Module: Hunkify::DiffParser

Defined in:
lib/hunkify/diff_parser.rb

Class Method Summary collapse

Class Method Details

.parse(raw_diff) ⇒ Object 



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# File 'lib/hunkify/diff_parser.rb', line 7

def self.parse(raw_diff)
  hunks = []
  hunk_id = 0
  file_header = nil
  file_path = nil
  hunk_header = nil
  hunk_lines = []

  raw_diff.each_line do |line|
    line = line.chomp
    line = " " if line.empty? && hunk_header

    if line.start_with?("diff --git")
      if hunk_header && !hunk_lines.empty?
        hunk_id += 1
        hunks << Hunk.new(
          id: hunk_id,
          file_header: file_header,
          file_path: file_path,
          hunk_header: hunk_header,
          lines: hunk_lines.dup
        )
      end
      hunk_header = nil
      hunk_lines = []
      file_header = line
      file_path = line.split(" b/").last

    elsif line.start_with?("--- ", "+++ ", "index ", "new file", "deleted file", "old mode", "new mode", "rename ")
      file_header = "#{file_header}\n#{line}"

    elsif line.start_with?("@@")
      if hunk_header && !hunk_lines.empty?
        hunk_id += 1
        hunks << Hunk.new(
          id: hunk_id,
          file_header: file_header,
          file_path: file_path,
          hunk_header: hunk_header,
          lines: hunk_lines.dup
        )
      end
      hunk_header = line
      hunk_lines = []

    elsif hunk_header
      hunk_lines << line
    end
  end

  if hunk_header && !hunk_lines.empty?
    hunk_id += 1
    hunks << Hunk.new(
      id: hunk_id,
      file_header: file_header,
      file_path: file_path,
      hunk_header: hunk_header,
      lines: hunk_lines.dup
    )
  end

  hunks
end