First commit

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 44 insertions, 0 deletions

diff --git a/ltag.c b/ltag.c
new file mode 100644
index 0000000..4831fb2
--- /dev/null
+++ b/ltag.c
@@ -0,0 +1,44 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+
+
+int
+libparsesfnt_parse_ltag(
+			const char *data, size_t size,
+			struct libparsesfnt_ltag *infop,
+			const struct libparsesfnt_tabdir_entry *tag)
+{
+	return PARSE(LIBPARSESFNT_LTAG__, tag->offset, 0, 0, 0, 1, tag);
+}
+
+
+int
+libparsesfnt_parse_ltag_entries(
+			const char *data, size_t size,
+			struct libparsesfnt_ltag_entry *infop,
+			const struct libparsesfnt_tabdir_entry *tag,
+			size_t first, size_t count)
+{
+	return PARSE(LIBPARSESFNT_LTAG_ENTRY__, tag->offset, 12, 0, first, count, tag);
+}
+
+
+int
+libparsesfnt_get_ltag_offset(
+			size_t size,
+			size_t *offsetp,
+			const struct libparsesfnt_tabdir_entry *tag, const struct libparsesfnt_ltag_entry *entry)
+{
+	size_t offset;
+	if ((size_t)entry->offset > size - (size_t)tag->offset) {
+		errno = EBFONT;
+		return -1;
+	}
+	offset = (size_t)tag->offset + (size_t)entry->offset;
+	if ((size_t)entry->length > size - offset) {
+		errno = EBFONT;
+		return -1;
+	}
+	*offsetp = offset;
+	return 0;
+}