Improvements to JSON library

lib/json.cpp

@@ -77,6 +77,20 @@ unsigned int JSON::Iter::num() const{
   return i;
 }
 
+/// Delete the current indice from the parent JSON::Value.
+void JSON::Iter::remove(){
+  if (*this){
+    if (myType == JSON::ARRAY){
+      r->removeMember(aIt);
+      return;
+    }
+    if (myType == JSON::OBJECT){
+      r->removeMember(oIt);
+      return;
+    }
+  }
+}
+
 /// Construct from a root Value to iterate over.
 JSON::ConstIter::ConstIter(const Value & root){
   myType = root.myType;
@@ -565,6 +579,40 @@ bool JSON::Value::operator!=(const JSON::Value & rhs) const {
   return !((*this) == rhs);
 }
 
+bool JSON::Value::compareExcept(const Value & rhs, const std::set<std::string> & skip) const {
+  if (myType != OBJECT) {
+    return ((*this) == rhs);
+  }
+  jsonForEachConst(*this, it){
+    if (skip.count(it.key())){continue;}
+    if (!rhs.isMember(it.key()) || !(*it).compareExcept(rhs[it.key()], skip)) {
+      return false;
+    }
+  }
+  jsonForEachConst(rhs, it){
+    if (skip.count(it.key())){continue;}
+    if (!(*this).isMember(it.key())){return false;}
+  }
+  return true;
+}
+
+bool JSON::Value::compareOnly(const Value & rhs, const std::set<std::string> & check) const {
+  if (myType != OBJECT) {
+    return ((*this) == rhs);
+  }
+  jsonForEachConst(*this, it){
+    if (!check.count(it.key())){continue;}
+    if (!rhs.isMember(it.key()) || !(*it).compareOnly(rhs[it.key()], check)) {
+      return false;
+    }
+  }
+  jsonForEachConst(rhs, it){
+    if (!check.count(it.key())){continue;}
+    if (!(*this).isMember(it.key())){return false;}
+  }
+  return true;
+}
+
 /// Completely clears the contents of this value,
 /// changing its type to NULL in the process.
 void JSON::Value::null() {
@@ -574,6 +622,35 @@ void JSON::Value::null() {
   myType = EMPTY;
 }
 
+/// Assigns this JSON::Value to the given JSON::Value, skipping given member recursively.
+JSON::Value & JSON::Value::assignFrom(const Value & rhs, const std::set<std::string> & skip){
+  null();
+  myType = rhs.myType;
+  if (myType == STRING){
+    strVal = rhs.strVal;
+  }
+  if (myType == BOOL || myType == INTEGER){
+    intVal = rhs.intVal;
+  }
+  if (myType == OBJECT){
+    jsonForEachConst(rhs, i){
+      if (!skip.count(i.key())){
+        JSON::Value tmp;
+        tmp.assignFrom(*i, skip);
+        (*this)[i.key()] = tmp;
+      }
+    }
+  }
+  if (myType == ARRAY){
+    jsonForEachConst(rhs, i){
+      JSON::Value tmp;
+      tmp.assignFrom(*i, skip);
+      append(tmp);
+    }
+  }
+  return *this;
+}
+
 /// Sets this JSON::Value to be equal to the given JSON::Value.
 JSON::Value & JSON::Value::operator=(const JSON::Value & rhs) {
   null();
@@ -1207,6 +1284,16 @@ void JSON::Value::removeMember(const std::string & name) {
   }
 }
 
+void JSON::Value::removeMember(const std::deque<Value*>::iterator & it){
+  delete (*it);
+  arrVal.erase(it);
+}
+
+void JSON::Value::removeMember(const std::map<std::string, Value*>::iterator & it){
+  delete it->second;
+  objVal.erase(it);
+}
+
 /// For object JSON::Value objects, returns true if the
 /// given name is a member. Returns false otherwise.
 bool JSON::Value::isMember(const std::string & name) const {

lib/json.h

@@ -6,6 +6,7 @@
 #include <map>
 #include <istream>
 #include <vector>
+#include <set>
 #include "socket.h"
 
 /// JSON-related classes and functions
@@ -42,7 +43,10 @@ namespace JSON {
       //comparison operators
       bool operator==(const Value & rhs) const;
       bool operator!=(const Value & rhs) const;
+      bool compareExcept(const Value & rhs, const std::set<std::string> & skip) const;
+      bool compareOnly(const Value & rhs, const std::set<std::string> & check) const;
       //assignment operators
+      Value & assignFrom(const Value & rhs, const std::set<std::string> & skip);
       Value & operator=(const Value & rhs);
       Value & operator=(const std::string & rhs);
       Value & operator=(const char * rhs);
@@ -78,6 +82,8 @@ namespace JSON {
       void prepend(const Value & rhs);
       void shrink(unsigned int size);
       void removeMember(const std::string & name);
+      void removeMember(const std::deque<Value*>::iterator & it);
+      void removeMember(const std::map<std::string, Value*>::iterator & it);
       bool isMember(const std::string & name) const;
       bool isInt() const;
       bool isString() const;
@@ -110,6 +116,7 @@ namespace JSON {
       Iter & operator++();///<Go to next iteration.
       const std::string & key() const;///<Return the name of the current indice.
       unsigned int num() const;///<Return the number of the current indice.
+      void remove();///<Delete the current indice from the parent JSON::Value.
     private:
       ValueType myType;
       Value * r;