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This commit is contained in:
parent
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8b63d77006
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@ -0,0 +1,13 @@
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Bold [x}
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Italics [x]
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Underline [x]
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Strikethrough [x]
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CodeInline [x]
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Link [x]
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Image [x]
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Headings [x]
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CodeBlock [x]
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QuoteBlock [x]
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ULBlock [x]
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OLBLock [x]
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TableBlock []
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@ -0,0 +1,738 @@
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# frozen_string_literal: true
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module RBMark
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# Parser units
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# Parsers are divided into three categories:
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# - Slicers - these parsers read the whole text of an element and slice it into chunks digestible by other parsers
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# - ChunkParsers - these parsers transform chunks of text into a single DOM unit
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# - InlineParsers - these parsers are called directly by the slicer to check whether a certain element matches needed criteria
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module Parsers
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# Abstract slicer class
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class Slicer
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# @param parent [::RBMark::DOM::DOMObject]
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def initialize
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@chunk_parsers = []
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end
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attr_accessor :chunk_parsers
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private
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def parse_chunk(text)
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@chunk_parsers.each do |parser|
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unless parser.is_a? ChunkParser
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raise StandardError, 'not a ChunkParser'
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end
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next unless parser.match?(text)
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return parser.match(text)
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end
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nil
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end
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end
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# Abstract inline parser class
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class InlineParser
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# Test if piece matches bold syntax
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# @param text [String]
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# @return [Boolean]
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def match?(text)
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text.match?(@match_exp)
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end
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# Construct a new object from text
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# @param text [String]
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# @return [Object]
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def match(text)
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@class.parse(text)
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end
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attr_reader :class, :match_exp
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end
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# Abstract chunk parser class
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class ChunkParser
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# Stub for match method
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def match(text)
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element = ::RBMark::DOM::Text.new
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element.content = text
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element
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end
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# Stub for match? method
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def match?(_text)
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true
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end
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end
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# Slices text into paragraphs and feeds slices to chunk parsers
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class RootSlicer < Slicer
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# Parse text into chunks and feed each to the chain
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# @param text [String]
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def parse(text)
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output = text.split(/(?:\r\r|\n\n|\r\n\r\n|\Z)/)
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.reject { |x| x.match(/\A\s*\Z/) }
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.map do |block|
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parse_chunk(block)
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end
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merge_list_indents(output)
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end
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private
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def merge_list_indents(chunks)
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last_list = nil
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delete_deferred = []
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chunks.each_with_index do |chunk, index|
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if !last_list and [::RBMark::DOM::ULBlock,
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::RBMark::DOM::OLBlock].include? chunk.class
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last_list = chunk
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elsif last_list and mergeable?(last_list, chunk)
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merge(last_list, chunk)
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delete_deferred.prepend(index)
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else
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last_list = nil
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end
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end
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delete_deferred.each { |i| chunks.delete_at(i) }
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chunks
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end
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def mergeable?(last_list, chunk)
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if chunk.is_a? ::RBMark::DOM::IndentBlock or
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(chunk.is_a? ::RBMark::DOM::ULBlock and
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last_list.is_a? ::RBMark::DOM::ULBlock) or
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(chunk.is_a? ::RBMark::DOM::OLBlock and
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last_list.is_a? ::RBMark::DOM::OLBlock and
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last_list.properties["num"] > chunk.properties["num"])
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true
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else
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false
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end
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end
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def merge(last_list, chunk)
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if chunk.is_a? ::RBMark::DOM::IndentBlock
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last_list.children.last.children.append(*chunk.children)
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else
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last_list.children.append(*chunk.children)
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end
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end
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end
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# Inline text slicer (slices based on the start and end symbols)
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class InlineSlicer < Slicer
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# Parse slices
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# @param text [String]
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def parse(text)
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parts = []
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index = prepare_markers
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until text.empty?
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before, part, text = slice(text)
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parts.append(::RBMark::DOM::Text.parse(before)) unless before.empty?
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next unless part
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element = index.fetch(part.regexp,
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::RBMark::Parsers::TextInlineParser.new)
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.match(part[0])
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parts.append(element)
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end
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parts
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end
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private
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# Prepare markers from chunk_parsers
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# @return [Hash]
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def prepare_markers
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index = {}
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@markers = @chunk_parsers.map do |parser|
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index[parser.match_exp] = parser
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parser.match_exp
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end
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index
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end
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# Get the next slice of a text based on markers
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# @param text [String]
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# @return [Array<(String,MatchData,String)>]
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def slice(text)
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first_tag = @markers.map { |x| text.match(x) }
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.reject(&:nil?)
