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#########################################################################
#
# mairix - message index builder and finder for maildir folders.
#
# Copyright (C) Richard P. Curnow 2002-2004,2006
# Copyright (C) Jonathan Kamens 2010
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of version 2 of the GNU General Public License as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#
# =======================================================================
%{
#include "from.h"
%}
# Define tokens
# CR : \n
# DIGIT : [0-9]
# AT : @
# COLON : :
# WHITE : ' ', \t
# LOWER : [a-z]
# UPPER : [A-Z]
# PLUSMINUS : [+-]
# OTHER_EMAIL : other stuff valid in the LHS of an address
# DOMAIN : stuff valid in the RHS of an address
Abbrev LF = [\n]
Abbrev CR = [\r]
Abbrev DIGIT = [0-9]
Abbrev PERIOD = [.]
Abbrev AT = [@]
Abbrev LOWER = [a-z]
Abbrev UPPER = [A-Z]
Abbrev COLON = [:]
Abbrev WHITE = [ \t]
Abbrev PLUSMINUS = [+\-]
# Explained clearly at
# http://en.wikipedia.org/wiki/E-mail_address#RFC_specification
Abbrev OTHER_EMAIL = [.!#$%&'*/=?^_`{|}~]
Abbrev LT = [<]
Abbrev GT = [>]
Abbrev EMAIL = LOWER | UPPER | DIGIT | PLUSMINUS | OTHER_EMAIL
Abbrev OTHER_DOMAIN = [\-_.]
Abbrev DOMAIN = LOWER | UPPER | DIGIT | OTHER_DOMAIN
Abbrev DQUOTE = ["]
Abbrev OTHER_QUOTED = [@:<>]
Abbrev LEFTSQUARE = [[]
Abbrev RIGHTSQUARE = [\]]
BLOCK email {
STATE in
EMAIL -> in, before_at
DQUOTE -> quoted_before_at
AT -> domain_route
STATE domain_route
DOMAIN -> domain_route
COLON -> in
STATE quoted_before_at
EMAIL | WHITE | OTHER_QUOTED -> quoted_before_at
DQUOTE -> before_at
STATE before_at
EMAIL -> before_at
DQUOTE -> quoted_before_at
# Local part only : >=1 characters will suffice, which we've already
# matched.
-> out
AT -> start_of_domain
STATE start_of_domain
LEFTSQUARE -> dotted_quad
DOMAIN -> after_at
STATE dotted_quad
DIGIT | PERIOD -> dotted_quad
RIGHTSQUARE -> out
STATE after_at
DOMAIN -> after_at, out
}
BLOCK angled_email {
STATE in
LT -> in_angles
STATE in_angles
<email:in->out> -> before_gt
STATE before_gt
GT -> out
}
BLOCK zone {
# Make this pretty lenient
STATE in
UPPER -> zone2
UPPER -> out
PLUSMINUS -> zone2
STATE zone2
UPPER | LOWER -> zone2, out
DIGIT -> zone2, out
}
BLOCK date {
STATE in
WHITE -> in, before_weekday
STATE before_weekday
UPPER ; LOWER ; LOWER ; WHITE -> after_weekday
STATE after_weekday
WHITE -> after_weekday
UPPER ; LOWER ; LOWER ; WHITE -> after_month
STATE after_month
WHITE -> after_month
DIGIT ; WHITE -> after_day
DIGIT ; DIGIT ; WHITE -> after_day
STATE after_day
WHITE -> after_day
# Accept HH:MM:SS
DIGIT ; DIGIT ; COLON ; DIGIT ; DIGIT ; COLON ; DIGIT ; DIGIT ; WHITE -> after_time
# Accept HH:MM
DIGIT ; DIGIT ; COLON ; DIGIT ; DIGIT ; WHITE -> after_time
# Allow either 1 or 2 words of timezone
STATE after_time
WHITE -> after_time
-> after_timezone
<zone:in->out> ; WHITE -> after_timezone
<zone:in->out> ; WHITE -> after_timezone_1
# It appears that Pine puts the timezone after the year
DIGIT ; DIGIT ; DIGIT ; DIGIT -> after_year_before_zone
STATE after_year_before_zone
WHITE -> after_year_before_zone
<zone:in->out> -> after_timezone_after_year
<zone:in->out> ; WHITE -> after_timezone_after_year_1
STATE after_timezone_after_year_1
WHITE -> after_timezone_after_year_1
<zone:in->out> -> after_timezone_after_year
STATE after_timezone_after_year
WHITE -> after_timezone_after_year
-> out
STATE after_timezone_1
WHITE -> after_timezone_1
<zone:in->out> ; WHITE -> after_timezone
STATE after_timezone
WHITE -> after_timezone
DIGIT ; DIGIT ; DIGIT ; DIGIT -> after_year
STATE after_year
WHITE -> after_year
-> out
}
# Assume the earlier code has identified the '\nFrom ' sequence,
# and the validator starts scanning from the character beyond the space
BLOCK main {
STATE in
# Real return address.
WHITE -> in
<email:in->out> -> before_date
<angled_email:in->out> -> before_date
# Cope with Mozilla mbox folder format which just uses a '-' as
# the return address field.
PLUSMINUS -> before_date
# Empty return address
-> before_date
STATE before_date
<date:in->out> ; LF = FROMCHECK_PASS
# Cope with mozilla mbox format
<date:in->out> ; CR ; LF = FROMCHECK_PASS
# Mention this state last : the last mentioned state in the last defined
# block becomes the entry state of the scanner.
STATE in
}
ATTR FROMCHECK_PASS
ATTR FROMCHECK_FAIL
DEFATTR FROMCHECK_FAIL
PREFIX fromcheck
TYPE "enum fromcheck_result"
# vim:ft=txt:et:sw=4:sts=4:ht=4
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