convert.rb in asciidoctor-2.0.11

- old
+ new
@@ -1,193 +1,198 @@
 module Asciidoctor
-  module_function
+  class << self
+    # Public: Parse the AsciiDoc source input into an Asciidoctor::Document and
+    # convert it to the specified backend format.
+    #
+    # Accepts input as an IO (or StringIO), String or String Array object. If the
+    # input is a File, the object is expected to be opened for reading and is not
+    # closed afterwards by this method. Information about the file (filename,
+    # directory name, etc) gets assigned to attributes on the Document object.
+    #
+    # If the :to_file option is true, and the input is a File, the output is
+    # written to a file adjacent to the input file, having an extension that
+    # corresponds to the backend format. Otherwise, if the :to_file option is
+    # specified, the file is written to that file. If :to_file is not an absolute
+    # path, it is resolved relative to :to_dir, if given, otherwise the
+    # Document#base_dir. If the target directory does not exist, it will not be
+    # created unless the :mkdirs option is set to true. If the file cannot be
+    # written because the target directory does not exist, or because it falls
+    # outside of the Document#base_dir in safe mode, an IOError is raised.
+    #
+    # If the output is going to be written to a file, the header and footer are
+    # included unless specified otherwise (writing to a file implies creating a
+    # standalone document). Otherwise, the header and footer are not included by
+    # default and the converted result is returned.
+    #
+    # input   - the String AsciiDoc source filename
+    # options - a String, Array or Hash of options to control processing (default: {})
+    #           String and Array values are converted into a Hash.
+    #           See Asciidoctor::Document#initialize for details about options.
+    #
+    # Returns the Document object if the converted String is written to a
+    # file, otherwise the converted String
+    def convert input, options = {}
+      (options = options.merge).delete :parse
+      to_dir = options.delete :to_dir
+      mkdirs = options.delete :mkdirs
 
-  # Public: Parse the AsciiDoc source input into an Asciidoctor::Document and
-  # convert it to the specified backend format.
-  #
-  # Accepts input as an IO (or StringIO), String or String Array object. If the
-  # input is a File, the object is expected to be opened for reading and is not
-  # closed afterwards by this method. Information about the file (filename,
-  # directory name, etc) gets assigned to attributes on the Document object.
-  #
-  # If the :to_file option is true, and the input is a File, the output is
-  # written to a file adjacent to the input file, having an extension that
-  # corresponds to the backend format. Otherwise, if the :to_file option is
-  # specified, the file is written to that file. If :to_file is not an absolute
-  # path, it is resolved relative to :to_dir, if given, otherwise the
-  # Document#base_dir. If the target directory does not exist, it will not be
-  # created unless the :mkdirs option is set to true. If the file cannot be
-  # written because the target directory does not exist, or because it falls
-  # outside of the Document#base_dir in safe mode, an IOError is raised.
-  #
-  # If the output is going to be written to a file, the header and footer are
-  # included unless specified otherwise (writing to a file implies creating a
-  # standalone document). Otherwise, the header and footer are not included by
-  # default and the converted result is returned.
-  #
-  # input   - the String AsciiDoc source filename
-  # options - a String, Array or Hash of options to control processing (default: {})
-  #           String and Array values are converted into a Hash.
-  #           See Asciidoctor::Document#initialize for details about options.
-  #
-  # Returns the Document object if the converted String is written to a
-  # file, otherwise the converted String
-  def convert input, options = {}
-    (options = options.merge).delete :parse
-    to_dir = options.delete :to_dir
-    mkdirs = options.delete :mkdirs
-
-    case (to_file = options.delete :to_file)
-    when true, nil
-      unless (write_to_target = to_dir)
-        sibling_path = ::File.absolute_path input.path if ::File === input
+      case (to_file = options.delete :to_file)
+      when true, nil
+        unless (write_to_target = to_dir)
+          sibling_path = ::File.absolute_path input.path if ::File === input
+        end
+        to_file = nil
+      when false
+        to_file = nil
+      when '/dev/null'
+        return load input, options
+      else
+        options[:to_file] = write_to_target = to_file unless (stream_output = to_file.respond_to? :write)
       end
-      to_file = nil
-    when false
-      to_file = nil
-    when '/dev/null'
-      return load input, options
-    else
-      options[:to_file] = write_to_target = to_file unless (stream_output = to_file.respond_to? :write)
-    end
 
