| /* |
| * 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 "sfntly/data/writable_font_data.h" |
| |
| #include <algorithm> |
| |
| #include "sfntly/data/memory_byte_array.h" |
| #include "sfntly/data/growable_memory_byte_array.h" |
| |
| namespace sfntly { |
| |
| WritableFontData::WritableFontData(ByteArray* ba) : ReadableFontData(ba) { |
| } |
| |
| WritableFontData::~WritableFontData() {} |
| |
| // static |
| CALLER_ATTACH |
| WritableFontData* WritableFontData::CreateWritableFontData(int32_t length) { |
| ByteArrayPtr ba; |
| if (length > 0) { |
| ba = new MemoryByteArray(length); |
| ba->SetFilledLength(length); |
| } else { |
| ba = new GrowableMemoryByteArray(); |
| } |
| WritableFontDataPtr wfd = new WritableFontData(ba); |
| return wfd.Detach(); |
| } |
| |
| // TODO(arthurhsu): re-investigate the memory model of this function. It's |
| // not too useful without copying, but it's not performance |
| // savvy to do copying. |
| CALLER_ATTACH |
| WritableFontData* WritableFontData::CreateWritableFontData(ByteVector* b) { |
| ByteArrayPtr ba = new GrowableMemoryByteArray(); |
| ba->Put(0, b); |
| WritableFontDataPtr wfd = new WritableFontData(ba); |
| return wfd.Detach(); |
| } |
| |
| int32_t WritableFontData::WriteByte(int32_t index, byte_t b) { |
| array_->Put(BoundOffset(index), b); |
| return 1; |
| } |
| |
| int32_t WritableFontData::WriteBytes(int32_t index, |
| byte_t* b, |
| int32_t offset, |
| int32_t length) { |
| return array_->Put(BoundOffset(index), |
| b, |
| offset, |
| BoundLength(index, length)); |
| } |
| |
| int32_t WritableFontData::WriteBytes(int32_t index, ByteVector* b) { |
| assert(b); |
| return WriteBytes(index, &((*b)[0]), 0, b->size()); |
| } |
| |
| int32_t WritableFontData::WriteBytesPad(int32_t index, |
| ByteVector* b, |
| int32_t offset, |
| int32_t length, |
| byte_t pad) { |
| int32_t written = |
| array_->Put(BoundOffset(index), |
| &((*b)[0]), |
| offset, |
| BoundLength(index, |
| std::min<int32_t>(length, b->size() - offset))); |
| written += WritePadding(written + index, length - written, pad); |
| return written; |
| } |
| |
| int32_t WritableFontData::WritePadding(int32_t index, int32_t count) { |
| return WritePadding(index, count, (byte_t)0); |
| } |
| |
| int32_t WritableFontData::WritePadding(int32_t index, int32_t count, |
| byte_t pad) { |
| for (int32_t i = 0; i < count; ++i) { |
| array_->Put(index + i, pad); |
| } |
| return count; |
| } |
| |
| int32_t WritableFontData::WriteChar(int32_t index, byte_t c) { |
| return WriteByte(index, c); |
| } |
| |
| int32_t WritableFontData::WriteUShort(int32_t index, int32_t us) { |
| WriteByte(index, (byte_t)((us >> 8) & 0xff)); |
| WriteByte(index + 1, (byte_t)(us & 0xff)); |
| return 2; |
| } |
| |
| int32_t WritableFontData::WriteUShortLE(int32_t index, int32_t us) { |
| WriteByte(index, (byte_t)(us & 0xff)); |
| WriteByte(index + 1, (byte_t)((us >> 8) & 0xff)); |
| return 2; |
| } |
| |
| int32_t WritableFontData::WriteShort(int32_t index, int32_t s) { |
| return WriteUShort(index, s); |
| } |
| |
| int32_t WritableFontData::WriteUInt24(int32_t index, int32_t ui) { |
| WriteByte(index, (byte_t)((ui >> 16) & 0xff)); |
| WriteByte(index + 1, (byte_t)((ui >> 8) & 0xff)); |
| WriteByte(index + 2, (byte_t)(ui & 0xff)); |
| return 3; |
| } |
| |
| int32_t WritableFontData::WriteULong(int32_t index, int64_t ul) { |
| WriteByte(index, (byte_t)((ul >> 24) & 0xff)); |
| WriteByte(index + 1, (byte_t)((ul >> 16) & 0xff)); |
| WriteByte(index + 2, (byte_t)((ul >> 8) & 0xff)); |
| WriteByte(index + 3, (byte_t)(ul & 0xff)); |
| return 4; |
| } |
| |
| int32_t WritableFontData::WriteULongLE(int32_t index, int64_t ul) { |
| WriteByte(index, (byte_t)(ul & 0xff)); |
| WriteByte(index + 1, (byte_t)((ul >> 8) & 0xff)); |
| WriteByte(index + 2, (byte_t)((ul >> 16) & 0xff)); |
| WriteByte(index + 3, (byte_t)((ul >> 24) & 0xff)); |
| return 4; |
| } |
| |
| int32_t WritableFontData::WriteLong(int32_t index, int64_t l) { |
| return WriteULong(index, l); |
| } |
| |
| int32_t WritableFontData::WriteFixed(int32_t index, int32_t f) { |
| return WriteLong(index, f); |
| } |
| |
| int32_t WritableFontData::WriteDateTime(int32_t index, int64_t date) { |
| WriteULong(index, (date >> 32) & 0xffffffff); |
| WriteULong(index + 4, date & 0xffffffff); |
| return 8; |
| } |
| |
| void WritableFontData::CopyFrom(InputStream* is, int32_t length) { |
| array_->CopyFrom(is, length); |
| } |
| |
| void WritableFontData::CopyFrom(InputStream* is) { |
| array_->CopyFrom(is); |
| } |
| |
| CALLER_ATTACH FontData* WritableFontData::Slice(int32_t offset, |
| int32_t length) { |
| if (offset < 0 || offset + length > Size()) { |
| #if !defined (SFNTLY_NO_EXCEPTION) |
| throw IndexOutOfBoundsException( |
| "Attempt to bind data outside of its limits"); |
| #endif |
| return NULL; |
| } |
| FontDataPtr slice = new WritableFontData(this, offset, length); |
| return slice.Detach(); |
| } |
| |
| CALLER_ATTACH FontData* WritableFontData::Slice(int32_t offset) { |
| if (offset > Size()) { |
| #if !defined (SFNTLY_NO_EXCEPTION) |
| throw IndexOutOfBoundsException( |
| "Attempt to bind data outside of its limits"); |
| #endif |
| return NULL; |
| } |
| FontDataPtr slice = new WritableFontData(this, offset); |
| return slice.Detach(); |
| } |
| |
| WritableFontData::WritableFontData(WritableFontData* data, int32_t offset) |
| : ReadableFontData(data, offset) { |
| } |
| |
| WritableFontData::WritableFontData(WritableFontData* data, |
| int32_t offset, |
| int32_t length) |
| : ReadableFontData(data, offset, length) { |
| } |
| |
| } // namespace sfntly |