kc3-lang/harfbuzz/src/hb-ot-maxp-table.hh

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• Hash : 3ab7d264
  Author :
  Date : 2018-02-14T15:48:57
  

  [subset] Fix memory leak in hb-ot-{maxp,os2}. Plus some formatting.
  

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• src/hb-ot-maxp-table.hh

• /*
   * 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.
   *
   * Google Author(s): Behdad Esfahbod
   */
  
  #ifndef HB_OT_MAXP_TABLE_HH
  #define HB_OT_MAXP_TABLE_HH
  
  #include "hb-open-type-private.hh"
  #include "hb-subset-plan.hh"
  
  namespace OT {
  
  
  /*
   * maxp -- The Maximum Profile Table
   */
  
  #define HB_OT_TAG_maxp HB_TAG('m','a','x','p')
  
  struct maxp
  {
    static const hb_tag_t tableTag	= HB_OT_TAG_maxp;
  
    inline unsigned int get_num_glyphs (void) const
    {
      return numGlyphs;
    }
  
    inline void set_num_glyphs (unsigned int count)
    {
      numGlyphs.set (count);
    }
  
    inline bool sanitize (hb_sanitize_context_t *c) const
    {
      TRACE_SANITIZE (this);
      return_trace (c->check_struct (this) &&
  		  likely (version.major == 1 ||
  			  (version.major == 0 && version.minor == 0x5000u)));
    }
  
    inline bool subset (hb_subset_plan_t *plan) const
    {
      hb_blob_t *maxp_blob = OT::Sanitizer<OT::maxp>().sanitize (hb_face_reference_table (plan->source, HB_OT_TAG_maxp));
      // TODO(grieger): hb_blob_copy_writable_or_fail
      hb_blob_t *maxp_prime_blob = hb_blob_create_sub_blob (maxp_blob, 0, -1);
      hb_blob_destroy (maxp_blob);
  
      OT::maxp *maxp_prime = (OT::maxp *) hb_blob_get_data_writable (maxp_prime_blob, nullptr);
      if (unlikely (!maxp_prime)) {
        hb_blob_destroy (maxp_prime_blob);
        return false;
      }
  
      maxp_prime->set_num_glyphs (plan->gids_to_retain_sorted.len);
  
      bool result = hb_subset_plan_add_table(plan, HB_OT_TAG_maxp, maxp_prime_blob);
      hb_blob_destroy (maxp_prime_blob);
      return result;
    }
  
    /* We only implement version 0.5 as none of the extra fields in version 1.0 are useful. */
    protected:
    FixedVersion<>version;		/* Version of the maxp table (0.5 or 1.0),
  					 * 0x00005000u or 0x00010000u. */
    HBUINT16	numGlyphs;		/* The number of glyphs in the font. */
    public:
    DEFINE_SIZE_STATIC (6);
  };
  
  
  } /* namespace OT */
  
  
  #endif /* HB_OT_MAXP_TABLE_HH */
  

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