Class: GitHelpers::GitDiffHighlight

Inherits:

GitDiff

• Object
• GitDiff
• GitHelpers::GitDiffHighlight

Defined in:

lib/git_helpers/diff.rb

Overview

stolen from diff-highlight git contrib script

Constant Summary

Constants inherited from GitDiff

GitHelpers::GitDiff::NoNewLine

Instance Attribute Summary

Attributes inherited from GitDiff

#output

Instance Method Summary

• #end_hunk ⇒ Object
• #handle_line ⇒ Object
• #highlight_pair(old, new) ⇒ Object
• #new_hunk ⇒ Object
• #show_hunk ⇒ Object

Methods inherited from GitDiff

#change_mode, #detect_delete, #detect_diff_header, #detect_end_diff_header, #detect_end_hunk, #detect_filename, #detect_index, #detect_new_commit, #detect_new_diff_header, #detect_new_hunk, #detect_new_submodule_header, #detect_newfile, #detect_perm, #detect_rename_copy, #each, #end_commit, #end_diff_header, #end_meta, #end_submodule, #end_submodule_header, #get_file_name, #handle_commit, #handle_diff_header, #handle_hunk, #handle_meta, #handle_submodule, #handle_submodule_header, #initialize, #new_commit, #new_diff_header, #new_meta, #new_submodule, #new_submodule_header, #next_mode, output, #output_line, #output_lines, #parse, #parse_hunk_header, #parse_line, #prepare_new_line, #reparse, #submodule_line, #update_mode

Constructor Details

This class inherits a constructor from GitHelpers::GitDiff

Instance Method Details

#end_hunk ⇒ Object

# File 'lib/git_helpers/diff.rb', line 426

def end_hunk
  super
  show_hunk
end

#handle_line ⇒ Object

# File 'lib/git_helpers/diff.rb', line 464

def handle_line
  if @mode == :hunk && @hunk[:n]==2
    linemode=@line[0]
    case linemode
    when "-"
      @accumulator[0] << @orig_line
    when "+"
      @accumulator[1] << @orig_line
    else
      show_hunk
      @accumulator=[[],[]]
      output_line @orig_line
    end
  else
    output_line @orig_line
  end
end

#highlight_pair(old, new) ⇒ Object

# File 'lib/git_helpers/diff.rb', line 431

def highlight_pair(old,new)
  oldc=SimpleColor.color_entities(old).each_with_index
  newc=SimpleColor.color_entities(new).each_with_index
  seen_pm=false
  #find common prefix
  loop do
    a=oldc.grep {|c| ! SimpleColor.color?(c)}
    b=newc.grep {|c| ! SimpleColor.color?(c)}
    if !seen_pm and a=="-" and b=="+"
      seen_pm=true
    elsif a==b
    else
      last
    end
  #rescue StopIteration
  end
end

#new_hunk ⇒ Object

# File 'lib/git_helpers/diff.rb', line 422

def new_hunk
  super
  @accumulator=[[],[]]
end

#show_hunk ⇒ Object

# File 'lib/git_helpers/diff.rb', line 449

def show_hunk
  old,new=@accumulator
  if old.length != new.length
    output_lines(old+new)
  else
    newhunk=[]
    (0...old.length).each do |i|
      oldi,newi=highlight_pair(old[i],new[i])
      output_line oldi
      newhunk << newi
    end
    output_lines(newhunk)
  end
end