<?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/ArgumentDefaults.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) 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-keyword'>module</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>ArgumentDefaults</span> <span class='hs-layout'>(</span> <span class='hs-varid'>getDefaultFlags</span> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span> <a name="line-19"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>Maybe</span> <span class='hs-layout'>(</span> <span class='hs-varid'>listToMaybe</span><span class='hs-layout'>,</span> <span class='hs-varid'>mapMaybe</span> <span class='hs-layout'>)</span> <a name="line-20"></a> <a name="line-21"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Arguments</span> <span class='hs-layout'>(</span> <span class='hs-conid'>DarcsFlag</span><span class='hs-layout'>,</span> <a name="line-22"></a> <span class='hs-varid'>atomicOptions</span><span class='hs-layout'>,</span> <span class='hs-conid'>DarcsAtomicOption</span><span class='hs-layout'>(</span> <span class='hs-keyglyph'>..</span> <span class='hs-layout'>)</span><span class='hs-layout'>,</span> <span class='hs-conid'>DarcsOption</span> <span class='hs-layout'>(</span> <span class='hs-keyglyph'>..</span> <span class='hs-layout'>)</span><span class='hs-layout'>,</span> <a name="line-23"></a> <span class='hs-varid'>applyDefaults</span><span class='hs-layout'>,</span> <a name="line-24"></a> <span class='hs-varid'>arein</span> <span class='hs-layout'>)</span> <a name="line-25"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Commands</span> <span class='hs-layout'>(</span> <span class='hs-conid'>CommandControl</span><span class='hs-layout'>(</span> <span class='hs-conid'>CommandData</span> <span class='hs-layout'>)</span><span class='hs-layout'>,</span> <a name="line-26"></a> <span class='hs-varid'>commandAlloptions</span> <span class='hs-layout'>)</span> <a name="line-27"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Darcs</span><span class='hs-varop'>.</span><span class='hs-conid'>Commands</span><span class='hs-varop'>.</span><span class='hs-conid'>Help</span> <span class='hs-layout'>(</span> <span class='hs-varid'>commandControlList</span> <span class='hs-layout'>)</span> <a name="line-28"></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-varid'>getGlobal</span><span class='hs-layout'>,</span> <span class='hs-varid'>getPreflist</span> <span class='hs-layout'>)</span> <a name="line-29"></a> <a name="line-30"></a><a name="getDefaultFlags"></a><span class='hs-definition'>getDefaultFlags</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'>DarcsOption</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>DarcsFlag</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>IO</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>DarcsFlag</span><span class='hs-keyglyph'>]</span> <a name="line-31"></a><span class='hs-definition'>getDefaultFlags</span> <span class='hs-varid'>com</span> <span class='hs-varid'>com_opts</span> <span class='hs-varid'>already</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <a name="line-32"></a> <span class='hs-varid'>repo_defs</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>defaultContent</span> <span class='hs-varop'>$</span> <span class='hs-varid'>getPreflist</span> <span class='hs-str'>"defaults"</span> <a name="line-33"></a> <span class='hs-varid'>global_defs</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>defaultContent</span> <span class='hs-varop'>$</span> <span class='hs-varid'>getGlobal</span> <span class='hs-str'>"defaults"</span> <a name="line-34"></a> <span class='hs-keyword'>let</span> <span class='hs-varid'>repo_flags</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>getFlagsFrom</span> <span class='hs-varid'>com</span> <span class='hs-varid'>com_opts</span> <span class='hs-varid'>already</span> <span class='hs-varid'>repo_defs</span> <a name="line-35"></a> <span class='hs-varid'>global_flags</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>getFlagsFrom</span> <span class='hs-varid'>com</span> <span class='hs-varid'>com_opts</span> <a name="line-36"></a> <span class='hs-layout'>(</span><span class='hs-varid'>already</span><span class='hs-varop'>++</span><span class='hs-varid'>repo_flags</span><span class='hs-layout'>)</span> <span class='hs-varid'>global_defs</span> <a name="line-37"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>applyDefaults</span> <span class='hs-varid'>com_opts</span> <span class='hs-comment'>-- hard-coded defaults (respects user preferences)</span> <a name="line-38"></a> <span class='hs-varop'>$</span> <span class='hs-varid'>repo_flags</span> <span class='hs-varop'>++</span> <span class='hs-varid'>global_flags</span> <span class='hs-comment'>-- user preferences</span> <a name="line-39"></a> <a name="line-40"></a><a name="getFlagsFrom"></a><span class='hs-definition'>getFlagsFrom</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'>DarcsOption</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>DarcsFlag</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</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><span