install-sh

   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.
  30 doit="${DOITPROG-}"
  31
  32
  33 # put in absolute paths if you don't have them in your path; or use env. vars.
  34
  35 mvprog="${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 while [ 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=$1
 101             fi
 102             shift
 103             continue;;
 104     esac
 105 done
 106
 107 if [ x"$src" = x ]
 108 then
 109         echo "$0: no input file specified" >&2
 110         exit 1
 111 else
 112         :
 113 fi
 114
 115 if [ x"$dir_arg" != x ]; then
 116         dst=$src
 117         src=""
 118
 119         if [ -d "$dst" ]; then
 120                 instcmd=:
 121                 chmodcmd=""
 122         else
 123                 instcmd=$mkdirprog
 124         fi
 125 else
 126
 127 # Waiting for this to be detected by the "$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
 156 fi
 157
 158 ## this sed command emulates the dirname command
 159 dstdir=`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.
 165 if [ ! -d "$dstdir" ]; then
 166 defaultIFS='
 167         '
 168 IFS="${IFS-$defaultIFS}"
 169
 170 oIFS=$IFS
 171 # Some sh's can't handle IFS=/ for some reason.
 172 IFS='%'
 173 set - `echo "$dstdir" | sed -e 's@/@%@g' -e 's@^%@/@'`
 174 IFS=$oIFS
 175
 176 pathcomp=''
 177
 178 while [ $# -ne 0 ] ; do
 179         pathcomp=$pathcomp$1
 180         shift
 181
 182         if [ ! -d "$pathcomp" ] ;
 183         then
 184                 $mkdirprog "$pathcomp"
 185         else
 186                 :
 187         fi
 188
 189         pathcomp=$pathcomp/
 190 done
 191 fi
 192
 193 if [ x"$dir_arg" != x ]
 194 then
 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
 201 else
 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
 270 fi &&
 271
 272 # The final little trick to "correctly" pass the exit status to the exit trap.
 273
 274 {
 275         (exit 0); exit
 276 }