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|
eval '(exit $?0)' && eval 'exec perl -w "$0" ${1+"$@"}'
& eval 'exec perl -w "$0" $argv:q'
if 0;
# An hook script to check the commit log message.
# Called by "git commit" with one argument, the name of the file
# that has the commit message. The hook should exit with non-zero
# status after issuing an appropriate message if it wants to stop the
# commit. The hook is allowed to edit the commit message file.
#
# To enable this hook, copy it to "~/.git/hooks/commit-msg".
#
# This script is based on the one from GNU coreutils.
use strict;
use warnings;
(my $ME = $0) =~ s|.*/||;
my $editor = $ENV{EDITOR} || 'vi';
$ENV{PATH} = '/bin:/usr/bin';
# Rewrite the $LOG_FILE (old contents in @$LINE_REF) with an additional
# commented diagnostic "# $ERR" line at the top.
sub rewrite($$$)
{
my ($log_file, $err, $line_ref) = @_;
local *LOG;
open LOG, '>', $log_file
or die "$ME: $log_file: failed to open for writing: $!";
print LOG "# $err";
print LOG @$line_ref;
close LOG
or die "$ME: $log_file: failed to rewrite: $!\n";
}
sub re_edit($)
{
my ($log_file) = @_;
warn "Interrupt (Ctrl-C) to abort...\n";
system 'sh', '-c', "$editor $log_file";
($? & 127) || ($? >> 8)
and die "$ME: $log_file: the editor ($editor) failed, aborting\n";
}
# Given a $LOG_FILE name and a \@LINE buffer,
# read the contents of the file into the buffer and analyze it.
# If the log message passes muster, return the empty string.
# If not, return a diagnostic.
sub check_msg($$)
{
my ($log_file, $line_ref) = @_;
local *LOG;
open LOG, '<', $log_file
or return "failed to open for reading: $!";
@$line_ref = <LOG>;
close LOG;
my @line = @$line_ref;
chomp @line;
# Don't filter out blank or comment lines; git does that already,
# and if we were to ignore them here, it could lead to committing
# with lines that start with "#" in the log.
# Filter out leading blank and comment lines.
# while (@line && $line[0] =~ /^(?:#.*|[ \t]*)$/) { shift @line; }
# Filter out blank and comment lines at EOF.
# while (@line && $line[$#line] =~ /^(?:#.*|[ \t]*)$/) { pop @line; }
@line == 0
and return 'no log message';
# The first line should not be too short
8 < length $line[0] || return 'summary line too short';
# The first line should not start with an asterisk or a hash sign.
# An asterisk might indicate that a change entry was started right
# at the first line.
$line[0] =~ /^[*#]/ && return "summary line starts with an * or #";
# Second line should be blank or not present.
2 <= @line && length $line[1]
and return 'second line must be empty';
# Limit line length to allow for the ChangeLog's leading TAB.
foreach my $line (@line)
{
72 < length $line && $line =~ /^[^#]/
and return 'line longer than 72 characters';
}
return '';
}
{
@ARGV == 1
or die;
my $log_file = $ARGV[0];
while (1)
{
my @line;
my $err = check_msg $log_file, \@line;
$err eq ''
and last;
$err = "$ME: $err\n";
warn $err;
exit 1;
# Insert the diagnostic as a comment on the first line of $log_file.
#rewrite $log_file, $err, \@line;
#re_edit $log_file;
#
## Stop if our parent is killed.
#getppid() == 1
# and last;
}
}
# Local Variables:
# mode: perl
# End:
|
