I have got svn_all_diffs.pl working on perl for windows, thought it might be
useful to post it here. This script was useful to me for searching all
revisions of a file and I have added an svn cat of the original version to
help with this.
#!/usr/bin/perl -w
# svn_all_diffs.pl modified to work on windows by david wilcock. basically
ripped off solution on open(HANDLE, "-|") by Ian Brockbank at
http://svn.haxx.se/users/archive-2004-04/1280.shtml
# $HeadURL$
# $LastChangedDate$
# $LastChangedBy$
# $LastChangedRevision$
use strict;
use Carp;
use Getopt::Long 2.25;
use File::Temp 0.12 qw(tempdir tempfile);
# Process the command line options.
# Print the log message along with the modifications made in a
# particular revision.
my $opt_print_log_message;
GetOptions('log' => \$opt_print_log_message)
or &usage;
&usage("$0: too many arguments") if @ARGV > 1;
# If there is no file or directory specified on the command line, use
# the current working directory as a default path.
my $file_or_dir = @ARGV ? shift : '.';
unless (-e $file_or_dir)
{
die "$0: file or directory `$file_or_dir' does not exist.\n";
}
# Create a temporary directory for svn to work in.
my $temp_dir = $ENV{TMPDIR};
unless (defined $temp_dir and length $temp_dir) {
# Try the Windows standard environment variable
$temp_dir = $ENV{TEMP};
}
unless (defined $temp_dir and length $temp_dir) {
$temp_dir = '/tmp';
}
my $temp_template = "$temp_dir/svn_load_dirs_XXXXXXXXXX";
$temp_dir = tempdir($temp_template);
# Get the entire log for this file or directory. Parse the log into
# two separate lists. The first is a list of the revision numbers
# when this file or directory was modified. The second is a hash of
# log messages for each revision.
my @revisions;
my %log_messages;
{
my $current_revision;
foreach my $log_line (read_from_process('svn', 'log', $file_or_dir))
{
# Ignore any of the lines containing only -'s.
next if $log_line =~ /^-+$/;
if (my ($r) = $log_line =~ /^r(\d+)/)
{
$current_revision = $r;
$log_messages{$current_revision} = "";
push(@revisions, $r);
}
if (defined $current_revision)
{
$log_messages{$current_revision} .= "$log_line\n";
}
}
}
# Run all the diffs.
my $first_time = 1;
while (@revisions > 1)
{
my $new_rev = shift @revisions;
my $old_rev = $revisions[0];
if ($first_time) {
$first_time = 0;
}
&print_revision($new_rev);
my @diff = read_from_process('svn', 'diff',
"-r$old_rev:$new_rev", $file_or_dir);
if ($opt_print_log_message)
{
print $log_messages{$new_rev};
}
print join("\n", @diff, "\n");
}
# Print the log message for the last revision. There is no diff for
# this revision, because according to svn log, the file or directory
# did not exist previously.
{
my $last_revision = shift @revisions;
my @orig = read_from_process('svn', 'cat', "-r$last_revision",
$file_or_dir);
print "\n\nOriginal Content:\n\n";
print join("\n", @orig, "\n");
if ($opt_print_log_message)
{
&print_revision($last_revision);
print $log_messages{$last_revision};
}
}
exit 0;
sub usage
{
warn "@_\n" if @_;
die "usage: $0 [options] [file_or_dir]\n",
"Valid options:\n",
" -l [--log] : also show the log messages\n";
}
sub print_revision
{
my $revision = shift;
print "\n\n\nRevision $revision\n";
}
# Start a child process safely without using /bin/sh.
my $openfork_available = "MSWin32" ne $^O;
sub safe_read_from_pipe
{
unless (@_)
{
croak "$0: safe_read_from_pipe passed no arguments.\n";
}
print "Running @_\n";
if ($openfork_available)
{
my $pid = open(SAFE_READ, "-|");
unless (defined $pid)
{
die "$0: cannot fork: $!\n";
}
unless ($pid)
{
# child
open(STDERR, ">&STDOUT")
or die "$0: cannot dup STDOUT: $!\n";
exec(@_)
or die "$0: cannot exec '@_': $!\n";
}
}
else
{
# Redirect the comment into a temp file and use that to work around
# Windoze's (non-)handling of multi-line commands.
my @commandline = ();
my $command;
while ($command = shift)
{
if ("-m" eq $command)
{
my $comment = shift;
my ($handle, $tmpfile) = tempfile( DIR => $temp_dir);
print $handle $comment;
close($handle);
push(@commandline, "--file");
push(@commandline, $tmpfile);
}
else
{
if ($command =~ m"\n")
{
warn "$0: carriage return detected in command - may not
work\n";
}
push(@commandline, $command);
}
}
# Now do the pipe.
open(SAFE_READ, "@commandline |")
or die "$0: cannot pipe to command: $!\n";
}
# parent
my @output;
while (<SAFE_READ>)
{
chomp;
push(@output, $_);
}
close(SAFE_READ);
my $result = $?;
my $exit = $result >> 8;
my $signal = $result & 127;
my $cd = $result & 128 ? "with core dump" : "";
if ($signal or $cd)
{
warn "$0: pipe from `@_' failed $cd: exit=$exit signal=$signal\n";
}
if (wantarray)
{
return ($result, @output);
}
else
{
return $result;
}
}
# Use safe_read_from_pipe to start a child process safely and exit the
# script if the child failed for whatever reason.
sub read_from_process
{
unless (@_)
{
croak "$0: read_from_process passed no arguments.\n";
}
my ($status, @output) = &safe_read_from_pipe(@_);
if ($status)
{
die "$0: @_ failed with this output:\n", join("\n", @output), "\n";
}
else
{
return @output;
}
}
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Received on Tue Jan 16 18:16:23 2007