-    unless options.key? :standalone
-      if sibling_path || write_to_target
-        options[:standalone] = options.fetch :header_footer, true
-      elsif options.key? :header_footer
-        options[:standalone] = options[:header_footer]
+      unless options.key? :standalone
+        if sibling_path || write_to_target
+          options[:standalone] = options.fetch :header_footer, true
+        elsif options.key? :header_footer
+          options[:standalone] = options[:header_footer]
+        end
       end
-    end
 
-    # NOTE outfile may be controlled by document attributes, so resolve outfile after loading
-    if sibling_path
-      options[:to_dir] = outdir = ::File.dirname sibling_path
-    elsif write_to_target
-      if to_dir
-        if to_file
-          options[:to_dir] = ::File.dirname ::File.expand_path ::File.join to_dir, to_file
-        else
-          options[:to_dir] = ::File.expand_path to_dir
+      # NOTE outfile may be controlled by document attributes, so resolve outfile after loading
+      if sibling_path
+        options[:to_dir] = outdir = ::File.dirname sibling_path
+      elsif write_to_target
+        if to_dir
+          if to_file
+            options[:to_dir] = ::File.dirname ::File.expand_path to_file, to_dir
+          else
+            options[:to_dir] = ::File.expand_path to_dir
+          end
+        elsif to_file
+          options[:to_dir] = ::File.dirname ::File.expand_path to_file
         end
-      elsif to_file
-        options[:to_dir] = ::File.dirname ::File.expand_path to_file
       end
-    end
 
-    # NOTE :to_dir is always set when outputting to a file
-    # NOTE :to_file option only passed if assigned an explicit path
-    doc = load input, options
+      # NOTE :to_dir is always set when outputting to a file
+      # NOTE :to_file option only passed if assigned an explicit path
+      doc = load input, options
 
-    if sibling_path # write to file in same directory
-      outfile = ::File.join outdir, %(#{doc.attributes['docname']}#{doc.outfilesuffix})
-      raise ::IOError, %(input file and output file cannot be the same: #{outfile}) if outfile == sibling_path
-    elsif write_to_target # write to explicit file or directory
-      working_dir = (options.key? :base_dir) ? (::File.expand_path options[:base_dir]) : ::Dir.pwd
-      # QUESTION should the jail be the working_dir or doc.base_dir???
-      jail = doc.safe >= SafeMode::SAFE ? working_dir : nil
-      if to_dir
-        outdir = doc.normalize_system_path(to_dir, working_dir, jail, target_name: 'to_dir', recover: false)
-        if to_file
-          outfile = doc.normalize_system_path(to_file, outdir, nil, target_name: 'to_dir', recover: false)
-          # reestablish outdir as the final target directory (in the case to_file had directory segments)
+      if sibling_path # write to file in same directory
+        outfile = ::File.join outdir, %(#{doc.attributes['docname']}#{doc.outfilesuffix})
+        raise ::IOError, %(input file and output file cannot be the same: #{outfile}) if outfile == sibling_path
+      elsif write_to_target # write to explicit file or directory
+        working_dir = (options.key? :base_dir) ? (::File.expand_path options[:base_dir]) : ::Dir.pwd
+        # QUESTION should the jail be the working_dir or doc.base_dir???
+        jail = doc.safe >= SafeMode::SAFE ? working_dir : nil
+        if to_dir
+          outdir = doc.normalize_system_path(to_dir, working_dir, jail, target_name: 'to_dir', recover: false)
+          if to_file
+            outfile = doc.normalize_system_path(to_file, outdir, nil, target_name: 'to_dir', recover: false)
+            # reestablish outdir as the final target directory (in the case to_file had directory segments)
+            outdir = ::File.dirname outfile
+          else
+            outfile = ::File.join outdir, %(#{doc.attributes['docname']}#{doc.outfilesuffix})
+          end
+        elsif to_file
+          outfile = doc.normalize_system_path(to_file, working_dir, jail, target_name: 'to_dir', recover: false)
+          # establish outdir as the final target directory (in the case to_file had directory segments)
           outdir = ::File.dirname outfile
+        end
+
+        if ::File === input && outfile == (::File.absolute_path input.path)
+          raise ::IOError, %(input file and output file cannot be the same: #{outfile})
+        end
+
+        if mkdirs
+          Helpers.mkdir_p outdir
         else
-          outfile = ::File.join outdir, %(#{doc.attributes['docname']}#{doc.outfilesuffix})
+          # NOTE we intentionally refer to the directory as it was passed to the API
+          raise ::IOError, %(target directory does not exist: #{to_dir} (hint: set :mkdirs option)) unless ::File.directory? outdir
         end
-      elsif to_file
-        outfile = doc.normalize_system_path(to_file, working_dir, jail, target_name: 'to_dir', recover: false)
-        # establish outdir as the final target directory (in the case to_file had directory segments)
-        outdir = ::File.dirname outfile
+      else # write to stream
+        outfile = to_file
+        outdir = nil
       end
 
