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<pre><a name="line-1"></a><span class='hs-comment'>{- arch-tag: ConfigParser lexer support
<a name="line-2"></a>Copyright (C) 2004, 2008 John Goerzen <jgoerzen@complete.org>
<a name="line-3"></a>
<a name="line-4"></a>This program is free software; you can redistribute it and/or modify
<a name="line-5"></a>it under the terms of the GNU Lesser General Public License as published by
<a name="line-6"></a>the Free Software Foundation; either version 2.1 of the License, or
<a name="line-7"></a>(at your option) any later version.
<a name="line-8"></a>
<a name="line-9"></a>This program is distributed in the hope that it will be useful,
<a name="line-10"></a>but WITHOUT ANY WARRANTY; without even the implied warranty of
<a name="line-11"></a>MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
<a name="line-12"></a>GNU Lesser General Public License for more details.
<a name="line-13"></a>
<a name="line-14"></a>You should have received a copy of the GNU Lesser General Public License
<a name="line-15"></a>along with this program; if not, write to the Free Software
<a name="line-16"></a>Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
<a name="line-17"></a>-}</span>
<a name="line-18"></a>
<a name="line-19"></a><span class='hs-comment'>{- |
<a name="line-20"></a> Module : Data.ConfigFile.Lexer
<a name="line-21"></a> Copyright : Copyright (C) 2004 John Goerzen
<a name="line-22"></a> License : GNU LGPL, version 2.1 or above
<a name="line-23"></a>
<a name="line-24"></a> Maintainer : John Goerzen <jgoerzen@complete.org>
<a name="line-25"></a> Stability : provisional
<a name="line-26"></a> Portability: portable
<a name="line-27"></a>
<a name="line-28"></a>Lexer support for "Data.ConfigFile". This module is not intended to be
<a name="line-29"></a>used directly by your programs.
<a name="line-30"></a>
<a name="line-31"></a>Copyright (c) 2004 John Goerzen, jgoerzen\@complete.org
<a name="line-32"></a>-}</span>
<a name="line-33"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Data</span><span class='hs-varop'>.</span><span class='hs-conid'>ConfigFile</span><span class='hs-varop'>.</span><span class='hs-conid'>Lexer</span>
<a name="line-34"></a><span class='hs-layout'>(</span>
<a name="line-35"></a> <span class='hs-comment'>-- -- * Temporary for testing</span>
<a name="line-36"></a> <span class='hs-comment'>--comment_chars, eol, optionsep, whitespace_chars, comment_line,</span>
<a name="line-37"></a> <span class='hs-comment'>--empty_line, sectheader_chars, sectheader, oname_chars, value_chars,</span>
<a name="line-38"></a> <span class='hs-comment'>--extension_line, optionkey, optionvalue, optionpair</span>
<a name="line-39"></a> <span class='hs-varid'>loken</span><span class='hs-layout'>,</span>
<a name="line-40"></a> <span class='hs-conid'>CPTok</span><span class='hs-layout'>(</span><span class='hs-keyglyph'>..</span><span class='hs-layout'>)</span>
<a name="line-41"></a><span class='hs-layout'>)</span> <span class='hs-keyword'>where</span>
<a name="line-42"></a>
<a name="line-43"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>ParserCombinators</span><span class='hs-varop'>.</span><span class='hs-conid'>Parsec</span>
<a name="line-44"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Text</span><span class='hs-varop'>.</span><span class='hs-conid'>ParserCombinators</span><span class='hs-varop'>.</span><span class='hs-conid'>Parsec</span><span class='hs-varop'>.</span><span class='hs-conid'>Utils</span>
<a name="line-45"></a>
<a name="line-46"></a><a name="CPTok"></a><span class='hs-keyword'>data</span> <span class='hs-conid'>CPTok</span> <span class='hs-keyglyph'>=</span> <span class='hs-conid'>IGNOREDATA</span>
<a name="line-47"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>NEWSECTION</span> <span class='hs-conid'>String</span>
<a name="line-48"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>NEWSECTION_EOF</span> <span class='hs-conid'>String</span>
<a name="line-49"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>EXTENSIONLINE</span> <span class='hs-conid'>String</span>
<a name="line-50"></a> <span class='hs-keyglyph'>|</span> <span class='hs-conid'>NEWOPTION</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-51"></a> <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'>Show</span><span class='hs-layout'>,</span> <span class='hs-conid'>Ord</span><span class='hs-layout'>)</span>
<a name="line-52"></a>
<a name="line-53"></a><a name="comment_chars"></a><span class='hs-definition'>comment_chars</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CharParser</span> <span class='hs-varid'>st</span> <span class='hs-conid'>Char</span>
