Re: [PATCH v7 09/16] Allow reading svn dumps from files via file:// urls

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Florian Achleitner <florian.achleitner.2.6.31@xxxxxxxxx> writes:

> For testing as well as for importing large, already available dumps,
> it's useful to bypass svnrdump and replay the svndump from a file
> directly.
>
> Add support for file:// urls in the remote url, e.g.
>
>   svn::file:///path/to/dump
>
> When the remote helper finds an url starting with file:// it tries to
> open that file instead of invoking svnrdump.
>
> Signed-off-by: Florian Achleitner <florian.achleitner.2.6.31@xxxxxxxxx>
> Signed-off-by: Junio C Hamano <gitster@xxxxxxxxx>
> ---
>  remote-testsvn.c |   55 +++++++++++++++++++++++++++++++++++-------------------
>  1 file changed, 36 insertions(+), 19 deletions(-)
>
> diff --git a/remote-testsvn.c b/remote-testsvn.c
> index ebe803b..2b9d151 100644
> --- a/remote-testsvn.c
> +++ b/remote-testsvn.c
> @@ -9,6 +9,7 @@
>  #include "argv-array.h"
>  
>  static const char *url;
> +static int dump_from_file;
>  static const char *private_ref;
>  static const char *remote_ref = "refs/heads/master";
>  
> @@ -53,29 +54,38 @@ static int cmd_import(const char *line)
>  	struct argv_array svndump_argv = ARGV_ARRAY_INIT;
>  	struct child_process svndump_proc;
>  
> -	memset(&svndump_proc, 0, sizeof(struct child_process));
> -	svndump_proc.out = -1;
> -	argv_array_push(&svndump_argv, "svnrdump");
> -	argv_array_push(&svndump_argv, "dump");
> -	argv_array_push(&svndump_argv, url);
> -	argv_array_pushf(&svndump_argv, "-r%u:HEAD", startrev);
> -	svndump_proc.argv = svndump_argv.argv;
> -
> -	code = start_command(&svndump_proc);
> -	if (code)
> -		die("Unable to start %s, code %d", svndump_proc.argv[0], code);
> -	dumpin_fd = svndump_proc.out;
> -
> +	if (dump_from_file) {
> +		dumpin_fd = open(url, O_RDONLY);
> +		if(dumpin_fd < 0) {
> +			die_errno("Couldn't open svn dump file %s.", url);
> +		}
> +	}
> +	else {
> +		memset(&svndump_proc, 0, sizeof(struct child_process));


Style:

	if (dump_from_file) {
		dumpin_fd = open(url, O_RDONLY);
		if (dumpin_fd < 0)
                	die_errno("Couldn't...", url);
	} else {
        	memset(&svndump_proc, ...);
		...
	}

> +		svndump_proc.out = -1;
> +		argv_array_push(&svndump_argv, "svnrdump");
> +		argv_array_push(&svndump_argv, "dump");
> +		argv_array_push(&svndump_argv, url);
> +		argv_array_pushf(&svndump_argv, "-r%u:HEAD", startrev);
> +		svndump_proc.argv = svndump_argv.argv;
> +
> +		code = start_command(&svndump_proc);
> +		if (code)
> +			die("Unable to start %s, code %d", svndump_proc.argv[0], code);
> +		dumpin_fd = svndump_proc.out;
> +	}
>  	svndump_init_fd(dumpin_fd, STDIN_FILENO);
>  	svndump_read(url, private_ref);
>  	svndump_deinit();
>  	svndump_reset();
>  
>  	close(dumpin_fd);
> -	code = finish_command(&svndump_proc);
> -	if (code)
> -		warning("%s, returned %d", svndump_proc.argv[0], code);
> -	argv_array_clear(&svndump_argv);
> +	if(!dump_from_file) {

Style:

	if (!dump_from_file) {

> +		code = finish_command(&svndump_proc);
> +		if (code)
> +			warning("%s, returned %d", svndump_proc.argv[0], code);
> +		argv_array_clear(&svndump_argv);
> +	}
>  
>  	return 0;
>  }
> @@ -149,8 +159,15 @@ int main(int argc, const char **argv)
>  	remote = remote_get(argv[1]);
>  	url_in = (argc == 3) ? argv[2] : remote->url[0];
>  
> -	end_url_with_slash(&buf, url_in);
> -	url = strbuf_detach(&buf, NULL);
> +	if (!prefixcmp(url_in, "file://")) {
> +		dump_from_file = 1;
> +		url = url_decode(url_in + sizeof("file://")-1);
> +	}
> +	else {

Style:

	if (...) {
		...
        } else {
		...
	}

> +		dump_from_file = 0;
> +		end_url_with_slash(&buf, url_in);
> +		url = strbuf_detach(&buf, NULL);
> +	}
>  
>  	strbuf_addf(&buf, "refs/svn/%s/master", remote->name);
>  	private_ref = strbuf_detach(&buf, NULL);
--
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