/usr/include/dballe/core/json.h is in libdballe-dev 7.7-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 | #ifndef DBALLE_CORE_JSON_H
#define DBALLE_CORE_JSON_H
#include <wreport/varinfo.h>
#include <wreport/var.h>
#include <dballe/core/defs.h>
#include <vector>
#include <ostream>
#include <istream>
namespace dballe {
namespace core {
/**
* JSON serializer
*
* It is called with a sequence of sax-like events, and appends the resulting
* JSON to a string.
*
* The JSON output is all in one line, so that end of line can be used as
* separator between distinct JSON records.
*/
class JSONWriter
{
protected:
enum State {
LIST_FIRST,
LIST,
MAPPING_KEY_FIRST,
MAPPING_KEY,
MAPPING_VAL,
};
std::ostream& out;
std::vector<State> stack;
/// Append whatever separator is needed (if any) before a new value
void val_head();
void jputc(char c);
void jputs(const char* s);
public:
JSONWriter(std::ostream& out);
~JSONWriter();
/**
* Reset the serializer state, to cancel the current output and prepare for
* a new one
*/
void reset();
void start_list();
void end_list();
void start_mapping();
void end_mapping();
void add_null();
void add_bool(bool val);
void add_int(int val);
void add_double(double val);
void add_cstring(const char* val);
void add_string(const std::string& val);
void add_number(const std::string& val);
void add_level(const Level& val);
void add_trange(const Trange& val);
void add_datetime(const Datetime& val);
void add_coords(const Coords& val);
void add_var(const wreport::Var& val);
void add_break();
void add(const std::string& val) { add_string(val); }
void add(const char* val) { add_cstring(val); }
void add(double val) { add_double(val); }
void add(int val) { add_int(val); }
void add(bool val) { add_bool(val); }
void add(wreport::Varcode val) { add_int(val); }
void add(const Level& val) { add_level(val); }
void add(const Trange& val) { add_trange(val); }
void add(const Datetime& val) { add_datetime(val); }
void add(const Coords& val) { add_coords(val); }
void add(const wreport::Var& val) { add_var(val); }
template<typename T>
void add(const char* a, T b)
{
add_cstring(a);
add(b);
}
template<typename T>
void add_list(const T& val)
{
start_list();
for (const auto& i : val)
add(i);
end_list();
}
};
/**
* JSON sax-like parser.
*/
class JSONReader {
public:
virtual void on_start_list() = 0;
virtual void on_end_list() = 0;
virtual void on_start_mapping() = 0;
virtual void on_end_mapping() = 0;
virtual void on_add_null() = 0;
virtual void on_add_bool(bool val) = 0;
virtual void on_add_int(int val) = 0;
virtual void on_add_double(double val) = 0;
virtual void on_add_string(const std::string& val) = 0;
// Parse a stream
void parse(std::istream& in);
};
}
}
#endif
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