resources: Move resource interfaces into its own package

resources/resource_factories/create/create.go

@@ -0,0 +1,65 @@
+// Copyright 2019 The Hugo Authors. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package create contains functions for to create Resource objects. This will
+// typically non-files.
+package create
+
+import (
+	"path/filepath"
+
+	"github.com/spf13/afero"
+
+	"github.com/gohugoio/hugo/common/hugio"
+	"github.com/gohugoio/hugo/resources"
+	"github.com/gohugoio/hugo/resources/resource"
+)
+
+// Client contains methods to create Resource objects.
+// tasks to Resource objects.
+type Client struct {
+	rs *resources.Spec
+}
+
+// New creates a new Client with the given specification.
+func New(rs *resources.Spec) *Client {
+	return &Client{rs: rs}
+}
+
+// Get creates a new Resource by opening the given filename in the given filesystem.
+func (c *Client) Get(fs afero.Fs, filename string) (resource.Resource, error) {
+	filename = filepath.Clean(filename)
+	return c.rs.ResourceCache.GetOrCreate(resources.ResourceKeyPartition(filename), filename, func() (resource.Resource, error) {
+		return c.rs.NewForFs(fs,
+			resources.ResourceSourceDescriptor{
+				LazyPublish:    true,
+				SourceFilename: filename})
+	})
+
+}
+
+// FromString creates a new Resource from a string with the given relative target path.
+func (c *Client) FromString(targetPath, content string) (resource.Resource, error) {
+	return c.rs.ResourceCache.GetOrCreate(resources.CACHE_OTHER, targetPath, func() (resource.Resource, error) {
+		return c.rs.NewForFs(
+			c.rs.FileCaches.AssetsCache().Fs,
+			resources.ResourceSourceDescriptor{
+				LazyPublish: true,
+				OpenReadSeekCloser: func() (hugio.ReadSeekCloser, error) {
+					return hugio.NewReadSeekerNoOpCloserFromString(content), nil
+				},
+				RelTargetFilename: filepath.Clean(targetPath)})
+
+	})
+
+}