Finish the first version of propfind.

rest/dav_model.go

@@ -1,3 +1,102 @@
 package rest
 
+import (
+	"encoding/xml"
+	"fmt"
+	"net/http"
+	"strconv"
+	"tank/rest/dav"
+)
 
+//访问前缀，这个是特殊入口
+var WEBDAV_PREFFIX = "/api/dav"
+
+//动态的文件属性
+type LiveProp struct {
+	findFn func(matter *Matter) string
+	dir    bool
+}
+
+//所有的动态属性定义及其值的获取方式
+var LivePropMap = map[xml.Name]LiveProp{
+	{Space: "DAV:", Local: "resourcetype"}: {
+		findFn: func(matter *Matter) string {
+			if matter.Dir {
+				return `<D:collection xmlns:D="DAV:"/>`
+			} else {
+				return ""
+			}
+		},
+		dir: true,
+	},
+	{Space: "DAV:", Local: "displayname"}: {
+		findFn: func(matter *Matter) string {
+			if dav.SlashClean(matter.Name) == "/" {
+				return ""
+			} else {
+				return dav.EscapeXML(matter.Name)
+			}
+		},
+		dir: true,
+	},
+	{Space: "DAV:", Local: "getcontentlength"}: {
+		findFn: func(matter *Matter) string {
+			return strconv.FormatInt(matter.Size, 10)
+		},
+		dir: false,
+	},
+	{Space: "DAV:", Local: "getlastmodified"}: {
+		findFn: func(matter *Matter) string {
+			return matter.UpdateTime.UTC().Format(http.TimeFormat)
+		},
+		// http://webdav.org/specs/rfc4918.html#PROPERTY_getlastmodified
+		// suggests that getlastmodified should only apply to GETable
+		// resources, and this package does not support GET on directories.
+		//
+		// Nonetheless, some WebDAV clients expect child directories to be
+		// sortable by getlastmodified date, so this value is true, not false.
+		// See golang.org/issue/15334.
+		dir: true,
+	},
+	{Space: "DAV:", Local: "creationdate"}: {
+		findFn: nil,
+		dir:    false,
+	},
+	{Space: "DAV:", Local: "getcontentlanguage"}: {
+		findFn: nil,
+		dir:    false,
+	},
+	{Space: "DAV:", Local: "getcontenttype"}: {
+		findFn: func(matter *Matter) string {
+			if matter.Dir {
+				return ""
+			} else {
+				return dav.EscapeXML(matter.Name)
+			}
+		},
+		dir: false,
+	},
+	{Space: "DAV:", Local: "getetag"}: {
+		findFn: func(matter *Matter) string {
+			return fmt.Sprintf(`"%x%x"`, matter.UpdateTime.UnixNano(), matter.Size)
+		},
+		// findETag implements ETag as the concatenated hex values of a file's
+		// modification time and size. This is not a reliable synchronization
+		// mechanism for directories, so we do not advertise getetag for DAV
+		// collections.
+		dir: false,
+	},
+	// TODO: The lockdiscovery property requires LockSystem to list the
+	// active locks on a resource.
+	{Space: "DAV:", Local: "lockdiscovery"}: {},
+	{Space: "DAV:", Local: "supportedlock"}: {
+		findFn: func(matter *Matter) string {
+			return `` +
+				`<D:lockentry xmlns:D="DAV:">` +
+				`<D:lockscope><D:exclusive/></D:lockscope>` +
+				`<D:locktype><D:write/></D:locktype>` +
+				`</D:lockentry>`
+		},
+		dir: true,
+	},
+}