1249666Strociny#!/bin/sh
2249666Strociny#
3249666Strociny# Copyright (c) September 1995 Wolfram Schneider <wosch@FreeBSD.org>. Berlin.
4249666Strociny# All rights reserved.
5249666Strociny#
6249666Strociny# Redistribution and use in source and binary forms, with or without
7249666Strociny# modification, are permitted provided that the following conditions
8249666Strociny# are met:
9249666Strociny# 1. Redistributions of source code must retain the above copyright
10249666Strociny#    notice, this list of conditions and the following disclaimer.
11249666Strociny# 2. Redistributions in binary form must reproduce the above copyright
12249666Strociny#    notice, this list of conditions and the following disclaimer in the
13249666Strociny#    documentation and/or other materials provided with the distribution.
14249666Strociny#
15249666Strociny# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16249666Strociny# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17249666Strociny# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18249666Strociny# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19249666Strociny# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20249666Strociny# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21249666Strociny# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22249666Strociny# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23249666Strociny# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24249666Strociny# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25249666Strociny# SUCH DAMAGE.
26249666Strociny#
27249666Strociny# mklocatedb - build locate database
28249666Strociny# 
29249666Strociny# usage: mklocatedb [-presort] < filelist > database
30249666Strociny#
31249666Strociny# $FreeBSD$
32249666Strociny
33249666Strociny# The directory containing locate subprograms
34249666Strociny: ${LIBEXECDIR:=/usr/libexec}; export LIBEXECDIR
35249666Strociny
36249670StrocinyPATH=$LIBEXECDIR:/bin:/usr/bin:$PATH; export PATH
37249672Strociny
38249674Strocinyumask 077			# protect temp files
39249677Strociny
40249679Strociny: ${TMPDIR:=/tmp}; export TMPDIR
41249679Strocinytest -d "$TMPDIR" || TMPDIR=/tmp
42249679Strocinyif ! TMPDIR=`mktemp -d $TMPDIR/mklocateXXXXXXXXXX`; then
43249681Strociny	exit 1
44249666Strocinyfi
45249666Strociny
46249666Strociny
47249666Strociny# utilities to built locate database
48249666Strociny: ${bigram:=locate.bigram}
49249666Strociny: ${code:=locate.code}
50249666Strociny: ${sort:=sort}
51249666Strociny
52249666Strociny
53249666Strocinysortopt="-u -T $TMPDIR"
54sortcmd=$sort
55
56
57bigrams=$TMPDIR/_mklocatedb$$.bigrams
58filelist=$TMPDIR/_mklocatedb$$.list
59
60trap 'rm -f $bigrams $filelist; rmdir $TMPDIR' 0 1 2 3 5 10 15
61
62
63# Input already sorted
64if [ X"$1" = "X-presort" ]; then
65    shift; 
66
67    # create an empty file
68    true > $bigrams
69    
70    # Locate database bootstrapping
71    # 1. first build a temp database without bigram compression
72    # 2. create the bigram from the temp database
73    # 3. create the real locate database with bigram compression.
74    #
75    # This scheme avoid large temporary files in /tmp
76
77    $code $bigrams > $filelist || exit 1
78    locate -d $filelist / | $bigram | $sort -nr | head -128 |
79    awk '{if (/^[ 	]*[0-9]+[ 	]+..$/) {printf("%s",$2)} else {exit 1}}' > $bigrams || exit 1
80    locate -d $filelist / | $code $bigrams || exit 1
81    exit 	
82
83else
84    if $sortcmd $sortopt > $filelist; then
85        $bigram < $filelist | $sort -nr | 
86	awk '{if (/^[ 	]*[0-9]+[ 	]+..$/) {printf("%s",$2)} else {exit 1}}' > $bigrams || exit 1
87        $code $bigrams < $filelist || exit 1
88    else
89        echo "`basename $0`: cannot build locate database" >&2
90        exit 1
91    fi
92fi
93