class='hs-conid'>String</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>DarcsFlag</span><span class='hs-keyglyph'>]</span> <a name="line-41"></a><span class='hs-definition'>getFlagsFrom</span> <span class='hs-varid'>com</span> <span class='hs-varid'>com_opts</span> <span class='hs-varid'>already</span> <span class='hs-varid'>defs</span> <span class='hs-keyglyph'>=</span> <a name="line-42"></a> <span class='hs-varid'>options_for</span> <span class='hs-varid'>com_defs</span> <span class='hs-varid'>com_opts</span> <span class='hs-varid'>com_opts</span> <span class='hs-varop'>++</span> <a name="line-43"></a> <span class='hs-varid'>options_for</span> <span class='hs-varid'>all_defs</span> <span class='hs-varid'>com_opts</span> <span class='hs-varid'>all_opts</span> <a name="line-44"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>com_defs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>filter</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span> <span class='hs-layout'>(</span><span class='hs-varid'>c</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'>c</span> <span class='hs-varop'>==</span> <span class='hs-varid'>com</span><span class='hs-layout'>)</span> <span class='hs-varid'>defs</span> <a name="line-45"></a> <span class='hs-varid'>all_defs</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>filter</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span> <span class='hs-layout'>(</span><span class='hs-varid'>c</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'>c</span> <span class='hs-varop'>==</span> <span class='hs-str'>"ALL"</span><span class='hs-layout'>)</span> <span class='hs-varid'>defs</span> <a name="line-46"></a> <span class='hs-varid'>options_for</span> <span class='hs-varid'>d</span> <span class='hs-varid'>o</span> <span class='hs-varid'>ao</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>concatMap</span> <span class='hs-layout'>(</span><span class='hs-varid'>findOption</span> <span class='hs-varid'>o</span> <span class='hs-varid'>ao</span> <span class='hs-varid'>already</span><span class='hs-layout'>)</span> <span class='hs-varid'>d</span> <a name="line-47"></a> <span class='hs-varid'>all_opts</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>concatMap</span> <span class='hs-varid'>get_opts</span> <span class='hs-varid'>commandControlList</span> <a name="line-48"></a> <span class='hs-varid'>get_opts</span> <span class='hs-layout'>(</span><span class='hs-conid'>CommandData</span> <span class='hs-varid'>c</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>let</span> <span class='hs-layout'>(</span><span class='hs-varid'>o1</span><span class='hs-layout'>,</span> <span class='hs-varid'>o2</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>commandAlloptions</span> <span class='hs-varid'>c</span> <a name="line-49"></a> <span class='hs-keyword'>in</span> <span class='hs-varid'>o1</span> <span class='hs-varop'>++</span> <span class='hs-varid'>o2</span> <a name="line-50"></a> <span class='hs-varid'>get_opts</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>[]</span> <a name="line-51"></a> <a name="line-52"></a><a name="findOption"></a><span class='hs-definition'>findOption</span> <span class='hs-keyglyph'>::</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>DarcsOption</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>DarcsOption</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>DarcsFlag</span><span class='hs-keyglyph'>]</span> <span class='hs-keyglyph'>-></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><span class='hs-conid'>String</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>-></span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>DarcsFlag</span><span class='hs-keyglyph'>]</span> <a name="line-53"></a><span class='hs-definition'>findOption</span> <span class='hs-varid'>opts</span> <span class='hs-varid'>all_opts</span> <span class='hs-varid'>already</span> <span class='hs-layout'>(</span><span class='hs-varid'>c</span><span class='hs-layout'>,</span> <span class='hs-varid'>f</span><span class='hs-layout'>,</span> <span class='hs-varid'>d</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <a name="line-54"></a> <span class='hs-keyword'>if</span> <span class='hs-varid'>null</span> <span class='hs-varop'>$</span> <span class='hs-varid'>mapMaybe</span> <span class='hs-varid'>choose_option</span> <span class='hs-varid'>all_opts</span> <a name="line-55"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>error</span> <span class='hs-varop'>$</span> <span class='hs-str'>"Bad default option: command '"</span><span class='hs-varop'>++</span><span class='hs-varid'>c</span><span class='hs-varop'>++</span><span class='hs-str'>"' has no option '"</span><span class='hs-varop'>++</span><span class='hs-varid'>f</span><span class='hs-varop'>++</span><span class='hs-str'>"'."