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#!/usr/bin/perl
# Generate a ChangeLog file from a CVS log.
# Written by Robert Krawitz <rlk@alum.mit.edu>
# This code is in the public domain and may be used
# for any purpose.
%logmsgs = (); # Index by date, time, and author
%fileversions = ();
$skipme = 0;
@cvsdirs=`find . -type d -name CVS -print`;
map { chomp; s,^\./,, } @cvsdirs;
foreach $d (@cvsdirs) {
if (open ENTRIES, "$d/Entries") {
local ($rootdir) = $d;
$rootdir =~ s/CVS$//;
while (<ENTRIES>) {
local ($type, $file, $version, @junk) = split /\//;
if ($type eq "") {
$file = "$rootdir$file";
$fileversions{$file} = $version;
}
}
close ENTRIES;
}
}
sub compare_versions
{
# vw: version of the working file
# vl: version from the log
# The idea is that we want versions on the current branch, on branches
# leading to the current branch, and on the root prior to the current
# branch.
#
# Example: the current file is 1.5.12.2.4.3
#
# We want versions:
# 1.1
# 1.2
# 1.3
# 1.4
# 1.5
# 1.5.12.1
# 1.5.12.2
# 1.5.12.2.4.1
# 1.5.12.2.4.2
# 1.5.12.2.4.3
#
# We look at the numbers in pairs. The first number in each pair is
# the branch number; the second number is the version on the branch.
# The pairs are of the form (B, V).
#
# If the number of components in the log version is greater than the
# number of components in the working version, we aren't interested.
# This file cannot be a predecessor of the working version; it is
# either a branch off the working version, or it is an entirely different
# branch.
#
# We next iterate over all pairs in the log version. The following must
# be true for all pairs:
#
# Bw = Bl
# Vw >= Vl
#
# Note that there's no problem if the number of components in the
# working version exceeds the number of components in the log version.
#
# There is a special case: If the working version doesn't exist at all,
# we return true if the log version is on the mainline. This lets us
# see log messages from files that have been deleted.
my ($vw, $vl) = @_;
if ($vw eq "") {
return 2;
}
my (@vvw) = split /\./, $vw;
my (@vvl) = split /\./, $vl;
if ($#vvl > $#vvw) {
return 3;
}
my ($i);
for ($i = 0; $i < $#vvl; $i += 2) {
my ($bl) = $vvl[$i];
my ($vl) = $vvl[$i + 1];
my ($bw) = $vvw[$i];
my ($vw) = $vvw[$i + 1];
if ($bw != $bl || $vw < $vl) {
return 0;
}
}
return 1;
}
while (<>) {
if (/^Working file: /) {
chomp;
($ignore, $ignore, $currentfile) = split;
while (<>) {
if (/^----------------------------$/) {
last;
}
}
next;
} elsif (/^----------------------------$/) {
next;
} elsif (/^revision /) {
($ignore, $revision) = split;
my ($check) =&compare_versions($fileversions{$currentfile}, $revision);
#
# Special case -- if a file is not in the current sandbox, but is
# at top level, log it; otherwise if it is not in the current
# sandbox, don't log it.
#
if (($check == 2 && !($currentfile =~ /\//) &&
($currentfile =~ /\.[chly]$/)) ||
$check == 1) {
$skipme = 0;
} else {
$skipme = 1;
}
} elsif (/^date: /) {
($ignore, $date, $time, $ignore, $author, $ignore, $ignore,
$ignore, $plus, $minus, $ignore) = split;
# $time =~ s/[0-9]:[0-9][0-9];$//;
# $time =~ s/[0-9][0-9];$//;
$author =~ s/;$//;
$body = "";
$firstline = 1;
while (<>) {
if (/^----------------------------$/) {
last;
} elsif (/^=============================================================================$/) {
last;
} elsif ($firstline && /^branches:([ \t]+[0-9]+(\.[0-9]+)+;)+$/) {
next;
} else {
$body .= $_;
$firstline = 0;
}
}
$junkbody = $body;
$junkbody =~ s/\s//g;
$junkbody .= "x";
$datetimeauthor = "$date $time $author $junkbody $currentfile $revision";
if ($skipme == 0) {
$logmsgs{$datetimeauthor} = $body;
$plus{$datetimeauthor} = $plus;
$minus{$datetimeauthor} = $minus;
}
} # Other junk we ignore
}
$prevmsg="";
$header="";
@fileinfo = ();
@chlog = reverse sort keys %logmsgs;
foreach $_ (@chlog) {
($date, $time, $author, $junk, $file, $revision) = split;
$date =~ s,/,-,g;
$msg = $logmsgs{$_};
if ($prevmsg eq $msg) {
push @fileinfo, "\t\t$file ($revision) ($plus{$_} $minus{$_})\n";
} else {
if ($prevmsg ne "" || $#fileinfo >= 0) {
print $header;
$filestuff = join "", sort @fileinfo;
$filestuff =~ s/\t/\tFiles:/;
print "$filestuff\n";
$prevmsg =~ s/^/\t/g;
$prevmsg =~ s/\n/\n\t/g;
$prevmsg =~ s/[ \t]+\n/\n/g;
$prevmsg =~ s/[ \t]+$//g;
print "$prevmsg\n";
}
$header = "$date\t<$author\@sourceforge.net>\n\n";
$prevmsg = $msg;
@fileinfo = ();
push @fileinfo, "\t\t$file ($revision) ($plus{$_} $minus{$_})\n";
}
}
if ($prevmsg ne "" or $fileinfo ne "") {
print "$date\t<$author\@sourceforge.net>\n\n";
$filestuff = join "", sort @fileinfo;
$filestuff =~ s/\t/\tFiles:/;
print "$filestuff\n";
$prevmsg =~ s/^/\t/g;
$prevmsg =~ s/\n/\n\t/g;
$prevmsg =~ s/[ \t]+\n/\n/g;
$prevmsg =~ s/[ \t]+$//g;
print "$prevmsg\n";
}
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