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.min_by { |x| x.offset(0)[0] }
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return text, nil, "" unless first_tag
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[first_tag.pre_match, first_tag, first_tag.post_match]
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end
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end
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# Slicer for unordered lists
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class UnorderedSlicer < Slicer
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# Parse list elements
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def parse(text)
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output = []
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buffer = ""
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text.lines.each do |line|
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if line.start_with? "- " and !buffer.empty?
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output.append(make_element(buffer))
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buffer = ""
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end
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buffer += line[2..]
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end
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output.append(make_element(buffer)) unless buffer.empty?
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output
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end
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private
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def make_element(text)
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::RBMark::DOM::ListElement.parse(text)
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end
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end
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# Slicer for unordered lists
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class OrderedSlicer < Slicer
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# rubocop:disable Metrics/AbcSize
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# Parse list elements
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def parse(text)
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output = []
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buffer = ""
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indent = text.match(/\A\d+\. /)[0].length
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num = text.match(/\A(\d+)\. /)[1]
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text.lines.each do |line|
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if line.start_with?(/\d+\. /) and !buffer.empty?
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output.append(make_element(buffer, num))
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buffer = ""
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indent = line.match(/\A\d+\. /)[0].length
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num = line.match(/\A(\d+)\. /)[1]
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end
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buffer += line[indent..]
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end
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output.append(make_element(buffer, num)) unless buffer.empty?
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output
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end
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# rubocop:enable Metrics/AbcSize
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private
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def make_element(text, num)
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element = ::RBMark::DOM::ListElement.parse(text)
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element.property num: num.to_i
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element
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end
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end
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# Quote block parser
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class QuoteChunkParser < ChunkParser
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# Tests for chunk being a block quote
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# @param text [String]
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# @return [Boolean]
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def match?(text)
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text.lines.map do |x|
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x.match?(/\A\s*>(?:\s[^\n\r]+|)\Z/m)
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end.all?(true)
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end
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# Transforms text chunk into a block quote
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# @param text
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# @return [::RBMark::DOM::QuoteBlock]
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def match(text)
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text = text.lines.map do |x|
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x.match(/\A\s*>(\s[^\n\r]+|)\Z/m)[1].to_s[1..]
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end.join("\n")
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::RBMark::DOM::QuoteBlock.parse(text)
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end
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end
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# Paragraph block
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class ParagraphChunkParser < ChunkParser
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# Acts as a fallback for the basic paragraph chunk
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# @param text [String]
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# @return [Boolean]
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def match?(_text)
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true
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end
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# Creates a new paragraph with the given text
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def match(text)
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::RBMark::DOM::Paragraph.parse(text)
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end
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end
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# Code block
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class CodeChunkParser < ChunkParser
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# Check if a block matches the given parser rule
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# @param text [String]
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# @return [Boolean]
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def match?(text)
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text.match?(/\A```\w+[\r\n]{1,2}.*[\r\n]{1,2}```\Z/m)
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end
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# Create a new element
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def match(text)
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lang, code = text.match(
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/\A```(\w+)[\r\n]{1,2}(.*)[\r\n]{1,2}```\Z/m
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)[1, 2]
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element = ::RBMark::DOM::CodeBlock.new
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element.property language: lang
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element.content = code
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element
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end
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end
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# Heading chunk parser
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class HeadingChunkParser < ChunkParser
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# Check if a block matches the given parser rule
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# @param text [String]
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# @return [Boolean]
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def match?(text)
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text.match?(/\A\#{1,4}\s/)
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end
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# Create a new element
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def match(text)
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case text.match(/\A\#{1,4}\s/)[0]
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when "# " then ::RBMark::DOM::Heading1.parse(text[2..])
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when "## " then ::RBMark::DOM::Heading2.parse(text[3..])
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when "### " then ::RBMark::DOM::Heading3.parse(text[4..])
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when "#### " then ::RBMark::DOM::Heading4.parse(text[5..])
