1 /*
2  * Copyright (c) 2024 Huawei Device Co., Ltd.
3  * Licensed under the Apache License, Version 2.0 (the "License");
4  * you may not use this file except in compliance with the License.
5  * You may obtain a copy of the License at
6  *
7  *     http://www.apache.org/licenses/LICENSE-2.0
8  *
9  * Unless required by applicable law or agreed to in writing, software
10  * distributed under the License is distributed on an "AS IS" BASIS,
11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12  * See the License for the specific language governing permissions and
13  * limitations under the License.
14  */
15 
16 #ifndef OHOS_IDL_FILE_H
17 #define OHOS_IDL_FILE_H
18 
19 #include <cstdio>
20 #include <set>
21 #include <string>
22 
23 namespace OHOS {
24 namespace Idl {
25 class File {
26 public:
27     File(const std::string &path, unsigned int mode);
28 
29     ~File();
30 
31     void OpenByRead(const std::string &path);
32 
IsValid()33     inline bool IsValid() const
34     {
35         return fd_ != nullptr;
36     }
37 
GetPath()38     inline std::string GetPath() const
39     {
40         return path_;
41     }
42 
43     char GetChar();
44 
45     char PeekChar();
46 
47     bool IsEof() const;
48 
GetCharLineNumber()49     inline size_t GetCharLineNumber() const
50     {
51         return lineNo_;
52     }
53 
GetCharColumnNumber()54     inline size_t GetCharColumnNumber() const
55     {
56         return columnNo_;
57     }
58 
59     size_t ReadData(void *data, size_t size) const;
60 
61     bool WriteData(const void *data, size_t size) const;
62 
63     void Flush() const;
64 
65     bool Reset() const;
66 
67     bool Skip(long size) const;
68 
69     void Close();
70 
71     static bool CreateParentDir(const std::string &path);
72 
73     static bool CreatePartDir(const std::string &partPath);
74 
75     static std::string AdapterPath(const std::string &path);
76 
77     static std::string AdapterRealPath(const std::string &path);
78 
79     static std::string RealPath(const std::string &path);
80 
81     static bool CheckValid(const std::string &path);
82 
83     static std::set<std::string> FindFiles(const std::string &rootDir);
84 
85     size_t GetHashKey();
86 
87     static constexpr unsigned int READ = 0x1;
88     static constexpr unsigned int WRITE = 0x2;
89     static constexpr unsigned int APPEND = 0x4;
90 
91 private:
92     size_t Read();
93 
94     static constexpr int BUFFER_SIZE = 1024;
95 
96     char buffer_[BUFFER_SIZE] = {0};
97     size_t size_ = 0;
98     size_t position_ = 0;
99     size_t columnNo_ = 1;
100     size_t lineNo_ = 1;
101     bool isEof_ = false;
102     bool isError_ = false;
103 
104     FILE *fd_ = nullptr;
105     std::string path_;
106     unsigned int mode_ = 0;
107 };
108 } // namespace Idl
109 } // namespace OHOS
110 
111 #endif // OHOS_IDL_FILE_H