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/*
* 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 "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
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