<?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>src/Darcs/Patch/FileName.hs</title>
<link type='text/css' rel='stylesheet' href='hscolour.css' />
</head>
<body>
<pre><a name="line-1"></a><span class='hs-comment'>-- Copyright (C) 2002-2003 David Roundy</span>
<a name="line-2"></a><span class='hs-comment'>--</span>
<a name="line-3"></a><span class='hs-comment'>-- This program is free software; you can redistribute it and/or modify</span>
<a name="line-4"></a><span class='hs-comment'>-- it under the terms of the GNU General Public License as published by</span>
<a name="line-5"></a><span class='hs-comment'>-- the Free Software Foundation; either version 2, or (at your option)</span>
<a name="line-6"></a><span class='hs-comment'>-- any later version.</span>
<a name="line-7"></a><span class='hs-comment'>--</span>
<a name="line-8"></a><span class='hs-comment'>-- This program is distributed in the hope that it will be useful,</span>
<a name="line-9"></a><span class='hs-comment'>-- but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="line-10"></a><span class='hs-comment'>-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
<a name="line-11"></a><span class='hs-comment'>-- GNU General Public License for more details.</span>
<a name="line-12"></a><span class='hs-comment'>--</span>
<a name="line-13"></a><span class='hs-comment'>-- You should have received a copy of the GNU General Public License</span>
<a name="line-14"></a><span class='hs-comment'>-- along with this program; see the file COPYING. If not, write to</span>
<a name="line-15"></a><span class='hs-comment'>-- the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,</span>
<a name="line-16"></a><span class='hs-comment'>-- Boston, MA 02110-1301, USA.</span>
<a name="line-17"></a>
<a name="line-18"></a><span class='hs-comment'>-- | FileName is an abstract type intended to facilitate the input and output of</span>
<a name="line-19"></a><span class='hs-comment'>-- unicode filenames.</span>
<a name="line-20"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Patch</span><span class='hs-varop'>.</span><span class='hs-conid'>FileName</span> <span class='hs-layout'>(</span> <span class='hs-conid'>FileName</span><span class='hs-layout'>(</span> <span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-21"></a> <span class='hs-varid'>fp2fn</span><span class='hs-layout'>,</span> <span class='hs-varid'>fn2fp</span><span class='hs-layout'>,</span>
<a name="line-22"></a> <span class='hs-varid'>fn2ps</span><span class='hs-layout'>,</span> <span class='hs-varid'>ps2fn</span><span class='hs-layout'>,</span>
<a name="line-23"></a> <span class='hs-varid'>niceps2fn</span><span class='hs-layout'>,</span> <span class='hs-varid'>fn2niceps</span><span class='hs-layout'>,</span>
<a name="line-24"></a> <span class='hs-varid'>breakOnDir</span><span class='hs-layout'>,</span> <span class='hs-varid'>normPath</span><span class='hs-layout'>,</span> <span class='hs-varid'>ownName</span><span class='hs-layout'>,</span> <span class='hs-varid'>superName</span><span class='hs-layout'>,</span>
<a name="line-25"></a> <span class='hs-varid'>movedirfilename</span><span class='hs-layout'>,</span>
<a name="line-26"></a> <span class='hs-varid'>encodeWhite</span><span class='hs-layout'>,</span> <span class='hs-varid'>decodeWhite</span><span class='hs-layout'>,</span>
<a name="line-27"></a> <span class='hs-layout'>(</span><span class='hs-varop'>///</span><span class='hs-layout'>)</span><span class='hs-layout'>,</span>
<a name="line-28"></a> <span class='hs-varid'>breakup</span><span class='hs-layout'>,</span> <span class='hs-varid'>isParentOrEqOf</span>
<a name="line-29"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-30"></a>
<a name="line-31"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Char</span> <span class='hs-layout'>(</span> <span class='hs-varid'>isSpace</span><span class='hs-layout'>,</span> <span class='hs-varid'>chr</span><span class='hs-layout'>,</span> <span class='hs-varid'>ord</span> <span class='hs-layout'>)</span>
<a name="line-32"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>List</span> <span class='hs-layout'>(</span> <span class='hs-varid'>stripPrefix</span> <span class='hs-layout'>)</span>