<a name="line-54"></a><span class='hs-definition'>comment_chars</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>oneOf</span> <span class='hs-str'>"#;"</span>
<a name="line-55"></a><a name="eol"></a><span class='hs-definition'>eol</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>GenParser</span> <span class='hs-conid'>Char</span> <span class='hs-varid'>st</span> <span class='hs-conid'>String</span>
<a name="line-56"></a><span class='hs-definition'>eol</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>string</span> <span class='hs-str'>"\n"</span> <span class='hs-varop'><|></span> <span class='hs-varid'>string</span> <span class='hs-str'>"\r\n"</span> <span class='hs-varop'><|></span> <span class='hs-varid'>string</span> <span class='hs-str'>"\r"</span> <span class='hs-varop'><?></span> <span class='hs-str'>"End of line"</span>
<a name="line-57"></a><a name="eoleof"></a><span class='hs-definition'>eoleof</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>GenParser</span> <span class='hs-conid'>Char</span> <span class='hs-varid'>st</span> <span class='hs-conid'>()</span>
<a name="line-58"></a><span class='hs-definition'>eoleof</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>eof</span> <span class='hs-varop'><|></span> <span class='hs-keyword'>do</span> <span class='hs-layout'>{</span><span class='hs-varid'>eol</span><span class='hs-layout'>;</span> <span class='hs-varid'>return</span> <span class='hs-conid'>()</span><span class='hs-layout'>}</span>
<a name="line-59"></a><a name="optionsep"></a><span class='hs-definition'>optionsep</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>GenParser</span> <span class='hs-conid'>Char</span> <span class='hs-varid'>st</span> <span class='hs-conid'>Char</span>
<a name="line-60"></a><span class='hs-definition'>optionsep</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>oneOf</span> <span class='hs-str'>":="</span> <span class='hs-varop'><?></span> <span class='hs-str'>"option separator"</span>
<a name="line-61"></a><a name="whitespace_chars"></a><span class='hs-definition'>whitespace_chars</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>GenParser</span> <span class='hs-conid'>Char</span> <span class='hs-varid'>st</span> <span class='hs-conid'>Char</span>
<a name="line-62"></a><span class='hs-definition'>whitespace_chars</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>oneOf</span> <span class='hs-str'>" \t"</span> <span class='hs-varop'><?></span> <span class='hs-str'>"whitespace"</span>
<a name="line-63"></a><a name="comment_line"></a><span class='hs-definition'>comment_line</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>GenParser</span> <span class='hs-conid'>Char</span> <span class='hs-varid'>st</span> <span class='hs-conid'>()</span>
<a name="line-64"></a><span class='hs-definition'>comment_line</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>skipMany</span> <span class='hs-varid'>whitespace_chars</span>
<a name="line-65"></a> <span class='hs-varid'>comment_chars</span> <span class='hs-varop'><?></span> <span class='hs-str'>"start of comment"</span>
<a name="line-66"></a> <span class='hs-layout'>(</span><span class='hs-varid'>many</span> <span class='hs-varop'>$</span> <span class='hs-varid'>noneOf</span> <span class='hs-str'>"\r\n"</span><span class='hs-layout'>)</span> <span class='hs-varop'><?></span> <span class='hs-str'>"content of comment"</span>
<a name="line-67"></a> <span class='hs-varid'>eoleof</span>
<a name="line-68"></a><a name="eolstuff"></a><span class='hs-definition'>eolstuff</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>GenParser</span> <span class='hs-conid'>Char</span> <span class='hs-varid'>st</span> <span class='hs-conid'>()</span>
<a name="line-69"></a><span class='hs-definition'>eolstuff</span> <span class='hs-keyglyph'>=</span> <span class='hs-layout'>(</span><span class='hs-varid'>try</span> <span class='hs-varid'>comment_line</span><span class='hs-layout'>)</span> <span class='hs-varop'><|></span> <span class='hs-layout'>(</span><span class='hs-varid'>try</span> <span class='hs-varid'>empty_line</span><span class='hs-layout'>)</span>
<a name="line-70"></a><a name="empty_line"></a><span class='hs-definition'>empty_line</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>GenParser</span> <span class='hs-conid'>Char</span> <span class='hs-varid'>st</span> <span class='hs-conid'>()</span>
<a name="line-71"></a><span class='hs-definition'>empty_line</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>many</span> <span class='hs-varid'>whitespace_chars</span>
<a name="line-72"></a> <span class='hs-varid'>eoleof</span>
