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Add support for combined flags

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Omar Roth 2019-09-19 09:49:59 -04:00
parent 1505d7c12c
commit da240ace81
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1 changed files with 28 additions and 7 deletions
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35
src/protodec.cr
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@ -167,6 +167,7 @@ end
input_type = InputType::Raw
output_type = OutputType::Json
flags = [] of String
OptionParser.parse! do |parser|
parser.banner = <<-'END_USAGE'
@ -174,11 +175,31 @@ OptionParser.parse! do |parser|
Command-line decoder for arbitrary protobuf data. Reads from standard input.
END_USAGE
parser.on("-d", "--decode", "STDIN is Base64-encoded") { input_type = InputType::Base64 }
parser.on("-x", "--hex", "STDIN is space-separated hexstring") { input_type = InputType::Hex }
parser.on("-r", "--raw", "STDIN is raw binary data (default)") { input_type = InputType::Raw }
parser.on("-p", "--pretty", "Pretty print output") { output_type = OutputType::JsonPretty }
parser.on("-h", "--help", "Show this help") { puts parser; exit(0) }
parser.on("-d", "--decode", "STDIN is Base64-encoded") { flags << "d" }
parser.on("-x", "--hex", "STDIN is space-separated hexstring") { flags << "x" }
parser.on("-r", "--raw", "STDIN is raw binary data (default)") { flags << "r" }
parser.on("-p", "--pretty", "Pretty print output") { flags << "p" }
parser.on("-h", "--help", "Show this help") { STDOUT.puts parser; exit(0) }
parser.invalid_option do |option|
flags += option.split("")[1..-1]
end
end
flags.each do |flag|
case flag
when "d"
input_type = InputType::Base64
when "x"
input_type = InputType::Hex
when "r"
input_type = InputType::Raw
when "p"
output_type = OutputType::JsonPretty
else
STDERR.puts "ERROR: #{flag} is not a valid option."
exit(1)
end
end
input = STDIN.gets_to_end
@ -194,7 +215,7 @@ end
output = ProtoBuf::Any.parse(IO::Memory.new(input))
case output_type
when OutputType::Json
puts output.to_json
STDOUT.puts output.to_json
when OutputType::JsonPretty
puts output.to_pretty_json
STDOUT.puts output.to_pretty_json
end