<a name="line-33"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>ByteStringUtils</span> <span class='hs-layout'>(</span> <span class='hs-varid'>packStringToUTF8</span><span class='hs-layout'>,</span> <span class='hs-varid'>unpackPSFromUTF8</span> <span class='hs-layout'>)</span>
<a name="line-34"></a><span class='hs-keyword'>import</span> <span class='hs-keyword'>qualified</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span><span class='hs-varop'>.</span><span class='hs-conid'>Char8</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>BC</span> <span class='hs-layout'>(</span><span class='hs-varid'>unpack</span><span class='hs-layout'>,</span> <span class='hs-varid'>pack</span><span class='hs-layout'>)</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'>ByteString</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>B</span> <span class='hs-layout'>(</span><span class='hs-conid'>ByteString</span><span class='hs-layout'>)</span>
<a name="line-36"></a>
<a name="line-37"></a><a name="FileName"></a><span class='hs-keyword'>newtype</span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>FN</span> <span class='hs-conid'>FilePath</span> <span class='hs-keyword'>deriving</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-38"></a>
<a name="line-39"></a><a name="instance%20Show%20FileName"></a><span class='hs-keyword'>instance</span> <span class='hs-conid'>Show</span> <span class='hs-conid'>FileName</span> <span class='hs-keyword'>where</span>
<a name="line-40"></a> <span class='hs-varid'>showsPrec</span> <span class='hs-varid'>d</span> <span class='hs-layout'>(</span><span class='hs-conid'>FN</span> <span class='hs-varid'>fp</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>showParen</span> <span class='hs-layout'>(</span><span class='hs-varid'>d</span> <span class='hs-varop'>></span> <span class='hs-varid'>appPrec</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>showString</span> <span class='hs-str'>"fp2fn "</span> <span class='hs-varop'>.</span> <span class='hs-varid'>showsPrec</span> <span class='hs-layout'>(</span><span class='hs-varid'>appPrec</span> <span class='hs-varop'>+</span> <span class='hs-num'>1</span><span class='hs-layout'>)</span> <span class='hs-varid'>fp</span>
<a name="line-41"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>appPrec</span> <span class='hs-keyglyph'>=</span> <span class='hs-num'>10</span>
<a name="line-42"></a>
<a name="line-43"></a><a name="fp2fn"></a><span class='hs-comment'>{-# INLINE fp2fn #-}</span>
<a name="line-44"></a><span class='hs-definition'>fp2fn</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FilePath</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FileName</span>
<a name="line-45"></a><span class='hs-definition'>fp2fn</span> <span class='hs-varid'>fp</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>FN</span> <span class='hs-varid'>fp</span>
<a name="line-46"></a>
<a name="line-47"></a><a name="fn2fp"></a><span class='hs-comment'>{-# INLINE fn2fp #-}</span>
<a name="line-48"></a><span class='hs-definition'>fn2fp</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FilePath</span>
<a name="line-49"></a><span class='hs-definition'>fn2fp</span> <span class='hs-layout'>(</span><span class='hs-conid'>FN</span> <span class='hs-varid'>fp</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fp</span>
<a name="line-50"></a>
<a name="line-51"></a><a name="niceps2fn"></a><span class='hs-comment'>{-# INLINE niceps2fn #-}</span>
<a name="line-52"></a><span class='hs-definition'>niceps2fn</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FileName</span>
<a name="line-53"></a><span class='hs-definition'>niceps2fn</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>FN</span> <span class='hs-varop'>.</span> <span class='hs-varid'>decodeWhite</span> <span class='hs-varop'>.</span> <span class='hs-conid'>BC</span><span class='hs-varop'>.</span><span class='hs-varid'>unpack</span>
<a name="line-54"></a>
<a name="line-55"></a><a name="fn2niceps"></a><span class='hs-comment'>{-# INLINE fn2niceps #-}</span>
<a name="line-56"></a><span class='hs-definition'>fn2niceps</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span>
