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<pre><a name="line-1"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span>
<a name="line-2"></a><span class='hs-comment'>-- |</span>
<a name="line-3"></a><span class='hs-comment'>-- Module : Distribution.Verbosity</span>
<a name="line-4"></a><span class='hs-comment'>-- Copyright : Ian Lynagh 2007</span>
<a name="line-5"></a><span class='hs-comment'>--</span>
<a name="line-6"></a><span class='hs-comment'>-- Maintainer : cabal-devel@haskell.org</span>
<a name="line-7"></a><span class='hs-comment'>-- Portability : portable</span>
<a name="line-8"></a><span class='hs-comment'>--</span>
<a name="line-9"></a><span class='hs-comment'>-- A simple 'Verbosity' type with associated utilities. There are 4 standard</span>
<a name="line-10"></a><span class='hs-comment'>-- verbosity levels from 'silent', 'normal', 'verbose' up to 'deafening'. This</span>
<a name="line-11"></a><span class='hs-comment'>-- is used for deciding what logging messages to print.</span>
<a name="line-12"></a>
<a name="line-13"></a><span class='hs-comment'>-- Verbosity for Cabal functions</span>
<a name="line-14"></a>
<a name="line-15"></a><span class='hs-comment'>{- Copyright (c) 2007, Ian Lynagh
<a name="line-16"></a>All rights reserved.
<a name="line-17"></a>
<a name="line-18"></a>Redistribution and use in source and binary forms, with or without
<a name="line-19"></a>modification, are permitted provided that the following conditions are
<a name="line-20"></a>met:
<a name="line-21"></a>
<a name="line-22"></a> * Redistributions of source code must retain the above copyright
<a name="line-23"></a> notice, this list of conditions and the following disclaimer.
<a name="line-24"></a>
<a name="line-25"></a> * Redistributions in binary form must reproduce the above
<a name="line-26"></a> copyright notice, this list of conditions and the following
<a name="line-27"></a> disclaimer in the documentation and/or other materials provided
<a name="line-28"></a> with the distribution.
<a name="line-29"></a>
<a name="line-30"></a> * Neither the name of Isaac Jones nor the names of other
<a name="line-31"></a> contributors may be used to endorse or promote products derived
<a name="line-32"></a> from this software without specific prior written permission.
<a name="line-33"></a>
<a name="line-34"></a>THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
<a name="line-35"></a>"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
<a name="line-36"></a>LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
<a name="line-37"></a>A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
<a name="line-38"></a>OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
<a name="line-39"></a>SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
<a name="line-40"></a>LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
<a name="line-41"></a>DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
<a name="line-42"></a>THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
<a name="line-43"></a>(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
<a name="line-44"></a>OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -}</span>
<a name="line-45"></a>
<a name="line-46"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Distribution</span><span class='hs-varop'>.</span><span class='hs-conid'>Verbosity</span> <span class='hs-layout'>(</span>
<a name="line-47"></a> <span class='hs-comment'>-- * Verbosity</span>
<a name="line-48"></a> <span class='hs-conid'>Verbosity</span><span class='hs-layout'>,</span>
<a name="line-49"></a> <span class='hs-varid'>silent</span><span class='hs-layout'>,</span> <span class='hs-varid'>normal</span><span class='hs-layout'>,</span> <span class='hs-varid'>verbose</span><span class='hs-layout'>,</span> <span class='hs-varid'>deafening</span><span class='hs-layout'>,</span>
<a name="line-50"></a> <span class='hs-varid'>moreVerbose</span><span class='hs-layout'>,</span> <span class='hs-varid'>lessVerbose</span><span class='hs-layout'>,</span>
<a name="line-51"></a> <span class='hs-varid'>intToVerbosity</span><span class='hs-layout'>,</span> <span class='hs-varid'>flagToVerbosity</span><span class='hs-layout'>,</span>
<a name="line-52"></a> <span class='hs-varid'>showForCabal</span><span class='hs-layout'>,</span> <span class='hs-varid'>showForGHC</span>
<a name="line-53"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-54"></a>
<a name="line-55"></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'>elemIndex</span><span class='hs-layout'>)</span>
<a name="line-56"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Distribution</span><span class='hs-varop'>.</span><span class='hs-conid'>ReadE</span>
<a name="line-57"></a>
