[WIP PATCH 7/7] Dump the text delta

[Ramkumar Ramachandra <artagnon@gmail.com>]

Add a handler and handler_baton to handle text deltas in the editor
baton. Currently, program exits with code 01 because delta source ends
unexpectedly.

Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com>
---
 dump_editor.c |   51 +++++++++++++++++++++++++++++++--------------------
 1 files changed, 31 insertions(+), 20 deletions(-)

diff --git a/dump_editor.c b/dump_editor.c
index 7bd00a4..2192177 100644
--- a/dump_editor.c
+++ b/dump_editor.c
@@ -27,12 +27,13 @@ struct edit_baton {
 	apr_hash_t *properties;
 	apr_hash_t *del_properties; /* Value is always 0x1 */
 
-	/* Store the text delta */
-	const char *delta_text;
-
 	/* reusable buffer for writing file contents */
 	char buffer[SVN__STREAM_CHUNK_SIZE];
 	apr_size_t bufsize;
+
+	/* The txdelta handler and handler baton */
+	svn_txdelta_window_handler_t *handler;
+	void **handler_baton;
 };
 
 struct dir_baton {
@@ -351,22 +352,9 @@ static svn_error_t *dump_node(struct edit_baton *eb,
 		len = propstring->len;
 		SVN_ERR(svn_stream_write(eb->stream, propstring->data, &len));
 	}
-	/* if (must_dump_text && (kind == svn_node_file)) */
-	/* { */
-	/* 	svn_stream_t *contents; */
-
-	/* 	if (delta_file) */
-	/* 	{ */
-	/* 		/\* Make sure to close the underlying file when the stream is */
-	/* 		   closed. *\/ */
-	/* 		contents = svn_stream_from_aprfile2(delta_file, FALSE, pool); */
-	/* 	} */
-	/* 	else */
-	/* 		SVN_ERR(svn_fs_file_contents(&contents, eb->fs_root, path, pool)); */
-
-	/* 	SVN_ERR(svn_stream_copy3(contents, svn_stream_disown(eb->stream, pool), */
-	/* 	                         NULL, NULL, pool)); */
-	/* } */
+	if (must_dump_text && (kind == svn_node_file) && eb->handler) {
+		svn_txdelta_to_svndiff2(eb->handler, eb->handler_baton, eb->stream, 0, pool);
+	}
 
 	return SVN_NO_ERROR;
 }
@@ -610,6 +598,28 @@ svn_error_t *change_file_prop(void *file_baton,
 	return SVN_NO_ERROR;
 }
 
+svn_error_t *apply_textdelta(void *file_baton, const char *base_checksum,
+                             apr_pool_t *pool,
+                             svn_txdelta_window_handler_t *handler,
+                             void **handler_baton)
+{
+	struct file_baton *fb = file_baton;
+	svn_stream_t *source_stream = svn_stream_empty(pool);
+	svn_txdelta_apply(source_stream, fb->eb->stream,
+	                  NULL, fb->path, pool, handler,
+	                  handler_baton);
+	fb->eb->handler = handler;
+	fb->eb->handler_baton = handler_baton;
+
+	text_changed = TRUE;
+
+	SVN_ERR(dump_node(fb->eb, fb->path,
+	                  svn_node_dir, svn_node_action_change,
+	                  FALSE, NULL, 0, pool));
+
+	return SVN_NO_ERROR;
+}
+
 svn_error_t *get_dump_editor(const svn_delta_editor_t **editor,
                              void **edit_baton,
                              svn_revnum_t to_rev,
@@ -630,7 +640,8 @@ svn_error_t *get_dump_editor(const svn_delta_editor_t **editor,
 	dump_editor->open_directory = open_directory;
 	dump_editor->close_directory = close_directory;
 	dump_editor->change_dir_prop = change_dir_prop;
-	dump_editor->change_file_prop = change_file_prop;	
+	dump_editor->change_file_prop = change_file_prop;
+	dump_editor->apply_textdelta = apply_textdelta;
 	dump_editor->add_file = add_file;
 	dump_editor->open_file = open_file;
 
-- 
1.7.1