kc3-lang/harfbuzz/src/hb-ot-shape-complex-khmer.hh

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• Hash : 77792187
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  Date : 2018-10-02T18:20:16
  

  [khmer] Remove unused khmer_position()
  

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• src/hb-ot-shape-complex-khmer.hh

• /*
   * 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): Behdad Esfahbod
   */
  
  #ifndef HB_OT_SHAPE_COMPLEX_KHMER_HH
  #define HB_OT_SHAPE_COMPLEX_KHMER_HH
  
  #include "hb.hh"
  
  #include "hb-ot-shape-complex-indic.hh"
  
  
  /* buffer var allocations */
  #define khmer_category() indic_category() /* khmer_category_t */
  
  
  /* Note: This enum is duplicated in the -machine.rl source file.
   * Not sure how to avoid duplication. */
  enum khmer_category_t
  {
    OT_Robatic = 20,
    OT_Xgroup  = 21,
    OT_Ygroup  = 22,
  
    OT_VAbv    = 26,
    OT_VBlw    = 27,
    OT_VPre    = 28,
    OT_VPst    = 29,
  };
  
  static inline void
  set_khmer_properties (hb_glyph_info_t &info)
  {
    hb_codepoint_t u = info.codepoint;
    unsigned int type = hb_indic_get_categories (u);
    khmer_category_t cat = (khmer_category_t) (type & 0x7Fu);
    indic_position_t pos = (indic_position_t) (type >> 8);
  
  
    /*
     * Re-assign category
     *
     * These categories are experimentally extracted from what Uniscribe allows.
     */
    switch (u)
    {
      case 0x179Au:
        cat = (khmer_category_t) OT_Ra;
        break;
  
      case 0x17CCu:
      case 0x17C9u:
      case 0x17CAu:
        cat = OT_Robatic;
        break;
  
      case 0x17C6u:
      case 0x17CBu:
      case 0x17CDu:
      case 0x17CEu:
      case 0x17CFu:
      case 0x17D0u:
      case 0x17D1u:
        cat = OT_Xgroup;
        break;
  
      case 0x17C7u:
      case 0x17C8u:
      case 0x17DDu:
      case 0x17D3u: /* Just guessing. Uniscribe doesn't categorize it. */
        cat = OT_Ygroup;
        break;
    }
  
    /*
     * Re-assign position.
     */
    if (cat == (khmer_category_t) OT_M)
      switch ((int) pos)
      {
        case POS_PRE_C:	cat = OT_VPre; break;
        case POS_BELOW_C:	cat = OT_VBlw; break;
        case POS_ABOVE_C:	cat = OT_VAbv; break;
        case POS_POST_C:	cat = OT_VPst; break;
        default: assert (0);
      };
  
    info.khmer_category() = cat;
  }
  
  
  #endif /* HB_OT_SHAPE_COMPLEX_KHMER_HH */
  

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