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-- Copyright 2006-2017 Mitchell mitchell.att.foicica.com. See LICENSE.
-- Markdown LPeg lexer.
-- Copyright 2020 Haelwenn (lanodan) Monnier <contact+gemini.lua@hacktivis.me>
-- Gemini / Gemtext LPeg lexer.
-- See https://gemini.circumlunar.space/docs/specification.html
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 = 'gemini'}
local ws = token(l.WHITESPACE, S(' \t')^1 + S('\v\r\n')^1)
local link = token('link', l.starts_line('=>') * l.nonnewline^0)
-- Should only match ``` at start of line
local pre = token('pre', l.delimited_range('```', false, true))
local header = token('h3', l.starts_line('###') * l.nonnewline^0) +
token('h2', l.starts_line('##') * l.nonnewline^0) +
token('h1', l.starts_line('#') * l.nonnewline^0)
local list = token('list', l.starts_line('*') * l.nonnewline^0)
local blockquote = token(l.STRING, l.starts_line('>') * l.nonnewline^0)
M._rules = {
{'header', header},
{'list', list},
{'blockquote', blockquote},
{'pre', pre},
{'whitespace', ws},
{'link', link}
}
local font_size = 10
local hstyle = 'fore:red'
M._tokenstyles = {
h3 = hstyle..',size:'..(font_size + 3),
h2 = hstyle..',size:'..(font_size + 4),
h1 = hstyle..',size:'..(font_size + 5),
pre = l.STYLE_EMBEDDED..',eolfilled',
link = 'underlined',
list = l.STYLE_CONSTANT
}
return M
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