package harfbuzz: re-enable win xp support

1 files changed, 170 insertions, 0 deletions

diff --git a/src/harfbuzz-1-winxp-ugly.patch b/src/harfbuzz-1-winxp-ugly.patch
new file mode 100644
index 0000000..fbefac3
--- /dev/null
+++ b/src/harfbuzz-1-winxp-ugly.patch
@@ -0,0 +1,170 @@
+This file is part of MXE.
+See index.html for further information.
+
+This patch has been taken from:
+https://bugs.freedesktop.org/show_bug.cgi?id=55494
+
+--- harfbuzz-0.9.6/src/hb-uniscribe.cc	2012-08-18 17:59:46 +0000
++++ harfbuzz-0.9.6/src/hb-uniscribe.cc	2012-10-01 12:19:53 +0000
+@@ -315,161 +315,16 @@ retry:
+   bidi_state.uBidiLevel = HB_DIRECTION_IS_FORWARD (buffer->props.direction) ? 0 : 1;
+   bidi_state.fOverrideDirection = 1;
+ 
+-  hr = ScriptItemizeOpenType (wchars,
+-			      chars_len,
+-			      MAX_ITEMS,
+-			      &bidi_control,
+-			      &bidi_state,
+-			      items,
+-			      script_tags,
+-			      &item_count);
+-  if (unlikely (FAILED (hr)))
+     FAIL ("ScriptItemizeOpenType() failed: 0x%08xL", hr);
+ 
+ #undef MAX_ITEMS
+ 
+-  int *range_char_counts = NULL;
+-  TEXTRANGE_PROPERTIES **range_properties = NULL;
+-  int range_count = 0;
+-  if (num_features) {
+-    /* TODO setup ranges */
+-  }
+-
+-  OPENTYPE_TAG language_tag = hb_uint32_swap (hb_ot_tag_from_language (buffer->props.language));
+-
+-  unsigned int glyphs_offset = 0;
+-  unsigned int glyphs_len;
+-  bool backward = HB_DIRECTION_IS_BACKWARD (buffer->props.direction);
+-  for (unsigned int j = 0; j < item_count; j++)
+-  {
+-    unsigned int i = backward ? item_count - 1 - j : j;
+-    unsigned int chars_offset = items[i].iCharPos;
+-    unsigned int item_chars_len = items[i + 1].iCharPos - chars_offset;
+-
+-  retry_shape:
+-    hr = ScriptShapeOpenType (font_data->hdc,
+-			      &font_data->script_cache,
+-			      &items[i].a,
+-			      script_tags[i],
+-			      language_tag,
+-			      range_char_counts,
+-			      range_properties,
+-			      range_count,
+-			      wchars + chars_offset,
+-			      item_chars_len,
+-			      glyphs_size - glyphs_offset,
+-			      /* out */
+-			      log_clusters + chars_offset,
+-			      char_props + chars_offset,
+-			      glyphs + glyphs_offset,
+-			      glyph_props + glyphs_offset,
+-			      (int *) &glyphs_len);
+-
+-    if (unlikely (items[i].a.fNoGlyphIndex))
+-      FAIL ("ScriptShapeOpenType() set fNoGlyphIndex");
+-    if (unlikely (hr == E_OUTOFMEMORY))
+-    {
+-      buffer->ensure (buffer->allocated * 2);
+-      if (buffer->in_error)
+-	FAIL ("Buffer resize failed");
+-      goto retry;
+-    }
+-    if (unlikely (hr == USP_E_SCRIPT_NOT_IN_FONT))
+-    {
+-      if (items[i].a.eScript == SCRIPT_UNDEFINED)
+-	FAIL ("ScriptShapeOpenType() failed: Font doesn't support script");
+-      items[i].a.eScript = SCRIPT_UNDEFINED;
+-      goto retry_shape;
+-    }
+-    if (unlikely (FAILED (hr)))
+-    {
+-      FAIL ("ScriptShapeOpenType() failed: 0x%08xL", hr);
+-    }
+-
+-    for (unsigned int j = chars_offset; j < chars_offset + item_chars_len; j++)
+-      log_clusters[j] += glyphs_offset;
+-
+-    hr = ScriptPlaceOpenType (font_data->hdc,
+-			      &font_data->script_cache,
+-			      &items[i].a,
+-			      script_tags[i],
+-			      language_tag,
+-			      range_char_counts,
+-			      range_properties,
+-			      range_count,
+-			      wchars + chars_offset,
+-			      log_clusters + chars_offset,
+-			      char_props + chars_offset,
+-			      item_chars_len,
+-			      glyphs + glyphs_offset,
+-			      glyph_props + glyphs_offset,
+-			      glyphs_len,
+-			      /* out */
+-			      advances + glyphs_offset,
+-			      offsets + glyphs_offset,
+-			      NULL);
+-    if (unlikely (FAILED (hr)))
+-      FAIL ("ScriptPlaceOpenType() failed: 0x%08xL", hr);
+-
+-    glyphs_offset += glyphs_len;
+-  }
+-  glyphs_len = glyphs_offset;
+-
+-  /* 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 < glyphs_len; i++)
+-    vis_clusters[i] = -1;
+-  for (unsigned int i = 0; i < buffer->len; i++) {
+-    uint32_t *p = &vis_clusters[log_clusters[buffer->info[i].utf16_index()]];
+-    *p = MIN (*p, buffer->info[i].cluster);
+-  }
+-  if (!backward) {
+-    for (unsigned int i = 1; i < glyphs_len; i++)
+-      if (vis_clusters[i] == -1)
+-	vis_clusters[i] = vis_clusters[i - 1];
+-  } else {
+-    for (int i = glyphs_len - 2; i >= 0; i--)
+-      if (vis_clusters[i] == -1)
+-	vis_clusters[i] = vis_clusters[i + 1];
+-  }
+ 
+ #undef utf16_index
+ 
+-  buffer->ensure (glyphs_len);
+-  if (buffer->in_error)
+-    FAIL ("Buffer in error");
+ 
+ #undef FAIL
+ 
+-  /* Set glyph infos */
+-  buffer->len = 0;
+-  for (unsigned int i = 0; i < glyphs_len; i++)
+-  {
+-    hb_glyph_info_t *info = &buffer->info[buffer->len++];
+-
+-    info->codepoint = glyphs[i];
+-    info->cluster = vis_clusters[i];
+-
+-    /* The rest is crap.  Let's store position info there for now. */
+-    info->mask = advances[i];
+-    info->var1.u32 = offsets[i].du;
+-    info->var2.u32 = offsets[i].dv;
+-  }
+-
+-  /* Set glyph positions */
+-  buffer->clear_positions ();
+-  for (unsigned int i = 0; i < glyphs_len; 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;
+-  }
+ 
+   /* Wow, done! */
+   return true;