blind mgmt setup

private_bin/private_argparse.bash

@@ -0,0 +1,76 @@
+#!/usr/bin/env bash
+declare -gA ARGP
+declare -gA SHORT
+
+__reset_argparse() {
+  declare -gA ARGP
+  declare -gA SHORT
+}
+
+die() { echo "Error: $*"; exit 1; }
+
+def_arg() {
+  test "$3" = bool -o "$3" = value || die "def_arg: type (\$3) must be 'bool' or 'value', received '$3'"
+  ARGP["$1,type"]="$3"
+
+  if [ "$3" = bool ]; then
+    test -z "$4" || die "def_arg: bool args cannot specify required/default"
+    declare -g "$1=0"
+  else
+    test "$4" = required -o "$4" = default || die "def_arg: \$4 must be 'required' or 'default', received '$4'"
+    if [ "$4" = required ]; then
+      ARGP["$1,required"]=1
+    else
+      value="$5"
+      declare -g "$1=$value"
+    fi
+  fi
+
+  if [ -n "$2" ]; then
+    SHORT["$2"]="$1"
+  fi
+}
+
+parse_args() {
+  positional=()
+  while (( $# > 0 )); do
+    next="$1"; shift
+    if [[ "$next" == --* ]]; then
+      arg=${next#--}
+      test -n "${ARGP["$arg,type"]}" || die "unknown arg --$arg"
+      if [ "${ARGP["$arg,type"]}" = bool ]; then
+        value=1
+      elif [ $# -eq 0 ]; then
+        die "Missing value for --$arg"
+      else
+        value="$1"; shift
+      fi
+      declare -g "$arg=$value"
+    elif [[ "$next" == -* ]]; then
+      for ((i = 1 ; i < ${#next} ; i++ )); do
+        short=${next:$i:1}
+        arg=${SHORT["$short"]}
+        test -n "$arg" || die "unknown short arg -$short"
+        if [ "${ARGP["$arg,type"]}" = bool ]; then
+          declare -g "$arg=1"
+        else
+          value=${next:$(( i+1 ))}
+          if [ -z "$value" ]; then
+            value="$1"; shift
+          fi
+          test -n "$value" || die "missing value for -$short"
+          declare -g "$arg=$value"
+          break
+        fi
+      done
+    else
+      positional+=("$next")
+    fi
+  done
+
+  # check for missing required
+  for arg in "${!ARGP[@]}"; do
+    arg="${arg%%,*}"
+    [ "${ARGP["$arg,required"]}" != 1 ] || [ -n "${!arg}" ] || die "missing argument --$arg"
+  done
+}