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end
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end
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end
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# Unordered list parser (chunk)
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class UnorderedChunkParser < ChunkParser
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# Check if a block matches the given parser rule
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# @param text [String]
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# @return [Boolean]
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def match?(text)
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return false unless text.start_with? "- "
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text.lines.map do |line|
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line.match?(/\A(?:- .*| .*| )\Z/)
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end.all?(true)
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end
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# Create a new element
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def match(text)
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::RBMark::DOM::ULBlock.parse(text)
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end
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end
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# Ordered list parser (chunk)
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class OrderedChunkParser < ChunkParser
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# Check if a block matches the given parser rule
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# @param text [String]
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# @return [Boolean]
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def match?(text)
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return false unless text.start_with?(/\d+\. /)
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indent = 0
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text.lines.each do |line|
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if line.start_with?(/\d+\. /)
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indent = line.match(/\A\d+\. /)[0].length
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elsif line.start_with?(/\s+/)
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return false if line.match(/\A\s+/)[0].length < indent
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else
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return false
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end
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end
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true
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end
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# Create a new element
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def match(text)
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::RBMark::DOM::OLBlock.parse(text)
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end
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end
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# Indented block parser
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class IndentChunkParser < ChunkParser
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# Check if a block matches the given parser rule
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# @param text [String]
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# @return [Boolean]
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def match?(text)
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text.lines.map do |x|
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x.start_with? " " or x.start_with? "\t"
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end.all?(true)
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end
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# Create a new element
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def match(text)
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text = text.lines.map { |x| x.match(/\A(?: {4}|\t)(.*)\Z/)[1] }
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.join("\n")
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::RBMark::DOM::IndentBlock.parse(text)
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end
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end
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# Stub text parser
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class TextInlineParser < InlineParser
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# Stub method for creating new Text object
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def match(text)
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instance = ::RBMark::DOM::Text.new
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instance.content = text
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instance
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end
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end
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# Bold text
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class BoldInlineParser < InlineParser
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def initialize
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super
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@match_exp = /(?<!\\)\*\*+.+?(?<!\\)\*+\*/
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end
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# Match element
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def match(text)
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::RBMark::DOM::InlineBold.parse(text[2..-3])
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end
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end
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# Italics text
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class ItalicsInlineParser < InlineParser
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def initialize
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super
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@match_exp = /(?<!\\)\*+.+?(?<!\\)\*+/
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end
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# Match element
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def match(text)
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::RBMark::DOM::InlineItalics.parse(text[1..-2])
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end
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end
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# Underlined text
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class UnderInlineParser < InlineParser
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def initialize
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super
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@match_exp = /(?<!\\)__+.+?(?<!\\)_+_/
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end
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# Match element
