fix: 修复dde-open识别不了空文件的问题

当识别到空文件, 在尝试调用gio的guess方法通过文件名来识别MIME类型,如果还是识别不出来,默认使用text/plain

Log: dde-open增强文件识别
Influence: MIME

Author: fly602

dde-open/main.go

@@ -196,6 +196,22 @@ func openFile(filename string) error {
 	if contentType == "" {
 		return errors.New("failed to get file content type")
 	}
+	logger.Debugf("content type: %q", contentType)
+
+	// 处理空文件的情况，根据文件扩展名猜测 content type
+	if contentType == "application/x-zerosize" {
+		uncerten, guessedType := gio.ContentTypeGuess(filename, nil)
+		// 不确定，使用默认本文打开
+		if uncerten || guessedType == "" {
+			contentType = "text/plain"
+		} else if guessedType == "application/x-zerosize" {
+			contentType = "text/plain"
+		} else {
+			logger.Debugf("empty file detected, guessed content type: %q", guessedType)
+			contentType = guessedType
+
+		}
+	}
 
 	appInfo := gio.AppInfoGetDefaultForType(contentType, false)
 	if appInfo == nil {

go.mod

@@ -7,9 +7,9 @@ require (
 	github.com/fogleman/gg v1.3.0
 	github.com/godbus/dbus/v5 v5.1.0
 	github.com/gosexy/gettext v0.0.0-20160830220431-74466a0a0c4a
-	github.com/linuxdeepin/go-dbus-factory v0.0.0-20250808013927-6368d3237cee
-	github.com/linuxdeepin/go-gir v0.0.0-20250812023606-b28aaee32ac9
-	github.com/linuxdeepin/go-lib v0.0.0-20250812091504-ef74b917a73a
+	github.com/linuxdeepin/go-dbus-factory v0.0.0-20251106065250-e58866b2c218
+	github.com/linuxdeepin/go-gir v0.0.0-20251127080441-d9c47dbb6da4
+	github.com/linuxdeepin/go-lib v0.0.0-20251106065207-1fdf101312e6
 	github.com/linuxdeepin/go-x11-client v0.0.0-20230131052004-7503e2337ee1
 	github.com/nfnt/resize v0.0.0-20180221191011-83c6a9932646
 	github.com/stretchr/testify v1.8.1

go.sum

@@ -27,12 +27,13 @@ github.com/kr/pretty v0.2.1/go.mod h1:ipq/a2n7PKx3OHsz4KJII5eveXtPO4qwEXGdVfWzfn
 github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
 github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
 github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
-github.com/linuxdeepin/go-dbus-factory v0.0.0-20250808013927-6368d3237cee h1:466thkbIB3la2qlZI/g4Jv4LypN52iFFLGcG+0F2aqM=
-github.com/linuxdeepin/go-dbus-factory v0.0.0-20250808013927-6368d3237cee/go.mod h1:iIlTR50SA8MJ9ORPyMOpKWMF4g+AUorbER5AX0RD9Jk=
-github.com/linuxdeepin/go-gir v0.0.0-20250812023606-b28aaee32ac9 h1:H95pXIA104lsylGPXXPm8rM+6vVsmKff7sJGGgWMu5A=
+github.com/linuxdeepin/go-dbus-factory v0.0.0-20251106065250-e58866b2c218 h1:bifQcTysGUacNXM5PK9IWDPCG8Jb/+JzKwy3w8APYq0=
+github.com/linuxdeepin/go-dbus-factory v0.0.0-20251106065250-e58866b2c218/go.mod h1:dfpixHkqiijg3P7w5QArkMyC7+vlHcutN5R6zHIn8is=
 github.com/linuxdeepin/go-gir v0.0.0-20250812023606-b28aaee32ac9/go.mod h1:a0tox5vepTQu5iO6rdKc4diGT+fkyXZlRROM8ULEvaI=
-github.com/linuxdeepin/go-lib v0.0.0-20250812091504-ef74b917a73a h1:G4wz/sQIg/rd6aJ82Sg4IfKMn/2HV5V2Ia0KS7o6Xhs=
-github.com/linuxdeepin/go-lib v0.0.0-20250812091504-ef74b917a73a/go.mod h1:2d0hhhqpr9UP9DRgnzU4y6nwdgUtM0qV94Wf0bzAI2g=
+github.com/linuxdeepin/go-gir v0.0.0-20251127080441-d9c47dbb6da4 h1:CsW+3eOerOSANbQWEXOWNqJuzl7/W9QIJu9wHvB0g/I=
+github.com/linuxdeepin/go-gir v0.0.0-20251127080441-d9c47dbb6da4/go.mod h1:a0tox5vepTQu5iO6rdKc4diGT+fkyXZlRROM8ULEvaI=
+github.com/linuxdeepin/go-lib v0.0.0-20251106065207-1fdf101312e6 h1:ntYWER7pULMpTQykPiENOGh7pxSPCspV3Ql8mZA+IBc=
+github.com/linuxdeepin/go-lib v0.0.0-20251106065207-1fdf101312e6/go.mod h1:2d0hhhqpr9UP9DRgnzU4y6nwdgUtM0qV94Wf0bzAI2g=
 github.com/linuxdeepin/go-x11-client v0.0.0-20220830090948-78fe92b727bb/go.mod h1:KwpmRZ47A/0a2l9V0V6aTlkuNaqy5j1fOqMFJONuIMY=
 github.com/linuxdeepin/go-x11-client v0.0.0-20230131052004-7503e2337ee1 h1:UZo2ftrgFtf5O4jtG0dJ+i/AeFy8LXjNewBRDhwzFxA=
 github.com/linuxdeepin/go-x11-client v0.0.0-20230131052004-7503e2337ee1/go.mod h1:KwpmRZ47A/0a2l9V0V6aTlkuNaqy5j1fOqMFJONuIMY=