lib/install-sh

   1 #!/bin/sh
   2 # install - install a program, script, or datafile
   3 # This originally came from X11R5 (mit/util/scripts/install.sh).
   4
   5 scriptversion=2003-01-17.15
   6
   7 # Copyright 1991 by the Massachusetts Institute of Technology
   8 # (FSF changes in the public domain.)
   9 #
  10 # Permission to use, copy, modify, distribute, and sell this software and its
  11 # documentation for any purpose is hereby granted without fee, provided that
  12 # the above copyright notice appear in all copies and that both that
  13 # copyright notice and this permission notice appear in supporting
  14 # documentation, and that the name of M.I.T. not be used in advertising or
  15 # publicity pertaining to distribution of the software without specific,
  16 # written prior permission.  M.I.T. makes no representations about the
  17 # suitability of this software for any purpose.  It is provided "as is"
  18 # without express or implied warranty.
  19 #
  20 # Calling this script install-sh is preferred over install.sh, to prevent
  21 # `make' implicit rules from creating a file called install from it
  22 # when there is no Makefile.
  23 #
  24 # This script is compatible with the BSD install script, but was written
  25 # from scratch.  It can only install one file at a time, a restriction
  26 # shared with many OS's install programs.
  27
  28 # set DOITPROG to echo to test this script
  29
  30 # Don't use :- since 4.3BSD and earlier shells don't like it.
  31 doit="${DOITPROG-}"
  32
  33 # put in absolute paths if you don't have them in your path; or use env. vars.
  34
  35 mvprog="${MVPROG-mv}"
  36 cpprog="${CPPROG-cp}"
  37 chmodprog="${CHMODPROG-chmod}"
  38 chownprog="${CHOWNPROG-chown}"
  39 chgrpprog="${CHGRPPROG-chgrp}"
  40 stripprog="${STRIPPROG-strip}"
  41 rmprog="${RMPROG-rm}"
  42 mkdirprog="${MKDIRPROG-mkdir}"
  43
  44 transformbasename=
  45 transform_arg=
  46 instcmd="$mvprog"
  47 chmodcmd="$chmodprog 0755"
  48 chowncmd=
  49 chgrpcmd=
  50 stripcmd=
  51 rmcmd="$rmprog -f"
  52 mvcmd="$mvprog"
  53 src=
  54 dst=
  55 dir_arg=
  56
  57 usage="Usage: $0 [OPTION]... SRCFILE DSTFILE
  58    or: $0 -d DIR1 DIR2...
  59
  60 In the first form, install SRCFILE to DSTFILE, removing SRCFILE by default.
  61 In the second, create the directory path DIR.
  62
  63 Options:
  64 -b=TRANSFORMBASENAME
  65 -c         copy source (using $cpprog) instead of moving (using $mvprog).
  66 -d         create directories instead of installing files.
  67 -g GROUP   $chgrp installed files to GROUP.
  68 -m MODE    $chmod installed files to MODE.
  69 -o USER    $chown installed files to USER.
  70 -s         strip installed files (using $stripprog).
  71 -t=TRANSFORM
  72 --help     display this help and exit.
  73 --version  display version info and exit.
  74
  75 Environment variables override the default commands:
  76   CHGRPPROG CHMODPROG CHOWNPROG CPPROG MKDIRPROG MVPROG RMPROG STRIPPROG
  77 "
  78
  79 while test -n "$1"; do
  80   case $1 in
  81     -b=*) transformbasename=`echo $1 | sed 's/-b=//'`
  82         shift
  83         continue;;
  84
  85     -c) instcmd=$cpprog
  86         shift
  87         continue;;
  88
  89     -d) dir_arg=true
  90         shift
  91         continue;;
  92
  93     -g) chgrpcmd="$chgrpprog $2"
  94         shift
  95         shift
  96         continue;;
  97
  98     --help) echo "$usage"; exit 0;;
  99
 100     -m) chmodcmd="$chmodprog $2"
 101         shift
 102         shift
 103         continue;;
 104
 105     -o) chowncmd="$chownprog $2"
 106         shift
 107         shift
 108         continue;;
 109
 110     -s) stripcmd=$stripprog
 111         shift
 112         continue;;
 113
 114     -t=*) transformarg=`echo $1 | sed 's/-t=//'`
 115         shift
 116         continue;;
 117
 118     --version) echo "$0 $scriptversion"; exit 0;;
 119
 120     *)  if test -z "$src"; then
 121           src=$1
 122         else
 123           # this colon is to work around a 386BSD /bin/sh bug
 124           :
 125           dst=$1
 126         fi
 127         shift
 128         continue;;
 129   esac
 130 done
 131
 132 if test -z "$src"; then
 133   echo "$0: no input file specified." >&2
 134   exit 1
 135 fi
 136
 137 if test -n "$dir_arg"; then
 138   dst=$src
 139   src=
 140
 141   if test -d "$dst"; then
 142     instcmd=:
 143     chmodcmd=
 144   else
 145     instcmd=$mkdirprog
 146   fi
 147 else
 148   # Waiting for this to be detected by the "$instcmd $src $dsttmp" command
 149   # might cause directories to be created, which would be especially bad
 150   # if $src (and thus $dsttmp) contains '*'.
