Class: Grit::Blame

Inherits:
Object
  • Object
show all
Defined in:
lib/grit/blame.rb

Defined Under Namespace

Classes: BlameLine

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(repo, file, commit) ⇒ Blame

Returns a new instance of Blame.



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# File 'lib/grit/blame.rb', line 7

def initialize(repo, file, commit)
  @repo = repo
  @file = file
  @commit = commit
  @lines = []
  load_blame
end

Instance Attribute Details

#lines ⇒ Object (readonly)

Returns the value of attribute lines.



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# File 'lib/grit/blame.rb', line 5

def lines
  @lines
end

Instance Method Details

#inspect ⇒ Object

Pretty object inspection



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# File 'lib/grit/blame.rb', line 50

def inspect
  %Q{#<Grit::Blame "#{@file} <#{@commit}>">}
end

#load_blame ⇒ Object 



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# File 'lib/grit/blame.rb', line 15

def load_blame
  output = @repo.git.blame({'p' => true}, @commit, '--', @file)
  process_raw_blame(output)
end

#process_raw_blame(output) ⇒ Object 



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# File 'lib/grit/blame.rb', line 20

def process_raw_blame(output)
  lines, final = [], []
  info, commits = {}, {}

  # process the output
  output.split("\n").each do |line|
    if line[0, 1] == "\t"
      lines << line[1, line.size]
    elsif m = /^(\w{40}) (\d+) (\d+)/.match(line)
      commit_id, old_lineno, lineno = m[1], m[2].to_i, m[3].to_i
      commits[commit_id] = nil if !commits.key?(commit_id)
      info[lineno] = [commit_id, old_lineno]
    end
  end

  # load all commits in single call
  @repo.batch(*commits.keys).each do |commit|
    commits[commit.id] = commit
  end

  # get it together
  info.sort.each do |lineno, (commit_id, old_lineno)|
    commit = commits[commit_id]
    final << BlameLine.new(lineno, old_lineno, commit, lines[lineno - 1])
  end

  @lines = final
end