<?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/Diff.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) 2009 Petr Rockai</span> <a name="line-2"></a><span class='hs-comment'>--</span> <a name="line-3"></a><span class='hs-comment'>-- Permission is hereby granted, free of charge, to any person</span> <a name="line-4"></a><span class='hs-comment'>-- obtaining a copy of this software and associated documentation</span> <a name="line-5"></a><span class='hs-comment'>-- files (the "Software"), to deal in the Software without</span> <a name="line-6"></a><span class='hs-comment'>-- restriction, including without limitation the rights to use, copy,</span> <a name="line-7"></a><span class='hs-comment'>-- modify, merge, publish, distribute, sublicense, and/or sell copies</span> <a name="line-8"></a><span class='hs-comment'>-- of the Software, and to permit persons to whom the Software is</span> <a name="line-9"></a><span class='hs-comment'>-- furnished to do so, subject to the following conditions:</span> <a name="line-10"></a><span class='hs-comment'>--</span> <a name="line-11"></a><span class='hs-comment'>-- The above copyright notice and this permission notice shall be</span> <a name="line-12"></a><span class='hs-comment'>-- included in all copies or substantial portions of the Software.</span> <a name="line-13"></a><span class='hs-comment'>--</span> <a name="line-14"></a><span class='hs-comment'>-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,</span> <a name="line-15"></a><span class='hs-comment'>-- EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF</span> <a name="line-16"></a><span class='hs-comment'>-- MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND</span> <a name="line-17"></a><span class='hs-comment'>-- NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS</span> <a name="line-18"></a><span class='hs-comment'>-- BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN</span> <a name="line-19"></a><span class='hs-comment'>-- ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN</span> <a name="line-20"></a><span class='hs-comment'>-- CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE</span> <a name="line-21"></a><span class='hs-comment'>-- SOFTWARE.</span> <a name="line-22"></a> <a name="line-23"></a><span class='hs-comment'>-- |</span> <a name="line-24"></a><span class='hs-comment'>-- Module : Darcs.Diff</span> <a name="line-25"></a><span class='hs-comment'>-- Copyright : 2009 Petr Rockai</span> <a name="line-26"></a><span class='hs-comment'>-- License : MIT</span> <a name="line-27"></a><span class='hs-comment'>-- Maintainer : darcs-devel@darcs.net</span> <a name="line-28"></a><span class='hs-comment'>-- Stability : experimental</span> <a name="line-29"></a><span class='hs-comment'>-- Portability : portable</span> <a name="line-30"></a> <a name="line-31"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Diff</span> <a name="line-32"></a> <span class='hs-layout'>(</span> <a name="line-33"></a> <span class='hs-varid'>treeDiff</span> <a name="line-34"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span> <a name="line-35"></a> <a name="line-36"></a> <a name="line-37"></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'>Lazy</span><span class='hs-varop'>.</span><span class='hs-conid'>Char8</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>BLC</span> <a name="line-38"></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'>BS</span> <a name="line-39"></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'>Lazy</span> <span class='hs-keyword'>as</span> <span class='hs-conid'>BL</span> <a name="line-40"></a> <a name="line-41"></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'>sortBy</span> <span class='hs-layout'>)</span> <a name="line-42"></a> <a name="line-43"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Storage</span><span class='hs-varop'>.</span><span class='hs-conid'>Hashed</span><span class='hs-varop'>.</span><span class='hs-conid'>Tree</span> <span class='hs-layout'>(</span> <span class='hs-varid'>diffTrees</span> <a name="line-44"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>zipTrees</span> <a name="line-45"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>TreeItem</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span> <a name="line-46"></a> <span class='hs-layout'>,</span> <span class='hs-conid'>Tree</span> <a name="line-47"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>readBlob</span> <a name="line-48"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>emptyBlob</span> <a name="line-49"></a> <span class='hs-layout'>)</span> <a name="line-50"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Storage</span><span class='hs-varop'>.</span><span class='hs-conid'>Hashed</span><span class='hs-varop'>.</span><span class='hs-conid'>AnchoredPath</span><span class='hs-layout'>(</span> <span class='hs-conid'>AnchoredPath</span><span class='hs-layout'>,</span> <span class='hs-varid'>anchorPath</span> <span class='hs-layout'>)</span> <a name="line-51"></a> <a name="line-52"></a> <a name="line-53"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>ByteStringUtils</span> <span class='hs-layout'>(</span> <span class='hs-varid'>isFunky</span> <span class='hs-layout'>)</span> <a name="line-54"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Patch</span> <span class='hs-layout'>(</span> <span class='hs-conid'>PrimPatch</span> <a name="line-55"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>hunk</span> <a name="line-56"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>canonize</span> <a name="line-57"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>binary</span> <a name="line-58"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>addfile</span> <a name="line-59"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>rmfile</span> <a name="line-60"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>adddir</span> <a name="line-61"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>rmdir</span> <a name="line-62"></a> <span class='hs-layout'>,</span> <span class='hs-varid'>invert</span> <a name="line-63"></a> <span class='hs-layout'>)</span> <a name="line-64"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Repository</span><span class='hs-varop'>.