New arg parser and profile support

lib/config.nim

@@ -1,11 +1,43 @@
+import sequtils
 import options
+import bwrap
+import utils
+import json
 
 type Link* = object
   src*: string
   dst*: string
 
 type Config* = object
-  extends*: Option[seq[string]]
+  extends*: Option[string]
   mount*: Option[seq[string]]
   romount*: Option[seq[string]]
   symlinks*: Option[seq[Link]]
+
+proc applyConfig*(call: var BwrapCall, config: Config) =
+  for mount in config.mount.get(@[]):
+     call.addMount("--bind", checkRelativePath(mount))
+
+  for mount in config.romount.get(@[]):
+     call.addMount("--ro-bind", checkRelativePath(mount))
+
+  for symlink in config.symlinks.get(@[]):
+     call.addArg("--symlink", symlink.src, symlink.dst)
+
+proc loadConfig*(path: string): Config =
+  return readFile(path)
+    .parseJson()
+    .to(Config)
+
+proc extendConfig*(config: var Config): Config {.discardable.} =
+  if config.extends.isNone:
+    return
+
+  var eConf = loadConfig(getProfilePath(config.extends.unsafeGet))
+  eConf.extendConfig()
+
+  config.mount = some(config.mount.get(@[]).concat(eConf.mount.get(@[])))
+  config.romount = some(config.romount.get(@[]).concat(eConf.romount.get(@[])))
+  config.symlinks = some(config.symlinks.get(@[]).concat(eConf.symlinks.get(@[])))
+
+  return config