Update harfbuzz-ng to 0.9.24

third_party/harfbuzz-ng/src/hb-old.cc

Index: third_party/harfbuzz-ng/src/hb-old.cc
diff --git a/third_party/harfbuzz-ng/src/hb-old.cc b/third_party/harfbuzz-ng/src/hb-old.cc
deleted file mode 100644
index a7ea8ed9bbe837b83b352afcbfc50e042d240f30..0000000000000000000000000000000000000000
--- a/third_party/harfbuzz-ng/src/hb-old.cc
+++ /dev/null
@@ -1,410 +0,0 @@
-/*
- * Copyright © 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.
- *
- * Google Author(s): Behdad Esfahbod
- */
-
-#define HB_SHAPER old
-#define hb_old_shaper_face_data_t HB_FaceRec_
-#define hb_old_shaper_font_data_t HB_Font_
-#include "hb-shaper-impl-private.hh"
-
-#include <harfbuzz.h>
-
-
-#ifndef HB_DEBUG_OLD
-#define HB_DEBUG_OLD (HB_DEBUG+0)
-#endif
-
-
-static HB_Script
-hb_old_script_from_script (hb_script_t script)
-{
-  switch ((hb_tag_t) script)
-  {
-    default:
-    case HB_SCRIPT_COMMON:		return HB_Script_Common;
-    case HB_SCRIPT_GREEK:		return HB_Script_Greek;
-    case HB_SCRIPT_CYRILLIC:		return HB_Script_Cyrillic;
-    case HB_SCRIPT_ARMENIAN:		return HB_Script_Armenian;
-    case HB_SCRIPT_HEBREW:		return HB_Script_Hebrew;
-    case HB_SCRIPT_ARABIC:		return HB_Script_Arabic;
-    case HB_SCRIPT_SYRIAC:		return HB_Script_Syriac;
-    case HB_SCRIPT_THAANA:		return HB_Script_Thaana;
-    case HB_SCRIPT_DEVANAGARI:		return HB_Script_Devanagari;
-    case HB_SCRIPT_BENGALI:		return HB_Script_Bengali;
-    case HB_SCRIPT_GURMUKHI:		return HB_Script_Gurmukhi;
-    case HB_SCRIPT_GUJARATI:		return HB_Script_Gujarati;
-    case HB_SCRIPT_ORIYA:		return HB_Script_Oriya;
-    case HB_SCRIPT_TAMIL:		return HB_Script_Tamil;
-    case HB_SCRIPT_TELUGU:		return HB_Script_Telugu;
-    case HB_SCRIPT_KANNADA:		return HB_Script_Kannada;
-    case HB_SCRIPT_MALAYALAM:		return HB_Script_Malayalam;
-    case HB_SCRIPT_SINHALA:		return HB_Script_Sinhala;
-    case HB_SCRIPT_THAI:		return HB_Script_Thai;
-    case HB_SCRIPT_LAO:			return HB_Script_Lao;
-    case HB_SCRIPT_TIBETAN:		return HB_Script_Tibetan;
-    case HB_SCRIPT_MYANMAR:		return HB_Script_Myanmar;
-    case HB_SCRIPT_GEORGIAN:		return HB_Script_Georgian;
-    case HB_SCRIPT_HANGUL:		return HB_Script_Hangul;
-    case HB_SCRIPT_OGHAM:		return HB_Script_Ogham;
-    case HB_SCRIPT_RUNIC:		return HB_Script_Runic;
-    case HB_SCRIPT_KHMER:		return HB_Script_Khmer;
-    case HB_SCRIPT_NKO:			return HB_Script_Nko;
-    case HB_SCRIPT_INHERITED:		return HB_Script_Inherited;
-  }
-}
-
-
-static HB_Bool
-hb_old_convertStringToGlyphIndices (HB_Font old_font,
-				    const HB_UChar16 *string,
-				    hb_uint32 length,
-				    HB_Glyph *glyphs,
-				    hb_uint32 *numGlyphs,
-				    HB_Bool rightToLeft)
-{
-  hb_font_t *font = (hb_font_t *) old_font->userData;
-
-  for (unsigned int i = 0; i < length; i++)
-  {
-    hb_codepoint_t u;
-
-    /* XXX Handle UTF-16.  Ugh */
-    u = string[i];
-
-    if (rightToLeft)
-      u = hb_unicode_funcs_get_default ()->mirroring (u);
-
-    font->get_glyph (u, 0, &u); /* TODO Variation selectors */
-
-    glyphs[i] = u;
-  }
-  *numGlyphs = length; /* XXX */
-
-  return true;
-}
-
-static void
-hb_old_getGlyphAdvances (HB_Font old_font,
-			 const HB_Glyph *glyphs,
-			 hb_uint32 numGlyphs,
-			 HB_Fixed *advances,
-			 int flags /*HB_ShaperFlag*/ HB_UNUSED)
-{
-  hb_font_t *font = (hb_font_t *) old_font->userData;
-
-  for (unsigned int i = 0; i < numGlyphs; i++)
-    advances[i] = font->get_glyph_h_advance (glyphs[i]);
-}
-
-static HB_Bool
-hb_old_canRender (HB_Font old_font,
-		  const HB_UChar16 *string,
-		  hb_uint32 length)
-{
-  return true; /* TODO */
-}
-
-static HB_Error
