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JString now streams properly.

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This commit is contained in:
barant 2024-12-11 09:55:40 -08:00
parent 0baa44d076
commit 7531c885a7
5 changed files with 57 additions and 122 deletions
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26
JString.cpp
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@ -3,10 +3,15 @@
namespace coreutils {
std::ostream &operator<<(std::ostream &os, const JString::Proxy &proxy) {
ZString tempkey = proxy.key;
ZString temp = proxy.jstring.find(tempkey);
os << temp;
return os;
}
JString::JString() : MString("{}") {}
// JString::JString(const char *data) : MString(data) {}
void JString::set(ZString &path, ZString &value) {
reset();
if(locate(path)) {
@ -46,12 +51,14 @@ namespace coreutils {
reset();
if(locate(path)) {
if(ifNext("\""))
return getTokenExclude("\"");
return getTokenExclude("\"");
// TODO: Handle numbers that are not in double quotes.
if(startsWith("[")) {
std::cout << getContainer() << std::endl;
}
else if(startsWith("["))
return getContainer();
else if(startsWith("{"))
return getContainer();
}
return ZString();
}
@ -71,11 +78,10 @@ namespace coreutils {
throw coreutils::Exception("Labels must be contained in double quotes.");
if(ifNext(":")) {
if(label == path[0]) {
if(path.getList().size() == 1)
{
if(path.getList().size() == 1) {
// std::cout << "found cursor: " << unparsed() << std::endl;
return true;
}
return true;
}
return locate(path[1]);
}
// std::cout << "+++" << unparsed() << std::endl;

53
JString.h
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@ -33,8 +33,7 @@ namespace coreutils {
public:
JString();
// JString(const char *data);
void set(ZString &path, ZString &value);
///
@ -45,28 +44,46 @@ namespace coreutils {
ZString find(ZString &path);
private:
bool locate(ZString &path);
bool notfirst;
ZString path;
ZString keyx;
public:
operator ZString () {
std::cout << "operator0" << std::endl;
return find(keyx);
}
JString &operator[](coreutils::ZString key) {
std::cout << "operator[" << key << "]" << std::endl;
keyx = key;
return *this;
class Proxy {
public:
Proxy(JString &jstring, ZString key) : jstring(jstring), key(key) {}
friend std::ostream &operator<<(std::ostream &os, const Proxy &proxy);
operator coreutils::ZString () {
// std::cout << "operator to ZString: " << key << std::endl;
return jstring.find(key);
}
operator coreutils::MString () {
// std::cout << "operator to MString: " << key << std::endl;
return jstring.find(key);
}
Proxy& operator=(coreutils::ZString value) {
// std::cout << "proxy operator=" << value << std::endl;
jstring.set(key, value);
return *this;
}
private:
JString &jstring;
ZString key;
};
Proxy operator[](coreutils::ZString key) {
// std::cout << "operator[" << key << "]" << std::endl;
return Proxy(*this, key);
}
JString & operator=(coreutils:: ZString value) {
std::cout << "should set key [" << keyx << "] operator=" << value << std::endl;
set(keyx, value);
std::cout << "operator=" << value << std::endl;
return *this;
}

90
JString.h.old
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@ -1,90 +0,0 @@
#ifndef __JString_h__
#define __JString_h__
#include "MString.h"
#include <iostream>
#include <sstream>
namespace coreutils {
///
/// Use the JString object when you need a JSON interface to C++. JString uses
/// an MString to store a JSON string representing the object(s) contained.
/// The [] operator is overriden from the ZString and provides a method to
/// access the objects elements using a named path as the index to the items.
///
/// JString default constructor will create an empty JString object pointing
/// to an empty string.
///
/// Use a constructor or assignment operator to initialize a JString to an
/// initial JSON string.
///
/// Several constructors are available including a handle to a std::FILE
/// object to initialize the JSON string. On destruction the file is saved back.
///
/// The [] operator can be used to access elements within the JSON string.
/// Use:
/// jstring["key"] = "value";
/// std::cout << jstring["key"];
///
class JString : public MString {
public:
JString();
JString(const char *data);
void set(ZString &path, ZString &value);
///
/// Use the find method to look through an object for member specified by
/// the key in parameter 1. The cursor must be pointing to the { character
/// that begins the object's list.
///
ZString find(ZString &path);
private:
bool locate(ZString &path);
bool notfirst;
ZString path;
class Proxy {
public:
Proxy(JString &jstring, ZString key) : jstring(jstring), key(key) {}
operator coreutils::ZString () {
std::cout << "operator " << key << std::endl;
return jstring.find(key);
}
Proxy& operator=(coreutils::ZString value) {
std::cout << "proxy operator=" << value << std::endl;
jstring.set(key, value);
return *this;
}
private:
JString &jstring;
ZString key;
};
public:
Proxy operator[](coreutils::ZString key) {
std::cout << "operator[" << key << "]" << std::endl;
return Proxy(*this, key);
}
JString & operator=(coreutils:: ZString value) {
std::cout << "operator=" << value << std::endl;
return *this;
}
};
}
#endif

BIN
testing/jstring_test
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10
testing/jstring_test.cpp
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@ -5,8 +5,9 @@ int main(int argc, char **argv) {
coreutils::MString test0("{\"Number:\"0\",\"id\":\"XXXXX\"}");
coreutils::JString test1;
coreutils::MString test2;
test1 = test0;
test1["name"] = "Cohen";
test1["health"] = "100";
test1["comment"] = "this is a comment";
@ -15,17 +16,18 @@ int main(int argc, char **argv) {
test1["tester"] = "test field";
test1["object1"] = "{\"attr1\":\"value1\",\"attr2\":\"value2\",\"attr3\":\"value3\"}";
std::cout << test1 << std::endl;
coreutils::MString test2 = test1["name"];
std::cout << test2 << std::endl;
std::cout << test1["id"] << std::endl;
std::cout << test1["name"] << std::endl;
std::cout << test1["health"] << std::endl;
std::cout << test1["comment"] << std::endl;
std::cout << test1["race"] << std::endl;
std::cout << test1["array"] << std::endl;
std::cout << test1["tester"] << std::endl;
std::cout << test1["object"] << std::endl;
std::cout << test1["object1"] << std::endl;
std::cout << test1["object1.attr2"] << std::endl;
return 0;