</span><span class='hs-conid'>Prefs</span> <span class='hs-layout'>(</span> <span class='hs-conid'>FileType</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span> <a name="line-65"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Witnesses</span><span class='hs-varop'>.</span><span class='hs-conid'>Ordered</span> <span class='hs-layout'>(</span> <span class='hs-conid'>FL</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span> <a name="line-66"></a> <span class='hs-layout'>,</span> <span class='hs-layout'>(</span><span class='hs-varop'>+>+</span><span class='hs-layout'>)</span> <a name="line-67"></a> <span class='hs-layout'>)</span> <a name="line-68"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Witnesses</span><span class='hs-varop'>.</span><span class='hs-conid'>Sealed</span> <span class='hs-layout'>(</span> <span class='hs-conid'>Gap</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span> <span class='hs-layout'>)</span> <a name="line-69"></a> <a name="line-70"></a> <a name="line-71"></a><span class='hs-cpp'>#include "gadts.h"</span> <a name="line-72"></a><span class='hs-cpp'>#include "impossible.h"</span> <a name="line-73"></a> <a name="line-74"></a> <a name="line-75"></a><a name="Diff"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Diff</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Added</span> <span class='hs-layout'>(</span><span class='hs-conid'>TreeItem</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <a name="line-76"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Removed</span> <span class='hs-layout'>(</span><span class='hs-conid'>TreeItem</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <a name="line-77"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Changed</span> <span class='hs-layout'>(</span><span class='hs-conid'>TreeItem</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>TreeItem</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <a name="line-78"></a> <a name="line-79"></a> <a name="line-80"></a><a name="getDiff"></a><span class='hs-definition'>getDiff</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>AnchoredPath</span> <a name="line-81"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>TreeItem</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <a name="line-82"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span><span class='hs-conid'>TreeItem</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <a name="line-83"></a> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>AnchoredPath</span><span class='hs-layout'>,</span> <span class='hs-conid'>Diff</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <a name="line-84"></a><span class='hs-definition'>getDiff</span> <span class='hs-varid'>p</span> <span class='hs-conid'>Nothing</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>Added</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <a name="line-85"></a><span class='hs-definition'>getDiff</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>from</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>to</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>Changed</span> <span class='hs-varid'>from</span> <span class='hs-varid'>to</span><span class='hs-layout'>)</span> <a name="line-86"></a><span class='hs-definition'>getDiff</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-conid'>Just</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>p</span><span class='hs-layout'>,</span> <span class='hs-conid'>Removed</span> <span class='hs-varid'>t</span><span class='hs-layout'>)</span> <a name="line-87"></a><span class='hs-definition'>getDiff</span> <span class='hs-keyword'>_</span> <span class='hs-conid'>Nothing</span> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>impossible</span> <span class='hs-comment'>-- zipTrees should never return this</span> <a name="line-88"></a> <a name="line-89"></a> <a name="line-90"></a><a name="treeDiff"></a><span class='hs-definition'>treeDiff</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyword'>forall</span> <span class='hs-varid'>m</span> <span class='hs-varid'>w</span> <span class='hs-varid'>prim</span> <span class='hs-varop'>.