1 files changed, 83 insertions, 0 deletions
diff --git a/src/hb-subset.h b/src/hb-subset.h
new file mode 100644
index 0000000..55ce25b
--- /dev/null
+++ b/src/hb-subset.h
@@ -0,0 +1,83 @@
+/*
+ * Copyright © 2018  Google, Inc.
+ *
+ *  This is part of HarfBuzz, a text shaping library.
+ *
+ * Permission is hereby granted, without written agreement and without
+ * license or royalty fees, to use, copy, modify, and distribute this
+ * software and its documentation for any purpose, provided that the
+ * above copyright notice and the following two paragraphs appear in
+ * all copies of this software.
+ *
+ * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
+ * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
+ * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
+ * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
+ * DAMAGE.
+ *
+ * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
+ * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
+ * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
+ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
+ *
+ * Google Author(s): Rod Sheeter
+ */
+
+#ifndef HB_SUBSET_H
+#define HB_SUBSET_H
+
+#include "hb.h"
+
+HB_BEGIN_DECLS
+
+/*
+ * hb_subset_profile_t
+ * Things that change based on target environment, e.g. OS.
+ * Threadsafe for multiple concurrent subset operations.
+ */
+
+typedef struct hb_subset_profile_t hb_subset_profile_t;
+
+HB_EXTERN hb_subset_profile_t *
+hb_subset_profile_create (void);
+
+HB_EXTERN void
+hb_subset_profile_destroy (hb_subset_profile_t *profile);
+
+/*
+ * hb_subset_input_t
+ *
+ * Things that change based on the input. Characters to keep, etc.
+ */
+
+typedef struct hb_subset_input_t hb_subset_input_t;
+
+HB_EXTERN hb_subset_input_t *
+hb_subset_input_create_or_fail (void);
+
+HB_EXTERN hb_subset_input_t *
+hb_subset_input_reference (hb_subset_input_t *subset_input);
+
+HB_EXTERN void
+hb_subset_input_destroy (hb_subset_input_t *subset_input);
+
+HB_EXTERN hb_set_t *
+hb_subset_input_unicode_set (hb_subset_input_t *subset_input);
+
+HB_EXTERN hb_set_t *
+hb_subset_input_glyph_set (hb_subset_input_t *subset_input);
+
+HB_EXTERN hb_bool_t *
+hb_subset_input_drop_hints (hb_subset_input_t *subset_input);
+
+/* hb_subset() */
+
+HB_EXTERN hb_face_t *
+hb_subset (hb_face_t *source,
+	   hb_subset_profile_t *profile,
+           hb_subset_input_t *input);
+
+HB_END_DECLS
+
+#endif /* HB_SUBSET_H */