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-rw-r--r--lexlua/gettext.lua31
1 files changed, 31 insertions, 0 deletions
diff --git a/lexlua/gettext.lua b/lexlua/gettext.lua
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+++ b/lexlua/gettext.lua
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+-- Copyright 2006-2018 Mitchell mitchell.att.foicica.com. See License.txt.
+-- Gettext LPeg lexer.
+
+local lexer = require('lexer')
+local token, word_match = lexer.token, lexer.word_match
+local P, R, S = lpeg.P, lpeg.R, lpeg.S
+
+local lex = lexer.new('gettext')
+
+-- Whitespace.
+lex:add_rule('whitespace', token(lexer.WHITESPACE, lexer.space^1))
+
+-- Keywords.
+lex:add_rule('keyword', token(lexer.KEYWORD, word_match([[
+ msgid msgid_plural msgstr fuzzy c-format no-c-format
+]], true)))
+
+-- Identifiers.
+lex:add_rule('identifier', token(lexer.IDENTIFIER, lexer.word))
+
+-- Variables.
+lex:add_rule('variable', token(lexer.VARIABLE, S('%$@') * lexer.word))
+
+-- Strings.
+lex:add_rule('string', token(lexer.STRING, lexer.delimited_range('"', true)))
+
+-- Comments.
+lex:add_rule('comment', token(lexer.COMMENT, '#' * S(': .~') *
+ lexer.nonnewline^0))
+
+return lex