Imported Upstream version 2.22upstream/2.22upstream

1 files changed, 47 insertions, 0 deletions

diff --git a/misc-utils/getopt-parse.bash b/misc-utils/getopt-parse.bash
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+++ b/misc-utils/getopt-parse.bash
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+#!/bin/bash
+
+# A small example program for using the new getopt(1) program.
+# This program will only work with bash(1)
+# An similar program using the tcsh(1) script language can be found
+# as parse.tcsh
+
+# Example input and output (from the bash prompt):
+# ./parse.bash -a par1 'another arg' --c-long 'wow!*\?' -cmore -b " very long "
+# Option a
+# Option c, no argument
+# Option c, argument `more'
+# Option b, argument ` very long '
+# Remaining arguments:
+# --> `par1'
+# --> `another arg'
+# --> `wow!*\?'
+
+# Note that we use `"$@"' to let each command-line parameter expand to a
+# separate word. The quotes around `$@' are essential!
+# We need TEMP as the `eval set --' would nuke the return value of getopt.
+TEMP=`getopt -o ab:c:: --long a-long,b-long:,c-long:: \
+     -n 'example.bash' -- "$@"`
+
+if [ $? != 0 ] ; then echo "Terminating..." >&2 ; exit 1 ; fi
+
+# Note the quotes around `$TEMP': they are essential!
+eval set -- "$TEMP"
+
+while true ; do
+	case "$1" in
+		-a|--a-long) echo "Option a" ; shift ;;
+		-b|--b-long) echo "Option b, argument \`$2'" ; shift 2 ;;
+		-c|--c-long)
+			# c has an optional argument. As we are in quoted mode,
+			# an empty parameter will be generated if its optional
+			# argument is not found.
+			case "$2" in
+				"") echo "Option c, no argument"; shift 2 ;;
+				*)  echo "Option c, argument \`$2'" ; shift 2 ;;
+			esac ;;
+		--) shift ; break ;;
+		*) echo "Internal error!" ; exit 1 ;;
+	esac
+done
+echo "Remaining arguments:"
+for arg do echo '--> '"\`$arg'" ; done