src/png/install-sh

   1 #!/bin/sh
   2 # install - install a program, script, or datafile
   3
   4 scriptversion=2009-04-28.21; # UTC
   5
   6 # This originates from X11R5 (mit/util/scripts/install.sh), which was
   7 # later released in X11R6 (xc/config/util/install.sh) with the
   8 # following copyright and license.
   9 #
  10 # Copyright (C) 1994 X Consortium
  11 #
  12 # Permission is hereby granted, free of charge, to any person obtaining a copy
  13 # of this software and associated documentation files (the "Software"), to
  14 # deal in the Software without restriction, including without limitation the
  15 # rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
  16 # sell copies of the Software, and to permit persons to whom the Software is
  17 # furnished to do so, subject to the following conditions:
  18 #
  19 # The above copyright notice and this permission notice shall be included in
  20 # all copies or substantial portions of the Software.
  21 #
  22 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  23 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  24 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
  25 # X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  26 # AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-
  27 # TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28 #
  29 # Except as contained in this notice, the name of the X Consortium shall not
  30 # be used in advertising or otherwise to promote the sale, use or other deal-
  31 # ings in this Software without prior written authorization from the X Consor-
  32 # tium.
  33 #
  34 #
  35 # FSF changes to this file are in the public domain.
  36 #
  37 # Calling this script install-sh is preferred over install.sh, to prevent
  38 # `make' implicit rules from creating a file called install from it
  39 # when there is no Makefile.
  40 #
  41 # This script is compatible with the BSD install script, but was written
  42 # from scratch.
  43
  44 nl='
  45 '
  46 IFS=" ""        $nl"
  47
  48 # set DOITPROG to echo to test this script
  49
  50 # Don't use :- since 4.3BSD and earlier shells don't like it.
  51 doit=${DOITPROG-}
  52 if test -z "$doit"; then
  53   doit_exec=exec
  54 else
  55   doit_exec=$doit
  56 fi
  57
  58 # Put in absolute file names if you don't have them in your path;
  59 # or use environment vars.
  60
  61 chgrpprog=${CHGRPPROG-chgrp}
  62 chmodprog=${CHMODPROG-chmod}
  63 chownprog=${CHOWNPROG-chown}
  64 cmpprog=${CMPPROG-cmp}
  65 cpprog=${CPPROG-cp}
  66 mkdirprog=${MKDIRPROG-mkdir}
  67 mvprog=${MVPROG-mv}
  68 rmprog=${RMPROG-rm}
  69 stripprog=${STRIPPROG-strip}
  70
  71 posix_glob='?'
  72 initialize_posix_glob='
  73   test "$posix_glob" != "?" || {
  74     if (set -f) 2>/dev/null; then
  75       posix_glob=
  76     else
  77       posix_glob=:
  78     fi
  79   }
  80 '
  81
  82 posix_mkdir=
  83
  84 # Desired mode of installed file.
  85 mode=0755
  86
  87 chgrpcmd=
  88 chmodcmd=$chmodprog
  89 chowncmd=
  90 mvcmd=$mvprog
  91 rmcmd="$rmprog -f"
  92 stripcmd=
  93
  94 src=
  95 dst=
  96 dir_arg=
  97 dst_arg=
  98
  99 copy_on_change=false
 100 no_target_directory=
 101
 102 usage="\
 103 Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE
 104    or: $0 [OPTION]... SRCFILES... DIRECTORY
 105    or: $0 [OPTION]... -t DIRECTORY SRCFILES...
 106    or: $0 [OPTION]... -d DIRECTORIES...
 107
 108 In the 1st form, copy SRCFILE to DSTFILE.
 109 In the 2nd and 3rd, copy all SRCFILES to DIRECTORY.
 110 In the 4th, create DIRECTORIES.
 111
 112 Options:
 113      --help     display this help and exit.
 114      --version  display version info and exit.
 115
 116   -c            (ignored)
 117   -C            install only if different (preserve the last data modification time)
 118   -d            create directories instead of installing files.
 119   -g GROUP      $chgrpprog installed files to GROUP.
 120   -m MODE       $chmodprog installed files to MODE.
 121   -o USER       $chownprog installed files to USER.
 122   -s            $stripprog installed files.
 123   -t DIRECTORY  install into DIRECTORY.
 124   -T            report an error if DSTFILE is a directory.
