libdballe  9.4
core/file.h
1 #ifndef DBA_CORE_FILE_H
2 #define DBA_CORE_FILE_H
3 
4 #include <dballe/file.h>
5 #include <dballe/core/defs.h>
6 #include <memory>
7 #include <string>
8 #include <cstdio>
9 #include <functional>
10 
11 namespace dballe {
12 namespace core {
13 
15 class File : public dballe::File
16 {
17 protected:
19  std::string m_name;
21  FILE* fd;
25  int idx;
26 
27 public:
28  File(const std::string& name, FILE* fd, bool close_on_exit=true);
29  virtual ~File();
30 
31  std::string pathname() const override { return m_name; }
32  void close() override;
33  bool foreach(std::function<bool(const BinaryMessage&)> dest) override;
34 
40  static std::string resolve_test_data_file(const std::string& name);
41 
47  static std::unique_ptr<dballe::File> open_test_data_file(Encoding type, const std::string& name);
48 };
49 
51 {
52 public:
53  BufrFile(const std::string& name, FILE* fd, bool close_on_exit=true)
54  : File(name, fd, close_on_exit) {}
55 
56  Encoding encoding() const override { return Encoding::BUFR; }
57  BinaryMessage read() override;
58  void write(const std::string& msg) override;
59 };
60 
62 {
63 public:
64  CrexFile(const std::string& name, FILE* fd, bool close_on_exit=true)
65  : File(name, fd, close_on_exit) {}
66 
67  Encoding encoding() const override { return Encoding::CREX; }
68  BinaryMessage read() override;
69  void write(const std::string& msg) override;
70 };
71 
73 {
74 public:
75  JsonFile(const std::string& name, FILE* fd, bool close_on_exit=true)
76  : File(name, fd, close_on_exit) {}
77 
78  Encoding encoding() const override { return Encoding::JSON; }
79  BinaryMessage read() override;
80  void write(const std::string& msg) override;
81 };
82 
83 }
84 }
85 #endif
Binary message.
Definition: file.h:131
File object for doing I/O on binary message streams.
Definition: file.h:18
Definition: core/file.h:51
BinaryMessage read() override
Read a message from the file.
Encoding encoding() const override
Get the file encoding.
Definition: core/file.h:56
void write(const std::string &msg) override
Append the binary message to the file.
Definition: core/file.h:62
BinaryMessage read() override
Read a message from the file.
void write(const std::string &msg) override
Append the binary message to the file.
Encoding encoding() const override
Get the file encoding.
Definition: core/file.h:67
Base for dballe::File implementations.
Definition: core/file.h:16
static std::unique_ptr< dballe::File > open_test_data_file(Encoding type, const std::string &name)
Open a test data file.
FILE * fd
FILE structure used to read or write to the file.
Definition: core/file.h:21
std::string pathname() const override
Get the file pathname.
Definition: core/file.h:31
std::string m_name
Name of the file.
Definition: core/file.h:19
int idx
Index of the last message read from the file or written to the file.
Definition: core/file.h:25
static std::string resolve_test_data_file(const std::string &name)
Resolve the location of a test data file.
bool close_on_exit
True if fd should be closed on destruction.
Definition: core/file.h:23
void close() override
Close the underlying file.
Definition: core/file.h:73
void write(const std::string &msg) override
Append the binary message to the file.
BinaryMessage read() override
Read a message from the file.
Encoding encoding() const override
Get the file encoding.
Definition: core/file.h:78
Common definitions.