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git/test-svn-fe.c
Florian Achleitner 8e43a1d010 remote-svn: add incremental import
Search for a note attached to the ref to update and read it's
'Revision-number:'-line. Start import from the next svn revision.

If there is no next revision in the svn repo, svnrdump terminates with
a message on stderr an non-zero return value. This looks a little
weird, but there is no other way to know whether there is a new
revision in the svn repo.

On the start of an incremental import, the parent of the first commit
in the fast-import stream is set to the branch name to update. All
following commits specify their parent by a mark number. Previous mark
files are currently not reused.

Signed-off-by: Florian Achleitner <florian.achleitner.2.6.31@gmail.com>
Acked-by: David Michael Barr <b@rr-dav.id.au>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2012-10-07 14:10:17 -07:00

52 lines
1.3 KiB
C

/*
* test-svn-fe: Code to exercise the svn import lib
*/
#include "git-compat-util.h"
#include "vcs-svn/svndump.h"
#include "vcs-svn/svndiff.h"
#include "vcs-svn/sliding_window.h"
#include "vcs-svn/line_buffer.h"
static const char test_svnfe_usage[] =
"test-svn-fe (<dumpfile> | [-d] <preimage> <delta> <len>)";
static int apply_delta(int argc, char *argv[])
{
struct line_buffer preimage = LINE_BUFFER_INIT;
struct line_buffer delta = LINE_BUFFER_INIT;
struct sliding_view preimage_view = SLIDING_VIEW_INIT(&preimage, -1);
if (argc != 5)
usage(test_svnfe_usage);
if (buffer_init(&preimage, argv[2]))
die_errno("cannot open preimage");
if (buffer_init(&delta, argv[3]))
die_errno("cannot open delta");
if (svndiff0_apply(&delta, (off_t) strtoull(argv[4], NULL, 0),
&preimage_view, stdout))
return 1;
if (buffer_deinit(&preimage))
die_errno("cannot close preimage");
if (buffer_deinit(&delta))
die_errno("cannot close delta");
strbuf_release(&preimage_view.buf);
return 0;
}
int main(int argc, char *argv[])
{
if (argc == 2) {
if (svndump_init(argv[1]))
return 1;
svndump_read(NULL, "refs/heads/master", "refs/notes/svn/revs");
svndump_deinit();
svndump_reset();
return 0;
}
if (argc >= 2 && !strcmp(argv[1], "-d"))
return apply_delta(argc, argv);
usage(test_svnfe_usage);
}