-hb_old_getPointInOutline (HB_Font old_font,
-			  HB_Glyph glyph,
-			  int flags /*HB_ShaperFlag*/,
-			  hb_uint32 point,
-			  HB_Fixed *xpos,
-			  HB_Fixed *ypos,
-			  hb_uint32 *nPoints)
-{
-  return HB_Err_Ok; /* TODO */
-}
-
-static void
-hb_old_getGlyphMetrics (HB_Font old_font,
-			HB_Glyph glyph,
-			HB_GlyphMetrics *metrics)
-{
-  hb_font_t *font = (hb_font_t *) old_font->userData;
-
-  hb_glyph_extents_t extents;
-
-  font->get_glyph_extents (glyph, &extents);
-
-  metrics->x       = extents.x_bearing;
-  metrics->y       = extents.y_bearing;
-  metrics->width   = extents.width;
-  metrics->height  = extents.height;
-  metrics->xOffset = font->get_glyph_h_advance (glyph);
-  metrics->yOffset = 0;
-}
-
-static HB_Fixed
-hb_old_getFontMetric (HB_Font old_font,
-		      HB_FontMetric metric)
-{
-  hb_font_t *font = (hb_font_t *) old_font->userData;
-
-  switch (metric)
-  {
-    case HB_FontAscent:
-       return font->y_scale; /* XXX We don't have ascent data yet. */
-
-    default:
-      return 0;
-  }
-}
-
-static const HB_FontClass hb_old_font_class = {
-  hb_old_convertStringToGlyphIndices,
-  hb_old_getGlyphAdvances,
-  hb_old_canRender,
-  hb_old_getPointInOutline,
-  hb_old_getGlyphMetrics,
-  hb_old_getFontMetric
-};
-
-
-
-static HB_Error
-table_func (void *font, HB_Tag tag, HB_Byte *buffer, HB_UInt *length)
-{
-  hb_face_t *face = (hb_face_t *) font;
-  hb_blob_t *blob = face->reference_table ((hb_tag_t) tag);
-  unsigned int capacity = *length;
-  *length = hb_blob_get_length (blob);
-  memcpy (buffer, hb_blob_get_data (blob, NULL), MIN (capacity, *length));
-  hb_blob_destroy (blob);
- return HB_Err_Ok;
-}
-
-
-/*
- * shaper face data
- */
-
-hb_old_shaper_face_data_t *
-_hb_old_shaper_face_data_create (hb_face_t *face)
-{
-  return HB_NewFace (face, table_func);
-}
-
-void
-_hb_old_shaper_face_data_destroy (hb_old_shaper_face_data_t *data)
-{
-  HB_FreeFace (data);
-}
-
-
-/*
- * shaper font data
- */
-
-hb_old_shaper_font_data_t *
-_hb_old_shaper_font_data_create (hb_font_t *font)
-{
-  HB_FontRec *data = (HB_FontRec *) calloc (1, sizeof (HB_FontRec));
-  if (unlikely (!data)) {
-    DEBUG_MSG (OLD, font, "malloc()ing HB_Font failed");
-    return NULL;
-  }
-
-  data->klass = &hb_old_font_class;
-  data->x_ppem = font->x_ppem;
-  data->y_ppem = font->y_ppem;
-  data->x_scale = font->x_scale; /* XXX */
-  data->y_scale = font->y_scale; /* XXX */
-  data->userData = font;
-
-  return data;
-}
-
-void
-_hb_old_shaper_font_data_destroy (hb_old_shaper_font_data_t *data)
-{
-  free (data);
-}
-
-
-/*
- * shaper shape_plan data
- */
-
-struct hb_old_shaper_shape_plan_data_t {};
-
-hb_old_shaper_shape_plan_data_t *
-_hb_old_shaper_shape_plan_data_create (hb_shape_plan_t    *shape_plan HB_UNUSED,
-				       const hb_feature_t *user_features HB_UNUSED,
-				       unsigned int        num_user_features HB_UNUSED)
-{
-  return (hb_old_shaper_shape_plan_data_t *) HB_SHAPER_DATA_SUCCEEDED;
-}
-
-void
-_hb_old_shaper_shape_plan_data_destroy (hb_old_shaper_shape_plan_data_t *data HB_UNUSED)
-{
-}
-
-
-/*
- * shaper
- */
-
-hb_bool_t
-_hb_old_shape (hb_shape_plan_t    *shape_plan HB_UNUSED,
-	       hb_font_t          *font,
-	       hb_buffer_t        *buffer,
-	       const hb_feature_t *features,
-	       unsigned int        num_features)
-{
-  hb_face_t *face = font->face;
-  HB_Face old_face = HB_SHAPER_DATA_GET (face);
-  HB_Font old_font = HB_SHAPER_DATA_GET (font);
-
-  bool backward = HB_DIRECTION_IS_BACKWARD (buffer->props.direction);
-
-retry:
-
-  unsigned int scratch_size;
-  char *scratch = (char *) buffer->get_scratch_buffer (&scratch_size);
-
-#define utf16_index() var1.u32
