1 files changed, 28 insertions, 0 deletions
diff --git a/libparsepcf_get_bitmap_offsets.c b/libparsepcf_get_bitmap_offsets.c
new file mode 100644
index 0000000..192b07b
--- /dev/null
+++ b/libparsepcf_get_bitmap_offsets.c
@@ -0,0 +1,28 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+
+
+int
+libparsepcf_get_bitmap_offsets(const char *file, size_t size,
+                               const struct libparsepcf_table *table,
+                               const struct libparsepcf_bitmaps *meta,
+                               size_t *out, size_t first, size_t count)
+{
+	int msb = table->format & LIBPARSEPCF_BYTE;
+	size_t pos = table->offset + 8 + first * 4;
+	size_t i;
+
+	(void) size;
+
+	for (i = 0; i < count; i++, pos += 4) {
+		out[i] = (size_t)PARSE_UINT32(&file[pos + 0], msb);
+		if (out[i] > meta->bitmap_size)
+			goto ebfont;
+	}
+
+	return 0;
+
+ebfont:
+	errno = EBFONT;
+	return -1;
+}