From 06ecc6511b07924303f081928167d7fb67841215 Mon Sep 17 00:00:00 2001
From: Nick Craig-Wood <nick@craig-wood.com>
Date: Tue, 22 Feb 2022 16:38:46 +0000
Subject: [PATCH] drive: when using a link type --drive-export-formats show all
 doc types

Before this change we always hid unexportable document types (eg
Google maps).

After this change, if using --drive-export-formats
url/desktop/link.html/webloc we will show links for all documents
regardless of whether they are exportable or not as the links to them
work regardless of whether they are exportable or not.

See: https://forum.rclone.org/t/rclone-mount-for-google-drive-does-not-show-as-web-links-the-google-documents-of-the-google-my-map-gmap-type/29415
---
 backend/drive/drive.go | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/backend/drive/drive.go b/backend/drive/drive.go
index 18e29d251..1ff28a434 100644
--- a/backend/drive/drive.go
+++ b/backend/drive/drive.go
@@ -1597,6 +1597,15 @@ func (f *Fs) findExportFormatByMimeType(ctx context.Context, itemMimeType string
 		}
 	}
 
+	// If using a link type export and a more specific export
+	// hasn't been found all docs should be exported
+	for _, _extension := range f.exportExtensions {
+		_mimeType := mime.TypeByExtension(_extension)
+		if isLinkMimeType(_mimeType) {
+			return _extension, _mimeType, true
+		}
+	}
+
 	// else return empty
 	return "", "", isDocument
 }
@@ -1607,6 +1616,14 @@ func (f *Fs) findExportFormatByMimeType(ctx context.Context, itemMimeType string
 // Look through the exportExtensions and find the first format that can be
 // converted.  If none found then return ("", "", "", false)
 func (f *Fs) findExportFormat(ctx context.Context, item *drive.File) (extension, filename, mimeType string, isDocument bool) {
+	// If item has MD5 sum it is a file stored on drive
+	if item.Md5Checksum != "" {
+		return
+	}
+	// Folders can't be documents
+	if item.MimeType == driveFolderType {
+		return
+	}
 	extension, mimeType, isDocument = f.findExportFormatByMimeType(ctx, item.MimeType)
 	if extension != "" {
 		filename = item.Name + extension