From 41529bbce407fbf1a925cfbc7c1aa30064f66ae7 Mon Sep 17 00:00:00 2001
From: David Barr <david.barr@cordelta.com>
Date: Sat, 5 Mar 2011 13:30:23 +1100
Subject: vcs-svn: set up channel to read fast-import cat-blob response

Set up some plumbing: teach the svndump lib to pass a file descriptor
number to the fast_export lib, representing where cat-blob/ls
responses can be read from, and add a get_response_line helper
function to the fast_export lib to read a line from that file.

Unfortunately this means that svn-fe needs file descriptor 3 to be
redirected from somewhere (preferrably the cat-blob stream of a
fast-import backend); otherwise it will fail:

	$ svndump <path> | svn-fe
	fatal: cannot read from file descriptor 3: Bad file descriptor

For the moment, "svn-fe 3</dev/null" works as a workaround but it
will not work for very long.  A fast-import backend that can retrieve
old commits is needed in order to be able to fulfill svn
"Node-copyfrom-rev" requests that refer to revs from a previous run.

[jn: with new change description]

Based-on-patch-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: David Barr <david.barr@cordelta.com>
Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
---
 vcs-svn/svndump.c | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'vcs-svn/svndump.c')

diff --git a/vcs-svn/svndump.c b/vcs-svn/svndump.c
index e6d84bada5..e05a99d51f 100644
--- a/vcs-svn/svndump.c
+++ b/vcs-svn/svndump.c
@@ -14,6 +14,8 @@
 #include "obj_pool.h"
 #include "string_pool.h"
 
+#define REPORT_FILENO 3
+
 #define NODEACT_REPLACE 4
 #define NODEACT_DELETE 3
 #define NODEACT_ADD 2
@@ -367,6 +369,7 @@ int svndump_init(const char *filename)
 	if (buffer_init(&input, filename))
 		return error("cannot open %s: %s", filename, strerror(errno));
 	repo_init();
+	fast_export_init(REPORT_FILENO);
 	reset_dump_ctx(~0);
 	reset_rev_ctx(0);
 	reset_node_ctx(NULL);
@@ -377,6 +380,7 @@ int svndump_init(const char *filename)
 void svndump_deinit(void)
 {
 	log_reset();
+	fast_export_deinit();
 	repo_reset();
 	reset_dump_ctx(~0);
 	reset_rev_ctx(0);
@@ -390,6 +394,7 @@ void svndump_deinit(void)
 void svndump_reset(void)
 {
 	log_reset();
+	fast_export_reset();
 	buffer_reset(&input);
 	repo_reset();
 	reset_dump_ctx(~0);
-- 
cgit 1.2.3-korg