From f163dbe381968d1ad2fc8fd13455e7b5fb03bdf5 Mon Sep 17 00:00:00 2001
From: ianmdlvl <ianmdlvl>
Date: Mon, 5 May 2003 16:39:10 +0000
Subject: [PATCH] first cut of gz support

---
 backup/backuplib.pl | 27 +++++++++++++++++++++------
 backup/full         | 21 ++++++++++++++++++++-
 debian/changelog    |  4 ++--
 3 files changed, 43 insertions(+), 9 deletions(-)

diff --git a/backup/backuplib.pl b/backup/backuplib.pl
index f8d7349..c2c7e81 100644
--- a/backup/backuplib.pl
+++ b/backup/backuplib.pl
@@ -140,22 +140,37 @@ sub readfsys ($) {
 # Parse a line from a filesystem definition file. We expect the line
 # to be in $tf.
 sub parsefsys () {
-    if ($tf =~ m,^(/\S*)\s+(\w+)$,) {
-        # Line of form '/file/system	dumptype'
+    my ($dopts,$dopt);
+    if ($tf =~ m,^(/\S*)\s+(\w+)([,0-9a-z]+)$,) {
+        # Line of form '/file/system	dumptype[,options]'
 	$atf= $1;
 	$tm= $2;
+	$dopts= $3;
 	$prefix= '<local>';
 	stat $atf or die "stat $atf: $!";
 	-d _ or die "not a dir: $atf";
 	$rstr= '';
-    } elsif ($tf =~ m,^(/\S*)\s+(\w+)\s+(\w+)$,) {
-        # Line of form '/file/system dumptype prefix'
-        # (used for remote backups, I think)
+    } elsif ($tf =~ m,^(/\S*)\s+(\w+)([,0-9a-z]+)\s+(\w+)$,) {
+        # Line of form '/file/system dumptype[,options] prefix'
+        # (used for remote backups)
 	$atf= $1;
 	$tm= $2;
-	$prefix= $3;
+	$dopts= $3;
+	$prefix= $4;
 	defined($prefix{$prefix}) or die "prefix $prefix in $tf ?\n";
 	$rstr= $prefix{$prefix}.' ';
+    } else {
+	die "fsys $tf ?";
+    }
+    undef %dopt;
+    foreach $dopt (split /\,/,$dopts) {
+	if (grep { $dopt eq $_ } qw(gz)) {
+	    $dopt{$dopt}= 'y';
+	} elsif ($dopt =~ m/\=/ && grep { $` eq $_ } qw(gz)) {
+	    $dopt{$`}= $';
+	} else {
+	    die "unknown option $dopt";
+	}
     }
 }
 
diff --git a/backup/full b/backup/full
index 388270f..5d210af 100755
--- a/backup/full
+++ b/backup/full
@@ -166,6 +166,22 @@ for $tf (@fsys) {
     pipe(FINDOR,FINDOW) or die $!;
     pipe(DUMPOR,DUMPOW) or die $!;
     pipe(TEEOR,TEEOW) or die $!;
+    $bufir='TEEOR';
+
+    if ($dopt{'gz'} eq 'y') {
+	$gz= '3';
+    } elsif ($dopt{'gz'} =~ m/^\d$/) {
+	$gz= $dopt{'gz'};
+    } elsif (defined $dopt{'gz'}) {
+	die "$tf bad gz";
+    } else {
+	$gz= 0;
+    }
+    if ($gz) {
+	$bufir='GZOR';
+	pipe(GZOR,GZOW) or die $!;
+    }
+    
     pipe(BUFOR,BUFOW) or die $!;
     parsefsys();
     
@@ -194,7 +210,10 @@ for $tf (@fsys) {
     startprocess '<p','>>this-md5sums','md5sum';
     startprocess $dumpin,'>&DUMPOW',$rstr.$dumpcmd;
     startprocess '<&DUMPOR','>&TEEOW','tee p';
-    startprocess '<&TEEOR','>&BUFOW','writebuffer';
+    if ($gz) {
+	startprocess '<&TEEOR','>&GZOW','gzip -v$gz';
+    }
+    startprocess '<&$bufir','>&BUFOW','writebuffer';
     startprocess '<&BUFOR','>/dev/null'
 	,"dd ibs=$softblocksizebytes obs=$blocksizebytes of=$ntape";
     closepipes();
diff --git a/debian/changelog b/debian/changelog
index bd0438b..90b16ec 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,8 +1,8 @@
-chiark-utils (3.0.4) unstable; urgency=low
+chiark-utils (3.0.3.99) unstable; urgency=low
 
   * chiark-backup: full dumps have tapedesc in TAPEID
 
- --
+ -- Ian Jackson <ian@davenant.greenend.org.uk>  Mon,  5 May 2003 17:09:40 +0100
 
 chiark-utils (3.0.3) unstable; urgency=low
 
-- 
2.30.2