</span> <a name="line-56"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>concat</span> <span class='hs-varop'>$</span> <span class='hs-varid'>mapMaybe</span> <span class='hs-varid'>choose_option</span> <span class='hs-varid'>opts</span> <a name="line-57"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>choose_atomic_option</span> <span class='hs-layout'>(</span><span class='hs-conid'>DarcsNoArgOption</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>fls</span> <span class='hs-varid'>o</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <a name="line-58"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>f</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>fls</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>null</span> <span class='hs-varid'>d</span> <a name="line-59"></a> <span class='hs-keyword'>then</span> <span class='hs-conid'>Just</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>o</span><span class='hs-keyglyph'>]</span> <a name="line-60"></a> <span class='hs-keyword'>else</span> <span class='hs-varid'>error</span> <span class='hs-varop'>$</span> <span class='hs-str'>"Bad default option: '"</span><span class='hs-varop'>++</span><span class='hs-varid'>f</span> <a name="line-61"></a> <span class='hs-varop'>++</span><span class='hs-str'>"' takes no argument, but '"</span><span class='hs-varop'>++</span><span class='hs-varid'>d</span> <a name="line-62"></a> <span class='hs-varop'>++</span><span class='hs-str'>"' argument given."</span> <a name="line-63"></a> <span class='hs-varid'>choose_atomic_option</span> <span class='hs-layout'>(</span><span class='hs-conid'>DarcsArgOption</span> <span class='hs-keyword'>_</span> <span class='hs-varid'>fls</span> <span class='hs-varid'>o</span> <span class='hs-keyword'>_</span> <span class='hs-keyword'>_</span><span class='hs-layout'>)</span> <a name="line-64"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>f</span> <span class='hs-varop'>`elem`</span> <span class='hs-varid'>fls</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>if</span> <span class='hs-varid'>null</span> <span class='hs-varid'>d</span> <a name="line-65"></a> <span class='hs-keyword'>then</span> <span class='hs-varid'>error</span> <span class='hs-varop'>$</span> <span class='hs-str'>"Bad default option: '"</span><span class='hs-varop'>++</span><span class='hs-varid'>f</span> <a name="line-66"></a> <span class='hs-varop'>++</span><span class='hs-str'>"' requires an argument, but no "</span> <a name="line-67"></a> <span class='hs-varop'>++</span><span class='hs-str'>"argument given."</span> <a name="line-68"></a> <span class='hs-keyword'>else</span> <span class='hs-conid'>Just</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>o</span> <span class='hs-varid'>d</span><span class='hs-keyglyph'>]</span> <a name="line-69"></a> <span class='hs-varid'>choose_atomic_option</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span> <a name="line-70"></a> <span class='hs-varid'>choose_option</span> <span class='hs-varid'>o</span> <a name="line-71"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>o</span> <span class='hs-varop'>`arein`</span> <span class='hs-varid'>already</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-conid'>[]</span> <a name="line-72"></a> <span class='hs-keyglyph'>|</span> <span class='hs-varid'>otherwise</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>listToMaybe</span> <span class='hs-varop'>$</span> <span class='hs-varid'>mapMaybe</span> <span class='hs-varid'>choose_atomic_option</span> <span class='hs-varop'>$</span> <span class='hs-varid'>atomicOptions</span> <span class='hs-varid'>o</span> <a name="line-73"></a> <a name="line-74"></a><a name="defaultContent"></a><span class='hs-definition'>defaultContent</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>IO</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'>IO</span> <span class='hs-keyglyph'>[</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><span class='hs-conid'>String</span><span class='hs-layout'>)</span><span class='hs-keyglyph'>]</span> <a name="line-75"></a><span class='hs-definition'>defaultContent</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>fmap</span> <span class='hs-layout'>(</span><span class='hs-varid'>mapMaybe</span> <span class='hs-layout'>(</span><span class='hs-varid'>doline</span> <span class='hs-varop'>.</span> <span class='hs-varid'>words</span><span class='hs-layout'>)</span><span class='hs-layout'>)</span> <a name="line-76"></a> <span class='hs-keyword'>where</span> <span class='hs-varid'>doline</span> <span class='hs-layout'>(</span><span class='hs-varid'>c</span><span class='hs-conop'>:</span><span class='hs-varid'>a</span><span class='hs-conop'>:</span><span class='hs-varid'>r</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'>c</span><span class='hs-layout'>,</span> <span class='hs-varid'>drop_dashdash</span> <span class='hs-varid'>a</span><span class='hs-layout'>,</span> <span class='hs-varid'>unwords</span> <span class='hs-varid'>r</span><span class='hs-layout'>)</span> <a name="line-77"></a> <span class='hs-varid'>doline</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span> <a name="line-78"></a> <span class='hs-varid'>drop_dashdash</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'>a</span><span class='hs-layout'>)</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span> <a name="line-79"></a> <span class='hs-varid'>drop_dashdash</span> <span class='hs-varid'>a</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>a</span> </pre></body> 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