StringUtils.h revision c3849aa786db65dbda254b90b7db3b13efd98e65 
1/*
2 * Copyright (C) 2015 The Android Open Source Project
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#ifndef STRING_UTILS_H
17#define STRING_UTILS_H
18
19#include <iomanip>
20#include <iostream>
21#include <ostream>
22#include <sstream>
23#include <string>
24#include <unordered_set>
25
26#include <utils/Log.h>
27
28namespace android {
29namespace uirenderer {
30
31class unordered_string_set : public std::unordered_set<std::string> {
32public:
33    bool has(const char* str) {
34        return find(std::string(str)) != end();
35    }
36};
37
38class StringUtils {
39public:
40    static unordered_string_set split(const char* spacedList);
41};
42
43struct SizePrinter {
44    int bytes;
45    friend std::ostream& operator<<(std::ostream& stream, const SizePrinter& d) {
46        static const char* SUFFIXES[] = {"B", "KiB", "MiB"};
47        size_t suffix = 0;
48        double temp = d.bytes;
49        while (temp > 1024 && suffix < 2) {
50            temp /= 1024.0;
51            suffix++;
52        }
53        stream << std::fixed << std::setprecision(2) << temp << SUFFIXES[suffix];
54        return stream;
55    }
56};
57
58class LogcatStream: public std::ostream {
59    class LogcatStreamBuf: public std::stringbuf {
60        virtual int sync() {
61            ALOGD("%s", str().c_str());
62            str("");
63            return 0;
64        }
65    };
66
67    LogcatStreamBuf buffer;
68public:
69    LogcatStream()
70            :std::ostream(&buffer) {
71    }
72};
73
74} /* namespace uirenderer */
75} /* namespace android */
76
77#endif /* GLUTILS_H */
78