-      if ::File === input && outfile == (::File.absolute_path input.path)
-        raise ::IOError, %(input file and output file cannot be the same: #{outfile})
-      end
-
-      if mkdirs
-        Helpers.mkdir_p outdir
+      if outfile && !stream_output
+        output = doc.convert 'outfile' => outfile, 'outdir' => outdir
       else
-        # NOTE we intentionally refer to the directory as it was passed to the API
-        raise ::IOError, %(target directory does not exist: #{to_dir} (hint: set :mkdirs option)) unless ::File.directory? outdir
+        output = doc.convert
       end
-    else # write to stream
-      outfile = to_file
-      outdir = nil
-    end
 
-    if outfile && !stream_output
-      output = doc.convert 'outfile' => outfile, 'outdir' => outdir
-    else
-      output = doc.convert
-    end
+      if outfile
+        doc.write output, outfile
 
-    if outfile
-      doc.write output, outfile
-
-      # NOTE document cannot control this behavior if safe >= SafeMode::SERVER
-      # NOTE skip if stylesdir is a URI
-      if !stream_output && doc.safe < SafeMode::SECURE && (doc.attr? 'linkcss') && (doc.attr? 'copycss') &&
-          (doc.basebackend? 'html') && !((stylesdir = (doc.attr 'stylesdir')) && (Helpers.uriish? stylesdir))
-        if (stylesheet = doc.attr 'stylesheet')
-          if DEFAULT_STYLESHEET_KEYS.include? stylesheet
-            copy_asciidoctor_stylesheet = true
-          elsif !(Helpers.uriish? stylesheet)
-            copy_user_stylesheet = true
+        # NOTE document cannot control this behavior if safe >= SafeMode::SERVER
+        # NOTE skip if stylesdir is a URI
+        if !stream_output && doc.safe < SafeMode::SECURE && (doc.attr? 'linkcss') && (doc.attr? 'copycss') &&
+            (doc.basebackend? 'html') && !((stylesdir = (doc.attr 'stylesdir')) && (Helpers.uriish? stylesdir))
+          if (stylesheet = doc.attr 'stylesheet')
+            if DEFAULT_STYLESHEET_KEYS.include? stylesheet
+              copy_asciidoctor_stylesheet = true
+            elsif !(Helpers.uriish? stylesheet)
+              copy_user_stylesheet = true
+            end
           end
-        end
-        copy_syntax_hl_stylesheet = (syntax_hl = doc.syntax_highlighter) && (syntax_hl.write_stylesheet? doc)
-        if copy_asciidoctor_stylesheet || copy_user_stylesheet || copy_syntax_hl_stylesheet
-          stylesoutdir = doc.normalize_system_path(stylesdir, outdir, doc.safe >= SafeMode::SAFE ? outdir : nil)
-          if mkdirs
-            Helpers.mkdir_p stylesoutdir
-          else
-            raise ::IOError, %(target stylesheet directory does not exist: #{stylesoutdir} (hint: set :mkdirs option)) unless ::File.directory? stylesoutdir
-          end
-
-          if copy_asciidoctor_stylesheet
-            Stylesheets.instance.write_primary_stylesheet stylesoutdir
-          # FIXME should Stylesheets also handle the user stylesheet?
-          elsif copy_user_stylesheet
-            if (stylesheet_src = doc.attr 'copycss').empty?
-              stylesheet_src = doc.normalize_system_path stylesheet
+          copy_syntax_hl_stylesheet = (syntax_hl = doc.syntax_highlighter) && (syntax_hl.write_stylesheet? doc)
+          if copy_asciidoctor_stylesheet || copy_user_stylesheet || copy_syntax_hl_stylesheet
+            stylesoutdir = doc.normalize_system_path(stylesdir, outdir, doc.safe >= SafeMode::SAFE ? outdir : nil)
+            if mkdirs
+              Helpers.mkdir_p stylesoutdir
             else
-              # NOTE in this case, copycss is a source location (but cannot be a URI)
-              stylesheet_src = doc.normalize_system_path stylesheet_src
+              raise ::IOError, %(target stylesheet directory does not exist: #{stylesoutdir} (hint: set :mkdirs option)) unless ::File.directory? stylesoutdir
             end
-            stylesheet_dest = doc.normalize_system_path stylesheet, stylesoutdir, (doc.safe >= SafeMode::SAFE ? outdir : nil)
-            # NOTE don't warn if src can't be read and dest already exists (see #2323)
-            if stylesheet_src != stylesheet_dest && (stylesheet_data = doc.read_asset stylesheet_src,
-                warn_on_failure: !(::File.file? stylesheet_dest), label: 'stylesheet')
-              ::File.write stylesheet_dest, stylesheet_data, mode: FILE_WRITE_MODE
+
+            if copy_asciidoctor_stylesheet
+              Stylesheets.instance.write_primary_stylesheet stylesoutdir
+            # FIXME should Stylesheets also handle the user stylesheet?
+            elsif copy_user_stylesheet
+              if (stylesheet_src = doc.attr 'copycss') == '' || stylesheet_src == true
+                stylesheet_src = doc.normalize_system_path stylesheet
+              else
+                # NOTE in this case, copycss is a source location (but cannot be a URI)
+                stylesheet_src = doc.normalize_system_path stylesheet_src.to_s
+              end
+              stylesheet_dest = doc.normalize_system_path stylesheet, stylesoutdir, (doc.safe >= SafeMode::SAFE ? outdir : nil)
+              # NOTE don't warn if src can't be read and dest already exists (see #2323)
+              if stylesheet_src != stylesheet_dest && (stylesheet_data = doc.read_asset stylesheet_src,
+                  warn_on_failure: !(::File.file? stylesheet_dest), label: 'stylesheet')
+                if (stylesheet_outdir = ::File.dirname stylesheet_dest) != stylesoutdir && !(::File.directory? stylesheet_outdir)
+                  if mkdirs
+                    Helpers.mkdir_p stylesheet_outdir
+                  else
+                    raise ::IOError, %(target stylesheet directory does not exist: #{stylesheet_outdir} (hint: set :mkdirs option))
+                  end
+                end
+                ::File.write stylesheet_dest, stylesheet_data, mode: FILE_WRITE_MODE
+              end
             end
+            syntax_hl.write_stylesheet doc, stylesoutdir if copy_syntax_hl_stylesheet
           end
-          syntax_hl.write_stylesheet doc, stylesoutdir if copy_syntax_hl_stylesheet
         end
+        doc
+      else
+        output
       end
-      doc
-    else
-      output
     end
-  end
 
