Add contextFile

context.go

@@ -35,16 +35,20 @@ func (self *Context) CreateFileFromReader(sourcePath string, reader io.Reader) (
 		return nil, err
 	}
 
-	file := &rawFile{
+	rf := &rawFile{
 		relPath: sourcePath,
 		props:   make(map[string]FileProp),
 		modTime: time.Now(),
 		size:    int64(len(data)),
 		reader:  bytes.NewReader(data),
+	}
+
+	cf := &contextFile{
+		file:  rf,
 		index: self.index,
 	}
 
-	return file, nil
+	return cf, nil
 }
 
 // CreateFileFromAsset creates a new file instance from the provided file path.
@@ -65,16 +69,20 @@ func (self *Context) CreateFileFromAsset(sourcePath, dataPath string) (File, err
 		return nil, errors.New("assets must be files")
 	}
 
-	file := &rawFile{
+	rf := &rawFile{
 		relPath:  sourcePath,
 		props:    make(map[string]FileProp),
 		modTime:  info.ModTime(),
 		size:     info.Size(),
 		dataPath: dataPath,
+	}
+
+	cf := &contextFile{
+		file:  rf,
 		index: self.index,
 	}
 
-	return file, nil
+	return cf, nil
 }
 
 // DispatchFile causes the file to get passed to the next link in the chain.
@@ -90,7 +98,7 @@ func (self *Context) DispatchAndCacheFile(outputFile File, inputFiles ...File) {
 		self.goldsmith.cache.storeFile(self, outputFile, inputFiles)
 	}
 
-	self.filesOut <- outputFile
+	self.DispatchFile(outputFile)
 }
 
 // RetrieveCachedFile looks up file data (excluding the metadata), given an

context_file.go

@@ -0,0 +1,79 @@
+package goldsmith
+
+import (
+	"io"
+	"time"
+)
+
+type contextFile struct {
+	file  File
+	index int
+}
+
+func (self *contextFile) Path() string {
+	return self.file.Path()
+}
+
+func (self *contextFile) Dir() string {
+	return self.file.Dir()
+}
+
+func (self *contextFile) Name() string {
+	return self.file.Name()
+}
+
+func (self *contextFile) Ext() string {
+	return self.file.Ext()
+}
+
+func (self *contextFile) Rename(path string) error {
+	return self.file.Rename(path)
+}
+
+func (self *contextFile) Size() int64 {
+	return self.file.Size()
+}
+
+func (self *contextFile) ModTime() time.Time {
+	return self.file.ModTime()
+}
+
+func (self *contextFile) Read(data []byte) (int, error) {
+	return self.file.Read(data)
+}
+
+func (self *contextFile) WriteTo(writer io.Writer) (int64, error) {
+	return self.file.WriteTo(writer)
+}
+
+func (self *contextFile) Seek(offset int64, whence int) (int64, error) {
+	return self.file.Seek(offset, whence)
+}
+
+func (self *contextFile) GoString() string {
+	return self.file.GoString()
+}
+
+func (self *contextFile) SetProp(name string, value FileProp) {
+	self.file.SetProp(name, value)
+}
+
+func (self *contextFile) Prop(name string) (FileProp, bool) {
+	return self.file.Prop(name)
+}
+
+func (self *contextFile) PropOrDef(name string, valueDef FileProp) FileProp {
+	return self.file.PropOrDef(name, valueDef)
+}
+
+func (self *contextFile) Props() FileProps {
+	return self.file.Props()
+}
+
+func (self *contextFile) CopyProps(file File) {
+	self.file.CopyProps(file)
+}
+
+func (self *contextFile) RemoveProp(name string) {
+	self.file.RemoveProp(name)
+}

filter_util.go

@@ -8,8 +8,10 @@ type filterEntry struct {
 type filterStack []filterEntry
 
 func (self *filterStack) accept(file File) bool {
+	cf := file.(*contextFile)
+
 	for _, entry := range *self {
-		if entry.index >= file.Index() && !entry.filter.Accept(file) {
+		if entry.index >= cf.index && !entry.filter.Accept(file) {
 			return false
 		}
 	}

interface.go

@@ -62,5 +62,4 @@ type File interface {
 	RemoveProp(name string)
 
 	GoString() string
-	Index() int
 }

raw_file.go

@@ -17,8 +17,6 @@ type rawFile struct {
 
 	dataPath string
 	reader   *bytes.Reader
-
-	index int
 }
 
 func (self *rawFile) Path() string {
@@ -117,10 +115,6 @@ func (self *rawFile) RemoveProp(name string) {
 	delete(self.props, name)
 }
 
-func (self *rawFile) Index() int {
-	return self.index
-}
-
 func (self *rawFile) load() error {
 	if self.reader != nil {
 		return nil