 125
 126 Environment variables override the default commands:
 127   CHGRPPROG CHMODPROG CHOWNPROG CMPPROG CPPROG MKDIRPROG MVPROG
 128   RMPROG STRIPPROG
 129 "
 130
 131 while test $# -ne 0; do
 132   case $1 in
 133     -c) ;;
 134
 135     -C) copy_on_change=true;;
 136
 137     -d) dir_arg=true;;
 138
 139     -g) chgrpcmd="$chgrpprog $2"
 140         shift;;
 141
 142     --help) echo "$usage"; exit $?;;
 143
 144     -m) mode=$2
 145         case $mode in
 146           *' '* | *'    '* | *'
 147 '*        | *'*'* | *'?'* | *'['*)
 148             echo "$0: invalid mode: $mode" >&2
 149             exit 1;;
 150         esac
 151         shift;;
 152
 153     -o) chowncmd="$chownprog $2"
 154         shift;;
 155
 156     -s) stripcmd=$stripprog;;
 157
 158     -t) dst_arg=$2
 159         shift;;
 160
 161     -T) no_target_directory=true;;
 162
 163     --version) echo "$0 $scriptversion"; exit $?;;
 164
 165     --) shift
 166         break;;
 167
 168     -*) echo "$0: invalid option: $1" >&2
 169         exit 1;;
 170
 171     *)  break;;
 172   esac
 173   shift
 174 done
 175
 176 if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then
 177   # When -d is used, all remaining arguments are directories to create.
 178   # When -t is used, the destination is already specified.
 179   # Otherwise, the last argument is the destination.  Remove it from $@.
 180   for arg
 181   do
 182     if test -n "$dst_arg"; then
 183       # $@ is not empty: it contains at least $arg.
 184       set fnord "$@" "$dst_arg"
 185       shift # fnord
 186     fi
 187     shift # arg
 188     dst_arg=$arg
 189   done
 190 fi
 191
 192 if test $# -eq 0; then
 193   if test -z "$dir_arg"; then
 194     echo "$0: no input file specified." >&2
 195     exit 1
 196   fi
 197   # It's OK to call `install-sh -d' without argument.
 198   # This can happen when creating conditional directories.
 199   exit 0
 200 fi
 201
 202 if test -z "$dir_arg"; then
 203   trap '(exit $?); exit' 1 2 13 15
 204
 205   # Set umask so as not to create temps with too-generous modes.
 206   # However, 'strip' requires both read and write access to temps.
 207   case $mode in
 208     # Optimize common cases.
 209     *644) cp_umask=133;;
 210     *755) cp_umask=22;;
 211
 212     *[0-7])
 213       if test -z "$stripcmd"; then
 214         u_plus_rw=
 215       else
 216         u_plus_rw='% 200'
 217       fi
 218       cp_umask=`expr '(' 777 - $mode % 1000 ')' $u_plus_rw`;;
 219     *)
 220       if test -z "$stripcmd"; then
 221         u_plus_rw=
 222       else
 223         u_plus_rw=,u+rw
 224       fi
 225       cp_umask=$mode$u_plus_rw;;
 226   esac
 227 fi
 228
 229 for src
 230 do
 231   # Protect names starting with `-'.
 232   case $src in
 233     -*) src=./$src;;
 234   esac
 235
 236   if test -n "$dir_arg"; then
 237     dst=$src
 238     dstdir=$dst
 239     test -d "$dstdir"
 240     dstdir_status=$?
 241   else
 242
 243     # Waiting for this to be detected by the "$cpprog $src $dsttmp" command
 244     # might cause directories to be created, which would be especially bad
 245     # if $src (and thus $dsttmp) contains '*'.
 246     if test ! -f "$src" && test ! -d "$src"; then
 247       echo "$0: $src does not exist." >&2
 248       exit 1
 249     fi
 250
 251     if test -z "$dst_arg"; then
 252       echo "$0: no destination specified." >&2
 253       exit 1
 254     fi
 255
 256     dst=$dst_arg
 257     # Protect names starting with `-'.
 258     case $dst in
 259       -*) dst=./$dst;;
 260     esac
 261
 262     # If destination is a directory, append the input filename; won't work
 263     # if double slashes aren't ignored.
 264     if test -d "$dst"; then
 265       if test -n "$no_target_directory"; then
 266         echo "$0: $dst_arg: Is a directory" >&2
 267         exit 1
 268       fi
 269       dstdir=$dst
 270       dst=$dstdir/`basename "$src"`
 271       dstdir_status=0
 272     else
 273       # Prefer dirname, but fall back on a substitute if dirname fails.
