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require_relative 'vpath'
require_relative 'colorize'
class Output
attr_reader :path, :vpath
def initialize
@path = @timestamp = @ifchange = @color = nil
@vpath = VPath.new
end
def def_options(opt)
opt.separator(" Output common options:")
opt.on('-o', '--output=PATH') {|v| @path = v}
opt.on('-t', '--timestamp[=PATH]') {|v| @timestamp = v || true}
opt.on('-c', '--[no-]if-change') {|v| @ifchange = v}
opt.on('--color') {@color = true}
@vpath.def_options(opt)
end
def write(data, overwrite: false, create_only: false)
unless @path
$stdout.print data
return true
end
color = Colorize.new(@color)
unchanged = color.pass("unchanged")
updated = color.fail("updated")
outpath = nil
if (@ifchange or overwrite or create_only) and (@vpath.open(@path, "rb") {|f|
outpath = f.path
if @ifchange or create_only
original = f.read
(@ifchange and original == data) or (create_only and !original.empty?)
end
} rescue false)
puts "#{outpath} #{unchanged}"
written = false
else
unless overwrite and outpath and (File.binwrite(outpath, data) rescue nil)
File.binwrite(outpath = @path, data)
end
puts "#{outpath} #{updated}"
written = true
end
if timestamp = @timestamp
if timestamp == true
dir, base = File.split(@path)
timestamp = File.join(dir, ".time." + base)
end
File.binwrite(timestamp, '')
File.utime(nil, nil, timestamp)
end
written
end
end
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