From b7fc9e0f6d6105ba2203f219743d4b269415e84b Mon Sep 17 00:00:00 2001
From: An-Cheng Huang <ancheng@vyatta.com>
Date: Mon, 12 Nov 2007 13:06:02 -0800
Subject: initial import from bash_3.1dfsg.orig.tar.gz

---
 examples/functions/which | 44 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 examples/functions/which

(limited to 'examples/functions/which')

diff --git a/examples/functions/which b/examples/functions/which
new file mode 100644
index 0000000..ca33703
--- /dev/null
+++ b/examples/functions/which
@@ -0,0 +1,44 @@
+#
+# which - emulation of `which' as it appears in FreeBSD
+#
+# usage: which [-as] command [command...]
+#
+
+which()
+{
+	local aflag sflag ES a opt
+
+	OPTIND=1
+	while builtin getopts as opt ; do
+		case "$opt" in
+		a)	aflag=-a ;;
+		s)	sflag=1 ;;
+		?)	echo "which: usage: which [-as] command [command ...]" >&2
+			exit 2 ;;
+		esac
+	done
+
+	(( $OPTIND > 1 )) && shift $(( $OPTIND - 1 ))
+
+	# without command arguments, exit with status 1
+	ES=1
+
+	# exit status is 0 if all commands are found, 1 if any are not found
+	for command; do
+		# if $command is a function, make sure we add -a so type
+		# will look in $PATH after finding the function
+		a=$aflag
+		case "$(builtin type -t $command)" in
+		"function")	a=-a;;
+		esac
+
+		if [ -n "$sflag" ]; then
+			builtin type -p $a $command >/dev/null 2>&1
+		else
+			builtin type -p $a $command
+		fi
+		ES=$?
+	done
+
+	return $ES
+}
-- 
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