1 files changed, 97 insertions, 0 deletions
diff --git a/lua/lexers/vcard.lua b/lua/lexers/vcard.lua
new file mode 100644
index 0000000..2057451
--- /dev/null
+++ b/lua/lexers/vcard.lua
@@ -0,0 +1,97 @@
+-- Copyright (c) 2015 Piotr Orzechowski [drzewo.org]. See LICENSE.
+-- vCard 2.1, 3.0 and 4.0 LPeg lexer.
+
+local l = require('lexer')
+local token, word_match = l.token, l.word_match
+local P, R, S = lpeg.P, lpeg.R, lpeg.S
+
+local M = {_NAME = 'vcard'}
+
+-- Whitespace.
+local ws = token(l.WHITESPACE, l.space^1)
+
+-- Required properties.
+local required_property = token(l.KEYWORD, word_match({
+  'BEGIN', 'END', 'FN', 'N' --[[ Not required in v4.0. ]], 'VERSION'
+}, nil, true)) * #P(':')
+
+-- Supported properties.
+local supported_property = token(l.TYPE, word_match({
+  'ADR', 'AGENT' --[[ Not supported in v4.0. ]],
+  'ANNIVERSARY' --[[ Supported in v4.0 only. ]], 'BDAY',
+  'CALADRURI' --[[ Supported in v4.0 only. ]],
+  'CALURI' --[[ Supported in v4.0 only. ]], 'CATEGORIES',
+  'CLASS' --[[ Supported in v3.0 only. ]],
+  'CLIENTPIDMAP' --[[ Supported in v4.0 only. ]], 'EMAIL', 'END',
+  'FBURL' --[[ Supported in v4.0 only. ]],
+  'GENDER' --[[ Supported in v4.0 only. ]], 'GEO',
+  'IMPP' --[[ Not supported in v2.1. ]], 'KEY',
+  'KIND' --[[ Supported in v4.0 only. ]],
+  'LABEL' --[[ Not supported in v4.0. ]],
+  'LANG' --[[ Supported in v4.0 only. ]], 'LOGO',
+  'MAILER' --[[ Not supported in v4.0. ]],
+  'MEMBER' --[[ Supported in v4.0 only. ]],
+  'NAME' --[[ Supported in v3.0 only. ]],
+  'NICKNAME' --[[ Not supported in v2.1. ]], 'NOTE', 'ORG', 'PHOTO',
+  'PRODID' --[[ Not supported in v2.1. ]],
+  'PROFILE' --[[ Not supported in v4.0. ]],
+  'RELATED' --[[ Supported in v4.0 only. ]], 'REV', 'ROLE',
+  'SORT-STRING' --[[ Not supported in v4.0. ]], 'SOUND', 'SOURCE', 'TEL',
+  'TITLE', 'TZ', 'UID', 'URL', 'XML' --[[ Supported in v4.0 only. ]]
+}, nil, true)) * #S(':;')
+
+local identifier = l.alpha^1 * l.digit^0 * (P('-') * l.alnum^1)^0
+
+-- Extension.
+local extension = token(l.TYPE,
+                        l.starts_line(S('xX') * P('-') * identifier * #S(':;')))
+
+-- Parameter.
+local parameter = token(l.IDENTIFIER, l.starts_line(identifier * #S(':='))) +
+                  token(l.STRING, identifier) * #S(':=')
+
+-- Operators.
+local operator = token(l.OPERATOR, S('.:;='))
+
+-- Group and property.
+local group_sequence = token(l.CONSTANT, l.starts_line(identifier)) *
+                       token(l.OPERATOR, P('.')) *
+                       (required_property + supported_property +
+                        l.token(l.TYPE, S('xX') * P('-') * identifier) *
+                       #S(':;'))
+-- Begin vCard, end vCard.
+local begin_sequence = token(l.KEYWORD, P('BEGIN')) *
+                       token(l.OPERATOR, P(':')) * token(l.COMMENT, P('VCARD'))
+local end_sequence = token(l.KEYWORD, P('END')) * token(l.OPERATOR, P(':')) *
+                     token(l.COMMENT, P('VCARD'))
+
+-- vCard version (in v3.0 and v4.0 must appear immediately after BEGIN:VCARD).
+local version_sequence = token(l.KEYWORD, P('VERSION')) *
+                         token(l.OPERATOR, P(':')) *
+                         token(l.CONSTANT, l.digit^1 * (P('.') * l.digit^1)^-1)
+
+-- Data.
+local data = token(l.IDENTIFIER, l.any)
+
+-- Rules.
+M._rules = {
+  {'whitespace', ws},
+  {'begin_sequence', begin_sequence},
+  {'end_sequence', end_sequence},
+  {'version_sequence', version_sequence},
+  {'group_sequence', group_sequence},
+  {'required_property', required_property},
+  {'supported_property', supported_property},
+  {'extension', extension},
+  {'parameter', parameter},
+  {'operator', operator},
+  {'data', data},
+}
+
+-- Folding.
+M._foldsymbols = {
+  _patterns = {'BEGIN', 'END'},
+  [l.KEYWORD] = {['BEGIN'] = 1, ['END'] = -1}
+}
+
+return M