1 files changed, 50 insertions, 0 deletions
diff --git a/libskrift_open_font.c b/libskrift_open_font.c
new file mode 100644
index 0000000..1eb8ff9
--- /dev/null
+++ b/libskrift_open_font.c
@@ -0,0 +1,50 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+
+int
+libskrift_open_font(LIBSKRIFT_FONT **fontp, FILE *fp)
+{
+	int saved_errno;
+	char *mem = NULL, *new;
+	size_t size = 0, off = 0, r;
+
+	*fontp = calloc(1, sizeof(**fontp));
+
+	saved_errno = errno;
+	errno = 0;
+	for (;;) {
+		if (off + 2048 > size) {
+			size += 8192;
+			new = realloc(mem, size);
+			if (!new) {
+				free(mem);
+				return -1;
+			}
+			mem = new;
+		}
+		r = fread(&mem[off], 1, size - off, fp);
+		if (!r)
+			break;
+		off += r;
+	}
+	if (errno) {
+		free(mem);
+		return -1;
+	}
+
+	size = off;
+	new = realloc(mem, size);
+	if (new)
+		mem = new;
+	errno = saved_errno;
+
+	if (libskrift_open_font_mem(fontp, mem, size)) {
+		free(mem);
+		return -1;
+	}
+
+	(*fontp)->memory_free  = mem;
+	(*fontp)->memory_size  = size;
+
+	return 0;
+}