</span> <span class='hs-conid'>()</span>
<a name="line-378"></a><span class='hs-definition'>eolof</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>newline</span> <span class='hs-varop'>&gt;&gt;</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span><span class='hs-layout'>)</span> <span class='hs-varop'>&lt;|&gt;</span> <span class='hs-varid'>eof</span>
<a name="line-379"></a>
<a name="line-380"></a><span class='hs-comment'>-- time</span>
<a name="line-381"></a>
<a name="line-382"></a><a name="getCurrentLocalTime"></a><span class='hs-definition'>getCurrentLocalTime</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>LocalTime</span>
<a name="line-383"></a><span class='hs-definition'>getCurrentLocalTime</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span>
<a name="line-384"></a>  <span class='hs-varid'>t</span> <span class='hs-keyglyph'>&lt;-</span> <span class='hs-varid'>getCurrentTime</span>
<a name="line-385"></a>  <span class='hs-varid'>tz</span> <span class='hs-keyglyph'>&lt;-</span> <span class='hs-varid'>getCurrentTimeZone</span>
<a name="line-386"></a>  <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>utcToLocalTime</span> <span class='hs-varid'>tz</span> <span class='hs-varid'>t</span>
<a name="line-387"></a>
<a name="line-388"></a><span class='hs-comment'>-- testing</span>
<a name="line-389"></a>
<a name="line-390"></a><a name="testName"></a><span class='hs-comment'>-- | Get a Test's label, or the empty string.</span>
<a name="line-391"></a><span class='hs-definition'>testName</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Test</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>String</span>
<a name="line-392"></a><span class='hs-definition'>testName</span> <span class='hs-layout'>(</span><span class='hs-conid'>TestLabel</span> <span class='hs-varid'>n</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>n</span>
<a name="line-393"></a><span class='hs-definition'>testName</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>""</span>
<a name="line-394"></a>
<a name="line-395"></a><a name="flattenTests"></a><span class='hs-comment'>-- | Flatten a Test containing TestLists into a list of single tests.</span>
<a name="line-396"></a><span class='hs-definition'>flattenTests</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Test</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>Test</span><span class='hs-keyglyph'>]</span>
<a name="line-397"></a><span class='hs-definition'>flattenTests</span> <span class='hs-layout'>(</span><span class='hs-conid'>TestLabel</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>t</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>TestList</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>flattenTests</span> <span class='hs-varid'>t</span>
<a name="line-398"></a><span class='hs-definition'>flattenTests</span> <span class='hs-layout'>(</span><span class='hs-conid'>TestList</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>concatMap</span> <span class='hs-varid'>flattenTests</span> <span class='hs-varid'>ts</span>
<a name="line-399"></a><span class='hs-definition'>flattenTests</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>t</span><span class='hs-keyglyph'>]</span>
<a name="line-400"></a>
<a name="line-401"></a><a name="filterTests"></a><span class='hs-comment'>-- | Filter TestLists in a Test, recursively, preserving the structure.</span>
<a name="line-402"></a><span class='hs-definition'>filterTests</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Test</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Bool</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Test</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Test</span>
<a name="line-403"></a><span class='hs-definition'>filterTests</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-conid'>TestLabel</span> <span class='hs-varid'>l</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>TestLabel</span> <span class='hs-varid'>l</span> <span class='hs-layout'>(</span><span class='hs-varid'>filterTests</span> <span class='hs-varid'>p</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span>
<a name="line-404"></a><span class='hs-definition'>filterTests</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-conid'>TestList</span> <span class='hs-varid'>ts</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>TestList</span> <span class='hs-varop'>$</span> <span class='hs-varid'>filter</span> <span class='hs-layout'>(</span><span class='hs-varid'>any</span> <span class='hs-varid'>p</span> <span class='hs-varop'>.</span> <span class='hs-varid'>flattenTests</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>map</span> <span class='hs-layout'>(</span><span class='hs-varid'>filterTests</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-varid'>ts</span>
<a name="line-405"></a><span class='hs-definition'>filterTests</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>t</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>t</span>
<a name="line-406"></a>
<a name="line-407"></a><a name="is"></a><span class='hs-comment'>-- | Simple way to assert something is some expected value, with no label.</span>
<a name="line-408"></a><span class='hs-definition'>is</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>Show</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Assertion</span>