<a name="line-58"></a><a name="Verbosity"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>Verbosity</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Silent</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Normal</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Verbose</span> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>Deafening</span>
<a name="line-59"></a> <span class='hs-keyword'>deriving</span> <span class='hs-layout'>(</span><span class='hs-conid'>Show</span><span class='hs-layout'>,</span> <span class='hs-conid'>Read</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> <span class='hs-conid'>Enum</span><span class='hs-layout'>,</span> <span class='hs-conid'>Bounded</span><span class='hs-layout'>)</span>
<a name="line-60"></a>
<a name="line-61"></a><a name="silent"></a><span class='hs-comment'>-- We shouldn't print /anything/ unless an error occurs in silent mode</span>
<a name="line-62"></a><span class='hs-definition'>silent</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Verbosity</span>
<a name="line-63"></a><span class='hs-definition'>silent</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Silent</span>
<a name="line-64"></a>
<a name="line-65"></a><a name="normal"></a><span class='hs-comment'>-- Print stuff we want to see by default</span>
<a name="line-66"></a><span class='hs-definition'>normal</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Verbosity</span>
<a name="line-67"></a><span class='hs-definition'>normal</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Normal</span>
<a name="line-68"></a>
<a name="line-69"></a><a name="verbose"></a><span class='hs-comment'>-- Be more verbose about what's going on</span>
<a name="line-70"></a><span class='hs-definition'>verbose</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Verbosity</span>
<a name="line-71"></a><span class='hs-definition'>verbose</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Verbose</span>
<a name="line-72"></a>
<a name="line-73"></a><a name="deafening"></a><span class='hs-comment'>-- Not only are we verbose ourselves (perhaps even noisier than when</span>
<a name="line-74"></a><span class='hs-comment'>-- being "verbose"), but we tell everything we run to be verbose too</span>
<a name="line-75"></a><span class='hs-definition'>deafening</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Verbosity</span>
<a name="line-76"></a><span class='hs-definition'>deafening</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Deafening</span>
<a name="line-77"></a>
<a name="line-78"></a><a name="moreVerbose"></a><span class='hs-definition'>moreVerbose</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Verbosity</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Verbosity</span>
<a name="line-79"></a><span class='hs-definition'>moreVerbose</span> <span class='hs-conid'>Silent</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Silent</span> <span class='hs-comment'>--silent should stay silent</span>
<a name="line-80"></a><span class='hs-definition'>moreVerbose</span> <span class='hs-conid'>Normal</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Verbose</span>
<a name="line-81"></a><span class='hs-definition'>moreVerbose</span> <span class='hs-conid'>Verbose</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Deafening</span>
<a name="line-82"></a><span class='hs-definition'>moreVerbose</span> <span class='hs-conid'>Deafening</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Deafening</span>
<a name="line-83"></a>
<a name="line-84"></a><a name="lessVerbose"></a><span class='hs-definition'>lessVerbose</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Verbosity</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Verbosity</span>
<a name="line-85"></a><span class='hs-definition'>lessVerbose</span> <span class='hs-conid'>Deafening</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Deafening</span>
<a name="line-86"></a><span class='hs-definition'>lessVerbose</span> <span class='hs-conid'>Verbose</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Normal</span>
<a name="line-87"></a><span class='hs-definition'>lessVerbose</span> <span class='hs-conid'>Normal</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Silent</span>
<a name="line-88"></a><span class='hs-definition'>lessVerbose</span> <span class='hs-conid'>Silent</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Silent</span>
<a name="line-89"></a>
<a name="line-90"></a><a name="intToVerbosity"></a><span class='hs-definition'>intToVerbosity</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Int</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Maybe</span> <span class='hs-conid'>Verbosity</span>
<a name="line-91"></a><span class='hs-definition'>intToVerbosity</span> <span class='hs-num'>0</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-conid'>Silent</span>
