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lib/couchrest/commands/generate.rb

@@ -0,0 +1,71 @@
+require 'fileutils'
+
+class CouchRest
+  module Commands
+    module Generate
+
+      def self.run(options)
+        directory    = options[:directory]
+        design_names = options[:trailing_args]
+
+        FileUtils.mkdir_p(directory)
+        filename = File.join(directory, "lib.js")
+        self.write(filename, <<-FUNC)
+        // Put global functions here.
+        // Include in your views with
+        //
+        //   //include-lib
+        FUNC
+
+        design_names.each do |design_name|
+          subdirectory = File.join(directory, design_name)
+          FileUtils.mkdir_p(subdirectory)
+          filename = File.join(subdirectory, "sample-map.js")
+          self.write(filename, <<-FUNC)
+          function(doc) {
+            // Keys is first letter of _id
+            emit(doc._id[0], doc);
+          }
+          FUNC
+
+          filename = File.join(subdirectory, "sample-reduce.js")
+          self.write(filename, <<-FUNC)
+          function(keys, values) {
+            // Count the number of keys starting with this letter
+            return values.length;
+          }
+          FUNC
+
+          filename = File.join(subdirectory, "lib.js")
+          self.write(filename, <<-FUNC)
+          // Put functions specific to '#{design_name}' here.
+          // Include in your views with
+          //
+          //   //include-lib
+          FUNC
+        end
+      end
+
+      def self.help
+        helpstring = <<-GEN
+
+        Usage: couchview generate directory design1 design2 design3 ...
+
+        Couchview will create directories and example views for the design documents you specify.
+
+        GEN
+        helpstring.gsub(/^        /, '')
+      end
+
+      def self.write(filename, contents)
+        puts "Writing #{filename}"
+        File.open(filename, "w") do |f|
+          # Remove leading spaces
+          contents.gsub!(/^        (  )?/, '')
+          f.write contents
+        end
+      end
+
+    end
+  end
+end

lib/couchrest/commands/push.rb

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+class CouchRest
+
+  module Commands
+
+    module Push
+
+      def self.run(options)
+        directory = options[:directory]
+        database  = options[:trailing_args].first
+        
+        fm      = CouchRest::FileManager.new(database)
+        fm.loud = options[:loud]
+        puts "Pushing views from directory #{directory} to database #{fm.db}"
+        fm.push_views(directory)
+      end
+
+      def self.help
+        helpstring = <<-GEN
+
+        == Pushing views with Couchview ==
+
+        Usage: couchview push directory dbname
+
+        Couchview expects a specific filesystem layout for your CouchDB views (see
+        example below). It also supports advanced features like inlining of library
+        code (so you can keep DRY) as well as avoiding unnecessary document
+        modification.
+
+        Couchview also solves a problem with CouchDB's view API, which only provides
+        access to the final reduce side of any views which have both a map and a
+        reduce function defined. The intermediate map results are often useful for
+        development and production. CouchDB is smart enough to reuse map indexes for
+        functions duplicated across views within the same design document.
+
+        For views with a reduce function defined, Couchview creates both a reduce view
+        and a map-only view, so that you can browse and query the map side as well as
+        the reduction, with no performance penalty.
+
+        == Example ==
+
+        couchview push foo-project/bar-views baz-database
+
+        This will push the views defined in foo-project/bar-views into a database
+        called baz-database. Couchview expects the views to be defined in files with
+        names like:
+
+        foo-project/bar-views/my-design/viewname-map.js
+        foo-project/bar-views/my-design/viewname-reduce.js
+        foo-project/bar-views/my-design/noreduce-map.js
+
+        Pushed to => http://localhost:5984/baz-database/_design/my-design
+
+        And the design document:
+        {
+          "views" : {
+            "viewname-map" : {
+              "map" : "### contents of view-name-map.js ###"
+            },
+            "viewname-reduce" : {
+              "map" : "### contents of view-name-map.js ###",
+              "reduce" : "### contents of view-name-reduce.js ###"
+            },
+            "noreduce-map" : {
+              "map" : "### contents of noreduce-map.js ###"
+            }
+          }
+        }
+
+        Couchview will create a design document for each subdirectory of the views
+        directory specified on the command line.
+
+        == Library Inlining ==
+
+        Couchview can optionally inline library code into your views so you only have
+        to maintain it in one place. It looks for any files named lib.* in your
+        design-doc directory (for doc specific libs) and in the parent views directory
+        (for project global libs). These libraries are only inserted into views which
+        include the text
+
+        //include-lib
+
+        or
+
+        #include-lib
+
+        Couchview is a result of scratching my own itch. I'd be happy to make it more
+        general, so please contact me at jchris@grabb.it if you'd like to see anything
+        added or changed.
+
+        GEN
+        helpstring.gsub(/^        /, '')
+      end
+
+    end
+
+
+  end
+
+end