<a name="line-409"></a><a name="is"></a><span class='hs-definition'>a</span> <span class='hs-varop'>`is`</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>assertEqual</span> <span class='hs-str'>""</span> <span class='hs-varid'>e</span> <span class='hs-varid'>a</span>
<a name="line-410"></a>
<a name="line-411"></a><a name="assertParse"></a><span class='hs-comment'>-- | Assert a parse result is successful, printing the parse error on failure.</span>
<a name="line-412"></a><span class='hs-definition'>assertParse</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Either</span> <span class='hs-conid'>ParseError</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Assertion</span>
<a name="line-413"></a><span class='hs-definition'>assertParse</span> <span class='hs-varid'>parse</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>either</span> <span class='hs-layout'>(</span><span class='hs-varid'>assertFailure</span><span class='hs-varop'>.</span><span class='hs-varid'>show</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>const</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'>parse</span>
<a name="line-414"></a>
<a name="line-415"></a><a name="assertParseFailure"></a><span class='hs-comment'>-- | Assert a parse result is successful, printing the parse error on failure.</span>
<a name="line-416"></a><span class='hs-definition'>assertParseFailure</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Either</span> <span class='hs-conid'>ParseError</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Assertion</span>
<a name="line-417"></a><span class='hs-definition'>assertParseFailure</span> <span class='hs-varid'>parse</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>either</span> <span class='hs-layout'>(</span><span class='hs-varid'>const</span> <span class='hs-varop'>$</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'>const</span> <span class='hs-varop'>$</span> <span class='hs-varid'>assertFailure</span> <span class='hs-str'>"parse should not have succeeded"</span><span class='hs-layout'>)</span> <span class='hs-varid'>parse</span>
<a name="line-418"></a>
<a name="line-419"></a><a name="assertParseEqual"></a><span class='hs-comment'>-- | Assert a parse result is some expected value, printing the parse error on failure.</span>
<a name="line-420"></a><span class='hs-definition'>assertParseEqual</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Show</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-conid'>Eq</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-layout'>(</span><span class='hs-conid'>Either</span> <span class='hs-conid'>ParseError</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Assertion</span>
<a name="line-421"></a><span class='hs-definition'>assertParseEqual</span> <span class='hs-varid'>parse</span> <span class='hs-varid'>expected</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>either</span> <span class='hs-layout'>(</span><span class='hs-varid'>assertFailure</span><span class='hs-varop'>.</span><span class='hs-varid'>show</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varop'>`is`</span> <span class='hs-varid'>expected</span><span class='hs-layout'>)</span> <span class='hs-varid'>parse</span>
<a name="line-422"></a>
<a name="line-423"></a><a name="printParseError"></a><span class='hs-definition'>printParseError</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>Show</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>()</span>
<a name="line-424"></a><span class='hs-definition'>printParseError</span> <span class='hs-varid'>e</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>putStr</span> <span class='hs-str'>"parse error at "</span><span class='hs-layout'>;</span> <span class='hs-varid'>print</span> <span class='hs-varid'>e</span>
<a name="line-425"></a>
<a name="line-426"></a><span class='hs-comment'>-- misc</span>
<a name="line-427"></a>
<a name="line-428"></a><a name="isLeft"></a><span class='hs-definition'>isLeft</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Either</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Bool</span>
<a name="line-429"></a><span class='hs-definition'>isLeft</span> <span class='hs-layout'>(</span><span class='hs-conid'>Left</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>True</span>
<a name="line-430"></a><span class='hs-definition'>isLeft</span> <span class='hs-keyword'>_</span>        <span class='hs-keyglyph'>=</span> <span class='hs-conid'>False</span>
<a name="line-431"></a>
<a name="line-432"></a><a name="isRight"></a><span class='hs-definition'>isRight</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Either</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Bool</span>
<a name="line-433"></a><span class='hs-definition'>isRight</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>not</span> <span class='hs-varop'>.</span> <span class='hs-varid'>isLeft</span>
<a name="line-434"></a>
<a name="line-435"></a><a name="applyN"></a><span class='hs-comment'>-- | Apply a function the specified number of times. Possibly uses O(n) stack ?</span>
<a name="line-436"></a><span class='hs-definition'>applyN</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>a</span>