<a name="line-57"></a><span class='hs-definition'>fn2niceps</span> <span class='hs-layout'>(</span><span class='hs-conid'>FN</span> <span class='hs-varid'>fp</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>BC</span><span class='hs-varop'>.</span><span class='hs-varid'>pack</span> <span class='hs-varop'>$</span> <span class='hs-varid'>encodeWhite</span> <span class='hs-varid'>fp</span>
<a name="line-58"></a>
<a name="line-59"></a><a name="fn2ps"></a><span class='hs-comment'>{-# INLINE fn2ps #-}</span>
<a name="line-60"></a><span class='hs-definition'>fn2ps</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span>
<a name="line-61"></a><span class='hs-definition'>fn2ps</span> <span class='hs-layout'>(</span><span class='hs-conid'>FN</span> <span class='hs-varid'>fp</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>packStringToUTF8</span> <span class='hs-varop'>$</span> <span class='hs-varid'>encodeWhite</span> <span class='hs-varid'>fp</span>
<a name="line-62"></a>
<a name="line-63"></a><a name="ps2fn"></a><span class='hs-comment'>{-# INLINE ps2fn #-}</span>
<a name="line-64"></a><span class='hs-definition'>ps2fn</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>B</span><span class='hs-varop'>.</span><span class='hs-conid'>ByteString</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FileName</span>
<a name="line-65"></a><span class='hs-definition'>ps2fn</span> <span class='hs-varid'>ps</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>FN</span> <span class='hs-varop'>$</span> <span class='hs-varid'>decodeWhite</span> <span class='hs-varop'>$</span> <span class='hs-varid'>unpackPSFromUTF8</span> <span class='hs-varid'>ps</span>
<a name="line-66"></a>
<a name="line-67"></a><a name="encodeWhite"></a><span class='hs-comment'>-- | 'encodeWhite' translates whitespace in filenames to a darcs-specific</span>
<a name="line-68"></a><span class='hs-comment'>-- format (numerical representation according to 'ord' surrounded by</span>
<a name="line-69"></a><span class='hs-comment'>-- backslashes). Note that backslashes are also escaped since they are used</span>
<a name="line-70"></a><span class='hs-comment'>-- in the encoding.</span>
<a name="line-71"></a><span class='hs-comment'>--</span>
<a name="line-72"></a><span class='hs-comment'>-- > encodeWhite "hello there" == "hello\32\there"</span>
<a name="line-73"></a><span class='hs-comment'>-- > encodeWhite "hello\there" == "hello\92\there"</span>
<a name="line-74"></a><span class='hs-definition'>encodeWhite</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FilePath</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span>
<a name="line-75"></a><span class='hs-definition'>encodeWhite</span> <span class='hs-layout'>(</span><span class='hs-varid'>c</span><span class='hs-conop'>:</span><span class='hs-varid'>cs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>isSpace</span> <span class='hs-varid'>c</span> <span class='hs-varop'>||</span> <span class='hs-varid'>c</span> <span class='hs-varop'>==</span> <span class='hs-chr'>'\\'</span> <span class='hs-keyglyph'>=</span>
<a name="line-76"></a> <span class='hs-chr'>'\\'</span> <span class='hs-conop'>:</span> <span class='hs-layout'>(</span><span class='hs-varid'>show</span> <span class='hs-varop'>$</span> <span class='hs-varid'>ord</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span> <span class='hs-varop'>++</span> <span class='hs-str'>"\\"</span> <span class='hs-varop'>++</span> <span class='hs-varid'>encodeWhite</span> <span class='hs-varid'>cs</span>
<a name="line-77"></a><span class='hs-definition'>encodeWhite</span> <span class='hs-layout'>(</span><span class='hs-varid'>c</span><span class='hs-conop'>:</span><span class='hs-varid'>cs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>c</span> <span class='hs-conop'>:</span> <span class='hs-varid'>encodeWhite</span> <span class='hs-varid'>cs</span>
<a name="line-78"></a><span class='hs-definition'>encodeWhite</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-79"></a>
<a name="line-80"></a><a name="decodeWhite"></a><span class='hs-comment'>-- | 'decodeWhite' interprets the Darcs-specific \"encoded\" filenames</span>
<a name="line-81"></a><span class='hs-comment'>-- produced by 'encodeWhite'</span>
<a name="line-82"></a><span class='hs-comment'>--</span>