<a name="line-92"></a><span class='hs-definition'>intToVerbosity</span> <span class='hs-num'>1</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-conid'>Normal</span>
<a name="line-93"></a><span class='hs-definition'>intToVerbosity</span> <span class='hs-num'>2</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-conid'>Verbose</span>
<a name="line-94"></a><span class='hs-definition'>intToVerbosity</span> <span class='hs-num'>3</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Just</span> <span class='hs-conid'>Deafening</span>
<a name="line-95"></a><span class='hs-definition'>intToVerbosity</span> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>Nothing</span>
<a name="line-96"></a>
<a name="line-97"></a><a name="flagToVerbosity"></a><span class='hs-definition'>flagToVerbosity</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>ReadE</span> <span class='hs-conid'>Verbosity</span>
<a name="line-98"></a><span class='hs-definition'>flagToVerbosity</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>ReadE</span> <span class='hs-varop'>$</span> <span class='hs-keyglyph'>\</span><span class='hs-varid'>s</span> <span class='hs-keyglyph'>-></span>
<a name="line-99"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>reads</span> <span class='hs-varid'>s</span> <span class='hs-keyword'>of</span>
<a name="line-100"></a> <span class='hs-keyglyph'>[</span><span class='hs-layout'>(</span><span class='hs-varid'>i</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>
<a name="line-101"></a> <span class='hs-keyword'>case</span> <span class='hs-varid'>intToVerbosity</span> <span class='hs-varid'>i</span> <span class='hs-keyword'>of</span>
<a name="line-102"></a> <span class='hs-conid'>Just</span> <span class='hs-varid'>v</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Right</span> <span class='hs-varid'>v</span>
<a name="line-103"></a> <span class='hs-conid'>Nothing</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Left</span> <span class='hs-layout'>(</span><span class='hs-str'>"Bad verbosity: "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>show</span> <span class='hs-varid'>i</span> <span class='hs-varop'>++</span>
<a name="line-104"></a> <span class='hs-str'>". Valid values are 0..3"</span><span class='hs-layout'>)</span>
<a name="line-105"></a> <span class='hs-keyword'>_</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>Left</span> <span class='hs-layout'>(</span><span class='hs-str'>"Can't parse verbosity "</span> <span class='hs-varop'>++</span> <span class='hs-varid'>s</span><span class='hs-layout'>)</span>
<a name="line-106"></a>
<a name="line-107"></a><a name="showForCabal"></a><span class='hs-definition'>showForCabal</span><span class='hs-layout'>,</span> <span class='hs-varid'>showForGHC</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Verbosity</span> <span class='hs-keyglyph'>-></span> <span class='hs-conid'>String</span>
<a name="line-108"></a>
<a name="line-109"></a><span class='hs-definition'>showForCabal</span> <span class='hs-varid'>v</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>maybe</span> <span class='hs-layout'>(</span><span class='hs-varid'>error</span> <span class='hs-str'>"unknown verbosity"</span><span class='hs-layout'>)</span> <span class='hs-varid'>show</span> <span class='hs-varop'>$</span>
<a name="line-110"></a> <span class='hs-varid'>elemIndex</span> <span class='hs-varid'>v</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>silent</span><span class='hs-layout'>,</span><span class='hs-varid'>normal</span><span class='hs-layout'>,</span><span class='hs-varid'>verbose</span><span class='hs-layout'>,</span><span class='hs-varid'>deafening</span><span class='hs-keyglyph'>]</span>
<a name="line-111"></a><a name="showForGHC"></a><span class='hs-definition'>showForGHC</span> <span class='hs-varid'>v</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>maybe</span> <span class='hs-layout'>(</span><span class='hs-varid'>error</span> <span class='hs-str'>"unknown verbosity"</span><span class='hs-layout'>)</span> <span class='hs-varid'>show</span> <span class='hs-varop'>$</span>
<a name="line-112"></a> <span class='hs-varid'>elemIndex</span> <span class='hs-varid'>v</span> <span class='hs-keyglyph'>[</span><span class='hs-varid'>silent</span><span class='hs-layout'>,</span><span class='hs-varid'>normal</span><span class='hs-layout'>,</span><span class='hs-sel'>__</span><span class='hs-layout'>,</span><span class='hs-varid'>verbose</span><span class='hs-layout'>,</span><span class='hs-varid'>deafening</span><span class='hs-keyglyph'>]</span>
<a name="line-113"></a> <span class='hs-keyword'>where</span> <span class='hs-sel'>__</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>silent</span> <span class='hs-comment'>-- this will be always ignored by elemIndex</span>
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