130d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun/* 230d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun * Copyright 2011 Google Inc. All Rights Reserved. 330d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun * 430d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun * Licensed under the Apache License, Version 2.0 (the "License"); 530d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun * you may not use this file except in compliance with the License. 630d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun * You may obtain a copy of the License at 730d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun * 830d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun * http://www.apache.org/licenses/LICENSE-2.0 930d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun * 1030d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun * Unless required by applicable law or agreed to in writing, software 1130d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun * distributed under the License is distributed on an "AS IS" BASIS, 1230d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 1330d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun * See the License for the specific language governing permissions and 1430d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun * limitations under the License. 1530d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun */ 1630d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 1730d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun#include <limits.h> 1830d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun#include <algorithm> 1930d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun#include <functional> 2030d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 2130d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun#include "sfntly/data/font_data.h" 2230d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 2330d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurunnamespace sfntly { 2430d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 2530d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurunint32_t FontData::Size() const { 2630d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun return std::min<int32_t>(array_->Size() - bound_offset_, bound_length_); 2730d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun} 2830d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 2930d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurunbool FontData::Bound(int32_t offset, int32_t length) { 3030d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun if (offset + length > Size() || offset < 0 || length < 0) 3130d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun return false; 3230d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 3330d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun bound_offset_ += offset; 3430d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun bound_length_ = length; 3530d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun return true; 3630d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun} 3730d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 3830d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurunbool FontData::Bound(int32_t offset) { 3930d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurunif (offset > Size() || offset < 0) 4030d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun return false; 4130d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 4230d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun bound_offset_ += offset; 4330d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun return true; 4430d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun} 4530d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 4630d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurunint32_t FontData::Length() const { 4730d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun return std::min<int32_t>(array_->Length() - bound_offset_, bound_length_); 4830d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun} 4930d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 5030d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim GurunFontData::FontData(ByteArray* ba) { 5130d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun Init(ba); 5230d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun} 5330d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 5430d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim GurunFontData::FontData(FontData* data, int32_t offset, int32_t length) { 5530d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun Init(data->array_); 5630d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun Bound(data->bound_offset_ + offset, length); 5730d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun} 5830d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 5930d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim GurunFontData::FontData(FontData* data, int32_t offset) { 6030d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun Init(data->array_); 6130d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun Bound(data->bound_offset_ + offset, 6230d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun (data->bound_length_ == GROWABLE_SIZE) 6330d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun ? GROWABLE_SIZE : data->bound_length_ - offset); 6430d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun} 6530d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 6630d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim GurunFontData::~FontData() {} 6730d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 6830d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurunvoid FontData::Init(ByteArray* ba) { 6930d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun array_ = ba; 7030d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun bound_offset_ = 0; 7130d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun bound_length_ = GROWABLE_SIZE; 7230d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun} 7330d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 7430d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurunint32_t FontData::BoundOffset(int32_t offset) { 7530d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun return offset + bound_offset_; 7630d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun} 7730d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 7830d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurunint32_t FontData::BoundLength(int32_t offset, int32_t length) { 7930d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun return std::min<int32_t>(length, bound_length_ - offset); 8030d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun} 8130d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun 8230d4e1f3d81ad9f7a1aa14ce6d2ceb5df56c15cdSelim Gurun} // namespace sfntly 83