added borg extract functionality

.gitignore

@@ -1,2 +1,3 @@
 bin
 *.toml
+test

norg/borg/borg.nim

@@ -47,8 +47,8 @@ proc backupSources(nc: NorgConfig, repo: Repository): int =
   let archivename = repo.path & "::" & genArchiveName()
   let res = run genCommand(cmd = "create", repo = archivename, others = others)
   let end_time = now()
-  let elapsed = (end_time - start_time)
-  let total = elapsed.inMilliSeconds()
+  let total = (end_time - start_time).inMilliSeconds()
+  case res
   of 0:
     notify(nc.notifiers, state=Success, runtime=total)
   of 1:
@@ -62,7 +62,6 @@ proc listArchives(nc: NorgConfig, repo: Repository): int =
 
 proc mountArchive(nc: NorgConfig, repo: Repository): int =
   let archive = repo.path & "::" & nc.args.others[0]
-  echo archive
   let others = nc.args.others[1..^1]
   let ok = runDiscard genCommand(cmd = "mount", repo = archive, others = others)
   if ok == 0:
@@ -70,7 +69,6 @@ proc mountArchive(nc: NorgConfig, repo: Repository): int =
   else:
     echo "Failed to mount ", archive
 
-
 proc unmountArchive(nc: NorgConfig): int =
   let ok = runDiscard genCommand(cmd = "umount", repo = "", others = nc.args.others)
   if ok == 0:
@@ -78,6 +76,26 @@ proc unmountArchive(nc: NorgConfig): int =
   else:
     echo "Failed to unmount ", nc.args.others[0]
 
+proc isEmpty(dir: string): bool =
+  var count = 0
+  for idx, f in walkDir(dir): return false
+  #count += 1
+  return count == 0
+
+proc extractArchive(nc: NorgConfig, repo: Repository): int =
+  let archive = repo.path & "::" & nc.args.others[0]
+  var others = nc.args.others[1..^1]
+  if nc.args.extract_destination != "":
+    discard existsOrCreateDir(nc.args.extract_destination)
+    setCurrentDir(nc.args.extract_destination)
+  let dir = getCurrentDir()
+  if dir.isEmpty():
+    echo "Restoring..."
+    let ok = run(genCommand(cmd = "extract", repo = archive, others = others))
+    return ok
+  else:
+    echo "Not restoring to non-empty destination\r\nPlease use the --destination flag"
+
 proc execute*(nc: NorgConfig) =
   putEnv("BORG_PASSPHRASE", nc.getEncryptionPassword())
   for repo in nc.repositories:
@@ -94,4 +112,6 @@ proc execute*(nc: NorgConfig) =
       discard mountArchive(nc, repo)
     of "umount":
       discard unmountArchive(nc)
+    of "extract":
+      discard extractArchive(nc, repo)
   delEnv("BORG_PASSPHRASE")

norg/config/args.nim

@@ -3,6 +3,7 @@ import argparse
 type 
   NorgArgs* = object
     config_file*: string
+    extract_destination*: string
     borg_cmd*: string
     others*: seq[string]
 
@@ -11,11 +12,13 @@ var norg_args*: NorgArgs = NorgArgs()
 proc parseArgs*() =
   var p = newParser:
     option("-c", "--config", help="Config file to use", required = true)
-    arg("borg_cmd", default=some("backup"))
+    option("-d", "--destination", help="Destination when extracting backup", required = false)
+    arg("borg_cmd", default=some("list"))
     arg("others", nargs = -1)
   try:
     var opts = p.parse(commandLineParams())
     norg_args.config_file = opts.config
+    norg_args.extract_destination = opts.destination
     norg_args.borg_cmd = opts.borg_cmd
     norg_args.others = opts.others