remove duplicated code and make the forget function compatible with the new docker mounts options

src/backup.ts

@@ -15,7 +15,8 @@ import {
 	MeasureDuration,
 	fill,
 	decodeLocationFromPrefix,
-	hash, checkIfDockerVolumeExistsOrFail,
+	checkIfDockerVolumeExistsOrFail,
+	getPathFromVolume,
 } from './utils'
 
 
@@ -33,7 +34,7 @@ export const backupFromFilesystem = (from: string, location: Location, backend:
 }
 
 export const backupFromVolume = (volume: string, location: Location, backend: Backend) => {
-	const tmp = pathRelativeToConfigFile(hash(volume))
+	const tmp = getPathFromVolume(volume)
 	try {
 		mkdirSync(tmp)
 		checkIfDockerVolumeExistsOrFail(volume)

src/forget.ts

@@ -2,6 +2,7 @@ import { Writer } from 'clitastic'
 
 import { config, VERBOSE } from './autorestic'
 import { getEnvFromBackend } from './backend'
+import { LocationFromPrefixes } from './config'
 import { Locations, Location, Flags } from './types'
 import {
 	exec,
@@ -9,7 +10,7 @@ import {
 	pathRelativeToConfigFile,
 	getFlagsFromLocation,
 	makeArrayIfIsNot,
-	fill,
+	fill, decodeLocationFromPrefix, getPathFromVolume,
 } from './utils'
 
 
@@ -20,9 +21,19 @@ export const forgetSingle = (name: string, to: string, location: Location, dryRu
 	const writer = new Writer(base + 'Removing old snapshots… ⏳')
 
 	const backend = config.backends[to]
-	const path = pathRelativeToConfigFile(location.from)
 	const flags = getFlagsFromLocation(location, 'forget')
 
+	const [type, value] = decodeLocationFromPrefix(location.from)
+	let path: string
+	switch (type) {
+		case LocationFromPrefixes.Filesystem:
+			path = pathRelativeToConfigFile(value)
+			break
+		case LocationFromPrefixes.DockerVolume:
+			path = getPathFromVolume(value)
+			break
+	}
+
 	if (flags.length == 0) {
 		writer.done(base + 'Skipping, no policy declared')
 		return

src/restore.ts

@@ -9,9 +9,9 @@ import {
 	checkIfDockerVolumeExistsOrFail,
 	ConfigError,
 	decodeLocationFromPrefix,
-	exec, execPlain,
-	hash,
-	pathRelativeToConfigFile,
+	exec,
+	execPlain,
+	getPathFromVolume,
 } from './utils'
 
 
@@ -25,8 +25,7 @@ export const restoreToFilesystem = (from: string, to: string, backend: Backend)
 }
 
 export const restoreToVolume = (volume: string, backend: Backend) => {
-	const tmp = pathRelativeToConfigFile(hash(volume))
-
+	const tmp = getPathFromVolume(volume)
 	try {
 		restoreToFilesystem(tmp, tmp, backend)
 		try {

src/utils.ts

@@ -188,6 +188,8 @@ export const decodeLocationFromPrefix = (from: string): [LocationFromPrefixes, s
 
 export const hash = (plain: string): string => createHash('sha1').update(plain).digest().toString('hex')
 
+export const getPathFromVolume = (volume: string) => pathRelativeToConfigFile(hash(volume))
+
 export const checkIfDockerVolumeExistsOrFail = (volume: string) => {
 	const cmd = exec('docker', [
 		'volume', 'inspect', volume,
@@ -195,3 +197,4 @@ export const checkIfDockerVolumeExistsOrFail = (volume: string) => {
 	if (cmd.err.length > 0)
 		throw new Error('Volume not found')
 }
+