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|
#
# parser.y
#
# Copyright (c) 1998-2007 Minero Aoki
#
# This program is free software.
# You can distribute/modify this program under the terms of
# the GNU Lesser General Public License version 2.1.
#
class TMail::Parser
options no_result_var
rule
content : DATETIME datetime { val[1] }
| RECEIVED received { val[1] }
| MADDRESS addrs_TOP { val[1] }
| RETPATH retpath { val[1] }
| KEYWORDS keys { val[1] }
| ENCRYPTED enc { val[1] }
| MIMEVERSION version { val[1] }
| CTYPE ctype { val[1] }
| CENCODING cencode { val[1] }
| CDISPOSITION cdisp { val[1] }
| ADDRESS addr_TOP { val[1] }
| MAILBOX mbox { val[1] }
datetime : day DIGIT ATOM DIGIT hour zone
# 0 1 2 3 4 5
# date month year
{
t = Time.gm(val[3].to_i, val[2], val[1].to_i, 0, 0, 0)
(t + val[4] - val[5]).localtime
}
day : /* none */
| ATOM ','
hour : DIGIT ':' DIGIT
{
(val[0].to_i * 60 * 60) +
(val[2].to_i * 60)
}
| DIGIT ':' DIGIT ':' DIGIT
{
(val[0].to_i * 60 * 60) +
(val[2].to_i * 60) +
(val[4].to_i)
}
zone : ATOM
{
timezone_string_to_unixtime(val[0])
}
received : from by via with id for received_datetime
{
val
}
from : /* none */
| FROM received_domain
{
val[1]
}
by : /* none */
| BY received_domain
{
val[1]
}
received_domain
: domain
{
join_domain(val[0])
}
| domain '@' domain
{
join_domain(val[2])
}
| domain DOMLIT
{
join_domain(val[0])
}
via : /* none */
| VIA ATOM
{
val[1]
}
with : /* none */
{
[]
}
| with WITH ATOM
{
val[0].push val[2]
val[0]
}
id : /* none */
| ID msgid
{
val[1]
}
| ID ATOM
{
val[1]
}
for : /* none */
| FOR received_addrspec
{
val[1]
}
received_addrspec
: routeaddr
{
val[0].spec
}
| spec
{
val[0].spec
}
received_datetime
: /* none */
| ';' datetime
{
val[1]
}
addrs_TOP : addrs
| group_bare
| addrs commas group_bare
addr_TOP : mbox
| group
| group_bare
retpath : addrs_TOP
| '<' '>' { [ Address.new(nil, nil) ] }
addrs : addr
{
val
}
| addrs commas addr
{
val[0].push val[2]
val[0]
}
addr : mbox
| group
mboxes : mbox
{
val
}
| mboxes commas mbox
{
val[0].push val[2]
val[0]
}
mbox : spec
| routeaddr
| addr_phrase routeaddr
{
val[1].phrase = Decoder.decode(val[0])
val[1]
}
group : group_bare ';'
group_bare: addr_phrase ':' mboxes
{
AddressGroup.new(val[0], val[2])
}
| addr_phrase ':' { AddressGroup.new(val[0], []) }
addr_phrase
: local_head { val[0].join('.') }
| addr_phrase local_head { val[0] << ' ' << val[1].join('.') }
routeaddr : '<' routes spec '>'
{
val[2].routes.replace val[1]
val[2]
}
| '<' spec '>'
{
val[1]
}
routes : at_domains ':'
at_domains: '@' domain { [ val[1].join('.') ] }
| at_domains ',' '@' domain { val[0].push val[3].join('.'); val[0] }
spec : local '@' domain { Address.new( val[0], val[2] ) }
| local { Address.new( val[0], nil ) }
local: local_head
| local_head '.' { val[0].push ''; val[0] }
local_head: word
{ val }
| local_head dots word
{
val[1].times do
val[0].push ''
end
val[0].push val[2]
val[0]
}
domain : domword
{ val }
| domain dots domword
{
val[1].times do
val[0].push ''
end
val[0].push val[2]
val[0]
}
dots : '.' { 0 }
| '.' '.' { 1 }
word : atom
| QUOTED
| DIGIT
domword : atom
| DOMLIT
| DIGIT
commas : ','
| commas ','
msgid : '<' spec '>'
{
val[1] = val[1].spec
val.join('')
}
keys : phrase { val }
| keys ',' phrase { val[0].push val[2]; val[0] }
phrase : word
| phrase word { val[0] << ' ' << val[1] }
enc : word
{
val.push nil
val
}
| word word
{
val
}
version : DIGIT '.' DIGIT
{
[ val[0].to_i, val[2].to_i ]
}
ctype : TOKEN '/' TOKEN params opt_semicolon
{
[ val[0].downcase, val[2].downcase, decode_params(val[3]) ]
}
| TOKEN params opt_semicolon
{
[ val[0].downcase, nil, decode_params(val[1]) ]
}
params : /* none */
{
{}
}
| params ';' TOKEN '=' QUOTED
{
val[0][ val[2].downcase ] = ('"' + val[4].to_s + '"')
val[0]
}
| params ';' TOKEN '=' TOKEN
{
val[0][ val[2].downcase ] = val[4]
val[0]
}
cencode : TOKEN
{
val[0].downcase
}
cdisp : TOKEN params opt_semicolon
{
[ val[0].downcase, decode_params(val[1]) ]
}
opt_semicolon
:
| ';'
atom : ATOM
| FROM
| BY
| VIA
| WITH
| ID
| FOR
end
---- header
#
# parser.rb
#
# Copyright (c) 1998-2007 Minero Aoki
#
# This program is free software.
# You can distribute/modify this program under the terms of
# the GNU Lesser General Public License version 2.1.
#
require 'tmail/scanner'
require 'tmail/utils'
---- inner
include TextUtils
def self.parse( ident, str, cmt = nil )
new.parse(ident, str, cmt)
end
MAILP_DEBUG = false
def initialize
self.debug = MAILP_DEBUG
end
def debug=( flag )
@yydebug = flag && Racc_debug_parser
@scanner_debug = flag
end
def debug
@yydebug
end
def parse( ident, str, comments = nil )
@scanner = Scanner.new(str, ident, comments)
@scanner.debug = @scanner_debug
@first = [ident, ident]
result = yyparse(self, :parse_in)
comments.map! {|c| to_kcode(c) } if comments
result
end
private
def parse_in( &block )
yield @first
@scanner.scan(&block)
end
def on_error( t, val, vstack )
raise SyntaxError, "parse error on token #{racc_token2str t}"
end
|