1/*
2 * Copyright 2011 Google Inc. All Rights Reserved.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include "sfntly/data/font_output_stream.h"
18
19#include <algorithm>
20
21namespace sfntly {
22
23FontOutputStream::FontOutputStream(OutputStream* os)
24    : stream_(os),
25      position_(0) {
26}
27
28FontOutputStream::~FontOutputStream() {
29  // Do not close, underlying stream shall clean up themselves.
30}
31
32void FontOutputStream::Write(byte_t b) {
33  if (stream_) {
34    stream_->Write(b);
35    position_++;
36  }
37}
38
39void FontOutputStream::Write(ByteVector* b) {
40  if (b) {
41    Write(b, 0, b->size());
42    position_ += b->size();
43  }
44}
45
46void FontOutputStream::Write(ByteVector* b, int32_t off, int32_t len) {
47  assert(b);
48  assert(stream_);
49  if (off < 0 || len < 0 || off + len < 0 ||
50      static_cast<size_t>(off + len) > b->size()) {
51#if !defined (SFNTLY_NO_EXCEPTION)
52    throw IndexOutOfBoundException();
53#else
54    return;
55#endif
56  }
57
58  stream_->Write(b, off, len);
59  position_ += len;
60}
61
62void FontOutputStream::Write(byte_t* b, int32_t off, int32_t len) {
63  assert(b);
64  assert(stream_);
65  if (off < 0 || len < 0 || off + len < 0) {
66#if !defined (SFNTLY_NO_EXCEPTION)
67    throw IndexOutOfBoundException();
68#else
69    return;
70#endif
71  }
72
73  stream_->Write(b, off, len);
74  position_ += len;
75}
76
77void FontOutputStream::WriteChar(byte_t c) {
78  Write(c);
79}
80
81void FontOutputStream::WriteUShort(int32_t us) {
82  Write((byte_t)((us >> 8) & 0xff));
83  Write((byte_t)(us & 0xff));
84}
85
86void FontOutputStream::WriteShort(int32_t s) {
87  WriteUShort(s);
88}
89
90void FontOutputStream::WriteUInt24(int32_t ui) {
91  Write((byte_t)(ui >> 16) & 0xff);
92  Write((byte_t)(ui >> 8) & 0xff);
93  Write((byte_t)ui & 0xff);
94}
95
96void FontOutputStream::WriteULong(int64_t ul) {
97  Write((byte_t)((ul >> 24) & 0xff));
98  Write((byte_t)((ul >> 16) & 0xff));
99  Write((byte_t)((ul >> 8) & 0xff));
100  Write((byte_t)(ul & 0xff));
101}
102
103void FontOutputStream::WriteLong(int64_t l) {
104  WriteULong(l);
105}
106
107void FontOutputStream::WriteFixed(int32_t f) {
108  WriteULong(f);
109}
110
111void FontOutputStream::WriteDateTime(int64_t date) {
112  WriteULong((date >> 32) & 0xffffffff);
113  WriteULong(date & 0xffffffff);
114}
115
116void FontOutputStream::Flush() {
117  if (stream_) {
118    stream_->Flush();
119  }
120}
121
122void FontOutputStream::Close() {
123  if (stream_) {
124    stream_->Flush();
125    stream_->Close();
126    position_ = 0;
127  }
128}
129
130}  // namespace sfntly
131