</span> <span class='hs-layout'>(</span><span class='hs-conid'>Functor</span> <span class='hs-varid'>m</span><span class='hs-layout'>,</span> <span class='hs-conid'>Monad</span> <span class='hs-varid'>m</span><span class='hs-layout'>,</span> <span class='hs-conid'>Gap</span> <span class='hs-varid'>w</span><span class='hs-layout'>,</span> <span class='hs-conid'>PrimPatch</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span> <a name="line-91"></a> <span class='hs-keyglyph'>=></span> <span class='hs-layout'>(</span><span class='hs-conid'>FilePath</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>FileType</span><span class='hs-layout'>)</span> <a name="line-92"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Tree</span> <span class='hs-varid'>m</span> <a name="line-93"></a> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Tree</span> <span class='hs-varid'>m</span> <a name="line-94"></a> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span> <span class='hs-layout'>(</span><span class='hs-conid'>FL</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <a name="line-95"></a><span class='hs-definition'>treeDiff</span> <span class='hs-varid'>ft</span> <span class='hs-varid'>t1</span> <span class='hs-varid'>t2</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <a name="line-96"></a> <span class='hs-layout'>(</span><span class='hs-varid'>from</span><span class='hs-layout'>,</span> <span class='hs-varid'>to</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>diffTrees</span> <span class='hs-varid'>t1</span> <span class='hs-varid'>t2</span> <a name="line-97"></a> <span class='hs-varid'>diffs</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>mapM</span> <span class='hs-layout'>(</span><span class='hs-varid'>uncurry</span> <span class='hs-varid'>diff</span><span class='hs-layout'>)</span> <span class='hs-varop'>$</span> <span class='hs-varid'>sortBy</span> <span class='hs-varid'>organise</span> <span class='hs-varop'>$</span> <span class='hs-varid'>zipTrees</span> <span class='hs-varid'>getDiff</span> <span class='hs-varid'>from</span> <span class='hs-varid'>to</span> <a name="line-98"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>foldr</span> <span class='hs-layout'>(</span><span class='hs-varid'>joinGap</span> <span class='hs-layout'>(</span><span class='hs-varop'>+>+</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>emptyGap</span> <span class='hs-conid'>NilFL</span><span class='hs-layout'>)</span> <span class='hs-varid'>diffs</span> <a name="line-99"></a> <span class='hs-keyword'>where</span> <a name="line-100"></a> <span class='hs-comment'>-- sort into removes, changes, adds, with removes in reverse-path order</span> <a name="line-101"></a> <span class='hs-comment'>-- and everything else in forward order</span> <a name="line-102"></a> <span class='hs-varid'>organise</span> <span class='hs-keyglyph'>::</span> <span class='hs-layout'>(</span><span class='hs-conid'>AnchoredPath</span><span class='hs-layout'>,</span> <span class='hs-conid'>Diff</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-layout'>(</span><span class='hs-conid'>AnchoredPath</span><span class='hs-layout'>,</span> <span class='hs-conid'>Diff</span> <span class='hs-varid'>m</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Ordering</span> <a name="line-103"></a> <a name="line-104"></a> <span class='hs-varid'>organise</span> <span class='hs-layout'>(</span><span class='hs-varid'>p1</span><span class='hs-layout'>,</span> <span class='hs-conid'>Changed</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span> <span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>p2</span><span class='hs-layout'>,</span> <span class='hs-conid'>Changed</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>compare</span> <span class='hs-varid'>p1</span> <span class='hs-varid'>p2</span> <a name="line-105"></a> <span class='hs-varid'>organise</span> <span class='hs-layout'>(</span><span class='hs-varid'>p1</span><span class='hs-layout'>,</span> <span class='hs-conid'>Added</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>p2</span><span class='hs-layout'>,</span> <span class='hs-conid'>Added</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>compare</span> <span class='hs-varid'>p1</span> <span class='hs-varid'>p2</span> <a name="line-106"></a> <span class='hs-varid'>organise</span> <span class='hs-layout'>(</span><span class='hs-varid'>p1</span><span class='hs-layout'>,</span> <span class='hs-conid'>Removed</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>p2</span><span class='hs-layout'>,</span> <span class='hs-conid'>Removed</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>compare</span> <span class='hs-varid'>p2</span> <span class='hs-varid'>p1</span> <a name="line-107"></a> <a name="line-108"></a> <span class='hs-varid'>organise</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span> <span class='hs-conid'>Removed</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>LT</span> <a name="line-109"></a> <span class='hs-varid'>organise</span> <span class='hs-keyword'>_</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span> <span class='hs-conid'>Removed</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>GT</span> <a name="line-110"></a> <a name="line-111"></a> <span class='hs-varid'>organise</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span> <span class='hs-conid'>Changed</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>LT</span> <a name="line-112"></a> <span class='hs-varid'>organise</span> <span class='hs-keyword'>_</span> <span class='hs-layout'>(</span><span class='hs-keyword'>_</span><span class='hs-layout'>,</span> <span class='hs-conid'>Changed</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>GT</span> <a name="line-113"></a> <a name="line-114"></a> <span class='hs-varid'>diff</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>AnchoredPath</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Diff</span> <span class='hs-varid'>m</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>m</span> <span class='hs-layout'>(</span><span class='hs-varid'>w</span> <span class='hs-layout'>(</span><span class='hs-conid'>FL</span> <span class='hs-varid'>prim</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <a name="line-115"></a> <span class='hs-varid'>diff</span> <span class='hs-keyword'>_</span> <span