73 lines
1.7 KiB
Ruby
Executable file
73 lines
1.7 KiB
Ruby
Executable file
#!/usr/bin/env ruby
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$:.insert(0, 'lib')
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require 'thor'
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require 'rly'
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require 'namarara'
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require 'json'
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module Namarara
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class ParseCli < Thor
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class_option :debug,
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type: :boolean,
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aliases: '-d',
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default: false,
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desc: "Enable debugging output"
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class_option :format,
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type: :string,
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aliases: '-f',
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default: 'text',
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enum: ['text','json'],
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desc: "Output format"
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desc 'file FILE VARS',
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'Parse FILE into tokens then compute with VARS'
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def file(infile, *vars)
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line = File.read(infile).gsub(/\n/,'')
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vars_hash = get_vars_hash(vars)
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res = parse_string(line, vars_hash, options[:debug])
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puts format(res, options[:format])
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end
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desc 'string STRING VARS',
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'Parse STRING into tokens then compute with VARS'
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def string(line, *vars)
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vars_hash = get_vars_hash(vars)
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res = parse_string(line, vars_hash, options[:debug])
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puts format(res, options[:format])
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end
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private
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# Convert VAR=value list into hash
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def get_vars_hash(vars)
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tab_vars = {}
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vars.each do |var|
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tab_vars[var.split('=')[0]] = var.split('=')[1]
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end
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tab_vars
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end
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def format(result, format)
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case format
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when 'text' then
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txt = []
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txt << "EXPR: #{result[:expr]}"
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txt << "TREE: #{result[:tree]}"
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result[:errors].each do |error|
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txt << "ERROR: #{error}"
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end
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txt << "RESULT: #{result[:result]}"
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txt.join("\n")
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when 'json'
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JSON.generate(result)
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else
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raise 'Unknown output format'
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end
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end
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end
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end
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Namarara::ParseCli.start(ARGV)
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