First commit

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

1 files changed, 23 insertions, 0 deletions

diff --git a/libparsepcf_get_table_count.c b/libparsepcf_get_table_count.c
new file mode 100644
index 0000000..0eb8741
--- /dev/null
+++ b/libparsepcf_get_table_count.c
@@ -0,0 +1,23 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+
+
+int
+libparsepcf_get_table_count(const char *file, size_t size, size_t *countp)
+{
+	uint32_t count;
+
+	if (size < 8 || file[0] != 1 || file[1] != 'f' || file[2] != 'c' || file[3] != 'p')
+		goto ebfont;
+
+	count = libparsepcf_parse_lsb_uint32__(&file[4]);
+	if (count > (size - 8) / 16)
+		goto ebfont;
+
+	*countp = (size_t)count;
+	return 0;
+
+ebfont:
+	errno = EBFONT;
+	return -1;
+}