<a name="line-73"></a> <span class='hs-varop'><?></span> <span class='hs-str'>"empty line"</span>
<a name="line-74"></a><a name="sectheader_chars"></a><span class='hs-definition'>sectheader_chars</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CharParser</span> <span class='hs-varid'>st</span> <span class='hs-conid'>Char</span>
<a name="line-75"></a><span class='hs-definition'>sectheader_chars</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>noneOf</span> <span class='hs-str'>"]\r\n"</span>
<a name="line-76"></a><a name="sectheader"></a><span class='hs-definition'>sectheader</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>GenParser</span> <span class='hs-conid'>Char</span> <span class='hs-varid'>st</span> <span class='hs-conid'>String</span>
<a name="line-77"></a><span class='hs-definition'>sectheader</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>char</span> <span class='hs-chr'>'['</span>
<a name="line-78"></a> <span class='hs-varid'>sname</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>many1</span> <span class='hs-varop'>$</span> <span class='hs-varid'>sectheader_chars</span>
<a name="line-79"></a> <span class='hs-varid'>char</span> <span class='hs-chr'>']'</span>
<a name="line-80"></a> <span class='hs-varid'>eolstuff</span>
<a name="line-81"></a> <span class='hs-varid'>return</span> <span class='hs-varid'>sname</span>
<a name="line-82"></a> <span class='hs-varop'><?></span> <span class='hs-str'>"start of section"</span>
<a name="line-83"></a><a name="oname_chars"></a><span class='hs-definition'>oname_chars</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CharParser</span> <span class='hs-varid'>st</span> <span class='hs-conid'>Char</span>
<a name="line-84"></a><span class='hs-definition'>oname_chars</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>noneOf</span> <span class='hs-str'>":=\r\n"</span>
<a name="line-85"></a><a name="value_chars"></a><span class='hs-definition'>value_chars</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>CharParser</span> <span class='hs-varid'>st</span> <span class='hs-conid'>Char</span>
<a name="line-86"></a><span class='hs-definition'>value_chars</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>noneOf</span> <span class='hs-str'>"\r\n"</span>
<a name="line-87"></a><a name="extension_line"></a><span class='hs-definition'>extension_line</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>GenParser</span> <span class='hs-conid'>Char</span> <span class='hs-varid'>st</span> <span class='hs-conid'>String</span>
<a name="line-88"></a><span class='hs-definition'>extension_line</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>many1</span> <span class='hs-varid'>whitespace_chars</span>
<a name="line-89"></a> <span class='hs-varid'>c1</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>noneOf</span> <span class='hs-str'>"\r\n#;"</span>
<a name="line-90"></a> <span class='hs-varid'>remainder</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>many</span> <span class='hs-varid'>value_chars</span>
<a name="line-91"></a> <span class='hs-varid'>eolstuff</span>
<a name="line-92"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>c1</span> <span class='hs-conop'>:</span> <span class='hs-varid'>remainder</span><span class='hs-layout'>)</span>
<a name="line-93"></a>
<a name="line-94"></a><a name="optionkey"></a><span class='hs-definition'>optionkey</span><span class='hs-layout'>,</span> <span class='hs-varid'>optionvalue</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>GenParser</span> <span class='hs-conid'>Char</span> <span class='hs-varid'>st</span> <span class='hs-conid'>String</span>
<a name="line-95"></a><span class='hs-definition'>optionkey</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>many1</span> <span class='hs-varid'>oname_chars</span>
<a name="line-96"></a><a name="optionvalue"></a><span class='hs-definition'>optionvalue</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>many</span> <span class='hs-varid'>value_chars</span>
<a name="line-97"></a><a name="optionpair"></a><span class='hs-definition'>optionpair</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>GenParser</span> <span class='hs-conid'>Char</span> <span class='hs-varid'>st</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-98"></a><span class='hs-definition'>optionpair</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>key</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>optionkey</span>
<a name="line-99"></a> <span class='hs-varid'>optionsep</span>
<a name="line-100"></a> <span class='hs-varid'>value</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>optionvalue</span>
