21. sdelete

NOTE : Korn shell /bin/ksh is got by installing pdksh*.rpm from Linux contrib cdrom

Save this file as text file and chmod a+rx on it.

#!/bin/ksh

# CVS program sdelete
# Program to delete the file from CVS

# Every filename is composed of 3 parts - Home directory, sub-directory 
# and the filename. The full-path is $HOME/$subdir/$fname
# And in CVS the same directory structure is maintained (by 
# variable $subdir) therefore in cvs we will have $CVSROOT/$subdir/$fname
# In this program these 4 variables $HOME, $CVSROOT, $subdir and $fname
# play a important role. For example, sample values can be like
# HOME=/home/aldev, subdir=myproject/src CVSROOT=/home/cvsroot 
# and fname=foo.cpp

# Caution: Put double-quotes to protect the variables having 
#          spaces, like "$HOME/$subdir" if subdir is 'some foo.cpp'

cmdname=`basename $0`

if [ $# -lt 1 ]; then
        print "\nUsage: $cmdname <filename> \n"
        exit
fi

onearg="$1"

homedir=` echo $HOME | cut -f1 -d' '  `
if [ "$homedir" = "" ]; then
        print "\nError: \$HOME is not set!!\n"
        exit
fi

cur_dir=`pwd`
len=${#homedir}
len=$(($len + 2))
subdir=` echo $cur_dir | cut -b $len-2000 `
#echo "subdir is : " $subdir
tmpaa=`dirname "$onearg" `
if [ "$tmpaa" = "." ]; then
        fname="$onearg"
        if [ "$subdir" = "" ]; then
                subdir=$tmpaa
        fi
else
        fname=`basename "$onearg" `
        if [ "$subdir" = "" ]; then
                subdir=$tmpaa
        else
                subdir="$subdir/$tmpaa"
        fi
fi
#echo "subdir is : " $subdir
#echo "fname is : " $fname

# CVS directory in your local directory is required for all commands..
if [ ! -d  "$homedir/$subdir/CVS" ]; then
        tmpaa=` (cd "$CVSROOT/$subdir"; find * -prune -type f -print | head -1 ) `
        tmpbb=`basename $tmpaa | cut -d',' -f1 `
        if [ "$tmpaa" = "" -o ! -f "$CVSROOT/$subdir/$tmpbb,v" ]; then
                print "\nThe directory $homedir/$subdir/CVS does not exist"
                print "You must do a sget on `basename $subdir` directory. Give -"
                print "       cd $homedir/`dirname $subdir` "
                print "       sget `basename $subdir` "
                exit
        else
                # Now try to create CVS in local dir by sget
                (
                        cd "$homedir"
                        if [ "$subdir" = "." ]; then  # don't use dot, will mess up cvs
                                cvs -r checkout -A $tmpbb
                        else
                                cvs -r checkout -A "$subdir/$tmpbb"
                        fi
                )
        fi
fi

# Operate inside a sub-shell ...
(
        cd $homedir

        # Check if file does not exist....
        if [ ! -f "$subdir/$fname" ]; then
                # Try to get the file from CVS
                sget "$subdir/$fname"
                if [ ! -f "$subdir/$fname" ]; then
                        print "\nError: $subdir/$fname does NOT exist in CVS repository."
                        print "\nAborting $cmdname ......"
                        exit
                fi
        fi

        bkextn=cvs_sdelete_safety_backup
        \mv -f "$subdir/$fname" "$subdir/$fname.$bkextn" 

        cvs remove "$subdir/$fname"

        print "\nsdelete command removes the file from CVS repository"
        print "and archives the file in CVS Attic directory. In case"
        print "you need this file in future than contact your CVS administrator"
        print " "

        print "\nDone $cmdname. $cmdname successful"
        print "Run scommit on $homedir/$subdir/$fname to"
        print "make this change permanent"
        \mv -f "$subdir/$fname.$bkextn" "$subdir/$fname"
)