71 lines
1.6 KiB
Ruby
71 lines
1.6 KiB
Ruby
|
require "mathematical"
|
||
|
|
|
||
|
|
# module Jekyll
|
||
|
|
# class LatexGenerator < Generator
|
||
|
|
# safe true
|
||
|
|
# def generate(site)
|
||
|
|
# blockRgx = /\$\$[^\$]+\$\$/
|
||
|
|
# site.posts.each do |post|
|
||
|
|
# buf = StringIO.new
|
||
|
|
# prev = 0
|
||
|
|
# post.content.to_enum(:match, blockRgx).with_index.each do |match, i|
|
||
|
|
# a, b = match.offset(i)
|
||
|
|
# buf << post.content[prev..a]
|
||
|
|
|
||
|
|
# render = Mathematical.new.render(match[i])
|
||
|
|
# buf << render[:data]
|
||
|
|
|
||
|
|
# prev = b
|
||
|
|
# end
|
||
|
|
# buf << post.content[prev..post.content.length]
|
||
|
|
# p buf.string
|
||
|
|
# end
|
||
|
|
# inlineRgx = /[^\$]\$[^\$]+\$[^\$]/
|
||
|
|
# site.posts.each do |post|
|
||
|
|
# p post.content.scan(inlineRgx)
|
||
|
|
# end
|
||
|
|
# end
|
||
|
|
# end
|
||
|
|
# end
|
||
|
|
|
||
|
|
$blockRgx = /((?<block>\$\$[^\$]+\$\$)|[^\$](?<inline>\$[^\$]+\$)[^\$])/
|
||
|
|
|
||
|
|
module Jekyll
|
||
|
|
class InlineLatex < Converter
|
||
|
|
safe true
|
||
|
|
priority :high
|
||
|
|
|
||
|
|
def matches(ext)
|
||
|
|
ext =~ /^\.md$/i
|
||
|
|
end
|
||
|
|
|
||
|
|
def output_ext(ext)
|
||
|
|
".md"
|
||
|
|
end
|
||
|
|
|
||
|
|
def convert(content)
|
||
|
|
# first pass
|
||
|
|
buf = StringIO.new
|
||
|
|
prev = 0
|
||
|
|
renderer = Mathematical.new({:base64 => true, :format => :svg})
|
||
|
|
content.to_enum(:scan, $blockRgx).map { Regexp.last_match }.to_enum.with_index.each do |match, i|
|
||
|
|
if match[:block] != nil
|
||
|
|
code = match[:block]
|
||
|
|
a, b = match.offset(:block)
|
||
|
|
else
|
||
|
|
code = match[:inline]
|
||
|
|
a, b = match.offset(:inline)
|
||
|
|
end
|
||
|
|
|
||
|
|
buf << content[prev..a].gsub(/^\$?\$/, "").gsub(/\$?\$$/, "")
|
||
|
|
|
||
|
|
render = renderer.render(code)
|
||
|
|
buf << "<img src='" + render[:data] + "' />"
|
||
|
|
prev = b - 1
|
||
|
|
end
|
||
|
|
buf << content[prev..content.length].gsub(/^\$?\$/, "")
|
||
|
|
return buf.string
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|