Module: Actions

Includes:
DiffCalc
Defined in:
lib/actions.rb

Instance Attribute Summary

Attributes included from DiffCalc

#cnt, #mem, #new_s, #old_s

Instance Method Summary collapse

Methods included from DiffCalc

#build_sequences, #compute_diff, #differencing, #initialize, #print_diff, #print_line

Instance Method Details

#branch ⇒ Object 



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# File 'lib/actions.rb', line 281

def branch
  name = ARGV.last
  pointer = read_json('.stolen-git/pointer.json')
  pointed_branch = pointer['type'] == 'branch' ? pointer['point_to'] : ''
  if name
    first_commit = pointer['type'] == 'branch' ? read_json(".stolen-git/branches/#{pointed_branch}.json")['commit_pointer'] : pointer['point_to']
    id = SecureRandom.uuid
    File.write(".stolen-git/branches/#{id}.json", JSON.pretty_generate({
                                                                         name: name,
                                                                         created_at: Time.now,
                                                                         commit_pointer: first_commit
                                                                       }))
    return
    puts "branch #{name} created"
  end
  Dir.children('.stolen-git/branches').each do |entry|
    branch_content = read_json(".stolen-git/branches/#{entry}")
    branch_id = File.basename(entry, '.*')
    if pointed_branch == branch_id
      print '* '
      puts "#{branch_content['name']}".green
    else
      puts "#{branch_content['name']}"
    end
  end
end

#checkout ⇒ Object 



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# File 'lib/actions.rb', line 239

def checkout
  options = { commit: false }

  # Getting commit name & description
  OptionParser.new do |opts|
    opts.banner = 'Usage: stolen-git checkout [options]'

    opts.on('-c', '--commit', 'Add a commit id instead') do
      options[:commit] = true
    end
  end.parse!
  inp = ARGV.last
  if !inp
    puts 'Please Enter the name of a branch or commit_id'
  elsif options[:commit]
    commit_history = read_json('.stolen-git/commits.json')
    current_commit_hash = commit_history['commits'].find { |x| x['id'] == inp }['hash']
    revert_to_commit(current_commit_hash)
  else
    # TODO: Handle if user enters branch_id instead
    branch_content = {}
    branch_id = ''
    Dir.children('.stolen-git/branches').each do |entry|
      branch_content = read_json(".stolen-git/branches/#{entry}")
      if branch_content['name'] == inp
        branch_id = File.basename(entry, '.*')
        break
      end
    end
    if branch_content.empty?
      puts 'There is no branch with that name.'
      nil
    end
    commit_hash = branch_content['commit_pointer']
    revert_to_commit(commit_hash)
    pointer = read_json('.stolen-git/pointer.json')
    pointer['point_to'] = branch_id
    pointer['type'] = 'branch'
    File.write('.stolen-git/pointer.json', JSON.pretty_generate(pointer))
  end
end

#commit ⇒ Object 



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# File 'lib/actions.rb', line 82

def commit
  options = { name: '', description: '' }

  # Getting commit name & description
  OptionParser.new do |opts|
    opts.banner = 'Usage: stolen-git commit [options]'

    opts.on('-n', '--name NAME', 'Add a commit name') do |name|
      options[:name] = name
    end

    opts.on('-d', '--description DESCRIPTION', 'Add a commit description') do |description|
      options[:description] = description
    end
  end.parse!

  options[:name] = ask('Add a commit name: ') if options[:name].empty?

  # Get the index
  index = JSON.parse(File.read('.stolen-git/index.json'))
  tree_content = {
    entries: []
  }

  commit_history = JSON.parse(File.read('.stolen-git/commits.json'))

  pointer = read_json('.stolen-git/pointer.json')
  branch_id = pointer['point_to']
  branch_content = read_json(".stolen-git/branches/#{branch_id}.json")
  parent_commit = branch_content['commit_pointer']