<a name="line-101"></a> <span class='hs-varid'>eolstuff</span>
<a name="line-102"></a> <span class='hs-varid'>return</span> <span class='hs-layout'>(</span><span class='hs-varid'>key</span><span class='hs-layout'>,</span> <span class='hs-varid'>value</span><span class='hs-layout'>)</span>
<a name="line-103"></a> <span class='hs-varop'><?></span> <span class='hs-str'>"key/value option"</span>
<a name="line-104"></a>
<a name="line-105"></a><a name="iloken"></a><span class='hs-definition'>iloken</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-layout'>(</span><span class='hs-conid'>GeneralizedToken</span> <span class='hs-conid'>CPTok</span><span class='hs-layout'>)</span>
<a name="line-106"></a><span class='hs-definition'>iloken</span> <span class='hs-keyglyph'>=</span>
<a name="line-107"></a> <span class='hs-comment'>-- Ignore these things</span>
<a name="line-108"></a> <span class='hs-varid'>try</span> <span class='hs-layout'>(</span><span class='hs-keyword'>do</span> <span class='hs-layout'>{</span><span class='hs-varid'>comment_line</span><span class='hs-layout'>;</span> <span class='hs-varid'>togtok</span> <span class='hs-varop'>$</span> <span class='hs-conid'>IGNOREDATA</span><span class='hs-layout'>}</span><span class='hs-layout'>)</span>
<a name="line-109"></a> <span class='hs-varop'><|></span> <span class='hs-varid'>try</span> <span class='hs-layout'>(</span><span class='hs-keyword'>do</span> <span class='hs-layout'>{</span><span class='hs-varid'>empty_line</span><span class='hs-layout'>;</span> <span class='hs-varid'>togtok</span> <span class='hs-varop'>$</span> <span class='hs-conid'>IGNOREDATA</span><span class='hs-layout'>}</span><span class='hs-layout'>)</span>
<a name="line-110"></a>
<a name="line-111"></a> <span class='hs-comment'>-- Real stuff</span>
<a name="line-112"></a> <span class='hs-varop'><|></span> <span class='hs-layout'>(</span><span class='hs-keyword'>do</span> <span class='hs-layout'>{</span><span class='hs-varid'>sname</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>sectheader</span><span class='hs-layout'>;</span> <span class='hs-varid'>togtok</span> <span class='hs-varop'>$</span> <span class='hs-conid'>NEWSECTION</span> <span class='hs-varid'>sname</span><span class='hs-layout'>}</span><span class='hs-layout'>)</span>
<a name="line-113"></a> <span class='hs-varop'><|></span> <span class='hs-varid'>try</span> <span class='hs-layout'>(</span><span class='hs-keyword'>do</span> <span class='hs-layout'>{</span><span class='hs-varid'>extension</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>extension_line</span><span class='hs-layout'>;</span> <span class='hs-varid'>togtok</span> <span class='hs-varop'>$</span> <span class='hs-conid'>EXTENSIONLINE</span> <span class='hs-varid'>extension</span><span class='hs-layout'>}</span><span class='hs-layout'>)</span>
<a name="line-114"></a> <span class='hs-varop'><|></span> <span class='hs-varid'>try</span> <span class='hs-layout'>(</span><span class='hs-keyword'>do</span> <span class='hs-layout'>{</span><span class='hs-varid'>pair</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>optionpair</span><span class='hs-layout'>;</span> <span class='hs-varid'>togtok</span> <span class='hs-varop'>$</span> <span class='hs-conid'>NEWOPTION</span> <span class='hs-varid'>pair</span><span class='hs-layout'>}</span><span class='hs-layout'>)</span>
<a name="line-115"></a><span class='hs-comment'>-- <?> "Invalid syntax in configuration file"</span>
<a name="line-116"></a>
<a name="line-117"></a><a name="loken"></a><span class='hs-definition'>loken</span> <span class='hs-keyglyph'>::</span> <span class='hs-conid'>Parser</span> <span class='hs-keyglyph'>[</span><span class='hs-conid'>GeneralizedToken</span> <span class='hs-conid'>CPTok</span><span class='hs-keyglyph'>]</span>
<a name="line-118"></a><span class='hs-definition'>loken</span> <span class='hs-keyglyph'>=</span> <span class='hs-keyword'>do</span> <span class='hs-varid'>x</span> <span class='hs-keyglyph'><-</span> <span class='hs-varid'>manyTill</span> <span class='hs-varid'>iloken</span> <span class='hs-varid'>eof</span>
<a name="line-119"></a> <span class='hs-varid'>return</span> <span class='hs-varop'>$</span> <span class='hs-varid'>filter</span> <span class='hs-layout'>(</span><span class='hs-keyglyph'>\</span><span class='hs-varid'>y</span> <span class='hs-keyglyph'>-></span> <span class='hs-varid'>snd</span> <span class='hs-varid'>y</span> <span class='hs-varop'>/=</span> <span class='hs-conid'>IGNOREDATA</span><span class='hs-layout'>)</span> <span class='hs-varid'>x</span>
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