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Diffstat (limited to 'contrib/cvs/contrib/rcslock.in')
| -rwxr-xr-x | contrib/cvs/contrib/rcslock.in | 235 |
1 files changed, 235 insertions, 0 deletions
diff --git a/contrib/cvs/contrib/rcslock.in b/contrib/cvs/contrib/rcslock.in new file mode 100755 index 0000000..e17356b --- /dev/null +++ b/contrib/cvs/contrib/rcslock.in @@ -0,0 +1,235 @@ +#! @PERL@ +# -*-Perl-*- + +# Author: John Rouillard (rouilj@cs.umb.edu) +# Supported: Yeah right. (Well what do you expect for 2 hours work?) +# Blame-to: rouilj@cs.umb.edu +# Complaints to: Anybody except Brian Berliner, he's blameless for +# this script. +# Acknowlegements: The base code for this script has been acquired +# from the log.pl script. + +# rcslock.pl - A program to prevent commits when a file to be ckecked +# in is locked in the repository. + +# There are times when you need exclusive access to a file. This +# often occurs when binaries are checked into the repository, since +# cvs's (actually rcs's) text based merging mechanism won't work. This +# script allows you to use the rcs lock mechanism (rcs -l) to make +# sure that no changes to a repository are able to be committed if +# those changes would result in a locked file being changed. + +# WARNING: +# This script will work only if locking is set to strict. +# + +# Setup: +# Add the following line to the commitinfo file: + +# ALL /local/location/for/script/lockcheck [options] + +# Where ALL is replaced by any suitable regular expression. +# Options are -v for verbose info, or -d for debugging info. +# The %s will provide the repository directory name and the names of +# all changed files. + +# Use: +# When a developer needs exclusive access to a version of a file, s/he +# should use "rcs -l" in the repository tree to lock the version they +# are working on. CVS will automagically release the lock when the +# commit is performed. + +# Method: +# An "rlog -h" is exec'ed to give info on all about to be +# committed files. This (header) information is parsed to determine +# if any locks are outstanding and what versions of the file are +# locked. This filename, version number info is used to index an +# associative array. All of the files to be committed are checked to +# see if any locks are outstanding. If locks are outstanding, the +# version number of the current file (taken from the CVS/Entries +# subdirectory) is used in the key to determine if that version is +# locked. If the file being checked in is locked by the person doing +# the checkin, the commit is allowed, but if the lock is held on that +# version of a file by another person, the commit is not allowed. + +$ext = ",v"; # The extension on your rcs files. + +$\="\n"; # I hate having to put \n's at the end of my print statements +$,=' '; # Spaces should occur between arguments to print when printed + +# turn off setgid +# +$) = $(; + +# +# parse command line arguments +# +require 'getopts.pl'; + +&Getopts("vd"); # verbose or debugging + +# Verbose is useful when debugging +$opt_v = $opt_d if defined $opt_d; + +# $files[0] is really the name of the subdirectory. +# @files = split(/ /,$ARGV[0]); +@files = @ARGV[0..$#ARGV]; +$cvsroot = $ENV{'CVSROOT'}; + +# +# get login name +# +$login = getlogin || (getpwuid($<))[0] || "nobody"; + +# +# save the current directory since we have to return here to parse the +# CVS/Entries file if a lock is found. +# +$pwd = `/bin/pwd`; +chop $pwd; + +print "Starting directory is $pwd" if defined $opt_d ; + +# +# cd to the repository directory and check on the files. +# +print "Checking directory ", $files[0] if defined $opt_v ; + +if ( $files[0] =~ /^\// ) +{ + print "Directory path is $files[0]" if defined $opt_d ; + chdir $files[0] || die "Can't change to repository directory $files[0]" ; +} +else +{ + print "Directory path is $cvsroot/$files[0]" if defined $opt_d ; + chdir ($cvsroot . "/" . $files[0]) || + die "Can't change to repository directory $files[0] in $cvsroot" ; +} + + +# Open the rlog process and apss all of the file names to that one +# process to cut down on exec overhead. This may backfire if there +# are too many files for the system buffer to handle, but if there are +# that many files, chances are that the cvs repository is not set up +# cleanly. + +print "opening rlog -h @files[1..$#files] |" if defined $opt_d; + +open( RLOG, "rlog -h @files[1..$#files] |") || die "Can't run rlog command" ; + +# Create the locks associative array. The elements in the array are +# of two types: +# +# The name of the RCS file with a value of the total number of locks found +# for that file, +# or +# +# The name of the rcs file concatenated with the version number of the lock. +# The value of this element is the name of the locker. + +# The regular expressions used to split the rcs info may have to be changed. +# The current ones work for rcs 5.6. + +$lock = 0; + +while (<RLOG>) +{ + chop; + next if /^$/; # ditch blank lines + + if ( $_ =~ /^RCS file: (.*)$/ ) + { + $curfile = $1; + next; + } + + if ( $_ =~ /^locks: strict$/ ) + { + $lock = 1 ; + next; + } + + if ( $lock ) + { + # access list: is the line immediately following the list of locks. + if ( /^access list:/ ) + { # we are done getting lock info for this file. + $lock = 0; + } + else + { # We are accumulating lock info. + + # increment the lock count + $locks{$curfile}++; + # save the info on the version that is locked. $2 is the + # version number $1 is the name of the locker. + $locks{"$curfile" . "$2"} = $1 + if /[ ]*([a-zA-Z._]*): ([0-9.]*)$/; + + print "lock by $1 found on $curfile version $2" if defined $opt_d; + + } + } +} + +# Lets go back to the starting directory and see if any locked files +# are ones we are interested in. + +chdir $pwd; + +# fo all of the file names (remember $files[0] is the directory name +foreach $i (@files[1..$#files]) +{ + if ( defined $locks{$i . $ext} ) + { # well the file has at least one lock outstanding + + # find the base version number of our file + &parse_cvs_entry($i,*entry); + + # is our version of this file locked? + if ( defined $locks{$i . $ext . $entry{"version"}} ) + { # if so, it is by us? + if ( $login ne ($by = $locks{$i . $ext . $entry{"version"}}) ) + {# crud somebody else has it locked. + $outstanding_lock++ ; + print "$by has file $i locked for version " , $entry{"version"}; + } + else + { # yeah I have it locked. + print "You have a lock on file $i for version " , $entry{"version"} + if defined $opt_v; + } + } + } +} + +exit $outstanding_lock; + + +### End of main program + +sub parse_cvs_entry +{ # a very simple minded hack at parsing an entries file. +local ( $file, *entry ) = @_; +local ( @pp ); + + +open(ENTRIES, "< CVS/Entries") || die "Can't open entries file"; + +while (<ENTRIES>) + { + if ( $_ =~ /^\/$file\// ) + { + @pp = split('/'); + + $entry{"name"} = $pp[1]; + $entry{"version"} = $pp[2]; + $entry{"dates"} = $pp[3]; + $entry{"name"} = $pp[4]; + $entry{"name"} = $pp[5]; + $entry{"sticky"} = $pp[6]; + return; + } + } +} |
