Make autoversioning/spec gen work better.

issue #98 is about how our specfiles for rc's aren't upgradeable.
Now they should be.

1 files changed, 59 insertions, 0 deletions

diff --git a/version.pl b/version.pl
new file mode 100755
index 0000000..6f08faf
--- /dev/null
+++ b/version.pl
@@ -0,0 +1,59 @@
+#!/usr/bin/perl
+# If you think this is stupid/overkill, blame dormando
+
+use warnings;
+use strict;
+
+my $version = `git describe`;
+chomp $version;
+# Test the various versions.
+#my $version = 'foob';
+#my $version = '1.4.2-30-gf966dba';
+#my $version = '1.4.3-rc1';
+#my $version = '1.4.3';
+unless ($version =~ m/^\d+\.\d+\.\d+/) {
+    write_file('version.m4', "m4_define([VERSION_NUMBER], [UNKNOWN])\n");
+    exit;
+}
+
+$version =~ s/-/_/g;
+write_file('version.m4', "m4_define([VERSION_NUMBER], [$version])\n");
+my ($VERSION, $FULLVERSION, $RELEASE);
+
+if ($version =~ m/^(\d+\.\d+\.\d+)_rc(\d+)$/) {
+    $VERSION = $1;
+    $FULLVERSION = $version;
+    $RELEASE = '0.1.rc' . $2;
+} elsif ($version =~ m/^(\d+\.\d+\.\d+)_(.+)$/) {
+    $VERSION = $1;
+    $FULLVERSION = $version;
+    $RELEASE = '1.' . $2;
+} elsif ($version =~ m/^(\d+\.\d+\.\d+)$/) {
+    $VERSION = $1;
+    $FULLVERSION = $version;
+    $RELEASE = '1';
+}
+
+my $spec = read_file('memcached.spec.in');
+$spec =~ s/\@VERSION\@/$VERSION/gm;
+$spec =~ s/\@FULLVERSION\@/$FULLVERSION/gm;
+$spec =~ s/\@RELEASE\@/$RELEASE/gm;
+
+write_file('memcached.spec', $spec);
+
+sub write_file {
+    my $file = shift;
+    my $data = shift;
+    open(my $fh, "> $file") or die "Can't open $file: $!";
+    print $fh $data;
+    close($fh);
+}
+
+sub read_file {
+    my $file = shift;
+    local $/ = undef;
+    open(my $fh, "< $file") or die "Can't open $file: $!";
+    my $data = <$fh>;
+    close($fh);
+    return $data;
+}