[PATCH 02/13] Add skeleton SVN client and Makefile

Add a basic SVN command-line client along with a Makefile that does
just enough to establish a connection with the ASF subversion server;
it initializes a memory pool, sees that configuration files are in
order, builds up a context object, sets up an authentication baton,
and finally opens a session to the subversion server.

Signed-off-by: Ramkumar Ramachandra <artagnon_at_gmail.com>

---
 Makefile   |    8 +++++++
 svndumpr.c |   68 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 76 insertions(+), 0 deletions(-)
 create mode 100644 Makefile
 create mode 100644 svndumpr.c
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..a6022f7
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,8 @@
+svndumpr: *.c *.h
+	$(CC) -Wall -Werror -DAPR_POOL_DEBUG -ggdb3 -O0 -o $@ svndumpr.c -lsvn_client-1 -I. -I/usr/include/subversion-1 -I/usr/include/apr-1.0
+
+svndumpr_bench: *.c *.h
+	$(CC) -O2 -o $@ svndumpr.c -lsvn_client-1 -I. -I/usr/include/subversion-1 -I/usr/include/apr-1.0
+
+clean:
+	$(RM) svndumpr svndumpr_bench
diff --git a/svndumpr.c b/svndumpr.c
new file mode 100644
index 0000000..737c4aa
--- /dev/null
+++ b/svndumpr.c
@@ -0,0 +1,68 @@
+/* Licensed under a two-clause BSD-style license.
+ * See LICENSE for details.
+ */
+
+#include "svn_pools.h"
+#include "svn_cmdline.h"
+#include "svn_client.h"
+#include "svn_ra.h"
+#include "svn_repos.h"
+
+static apr_pool_t *pool = NULL;
+static svn_client_ctx_t *ctx = NULL;
+static svn_ra_session_t *session = NULL;
+
+svn_error_t *populate_context()
+{
+	const char *http_library;
+	
+	SVN_ERR(svn_config_get_config(&(ctx->config), NULL, pool));
+	
+	http_library = getenv("SVN_HTTP_LIBRARY");
+	if (http_library)
+		svn_config_set(apr_hash_get(ctx->config, "servers", APR_HASH_KEY_STRING),
+		               "global", "http-library", http_library);
+	return SVN_NO_ERROR;
+}
+
+svn_error_t *open_connection(const char *url)
+{
+	SVN_ERR(svn_config_ensure (NULL, pool));
+	SVN_ERR(svn_client_create_context (&ctx, pool));
+	SVN_ERR(svn_ra_initialize(pool));
+
+#if defined(WIN32) || defined(__CYGWIN__)
+	if (getenv("SVN_ASP_DOT_NET_HACK"))
+		SVN_ERR(svn_wc_set_adm_dir("_svn", pool));
+#endif
+
+	SVN_ERR(populate_context());
+	SVN_ERR(svn_cmdline_create_auth_baton(&(ctx->auth_baton), TRUE,
+					      NULL, NULL, NULL, FALSE,
+					      FALSE, NULL, NULL, NULL,
+					      pool));
+	SVN_ERR(svn_client_open_ra_session(&session, url, ctx, pool));
+	return SVN_NO_ERROR;
+}
+
+svn_error_t *replay_range(svn_revnum_t start_revision, svn_revnum_t end_revision)
+{
+	return SVN_NO_ERROR;
+}
+
+int main()
+{
+	const char url[] = "http://svn.apache.org/repos/asf";
+	svn_revnum_t start_revision = 1, end_revision = 500;
+	if (svn_cmdline_init ("svndumpr", stderr) != EXIT_SUCCESS)
+		return 1;
+
+	pool = svn_pool_create(NULL);
+
+	SVN_INT_ERR(open_connection(url));
+	SVN_INT_ERR(replay_range(start_revision, end_revision));
+
+	svn_pool_destroy(pool);
+	
+	return 0;
+}
-- 
1.7.1