1 files changed, 60 insertions, 0 deletions
diff --git a/source/blender/blenloader/intern/readfile_tempload.cc b/source/blender/blenloader/intern/readfile_tempload.cc
new file mode 100644
index 00000000000..933077924f5
--- /dev/null
+++ b/source/blender/blenloader/intern/readfile_tempload.cc
@@ -0,0 +1,60 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+/** \file
+ * \ingroup blenloader
+ */
+#include "BLO_readfile.h"
+
+#include "MEM_guardedalloc.h"
+
+#include "BLI_string.h"
+
+#include "BKE_main.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 = static_cast<TempLibraryContext *>(
+      MEM_callocN(sizeof(*temp_lib_ctx), __func__));
+  temp_lib_ctx->bmain_base = BKE_main_new();
+  temp_lib_ctx->bf_reports.reports = reports;
+
+  /* Copy the file path so any path remapping is performed properly. */
+  STRNCPY(temp_lib_ctx->bmain_base->filepath, real_main->filepath);
+
+  temp_lib_ctx->blendhandle = BLO_blendhandle_from_file(blend_file_path,
+                                                        &temp_lib_ctx->bf_reports);
+
+  BLO_library_link_params_init(
+      &temp_lib_ctx->liblink_params, temp_lib_ctx->bmain_base, 0, LIB_TAG_TEMP_MAIN);
+
+  temp_lib_ctx->bmain_lib = 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->bmain_lib,
+                                                      &temp_lib_ctx->blendhandle,
+                                                      idcode,
+                                                      idname,
+                                                      &temp_lib_ctx->liblink_params);
+
+  return temp_lib_ctx;
+}
+
+void BLO_library_temp_free(TempLibraryContext *temp_lib_ctx)
+{
+  /* This moves the temporary ID and any indirectly loaded data into `bmain_base`
+   * only to free `bmain_base`, while redundant this is the typical code-path for library linking,
+   * it's more convenient to follow this convention rather than create a new code-path for this
+   * one-off use case. */
+  BLO_library_link_end(
+      temp_lib_ctx->bmain_lib, &temp_lib_ctx->blendhandle, &temp_lib_ctx->liblink_params);
+  BLO_blendhandle_close(temp_lib_ctx->blendhandle);
+  BKE_main_free(temp_lib_ctx->bmain_base);
+  MEM_freeN(temp_lib_ctx);
+}