<a name="line-83"></a><span class='hs-comment'>-- > decodeWhite "hello\32\there" == "hello there"</span>
<a name="line-84"></a><span class='hs-comment'>-- > decodeWhite "hello\92\there" == "hello\there"</span>
<a name="line-85"></a><span class='hs-comment'>-- > decodeWhite "hello\there" == error "malformed filename"</span>
<a name="line-86"></a><span class='hs-definition'>decodeWhite</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FilePath</span>
<a name="line-87"></a><span class='hs-definition'>decodeWhite</span> <span class='hs-layout'>(</span><span class='hs-chr'>'\\'</span><span class='hs-conop'>:</span><span class='hs-varid'>cs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span>
<a name="line-88"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>break</span> <span class='hs-layout'>(</span><span class='hs-varop'>==</span><span class='hs-chr'>'\\'</span><span class='hs-layout'>)</span> <span class='hs-varid'>cs</span> <span class='hs-keyword'>of</span>
<a name="line-89"></a> <span class='hs-layout'>(</span><span class='hs-varid'>theord</span><span class='hs-layout'>,</span> <span class='hs-chr'>'\\'</span><span class='hs-conop'>:</span><span class='hs-varid'>rest</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span>
<a name="line-90"></a> <span class='hs-varid'>chr</span> <span class='hs-layout'>(</span><span class='hs-varid'>read</span> <span class='hs-varid'>theord</span><span class='hs-layout'>)</span> <span class='hs-conop'>:</span> <span class='hs-varid'>decodeWhite</span> <span class='hs-varid'>rest</span>
<a name="line-91"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>error</span> <span class='hs-str'>"malformed filename"</span>
<a name="line-92"></a><span class='hs-definition'>decodeWhite</span> <span class='hs-layout'>(</span><span class='hs-varid'>c</span><span class='hs-conop'>:</span><span class='hs-varid'>cs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>c</span><span class='hs-conop'>:</span> <span class='hs-varid'>decodeWhite</span> <span class='hs-varid'>cs</span>
<a name="line-93"></a><span class='hs-definition'>decodeWhite</span> <span class='hs-str'>""</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>""</span>
<a name="line-94"></a>
<a name="line-95"></a><a name="ownName"></a><span class='hs-definition'>ownName</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FileName</span>
<a name="line-96"></a><span class='hs-definition'>ownName</span> <span class='hs-layout'>(</span><span class='hs-conid'>FN</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>breakLast</span> <span class='hs-chr'>'/'</span> <span class='hs-varid'>f</span> <span class='hs-keyword'>of</span> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FN</span> <span class='hs-varid'>f</span>
<a name="line-97"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span><span class='hs-varid'>f'</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FN</span> <span class='hs-varid'>f'</span>
<a name="line-98"></a><a name="superName"></a><span class='hs-definition'>superName</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FileName</span>
<a name="line-99"></a><span class='hs-definition'>superName</span> <span class='hs-varid'>fn</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>normPath</span> <span class='hs-varid'>fn</span> <span class='hs-keyword'>of</span>
<a name="line-100"></a> <span class='hs-conid'>FN</span> <span class='hs-varid'>f</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyword'>case</span> <span class='hs-varid'>breakLast</span> <span class='hs-chr'>'/'</span> <span class='hs-varid'>f</span> <span class='hs-keyword'>of</span>
<a name="line-101"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FN</span> <span class='hs-str'>"."</span>
<a name="line-102"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>d</span><span class='hs-layout'>,</span><span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FN</span> <span class='hs-varid'>d</span>
<a name="line-103"></a><a name="breakOnDir"></a><span class='hs-definition'>breakOnDir</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>FileName</span><span class='hs-layout'>,</span><span class='hs-conid'>FileName</span><span class='hs-layout'>)</span>
