1 {- offlineimap component
2 Copyright (C) 2008 John Goerzen <jgoerzen@complete.org>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 module Network.IMAP.Parser.Prim where
20 import Text.ParserCombinators.Parsec
21 import Network.IMAP.Types
23 type IMAPParser a = CharParser () a
25 ----------------------------------------------------------------------
26 -- RFC 2234 (ABNF) declarations
27 ----------------------------------------------------------------------
31 ctl = '\x7f' : ['\x00'..'\x1f']
44 digit2234 = ['0'..'9']
48 hexdig = digit2234 ++ ['A'..'F']
52 alpha = ['A'..'Z'] ++ ['a'..'z']
60 char2234 = ['\x01'..'\x7f']
68 ----------------------------------------------------------------------
69 -- RFC 3501 primitives
70 ----------------------------------------------------------------------
73 atomSpecials :: String
74 atomSpecials = "(){ " ++ ctl ++ listWildcards ++ quotedSpecials ++ respSpecials
76 listWildcards :: String
79 quotedSpecials :: String
80 quotedSpecials = ['\\', dquote]
82 respSpecials :: String
85 ----------------------------------------------------------------------
86 -- Parsec RFC 3501 primitives
87 ----------------------------------------------------------------------
89 -- | Technically, <any CHAR except atom-specials> but we will
90 -- be more permissive.
92 -- FIXME: not stated in RFC, but perhaps CRLF is also excluded?
93 atomChar :: IMAPParser Char
94 atomChar = noneOf atomSpecials
96 atom :: IMAPParser String
99 astringChar :: IMAPParser Char
100 astringChar = atomChar <|> oneOf respSpecials
102 astring :: IMAPParser String
103 astring = many1 astringChar <|> string3501
105 string3501 :: IMAPParser String
106 string3501 = quoted <|> literal
108 literal :: IMAPParser String
111 scount <- many1 digit
114 let icount = (read scount)::Int
117 quoted :: IMAPParser String
120 strdata <- many quotedChar
124 quotedChar :: IMAPParser Char
126 noneOf quotedSpecials <|> (do char '\\'
130 -- | Fixme: should exclude 8-bit data per RFC3501
131 textChar :: IMAPParser Char
132 textChar = noneOf crlf
134 text :: IMAPParser String
135 text = many1 textChar
137 tag :: IMAPParser String
139 where tagChar = (char '+' >> fail "No + for tag") <|>