Skip to content

Instantly share code, notes, and snippets.

@nileshtrivedi

nileshtrivedi/ncert.rb

Created April 24, 2022 17:42
Show Gist options

  • Select an option

    Learn more about clone URLs
  • Save nileshtrivedi/45c5daf86b465734cae03c5627f9fad7 to your computer and use it in GitHub Desktop.

Select an option

Learn more about clone URLs
Save nileshtrivedi/45c5daf86b465734cae03c5627f9fad7 to your computer and use it in GitHub Desktop.
Download ZIP

Revisions

  1. nileshtrivedi created this gist Apr 24, 2022.
    30 changes: 30 additions & 0 deletions ncert.rb
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,30 @@
    # NCERT books are excellent but being altered for political or other reasons
    # See: https://twitter.com/SouthAsiaIndex/status/1518062204058103809
    # To download the entire current set, run this script with Ruby

    require 'httparty'

    source = HTTParty.get('https://ncert.nic.in/textbook.php').force_encoding("ISO-8859-1").encode("utf-8", replace: nil)

    # book names are like aeen1dd.zip
    # First letter tells the class number a to l is class 1 to class 12. m stands for class 11 and 12 combined
    # Second letter is the language the book is written in: e for English, h for Hindi, u for Urdu

    bookids = source.scan(/textbook.php\?[a-z]{4,4}\d/).uniq

    def download_book(book_name)
    puts "Downloading #{book_name}"
    File.open(book_name, "w") do |file|
    file.binmode
    HTTParty.get('https://ncert.nic.in/textbook/pdf/' + book_name, follow_redirects: true, stream_body: true) do |fragment|
    file.write(fragment)
    end
    end
    rescue
    end

    bookids.each do |bid|
    book_name = bid.gsub("textbook.php?", "") + "dd.zip"
    download_book(book_name)
    sleep(0.2)
    end