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def match(text)
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::RBMark::DOM::InlineUnder.parse(text[2..-3])
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end
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end
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# Strikethrough text
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class StrikeInlineParser < InlineParser
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def initialize
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super
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@match_exp = /(?<!\\)~~+.+?(?<!\\)~+~/
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end
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# Match element
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def match(text)
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::RBMark::DOM::InlineStrike.parse(text[2..-3])
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end
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end
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# Preformatted text
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class PreInlineParser < InlineParser
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def initialize
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super
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@match_exp = /(?<!\\)``+.+?(?<!\\)`+`/
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end
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# Match element
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def match(text)
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::RBMark::DOM::InlinePre.parse(text[2..-3])
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end
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end
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# Hyperreference link
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class LinkInlineParser < InlineParser
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def initialize
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super
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@match_exp = /(?<![\\!])\[(.+?(?<!\\))\]\((.+?(?<!\\))\)/
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end
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||||
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# Match element
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def match(text)
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title, link = text.match(@match_exp)[1..2]
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element = ::RBMark::DOM::InlineLink.new
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element.content = title
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element.property link: link
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element
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end
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end
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# Image
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class ImageInlineParser < InlineParser
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def initialize
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super
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@match_exp = /(?<!\\)!\[(.+?(?<!\\))\]\((.+?(?<!\\))\)/
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end
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||||
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# Match element
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||||
def match(text)
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title, link = text.match(@match_exp)[1..2]
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element = ::RBMark::DOM::InlineImage.new
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element.content = title
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element.property link: link
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element
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end
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||||
end
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||||
|
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# Linebreak
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class BreakInlineParser < InlineParser
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def initialize
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super
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@match_exp = /\s{2}/
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end
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|
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# Match element
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||||
def match(_text)
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element = ::RBMark::DOM::InlineBreak.new
|
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element.content = ""
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||||
element
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end
|
||||
end
|
||||
end
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|
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# Module for representing abstract object hierarchy
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module DOM
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# Abstract container
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class DOMObject
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class << self
|
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attr_accessor :parsers
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attr_reader :slicer
|
||||
|
||||
# Hook for initializing variables
|
||||
def inherited(subclass)
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||||
super
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||||
# Inheritance initialization
|
||||
subclass.slicer = @slicer if @slicer
|
||||
subclass.parsers = @parsers.dup if @parsers
|
||||
subclass.parsers ||= []
|
||||
end
|
||||
|
||||
# Initialize parsers for the current class
|
||||
def initialize_parsers
|
||||
@active_parsers = @parsers.map(&:new)
|
||||
@active_slicer = @slicer.new if @slicer
|
||||
end
|
||||
|
||||
# Add a slicer
|
||||
# @param parser [Object]
|
||||
def slicer=(parser)
|
||||
unless parser < ::RBMark::Parsers::Slicer
|
||||
raise StandardError, "#{x} is not a Slicer"
|
||||
end
|
||||
|
||||
@slicer = parser
|
||||
end
|
||||
|
||||
# Add a parser to the chain
|
||||
# @param parser [Object]
|
||||
def parser(parser)
|
||||
unless [::RBMark::Parsers::InlineParser,
|
||||
::RBMark::Parsers::ChunkParser].any? { |x| parser < x }
|
||||
raise StandardError, "#{x} is not an InlineParser or a ChunkParser"
|
||||
end
|
||||
|
||||
@parsers.append(parser)
|
||||
end
|
||||
|
||||
# Parse text from the given context
|
||||
# @param text [String]
|
||||
# @return [self]
|
||||
def parse(text)
|
||||
initialize_parsers
|
||||
container = new
|
||||
container.content = text
|
||||
_parse(container)
|
||||
container.content = "" unless container.is_a? ::RBMark::DOM::Text
|
||||
container
|
||||
end
|
||||
|
||||
private
