blob: d055d4e3f4318cb93150183d0eb4f30483042384 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
/*
* Copyright (C) 2012 The Android Open Source Project
*
* 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.
*/
#ifndef ART_RUNTIME_INDENTER_H_
#define ART_RUNTIME_INDENTER_H_
#include "base/logging.h"
#include "base/macros.h"
#include <streambuf>
const char kIndentChar =' ';
const size_t kIndentBy1Count = 2;
class Indenter : public std::streambuf {
public:
Indenter(std::streambuf* out, char text, size_t count)
: indent_next_(true), out_sbuf_(out), text_(text), count_(count) {}
private:
int_type overflow(int_type c) {
if (UNLIKELY(c == std::char_traits<char>::eof())) {
out_sbuf_->pubsync();
return c;
}
if (indent_next_) {
for (size_t i = 0; i < count_; ++i) {
int_type r = out_sbuf_->sputc(text_);
if (UNLIKELY(r != text_)) {
out_sbuf_->pubsync();
r = out_sbuf_->sputc(text_);
CHECK_EQ(r, text_) << "Error writing to buffer. Disk full?";
}
}
}
indent_next_ = (c == '\n');
int_type r = out_sbuf_->sputc(c);
if (UNLIKELY(r != c)) {
out_sbuf_->pubsync();
r = out_sbuf_->sputc(c);
CHECK_EQ(r, c) << "Error writing to buffer. Disk full?";
}
return r;
}
int sync() {
return out_sbuf_->pubsync();
}
bool indent_next_;
// Buffer to write output to.
std::streambuf* const out_sbuf_;
// Text output as indent.
const char text_;
// Number of times text is output.
const size_t count_;
DISALLOW_COPY_AND_ASSIGN(Indenter);
};
#endif // ART_RUNTIME_INDENTER_H_
|
