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 
28 namespace android {
29 namespace uirenderer {
30 
31 class unordered_string_set : public std::unordered_set<std::string> {
32 public:
has(const char * str)33     bool has(const char* str) { return find(std::string(str)) != end(); }
34 };
35 
36 class StringUtils {
37 public:
38     static unordered_string_set split(const char* spacedList);
39 };
40 
41 struct SizePrinter {
42     int bytes;
43     friend std::ostream& operator<<(std::ostream& stream, const SizePrinter& d) {
44         static const char* SUFFIXES[] = {"B", "KiB", "MiB"};
45         size_t suffix = 0;
46         double temp = d.bytes;
47         while (temp > 1024 && suffix < 2) {
48             temp /= 1024.0;
49             suffix++;
50         }
51         stream << std::fixed << std::setprecision(2) << temp << SUFFIXES[suffix];
52         return stream;
53     }
54 };
55 
56 class LogcatStream : public std::ostream {
57     class LogcatStreamBuf : public std::stringbuf {
sync()58         virtual int sync() {
59             ALOGD("%s", str().c_str());
60             str("");
61             return 0;
62         }
63     };
64 
65     LogcatStreamBuf buffer;
66 
67 public:
LogcatStream()68     LogcatStream() : std::ostream(&buffer) {}
69 };
70 
71 } /* namespace uirenderer */
72 } /* namespace android */
73 
74 #endif /* GLUTILS_H */
75