implement install and uninstall operations - close #82

add "prefix" construction variable - close #99
add InstallDirectory builder - close #100

lib/rscons/builders/copy.rb

@@ -0,0 +1,60 @@
+require "pathname"
+
+module Rscons
+  module Builders
+    # The Copy builder copies files/directories to new locations.
+    class Copy < Builder
+
+      # Run the builder to produce a build target.
+      def run(options)
+        install_builder = self.class.name == "Install"
+        if (not install_builder) or Rscons.application.operation("install")
+          target_is_dir = (@sources.length > 1) ||
+                          Dir.exists?(@sources.first) ||
+                          Dir.exists?(@target)
+          outdir = target_is_dir ? @target : File.dirname(@target)
+          # Collect the list of files to copy over.
+          file_map = {}
+          if target_is_dir
+            @sources.each do |src|
+              if Dir.exists? src
+                Dir.glob("#{src}/**/*", File::FNM_DOTMATCH).select do |f|
+                  File.file?(f)
+                end.each do |subfile|
+                  subpath = Pathname.new(subfile).relative_path_from(Pathname.new(src)).to_s
+                  file_map[subfile] = "#{outdir}/#{subpath}"
+                end
+              else
+                file_map[src] = "#{outdir}/#{File.basename(src)}"
+              end
+            end
+          else
+            file_map[sources.first] = target
+          end
+          printed_message = false
+          file_map.each do |src, dest|
+            # Check the cache and copy if necessary
+            unless @cache.up_to_date?(dest, :Copy, [src], @env)
+              unless printed_message
+                message = "#{name} #{Util.short_format_paths(@sources)} => #{@target}"
+                print_run_message(message, nil)
+                printed_message = true
+              end
+              @cache.mkdir_p(File.dirname(dest), install: install_builder)
+              FileUtils.cp(src, dest, :preserve => true)
+            end
+            @cache.register_build(dest, :Copy, [src], @env, install: install_builder)
+          end
+          (target_is_dir ? Dir.exists?(@target) : File.exists?(@target)) ? true : false
+        else
+          true
+        end
+      end
+
+    end
+
+    # The Install builder is identical to the Copy builder.
+    class Install < Copy; end
+
+  end
+end

lib/rscons/builders/directory.rb

@@ -1,22 +1,33 @@
 module Rscons
   module Builders
+
     # The Directory builder creates a directory.
     class Directory < Builder
 
       # Run the builder to produce a build target.
       def run(options)
-        if File.directory?(@target)
-          true
-        elsif File.exists?(@target)
-          Ansi.write($stderr, :red, "Error: `#{@target}' already exists and is not a directory", :reset, "\n")
-          false
+        install_builder = self.class.name == "InstallDirectory"
+        if (not install_builder) or Rscons.application.operation("install")
+          if File.directory?(@target)
+            true
+          elsif File.exists?(@target)
+            Ansi.write($stderr, :red, "Error: `#{@target}' already exists and is not a directory", :reset, "\n")
+            false
+          else
+            print_run_message("Creating directory => #{@target}", nil)
+            @cache.mkdir_p(@target, install: install_builder)
+            true
+          end
         else
-          print_run_message("Creating directory => #{@target}", nil)
-          @cache.mkdir_p(@target)
           true
         end
       end
 
     end
+
+    # The InstallDirectory class is identical to Directory but only performs
+    # an action for an "install" operation.
+    class InstallDirectory < Directory; end
+
   end
 end

lib/rscons/builders/install.rb

@@ -1,55 +0,0 @@
-require "pathname"
-
-module Rscons
-  module Builders
-    # The Install builder copies files/directories to new locations.
-    class Install < Builder
-
-      # Run the builder to produce a build target.
-      def run(options)
-        target_is_dir = (@sources.length > 1) ||
-                        Dir.exists?(@sources.first) ||
-                        Dir.exists?(@target)
-        outdir = target_is_dir ? @target : File.dirname(@target)
-        # Collect the list of files to copy over.
-        file_map = {}
-        if target_is_dir
-          @sources.each do |src|
-            if Dir.exists? src
-              Dir.glob("#{src}/**/*", File::FNM_DOTMATCH).select do |f|
-                File.file?(f)
-              end.each do |subfile|
-                subpath = Pathname.new(subfile).relative_path_from(Pathname.new(src)).to_s
-                file_map[subfile] = "#{outdir}/#{subpath}"
-              end
-            else
-              file_map[src] = "#{outdir}/#{File.basename(src)}"
-            end
-          end
-        else
-          file_map[sources.first] = target
-        end
-        printed_message = false
-        file_map.each do |src, dest|
-          # Check the cache and copy if necessary
-          unless @cache.up_to_date?(dest, :Copy, [src], @env)
-            unless printed_message
-              message = "#{name} #{Util.short_format_paths(@sources)} => #{@target}"
-              print_run_message(message, nil)
-              printed_message = true
-            end
-            @cache.mkdir_p(File.dirname(dest))
-            FileUtils.cp(src, dest, :preserve => true)
-          end
-          @cache.register_build(dest, :Copy, [src], @env)
-        end
-        (target_is_dir ? Dir.exists?(@target) : File.exists?(@target)) ? true : false
-      end
-
-    end
-
-    # The Copy builder is identical to the Install builder.
-    class Copy < Install; end
-
-  end
-end