lib/markdown/nitmd.nit

   1 # This file is part of NIT ( http://www.nitlanguage.org ).
   2 #
   3 # Licensed under the Apache License, Version 2.0 (the "License");
   4 # you may not use this file except in compliance with the License.
   5 # You may obtain a copy of the License at
   6 #
   7 #     http://www.apache.org/licenses/LICENSE-2.0
   8 #
   9 # Unless required by applicable law or agreed to in writing, software
  10 # distributed under the License is distributed on an "AS IS" BASIS,
  11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12 # See the License for the specific language governing permissions and
  13 # limitations under the License.
  14
  15 # A Markdown parser for Nit.
  16 module nitmd
  17
  18 import markdown
  19 import decorators
  20 import man
  21
  22 import config
  23
  24 var opt_to = new OptionString("Specify output format (html, md, man)", "-t", "--to")
  25
  26 var usage = new Buffer
  27 usage.append "Usage: nitmd [-t format] <file.md>\n"
  28 usage.append "Translate Markdown documents to other formats."
  29
  30 var config = new Config
  31 config.add_option(opt_to)
  32 config.tool_description = usage.write_to_string
  33
  34 config.parse_options(args)
  35 if config.args.length != 1 then
  36         config.usage
  37         exit 1
  38 end
  39
  40 var file = config.args.first
  41 if not file.file_exists then
  42         print "'{file}' not found"
  43         exit 1
  44 end
  45
  46 var ifs = new FileReader.open(file)
  47 var md = ifs.read_all
  48 ifs.close
  49
  50 var processor = new MarkdownProcessor
  51 var to = opt_to.value
  52 if to == null or to == "html" then
  53         # Noop
  54 else if to == "md" then
  55         processor.decorator = new MdDecorator
  56 else if to == "man" then
  57         processor.decorator = new ManDecorator
  58 else
  59         print "Unknown output format: {to}"
  60         exit 1
  61 end
  62 print processor.process(md)