Add option to specify output directory.

lib/gly/cli.rb

@@ -12,9 +12,10 @@ class CLI < Thor
 
     desc 'gabc FILE ...', 'convert gly to gabc'
     option :output, type: :string, aliases: :o, banner: 'specify output file name (or template of file names)'
+    option :output_directory, aliases: :d, type: :string, banner: 'specify output directory'
     def gabc(*files)
       files.each do |f|
-        DocumentGabcConvertor.new(parser.parse(f), output_file: options[:output]).convert
+        DocumentGabcConvertor.new(parser.parse(f), output_file: options[:output], output_directory: options[:output_directory]).convert
       end
     rescue Gly::Exception => ex
       error_exit! ex
@@ -25,6 +26,7 @@ def gabc(*files)
     option :no_document, type: :boolean, aliases: :D, banner: 'produce main LaTeX file without document definition; in this case --no-build is applied automatically'
     option :full_headers, type: :boolean, aliases: :H, banner: 'include full document and score headers'
     option :template, aliases: :t, banner: 'use custom document template'
+    option :output_directory, aliases: :d, type: :string, banner: 'specify output directory'
     def preview(*files)
       tpl = nil
       if options[:template]
@@ -89,11 +91,12 @@ def list(*files)
     end
 
     desc 'ly FILE ...', 'transform gly document to lilypond document'
+    option :output_directory, aliases: :d, type: :string, banner: 'specify output directory'
     def ly(*files)
       check_lygre_available!
 
       files.each do |f|
-        DocumentLyConvertor.new(parser.parse(f)).convert
+        DocumentLyConvertor.new(parser.parse(f), output_directory: options[:output_directory]).convert
       end
 
     rescue Gly::Exception => ex

lib/gly/document_gabc_convertor.rb

@@ -4,14 +4,15 @@ def initialize(document, options={})
       @doc = document
       @options = options
       @output_name_base = @options[:output_file] || File.basename(@doc.path)
+      @output_directory = @options[:output_directory] || '.'
     end
 
     def convert
       each_score_with_gabcname do |score, out_fname|
         if @output_name_base == '-'
           convert_to STDOUT, score
         else
-          File.open(out_fname, 'w') do |fw|
+          File.open("#{@output_directory}/#{out_fname}", 'w') do |fw|
             convert_to fw, score
           end
         end

lib/gly/document_ly_convertor.rb

@@ -6,8 +6,10 @@ module Gly
   # expects the 'lygre' gem
   # (which is only an optional dependency of gly)
   class DocumentLyConvertor
-    def initialize(document)
+    def initialize(document, options={})
       @doc = document
+      @options = options
+      @output_directory = @options[:output_directory] || '.'
     end
 
     def convert
@@ -37,7 +39,7 @@ def convert
       end
 
       out_fname = File.basename(@doc.path) + '.ly'
-      File.open(out_fname, 'w') do |fw|
+      File.open("#{@output_directory}/#{out_fname}", 'w') do |fw|
         fw.puts ly_output.string
       end
     end

lib/gly/preview_builder.rb

@@ -2,9 +2,10 @@ module Gly
   # *builds* the pdf preview from assets prepared
   # by PreviewGenerator
   class PreviewBuilder
-    def initialize
+    def initialize(**options)
       @gabcs = []
       @main_tex = nil
+      @options = options.delete(:options) || {}
     end
 
     def add_gabc(path)
@@ -14,12 +15,14 @@ def add_gabc(path)
     attr_accessor :main_tex
 
     def build
-      @gabcs.each do |g|
-        outfile = g.sub /(\.gabc)?$/i, '.gtex'
-        benevolent_exec('gregorio', '-o', outfile, g)
+      output_directory = @options[:output_directory] || '.'
+      Dir.chdir(output_directory) do
+        @gabcs.each do |g|
+          outfile = g.sub /(\.gabc)?$/i, '.gtex'
+          benevolent_exec('gregorio', '-o', outfile, g)
+        end
+        exec 'lualatex', '--interaction=nonstopmode', @main_tex
       end
-
-      exec 'lualatex', '--interaction=nonstopmode', @main_tex
     end
 
     private

lib/gly/preview_generator.rb

@@ -8,8 +8,8 @@ def initialize(**options)
       @preview_dest = nil
 
       @template = options.delete(:template) || default_template
-      @builder = options.delete(:builder) || PreviewBuilder.new
       @options = options.delete(:options) || {}
+      @builder = options.delete(:builder) || PreviewBuilder.new(options: @options)
     end
 
     # IO to which the main LaTeX document should be written.
@@ -101,7 +101,8 @@ def with_preview_io(src_name)
         return
       end
 
-      File.open(preview_fname(src_name), 'w') do |fw|
+      output_directory = @options[:output_directory] || '.'
+      File.open("#{output_directory}/#{preview_fname(src_name)}", 'w') do |fw|
         yield fw
       end
     end