-  # Public: Parse the contents of the AsciiDoc source file into an
-  # Asciidoctor::Document and convert it to the specified backend format.
-  #
-  # input   - the String AsciiDoc source filename
-  # options - a String, Array or Hash of options to control processing (default: {})
-  #           String and Array values are converted into a Hash.
-  #           See Asciidoctor::Document#initialize for details about options.
-  #
-  # Returns the Document object if the converted String is written to a
-  # file, otherwise the converted String
-  def convert_file filename, options = {}
-    ::File.open(filename, FILE_READ_MODE) {|file| convert file, options }
-  end
+    # Public: Parse the contents of the AsciiDoc source file into an
+    # Asciidoctor::Document and convert it to the specified backend format.
+    #
+    # input   - the String AsciiDoc source filename
+    # options - a String, Array or Hash of options to control processing (default: {})
+    #           String and Array values are converted into a Hash.
+    #           See Asciidoctor::Document#initialize for details about options.
+    #
+    # Returns the Document object if the converted String is written to a
+    # file, otherwise the converted String
+    def convert_file filename, options = {}
+      ::File.open(filename, FILE_READ_MODE) {|file| convert file, options }
+    end
 
-  # Deprecated: Use {Asciidoctor.convert} instead.
-  alias render convert
-  module_function :render
+    # Deprecated: Use {Asciidoctor.convert} instead.
+    alias render convert
 
-  # Deprecated: Use {Asciidoctor.convert_file} instead.
-  alias render_file convert_file
-  module_function :render_file
+    # Deprecated: Use {Asciidoctor.convert_file} instead.
+    alias render_file convert_file
+  end
 end