Added optional Lua lexer support.

This support is disabled by default and must be enabled via compile-time option.

1 files changed, 31 insertions, 0 deletions

diff --git a/lexlua/gettext.lua b/lexlua/gettext.lua
new file mode 100644
index 000000000..5ff8c14d4
--- /dev/null
+++ b/lexlua/gettext.lua
@@ -0,0 +1,31 @@
+-- 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