42 lines
1.4 KiB
Ruby
42 lines
1.4 KiB
Ruby
# typed: true
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# frozen_string_literal: true
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require "kramdown/parser/kramdown"
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module Homebrew
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module Manpages
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module Parser
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# Kramdown parser with compatiblity for ronn variable syntax.
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class Ronn < ::Kramdown::Parser::Kramdown
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def initialize(*)
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super
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# Disable HTML parsing and replace it with variable parsing.
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# Also disable table parsing too because it depends on HTML parsing
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# and existing command descriptions may get misinterpreted as tables.
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# Typographic symbols is disabled as it detects `--` as en-dash.
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@block_parsers.delete(:block_html)
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@block_parsers.delete(:table)
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@span_parsers.delete(:span_html)
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@span_parsers.delete(:typographic_syms)
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@span_parsers << :variable
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end
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# HTML-like tags denote variables instead, except <br>.
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VARIABLE_REGEX = /<([\w\-\|]+)>/
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def parse_variable
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start_line_number = @src.current_line_number
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@src.scan(VARIABLE_REGEX)
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variable = @src[1]
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if variable == "br"
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@src.skip(/\n/)
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@tree.children << Element.new(:br, nil, nil, location: start_line_number)
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else
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@tree.children << Element.new(:variable, variable, nil, location: start_line_number)
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end
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end
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define_parser(:variable, VARIABLE_REGEX, "<")
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end
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end
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end
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end
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