#!/bin/sh -u
#  $0 [ filenames... ]
# Prompt for a userid.  Email each file to that userid.
# -IAN! idallen@ncf.ca

export PATH=/bin:/usr/bin
umask 022

# Validate all the file names before we begin.
# The status variable is set to 1 if we have any errors.
# The countokay variable is set to 1 if we find at least one good file.
#
status=0
countokay=0
for file do
	echo "The arg is $file"
	if [ ! -r "$file" ]; then
		echo 1>&2 "$0: '$file' is not readable"
		status=1
	fi
	if [ ! -f "$file" ]; then
		echo 1>&2 "$0: '$file' is not a file"
		status=1
	fi
	if [ ! -s "$file" ]; then
		echo 1>&2 "$0: '$file' is empty"
		status=1
	fi
	countokay=1   # found at least one good file
done
if test "$status" -eq 1 ; then
	echo 1>&2 "$0: There was an error; no files processed."
	exit 1
fi
if test "$countokay" -eq 0 ; then
	echo 1>&2 "$0: Cannot find any file names to email.  Nothing done."
	exit 1
fi

# prompt for (on standard error), read, and echo a userid
#
echo 1>&2 "Please enter a userid:"
read userid
echo "You entered '$userid'"

# Loop for each file, mailing it to the userid.
# Exit if the mail command fails.
#
for file do
	# Don't actually do this mailing!  Print a DEBUG line instead.
	echo "DEBUG mail $userid <$file || exit $?"

	# Same code as above, but using "if" instead of "||".
	#if ! echo "mail $userid <$file" ; then
	#	exit $?
	#fi
done