Annotation of embedaddon/rsync/install-sh, revision 1.1

1.1     ! misho       1: #! /bin/sh
        !             2: #
        !             3: # install - install a program, script, or datafile
        !             4: # This comes from X11R5.
        !             5: #
        !             6: # Calling this script install-sh is preferred over install.sh, to prevent
        !             7: # `make' implicit rules from creating a file called install from it
        !             8: # when there is no Makefile.
        !             9: #
        !            10: # This script is compatible with the BSD install script, but was written
        !            11: # from scratch.
        !            12: #
        !            13: 
        !            14: 
        !            15: # set DOITPROG to echo to test this script
        !            16: 
        !            17: # Don't use :- since 4.3BSD and earlier shells don't like it.
        !            18: doit="${DOITPROG-}"
        !            19: 
        !            20: 
        !            21: # put in absolute paths if you don't have them in your path; or use env. vars.
        !            22: 
        !            23: mvprog="${MVPROG-mv}"
        !            24: cpprog="${CPPROG-cp}"
        !            25: chmodprog="${CHMODPROG-chmod}"
        !            26: chownprog="${CHOWNPROG-chown}"
        !            27: chgrpprog="${CHGRPPROG-chgrp}"
        !            28: stripprog="${STRIPPROG-strip}"
        !            29: rmprog="${RMPROG-rm}"
        !            30: mkdirprog="${MKDIRPROG-mkdir}"
        !            31: 
        !            32: transformbasename=""
        !            33: transform_arg=""
        !            34: instcmd="$mvprog"
        !            35: chmodcmd="$chmodprog 0755"
        !            36: chowncmd=""
        !            37: chgrpcmd=""
        !            38: stripcmd=""
        !            39: rmcmd="$rmprog -f"
        !            40: mvcmd="$mvprog"
        !            41: src=""
        !            42: dst=""
        !            43: dir_arg=""
        !            44: 
        !            45: while [ x"$1" != x ]; do
        !            46:     case $1 in
        !            47:        -c) instcmd="$cpprog"
        !            48:            shift
        !            49:            continue;;
        !            50: 
        !            51:        -d) dir_arg=true
        !            52:            shift
        !            53:            continue;;
        !            54: 
        !            55:        -m) chmodcmd="$chmodprog $2"
        !            56:            shift
        !            57:            shift
        !            58:            continue;;
        !            59: 
        !            60:        -o) chowncmd="$chownprog $2"
        !            61:            shift
        !            62:            shift
        !            63:            continue;;
        !            64: 
        !            65:        -g) chgrpcmd="$chgrpprog $2"
        !            66:            shift
        !            67:            shift
        !            68:            continue;;
        !            69: 
        !            70:        -s) stripcmd="$stripprog"
        !            71:            shift
        !            72:            continue;;
        !            73: 
        !            74:        -t=*) transformarg=`echo $1 | sed 's/-t=//'`
        !            75:            shift
        !            76:            continue;;
        !            77: 
        !            78:        -b=*) transformbasename=`echo $1 | sed 's/-b=//'`
        !            79:            shift
        !            80:            continue;;
        !            81: 
        !            82:        *)  if [ x"$src" = x ]
        !            83:            then
        !            84:                src=$1
        !            85:            else
        !            86:                # this colon is to work around a 386BSD /bin/sh bug
        !            87:                :
        !            88:                dst=$1
        !            89:            fi
        !            90:            shift
        !            91:            continue;;
        !            92:     esac
        !            93: done
        !            94: 
        !            95: if [ x"$src" = x ]
        !            96: then
        !            97:        echo "install:  no input file specified"
        !            98:        exit 1
        !            99: else
        !           100:        true
        !           101: fi
        !           102: 
        !           103: if [ x"$dir_arg" != x ]; then
        !           104:        dst=$src
        !           105:        src=""
        !           106:        
        !           107:        if [ -d $dst ]; then
        !           108:                instcmd=:
        !           109:        else
        !           110:                instcmd=mkdir
        !           111:        fi
        !           112: else
        !           113: 
        !           114: # Waiting for this to be detected by the "$instcmd $src $dsttmp" command
        !           115: # might cause directories to be created, which would be especially bad 
        !           116: # if $src (and thus $dsttmp) contains '*'.