  # Getting differences to last commit

  no_insertions = 0
  no_deletions = 0
  no_file_changed = 0
  commit_diff = {}

  getting_diff = lambda do |entries|
    parent_index = 0

    index.each do |key, value|
      if entries && entries[parent_index] && key == entries[parent_index]['path']
        new_hash = value['hash']
        old_hash = entries[parent_index]['hash']
        parent_index += 1
        next if value['hash'] == new_hash

        entry_content = File.read(".stolen-git/storage/blobs/#{old_hash}").lines.to_a
        new_entry_content = File.read(".stolen-git/storage/blobs/#{new_hash}").lines.to_a
        compute_diff(entry_content, new_entry_content)
        diff = build_sequences
        no_insertions += diff[:insertions]
        no_deletions += diff[:deletions]
        no_file_changed += 1
        commit_diff[key] = diff
      else
        new_entry_content = File.read(".stolen-git/storage/blobs/#{value['hash']}").lines.to_a
        compute_diff('', new_entry_content)
        diff = build_sequences

        no_insertions += diff[:insertions]
        no_deletions += diff[:deletions]
        no_file_changed += 1
        commit_diff[key] = diff
      end
    end
  end

  if parent_commit.empty?
    getting_diff.call(nil)
  else
    parent_commit_content = read_json(".stolen-git/commits/#{parent_commit}.json")
    parent_tree_hash = parent_commit_content['tree_hash']
    parent_tree_content = JSON.parse(File.read(".stolen-git/storage/trees/#{parent_tree_hash}.json"))
    getting_diff.call(parent_tree_content['entries'])
  end

  if no_file_changed <= 0
    puts 'Everything up to date'
    puts "If you have changed please 'stg stage' them first "
    return
  end

  # Making the tree
  index.each do |key, value|
    tree_content[:entries].push({
                                  path: key,
                                  type: 'blob',
                                  hash: value['hash'],
                                  diff: commit_diff[key] || {}
                                })
  end
  tree_content[:entries] = tree_content[:entries].sort { |a, b| a['path'] <=> b['path'] }
  tree_content = JSON.pretty_generate(tree_content)
  tree_hash = get_string_hash(tree_content)
  File.write(".stolen-git/storage/trees/#{tree_hash}.json", tree_content)

  # Making the commit
  # TODO: Change to actual values when personal profiles are created
  commit_id = SecureRandom.uuid
  commit_content = {
    tree_hash: tree_hash,
    created_at: Time.now,
    id: commit_id,
    parent_commit: parent_commit,
    branch_id: branch_id,
    author_profile: {
      name: 'Amr',
      email: 'amrbassem218@gmail.com',
      username: 'amrbassem218'
    },
    name: options[:name],
    description: options[:description],

    no_insertions: no_insertions,
    no_deletions: no_deletions,
    no_files_changed: no_file_changed
  }
  commit_content = JSON.pretty_generate(commit_content)
  commit_hash = get_string_hash(commit_content)
  File.write(".stolen-git/commits/#{commit_hash}.json", commit_content)

  # Adding commit to history
  commit_history['commits'].push({ id: commit_id, hash: commit_hash, name: options[:name] })
  File.write('.stolen-git/commits.json', JSON.pretty_generate(commit_history))

  # Adding to branch
  branch_content['commit_pointer'] = commit_hash
  File.write(".stolen-git/branches/#{branch_id}.json", JSON.pretty_generate(branch_content))

  # Print
  puts "#{no_file_changed} files changed, #{no_insertions} insertions(+), #{no_deletions} deletions(-)"
end

#diff ⇒ Object 



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# File 'lib/actions.rb', line 308

def diff
  index = read_json('.stolen-git/index.json')
  index.each do |key, value|
    new_file_content = File.exist?(key) ? File.read(key) : nil
    file_name = File.basename(key)
    if new_file_content.nil?
      print "@@#{file_name}".cyan
      print " [DELETED]]\n".red
    else
      new_hash = get_file_hash(key)
      next if new_hash == value['hash']

      print "@@#{file_name}".cyan
      blob_content = File.read(".stolen-git/storage/blobs/#{value['hash']}")
      print_diff(blob_content, new_file_content)
    end
  end
end