<a name="line-104"></a><span class='hs-definition'>breakOnDir</span> <span class='hs-layout'>(</span><span class='hs-conid'>FN</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>breakFirst</span> <span class='hs-chr'>'/'</span> <span class='hs-varid'>p</span> <span class='hs-keyword'>of</span>
<a name="line-105"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Nothing</span>
<a name="line-106"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>d</span><span class='hs-layout'>,</span><span class='hs-varid'>f</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>d</span> <span class='hs-varop'>==</span> <span class='hs-str'>"."</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>breakOnDir</span> <span class='hs-varop'>$</span> <span class='hs-conid'>FN</span> <span class='hs-varid'>f</span>
<a name="line-107"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-conid'>FN</span> <span class='hs-varid'>d</span><span class='hs-layout'>,</span> <span class='hs-conid'>FN</span> <span class='hs-varid'>f</span><span class='hs-layout'>)</span>
<a name="line-108"></a><a name="normPath"></a><span class='hs-definition'>normPath</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FileName</span> <span class='hs-comment'>-- remove "./"</span>
<a name="line-109"></a><span class='hs-definition'>normPath</span> <span class='hs-layout'>(</span><span class='hs-conid'>FN</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>FN</span> <span class='hs-varop'>$</span> <span class='hs-varid'>repath</span> <span class='hs-varop'>$</span> <span class='hs-varid'>dropDotdot</span> <span class='hs-varop'>$</span> <span class='hs-varid'>breakup</span> <span class='hs-varid'>p</span>
<a name="line-110"></a>
<a name="line-111"></a><a name="repath"></a><span class='hs-definition'>repath</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'>-></span> <span class='hs-conid'>String</span>
<a name="line-112"></a><span class='hs-definition'>repath</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-str'>""</span>
<a name="line-113"></a><span class='hs-definition'>repath</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>f</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>f</span>
<a name="line-114"></a><span class='hs-definition'>repath</span> <span class='hs-layout'>(</span><span class='hs-varid'>d</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'>d</span> <span class='hs-varop'>++</span> <span class='hs-str'>"/"</span> <span class='hs-varop'>++</span> <span class='hs-varid'>repath</span> <span class='hs-varid'>p</span>
<a name="line-115"></a>
<a name="line-116"></a><a name="dropDotdot"></a><span class='hs-definition'>dropDotdot</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'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>String</span><span class='hs-keyglyph'>]</span>
<a name="line-117"></a><span class='hs-definition'>dropDotdot</span> <span class='hs-layout'>(</span><span class='hs-str'>""</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'>dropDotdot</span> <span class='hs-varid'>p</span>
<a name="line-118"></a><span class='hs-definition'>dropDotdot</span> <span class='hs-layout'>(</span><span class='hs-str'>"."</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'>dropDotdot</span> <span class='hs-varid'>p</span>
<a name="line-119"></a><span class='hs-definition'>dropDotdot</span> <span class='hs-layout'>(</span><span class='hs-str'>".."</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-str'>".."</span> <span class='hs-conop'>:</span> <span class='hs-layout'>(</span><span class='hs-varid'>dropDotdot</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span>
<a name="line-120"></a><span class='hs-definition'>dropDotdot</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-conop'>:</span><span class='hs-str'>".."</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'>dropDotdot</span> <span class='hs-varid'>p</span>
<a name="line-121"></a><span class='hs-definition'>dropDotdot</span> <span class='hs-layout'>(</span><span class='hs-varid'>d</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-keyword'>case</span> <span class='hs-varid'>dropDotdot</span> <span class='hs-varid'>p</span> <span class='hs-keyword'>of</span>
