Function props

server/webdav/prop.go:176–222

TODO(nigeltao) merge props and allprop? Props returns the status of the properties named pnames for resource name. Each Propstat has a unique status and each property name will only be part of one Propstat element.

(ctx context.Context, ls LockSystem, fi model.Obj, pnames []xml.Name)

// Each Propstat has a unique status and each property name will only be part
// of one Propstat element.
func props(ctx context.Context, ls LockSystem, fi model.Obj, pnames []xml.Name) ([]Propstat, error) {
	//f, err := fs.OpenFile(ctx, name, os.O_RDONLY, 0)
	//if err != nil {
	//	return nil, err
	//}
	//defer f.Close()
	//fi, err := f.Stat()
	//if err != nil {
	//	return nil, err
	//}
	isDir := fi.IsDir()

	var deadProps map[xml.Name]Property
	// ??? what is this for?
	//if dph, ok := f.(DeadPropsHolder); ok {
	//	deadProps, err = dph.DeadProps()
	//	if err != nil {
	//		return nil, err
	//	}
	//}

	pstatOK := Propstat{Status: http.StatusOK}
	pstatNotFound := Propstat{Status: http.StatusNotFound}
	for _, pn := range pnames {
		// If this file has dead properties, check if they contain pn.
		if dp, ok := deadProps[pn]; ok {
			pstatOK.Props = append(pstatOK.Props, dp)
			continue
		}
		// Otherwise, it must either be a live property or we don't know it.
		if prop := liveProps[pn]; prop.findFn != nil && (prop.dir || !isDir) {
			innerXML, err := prop.findFn(ctx, ls, fi.GetName(), fi)
			if err != nil {
				return nil, err
			}
			pstatOK.Props = append(pstatOK.Props, Property{
				XMLName:  pn,
				InnerXML: []byte(innerXML),
			})
		} else {
			pstatNotFound.Props = append(pstatNotFound.Props, Property{
				XMLName: pn,
			})
		}
	}
	return makePropstats(pstatOK, pstatNotFound), nil
}

// Propnames returns the property names defined for resource name.
func propnames(ctx context.Context, ls LockSystem, fi model.Obj) ([]xml.Name, error) {