        !           117: 
        !           118:        if [ -f $src -o -d $src ]
        !           119:        then
        !           120:                true
        !           121:        else
        !           122:                echo "install:  $src does not exist"
        !           123:                exit 1
        !           124:        fi
        !           125:        
        !           126:        if [ x"$dst" = x ]
        !           127:        then
        !           128:                echo "install:  no destination specified"
        !           129:                exit 1
        !           130:        else
        !           131:                true
        !           132:        fi
        !           133: 
        !           134: # If destination is a directory, append the input filename; if your system
        !           135: # does not like double slashes in filenames, you may need to add some logic
        !           136: 
        !           137:        if [ -d $dst ]
        !           138:        then
        !           139:                dst="$dst"/`basename $src`
        !           140:        else
        !           141:                true
        !           142:        fi
        !           143: fi
        !           144: 
        !           145: ## this sed command emulates the dirname command
        !           146: dstdir=`echo $dst | sed -e 's,[^/]*$,,;s,/$,,;s,^$,.,'`
        !           147: 
        !           148: # Make sure that the destination directory exists.
        !           149: #  this part is taken from Noah Friedman's mkinstalldirs script
        !           150: 
        !           151: # Skip lots of stat calls in the usual case.
        !           152: if [ ! -d "$dstdir" ]; then
        !           153: defaultIFS='   
        !           154: '
        !           155: IFS="${IFS-${defaultIFS}}"
        !           156: 
        !           157: oIFS="${IFS}"
        !           158: # Some sh's can't handle IFS=/ for some reason.
        !           159: IFS='%'
        !           160: set - `echo ${dstdir} | sed -e 's@/@%@g' -e 's@^%@/@'`
        !           161: IFS="${oIFS}"
        !           162: 
        !           163: pathcomp=''
        !           164: 
        !           165: while [ $# -ne 0 ] ; do
        !           166:        pathcomp="${pathcomp}${1}"
        !           167:        shift
        !           168: 
        !           169:        if [ ! -d "${pathcomp}" ] ;
        !           170:         then
        !           171:                $mkdirprog "${pathcomp}"
        !           172:        else
        !           173:                true
        !           174:        fi
        !           175: 
        !           176:        pathcomp="${pathcomp}/"
        !           177: done
        !           178: fi
        !           179: 
        !           180: if [ x"$dir_arg" != x ]
        !           181: then
        !           182:        $doit $instcmd $dst &&
        !           183: 
        !           184:        if [ x"$chowncmd" != x ]; then $doit $chowncmd $dst; else true ; fi &&
        !           185:        if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dst; else true ; fi &&
        !           186:        if [ x"$stripcmd" != x ]; then $doit $stripcmd $dst; else true ; fi &&
        !           187:        if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dst; else true ; fi
        !           188: else
        !           189: 
        !           190: # If we're going to rename the final executable, determine the name now.
        !           191: 
        !           192:        if [ x"$transformarg" = x ] 
        !           193:        then
        !           194:                dstfile=`basename $dst`
        !           195:        else
        !           196:                dstfile=`basename $dst $transformbasename | 
        !           197:                        sed $transformarg`$transformbasename
        !           198:        fi
        !           199: 
        !           200: # don't allow the sed command to completely eliminate the filename
        !           201: 
        !           202:        if [ x"$dstfile" = x ] 
        !           203:        then
        !           204:                dstfile=`basename $dst`
        !           205:        else
        !           206:                true
        !           207:        fi
        !           208: 
        !           209: # Make a temp file name in the proper directory.
        !           210: 
        !           211:        dsttmp=$dstdir/_inst.$$_
        !           212: 
        !           213: # Move or copy the file name to the temp name
        !           214: 
        !           215:        $doit $instcmd $src $dsttmp &&
        !           216: 
        !           217:        trap "rm -f ${dsttmp}" 0 &&
        !           218: 
        !           219: # and set any options; do chmod last to preserve setuid bits
        !           220: 
        !           221: # If any of these fail, we abort the whole thing.  If we want to
        !           222: # ignore errors from any of these, just make sure not to ignore
        !           223: # errors from the above "$doit $instcmd $src $dsttmp" command.
        !           224: 
        !           225:        if [ x"$chowncmd" != x ]; then $doit $chowncmd $dsttmp; else true;fi &&
        !           226:        if [ x"$chgrpcmd" != x ]; then $doit $chgrpcmd $dsttmp; else true;fi &&
        !           227:        if [ x"$stripcmd" != x ]; then $doit $stripcmd $dsttmp; else true;fi &&
        !           228:        if [ x"$chmodcmd" != x ]; then $doit $chmodcmd $dsttmp; else true;fi &&
        !           229: 
        !           230: # Now rename the file to the real destination.
        !           231: 
        !           232:        $doit $rmcmd -f $dstdir/$dstfile &&
        !           233:        $doit $mvcmd $dsttmp $dstdir/$dstfile 
        !           234: 
        !           235: fi &&
        !           236: 
        !           237: 
        !           238: exit 0

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