Add stripped version of HarfBuzz-NG 0.9.19 sources to 3rdparty

Change-Id: I06fbf58131ebce51ce95921d8dfd65dd3d3e236f
Reviewed-by: Lars Knoll <lars.knoll@digia.com>

1 files changed, 202 insertions, 0 deletions

diff --git a/src/3rdparty/harfbuzz-ng/src/hb-buffer-private.hh b/src/3rdparty/harfbuzz-ng/src/hb-buffer-private.hh
new file mode 100644
index 0000000000..a8cf770244
--- /dev/null
+++ b/src/3rdparty/harfbuzz-ng/src/hb-buffer-private.hh
@@ -0,0 +1,202 @@
+/*
+ * Copyright © 1998-2004  David Turner and Werner Lemberg
+ * Copyright © 2004,2007,2009,2010  Red Hat, Inc.
+ * Copyright © 2011,2012  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.
+ *
+ * Red Hat Author(s): Owen Taylor, Behdad Esfahbod
+ * Google Author(s): Behdad Esfahbod
+ */
+
+#ifndef HB_BUFFER_PRIVATE_HH
+#define HB_BUFFER_PRIVATE_HH
+
+#include "hb-private.hh"
+#include "hb-buffer.h"
+#include "hb-object-private.hh"
+#include "hb-unicode-private.hh"
+
+
+ASSERT_STATIC (sizeof (hb_glyph_info_t) == 20);
+ASSERT_STATIC (sizeof (hb_glyph_info_t) == sizeof (hb_glyph_position_t));
+
+
+/*
+ * hb_buffer_t
+ */
+
+struct hb_buffer_t {
+  hb_object_header_t header;
+  ASSERT_POD ();
+
+  /* Information about how the text in the buffer should be treated */
+
+  hb_unicode_funcs_t *unicode; /* Unicode functions */
+  hb_segment_properties_t props; /* Script, language, direction */
+  hb_buffer_flags_t flags; /* BOT / EOT / etc. */
+
+  /* Buffer contents */
+
+  hb_buffer_content_type_t content_type;
+
+  bool in_error; /* Allocation failed */
+  bool have_output; /* Whether we have an output buffer going on */
+  bool have_positions; /* Whether we have positions */
+
+  unsigned int idx; /* Cursor into ->info and ->pos arrays */
+  unsigned int len; /* Length of ->info and ->pos arrays */
+  unsigned int out_len; /* Length of ->out array if have_output */
+
+  unsigned int allocated; /* Length of allocated arrays */
+  hb_glyph_info_t     *info;
+  hb_glyph_info_t     *out_info;
+  hb_glyph_position_t *pos;
+
+  inline hb_glyph_info_t &cur (unsigned int i = 0) { return info[idx + i]; }
+  inline hb_glyph_info_t cur (unsigned int i = 0) const { return info[idx + i]; }
+
+  inline hb_glyph_position_t &cur_pos (unsigned int i = 0) { return pos[idx + i]; }
+  inline hb_glyph_position_t cur_pos (unsigned int i = 0) const { return pos[idx + i]; }
+
+  inline hb_glyph_info_t &prev (void) { return out_info[out_len - 1]; }
+  inline hb_glyph_info_t prev (void) const { return info[out_len - 1]; }
+
+  inline bool has_separate_output (void) const { return info != out_info; }
+
+  unsigned int serial;
+
+  /* These reflect current allocations of the bytes in glyph_info_t's var1 and var2. */
+  uint8_t allocated_var_bytes[8];
+  const char *allocated_var_owner[8];
+
+  /* Text before / after the main buffer contents.
+   * Always in Unicode, and ordered outward.
+   * Index 0 is for "pre-context", 1 for "post-context". */
+  static const unsigned int CONTEXT_LENGTH = 5;
+  hb_codepoint_t context[2][CONTEXT_LENGTH];
+  unsigned int context_len[2];
+
+
+  /* Methods */
+
+  HB_INTERNAL void reset (void);
+  HB_INTERNAL void clear (void);
+
+  inline unsigned int backtrack_len (void) const
+  { return have_output? out_len : idx; }
+  inline unsigned int next_serial (void) { return serial++; }
+
