Add CombinedConfig.getVal that raises an exception if the config key is not found.

cliutils.nim

@@ -10,7 +10,7 @@ type
 
   TermColor = ForegroundColor or BackgroundColor
 
-proc getVal*(cfg: CombinedConfig, key, default: string): string =
+proc getVal*(cfg: CombinedConfig, key: string): string =
   let argKey = "--" & key
   let envKey = key.replace('-', '_').toUpper
   let jsonKey = key.replace(re"(-\w)", proc (m: RegexMatch): string = ($m)[1..1].toUpper)
@@ -27,8 +27,11 @@ proc getVal*(cfg: CombinedConfig, key, default: string): string =
     of JNull: return ""
     of JObject: return $node
     of JArray: return $node
-  else: return default
+  else: raise newException(ValueError, "cannot find a configuration value for \"" & key & "\"")
 
+proc getVal*(cfg: CombinedConfig, key, default: string): string =
+  try: return getVal(cfg, key)
+  except: return default
 
 proc loadEnv*(): StringTableRef =
   result = newStringTable()
@@ -207,5 +210,5 @@ proc queryParamsToCliArgs*(queryParams: StringTableRef): seq[string] =
     if k.startsWith("arg"): result.add(v)
 
     else :
-      result[1].add("--" & k)
+      result.add("--" & k)
-      if v != "true": result[1].add(v) # support things like ?verbose=true -> cmd --verbose
+      if v != "true": result.add(v) # support things like ?verbose=true -> cmd --verbose

cliutils.nimble

@@ -1,6 +1,6 @@
 # Package
 
-version       = "0.6.1"
+version       = "0.6.2"
 author        = "Jonathan Bernard"
 description   = "Helper functions for writing command line interfaces."
 license       = "MIT"