rclone/cmd/about/about.go
edwardxml 19a8b66cee
docs: update rclone about docs
Create a full loop of documentation for rclone about, backends overview
and individual backend pages.

Discussion:
https://github.com/rclone/rclone/pull/4774 relates

Previously pull was requested, in part, under ref
https://github.com/rclone/rclone/pull/4801

Notes:
Introduce a tentative draft see-link format the end of sections to try
rather than lots of in-para links.

Update about.go incl link to list of backends not supporting about.

In list of backends not supporting about, include link to about command
reference.

I appreciate there may be decisions to make going forward about whether
command links should be code formatted, and using proper pretty url
links, but I have fudged that for now.

Update backend pages that do not support about with wording used
previously for ftp - it is in passive voice but I can live with it. (my
own wording and fault). The note is applied to a limitations section. If
one does not already exist it is created (even if there are other
limitations with their own sections)
2020-11-27 14:08:52 +00:00

121 lines
3 KiB
Go

package about
import (
"context"
"encoding/json"
"fmt"
"os"
"github.com/pkg/errors"
"github.com/rclone/rclone/cmd"
"github.com/rclone/rclone/fs"
"github.com/rclone/rclone/fs/config/flags"
"github.com/spf13/cobra"
)
var (
jsonOutput bool
fullOutput bool
)
func init() {
cmd.Root.AddCommand(commandDefinition)
cmdFlags := commandDefinition.Flags()
flags.BoolVarP(cmdFlags, &jsonOutput, "json", "", false, "Format output as JSON")
flags.BoolVarP(cmdFlags, &fullOutput, "full", "", false, "Full numbers instead of SI units")
}
// printValue formats uv to be output
func printValue(what string, uv *int64) {
what += ":"
if uv == nil {
return
}
var val string
if fullOutput {
val = fmt.Sprintf("%d", *uv)
} else {
val = fs.SizeSuffix(*uv).String()
}
fmt.Printf("%-9s%v\n", what, val)
}
var commandDefinition = &cobra.Command{
Use: "about remote:",
Short: `Get quota information from the remote.`,
Long: `
` + "`rclone about`" + `prints quota information about a remote to standard
output. The output is typically used, free, quota and trash contents.
E.g. Typical output from` + "`rclone about remote:`" + `is:
Total: 17G
Used: 7.444G
Free: 1.315G
Trashed: 100.000M
Other: 8.241G
Where the fields are:
* Total: total size available.
* Used: total size used
* Free: total space available to this user.
* Trashed: total space used by trash
* Other: total amount in other storage (e.g. Gmail, Google Photos)
* Objects: total number of objects in the storage
Not all backends print all fields. Information is not included if it is not
provided by a backend. Where the value is unlimited it is omitted.
Applying a ` + "`--full`" + ` flag to the command prints the bytes in full, e.g.
Total: 18253611008
Used: 7993453766
Free: 1411001220
Trashed: 104857602
Other: 8849156022
A ` + "`--json`" + `flag generates conveniently computer readable output, e.g.
{
"total": 18253611008,
"used": 7993453766,
"trashed": 104857602,
"other": 8849156022,
"free": 1411001220
}
Not all backends support the ` + "`rclone about`" + ` command.
See [List of backends that do not support about](https://rclone.org/overview/#optional-features)
`,
Run: func(command *cobra.Command, args []string) {
cmd.CheckArgs(1, 1, command, args)
f := cmd.NewFsSrc(args)
cmd.Run(false, false, command, func() error {
doAbout := f.Features().About
if doAbout == nil {
return errors.Errorf("%v doesn't support about", f)
}
u, err := doAbout(context.Background())
if err != nil {
return errors.Wrap(err, "About call failed")
}
if u == nil {
return errors.New("nil usage returned")
}
if jsonOutput {
out := json.NewEncoder(os.Stdout)
out.SetIndent("", "\t")
return out.Encode(u)
}
printValue("Total", u.Total)
printValue("Used", u.Used)
printValue("Free", u.Free)
printValue("Trashed", u.Trashed)
printValue("Other", u.Other)
printValue("Objects", u.Objects)
return nil
})
},
}