|
||||
|
||||
def _parse(instance)
|
||||
return unless @active_slicer
|
||||
|
||||
@active_slicer.chunk_parsers = @active_parsers
|
||||
instance.children.append(*@active_slicer.parse(instance.content))
|
||||
end
|
||||
end
|
||||
|
||||
def initialize
|
||||
@content = nil
|
||||
@children = []
|
||||
@properties = {}
|
||||
end
|
||||
|
||||
# Set certain property in the properties hash
|
||||
# @param properties [Hash] proeprties to update
|
||||
def property(**properties)
|
||||
@properties.update(**properties)
|
||||
end
|
||||
|
||||
# Add child to container
|
||||
# @param child [DOMObject]
|
||||
def append(*children)
|
||||
unless children.all? { |x| x.is_a? DOMObject }
|
||||
raise StandardError, "#{x} is not a DOMObject"
|
||||
end
|
||||
|
||||
@children.append(*children)
|
||||
end
|
||||
|
||||
# Insert a child into the container
|
||||
# @param child [DOMObject]
|
||||
# @param index [Integer]
|
||||
def insert(index, child)
|
||||
raise StandardError, "not a DOMObject" unless child.is_a? DOMObject
|
||||
|
||||
@children.insert(index, child)
|
||||
end
|
||||
|
||||
# Delete a child from container
|
||||
# @param index [Integer]
|
||||
def delete_at(index)
|
||||
@children.delete_at(index)
|
||||
end
|
||||
|
||||
# Get a child from the container
|
||||
# @param key [Integer]
|
||||
def [](key)
|
||||
@children[key]
|
||||
end
|
||||
|
||||
# Set text content of a DOMObject
|
||||
# @param text [String]
|
||||
def content=(text)
|
||||
raise StandardError, "not a String" unless text.is_a? String
|
||||
|
||||
@content = text
|
||||
end
|
||||
|
||||
# Get text content of a DOMObject
|
||||
# @return [String, nil]
|
||||
attr_reader :content, :children, :properties
|
||||
end
|
||||
|
||||
# Document root
|
||||
class Document < DOMObject
|
||||
self.slicer = ::RBMark::Parsers::RootSlicer
|
||||
parser ::RBMark::Parsers::IndentChunkParser
|
||||
parser ::RBMark::Parsers::QuoteChunkParser
|
||||
parser ::RBMark::Parsers::HeadingChunkParser
|
||||
parser ::RBMark::Parsers::CodeChunkParser
|
||||
parser ::RBMark::Parsers::UnorderedChunkParser
|
||||
parser ::RBMark::Parsers::OrderedChunkParser
|
||||
parser ::RBMark::Parsers::ParagraphChunkParser
|
||||
end
|
||||
|
||||
# Inline text
|
||||
class Text < DOMObject
|
||||
def self.parse(text)
|
||||
instance = super(text)
|
||||
instance.content = instance.content.gsub(/[\s\r\n]+/, " ")
|
||||
instance
|
||||
end
|
||||
end
|
||||
|
||||
# Inline preformatted text
|
||||
class InlinePre < DOMObject
|
||||
self.slicer = ::RBMark::Parsers::InlineSlicer
|
||||
end
|
||||
|
||||
# Infline formattable text
|
||||
class InlineFormattable < DOMObject
|
||||
self.slicer = ::RBMark::Parsers::InlineSlicer
|
||||
parser ::RBMark::Parsers::BreakInlineParser
|
||||
parser ::RBMark::Parsers::BoldInlineParser
|
||||
parser ::RBMark::Parsers::ItalicsInlineParser
|
||||
parser ::RBMark::Parsers::PreInlineParser
|
||||
parser ::RBMark::Parsers::UnderInlineParser
|
||||
parser ::RBMark::Parsers::StrikeInlineParser
|
||||
parser ::RBMark::Parsers::LinkInlineParser
|
||||
parser ::RBMark::Parsers::ImageInlineParser
|
||||
end
|
||||
|
||||
# Bold text
|
||||
class InlineBold < InlineFormattable
|
||||
end
|
||||
|
||||
# Italics text
|
||||
class InlineItalics < InlineFormattable
|
||||
end
|
||||
|
||||
# Underline text
|
||||
class InlineUnder < InlineFormattable
|
||||
end
|
||||
|
||||
# Strikethrough text
|
||||
class InlineStrike < InlineFormattable
|
||||
end
|
||||
|
||||
# Hyperreferenced text
|
||||
class InlineLink < InlineFormattable
|
||||
end
|
||||
|
||||
# Image
|
||||
class InlineImage < DOMObject
|
||||
end
|
||||
|
||||
# Linebreak
|
||||
class InlineBreak < DOMObject
|
||||
end
|
||||
|
||||
# Heading level 1
|
||||
class Heading1 < InlineFormattable
|
||||
end
|
||||
|
||||
# Heading level 2
|
||||
class Heading2 < Heading1
|
||||
end
|
||||
|
||||
# Heading level 3
|
||||
class Heading3 < Heading1
|
||||
end
|
||||
|
||||
# Heading level 4
|
||||
class Heading4 < Heading1
|
||||
end
|
||||
|
||||
# Preformatted code block
|
||||
class CodeBlock < DOMObject
|
||||
end
|
||||
|
||||
# Quote block
|
||||
class QuoteBlock < Document
|
||||
end
|
||||
|
||||
# Table
|
||||
class TableBlock < DOMObject
|
||||
end
|
||||
|
||||
# Unordered list
|
||||
class ULBlock < DOMObject
|
||||
self.slicer = ::RBMark::Parsers::UnorderedSlicer
|
||||
end
|
||||
|
||||
# Ordered list block
|
||||
class OLBlock < DOMObject
|
||||
self.slicer = ::RBMark::Parsers::OrderedSlicer
|
||||
end
|
||||
|
||||
# Indent block
|
||||
class IndentBlock < Document
|
||||
end
|
||||
|
||||
# List element
|
||||
class ListElement < Document
|
||||
end
|
||||
|
||||
# Horizontal rule
|
||||
class HorizontalRule < DOMObject
|
||||
end
|
||||
|
||||
# Paragraph in a document (separated by 2 newlines)
|
||||
class Paragraph < InlineFormattable
|
||||
end
|
||||
end
|
||||
end
|
||||
|
|
@ -0,0 +1,377 @@
|
|||
#!/usr/bin/ruby
|
||||
# frozen_string_literal: true
|
||||
|
||||
require_relative 'document'
|
||||
require 'io/console'
|
||||
require 'io/console/size'
|
||||
|
||||
module MDPP
|
||||
# Module for managing terminal output
|
||||
module TextManager
|
||||
# ANSI SGR escape code for bg color
|
||||
# @param text [String]
|
||||
# @param properties [Hash]
|
||||
# @return [String]
|
||||
def bg(text, properties)
|
||||
color = properties['bg']
|
||||
if color.is_a? Integer
|
||||
"\e[48;5;#{color}m#{text}\e[49m"
|
||||
elsif color.is_a? String and color.match?(/\A#[A-Fa-f0-9]{6}\Z/)
|
||||
vector = color.scan(/[A-Fa-f0-9]{2}/).map { |x| x.to_i(16) }
|
||||
"\e[48;2;#{vector[0]};#{vector[1]};#{vector[2]}\e[49m"
|
||||
else
|
||||
Kernel.warn "WARNING: Invalid color - #{color}"
|
||||
text
|
||||
end
|
||||
end
|
||||
|
||||
# ANSI SGR escape code for fg color
|
||||
# @param text [String]
|
||||
# @param properties [Hash]
|
||||
# @return [String]
|
||||
def fg(text, properties)
|
||||
color = properties['fg']
|
||||
if color.is_a? Integer
|
||||
"\e[38;5;#{color}m#{text}\e[39m"
|
||||
elsif color.is_a? String and color.match?(/\A#[A-Fa-f0-9]{6}\Z/)
|
||||
vector = color.scan(/[A-Fa-f0-9]{2}/).map { |x| x.to_i(16) }
|
||||
"\e[38;2;#{vector[0]};#{vector[1]};#{vector[2]}\e[39m"
|
||||
else
|
||||
Kernel.warn "WARNING: Invalid color - #{color}"
|
||||
text
|
||||
end
|
||||
end
|
||||
|
||||
# ANSI SGR escape code for bold text
|
||||
# @param text [String]
|
||||
# @return [String]
|
||||
def bold(text)
|
||||
"\e[1m#{text}\e[22m"
|
||||
end
|
||||
|
||||
# ANSI SGR escape code for italics text
|
||||
# @param text [String]
|
||||
# @return [String]
|
||||
def italics(text)
|
||||
"\e[3m#{text}\e[23m"
|
||||
end
|
||||
|
||||
# ANSI SGR escape code for underline text
|
||||
# @param text [String]
|
||||
# @return [String]
|
||||
def underline(text)
|
||||
"\e[4m#{text}\e[24m"
|
||||
end
|
||||
|
||||
# ANSI SGR escape code for strikethrough text
|
||||
# @param text [String]
|
||||
# @return [String]
|
||||
def strikethrough(text)
|
||||
"\e[9m#{text}\e[29m"
|
||||
end
|
||||
|
||||
# Word wrapping algorithm
|
||||
# @param text [String]
|
||||
# @param width [Integer]
|
||||
# @return [String]
|
||||
def wordwrap(text, width)
|
||||
words = text.split(/ +/)
|
||||
output = []
|
||||
line = ""
|
||||
until words.empty?
