119 lines
2.7 KiB
Ruby
Executable file
119 lines
2.7 KiB
Ruby
Executable file
#!/usr/bin/env ruby
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# Wrag stands for writeable-ag; a hacky script that allows you to search with ag
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# <https://github.com/ggreer/the_silver_searcher> and edit the results in
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# $EDITOR. The changes are propagated to all listed files, if any.
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#
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# Usage: wrag [pattern]
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#
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# TODO Also rename changed filenames
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# TODO Assemble sed string to make this atomic
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require 'optparse'
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require 'tempfile'
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require 'shellwords'
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def usage
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puts "Usage: #{File.basename($0)} [-f|--rename-files] [-b|--backup] search_string"
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puts "\nAny of ag's flags will work with wrag"
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exit
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end
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usage if ARGV.empty?
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## Parsing options ################################
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options = {:rename => false,
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:backup => false}
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opt = OptionParser.new
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opt.on('-f', '--rename-files') { options[:rename] = true }
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opt.on('-b', '--backup') { options[:backup] = true }
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begin
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opt.parse
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# Get rid of misc args to pass the rest to ag
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args = ARGV - ["-f", "--rename-files", "-b", "--backup"]
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rescue OptionParser::InvalidOption => e
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puts "Invalid option: #{e}"
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usage
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end
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## Perform search #################################
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t = Tempfile.new('.ag-results')
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out = system("ag #{args.join(' ')} --group --nocolor > #{t.path}")
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puts "No matches" if out === false
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if out == nil
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t.unlink
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exit 2
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end
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old_lines = File.open(t.path).readlines
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system("#{ENV['EDITOR']} #{t.path}")
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lines = File.open(t.path).readlines
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t.unlink
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if old_lines.length != lines.length
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puts "There was a line-number mismatch. Abort! Abort! Abort!"
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exit 3
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end
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## Parse edited output ############################
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i = nil
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current_filename = nil
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lines.each_with_index do |line, i|
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line.strip!
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next if line.empty?
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if line =~ /^([0-9]+):(.+)/ # make sure it isn't actually a file
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filename = current_filename
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lineno = $1
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content = $2
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elsif line =~ /^(.+):([0-9]+):(.+)/
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if current_file
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puts "Mixing and matching groups and non-groups! Aborting."
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exit 3
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end
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filename = $1
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lineno = $2
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content = $3
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elsif File.exists?(line)
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if File.readable?(line)
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current_filename = line
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else
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puts "#{line} isn't readable. Skipping."
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end
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next
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else
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puts "Malformed line: #{line}"
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exit 3
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end
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next if line.eql?(old_lines[i].strip)
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filename = Shellwords.escape(filename)
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lineno = Shellwords.escape(lineno)
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content = content.gsub("'", "\\'")
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puts "#{filename}:#{lineno}:#{content}"
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if system("sed -i .bak '#{lineno}c\\
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#{content}
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' #{filename}")
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puts "Replaced: line #{lineno} in #{filename}"
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else
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puts "Failed to replace line #{lineno} in #{filename}"
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end
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unless options[:backup]
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system("rm -f #{filename}.bak") if File.exists?("#{filename}.bak")
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end
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end
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if i === nil
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puts "Didn't do nuthin'"
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else
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puts "Done!"
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end
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