MPD  0.20.18
Block.hxx
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1 /*
2  * Copyright 2003-2017 The Music Player Daemon Project
3  * http://www.musicpd.org
4  *
5  * This program is free software; you can redistribute it and/or modify
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18  */
19 
20 #ifndef MPD_CONFIG_BLOCK_HXX
21 #define MPD_CONFIG_BLOCK_HXX
22 
23 #include "check.h"
24 #include "Param.hxx"
25 #include "Compiler.h"
26 
27 #include <string>
28 #include <vector>
29 
30 class AllocatedPath;
31 
32 struct BlockParam {
33  std::string name;
34  std::string value;
35  int line;
36 
41  mutable bool used;
42 
44  BlockParam(const char *_name, const char *_value, int _line=-1)
45  :name(_name), value(_value), line(_line), used(false) {}
46 
47  int GetIntValue() const;
48 
49  unsigned GetUnsignedValue() const;
50 
51  bool GetBoolValue() const;
52 };
53 
54 struct ConfigBlock {
60 
61  int line;
62 
63  std::vector<BlockParam> block_params;
64 
69  bool used;
70 
71  explicit ConfigBlock(int _line=-1)
72  :next(nullptr), line(_line), used(false) {}
73 
74  ConfigBlock(const ConfigBlock &) = delete;
75 
76  ~ConfigBlock();
77 
78  ConfigBlock &operator=(const ConfigBlock &) = delete;
79 
85  bool IsNull() const noexcept {
86  return line < 0;
87  }
88 
89  gcc_pure
90  bool IsEmpty() const noexcept {
91  return block_params.empty();
92  }
93 
95  void AddBlockParam(const char *_name, const char *_value,
96  int _line=-1) {
97  block_params.emplace_back(_name, _value, _line);
98  }
99 
101  const BlockParam *GetBlockParam(const char *_name) const noexcept;
102 
103  gcc_pure
104  const char *GetBlockValue(const char *name,
105  const char *default_value=nullptr) const noexcept;
106 
113  AllocatedPath GetPath(const char *name,
114  const char *default_value=nullptr) const;
115 
116  int GetBlockValue(const char *name, int default_value) const;
117 
118  unsigned GetBlockValue(const char *name, unsigned default_value) const;
119 
120  bool GetBlockValue(const char *name, bool default_value) const;
121 };
122 
123 #endif
std::string name
Definition: Block.hxx:33
#define gcc_nonnull_all
Definition: Compiler.h:122
int GetIntValue() const
bool GetBoolValue() const
A path name in the native file system character set.
gcc_nonnull_all BlockParam(const char *_name, const char *_value, int _line=-1)
Definition: Block.hxx:44
ConfigBlock * next
The next ConfigBlock with the same name.
Definition: Block.hxx:59
gcc_nonnull_all void AddBlockParam(const char *_name, const char *_value, int _line=-1)
Definition: Block.hxx:95
bool used
This flag is false when nobody has queried the value of this option yet.
Definition: Block.hxx:69
std::string value
Definition: Block.hxx:34
gcc_pure const char * GetBlockValue(const char *name, const char *default_value=nullptr) const noexcept
gcc_pure bool IsEmpty() const noexcept
Definition: Block.hxx:90
int line
Definition: Block.hxx:61
ConfigBlock & operator=(const ConfigBlock &)=delete
unsigned GetUnsignedValue() const
ConfigBlock(int _line=-1)
Definition: Block.hxx:71
bool used
This flag is false when nobody has queried the value of this option yet.
Definition: Block.hxx:41
AllocatedPath GetPath(const char *name, const char *default_value=nullptr) const
Same as config_get_path(), but looks up the setting in the specified block.
#define gcc_pure
Definition: Compiler.h:116
int line
Definition: Block.hxx:35
gcc_nonnull_all gcc_pure const BlockParam * GetBlockParam(const char *_name) const noexcept
bool IsNull() const noexcept
Determine if this is a "null" instance, i.e.
Definition: Block.hxx:85
std::vector< BlockParam > block_params
Definition: Block.hxx:63
const Partition const char * name
Definition: Count.hxx:34