|
||||
word = words.shift
|
||||
if word.length > width
|
||||
words.prepend(word[width..])
|
||||
word = word[..width - 1]
|
||||
end
|
||||
if line.length + word.length + 1 > width
|
||||
output.append(line.lstrip)
|
||||
line = word
|
||||
next
|
||||
end
|
||||
line = [line, word].join(' ')
|
||||
end
|
||||
output.append(line.lstrip)
|
||||
newtext = output.join("\n")
|
||||
newtext
|
||||
end
|
||||
|
||||
# Draw a screen-width box around text
|
||||
# @param text [String]
|
||||
# @param center_margins [Integer]
|
||||
# @return [String]
|
||||
def box(text)
|
||||
size = IO.console.winsize[1] - 2
|
||||
text = wordwrap(text, (size * 0.8).floor).lines.filter_map do |line|
|
||||
"│#{line.strip.ljust(size)}│" unless line.empty?
|
||||
end.join("\n")
|
||||
<<~TEXT
|
||||
╭#{'─' * size}╮
|
||||
#{text}
|
||||
╰#{'─' * size}╯
|
||||
TEXT
|
||||
end
|
||||
|
||||
# Draw text right-justified
|
||||
def rjust(text)
|
||||
size = IO.console.winsize[1]
|
||||
wordwrap(text, (size * 0.8).floor).lines.filter_map do |line|
|
||||
line.strip.rjust(size) unless line.empty?
|
||||
end.join("\n")
|
||||
end
|
||||
|
||||
# Draw text centered
|
||||
def center(text)
|
||||
size = IO.console.winsize[1]
|
||||
wordwrap(text, (size * 0.8).floor).lines.filter_map do |line|
|
||||
line.strip.center(size) unless line.empty?
|
||||
end.join("\n")
|
||||
end
|
||||
|
||||
# Underline the last line of the text piece
|
||||
def underline_block(text)
|
||||
textlines = text.lines
|
||||
last = "".match(/()()()/)
|
||||
textlines.each do |x|
|
||||
current = x.match(/\A(\s*)(.+?)(\s*)\Z/)
|
||||
last = current if current[2].length > last[2].length
|
||||
end
|
||||
ltxt = last[1]
|
||||
ctxt = textlines.last.slice(last.offset(2)[0]..last.offset(2)[1] - 1)
|
||||
rtxt = last[3]
|
||||
textlines[-1] = [ltxt, underline(ctxt), rtxt].join('')
|
||||
textlines.join("")
|
||||
end
|
||||
|
||||
# Add extra newlines around the text
|
||||
def extra_newlines(text)
|
||||
size = IO.console.winsize[1]
|
||||
textlines = text.lines
|
||||
textlines.prepend("#{' ' * size}\n")
|
||||
textlines.append("\n#{' ' * size}\n")
|
||||
textlines.join("")
|
||||
end
|
||||
|
||||
# Underline last line edge to edge
|
||||
def underline_full_block(text)
|
||||
textlines = text.lines
|
||||
textlines[-1] = underline(textlines.last)
|
||||
textlines.join("")
|
||||
end
|
||||
|
||||
# Indent all lines
|
||||
def indent(text, properties)
|
||||
_indent(text, level: properties['level'])
|
||||
end
|
||||
|
||||
# Indent all lines (inner)
|
||||
def _indent(text, **_useless)
|
||||
text.lines.map do |line|
|
||||
" #{line}"
|
||||
end.join("")
|
||||
end
|
||||
|
||||
# Bulletpoints
|
||||
def bullet(text, _number, properties)
|
||||
level = properties['level']
|
||||
"-#{_indent(text, level: level)[1..]}"
|
||||
end
|
||||
|
||||
# Numbers
|
||||
def numbered(text, number, properties)
|
||||
level = properties['level']
|
||||
"#{number}.#{_indent(text, level: level)[number.to_s.length + 1..]}"
|
||||
end
|
||||
end
|
||||
|
||||
DEFAULT_STYLE = {
|
||||
"RBMark::DOM::Paragraph" => {
|
||||
"inline" => true,
|
||||
"indent" => true
|
||||
},
|
||||
"RBMark::DOM::Text" => {
|
||||
"inline" => true
|
||||
},
|
||||
"RBMark::DOM::Heading1" => {
|
||||
"inline" => true,
|
||||
"center" => true,
|
||||
"bold" => true,
|
||||
"extra_newlines" => true,
|
||||
"underline_full_block" => true
|
||||
},
|
||||
"RBMark::DOM::Heading2" => {
|
||||
"inline" => true,
|
||||
"center" => true,
|
||||
"underline_block" => true
|
||||
},
|
