mirror of
https://github.com/junegunn/fzf.vim.git
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60 lines
1.3 KiB
Ruby
Executable File
60 lines
1.3 KiB
Ruby
Executable File
#!/usr/bin/env ruby
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#
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# usage: ./preview.rb FILENAME[:LINE][:IGNORED]
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require 'open3'
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require 'shellwords'
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COMMAND = ENV.fetch(
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'FZF_PREVIEW_COMMAND',
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%[bat --style=numbers --color=always {} || highlight -O ansi -l {} || coderay {} || rougify {} || cat {}]
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)
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ANSI = /\x1b\[[0-9;]*m/
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REVERSE = "\x1b[7m"
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RESET = "\x1b[m"
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def usage
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puts "usage: #$0 FILENAME[:LINENO][:IGNORED]"
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exit 1
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end
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usage if ARGV.empty?
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file, center, extra = ARGV.first.split(':')
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if ARGV.first =~ /^[A-Z]:\\/
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file << ':' + center
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center = extra
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end
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usage unless file
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path = File.expand_path(file)
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unless File.readable? path
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puts "File not found: #{file}"
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exit 1
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end
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if `file --dereference --mime "#{file}"` =~ /binary/
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puts "#{file} is a binary file"
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exit 0
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end
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center = (center || 0).to_i
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height =
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if ENV['LINES']
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ENV['LINES'].to_i
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else
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File.readable?('/dev/tty') ? `stty size < /dev/tty`.split.first.to_i : 40
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end
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offset = [1, center - height / 3].max
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Open3.popen3(COMMAND.gsub('{}', Shellwords.shellescape(path))) do |_in, out, _err|
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out.each_line.drop(offset - 1).take(height).each_with_index do |line, lno|
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if lno + offset == center
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puts REVERSE + line.chomp.gsub(ANSI) { |m| m + REVERSE } + RESET
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else
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puts line
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end
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end
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end
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print RESET
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