ikiwiki/doc/bugs/bzr_2.0_breaks_bzr_plugin.mdwn

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Version 2.0 of bzr seems to break the bzr plugin.
I traced this to the bzr_log method in the plugin, and patching that seems to fix it. The plugin just needs to parse the input little bit differently.
--liw
> Patch applied, [[done]] (but, it would be good if it could be tested with
> an older bzr, and it's a pity bzr's human-targeted log has to be parsed,
> I assume there is no machine-targeted version?) --[[Joey]]
From fb897114124e627fd3acf5af8e784c9a77419a81 Mon Sep 17 00:00:00 2001
From: Lars Wirzenius <liw@liw.fi>
Date: Sun, 4 Apr 2010 21:05:07 +1200
Subject: [PATCH] Fix bzr plugin to work with bzr 2.0.
The output of "bzr log" seems to have changed a bit, so we change the
parsing accordingly. This has not been tested with earlier versions of
bzr.
Several problems seemed to occur, all in the bzr_log subroutine:
1. The @infos list would contain an empty hash, which would confuse the
rest of the program.
2. This was because bzr_log would push an empty anonymous hash to the
list whenever it thought a new record would start.
3. However, a new record marker (now?) also happens at th end of bzr log
output.
4. Now we collect the record to a hash that gets pushed to the list only
if it is not empty.
5. Also, sometimes bzr log outputs "revno: 1234 [merge]", so we catch only
the revision number.
6. Finally, there may be non-headers at the of the output, so we ignore
those.
---
IkiWiki/Plugin/bzr.pm | 23 ++++++++++++++++-------
1 files changed, 16 insertions(+), 7 deletions(-)
diff --git a/IkiWiki/Plugin/bzr.pm b/IkiWiki/Plugin/bzr.pm
index 1ffdc23..e813331 100644
--- a/IkiWiki/Plugin/bzr.pm
+++ b/IkiWiki/Plugin/bzr.pm
@@ -73,28 +73,37 @@ sub bzr_log ($) {
my @infos = ();
my $key = undef;
+ my $hash = {};
while (<$out>) {
my $line = $_;
my ($value);
if ($line =~ /^message:/) {
$key = "message";
- $infos[$#infos]{$key} = "";
+ $$hash{$key} = "";
}
elsif ($line =~ /^(modified|added|renamed|renamed and modified|removed):/) {
$key = "files";
- unless (defined($infos[$#infos]{$key})) { $infos[$#infos]{$key} = ""; }
+ unless (defined($$hash{$key})) { $$hash{$key} = ""; }
}
elsif (defined($key) and $line =~ /^ (.*)/) {
- $infos[$#infos]{$key} .= "$1\n";
+ $$hash{$key} .= "$1\n";
}
elsif ($line eq "------------------------------------------------------------\n") {
+ if (keys %$hash) {
+ push (@infos, $hash);
+ }
+ $hash = {};
$key = undef;
- push (@infos, {});
}
- else {
+ elsif ($line =~ /: /) {
chomp $line;
- ($key, $value) = split /: +/, $line, 2;
- $infos[$#infos]{$key} = $value;
+ if ($line =~ /^revno: (\d+)/) {
+ $key = "revno";
+ $value = $1;
+ } else {
+ ($key, $value) = split /: +/, $line, 2;
+ }
+ $$hash{$key} = $value;
}
}
close $out;
--
1.7.0