||||
"RBMark::DOM::Heading3" => {
|
||||
"inline" => true,
|
||||
"underline" => true,
|
||||
"bold" => true
|
||||
},
|
||||
"RBMark::DOM::Heading4" => {
|
||||
"inline" => true,
|
||||
"underline" => true
|
||||
},
|
||||
"RBMark::DOM::InlineImage" => {
|
||||
"inline" => true
|
||||
},
|
||||
"RBMark::DOM::InlineLink" => {
|
||||
"inline" => true
|
||||
},
|
||||
"RBMark::DOM::InlinePre" => {
|
||||
"inline" => true
|
||||
},
|
||||
"RBMark::DOM::InlineStrike" => {
|
||||
"inline" => true,
|
||||
"strikethrough" => true
|
||||
},
|
||||
"RBMark::DOM::InlineUnder" => {
|
||||
"inline" => true,
|
||||
"underline" => true
|
||||
},
|
||||
"RBMark::DOM::InlineItalics" => {
|
||||
"inline" => true,
|
||||
"italics" => true
|
||||
},
|
||||
"RBMark::DOM::InlineBold" => {
|
||||
"inline" => true,
|
||||
"bold" => true
|
||||
},
|
||||
"RBMark::DOM::ULBlock" => {
|
||||
"bullet" => true
|
||||
},
|
||||
"RBMark::DOM::OLBlock" => {
|
||||
"numbered" => true
|
||||
}
|
||||
}.freeze
|
||||
|
||||
STYLE_PRIO0 = [
|
||||
["numbered", true],
|
||||
["bullet", true]
|
||||
].freeze
|
||||
|
||||
STYLE_PRIO1 = [
|
||||
["center", false],
|
||||
["rjust", false],
|
||||
["box", false],
|
||||
["indent", true],
|
||||
["underline", false],
|
||||
["bold", false],
|
||||
["italics", false],
|
||||
["strikethrough", false],
|
||||
["bg", true],
|
||||
["fg", true],
|
||||
["extra_newlines", false],
|
||||
["underline_block", false],
|
||||
["underline_full_block", false]
|
||||
].freeze
|
||||
|
||||
# Primary document renderer
|
||||
class Renderer
|
||||
include ::MDPP::TextManager
|
||||
|
||||
# @param input [String]
|
||||
# @param options [Hash]
|
||||
def initialize(input, options)
|
||||
@doc = RBMark::DOM::Document.parse(input)
|
||||
pp @doc
|
||||
@color_mode = options.fetch("color", true)
|
||||
@ansi_mode = options.fetch("ansi", true)
|
||||
@style = ::MDPP::DEFAULT_STYLE.dup
|
||||
return unless options['style']
|
||||
|
||||
@style = @style.map do |k, v|
|
||||
v = v.merge(**options['style'][k]) if options['style'][k]
|
||||
[k, v]
|
||||
end.to_h
|
||||
end
|
||||
|
||||
# Return rendered text
|
||||
# @return [String]
|
||||
def render
|
||||
_render(@doc.children, @doc.properties)
|
||||
end
|
||||
|
||||
private
|
||||
|
||||
def _render(children, props)
|
||||
blocks = children.map do |child|
|
||||
if child.is_a? ::RBMark::DOM::Text or
|
||||
child.is_a? ::RBMark::DOM::CodeBlock
|
||||
child.content
|
||||
elsif child.is_a? ::RBMark::DOM::InlineBreak
|
||||
"\n"
|
||||
else
|
||||
child_props = get_props(child, props)
|
||||
calc_wordwrap(
|
||||
_render(child.children,
|
||||
child_props),
|
||||
props, child_props
|
||||
)
|
||||
end
|
||||
end
|
||||
apply_props(blocks, props)
|
||||
end
|
||||
|
||||
def calc_wordwrap(obj, props, obj_props)
|
||||
size = IO.console.winsize[1]
|
||||
return obj if obj_props['center'] or
|
||||
obj_props['rjust']
|
||||
|
||||
if !props['inline'] and obj_props['inline']
|
||||
wordwrap(obj, size - 2 * (props['level'].to_i + 1))
|
||||
else
|
||||
obj
|
||||
end
|
||||
end
|
||||
|
||||
def get_props(obj, props)
|
||||
new_props = @style[obj.class.to_s].dup || {}
|
||||
if props["level"]
|
||||
new_props["level"] = props["level"]
|
||||
new_props["level"] += 1 unless new_props["inline"]
|
||||
else
|
||||
new_props["level"] = 2
|
||||
end
|
||||
new_props
|
||||
end
|
||||
|
||||
def apply_props(blockarray, properties)
|
||||
blockarray = prio0(blockarray, properties)
|
||||
text = blockarray.join(properties['inline'] ? "" : "\n\n")
