webdav: add Client.Stat

client.go

@@ -3,12 +3,15 @@ package webdav
 import (
 	"fmt"
 	"net/http"
+	"os"
+	"path"
+	"time"
 
 	"github.com/emersion/go-webdav/internal"
 )
 
 type Client struct {
-	c *internal.Client
+	ic *internal.Client
 }
 
 func NewClient(c *http.Client, endpoint string) (*Client, error) {
@@ -20,13 +23,13 @@ func NewClient(c *http.Client, endpoint string) (*Client, error) {
 }
 
 func (c *Client) SetBasicAuth(username, password string) {
-	c.c.SetBasicAuth(username, password)
+	c.ic.SetBasicAuth(username, password)
 }
 
 func (c *Client) FindCurrentUserPrincipal() (string, error) {
 	propfind := internal.NewPropNamePropfind(internal.CurrentUserPrincipalName)
 
-	resp, err := c.c.PropfindFlat("/", propfind)
+	resp, err := c.ic.PropfindFlat("/", propfind)
 	if err != nil {
 		return "", err
 	}
@@ -41,3 +44,73 @@ func (c *Client) FindCurrentUserPrincipal() (string, error) {
 
 	return prop.Href, nil
 }
+
+type fileInfo struct {
+	filename string
+	size     int64
+	modTime  time.Time
+	isDir    bool
+}
+
+func (fi *fileInfo) Name() string {
+	return fi.filename
+}
+
+func (fi *fileInfo) Size() int64 {
+	return fi.size
+}
+
+func (fi *fileInfo) Mode() os.FileMode {
+	if fi.isDir {
+		return os.ModePerm | os.ModeDir
+	} else {
+		return os.ModePerm
+	}
+}
+
+func (fi *fileInfo) ModTime() time.Time {
+	return fi.modTime
+}
+
+func (fi *fileInfo) IsDir() bool {
+	return fi.isDir
+}
+
+func (fi *fileInfo) Sys() interface{} {
+	return nil
+}
+
+func (c *Client) Stat(name string) (os.FileInfo, error) {
+	// TODO: getetag, getcontenttype
+	propfind := internal.NewPropNamePropfind(
+		internal.ResourceTypeName,
+		internal.GetContentLengthName,
+		internal.GetLastModifiedName,
+	)
+	resp, err := c.ic.PropfindFlat(name, propfind)
+	if err != nil {
+		return nil, err
+	}
+
+	filename, _ := path.Split(name)
+	fi := &fileInfo{filename: filename}
+
+	var resType internal.ResourceType
+	if err := resp.DecodeProp(&resType); err != nil {
+		return nil, err
+	}
+	if resType.Is(internal.CollectionName) {
+		fi.isDir = true
+	} else {
+		var getLen internal.GetContentLength
+		var getMod internal.GetLastModified
+		if err := resp.DecodeProp(&getLen, &getMod); err != nil {
+			return nil, err
+		}
+
+		fi.size = getLen.Length
+		fi.modTime = time.Time(getMod.LastModified)
+	}
+
+	return fi, nil
+}