<a name="line-437"></a><span class='hs-definition'>applyN</span> <span class='hs-varid'>n</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varop'>!!</span> <span class='hs-varid'>n</span><span class='hs-layout'>)</span> <span class='hs-varop'>.</span> <span class='hs-varid'>iterate</span> <span class='hs-varid'>f</span>
<a name="line-438"></a>
<a name="line-439"></a><a name="expandPath"></a><span class='hs-comment'>-- | Convert a possibly relative, possibly tilde-containing file path to an absolute one,</span>
<a name="line-440"></a><span class='hs-comment'>-- given the current directory. ~username is not supported. Leave "-" unchanged.</span>
<a name="line-441"></a><span class='hs-definition'>expandPath</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>MonadIO</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=&gt;</span> <span class='hs-conid'>FilePath</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>FilePath</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>m</span> <span class='hs-conid'>FilePath</span> <span class='hs-comment'>-- general type sig for use in reader parsers</span>
<a name="line-442"></a><span class='hs-definition'>expandPath</span> <span class='hs-keyword'>_</span> <span class='hs-str'>"-"</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-str'>"-"</span>
<a name="line-443"></a><span class='hs-definition'>expandPath</span> <span class='hs-varid'>curdir</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-keyword'>if</span> <span class='hs-varid'>isRelative</span> <span class='hs-varid'>p</span> <span class='hs-keyword'>then</span> <span class='hs-layout'>(</span><span class='hs-varid'>curdir</span> <span class='hs-varop'>&lt;/&gt;</span><span class='hs-layout'>)</span> <span class='hs-keyword'>else</span> <span class='hs-varid'>id</span><span class='hs-layout'>)</span> <span class='hs-varop'>`liftM`</span> <span class='hs-varid'>expandPath'</span> <span class='hs-varid'>p</span>
<a name="line-444"></a>  <span class='hs-keyword'>where</span>
<a name="line-445"></a>    <span class='hs-varid'>expandPath'</span> <span class='hs-layout'>(</span><span class='hs-chr'>'~'</span><span class='hs-conop'>:</span><span class='hs-chr'>'/'</span><span class='hs-conop'>:</span><span class='hs-varid'>p</span><span class='hs-layout'>)</span>  <span class='hs-keyglyph'>=</span> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-layout'>(</span><span class='hs-varop'>&lt;/&gt;</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-varop'>`fmap`</span> <span class='hs-varid'>getHomeDirectory</span>
<a name="line-446"></a>    <span class='hs-varid'>expandPath'</span> <span class='hs-layout'>(</span><span class='hs-chr'>'~'</span><span class='hs-conop'>:</span><span class='hs-chr'>'\\'</span><span class='hs-conop'>:</span><span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>liftIO</span> <span class='hs-varop'>$</span> <span class='hs-layout'>(</span><span class='hs-varop'>&lt;/&gt;</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-varop'>`fmap`</span> <span class='hs-varid'>getHomeDirectory</span>
<a name="line-447"></a>    <span class='hs-varid'>expandPath'</span> <span class='hs-layout'>(</span><span class='hs-chr'>'~'</span><span class='hs-conop'>:</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span>      <span class='hs-keyglyph'>=</span> <span class='hs-varid'>error'</span> <span class='hs-str'>"~USERNAME in paths is not supported"</span>
<a name="line-448"></a>    <span class='hs-varid'>expandPath'</span> <span class='hs-varid'>p</span>            <span class='hs-keyglyph'>=</span> <span class='hs-varid'>return</span> <span class='hs-varid'>p</span>
<a name="line-449"></a>
<a name="line-450"></a><a name="firstJust"></a><span class='hs-definition'>firstJust</span> <span class='hs-varid'>ms</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>dropWhile</span> <span class='hs-layout'>(</span><span class='hs-varop'>==</span><span class='hs-conid'>Nothing</span><span class='hs-layout'>)</span> <span class='hs-varid'>ms</span> <span class='hs-keyword'>of</span>
<a name="line-451"></a>    <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>Nothing</span>
<a name="line-452"></a>    <span class='hs-layout'>(</span><span class='hs-varid'>md</span><span class='hs-conop'>:</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-varid'>md</span>
<a name="line-453"></a>
<a name="line-454"></a><a name="readFile'"></a><span class='hs-comment'>-- | Read a file in universal newline mode, handling whatever newline convention it may contain.</span>
<a name="line-455"></a><span class='hs-definition'>readFile'</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FilePath</span> <span class='hs-keyglyph'>-&gt;</span> <span class='hs-conid'>IO</span> <span class='hs-conid'>String</span>
<a name="line-456"></a><span class='hs-definition'>readFile'</span> <span class='hs-varid'>name</span> <span class='hs-keyglyph'>=</span>  <span class='hs-keyword'>do</span>
<a name="line-457"></a>  <span class='hs-varid'>h</span> <span class='hs-keyglyph'>&lt;-</span> <span class='hs-varid'>openFile</span> <span class='hs-varid'>name</span> <span class='hs-conid'>ReadMode</span>
<a name="line-458"></a>  <span class='hs-varid'>hSetNewlineMode</span> <span class='hs-varid'>h</span> <span class='hs-varid'>universalNewlineMode</span>
<a name="line-459"></a>  <span class='hs-varid'>hGetContents</span> <span class='hs-varid'>h</span>
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