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#tDiary 向け PlantUML プラグイン
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# -*- coding: utf-8 -*- | |
# create image by PlantUML http://plantuml.com/ | |
# | |
# Copyright (c) tamoot <tamoot+tdiary@gmail.com> | |
# Distributed under the GPL | |
# | |
require 'uri' | |
require 'zlib' | |
require 'digest/md5' | |
module ::PlantUML | |
module Deflate | |
CHARS ||= ('0'..'9').to_a + ('A'..'Z').to_a + ('a'..'z').to_a + ['-', '_'] | |
def self.compress(text) | |
compressed = Zlib::Deflate.deflate(text, Zlib::BEST_COMPRESSION) | |
compressed.chars.each_slice(3).map do |chars| | |
append3bytes(chars[0].ord, chars[1]&.ord.to_i, chars[2]&.ord.to_i) | |
end.join | |
end | |
private | |
def self.append3bytes(b1, b2, b3) | |
[ | |
b1 >> 2, | |
((b1 & 0x3) << 4) | (b2 >> 4), | |
((b2 & 0xF) << 2) | (b3 >> 6), | |
b3 & 0x3F, | |
].map { |c| CHARS[c & 0x3F] || '?' }.join | |
end | |
end | |
end | |
def plantuml(text) | |
html = %Q|<div class="plantuml">| | |
begin | |
uri = URI::parse( @conf['plantuml.server'] ) | |
uri.path.gsub!(/\/+$/, "") | |
uri.path << '/png/' << PlantUML::Deflate::compress(text) | |
html << %Q|<img src=#{uri}></img>| | |
rescue | |
html << $!.message | |
end | |
html << %Q|</div>| | |
end | |
add_conf_proc('plantuml_server', 'PlantUMLサーバ') do | |
if @mode == 'saveconf' | |
@conf['plantuml.server'] = @cgi.params['plantuml.server'][0] | |
end | |
r = <<-_HTML | |
<h3>Summary</h3> | |
<p>The image is generated by using specified PlantUML server.</p> | |
<h3>URL of PlantUML server</h3> | |
<p><input type="text" name="plantuml.server" size="100" value="#{@conf['plantuml.server']}"></p> | |
_HTML | |
r | |
end | |
# Local Variables: | |
# mode: ruby | |
# indent-tabs-mode: t | |
# tab-width: 3 | |
# ruby-indent-level: 3 | |
# End: | |
# vim: ts=3 |
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