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[libt2n] / install-sh
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1#!/bin/sh
2#
3# install - install a program, script, or datafile
4# This comes from X11R5 (mit/util/scripts/install.sh).
5#
6# Copyright 1991 by the Massachusetts Institute of Technology
7#
8# Permission to use, copy, modify, distribute, and sell this software and its
9# documentation for any purpose is hereby granted without fee, provided that
10# the above copyright notice appear in all copies and that both that
11# copyright notice and this permission notice appear in supporting
12# documentation, and that the name of M.I.T. not be used in advertising or
13# publicity pertaining to distribution of the software without specific,
14# written prior permission. M.I.T. makes no representations about the
15# suitability of this software for any purpose. It is provided "as is"
16# without express or implied warranty.
17#
18# Calling this script install-sh is preferred over install.sh, to prevent
19# `make' implicit rules from creating a file called install from it
20# when there is no Makefile.
21#
22# This script is compatible with the BSD install script, but was written
23# from scratch. It can only install one file at a time, a restriction
24# shared with many OS's install programs.
25
26
27# set DOITPROG to echo to test this script
28
29# Don't use :- since 4.3BSD and earlier shells don't like it.
30doit="${DOITPROG-}"
31
32
33# put in absolute paths if you don't have them in your path; or use env. vars.
34
35mvprog="${MVPROG-mv}"
36cpprog="${CPPROG-cp}"
37chmodprog="${CHMODPROG-chmod}"
38chownprog="${CHOWNPROG-chown}"
39chgrpprog="${CHGRPPROG-chgrp}"
40stripprog="${STRIPPROG-strip}"
41rmprog="${RMPROG-rm}"
42mkdirprog="${MKDIRPROG-mkdir}"
43
44transformbasename=""
45transform_arg=""
46instcmd="$mvprog"
47chmodcmd="$chmodprog 0755"
48chowncmd=""
49chgrpcmd=""
50stripcmd=""
51rmcmd="$rmprog -f"
52mvcmd="$mvprog"
53src=""
54dst=""
55dir_arg=""
56
57while [ x"$1" != x ]; do
58 case $1 in
59 -c) instcmd=$cpprog
60 shift
61 continue;;
62
63 -d) dir_arg=true
64 shift
65 continue;;
66
67 -m) chmodcmd="$chmodprog $2"
68 shift
69 shift
70 continue;;
71
72 -o) chowncmd="$chownprog $2"
73 shift
74 shift
75 continue;;
76
77 -g) chgrpcmd="$chgrpprog $2"
78 shift
79 shift
80 continue;;
81
82 -s) stripcmd=$stripprog
83 shift
84 continue;;
85
86 -t=*) transformarg=`echo $1 | sed 's/-t=//'`
87 shift
88 continue;;
89
90 -b=*) transformbasename=`echo $1 | sed 's/-b=//'`
91 shift
92 continue;;
93
94 *) if [ x"$src" = x ]
95 then
96 src=$1
97 else
98 # this colon is to work around a 386BSD /bin/sh bug
99 :
100 dst=$1
101 fi
102 shift
103 continue;;
104 esac
105done
106
107if [ x"$src" = x ]
108then
109 echo "$0: no input file specified" >&2
110 exit 1
111else
112 :
113fi
114
115if [ x"$dir_arg" != x ]; then
116 dst=$src
117 src=""
118
119 if [ -d "$dst" ]; then
120 instcmd=:
121 chmodcmd=""
122 else
123 instcmd=$mkdirprog
124 fi
125else
126
127# Waiting for this to be detected by the "$instcmd $src $dsttmp" command
128# might cause directories to be created, which would be especially bad
129# if $src (and thus $dsttmp) contains '*'.
130
131 if [ -f "$src" ] || [ -d "$src" ]
132 then
133 :
134 else
135 echo "$0: $src does not exist" >&2
136 exit 1
137 fi
138
139 if [ x"$dst" = x ]
140 then
141 echo "$0: no destination specified" >&2
142 exit 1
143 else
144 :
145 fi
146
147# If destination is a directory, append the input filename; if your system
148# does not like double slashes in filenames, you may need to add some logic
149
150 if [ -d "$dst" ]
151 then
152 dst=$dst/`basename "$src"`
153 else
154 :
155 fi
156fi
157
158## this sed command emulates the dirname command
159dstdir=`echo "$dst" | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'`
160
161# Make sure that the destination directory exists.
