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Subversion Repositories openrisc_2011-10-31

[/] [openrisc/] [trunk/] [rtos/] [rtems/] [tools/] [build/] [install-if-change.in] - Blame information for rev 487

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Line No. Rev Author Line
1 30 unneback
#!@KSH@ -p
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#
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# Either bash or ksh will be ok for this; requires (( )) arithmetic
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#  (-p above just says to not parse $ENV file; makes it faster for
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#   those of us who set $ENV)
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#
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# install files if they have changed by running 'cmp', then 'install'
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#   as necessary.
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#
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#  Optionally, can append a suffix before last existing suffix (if any)
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#
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# NOTE
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#   We avoid using typical install(1M) programs since they have
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#   large variability across systems and we also need to support ou
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#   -V option.
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#   So we just copy and chmod by hand.
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#
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# $Id: install-if-change.in,v 1.2 2001-09-27 12:02:53 chris Exp $
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#
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progname=`basename $0`
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#progname=${0##*/}        # fast basename hack for ksh, bash
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USAGE=\
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"usage: $progname [ -vmV ] file [ file ... ] dest-directory-or-file
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        -v          -- verbose
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        -V suffix   -- suffix to append to targets (before any . suffix)
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                        eg: -V _g would change 'foo' to 'foo_g' and
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                                               'libfoo.a' to 'libfoo_g.a'
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        -m mode     -- mode for new file(s)"
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fatal() {
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    if [ "$1" ]
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    then
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        echo $* >&2
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    fi
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    echo "$USAGE" 1>&2
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    exit 1
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}
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#
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# process the options
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#
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verbose=""
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suffix=""
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mode=""
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while getopts vm:V: OPT
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do
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    case "$OPT" in
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        v)
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            verbose="yes";;
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        V)
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            eval suffix=$OPTARG;;
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        m)
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            mode="$OPTARG";;
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        *)
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            fatal
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    esac
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done
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shiftcount=`expr $OPTIND - 1`
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shift $shiftcount
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args=$*
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#
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# Separate source file(s) from dest directory or file
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#
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files=""
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dest=""
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for d in $args
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do
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    files="$files $dest"
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    dest=$d
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done
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if [ ! "$files" ] || [ ! "$dest" ]
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then
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    fatal "missing files or invalid destination"
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fi
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#
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# Process the arguments
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#
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targets=""
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for f in $files
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do
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    # leaf=`basename $f`
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    leaf=${f##*/}        # fast basename hack for ksh, bash
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    target=$dest
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    if [ -d $dest ]
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    then
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        # if we were given a suffix, then add it as appropriate
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        if [ "$suffix" ]
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        then
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            case $f in
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                *.*)
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                    # leaf=`echo $leaf |
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                    #   /bin/sed "s/\([~\.]*\)\.\(.*\)$/\1$suffix.\2/"`
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                    # ksh,bash hack for above sed script
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                    leaf=${leaf%%.*}$suffix.${leaf#*.}
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                    [ "$verbose" = "yes" ] &&
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                      echo "$progname: $f will be installed as $leaf"
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                    ;;
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                *)
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                    leaf=$leaf$suffix;;
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            esac
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        fi
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        target=$target/$leaf
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    fi
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    [ ! -r $f ] && fatal "can not read $f"
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    if cmp -s $f $target
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    then
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        [ "$verbose" = "yes" ] && echo "'$f' not newer than '$target'"
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    else
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        [ "$verbose" = "yes" ] && echo "rm -f $target"
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        rm -f $target
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        echo "cp -p $f $target"
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        cp -p $f $target || exit 1
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        targets="$targets $target"    # keep list for chmod below
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    fi
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done
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if [ "$mode" -a "$targets" ]
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then
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     [ "$verbose" = "yes" ] && echo "chmod $mode $targets"
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     chmod $mode $targets
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fi
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exit 0
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# Local Variables: ***
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# mode:ksh ***
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# End: ***

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