<a name="line-122"></a> <span class='hs-layout'>(</span><span class='hs-str'>".."</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'>p'</span>
<a name="line-123"></a> <span class='hs-varid'>p'</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>d</span> <span class='hs-conop'>:</span> <span class='hs-varid'>p'</span>
<a name="line-124"></a><span class='hs-definition'>dropDotdot</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span>
<a name="line-125"></a>
<a name="line-126"></a><a name="breakup"></a><span class='hs-comment'>-- | Split a file path at the slashes</span>
<a name="line-127"></a><span class='hs-definition'>breakup</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>String</span><span class='hs-keyglyph'>]</span>
<a name="line-128"></a><span class='hs-definition'>breakup</span> <span class='hs-varid'>p</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>break</span> <span class='hs-layout'>(</span><span class='hs-varop'>==</span><span class='hs-chr'>'/'</span><span class='hs-layout'>)</span> <span class='hs-varid'>p</span> <span class='hs-keyword'>of</span>
<a name="line-129"></a> <span class='hs-layout'>(</span><span class='hs-varid'>d</span><span class='hs-layout'>,</span><span class='hs-str'>""</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>d</span><span class='hs-keyglyph'>]</span>
<a name="line-130"></a> <span class='hs-layout'>(</span><span class='hs-varid'>d</span><span class='hs-layout'>,</span><span class='hs-varid'>p'</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>d</span> <span class='hs-conop'>:</span> <span class='hs-varid'>breakup</span> <span class='hs-layout'>(</span><span class='hs-varid'>tail</span> <span class='hs-varid'>p'</span><span class='hs-layout'>)</span>
<a name="line-131"></a>
<a name="line-132"></a><a name="breakFirst"></a><span class='hs-definition'>breakFirst</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Char</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>String</span><span class='hs-layout'>,</span><span class='hs-conid'>String</span><span class='hs-layout'>)</span>
<a name="line-133"></a><span class='hs-definition'>breakFirst</span> <span class='hs-varid'>c</span> <span class='hs-varid'>l</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>bf</span> <span class='hs-conid'>[]</span> <span class='hs-varid'>l</span>
<a name="line-134"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>bf</span> <span class='hs-varid'>a</span> <span class='hs-layout'>(</span><span class='hs-varid'>r</span><span class='hs-conop'>:</span><span class='hs-varid'>rs</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>r</span> <span class='hs-varop'>==</span> <span class='hs-varid'>c</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>reverse</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>rs</span><span class='hs-layout'>)</span>
<a name="line-135"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>bf</span> <span class='hs-layout'>(</span><span class='hs-varid'>r</span><span class='hs-conop'>:</span><span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-varid'>rs</span>
<a name="line-136"></a> <span class='hs-varid'>bf</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-137"></a><a name="breakLast"></a><span class='hs-definition'>breakLast</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Char</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>String</span><span class='hs-layout'>,</span><span class='hs-conid'>String</span><span class='hs-layout'>)</span>
<a name="line-138"></a><span class='hs-definition'>breakLast</span> <span class='hs-varid'>c</span> <span class='hs-varid'>l</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>breakFirst</span> <span class='hs-varid'>c</span> <span class='hs-layout'>(</span><span class='hs-varid'>reverse</span> <span class='hs-varid'>l</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-139"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Nothing</span>
<a name="line-140"></a> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>a</span><span class='hs-layout'>,</span><span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Just</span> <span class='hs-layout'>(</span><span class='hs-varid'>reverse</span> <span class='hs-varid'>b</span><span class='hs-layout'>,</span> <span class='hs-varid'>reverse</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span>
