/* Compute the delta between OLDROOT/OLDPATH and NEWROOT/NEWPATH and
store it into a new temporary file *TEMPFILE. OLDROOT may be NULL,
in which case the delta will be computed against an empty file, as
per the svn_fs_get_file_delta_stream docstring. Record the length
of the temporary file in *LEN, and rewind the file before
returning. */
static svn_error_t *
store_delta(apr_file_t **tempfile, svn_filesize_t *len,
svn_fs_root_t *oldroot, const char *oldpath,
svn_fs_root_t *newroot, const char *newpath, apr_pool_t *pool)
{
svn_stream_t *temp_stream;
apr_off_t offset = 0;
svn_txdelta_stream_t *delta_stream;
svn_txdelta_window_handler_t wh;
void *whb;
/* Create a temporary file and open a stream to it. Note that we need
the file handle in order to rewind it. */
SVN_ERR(svn_io_open_unique_file3(tempfile, NULL, NULL,
svn_io_file_del_on_pool_cleanup,
pool, pool));
temp_stream = svn_stream_from_aprfile2(*tempfile, TRUE, pool);
/* Compute the delta and send it to the temporary file. */
SVN_ERR(svn_fs_get_file_delta_stream(&delta_stream, oldroot, oldpath,
newroot, newpath, pool));
svn_txdelta_to_svndiff2(&wh, &whb, temp_stream, 0, pool);
SVN_ERR(svn_txdelta_send_txstream(delta_stream, wh, whb, pool));
/* Get the length of the temporary file and rewind it. */
SVN_ERR(svn_io_file_seek(*tempfile, APR_CUR, &offset, pool));
*len = offset;
offset = 0;
return svn_io_file_seek(*tempfile, APR_SET, &offset, pool);
}
/* Recursively traverse EDIT_PATH (as it exists under SOURCE_ROOT) emitting
the appropriate editor calls to add it and its children without any
history. This is meant to be used when either a subset of the tree
has been ignored and we need to copy something from that subset to
the part of the tree we do care about, or if a subset of the tree is
unavailable because of authz and we need to use it as the source of
a copy. */
static svn_error_t *
add_subdir(svn_fs_root_t *source_root,
svn_fs_root_t *target_root,
const svn_delta_editor_t *editor,
void *edit_baton,
const char *edit_path,
void *parent_baton,
const char *source_fspath,
svn_repos_authz_func_t authz_read_func,
void *authz_read_baton,
apr_hash_t *changed_paths,
apr_pool_t *pool,
void **dir_baton)
{
apr_pool_t *subpool = svn_pool_create(pool);
apr_hash_index_t *hi, *phi;
apr_hash_t *dirents;
apr_hash_t *props;
SVN_ERR(editor->add_directory(edit_path, parent_baton, NULL,
SVN_INVALID_REVNUM, pool, dir_baton));
SVN_ERR(svn_fs_node_proplist(&props, target_root, edit_path, pool));
for (phi = apr_hash_first(pool, props); phi; phi = apr_hash_next(phi))
{
const void *key;
void *val;
svn_pool_clear(subpool);
apr_hash_this(phi, &key, NULL, &val);
SVN_ERR(editor->change_dir_prop(*dir_baton, key, val, subpool));
}
/* We have to get the dirents from the source path, not the target,
because we want nested copies from *readable* paths to be handled by
path_driver_cb_func, not add_subdir (in order to preserve history). */
SVN_ERR(svn_fs_dir_entries(&dirents, source_root, source_fspath, pool));
for (hi = apr_hash_first(pool, dirents); hi; hi = apr_hash_next(hi))
{
svn_fs_path_change2_t *change;
svn_boolean_t readable = TRUE;
svn_fs_dirent_t *dent;
const char *copyfrom_path = NULL;
svn_revnum_t copyfrom_rev = SVN_INVALID_REVNUM;
const char *new_edit_path;
void *val;
svn_pool_clear(subpool);
apr_hash_this(hi, NULL, NULL, &val);
dent = val;
new_edit_path = svn_relpath_join(edit_path, dent->name, subpool);
/* If a file or subdirectory of the copied directory is listed as a
changed path (because it was modified after the copy but before the
commit), we remove it from the changed_paths hash so that future
calls to path_driver_cb_func will ignore it. */
change = apr_hash_get(changed_paths, new_edit_path, APR_HASH_KEY_STRING);
if (change)
{
apr_hash_set(changed_paths, new_edit_path, APR_HASH_KEY_STRING, NULL);
/* If it's a delete, skip this entry. */
if (change->change_kind == svn_fs_path_change_delete)
continue;
/* If it's a replacement, check for copyfrom info (if we
don't have it already. */
if (change->change_kind == svn_fs_path_change_replace)
{
if (! change->copyfrom_known)
{
SVN_ERR(svn_fs_copied_from(&change->copyfrom_rev,
&change->copyfrom_path,
target_root, new_edit_path, pool));
change->copyfrom_known = TRUE;
}
copyfrom_path = change->copyfrom_path;
copyfrom_rev = change->copyfrom_rev;
}
}
if (authz_read_func)
SVN_ERR(authz_read_func(&readable, target_root, new_edit_path,
authz_read_baton, pool));
if (! readable)
continue;
if (dent->kind == svn_node_dir)
{
svn_fs_root_t *new_source_root;
const char *new_source_fspath;
void *new_dir_baton;
if (copyfrom_path)
{
svn_fs_t *fs = svn_fs_root_fs(source_root);
SVN_ERR(svn_fs_revision_root(&new_source_root, fs,
copyfrom_rev, pool));
new_source_fspath = copyfrom_path;
}
else
{
new_source_root = source_root;
new_source_fspath = svn_fspath__join(source_fspath, dent->name,
subpool);
}
/* ### authz considerations?
*
* I think not; when path_driver_cb_func() calls add_subdir(), it
* passes SOURCE_ROOT and SOURCE_FSPATH that are unreadable.
*/
if (change && change->change_kind == svn_fs_path_change_replace
&& copyfrom_path == NULL)
{
SVN_ERR(editor->add_directory(new_edit_path, *dir_baton,
NULL, SVN_INVALID_REVNUM,
subpool, &new_dir_baton));
}
else
{
SVN_ERR(add_subdir(new_source_root, target_root,
editor, edit_baton, new_edit_path,
*dir_baton, new_source_fspath,
authz_read_func, authz_read_baton,
changed_paths, subpool, &new_dir_baton));
}
SVN_ERR(editor->close_directory(new_dir_baton, subpool));
}
else if (dent->kind == svn_node_file)
{
svn_txdelta_window_handler_t delta_handler;
void *delta_handler_baton, *file_baton;
svn_txdelta_stream_t *delta_stream;
svn_checksum_t *checksum;
SVN_ERR(editor->add_file(new_edit_path, *dir_baton, NULL,
SVN_INVALID_REVNUM, pool, &file_baton));
SVN_ERR(svn_fs_node_proplist(&props, target_root,
new_edit_path, subpool));
for (phi = apr_hash_first(pool, props); phi; phi = apr_hash_next(phi))
{
const void *key;
apr_hash_this(phi, &key, NULL, &val);
SVN_ERR(editor->change_file_prop(file_baton, key, val, subpool));
}
SVN_ERR(editor->apply_textdelta(file_baton, NULL, pool,
&delta_handler,
&delta_handler_baton));
SVN_ERR(svn_fs_get_file_delta_stream(&delta_stream, NULL, NULL,
target_root, new_edit_path,
pool));
SVN_ERR(svn_txdelta_send_txstream(delta_stream,
delta_handler,
delta_handler_baton,
pool));
SVN_ERR(svn_fs_file_checksum(&checksum, svn_checksum_md5, target_root,
new_edit_path, TRUE, pool));
SVN_ERR(editor->close_file(file_baton,
svn_checksum_to_cstring(checksum, pool),
pool));
}
else
SVN_ERR_MALFUNCTION();
}
svn_pool_destroy(subpool);
return SVN_NO_ERROR;
}