class='hs-layout'>(</span><span class='hs-conid'>Changed</span> <span class='hs-layout'>(</span><span class='hs-conid'>SubTree</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>SubTree</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'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>emptyGap</span> <span class='hs-conid'>NilFL</span><span class='hs-layout'>)</span> <a name="line-116"></a> <span class='hs-varid'>diff</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-conid'>Removed</span> <span class='hs-layout'>(</span><span class='hs-conid'>SubTree</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <a name="line-117"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>freeGap</span> <span class='hs-layout'>(</span><span class='hs-varid'>rmdir</span> <span class='hs-layout'>(</span><span class='hs-varid'>anchorPath</span> <span class='hs-str'>""</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-conop'>:>:</span> <span class='hs-conid'>NilFL</span><span class='hs-layout'>)</span> <a name="line-118"></a> <span class='hs-varid'>diff</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-conid'>Added</span> <span class='hs-layout'>(</span><span class='hs-conid'>SubTree</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <a name="line-119"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>freeGap</span> <span class='hs-layout'>(</span><span class='hs-varid'>adddir</span> <span class='hs-layout'>(</span><span class='hs-varid'>anchorPath</span> <span class='hs-str'>""</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-conop'>:>:</span> <span class='hs-conid'>NilFL</span><span class='hs-layout'>)</span> <a name="line-120"></a> <span class='hs-varid'>diff</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-conid'>Added</span> <span class='hs-varid'>b'</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>File</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <a name="line-121"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>diff'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>diff</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-conid'>Changed</span> <span class='hs-layout'>(</span><span class='hs-conid'>File</span> <span class='hs-varid'>emptyBlob</span><span class='hs-layout'>)</span> <span class='hs-varid'>b'</span><span class='hs-layout'>)</span> <a name="line-122"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>joinGap</span> <span class='hs-layout'>(</span><span class='hs-conop'>:>:</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>freeGap</span> <span class='hs-layout'>(</span><span class='hs-varid'>addfile</span> <span class='hs-layout'>(</span><span class='hs-varid'>anchorPath</span> <span class='hs-str'>""</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-varid'>diff'</span> <a name="line-123"></a> <span class='hs-varid'>diff</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-conid'>Removed</span> <span class='hs-varid'>a'</span><span class='hs-keyglyph'>@</span><span class='hs-layout'>(</span><span class='hs-conid'>File</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <a name="line-124"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>diff'</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>diff</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-conid'>Changed</span> <span class='hs-varid'>a'</span> <span class='hs-layout'>(</span><span class='hs-conid'>File</span> <span class='hs-varid'>emptyBlob</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <a name="line-125"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>joinGap</span> <span class='hs-layout'>(</span><span class='hs-varop'>+>+</span><span class='hs-layout'>)</span> <span class='hs-varid'>diff'</span> <span class='hs-layout'>(</span><span class='hs-varid'>freeGap</span> <span class='hs-layout'>(</span><span class='hs-varid'>rmfile</span> <span class='hs-layout'>(</span><span class='hs-varid'>anchorPath</span> <span class='hs-str'>""</span> <span class='hs-varid'>p</span><span class='hs-layout'>)</span> <span class='hs-conop'>:>:</span> <span class='hs-conid'>NilFL</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <a name="line-126"></a> <span class='hs-varid'>diff</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-conid'>Changed</span> <span class='hs-layout'>(</span><span class='hs-conid'>File</span> <span class='hs-varid'>a'</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-conid'>File</span> <span class='hs-varid'>b'</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <a name="line-127"></a> <span class='hs-keyword'>do</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readBlob</span> <span class='hs-varid'>a'</span> <a name="line-128"></a> <span class='hs-varid'>b</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>readBlob</span> <span class='hs-varid'>b'</span> <a name="line-129"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>path</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>anchorPath</span> <span class='hs-str'>""</span> <span class='hs-varid'>p</span> <a name="line-130"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>ft</span> <span class='hs-varid'>path</span> <span class='hs-keyword'>of</span> <a name="line-131"></a> <span class='hs-conid'>TextFile</span> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>no_bin</span> <span class='hs-varid'>a</span> <span class='hs-varop'>&&</span> <span class='hs-varid'>no_bin</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>-></span> <a name="line-132"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>text_diff</span> <span