From e3459991bcd4d97bc84241fe625f82cefdff2377 Mon Sep 17 00:00:00 2001
From: "Glenn Y. Rolland" <glenux@glenux.net>
Date: Sat, 21 Dec 2019 20:30:31 +0100
Subject: [PATCH] Rename namarara executable to namarara-cli

---
 exe/namarara     | 46 -------------------------------
 exe/namarara-cli | 72 ++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 72 insertions(+), 46 deletions(-)
 delete mode 100755 exe/namarara
 create mode 100755 exe/namarara-cli

diff --git a/exe/namarara b/exe/namarara
deleted file mode 100755
index 9dc6c54..0000000
--- a/exe/namarara
+++ /dev/null
@@ -1,46 +0,0 @@
-#!/usr/bin/env ruby
-
-$:.insert(0, 'lib')
-
-require 'thor'
-require 'rly'
-require 'pry'
-require 'namarara'
-require 'pp'
-require 'logger'
-
-module Namarara
-  class ParseCli < Thor
-    desc 'parse OPTIONS INFILE VARS', 'Parse INFILE into tokens and evaluate VARS'
-    method_option :logfile, :type => :string, :aliases => '-l', :default => '-', :desc => "Logger with logfile"
-    def parse(infile, *vars)
-      unless options[:logfile].eql? '-'
-        logger = Logger.new("#{options[:logfile]}.log")
-      else
-        logger = Logger.new(STDOUT)
-      end
-      line = File.read(infile).gsub(/\n/,'')
-      lexer = Lexer.new(logger)
-      parser = Parser.new(lexer)
-      tab_vars = {}
-      vars.each do |var|
-        tab_vars[var.split('=')[0]] = var.split('=')[1]
-      end
-
-      # Give vars name and value from shell command to parser
-      parser.names=tab_vars
-
-      token = parser.parse(line.chomp, true)
-      pp token
-      puts "RAW : #{line}"
-      puts "EVAL: #{token.to_s}"
-      parser.check_grammar line, token
-      exit 1 unless !token.nil? && token.errors.empty?
-
-      puts "RESULT: #{token.compute}"
-
-    end
-  end
-end
-
-Namarara::ParseCli.start(ARGV)
diff --git a/exe/namarara-cli b/exe/namarara-cli
new file mode 100755
index 0000000..3c9656c
--- /dev/null
+++ b/exe/namarara-cli
@@ -0,0 +1,72 @@
+#!/usr/bin/env ruby
+
+$:.insert(0, 'lib')
+
+require 'thor'
+require 'rly'
+require 'namarara'
+require 'json'
+
+module Namarara
+  class ParseCli < Thor
+    class_option :debug, 
+      type: :boolean, 
+      aliases: '-d', 
+      default: false, 
+      desc: "Enable debugging output"
+    class_option :format, 
+      type: :string, 
+      aliases: '-f', 
+      default: 'text', 
+      enum: ['text','json'],
+      desc: "Output format"
+
+    desc 'file FILE VARS', 
+      'Parse FILE into tokens then compute with VARS'
+    def file(infile, *vars)
+      line = File.read(infile).gsub(/\n/,'')
+      vars_hash = get_vars_hash(vars)
+      res = parse_string(line, vars_hash, options[:debug])
+      puts format(res, options[:format])
+    end
+
+    desc 'string STRING VARS', 
+      'Parse STRING into tokens then compute with VARS'
+    def string(line, *vars)
+      vars_hash = get_vars_hash(vars)
+      res = parse_string(line, vars_hash, options[:debug])
+      puts format(res, options[:format])
+    end
+
+    private
+
+    # Convert VAR=value list into hash
+    def get_vars_hash(vars)
+      tab_vars = {}
+      vars.each do |var|
+        tab_vars[var.split('=')[0]] = var.split('=')[1]
+      end
+      tab_vars
+    end
+
+    def format(result, format)
+      case format 
+      when 'text' then
+        txt = []
+        txt << "EXPR: #{result[:expr]}"
+        txt << "TREE: #{result[:tree]}"
+        result[:errors].each do |error|
+          txt << "ERROR: #{error}"
+        end
+        txt << "RESULT: #{result[:result]}"
+        txt.join("\n")
+      when 'json'
+        JSON.generate(result)
+      else
+        raise 'Unknown output format'
+      end
+    end
+  end
+end
+
+Namarara::ParseCli.start(ARGV)