97 lines
2.5 KiB
C++
97 lines
2.5 KiB
C++
#ifndef __JString_h__
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#define __JString_h__
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#include "MString.h"
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#include <iostream>
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#include <sstream>
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namespace coreutils {
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///
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/// Use the JString object when you need a JSON interface to C++. JString uses
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/// an MString to store a JSON string representing the object(s) contained.
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/// The [] operator is overriden from the ZString and provides a method to
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/// access the objects elements using a named path as the index to the items.
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///
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/// JString default constructor will create an empty JString object pointing
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/// to an empty string.
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///
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/// Use a constructor or assignment operator to initialize a JString to an
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/// initial JSON string.
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///
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/// Several constructors are available including a handle to a std::FILE
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/// object to initialize the JSON string. On destruction the file is saved back.
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///
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/// The [] operator can be used to access elements within the JSON string.
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/// Use:
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/// jstring["key"] = "value";
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/// std::cout << jstring["key"];
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///
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class JString : public MString {
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public:
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JString();
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void set(ZString &path, ZString &value);
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///
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/// Use the find method to look through an object for member specified by
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/// the key in parameter 1. The cursor must be pointing to the { character
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/// that begins the object's list.
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///
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ZString find(ZString &path);
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bool locate(ZString &path);
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bool notfirst;
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ZString path;
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class Proxy {
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public:
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Proxy(JString &jstring, ZString key) : jstring(jstring), key(key) {}
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friend std::ostream &operator<<(std::ostream &os, const Proxy &proxy);
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operator coreutils::ZString () {
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// std::cout << "operator to ZString: " << key << std::endl;
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return jstring.find(key);
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}
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operator coreutils::MString () {
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// std::cout << "operator to MString: " << key << std::endl;
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return jstring.find(key);
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}
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Proxy& operator=(coreutils::ZString value) {
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// std::cout << "proxy operator=" << value << std::endl;
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jstring.set(key, value);
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return *this;
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}
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private:
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JString &jstring;
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ZString key;
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};
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Proxy operator[](coreutils::ZString key) {
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// std::cout << "operator[" << key << "]" << std::endl;
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return Proxy(*this, key);
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}
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JString & operator=(coreutils:: ZString value) {
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std::cout << "operator=" << value << std::endl;
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setSize(value.getLength());
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memcpy(data, value.getData(), value.getLength());
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length = value.getLength();
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return *this;
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}
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};
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}
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#endif
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