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0e27430e24
This was used by GetoptLong but we switched to OptionParser in 2df7620b8d.
Also remove setting $KCODE (for ruby 1.8 compatibility).
69 lines
1.6 KiB
Ruby
Executable File
69 lines
1.6 KiB
Ruby
Executable File
#!/System/Library/Frameworks/Ruby.framework/Versions/Current/usr/bin/ruby
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require 'optparse'
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require 'shellwords'
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def parse_variables(path)
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res = { }
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data = File.read(path)
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assignments = data.scan(/^(\w+)\s*(=)[ \t]*(.*)$/)
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assignments.each do |arr|
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key, op, value = *arr
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res[key] = Shellwords.shellwords(value)
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end
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res
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end
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variables = { }
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outfile = nil
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OptionParser.new do |opts|
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opts.banner = "Usage: expand_variables [options]"
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opts.separator "Synopsis:"
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opts.separator "expand_variables: substitute ${VARIABLES} in text files"
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opts.separator "Options:"
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opts.on("-h","--help", "show help.") do |v|
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puts opts
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exit
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end
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opts.on("-v","--variables FILE", "read variables from FILE.") do |arg|
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variables.merge!(parse_variables(arg))
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end
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opts.on("-d", "--define NAME=VALUE", "set variable NAME to VALUE.") do |arg|
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if arg =~ /^(\w+)\s*(=)[ \t]*(.*)$/
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variables[$1] = Shellwords.shellwords($3)
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end
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end
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opts.on("-o", "--output FILE", "write output to FILE.") do |arg|
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outfile = arg
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end
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end.parse!
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data, enc = ARGF.binmode.read, Encoding::UTF_8
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if data.start_with?("\xFE\xFF".b)
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enc = Encoding::UTF_16BE
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elsif data.start_with?("\xFF\xFE".b)
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enc = Encoding::UTF_16LE
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end
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data.force_encoding(enc)
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data.encode!(Encoding::UTF_8) if enc != Encoding::UTF_8
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data.gsub!(/\$\{(.*?)\}/) do
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value = nil
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if variables.include?($1)
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value = variables[$1]
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elsif ENV.include?($1)
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value = ENV[$1]
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else
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abort "*** unknown variable: ‘#$1’"
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end
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value.kind_of?(Array) ? value.join(' ') : value
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end
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io = outfile ? open(outfile, 'w') : STDOUT
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io.set_encoding(enc)
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io << data
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io.close
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