Generating TOC for .md files
this ruby script to generate the TOC from a markdown file
#!/usr/bin/env ruby
require 'uri'
fileName = ARGV[0]
fileName = "README.md" if !fileName
File.open(fileName, 'r') do |f|
inside_code_snippet = false
f.each_line do |line|
forbidden_words = ['Table of contents', 'define', 'pragma']
inside_code_snippet = !inside_code_snippet if line.start_with?('```')
next if !line.start_with?("#") || forbidden_words.any? { |w| line =~ /#{w}/ } || inside_code_snippet
title = line.gsub("#", "").strip
href = URI::encode title.gsub(" ", "-").downcase
puts " " * (line.count("#")-1) + "* [#{title}](\##{href})"
end
end
create your TOC (summary) in your markdown document.
# My Table of content
- [Section 1](#id-section1)
- [Section 2](#id-section2)
<div id='id-section1'/>
## Section 1
<div id='id-section2'/>
## Section 2
# Table of Contents
1. [Example](#example)
2. [Example2](#example2)
3. [Third Example](#third-example)
## Example [](#){name=example}
## Example2 [](#){name=example2}
## [Third Example](#){name=third-example}
Based on albertodebortoli answer created the function with additional checks and substitution of punctuation marks.
# @fn def generate_table_of_contents markdown # {{{
# @brief Generates table of contents for given markdown text
#
# @param [String] markdown Markdown string e.g. File.read('README.md')
#
# @return [String] Table of content in markdown format.
#
def generate_table_of_contents markdown
table_of_contents = ""
i_section = 0
# to track markdown code sections, because e.g. ruby comments also start with #
inside_code_section = false
markdown.each_line do |line|
inside_code_section = !inside_code_section if line.start_with?('```')
forbidden_words = ['Table of contents', 'define', 'pragma']
next if !line.start_with?('#') || inside_code_section || forbidden_words.any? { |w| line =~ /#{w}/ }
title = line.gsub("#", "").strip
href = title.gsub(/(^[!.?:\(\)]+|[!.?:\(\)]+$)/, '').gsub(/[!.,?:; \(\)-]+/, "-").downcase
bullet = line.count("#") > 1 ? " *" : "#{i_section += 1}."
table_of_contents << " " * (line.count("#") - 1) + "#{bullet} [#{title}](\##{href})\n"
end
table_of_contents
end