 274       dstdir=`
 275         (dirname "$dst") 2>/dev/null ||
 276         expr X"$dst" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
 277              X"$dst" : 'X\(//\)[^/]' \| \
 278              X"$dst" : 'X\(//\)$' \| \
 279              X"$dst" : 'X\(/\)' \| . 2>/dev/null ||
 280         echo X"$dst" |
 281             sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
 282                    s//\1/
 283                    q
 284                  }
 285                  /^X\(\/\/\)[^/].*/{
 286                    s//\1/
 287                    q
 288                  }
 289                  /^X\(\/\/\)$/{
 290                    s//\1/
 291                    q
 292                  }
 293                  /^X\(\/\).*/{
 294                    s//\1/
 295                    q
 296                  }
 297                  s/.*/./; q'
 298       `
 299
 300       test -d "$dstdir"
 301       dstdir_status=$?
 302     fi
 303   fi
 304
 305   obsolete_mkdir_used=false
 306
 307   if test $dstdir_status != 0; then
 308     case $posix_mkdir in
 309       '')
 310         # Create intermediate dirs using mode 755 as modified by the umask.
 311         # This is like FreeBSD 'install' as of 1997-10-28.
 312         umask=`umask`
 313         case $stripcmd.$umask in
 314           # Optimize common cases.
 315           *[2367][2367]) mkdir_umask=$umask;;
 316           .*0[02][02] | .[02][02] | .[02]) mkdir_umask=22;;
 317
 318           *[0-7])
 319             mkdir_umask=`expr $umask + 22 \
 320               - $umask % 100 % 40 + $umask % 20 \
 321               - $umask % 10 % 4 + $umask % 2
 322             `;;
 323           *) mkdir_umask=$umask,go-w;;
 324         esac
 325
 326         # With -d, create the new directory with the user-specified mode.
 327         # Otherwise, rely on $mkdir_umask.
 328         if test -n "$dir_arg"; then
 329           mkdir_mode=-m$mode
 330         else
 331           mkdir_mode=
 332         fi
 333
 334         posix_mkdir=false
 335         case $umask in
 336           *[123567][0-7][0-7])
 337             # POSIX mkdir -p sets u+wx bits regardless of umask, which
 338             # is incompatible with FreeBSD 'install' when (umask & 300) != 0.
 339             ;;
 340           *)
 341             tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$
 342             trap 'ret=$?; rmdir "$tmpdir/d" "$tmpdir" 2>/dev/null; exit $ret' 0
 343
 344             if (umask $mkdir_umask &&
 345                 exec $mkdirprog $mkdir_mode -p -- "$tmpdir/d") >/dev/null 2>&1
 346             then
 347               if test -z "$dir_arg" || {
 348                    # Check for POSIX incompatibilities with -m.
 349                    # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
 350                    # other-writeable bit of parent directory when it shouldn't.
 351                    # FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
 352                    ls_ld_tmpdir=`ls -ld "$tmpdir"`
 353                    case $ls_ld_tmpdir in
 354                      d????-?r-*) different_mode=700;;
 355                      d????-?--*) different_mode=755;;
 356                      *) false;;
 357                    esac &&
 358                    $mkdirprog -m$different_mode -p -- "$tmpdir" && {
 359                      ls_ld_tmpdir_1=`ls -ld "$tmpdir"`
 360                      test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1"
 361                    }
 362                  }
 363               then posix_mkdir=:
 364               fi
 365               rmdir "$tmpdir/d" "$tmpdir"
 366             else
 367               # Remove any dirs left behind by ancient mkdir implementations.
 368               rmdir ./$mkdir_mode ./-p ./-- 2>/dev/null
 369             fi
 370             trap '' 0;;
 371         esac;;
 372     esac
 373
 374     if
 375       $posix_mkdir && (
 376         umask $mkdir_umask &&
 377         $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir"
 378       )
 379     then :
 380     else
 381
 382       # The umask is ridiculous, or mkdir does not conform to POSIX,
 383       # or it failed possibly due to a race condition.  Create the
 384       # directory the slow way, step by step, checking for races as we go.
 385
 386       case $dstdir in
 387         /*) prefix='/';;
 388         -*) prefix='./';;
 389         *)  prefix='';;
 390       esac
 391
 392       eval "$initialize_posix_glob"
 393
 394       oIFS=$IFS
 395       IFS=/
 396       $posix_glob set -f
 397       set fnord $dstdir
 398       shift
 399       $posix_glob set +f
 400       IFS=$oIFS
 401
 402       prefixes=
 403
 404       for d
 405       do
 406         test -z "$d" && continue
 407
 408         prefix=$prefix$d
 409         if test -d "$prefix"; then
 410           prefixes=
 411         else
 412           if $posix_mkdir; then
 413             (umask=$mkdir_umask &&
 414              $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break
 415             # Don't fail if two instances are running concurrently.
