kc3-lang/harfbuzz/src/hb-subset-table-cff.cc

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• Hash : b87d866b
  Author :
  Date : 2025-07-25T03:21:46
  

  Fix HB_TINY `ninja -Cbuild libs` with experimental_api=true
  

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• src/hb-subset-table-cff.cc

• #include "hb-subset-table.hh"
  
  #include "hb-ot-cff1-table.hh"
  #include "hb-ot-cff2-table.hh"
  #include "hb-ot-vorg-table.hh"
  
  
  #ifndef HB_NO_SUBSET_CFF
  template<>
  struct hb_subset_plan_t::source_table_loader<const OT::cff1>
  {
    auto operator () (hb_subset_plan_t *plan)
    HB_AUTO_RETURN (plan->accelerator ? plan->accelerator->cff1_accel :
  		  plan->inprogress_accelerator ? plan->inprogress_accelerator->cff1_accel :
  		  plan->cff1_accel)
  };
  template<>
  struct hb_subset_plan_t::source_table_loader<const OT::cff2>
  {
    auto operator () (hb_subset_plan_t *plan)
    HB_AUTO_RETURN (plan->accelerator ? plan->accelerator->cff2_accel :
  		  plan->inprogress_accelerator ? plan->inprogress_accelerator->cff2_accel :
  		  plan->cff2_accel)
  };
  #endif
  
  
  bool _hb_subset_table_cff		(hb_subset_plan_t *plan, hb_vector_t<char> &buf, hb_tag_t tag, bool *success)
  {
  #ifndef HB_NO_SUBSET_CFF
    switch (tag)
    {
    case HB_TAG('C','F','F',' '): *success = _hb_subset_table<const OT::cff1> (plan, buf); return true;
    case HB_TAG('C','F','F','2'): *success = _hb_subset_table<const OT::cff2> (plan, buf); return true;
    case HB_TAG('V','O','R','G'): *success = _hb_subset_table<const OT::VORG> (plan, buf); return true;
    }
  #endif
    return false;
  }
  
  
  #ifdef HB_EXPERIMENTAL_API
  #ifndef HB_NO_CFF
  
  template<typename accel_t>
  static hb_blob_t* get_charstrings_data(accel_t& accel, hb_codepoint_t glyph_index) {
    if (!accel.is_valid()) {
      return hb_blob_get_empty ();
    }
  
    hb_ubytes_t bytes = (*accel.charStrings)[glyph_index];
    if (!bytes) {
      return hb_blob_get_empty ();
    }
  
    hb_blob_t* cff_blob = accel.get_blob();
    uint32_t length;
    const char* cff_data = hb_blob_get_data(cff_blob, &length) ;
  
    long int offset = (const char*) bytes.arrayZ - cff_data;
    if (offset < 0 || offset > INT32_MAX) {
      return hb_blob_get_empty ();
    }
  
    return hb_blob_create_sub_blob(cff_blob, (uint32_t) offset, bytes.length);
  }
  
  template<typename accel_t>
  static hb_blob_t* get_charstrings_index(accel_t& accel) {
    if (!accel.is_valid()) {
      return hb_blob_get_empty ();
    }
  
    const char* charstrings_start = (const char*) accel.charStrings;
    unsigned charstrings_length = accel.charStrings->get_size();
  
    hb_blob_t* cff_blob = accel.get_blob();
    uint32_t length;
    const char* cff_data = hb_blob_get_data(cff_blob, &length) ;
  
    long int offset = charstrings_start - cff_data;
    if (offset < 0 || offset > INT32_MAX) {
      return hb_blob_get_empty ();
    }
  
    return hb_blob_create_sub_blob(cff_blob, (uint32_t) offset, charstrings_length);
  }
  
  /**
   * hb_subset_cff_get_charstring_data:
   * @face: A face object
   * @glyph_index: Glyph index to get data for.
   *
   * Returns the raw outline data from the CFF/CFF2 table associated with the given glyph index.
   *
   * XSince: EXPERIMENTAL
   **/
  HB_EXTERN hb_blob_t*
  hb_subset_cff_get_charstring_data(hb_face_t* face, hb_codepoint_t glyph_index) {
    return get_charstrings_data(*face->table.cff1, glyph_index);
  }
  
  /**
   * hb_subset_cff_get_charstrings_index:
   * @face: A face object
   *
   * Returns the raw CFF CharStrings INDEX from the CFF table.
   *
   * XSince: EXPERIMENTAL
   **/
  HB_EXTERN hb_blob_t*
  hb_subset_cff_get_charstrings_index (hb_face_t* face) {
    return get_charstrings_index (*face->table.cff1);
  }
  
  /**
   * hb_subset_cff2_get_charstring_data:
   * @face: A face object
   * @glyph_index: Glyph index to get data for.
   *
   * Returns the raw outline data from the CFF/CFF2 table associated with the given glyph index.
   *
   * XSince: EXPERIMENTAL
   **/
  HB_EXTERN hb_blob_t*
  hb_subset_cff2_get_charstring_data(hb_face_t* face, hb_codepoint_t glyph_index) {
    return get_charstrings_data(*face->table.cff2, glyph_index);
  }
  
  /**
   * hb_subset_cff2_get_charstrings_index:
   * @face: A face object
   *
   * Returns the raw CFF2 CharStrings INDEX from the CFF2 table.
   *
   * XSince: EXPERIMENTAL
   **/
  HB_EXTERN hb_blob_t*
  hb_subset_cff2_get_charstrings_index (hb_face_t* face) {
    return get_charstrings_index (*face->table.cff2);
  }
  #endif
  #endif
  

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