BLI_storage: util function BLI_file_read_as_mem

Use for text loading and pasting from file.

2 files changed, 34 insertions, 0 deletions

diff --git a/source/blender/blenlib/BLI_fileops.h b/source/blender/blenlib/BLI_fileops.h
index 53ebc81fe22..b842c30c975 100644
--- a/source/blender/blenlib/BLI_fileops.h
+++ b/source/blender/blenlib/BLI_fileops.h
@@ -130,6 +130,7 @@ bool   BLI_file_older(const char *file1, const char *file2) ATTR_WARN_UNUSED_RES
 
 /* read ascii file as lines, empty list if reading fails */
 struct LinkNode *BLI_file_read_as_lines(const char *file) ATTR_WARN_UNUSED_RESULT ATTR_NONNULL();
+void  *BLI_file_read_as_mem(const char *filepath, size_t pad_bytes, size_t *r_size);
 void   BLI_file_free_lines(struct LinkNode *lines);
 
 /* this weirdo pops up in two places ... */
diff --git a/source/blender/blenlib/intern/storage.c b/source/blender/blenlib/intern/storage.c
index f7a8664c739..a107c84d4d0 100644
--- a/source/blender/blenlib/intern/storage.c
+++ b/source/blender/blenlib/intern/storage.c
@@ -287,6 +287,39 @@ bool BLI_is_file(const char *path)
 	return (mode && !S_ISDIR(mode));
 }
 
+void *BLI_file_read_as_mem(const char *filepath, size_t pad_bytes, size_t *r_size)
+{
+	FILE *fp = BLI_fopen(filepath, "r");
+	void *mem = NULL;
+
+	if (fp) {
+		fseek(fp, 0L, SEEK_END);
+		const long int filelen = ftell(fp);
+		if (filelen == -1) {
+			goto finally;
+		}
+		fseek(fp, 0L, SEEK_SET);
+
+		mem = MEM_mallocN(filelen + pad_bytes, __func__);
+		if (mem == NULL) {
+			goto finally;
+		}
+
+		if (fread(mem, 1, filelen, fp) != filelen) {
+			MEM_freeN(mem);
+			mem = NULL;
+			goto finally;
+		}
+
+		*r_size = filelen;
+	}
+
+finally:
+	fclose(fp);
+	return mem;
+}
+
+
 /**
  * Reads the contents of a text file and returns the lines in a linked list.
  */