Re: [PATCH 9/9] Add a sample user for the svndump library

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Hi Jonathan,

Jonathan Nieder wrote:
> NEEDSWORK: litters cwd with useless .bin files.
> But I hope it is enough to show the idea.

How do you propose we solve this? Maybe using a generic
$TEMP_DIRECTORY like /tmp in Unix and then getting rid of the files
after the export is complete?

> +QUIET_SUBDIR0 = +$(MAKE) -C # space to separate -C and subdir
> +QUIET_SUBDIR1 =

> +ifneq ($(findstring $(MAKEFLAGS),s),s)
> +ifndef V
> +       QUIET_CC      = @echo '   ' CC $@;
> +       QUIET_LINK    = @echo '   ' LINK $@;
> +       QUIET_SUBDIR0 = +@subdir=
> +       QUIET_SUBDIR1 = ;$(NO_SUBDIR) echo '   ' SUBDIR $$subdir; \
> +                       $(MAKE) $(PRINT_DIR) -C $$subdir
> +endif
> +endif

I saw this in the Git Makefile too, but I didn't understand the logic
behind it. Could you explain it to me?
Note: I couldn't understand most of the Makefile, so I just skipped it
when I found similar declarations in the Git Makefile.

> diff --git a/contrib/svn-fe/svn-fe.c b/contrib/svn-fe/svn-fe.c
> new file mode 100644
> index 0000000..d84dd4f
> --- /dev/null
> +++ b/contrib/svn-fe/svn-fe.c
> @@ -0,0 +1,43 @@
> +/*
> + * Parse and rearrange a svnadmin dump.
> + * Create the dump with:
> + * svnadmin dump --incremental -r<startrev>:<endrev> <repository> >outfile
> + *
> + * Copyright (C) 2010 David Barr <david.barr@xxxxxxxxxxxx>.
> + * All rights reserved.

That's a huge license header applies just to the trivial five-line
program, right? Is it necessary at all?

> +#include <stdlib.h>
> +#include "../../vcs-svn/svndump.h"

Inelegant. Why not include ../../vcs-svn in the path you're searching
for headers?

> +svnadmin dump --incremental REPO | svn-fe [url] | git fast-import

If the user doesn't have a clue about SVN, they won't know what REPO
is here: Without knowing anything about svnadmin, I'd naively try it
with a remote repository. Maybe include a note about having to mirror
a complete repository locally using svnsync (or otherwise) first?

> +Converts a textual representation of a Subversion repository into
> +input suitable for git-fast-import(1) and similar importers.

To be more specific, "Subversion dumpfile (version: 2)" from FILE(1).

-- Ram
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