This adds a context.Context parameter to NewFs and related calls.
This is necessary as part of reading config from the context -
backends need to be able to read the global config.
This includes a new directory listing template which was originally
from the Caddy project (used with permission and copyright attribution).
This is used whenever we serve directory listings so `rclone serve
http`, `rclone serve webdav` and `rclone rcd --rc-serve`
This also modifies the tests so they work with the original template which
is easier to debug.
- Change rclone/fs interfaces to accept context.Context
- Update interface implementations to use context.Context
- Change top level usage to propagate context to lover level functions
Context propagation is needed for stopping transfers and passing other
request-scoped values.
Before this change x/net/webdav would open each file to find out its
Content-Type.
Now we override the FileInfo and provide that directly from rclone.
An --etag-hash has also been implemented to override the ETag with the
hash passed in.
Fixes#2273
The purpose of this is to make it easier to maintain and eventually to
allow the rclone backends to be re-used in other projects without
having to use the rclone configuration system.
The new code layout is documented in CONTRIBUTING.