+  HB_INTERNAL void allocate_var (unsigned int byte_i, unsigned int count, const char *owner);
+  HB_INTERNAL void deallocate_var (unsigned int byte_i, unsigned int count, const char *owner);
+  HB_INTERNAL void assert_var (unsigned int byte_i, unsigned int count, const char *owner);
+  HB_INTERNAL void deallocate_var_all (void);
+
+  HB_INTERNAL void add (hb_codepoint_t  codepoint,
+			unsigned int    cluster);
+  HB_INTERNAL void add_info (const hb_glyph_info_t &glyph_info);
+
+  HB_INTERNAL void reverse_range (unsigned int start, unsigned int end);
+  HB_INTERNAL void reverse (void);
+  HB_INTERNAL void reverse_clusters (void);
+  HB_INTERNAL void guess_segment_properties (void);
+
+  HB_INTERNAL void swap_buffers (void);
+  HB_INTERNAL void remove_output (void);
+  HB_INTERNAL void clear_output (void);
+  HB_INTERNAL void clear_positions (void);
+
+  HB_INTERNAL void replace_glyphs (unsigned int num_in,
+				   unsigned int num_out,
+				   const hb_codepoint_t *glyph_data);
+
+  HB_INTERNAL void replace_glyph (hb_codepoint_t glyph_index);
+  /* Makes a copy of the glyph at idx to output and replace glyph_index */
+  HB_INTERNAL void output_glyph (hb_codepoint_t glyph_index);
+  HB_INTERNAL void output_info (const hb_glyph_info_t &glyph_info);
+  /* Copies glyph at idx to output but doesn't advance idx */
+  HB_INTERNAL void copy_glyph (void);
+  /* Copies glyph at idx to output and advance idx.
+   * If there's no output, just advance idx. */
+  inline void
+  next_glyph (void)
+  {
+    if (have_output)
+    {
+      if (unlikely (out_info != info || out_len != idx)) {
+	if (unlikely (!make_room_for (1, 1))) return;
+	out_info[out_len] = info[idx];
+      }
+      out_len++;
+    }
+
+    idx++;
+  }
+
+  /* Advance idx without copying to output. */
+  inline void skip_glyph (void) { idx++; }
+
+  inline void reset_masks (hb_mask_t mask)
+  {
+    for (unsigned int j = 0; j < len; j++)
+      info[j].mask = mask;
+  }
+  inline void add_masks (hb_mask_t mask)
+  {
+    for (unsigned int j = 0; j < len; j++)
+      info[j].mask |= mask;
+  }
+  HB_INTERNAL void set_masks (hb_mask_t value,
+			      hb_mask_t mask,
+			      unsigned int cluster_start,
+			      unsigned int cluster_end);
+
+  HB_INTERNAL void merge_clusters (unsigned int start,
+				   unsigned int end);
+  HB_INTERNAL void merge_out_clusters (unsigned int start,
+				       unsigned int end);
+
+  /* Internal methods */
+  HB_INTERNAL bool enlarge (unsigned int size);
+
+  inline bool ensure (unsigned int size)
+  { return likely (size < allocated) ? true : enlarge (size); }
+
+  HB_INTERNAL bool make_room_for (unsigned int num_in, unsigned int num_out);
+
+  HB_INTERNAL void *get_scratch_buffer (unsigned int *size);
+
+  inline void clear_context (unsigned int side) { context_len[side] = 0; }
+};
+
+
+#define HB_BUFFER_XALLOCATE_VAR(b, func, var, owner) \
+  b->func (offsetof (hb_glyph_info_t, var) - offsetof(hb_glyph_info_t, var1), \
+	   sizeof (b->info[0].var), owner)
+#define HB_BUFFER_ALLOCATE_VAR(b, var) \
+	HB_BUFFER_XALLOCATE_VAR (b, allocate_var, var (), #var)
+#define HB_BUFFER_DEALLOCATE_VAR(b, var) \
+	HB_BUFFER_XALLOCATE_VAR (b, deallocate_var, var (), #var)
+#define HB_BUFFER_ASSERT_VAR(b, var) \
+	HB_BUFFER_XALLOCATE_VAR (b, assert_var, var (), #var)
+
+
+#endif /* HB_BUFFER_PRIVATE_HH */