-  HB_UChar16 *pchars = (HB_UChar16 *) scratch;
-  unsigned int chars_len = 0;
-  for (unsigned int i = 0; i < buffer->len; i++) {
-    hb_codepoint_t c = buffer->info[i].codepoint;
-    buffer->info[i].utf16_index() = chars_len;
-    if (likely (c < 0x10000))
-      pchars[chars_len++] = c;
-    else if (unlikely (c >= 0x110000))
-      pchars[chars_len++] = 0xFFFD;
-    else {
-      pchars[chars_len++] = 0xD800 + ((c - 0x10000) >> 10);
-      pchars[chars_len++] = 0xDC00 + ((c - 0x10000) & ((1 << 10) - 1));
-    }
-  }
-
-
-#define ALLOCATE_ARRAY(Type, name, len) \
-  name = (Type *) scratch; \
-  scratch += (len) * sizeof ((name)[0]); \
-  scratch_size -= (len) * sizeof ((name)[0]);
-
-
-  HB_ShaperItem item = {0};
-
-  ALLOCATE_ARRAY (const HB_UChar16, item.string, chars_len);
-  ALLOCATE_ARRAY (unsigned short, item.log_clusters, chars_len + 2);
-  item.stringLength = chars_len;
-  item.item.pos = 0;
-  item.item.length = item.stringLength;
-  item.item.script = hb_old_script_from_script (buffer->props.script);
-  item.item.bidiLevel = backward ? 1 : 0;
-
-  item.font = old_font;
-  item.face = old_face;
-  item.shaperFlags = 0;
-
-  item.glyphIndicesPresent = false;
-
-  /* TODO Alignment. */
-  unsigned int num_glyphs = scratch_size / (sizeof (HB_Glyph) +
-					    sizeof (HB_GlyphAttributes) +
-					    sizeof (HB_Fixed) +
-					    sizeof (HB_FixedPoint) +
-					    sizeof (uint32_t));
-
-  item.num_glyphs = num_glyphs;
-  ALLOCATE_ARRAY (HB_Glyph, item.glyphs, num_glyphs);
-  ALLOCATE_ARRAY (HB_GlyphAttributes, item.attributes, num_glyphs);
-  ALLOCATE_ARRAY (HB_Fixed, item.advances, num_glyphs);
-  ALLOCATE_ARRAY (HB_FixedPoint, item.offsets, num_glyphs);
-  /* Apparently in some cases the offsets array will not be fully assigned to.
-   * Clear it. */
-  memset (item.offsets, 0, num_glyphs * sizeof (item.offsets[0]));
-  uint32_t *vis_clusters;
-  ALLOCATE_ARRAY (uint32_t, vis_clusters, num_glyphs);
-
-#undef ALLOCATE_ARRAY
-
-  if (!HB_ShapeItem (&item))
-  {
-    if (unlikely (item.num_glyphs > num_glyphs))
-    {
-      buffer->ensure (buffer->allocated * 2);
-      if (buffer->in_error)
-        return false;
-      goto retry;
-    }
-    return false;
-  }
-  num_glyphs = item.num_glyphs;
-
-  /* Ok, we've got everything we need, now compose output buffer,
-   * very, *very*, carefully! */
-
-  /* Calculate visual-clusters.  That's what we ship. */
-  for (unsigned int i = 0; i < num_glyphs; i++)
-    vis_clusters[i] = -1;
-  for (unsigned int i = 0; i < buffer->len; i++) {
-    uint32_t *p = &vis_clusters[item.log_clusters[buffer->info[i].utf16_index()]];
-    *p = MIN (*p, buffer->info[i].cluster);
-  }
-  for (unsigned int i = 1; i < num_glyphs; i++)
-    if (vis_clusters[i] == (uint32_t) -1)
-      vis_clusters[i] = vis_clusters[i - 1];
-
-#undef utf16_index
-
-  buffer->ensure (num_glyphs);
-  if (buffer->in_error)
-    return false;
-
-
-  buffer->len = num_glyphs;
-  hb_glyph_info_t *info = buffer->info;
-  for (unsigned int i = 0; i < num_glyphs; i++)
-  {
-    info[i].codepoint = item.glyphs[i];
-    info[i].cluster = vis_clusters[i];
-
-    info[i].mask = item.advances[i];
-    info[i].var1.u32 = item.offsets[i].x;
-    info[i].var2.u32 = item.offsets[i].y;
-  }
-
-  buffer->clear_positions ();
-
-  for (unsigned int i = 0; i < num_glyphs; ++i) {
-    hb_glyph_info_t *info = &buffer->info[i];
-    hb_glyph_position_t *pos = &buffer->pos[i];
-
-    /* TODO vertical */
-    pos->x_advance = info->mask;
-    pos->x_offset = info->var1.u32;
-    pos->y_offset = info->var2.u32;
-  }
-
-  if (HB_DIRECTION_IS_BACKWARD (buffer->props.direction))
-    buffer->reverse ();
-
-  return true;
-}