Class | Diffy::Diff |
In: |
lib/diffy/diff.rb
|
Parent: | Object |
default_format | [W] | |
default_options | [W] | |
diff | [R] | |
options | [R] | |
string1 | [R] | |
string2 | [R] |
supported options
+:diff+: | A cli options string passed to diff |
+:source+: | Either strings or files. Determines whether string1 and string2 should be interpreted as strings or file paths. |
+:include_diff_info+: | Include diff header info |
+:include_plus_and_minus_in_html+: | Show the +, -, ’ ’ at the beginning of lines in html output. |
# File lib/diffy/diff.rb, line 32 def initialize(string1, string2, options = {}) @options = self.class.default_options.merge(options) if ! ['strings', 'files'].include?(@options[:source]) raise ArgumentError, "Invalid :source option #{@options[:source].inspect}. Supported options are 'strings' and 'files'." end @string1, @string2 = string1, string2 end
# File lib/diffy/diff.rb, line 40 def diff @diff ||= begin paths = case options[:source] when 'strings' [tempfile(string1), tempfile(string2)] when 'files' [string1, string2] end if WINDOWS # don't use open3 on windows cmd = "#{diff_bin} #{diff_options.join(' ')} #{paths.join(' ')}" diff = `#{cmd}` else diff = Open3.popen3(diff_bin, *(diff_options + paths)) { |i, o, e| o.read } end diff.force_encoding('ASCII-8BIT') if diff.respond_to?(:valid_encoding?) && !diff.valid_encoding? if diff =~ /\A\s*\Z/ && !options[:allow_empty_diff] diff = case options[:source] when 'strings' then string1 when 'files' then File.read(string1) end.gsub(/^/, " ") end diff end end
# File lib/diffy/diff.rb, line 67 def each lines = case @options[:include_diff_info] when false then diff.split("\n").reject{|x| x =~ /^(---|\+\+\+|@@|\\\\)/ }.map {|line| line + "\n" } when true then diff.split("\n").map {|line| line + "\n" } end if block_given? lines.each{|line| yield line} else lines.to_enum end end
# File lib/diffy/diff.rb, line 79 def each_chunk old_state = nil chunks = inject([]) do |cc, line| state = line.each_char.first if state == old_state cc.last << line else cc.push line.dup end old_state = state cc end if block_given? chunks.each{|chunk| yield chunk } else chunks.to_enum end end
# File lib/diffy/diff.rb, line 99 def tempfile(string) t = Tempfile.new('diffy') # ensure tempfiles aren't unlinked when GC runs by maintaining a # reference to them. @tempfiles ||=[] @tempfiles.push(t) t.print(string) t.flush t.close t.path end
# File lib/diffy/diff.rb, line 111 def to_s(format = nil) format ||= self.class.default_format formats = Format.instance_methods(false).map{|x| x.to_s} if formats.include? format.to_s enum = self enum.extend Format enum.send format else raise ArgumentError, "Format #{format.inspect} not found in #{formats.inspect}" end end