configs/vim/ruby/command-t/scanner/jump_scanner.rb

# Copyright 2011 Wincent Colaiuta. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice,
#    this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright notice,
#    this list of conditions and the following disclaimer in the documentation
#    and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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require 'command-t/vim'
require 'command-t/vim/path_utilities'
require 'command-t/scanner'

module CommandT
  # Returns a list of files in the jumplist.
  class JumpScanner < Scanner
    include VIM::PathUtilities

    def paths
      jumps_with_filename = jumps.lines.select do |line|
        line_contains_filename?(line)
      end
      filenames = jumps_with_filename[1..-2].map do |line|
        relative_path_under_working_directory line.split[3]
      end

      filenames.sort.uniq
    end

  private

    def line_contains_filename? line
      line.split.count > 3
    end

    def jumps
      VIM::capture 'silent jumps'
    end
  end # class JumpScanner
end # module CommandT