1 files changed, 34 insertions, 0 deletions
diff --git a/libparsepcf_get_glyph_name_subtable.c b/libparsepcf_get_glyph_name_subtable.c
new file mode 100644
index 0000000..578bf87
--- /dev/null
+++ b/libparsepcf_get_glyph_name_subtable.c
@@ -0,0 +1,34 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+
+
+int
+libparsepcf_get_glyph_name_subtable(const char *file, size_t size,
+                                    const struct libparsepcf_table *table,
+                                    const struct libparsepcf_glyph_names *meta,
+                                    const char **out, size_t first, size_t count)
+{
+	size_t pos, i, off;
+	int msb = table->format & LIBPARSEPCF_BYTE;
+
+	(void) size;
+
+	if (table->size < 8)
+		goto ebfont;
+
+	pos = table->offset + 8 + first * 4;
+	for (i = 0; i < count; i++, pos += 4) {
+		off = (size_t)PARSE_UINT32(&file[pos], msb);
+		if (off > meta->strings_size)
+			goto ebfont;
+		out[i] = &meta->strings[off];
+		if (!memchr(out[i], 0, meta->strings_size - off))
+			goto ebfont;
+	}
+
+	return 0;
+
+ebfont:
+	errno = EBFONT;
+	return -1;
+}