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 sedit
# Program to check out the file from CVS read/write mode with locking
# 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 $fname
# play an important role. For example, sample values can be like
# HOME=/home/aldev, subdir=myproject/src CVSROOT=/home/cvsroot
# and fname=foo.cpp
# Caution: Put double-quotes to protect the variables having
# spaces, like "$HOME/$subdir" if subdir is 'some foo.cpp'
cmdname=`basename $0`
Usage()
{
# print "\nUsage: $cmdname [-r revision_number] [-F] <filename>"
# print "The options -r, -F are optional "
# print "The option -F is FORCE edit even if file is "
# print "locked by another developer"
print "\nUsage: $cmdname [-r revision_number] <filename>"
print "The options -r are optional "
print "For example - "
print " $cmdname -r 1.1 foo.cpp"
print " $cmdname foo.cpp "
# print " $cmdname -F foo.cpp "
print " "
}
# Command getopt will not supported in next major release.
# Use getopts instead.
#while getopts r:F ii
while getopts r: ii
do
case $ii in
r) FLAG1=$ii; OARG1="$OPTARG";;
# F) FLAG2=$ii; OARG2="$OPTARG";;
?) Usage; exit 2;;
esac
done
shift ` expr $OPTIND - 1 `
#echo FLAG1 = $FLAG1 , OARG1 = $OARG1
if [ $# -lt 1 ]; then
Usage
exit
fi
homedir=` echo $HOME | cut -f1 -d' ' `
if [ "$homedir" = "" ]; then
print "\nError: \$HOME is not set!!\n"
exit
fi
bkextn=sedit_bak
cur_dir=`pwd`
#echo $cur_dir
len=${#homedir}
len=$(($len + 2))
#echo $len
subdir=` echo $cur_dir | cut -b $len-2000 `
tmpaa=`dirname $1`
if [ "$tmpaa" = "." ]; then
fname=$1
if [ "$subdir" = "" ]; then
subdir=$tmpaa
fi
else
fname=`basename $1`
if [ "$subdir" = "" ]; then
subdir=$tmpaa
else
subdir="$subdir/$tmpaa"
fi
fi
#echo "subdir is : " $subdir
#echo "fname is : " $fname
# If file is already checked out by another developer....
cvs_root=` echo $CVSROOT | cut -f1 -d' ' `
if [ "$cvs_root" = "" ]; then
print "\nError: \$CVSROOT is not set!!\n"
exit
fi
mkdir -p "$CVSROOT/$subdir/Locks" 2>/dev/null
if [ ! -e "$CVSROOT/$subdir/$fname,v" ]; then
print "\nError: File $fname does not exist in CVS repository!!\n"
exit
fi
# CVS directory in your local directory is required for all commands..
if [ ! -d "$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/$tmpbb"
fi
)
fi
fi
# Get the tip revision number of the file....
# Use tmpfile as the arg cannot be set inside the sub-shell
tmpfile=$homedir/sedit-lock.tmp
\rm -f $tmpfile 2>/dev/null
if [ "$FLAG1" = "" ]; then
(
cd $homedir
if [ "$subdir" = "." ]; then # don't use dot, will mess up cvs
cvs log $fname | head -6 | grep head: | awk '{print $2}' > $tmpfile
else
cvs log "$subdir/$fname" | head -6 | grep head: | awk '{print $2}' > $tmpfile
fi
)
OARG1=`cat $tmpfile`
\rm -f $tmpfile 2>/dev/null
fi
lockfile="$CVSROOT/$subdir/Locks/$fname-$OARG1"
#echo "lockfile is : " $lockfile
#if [ -e $lockfile -a "$FLAG2" = "" ]; then
if [ -e $lockfile ]; then
print "\nError: File $fname Revision $OARG1 already locked by another developer !!"
aa=` ls -l $lockfile | awk '{print "Locking developers unix login name is = " $3}' `
print $aa
print "That developer should do scommit OR sunlock to release the lock"
print " "
# print "You can also use -F option to force edit the file even if"
# print "the file is locked by another developer. But you must talk to"
# print "other developer to work concurrently on this file."
# print "For example - this option is useful if you work on a seperate"
# print "C++ function in the file which does not interfere with other"
# print "developer."
# print " "
exit
fi
# Get read-only copy now....
if [ ! -e "$HOME/$subdir/$fname" ]; then
(
cd $homedir
if [ "$subdir" = "." ]; then # don't use dot, will mess up cvs
cvs -r checkout $fname 1>/dev/null
else
cvs -r checkout "$subdir/$fname" 1>/dev/null
fi
)
fi
# Check if file already exists....
tmpaa="$HOME/$subdir/$fname"
if [ -f $tmpaa ]; then
user_perms=" "
group_perms=" "
other_perms=" "
user_perms=`ls -l $tmpaa | awk '{print $tmpaa }' | cut -b3-3 `
group_perms=`ls -l $tmpaa | awk '{print $tmpaa }' | cut -b6-6 `
other_perms=`ls -l $tmpaa | awk '{print $tmpaa }' | cut -b9-9 `
if [ "$user_perms" = "w" -o "$group_perms" = "w" \
-o "$other_perms" = "w" ]; then
print "\nError: The file is writable. Aborting $cmdname ......"
print " You must backup, scommit or delete file and"
print " try $cmdname again\n"
exit
fi
#print "\nNote: The file $tmpaa is read-only."
#print "Hence I am moving it to $tmpaa.$bkextn ....\n"
\mv -f $tmpaa $tmpaa.$bkextn
chmod 444 $tmpaa.$bkextn
elif [ -d $tmpaa ]; then
print "\nError: $tmpaa is a directory and NOT a file. Aborting $cmdname ....\n"
exit
fi
# Create subshell
print "\nNow getting the file $fname from CVS repository ...\n"
(
cd $homedir
# Use -A option to clear the sticky tag and to get
# the HEAD revision version
if [ "$FLAG1" = "" ]; then
if [ "$subdir" = "." ]; then # don't use dot, will mess up cvs
cvs -w checkout -A $fname
else
cvs -w checkout -A "$subdir/$fname"
fi
else
if [ "$subdir" = "." ]; then # don't use dot, will mess up cvs
cvs -w checkout -A -$FLAG1 $OARG1 $fname
else
cvs -w checkout -A -$FLAG1 $OARG1 "$subdir/$fname"
fi
fi
)
if [ -e "$HOME/$subdir/$fname" ]; then
# The lockfile is $CVSROOT/$subdir/Locks/$fname-$OARG1
touch $lockfile
fi
#pwd
print "\nDone $cmdname"
#print "\nTip (Usage): $cmdname <filename> \n"