 151   if test ! -f "$src" && test ! -d "$src"; then
 152     echo "$0: $src does not exist." >&2
 153     exit 1
 154   fi
 155
 156   if test -z "$dst"; then
 157     echo "$0: no destination specified." >&2
 158     exit 1
 159   fi
 160
 161   # If destination is a directory, append the input filename; won't work
 162   # if double slashes aren't ignored.
 163   if test -d "$dst"; then
 164     dst=$dst/`basename "$src"`
 165   fi
 166 fi
 167
 168 ## this sed command emulates the dirname command
 169 dstdir=`echo "$dst" | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'`
 170
 171 # Make sure that the destination directory exists.
 172 # (this part is taken from Noah Friedman's mkinstalldirs script.)
 173
 174 # Skip lots of stat calls in the usual case.
 175 if test ! -d "$dstdir"; then
 176   defaultIFS='
 177         '
 178   IFS="${IFS-$defaultIFS}"
 179
 180   oIFS=$IFS
 181   # Some sh's can't handle IFS=/ for some reason.
 182   IFS='%'
 183   set - `echo "$dstdir" | sed -e 's@/@%@g' -e 's@^%@/@'`
 184   IFS=$oIFS
 185
 186   pathcomp=
 187
 188   while test $# -ne 0 ; do
 189     pathcomp=$pathcomp$1
 190     shift
 191     test -d "$pathcomp" || $mkdirprog "$pathcomp"
 192     pathcomp=$pathcomp/
 193   done
 194 fi
 195
 196 if test -n "$dir_arg"; then
 197   $doit $instcmd "$dst" \
 198     && { test -z "$chowncmd" || $doit $chowncmd "$dst"; } \
 199     && { test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } \
 200     && { test -z "$stripcmd" || $doit $stripcmd "$dst"; } \
 201     && { test -z "$chmodcmd" || $doit $chmodcmd "$dst"; }
 202
 203 else
 204   # If we're going to rename the final executable, determine the name now.
 205   if test -z "$transformarg"; then
 206     dstfile=`basename "$dst"`
 207   else
 208     dstfile=`basename "$dst" $transformbasename \
 209              | sed $transformarg`$transformbasename
 210   fi
 211
 212   # don't allow the sed command to completely eliminate the filename.
 213   test -z "$dstfile" && dstfile=`basename "$dst"`
 214
 215   # Make a couple of temp file names in the proper directory.
 216   dsttmp=$dstdir/#inst.$$#
 217   rmtmp=$dstdir/#rm.$$#
 218
 219   # Trap to clean up those temp files at exit.
 220   trap 'status=$?; rm -f "$dsttmp" "$rmtmp" && exit $status' 0
 221   trap '(exit $?); exit' 1 2 13 15
 222
 223   # Move or copy the file name to the temp name
 224   $doit $instcmd "$src" "$dsttmp" &&
 225
 226   # and set any options; do chmod last to preserve setuid bits.
 227   #
 228   # If any of these fail, we abort the whole thing.  If we want to
 229   # ignore errors from any of these, just make sure not to ignore
 230   # errors from the above "$doit $instcmd $src $dsttmp" command.
 231   #
 232   { test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } \
 233     && { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } \
 234     && { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } \
 235     && { test -z "$chmodcmd" || $doit $chmodcmd "$dsttmp"; } &&
 236
 237   # Now remove or move aside any old file at destination location.  We
 238   # try this two ways since rm can't unlink itself on some systems and
 239   # the destination file might be busy for other reasons.  In this case,
 240   # the final cleanup might fail but the new file should still install
 241   # successfully.
 242   {
 243     if test -f "$dstdir/$dstfile"; then
 244       $doit $rmcmd -f "$dstdir/$dstfile" 2>/dev/null \
 245       || $doit $mvcmd -f "$dstdir/$dstfile" "$rmtmp" 2>/dev/null \
 246       || {
 247           echo "$0: cannot unlink or rename $dstdir/$dstfile" >&2
 248           (exit 1); exit
 249       }
 250     else
 251       :
 252     fi
 253   } &&
 254
 255   # Now rename the file to the real destination.
 256   $doit $mvcmd "$dsttmp" "$dstdir/$dstfile"
 257 fi &&
 258
 259 # The final little trick to "correctly" pass the exit status to the exit trap.
 260 {
 261   (exit 0); exit
 262 }
 263
 264 # Local variables:
 265 # eval: (add-hook 'write-file-hooks 'time-stamp)
 266 # time-stamp-start: "scriptversion="
 267 # time-stamp-format: "%:y-%02m-%02d.%02H"
 268 # time-stamp-end: "$"
 269 # End: