diff options
author | Sybren A. Stüvel <sybren@blender.org> | 2021-03-16 17:57:00 +0300 |
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committer | Sybren A. Stüvel <sybren@blender.org> | 2021-03-18 13:09:15 +0300 |
commit | 8ab52daa3aafcec7c8780653090c2be49eeb6748 (patch) | |
tree | 570d7a0030b81609b5880b1e2714efb62339bbf5 /source/blender/blenloader/intern/readfile_tempload.c | |
parent | aeff59073b23d50a39eb0a614d3907ac0d04994a (diff) |
BLO: Functions for temporarily loading a single datablock
This introduces two functions to the blenloader module, here shown as
calls for brevity:
* `temp_lib_ctx = BLO_library_temp_load_id(real_main, blend_file_path, idcode, idname, reports);`
* Now the data in `temp_lib_ctx->temp_id` can be used (but ought not to
be not assigned to non-temp datablocks).
* `BLO_library_temp_free(temp_lib_ctx);`
The first loads a datablock from a blend file, and returns it as part of
a `struct TempLibraryContext`. This struct contains the temp-loaded ID,
as well as enough information to correctly free everything again.
Differential Revision: https://developer.blender.org/D10736
Diffstat (limited to 'source/blender/blenloader/intern/readfile_tempload.c')
-rw-r--r-- | source/blender/blenloader/intern/readfile_tempload.c | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/source/blender/blenloader/intern/readfile_tempload.c b/source/blender/blenloader/intern/readfile_tempload.c new file mode 100644 index 00000000000..691d8f542ab --- /dev/null +++ b/source/blender/blenloader/intern/readfile_tempload.c @@ -0,0 +1,58 @@ +/* + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + */ + +/** \file + * \ingroup blenloader + */ +#include "BLO_readfile.h" + +#include "MEM_guardedalloc.h" + +#include "BKE_report.h" + +#include "DNA_ID.h" + +TempLibraryContext *BLO_library_temp_load_id(struct Main *real_main, + const char *blend_file_path, + const short idcode, + const char *idname, + struct ReportList *reports) +{ + TempLibraryContext *temp_lib_ctx = MEM_callocN(sizeof(*temp_lib_ctx), __func__); + + temp_lib_ctx->blendhandle = BLO_blendhandle_from_file(blend_file_path, reports); + + BLO_library_link_params_init(&temp_lib_ctx->liblink_params, real_main, 0, LIB_TAG_TEMP_MAIN); + + temp_lib_ctx->temp_main = BLO_library_link_begin( + &temp_lib_ctx->blendhandle, blend_file_path, &temp_lib_ctx->liblink_params); + + temp_lib_ctx->temp_id = BLO_library_link_named_part(temp_lib_ctx->temp_main, + &temp_lib_ctx->blendhandle, + idcode, + idname, + &temp_lib_ctx->liblink_params); + + return temp_lib_ctx; +} + +void BLO_library_temp_free(TempLibraryContext *temp_lib_ctx) +{ + BLO_library_link_end( + temp_lib_ctx->temp_main, &temp_lib_ctx->blendhandle, &temp_lib_ctx->liblink_params); + BLO_blendhandle_close(temp_lib_ctx->blendhandle); + MEM_freeN(temp_lib_ctx); +} |