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    41 

    42 #ifndef SYMBIANUTILS_JSON_H

    43 #define SYMBIANUTILS_JSON_H

    44 

    45 #include "symbianutils_global.h"

    46 

    47 #include <QtCore/QByteArray>

    48 #include <QtCore/QStringList>

    49 #include <QtCore/QVector>

    50 

    51 namespace tcftrk {

    52 

    53 class SYMBIANUTILS_EXPORT JsonValue

    54 {

    55 public:

    56     JsonValue() : m_type(Invalid) {}

    57     explicit JsonValue(const QByteArray &str) { fromString(str); }

    58 

    59     QByteArray m_name;

    60     QByteArray m_data;

    61     QList<JsonValue> m_children;

    62 

    63     enum Type {

    64         Invalid,

    65         String,

    66         Number,

    67         Boolean,

    68         Object,

    69         NullObject,

    70         Array,

    71     };

    72 

    73     Type m_type;

    74 

    75     inline Type type() const { return m_type; }

    76     inline QByteArray name() const { return m_name; }

    77     inline bool hasName(const char *name) const { return m_name == name; }

    78 

    79     inline bool isValid() const { return m_type != Invalid; }

    80     inline bool isNumber() const { return m_type == Number; }

    81     inline bool isString() const { return m_type == String; }

    82     inline bool isObject() const { return m_type == Object; }

    83     inline bool isArray() const { return m_type == Array; }

    84 

    85 

    86     inline QByteArray data() const { return m_data; }

    87     inline const QList<JsonValue> &children() const { return m_children; }

    88     inline int childCount() const { return m_children.size(); }

    89 

    90     const JsonValue &childAt(int index) const { return m_children[index]; }

    91     JsonValue &childAt(int index) { return m_children[index]; }

    92     JsonValue findChild(const char *name) const;

    93 

    94     QByteArray toString(bool multiline = false, int indent = 0) const;

    95     void fromString(const QByteArray &str);

    96     void setStreamOutput(const QByteArray &name, const QByteArray &content);

    97 

    98 private:

    99     static QByteArray parseCString(const char *&from, const char *to);

   100     static QByteArray parseNumber(const char *&from, const char *to);

   101     static QByteArray escapeCString(const QByteArray &ba);

   102     static QString escapeCString(const QString &ba);

   103     void parsePair(const char *&from, const char *to);

   104     void parseValue(const char *&from, const char *to);

   105     void parseObject(const char *&from, const char *to);

   106     void parseArray(const char *&from, const char *to);

   107 

   108     void dumpChildren(QByteArray *str, bool multiline, int indent) const;

   109 };

   110 

   111 /* Thin wrapper around QByteArray for formatting JSON input. Use as in:

   112  * JsonInputStream(byteArray) << '{' <<  "bla" << ':' << "blup" << '}';

   113  * Note that strings get double quotes and JSON-escaping, characters should be

   114  * used for the array/hash delimiters.

   115  * */

   116 class SYMBIANUTILS_EXPORT JsonInputStream {

   117 public:

   118     explicit JsonInputStream(QByteArray &a) : m_target(a) {}

   119 

   120     JsonInputStream &operator<<(char c) {  m_target.append(c); return *this; }

   121     JsonInputStream &operator<<(const char *c)  { appendCString(c); return *this; }

   122     JsonInputStream &operator<<(const QByteArray &a)  { appendCString(a.constData()); return *this; }

   123     JsonInputStream &operator<<(const QString &c) { appendString(c); return *this; }

   124 

   125     // Format as array

   126     JsonInputStream &operator<<(const QStringList &c);

   127 

   128     // Format as array

   129     JsonInputStream &operator<<(const QVector<QByteArray> &ba);

   130 

   131     JsonInputStream &operator<<(bool b);

   132 

   133     JsonInputStream &operator<<(int i)

   134         { m_target.append(QByteArray::number(i)); return *this; }

   135     JsonInputStream &operator<<(unsigned i)

   136         { m_target.append(QByteArray::number(i)); return *this; }

   137     JsonInputStream &operator<<(quint64 i)

   138         { m_target.append(QByteArray::number(i)); return *this; }

   139 

   140 private:

   141     void appendString(const QString &);

   142     void appendCString(const char *c);

   143 

   144     QByteArray &m_target;

   145 };

   146 

   147 } // namespace tcftrk

   148 

   149 #endif // SYMBIANUTILS_JSON_H