text: /*
   * Copyright 2011 Google Inc. All Rights Reserved.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  #include <limits.h>
  #include <algorithm>
  #include <functional>
  
  #include "sfntly/data/font_data.h"
  
  namespace sfntly {
  
  int32_t FontData::Size() const {
    return std::min<int32_t>(array_->Size() - bound_offset_, bound_length_);
  }
  
  bool FontData::Bound(int32_t offset, int32_t length) {
    if (offset + length > Size() || offset < 0 || length < 0)
      return false;
  
    bound_offset_ += offset;
    bound_length_ = length;
    return true;
  }
  
  bool FontData::Bound(int32_t offset) {
  if (offset > Size() || offset < 0)
      return false;
  
    bound_offset_ += offset;
    return true;
  }
  
  int32_t FontData::Length() const {
    return std::min<int32_t>(array_->Length() - bound_offset_, bound_length_);
  }
  
  FontData::FontData(ByteArray* ba) {
    Init(ba);
  }
  
  FontData::FontData(FontData* data, int32_t offset, int32_t length) {
    Init(data->array_);
    Bound(data->bound_offset_ + offset, length);
  }
  
  FontData::FontData(FontData* data, int32_t offset) {
    Init(data->array_);
    Bound(data->bound_offset_ + offset,
          (data->bound_length_ == GROWABLE_SIZE)
              ? GROWABLE_SIZE : data->bound_length_ - offset);
  }
  
  FontData::~FontData() {}
  
  void FontData::Init(ByteArray* ba) {
    array_ = ba;
    bound_offset_ = 0;
    bound_length_ = GROWABLE_SIZE;
  }
  
  int32_t FontData::BoundOffset(int32_t offset) {
    return offset + bound_offset_;
  }
  
  int32_t FontData::BoundLength(int32_t offset, int32_t length) {
    return std::min<int32_t>(length, bound_length_ - offset);
  }
  
  }  // namespace sfntly
  