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|
#! /usr/bin/perl -w
#
# $FreeBSD$
#
# This hack is to sanitise the results of what the user may have
# "done" while editing the commit log message.. :-) Peter Wemm.
#
# Note: this uses an enhancement to cvs's verifymsg functionality.
# Normally, the check is advisory only, the FreeBSD version reads
# back the file after the verifymsg file so that this script can
# make changes.
#
use strict;
############################################################
#
# Configurable options
#
############################################################
# These are the optional headers that can be filled at the end of
# each commit message. The associated value is a regular-expression
# that is used to type-check the entered value. If the match failed
# then the commit is rejected. (See rcstemplate).
my %HEADERS = (
"Reviewed by" => '.*',
"Submitted by" => '.*',
"Obtained from" => '.*',
"Approved by" => '.*',
"PR" => '.*',
"MFC after" => '\d+(?:\s+(?:days?|weeks?|months?))?'
);
#############################################################
#
# Main Body
#
############################################################
my $filename = shift;
die "Usage: logcheck filename\n" unless $filename;
# Read the log file in, stripping 'CVS:' lines and removing trailing
# white spaces.
open IN, "< $filename" or
die "logcheck: Cannot open for reading: $filename: $!\n";
my @log_in = map { s/^(.*?)\s*$/$1/; $1 } grep { !/^CVS:/ } <IN>;
close IN;
# Remove leading, trailing and duplicate blank lines.
my $i = 0;
while ($i < scalar(@log_in)) {
if ($log_in[$i] eq "" && $log_in[$i + 1] eq "") {
splice(@log_in, $i, 1);
next;
}
++$i;
}
shift @log_in unless $log_in[0];
# Filter out blank templated entries, and type check if necessary.
# (looking from the end of the commit message backwards)
my $j = scalar(@log_in) - 1;
my $error = 0;
while ($j >= 0 and my $header = $log_in[$j]) {
--$j;
if ($header =~ /^(.*?):\s*(.*)$/) {
my $header = $1;
my $value = $2;
my $pattern = $HEADERS{$header};
# Ignore unrecognised headers.
unless (defined($pattern)) {
### print "Warning: unknown template header: $header\n";
next;
}
# Filter out the template header if it's blank.
if ($value eq "") {
splice(@log_in, $j + 1, 1);
next;
}
# Type check the header
unless ($value =~ /^$pattern$/) {
print "Error: $header: should match /^$pattern\$/.\n";
++$error;
next;
}
} else {
### XXX
# We're here because we saw a line that didn't match
# a template header (no ':'). This could be a continuation
# line from the previous header, or the log message proper.
# We don't know, so run the risk of checking the last paragraph
# of the log message for headers.
next;
}
}
# Write the modified log file back out.
my $tmpfile = $filename . "tmp";
open OUT, "> $tmpfile" or
die "logcheck: Cannot open for writing: $tmpfile: $!\n";
print OUT map { "$_\n" } @log_in;
close OUT;
# Stop the commit if there was a problem with the template headers.
if ($error) {
print "There were $error errors in the template headers.\n";
print "Please fix the log message and commit again.\n";
print "A copy of your log message was saved in $tmpfile.\n";
exit 1;
}
# Nuke likely editor backups.
unlink "$filename.~";
unlink "$filename.bak";
# Overwrite the log message with our sanitised one. (See the comment
# block at the top of this script for an explaination of why.)
rename($tmpfile, $filename) or
die "logcheck: Could not rename $tmpfile to $filename: $!";
exit 0;
|
