1 files changed, 51 insertions, 0 deletions
diff --git a/dbixs_rev.pl b/dbixs_rev.pl
new file mode 100644
index 0000000..9e83eb1
--- /dev/null
+++ b/dbixs_rev.pl
@@ -0,0 +1,51 @@
+#!perl -w
+use strict;
+
+my $dbixs_rev_file = "dbixs_rev.h";
+
+my $is_make_dist;
+my $svnversion;
+
+if (is_dbi_svn_dir(".")) {
+    $svnversion = `svnversion -n`;
+}
+elsif (is_dbi_svn_dir("..")) {
+    # presumably we're in a subdirectory because the user is doing a 'make dist'
+    $svnversion = `svnversion -n ..`;
+    $is_make_dist = 1;
+}
+else {
+    # presumably we're being run by an end-user because their file timestamps
+    # got messed up
+    print "Skipping regeneration of $dbixs_rev_file\n";
+    utime(time(), time(), $dbixs_rev_file); # update modification time
+    exit 0;
+}
+
+my @warn;
+die "Neither current directory nor parent directory are an svn working copy\n"
+    unless $svnversion and $svnversion =~ m/^\d+/;
+push @warn, "Mixed revision working copy ($svnversion:$1)"
+    if $svnversion =~ s/:(\d+)//;
+push @warn, "Code modified since last checkin"
+    if $svnversion =~ s/[MS]+$//;
+warn "$dbixs_rev_file warning: $_\n" for @warn;
+die "$0 failed\n" if $is_make_dist && @warn;
+
+write_header($dbixs_rev_file, DBIXS_REVISION => $svnversion, \@warn);
+
+sub write_header {
+    my ($file, $macro, $version, $comments_ref) = @_;
+    open my $fh, ">$file" or die "Can't open $file: $!\n";
+    unshift @$comments_ref, scalar localtime(time);
+    print $fh "/* $_ */\n" for @$comments_ref;
+    print $fh "#define $macro $version\n";
+    close $fh or die "Error closing $file: $!\n";
+    print "Wrote $macro $version to $file\n";
+}
+
+sub is_dbi_svn_dir {
+    my ($dir) = @_;
+    return (-d "$dir/.svn" && -f "$dir/MANIFEST.SKIP");
+}
+