162# this part is taken from Noah Friedman's mkinstalldirs script
163
164# Skip lots of stat calls in the usual case.
165if [ ! -d "$dstdir" ]; then
166defaultIFS='
167 '
168IFS="${IFS-$defaultIFS}"
169
170oIFS=$IFS
171# Some sh's can't handle IFS=/ for some reason.
172IFS='%'
173set - `echo "$dstdir" | sed -e 's@/@%@g' -e 's@^%@/@'`
174IFS=$oIFS
175
176pathcomp=''
177
178while [ $# -ne 0 ] ; do
179 pathcomp=$pathcomp$1
180 shift
181
182 if [ ! -d "$pathcomp" ] ;
183 then
184 $mkdirprog "$pathcomp"
185 else
186 :
187 fi
188
189 pathcomp=$pathcomp/
190done
191fi
192
193if [ x"$dir_arg" != x ]
194then
195 $doit $instcmd "$dst" &&
196
197 if [ x"$chowncmd" != x ]; then $doit $chowncmd "$dst"; else : ; fi &&
198 if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd "$dst"; else : ; fi &&
199 if [ x"$stripcmd" != x ]; then $doit $stripcmd "$dst"; else : ; fi &&
200 if [ x"$chmodcmd" != x ]; then $doit $chmodcmd "$dst"; else : ; fi
201else
202
203# If we're going to rename the final executable, determine the name now.
204
205 if [ x"$transformarg" = x ]
206 then
207 dstfile=`basename "$dst"`
208 else
209 dstfile=`basename "$dst" $transformbasename |
210 sed $transformarg`$transformbasename
211 fi
212
213# don't allow the sed command to completely eliminate the filename
214
215 if [ x"$dstfile" = x ]
216 then
217 dstfile=`basename "$dst"`
218 else
219 :
220 fi
221
222# Make a couple of temp file names in the proper directory.
223
224 dsttmp=$dstdir/#inst.$$#
225 rmtmp=$dstdir/#rm.$$#
226
227# Trap to clean up temp files at exit.
228
229 trap 'status=$?; rm -f "$dsttmp" "$rmtmp" && exit $status' 0
230 trap '(exit $?); exit' 1 2 13 15
231
232# Move or copy the file name to the temp name
233
234 $doit $instcmd "$src" "$dsttmp" &&
235
236# and set any options; do chmod last to preserve setuid bits
237
238# If any of these fail, we abort the whole thing. If we want to
239# ignore errors from any of these, just make sure not to ignore
240# errors from the above "$doit $instcmd $src $dsttmp" command.
241
242 if [ x"$chowncmd" != x ]; then $doit $chowncmd "$dsttmp"; else :;fi &&
243 if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd "$dsttmp"; else :;fi &&
244 if [ x"$stripcmd" != x ]; then $doit $stripcmd "$dsttmp"; else :;fi &&
245 if [ x"$chmodcmd" != x ]; then $doit $chmodcmd "$dsttmp"; else :;fi &&
246
247# Now remove or move aside any old file at destination location. We try this
248# two ways since rm can't unlink itself on some systems and the destination
249# file might be busy for other reasons. In this case, the final cleanup
250# might fail but the new file should still install successfully.
251
252{
253 if [ -f "$dstdir/$dstfile" ]
254 then
255 $doit $rmcmd -f "$dstdir/$dstfile" 2>/dev/null ||
256 $doit $mvcmd -f "$dstdir/$dstfile" "$rmtmp" 2>/dev/null ||
257 {
258 echo "$0: cannot unlink or rename $dstdir/$dstfile" >&2
259 (exit 1); exit
260 }
261 else
262 :
263 fi
264} &&
265
266# Now rename the file to the real destination.
267
268 $doit $mvcmd "$dsttmp" "$dstdir/$dstfile"
269
270fi &&
271
272# The final little trick to "correctly" pass the exit status to the exit trap.
273
274{
275 (exit 0); exit
276}