|
||||
.gsub(/\n{2,}/, "\n\n")
|
||||
prio1(text, properties)
|
||||
end
|
||||
|
||||
def prio0(blocks, props)
|
||||
::MDPP::STYLE_PRIO0.filter { |x| props.include? x[0] }.each do |style|
|
||||
blocks = blocks.map.with_index do |block, index|
|
||||
if style[1]
|
||||
method(style[0].to_s).call(block, index + 1, props)
|
||||
else
|
||||
method(style[0].to_s).call(block, index + 1)
|
||||
end
|
||||
end
|
||||
end
|
||||
blocks
|
||||
end
|
||||
|
||||
def prio1(block, props)
|
||||
::MDPP::STYLE_PRIO1.filter { |x| props.include? x[0] }.each do |style|
|
||||
block = if style[1]
|
||||
method(style[0].to_s).call(block, props)
|
||||
else
|
||||
method(style[0].to_s).call(block)
|
||||
end
|
||||
end
|
||||
block
|
||||
end
|
||||
end
|
||||
end
|
||||
|
||||
if __FILE__ == $0
|
||||
text = $stdin.read
|
||||
renderer = MDPP::Renderer.new(text, {})
|
||||
puts renderer.render
|
||||
end
|
||||
|
|
@ -0,0 +1,81 @@
|
|||
# Header level sadga kjshdkj hasdkjs hakjdhakjshd kashd kjashd kjashdk asjhdkj ashdkj ahskj hdaskd haskj hdkjash dkjashd ksajdh askjd hak askjhdkasjhdaksjhd sakjd 1
|
||||
|
||||
> Block quote text
|
||||
>
|
||||
> Second block quote paragraph
|
||||
> Block quote **bold** and *italics* test
|
||||
> Block quote **bold *italics* mix** test
|
||||
|
||||
## Header level 2
|
||||
|
||||
[link](http://example.com)
|
||||
|
||||
|
||||
```plaintext
|
||||
code *block*
|
||||
eat my shit
|
||||
```
|
||||
|
||||
paragraph with ``inline code block``
|
||||
|
||||
- Unordered list element 1
|
||||
- Unordered list element 2
|
||||
|
||||
1. Ordered list element 1
|
||||
2. Ordered list element 2
|
||||
|
||||
This is not a list
|
||||
- because it continues the paragraph
|
||||
- this is how it should be, like it or not
|
||||
|
||||
- This is also not a list
|
||||
because there is text on the next line
|
||||
|
||||
- But this here is a list
|
||||
because the spacing is made correctly
|
||||
|
||||
more so than that, there are multiple paragraphs here!
|
||||
|
||||
- AND even more lists in a list!
|
||||
- how extra
|
||||
- And this is just the next element in the list
|
||||
|
||||
1. same thing but with ordered lists
|
||||
ordered lists have a little extra special property to them
|
||||
|
||||
the indentations are always symmetrical to the last space of the bullet's number
|
||||
10. i.e., if you look at this here example
|
||||
this will work
|
||||
|
||||
obviously
|
||||
|
||||
|
||||
1. But this
|
||||
10. Won't
|
||||
because the indentation doesn't match the start of the line.
|
||||
|
||||
generally speaking this kind of insane syntax trickery won't be necessary,
|
||||
but it's just better to have standards than to have none of them.
|
||||
|
||||
an unfortunate side effect of this flexibility should also be noted, and
|
||||
it's that markdown linters don't like this sort of stuff.
|
||||
Yet another reason not to use a markdown linter.
|
||||
|
||||
- And this is just the lame stupid old way to do this, as described by mardkownguide
|
||||
|
||||
> just indent your stuff and it works
|
||||
> really it's as simple as that.
|
||||
> bruh
|
||||
|
||||
there can be as many as infinite number of elements appended to the list that way.
|
||||
|
||||
you can even start a sublist here if you want to
|
||||
|
||||
- here's a new nested list
|
||||
- could you imagine the potential
|
||||
|
||||
and here's an image of nothing
|
||||
|
||||
|
||||
|
||||
- I may also need to merge lists for this to work properly
|
||||
Loading…
Reference in New Issue