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|
#!/usr/local/bin/perl -w
#
#
# Perl filter to handle pre-commit checking of files. This program
# records the last directory where commits will be taking place for
# use by the log_accumulate script. For new file, it forcing the
# existence of a RCS "Id" keyword in the first ten lines of the file.
# For existing files, it checks version number in the "Id" line to
# prevent losing changes because an old version of a file was copied
# into the direcory.
#
# Possible future enhancements:
#
#
# Check for cruft left by unresolved conflicts. Search for
# "^<<<<<<<$", "^-------$", and "^>>>>>>>$".
#
# Look for a copyright and automagically update it to the
# current year.
#
# Contributed by David Hampton <hampton@cisco.com>
#
############################################################
#
# Configurable options
#
############################################################
#
# Check each file (except dot files) for an RCS "Id" keyword.
#
$check_id = 1;
#
# Record the directory for later use by the log_accumulate stript.
#
$record_directory = 1;
############################################################
#
# Constants
#
############################################################
$LAST_FILE = "/tmp/#cvs.lastdir";
$ENTRIES = "CVS/Entries";
$NoId = "
%s - Does not contain a line with the keyword \"Id:\".
Please see the template files for an example.\n";
# Protect string from substitution by RCS.
$NoName = "
%s - The ID line should contain only \"\$\I\d\:\ \$\" for a newly created file.\n";
$BadName = "
%s - The file name '%s' in the ID line does not match
the actual filename.\n";
$BadVersion = "
%s - How dare you!! You replaced your copy of the file '%s',
which was based upon version %s, with an %s version based
upon %s. Please move your '%s' out of the way, perform an
update to get the current version, and them merge your changes
into that file.\n";
############################################################
#
# Subroutines
#
############################################################
sub write_line {
local($filename, $line) = @_;
open(FILE, ">$filename") || die("Cannot open $filename, stopped");
print(FILE $line, "\n");
close(FILE);
}
sub check_version {
local($i, $id, $rname, $version);
local($filename, $cvsversion) = @_;
open(FILE, $filename) || die("Cannot open $filename, stopped");
for ($i = 1; $i < 10; $i++) {
$pos = -1;
last if eof(FILE);
$line = <FILE>;
$pos = index($line, "Id: ");
last if ($pos >= 0);
}
if ($pos == -1) {
printf($NoId, $filename);
return(1);
}
($id, $rname, $version) = split(' ', substr($line, $pos));
if ($cvsversion{$filename} == 0) {
if ($rname ne "\$") {
printf($NoName, $filename);
return(1);
}
return(0);
}
if ($rname ne "$filename,v") {
printf($BadName, $filename, substr($rname, 0, length($rname)-2));
return(1);
}
if ($cvsversion{$filename} < $version) {
printf($BadVersion, $filename, $filename, $cvsversion{$filename},
"newer", $version, $filename);
return(1);
}
if ($cvsversion{$filename} > $version) {
printf($BadVersion, $filename, $filename, $cvsversion{$filename},
"older", $version, $filename);
return(1);
}
return(0);
}
#############################################################
#
# Main Body
#
############################################################
$id = getpgrp();
#print("ARGV - ", join(":", @ARGV), "\n");
#print("id - ", id, "\n");
#
# Suck in the Entries file
#
open(ENTRIES, $ENTRIES) || die("Cannot open $ENTRIES.\n");
while (<ENTRIES>) {
local($filename, $version) = split('/', substr($_, 1));
$cvsversion{$filename} = $version;
}
#
# Now check each file name passed in, except for dot files. Dot files
# are considered to be administrative files by this script.
#
if ($check_id != 0) {
$failed = 0;
$directory = $ARGV[0];
shift @ARGV;
foreach $arg (@ARGV) {
next if (index($arg, ".") == 0);
$failed += &check_version($arg);
}
if ($failed) {
print "\n";
exit(1);
}
}
#
# Record this directory as the last one checked. This will be used
# by the log_accumulate script to determine when it is processing
# the final directory of a multi-directory commit.
#
if ($record_directory != 0) {
&write_line("$LAST_FILE.$id", $directory);
}
exit(0);
|
