harfbuzz: check in harfbuzz-ng, add gyp define to use it

third_party/harfbuzz-ng/src/hb-blob.h

+/*
+ * Copyright (C) 2009  Red Hat, 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.
+ *
+ * Red Hat Author(s): Behdad Esfahbod
+ */
+
+#ifndef HB_BLOB_H
+#define HB_BLOB_H
+
+#include "hb-common.h"
+
+HB_BEGIN_DECLS
+
+
+typedef enum {
+  HB_MEMORY_MODE_DUPLICATE,
+  HB_MEMORY_MODE_READONLY,
+  HB_MEMORY_MODE_WRITABLE,
+  HB_MEMORY_MODE_READONLY_MAY_MAKE_WRITABLE
+} hb_memory_mode_t;
+
+typedef struct _hb_blob_t hb_blob_t;
+
+hb_blob_t *
+hb_blob_create (const char        *data,
+                unsigned int       length,
+                hb_memory_mode_t   mode,
+                hb_destroy_func_t  destroy,
+                void              *user_data);
+
+hb_blob_t *
+hb_blob_create_sub_blob (hb_blob_t    *parent,
+                         unsigned int  offset,
+                         unsigned int  length);
+
+hb_blob_t *
+hb_blob_create_empty (void);
+
+hb_blob_t *
+hb_blob_reference (hb_blob_t *blob);
+
+unsigned int
+hb_blob_get_reference_count (hb_blob_t *blob);
+
+void
+hb_blob_destroy (hb_blob_t *blob);
+
+unsigned int
+hb_blob_get_length (hb_blob_t *blob);
+
+const char *
+hb_blob_lock (hb_blob_t *blob);
+
+void
+hb_blob_unlock (hb_blob_t *blob);
+
+hb_bool_t
+hb_blob_is_writable (hb_blob_t *blob);
+
+hb_bool_t
+hb_blob_try_writable_inplace (hb_blob_t *blob);
+
+hb_bool_t
+hb_blob_try_writable (hb_blob_t *blob);
+
+
+HB_END_DECLS
+
+#endif /* HB_BLOB_H */