initial import docopt#36

examples/compatible_docopt.sh/arguments_example.sh

@@ -0,0 +1,55 @@
+#!/usr/bin/env bash
+
+DOC="Argument parser
+Usage: arguments_example.sh [-vqrh] [FILE] ...
+       arguments_example.sh (--left | --right) CORRECTION FILE
+
+Process FILE and optionally apply correction to either left-hand side or
+right-hand side.
+
+Arguments:
+  FILE        optional input file
+  CORRECTION  correction angle, needs FILE, --left or --right to be present
+
+Options:
+  -h --help
+  -v       verbose mode
+  -q       quiet mode
+  -r       make report
+  --left   use left-hand side
+  --right  use right-hand side"
+
+main_arguments()
+{
+  # main function for this script
+  set | grep "^$DOCOPT_PREFIX"
+
+  return 0
+}
+
+# docopt.sh place holder
+
+DOCOPT_PREFIX=ARGS_
+case $DOCOPT_PARSER in
+  docopts)
+    if [[ -z $(type -p docopts) ]] ; then
+      echo "docopts not found in PATH, use: source example_env.sh"
+      exit 1
+    fi
+    # docopts append _ to prefix
+    eval "$(docopts -G ${DOCOPT_PREFIX%_} --docopt_sh -h "$DOC" : "$@")"
+    ;;
+  docopt.sh)
+    eval "$(docopt "$@")"
+    ;;
+	"")
+		echo "DOCOPT_PARSER is undefined"
+	  exit 1
+    ;;
+  *)
+    echo "DOCOPT_PARSER unsuported value: $DOCOPT_PARSER"
+    exit 1
+    ;;
+esac
+
+main_arguments "$@"

examples/compatible_docopt.sh/example_env.sh

@@ -0,0 +1,42 @@
+#!/usr/bin/env bash
+#
+# Helper to setup environment for this examples
+#
+
+pathadd() {
+  local after=0
+  if [[ "$1" == "after" ]] ; then
+    after=1
+    shift
+  fi
+
+  local p
+
+  for p in $*
+  do
+    if [ -d "$p" ] && ! echo $PATH | grep -E -q "(^|:)$p($|:)" ; then
+      if [[ $after -eq 1 ]]
+      then
+        PATH="$PATH:${p%/}"
+      else
+        PATH="${p%/}:$PATH"
+      fi
+    fi
+  done
+}
+
+# comput current dir
+# reandlink -f use GNU readlink, available on macos via: brew install coreutils
+EXAMPLES_DIR=$(dirname $(readlink -f $BASH_SOURCE))
+DOCOPTS_BIN=$(type -p docopts)
+
+if [[ -z $DOCOPTS_BIN ]] ; then
+  echo "adding to PATH: $EXAMPLES_DIR/../.."
+  pathadd $EXAMPLES_DIR/../..
+  DOCOPTS_BIN=$(type -p docopts)
+  if [[ -z $DOCOPTS_BIN ]] ; then
+    echo "ERROR: docopts not found in PATH, get a binary or compile it."
+  fi
+else
+  echo "using docopts in PATH: $DOCOPTS_BIN"
+fi