class='hs-varid'>path</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <a name="line-133"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>a</span> <span class='hs-varop'>/=</span> <span class='hs-varid'>b</span> <a name="line-134"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>freeGap</span> <span class='hs-layout'>(</span><span class='hs-varid'>binary</span> <span class='hs-varid'>path</span> <span class='hs-layout'>(</span><span class='hs-varid'>strict</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>strict</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <span class='hs-conop'>:>:</span> <span class='hs-conid'>NilFL</span><span class='hs-layout'>)</span> <a name="line-135"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>emptyGap</span> <span class='hs-conid'>NilFL</span> <a name="line-136"></a> <span class='hs-varid'>diff</span> <span class='hs-varid'>p</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fail</span> <span class='hs-varop'>$</span> <span class='hs-str'>"Missing case at path "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>p</span> <a name="line-137"></a> <a name="line-138"></a> <span class='hs-varid'>text_diff</span> <span class='hs-varid'>p</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <a name="line-139"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>BL</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span> <span class='hs-varid'>a</span> <span class='hs-varop'>&&</span> <span class='hs-conid'>BL</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>emptyGap</span> <span class='hs-conid'>NilFL</span> <a name="line-140"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>BL</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>freeGap</span> <span class='hs-layout'>(</span><span class='hs-varid'>diff_from_empty</span> <span class='hs-varid'>p</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <a name="line-141"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>BL</span><span class='hs-varop'>.</span><span class='hs-varid'>null</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>freeGap</span> <span class='hs-layout'>(</span><span class='hs-varid'>diff_to_empty</span> <span class='hs-varid'>p</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <a name="line-142"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>freeGap</span> <span class='hs-layout'>(</span><span class='hs-varid'>line_diff</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-varid'>linesB</span> <span class='hs-varid'>a</span><span class='hs-layout'>)</span> <span class='hs-layout'>(</span><span class='hs-varid'>linesB</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <a name="line-143"></a> <a name="line-144"></a> <span class='hs-varid'>line_diff</span> <span class='hs-varid'>p</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>canonize</span> <span class='hs-layout'>(</span><span class='hs-varid'>hunk</span> <span class='hs-varid'>p</span> <span class='hs-num'>1</span> <span class='hs-varid'>a</span> <span class='hs-varid'>b</span><span class='hs-layout'>)</span> <a name="line-145"></a> <a name="line-146"></a> <span class='hs-varid'>diff_to_empty</span> <span class='hs-varid'>p</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>BLC</span><span class='hs-varop'>.</span><span class='hs-varid'>last</span> <span class='hs-varid'>x</span> <span class='hs-varop'>==</span> <span class='hs-chr'>'\n'</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>line_diff</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-varid'>init</span> <span class='hs-varop'>$</span> <span class='hs-varid'>linesB</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-conid'>[]</span> <a name="line-147"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>line_diff</span> <span class='hs-varid'>p</span> <span class='hs-layout'>(</span><span class='hs-varid'>linesB</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>BS</span><span class='hs-varop'>.</span><span class='hs-varid'>empty</span><span class='hs-keyglyph'>]</span> <a name="line-148"></a> <a name="line-149"></a> <span class='hs-varid'>diff_from_empty</span> <span class='hs-varid'>p</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>invert</span> <span class='hs-layout'>(</span><span class='hs-varid'>diff_to_empty</span> <span class='hs-varid'>p</span> <span class='hs-varid'>x</span><span class='hs-layout'>)</span> <a name="line-150"></a> <a name="line-151"></a> <span class='hs-varid'>no_bin</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>not</span> <span class='hs-varop'>.</span> <span class='hs-varid'>isFunky</span> <span class='hs-varop'>.</span> <span class='hs-varid'>strict</span> <span class='hs-varop'>.</span> <span class='hs-conid'>BL</span><span class='hs-varop'>.</span><span class='hs-varid'>take</span> <span class='hs-num'>4096</span> <a name="line-152"></a> <a name="line-153"></a> <span class='hs-varid'>linesB</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>map</span> <span class='hs-varid'>strict</span> <span class='hs-varop'>.</span> <span class='hs-conid'>BLC</span><span class='hs-varop'>.</span><span class='hs-varid'>split</span> <span class='hs-chr'>'\n'</span> <a name="line-154"></a> <a name="line-155"></a> <span class='hs-varid'>strict</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>BS</span><span class='hs-varop'>.</span><span class='hs-varid'>concat</span> <span class='hs-varop'>.</span> <span class='hs-conid'>BL</span><span class='hs-varop'>.</span><span class='hs-varid'>toChunks</span> <a name="line-156"></a> </pre></body> </html>
