Class: Rpatch::PatchEntry

Inherits:
Object
  • Object
show all
Defined in:
lib/rpatch/entry.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(old, new, level) ⇒ PatchEntry

Returns a new instance of PatchEntry.



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# File 'lib/rpatch/entry.rb', line 14

def initialize(old, new, level)
  @entry_old = old
  @entry_new = new
  @level = level
  @hunks = []
end

Instance Attribute Details

#level ⇒ Object (readonly)

Returns the value of attribute level.



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# File 'lib/rpatch/entry.rb', line 12

def level
  @level
end

Instance Method Details

#feed_line(line) ⇒ Object 



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# File 'lib/rpatch/entry.rb', line 29

def feed_line(line)
  if line =~ /^@@/
    hunk = PatchHunk.new line, @hunks.size + 1
    @hunks << hunk
  elsif @hunks.any?
    @hunks[-1].feed_line line
  else
    raise PatchFormatError, "Feed lines must start with @@, not: #{line}"
  end
end

#newfile ⇒ Object 



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# File 'lib/rpatch/entry.rb', line 25

def newfile
  @newfile ||= path_strip_prefix(@entry_new, @level)
end

#oldfile ⇒ Object 



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# File 'lib/rpatch/entry.rb', line 21

def oldfile
  @oldfile ||= path_strip_prefix(@entry_old, @level)
end

#patch_on_directory(inputdir, outputdir = nil) ⇒ Object 



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# File 'lib/rpatch/entry.rb', line 122

def patch_on_directory(inputdir, outputdir=nil)
  outputdir ||= inputdir
  if oldfile == '/dev/null'
    input = newfile.start_with?('/') ? newfile : File.join(inputdir, newfile)
  else
    input = oldfile.start_with?('/') ? oldfile : File.join(inputdir, oldfile)
  end
  output = newfile.start_with?('/') ? newfile : File.join(outputdir, newfile)
  patch_on_file(input, output)
end

#patch_on_file(input, output = nil) ⇒ Object 



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# File 'lib/rpatch/entry.rb', line 57

def patch_on_file(input, output=nil)
  lines = []
  output ||= input
  if output.is_a? IO or output.is_a? StringIO
  	filename = "<#{newfile}>"
  else
  	filename = output
    unless File.exist?(File.dirname(output))
      FileUtils.mkdir_p File.dirname(output)
    end
  end

  if input.is_a? IO or input.is_a? StringIO
    lines = input.readlines.map{|line| line.chomp}
  elsif File.file? input
    File.open(input) do |io|
      lines = io.readlines.map{|line| line.chomp}
    end
  end
  lines_dup = lines.dup

  patch_applied = false
  patch_status = true
  @hunks.each do |hunk|
    begin
      hunk.patch(lines)
    rescue AlreadyPatchedError => e
      Tty.info "#{filename}: #{e.message}"
    rescue Exception => e
      Tty.error "#{filename}: #{e.message}"
      patch_status = false
    else
      patch_applied = true
    end
  end

  if output.is_a? IO or output.is_a? StringIO
    output.write lines * "\n" + "\n"
  elsif not patch_applied
    Tty.notice "#{filename}: nothing changed"
    if input != output
      File.open(output, "w") do |io|
        io.write lines * "\n" + "\n"
      end
    end
  else
    unless patch_status
      Tty.warning "saved orignal file as \"#{output}.orig\"."
      File.open("#{output}.orig", "w") do |io|
        io.write lines_dup * "\n" + "\n"
      end
    end
    if lines.size > 0
      File.open(output, "w") do |io|
        io.write lines * "\n" + "\n"
      end
      Tty.notice "Patched \"#{output}\"."
    else
      File.unlink output
      Tty.notice "Remove \"#{output}\"."
    end
  end
  return patch_status
end

#patch_on_message(text) ⇒ Object

Used in test cases.



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# File 'lib/rpatch/entry.rb', line 41

def patch_on_message(text)
  lines = text.split("\n").map{|line| line.chomp}

  @hunks.each do |hunk|
    hunk.patch(lines)
  end

  if lines.size > 0
    lines * "\n" + "\n"
  else
    ''
  end
rescue Exception => e
  Tty.error e.message
end