#!/bin/sh
set -e

PATTERN=""
COMPLETE_WORD=0
FIND_FILE_LIMIT=1000

while [ $# -gt 0 ]; do
	case "$1" in
	-h|--help)
		echo "usage: $(basename "$0") [-h] [--file|--word] [pattern]"
		exit 0;
		;;
	--file)
		shift
		;;
	--word)
		COMPLETE_WORD=1
		shift
		;;
	*)
		PATTERN="$1"
		break
		;;
	esac
done

if [ $COMPLETE_WORD = 1 ]; then
	tr -cs '[:alnum:]_' '\n' | grep "^$PATTERN." | sort -u
else
	case $PATTERN in
		/*)
			# An absolute path. This is fine.
			;;
		*)
			# A relaive path. Let's make it absolute.
			PATTERN=$PWD/$PATTERN
			;;
	esac

	START=$(dirname "$PATTERN")
	find "$START" \
		! -path '*/\.*' \
		-a -path "$PATTERN*" 2>/dev/null |
		head -n $FIND_FILE_LIMIT |
		sort
fi |
	vis-menu -b |
	cut -b $(( ${#PATTERN} + 1 ))- |
	tr -d '\n'