 416             test -d "$prefix" || exit 1
 417           else
 418             case $prefix in
 419               *\'*) qprefix=`echo "$prefix" | sed "s/'/'\\\\\\\\''/g"`;;
 420               *) qprefix=$prefix;;
 421             esac
 422             prefixes="$prefixes '$qprefix'"
 423           fi
 424         fi
 425         prefix=$prefix/
 426       done
 427
 428       if test -n "$prefixes"; then
 429         # Don't fail if two instances are running concurrently.
 430         (umask $mkdir_umask &&
 431          eval "\$doit_exec \$mkdirprog $prefixes") ||
 432           test -d "$dstdir" || exit 1
 433         obsolete_mkdir_used=true
 434       fi
 435     fi
 436   fi
 437
 438   if test -n "$dir_arg"; then
 439     { test -z "$chowncmd" || $doit $chowncmd "$dst"; } &&
 440     { test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } &&
 441     { test "$obsolete_mkdir_used$chowncmd$chgrpcmd" = false ||
 442       test -z "$chmodcmd" || $doit $chmodcmd $mode "$dst"; } || exit 1
 443   else
 444
 445     # Make a couple of temp file names in the proper directory.
 446     dsttmp=$dstdir/_inst.$$_
 447     rmtmp=$dstdir/_rm.$$_
 448
 449     # Trap to clean up those temp files at exit.
 450     trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0
 451
 452     # Copy the file name to the temp name.
 453     (umask $cp_umask && $doit_exec $cpprog "$src" "$dsttmp") &&
 454
 455     # and set any options; do chmod last to preserve setuid bits.
 456     #
 457     # If any of these fail, we abort the whole thing.  If we want to
 458     # ignore errors from any of these, just make sure not to ignore
 459     # errors from the above "$doit $cpprog $src $dsttmp" command.
 460     #
 461     { test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } &&
 462     { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } &&
 463     { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } &&
 464     { test -z "$chmodcmd" || $doit $chmodcmd $mode "$dsttmp"; } &&
 465
 466     # If -C, don't bother to copy if it wouldn't change the file.
 467     if $copy_on_change &&
 468        old=`LC_ALL=C ls -dlL "$dst"     2>/dev/null` &&
 469        new=`LC_ALL=C ls -dlL "$dsttmp"  2>/dev/null` &&
 470
 471        eval "$initialize_posix_glob" &&
 472        $posix_glob set -f &&
 473        set X $old && old=:$2:$4:$5:$6 &&
 474        set X $new && new=:$2:$4:$5:$6 &&
 475        $posix_glob set +f &&
 476
 477        test "$old" = "$new" &&
 478        $cmpprog "$dst" "$dsttmp" >/dev/null 2>&1
 479     then
 480       rm -f "$dsttmp"
 481     else
 482       # Rename the file to the real destination.
 483       $doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null ||
 484
 485       # The rename failed, perhaps because mv can't rename something else
 486       # to itself, or perhaps because mv is so ancient that it does not
 487       # support -f.
 488       {
 489         # Now remove or move aside any old file at destination location.
 490         # We try this two ways since rm can't unlink itself on some
 491         # systems and the destination file might be busy for other
 492         # reasons.  In this case, the final cleanup might fail but the new
 493         # file should still install successfully.
 494         {
 495           test ! -f "$dst" ||
 496           $doit $rmcmd -f "$dst" 2>/dev/null ||
 497           { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null &&
 498             { $doit $rmcmd -f "$rmtmp" 2>/dev/null; :; }
 499           } ||
 500           { echo "$0: cannot unlink or rename $dst" >&2
 501             (exit 1); exit 1
 502           }
 503         } &&
 504
 505         # Now rename the file to the real destination.
 506         $doit $mvcmd "$dsttmp" "$dst"
 507       }
 508     fi || exit 1
 509
 510     trap '' 0
 511   fi
 512 done
 513
 514 # Local variables:
 515 # eval: (add-hook 'write-file-hooks 'time-stamp)
 516 # time-stamp-start: "scriptversion="
 517 # time-stamp-format: "%:y-%02m-%02d.%02H"
 518 # time-stamp-time-zone: "UTC"
 519 # time-stamp-end: "; # UTC"
 520 # End: