2023-08-24 06:26:44 -06:00
|
|
|
# frozen_string_literal: true
|
|
|
|
|
|
|
|
|
|
require 'English'
|
2023-08-24 06:41:11 -06:00
|
|
|
module Miniparser
|
2023-08-24 06:26:44 -06:00
|
|
|
class Validator
|
|
|
|
|
def initialize(language)
|
|
|
|
|
@language = language
|
|
|
|
|
end
|
|
|
|
|
|
|
|
|
|
def validate(code)
|
|
|
|
|
case @language
|
|
|
|
|
when :html
|
|
|
|
|
validate_html(code)
|
|
|
|
|
when :css
|
|
|
|
|
validate_css(code)
|
|
|
|
|
when :js
|
|
|
|
|
validate_js(code)
|
|
|
|
|
else
|
|
|
|
|
raise "Unknown language: #{@language}"
|
|
|
|
|
end
|
|
|
|
|
end
|
|
|
|
|
|
|
|
|
|
private
|
|
|
|
|
|
|
|
|
|
def validate_html(code)
|
|
|
|
|
# List of self-closing singleton tags in HTML5
|
|
|
|
|
singleton_tags = %w[area base br col embed hr img input link meta param source track wbr]
|
|
|
|
|
|
|
|
|
|
# Stack to keep track of opening tags
|
|
|
|
|
stack = []
|
|
|
|
|
|
|
|
|
|
# Iterate through all the tags in the code
|
|
|
|
|
code.scan(%r{</?\w+[^>]*>}) do |tag|
|
|
|
|
|
tag_name = tag.match(%r{</?(\w+)})[1]
|
|
|
|
|
|
|
|
|
|
# Ignore singleton tags and declarations like <!DOCTYPE html>
|
|
|
|
|
next if singleton_tags.include?(tag_name) || tag.start_with?('<!')
|
|
|
|
|
|
|
|
|
|
if tag.start_with?('</') # Closing tag
|
|
|
|
|
# Check if the closing tag matches the last opening tag
|
|
|
|
|
if stack.last == tag_name
|
|
|
|
|
stack.pop
|
|
|
|
|
else
|
|
|
|
|
return [false, "Mismatched HTML tags: expected </#{stack.last}> but found #{tag}"]
|
|
|
|
|
end
|
|
|
|
|
else # Opening tag
|
|
|
|
|
stack.push(tag_name)
|
|
|
|
|
end
|
|
|
|
|
end
|
|
|
|
|
|
|
|
|
|
# Check if there are any unmatched opening tags
|
|
|
|
|
if stack.empty?
|
|
|
|
|
[true, nil]
|
|
|
|
|
else
|
|
|
|
|
[false, "Mismatched HTML tags: unmatched <#{stack.last}>"]
|
|
|
|
|
end
|
|
|
|
|
end
|
|
|
|
|
|
|
|
|
|
def validate_css(code)
|
|
|
|
|
# Basic validation: check for balanced curly braces
|
|
|
|
|
valid = code.count('{') == code.count('}')
|
|
|
|
|
[valid, valid ? nil : 'Mismatched CSS curly braces']
|
|
|
|
|
end
|
|
|
|
|
|
|
|
|
|
require 'tempfile'
|
|
|
|
|
require 'shellwords'
|
|
|
|
|
|
|
|
|
|
def validate_js(code)
|
|
|
|
|
Tempfile.create(['temp', '.js']) do |temp_file|
|
|
|
|
|
temp_file.write(code)
|
|
|
|
|
temp_file.close
|
|
|
|
|
output = `node -c #{Shellwords.escape(temp_file.path)} 2>&1`
|
|
|
|
|
success = $CHILD_STATUS.success?
|
|
|
|
|
[success, success ? nil : output]
|
|
|
|
|
end
|
|
|
|
|
end
|
|
|
|
|
end
|
|
|
|
|
end
|