#log ⇒ Object 



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# File 'lib/actions.rb', line 327

def log
  limit = ARGV.last
  limit = limit && !limit.empty? ? limit.to_i : 0
  commit_history_content = read_json('.stolen-git/commits.json')

  commit_history_content['commits'].each_with_index do |commit, i|
    break if limit > 0 && i >= limit

    if limit == 0 && i >= 5
      q = ask(':')
      break if q == 'q'
    end
    commit_content = read_json(".stolen-git/commits/#{commit['hash']}.json")
    puts
    puts "commit #{commit_content['id']}".green
    puts "Author #{commit_content['author_profile']['username']} <#{commit_content['author_profile']['email']}>"
    puts "Date: #{commit_content['created_at']}"
    puts
    puts "    #{commit_content['name']}"
    puts
  end
end

#p_initialize ⇒ Object 



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# File 'lib/actions.rb', line 11

def p_initialize
  # Check if already initialized
  if File.exist?('.stolen-git')
    if confirm?('An instance of stolen-git is already up here do you want to replace it')
      if confirm?('THIS WILL DELETE ALL COMMITS AND INSTANCES OF stolen-git. ARE YOU SURE')
        FileUtils.rm_rf('.stolen-git')

        if File.exist?('.stolen-git')
          puts 'An error occured during the deletion process of the old directory of stolen-git'
        else
          p_initialize
        end
      else
        puts 'ok'
      end
    else
      puts 'ok'
    end

  else
    # main dot directory
    FileUtils.mkdir_p('.stolen-git')

    # Sub Directories
    FileUtils.mkdir_p('.stolen-git/commits')
    FileUtils.mkdir_p('.stolen-git/branches')

    FileUtils.mkdir_p('.stolen-git/storage')
    FileUtils.mkdir_p('.stolen-git/storage/blobs')
    FileUtils.mkdir_p('.stolen-git/storage/trees')

    # main files
    File.write('.stolen-git/project_info.json', {})
    File.write('.stolen-git/commits.json', JSON.pretty_generate({ commits: [] }))
    File.write('.stolen-git/index.json', {})

    main_branch_id = SecureRandom.uuid
    File.write(".stolen-git/branches/#{main_branch_id}.json",
               JSON.pretty_generate({ name: 'main', created_at: Time.now, commit_pointer: '' }))

    File.write('.stolen-git/pointer.json', JSON.pretty_generate({ point_to: main_branch_id, type: 'branch' }))
    puts 'Stolen-git initialized Sucessfully :D'
  end
end

#reset ⇒ Object 



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# File 'lib/actions.rb', line 217

def reset
  commit_id = ARGV.first
  commit_history = read_json('.stolen-git/commits.json')
  pointer = read_json('.stolen-git/pointer.json')
  branch_id = pointer['point_to']
  branch_content = read_json(".stolen-git/branches/#{branch_id}.json")
  current_commit_hash = branch_content['commit_pointer']
  parent_commit_hash = if !commit_id || commit_id.empty?
                         read_json(".stolen-git/commits/#{current_commit_hash}.json")['parent_commit']
                       else
                         commit_history['commits'].find { |x| x['id'] == commit_id }['hash']
                       end

  if parent_commit_hash.empty?
    puts "The current commit is the earliest in the project. Can't reset behind that."
    return
  end
  revert_to_commit(parent_commit_hash)
  branch_content['commit_pointer'] = parent_commit_hash
  File.write(".stolen-git/branches/#{branch_id}.json", JSON.pretty_generate(branch_content))
end

#stage ⇒ Object 



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# File 'lib/actions.rb', line 56

def stage
  files = ARGV
  if files.empty?
    puts 'Usage: stolen-git stage <files..>'
    return
  end

  index = JSON.parse(File.read('.stolen-git/index.json'))
  files.each do |file_path|
    file_hash = get_file_hash(file_path)
    file_content = File.read(file_path)

    next if index[file_path] && index[file_path]['hash'] == file_hash

    # Create blob
    File.write(".stolen-git/storage/blobs/#{file_hash}", file_content)

    # Assign index_obj
    default_index_obj = {}
    index[file_path] ||= default_index_obj
    index[file_path]['hash'] = file_hash
  end
  index = index.sort.to_h
  File.write('.stolen-git/index.json', JSON.pretty_generate(index))
end