<a name="line-141"></a>
<a name="line-142"></a><a name="///"></a><span class='hs-layout'>(</span><span class='hs-varop'>///</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FileName</span>
<a name="line-143"></a><span class='hs-layout'>(</span><span class='hs-conid'>FN</span> <span class='hs-str'>""</span><span class='hs-layout'>)</span><span class='hs-varop'>///</span><span class='hs-varid'>b</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>normPath</span> <span class='hs-varid'>b</span>
<a name="line-144"></a><a name="a"></a><span class='hs-definition'>a</span><span class='hs-varop'>///</span><span class='hs-varid'>b</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>normPath</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fp2fn</span> <span class='hs-varop'>$</span> <span class='hs-varid'>fn2fp</span> <span class='hs-varid'>a</span> <span class='hs-varop'>++</span> <span class='hs-str'>"/"</span> <span class='hs-varop'>++</span> <span class='hs-varid'>fn2fp</span> <span class='hs-varid'>b</span>
<a name="line-145"></a>
<a name="line-146"></a><a name="isParentOrEqOf"></a><span class='hs-definition'>isParentOrEqOf</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Bool</span>
<a name="line-147"></a><span class='hs-definition'>isParentOrEqOf</span> <span class='hs-varid'>fn1</span> <span class='hs-varid'>fn2</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>stripPrefix</span> <span class='hs-layout'>(</span><span class='hs-varid'>fn2fp</span> <span class='hs-varid'>fn1</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>fn2fp</span> <span class='hs-varid'>fn2</span><span class='hs-layout'>)</span> <span class='hs-keyword'>of</span>
<a name="line-148"></a> <span class='hs-conid'>Just</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-conid'>True</span>
<a name="line-149"></a> <span class='hs-conid'>Just</span> <span class='hs-conid'>[]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>True</span>
<a name="line-150"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>False</span>
<a name="line-151"></a>
<a name="line-152"></a><a name="movedirfilename"></a><span class='hs-definition'>movedirfilename</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FileName</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FileName</span>
<a name="line-153"></a><span class='hs-definition'>movedirfilename</span> <span class='hs-varid'>old</span> <span class='hs-varid'>new</span> <span class='hs-varid'>name</span> <span class='hs-keyglyph'>=</span>
<a name="line-154"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>name'</span> <span class='hs-varop'>==</span> <span class='hs-varid'>old'</span>
<a name="line-155"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>new</span>
<a name="line-156"></a> <span class='hs-keyword'>else</span> <span class='hs-keyword'>case</span> <span class='hs-varid'>stripPrefix</span> <span class='hs-varid'>old'</span> <span class='hs-varid'>name'</span> <span class='hs-keyword'>of</span>
<a name="line-157"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>rest</span><span class='hs-keyglyph'>@</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'>fp2fn</span> <span class='hs-varop'>$</span> <span class='hs-str'>"./"</span> <span class='hs-varop'>++</span> <span class='hs-varid'>new'</span> <span class='hs-varop'>++</span> <span class='hs-varid'>rest</span>
<a name="line-158"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>name</span>
<a name="line-159"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>old'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fn2fp</span> <span class='hs-varop'>$</span> <span class='hs-varid'>normPath</span> <span class='hs-varid'>old</span>
<a name="line-160"></a> <span class='hs-varid'>new'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fn2fp</span> <span class='hs-varop'>$</span> <span class='hs-varid'>normPath</span> <span class='hs-varid'>new</span>
<a name="line-161"></a> <span class='hs-varid'>name'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fn2fp</span> <span class='hs-varop'>$</span> <span class='hs-varid'>normPath</span> <span class='hs-varid'>name</span>
</pre></body>
</html>
