implement methods to get dictionary and array contents as map and vector

include/qpdf/QPDFObjectHandle.hh

@@ -172,6 +172,8 @@ class QPDFObjectHandle
     int getArrayNItems();
     QPDF_DLL
     QPDFObjectHandle getArrayItem(int n);
+    QPDF_DLL
+    std::vector<QPDFObjectHandle> getArrayAsVector();
 
     // Methods for dictionary objects
     QPDF_DLL
@@ -180,6 +182,8 @@ class QPDFObjectHandle
     QPDFObjectHandle getKey(std::string const&);
     QPDF_DLL
     std::set<std::string> getKeys();
+    QPDF_DLL
+    std::map<std::string, QPDFObjectHandle> getDictAsMap();
 
     // Methods for name and array objects
     QPDF_DLL

libqpdf/QPDFObjectHandle.cc

@@ -246,6 +246,13 @@ QPDFObjectHandle::getArrayItem(int n)
     return dynamic_cast<QPDF_Array*>(obj.getPointer())->getItem(n);
 }
 
+std::vector<QPDFObjectHandle>
+QPDFObjectHandle::getArrayAsVector()
+{
+    assertType("Array", isArray());
+    return dynamic_cast<QPDF_Array*>(obj.getPointer())->getAsVector();
+}
+
 // Array mutators
 
 void
@@ -278,6 +285,13 @@ QPDFObjectHandle::getKeys()
     return dynamic_cast<QPDF_Dictionary*>(obj.getPointer())->getKeys();
 }
 
+std::map<std::string, QPDFObjectHandle>
+QPDFObjectHandle::getDictAsMap()
+{
+    assertType("Dictionary", isDictionary());
+    return dynamic_cast<QPDF_Dictionary*>(obj.getPointer())->getAsMap();
+}
+
 // Array and Name accessors
 bool
 QPDFObjectHandle::isOrHasName(std::string const& value)

libqpdf/QPDF_Array.cc

@@ -51,6 +51,12 @@ QPDF_Array::getItem(int n) const
     return this->items[n];
 }
 
+std::vector<QPDFObjectHandle> const&
+QPDF_Array::getAsVector() const
+{
+    return this->items;
+}
+
 void
 QPDF_Array::setItem(int n, QPDFObjectHandle const& oh)
 {

libqpdf/QPDF_Dictionary.cc

@@ -78,6 +78,13 @@ QPDF_Dictionary::getKeys()
     return result;
 }
 
+std::map<std::string, QPDFObjectHandle> const&
+QPDF_Dictionary::getAsMap() const
+{
+
+    return this->items;
+}
+
 void
 QPDF_Dictionary::replaceKey(std::string const& key,
 			    QPDFObjectHandle const& value)

libqpdf/qpdf/QPDF_Array.hh

@@ -14,6 +14,7 @@ class QPDF_Array: public QPDFObject
     virtual std::string unparse();
     int getNItems() const;
     QPDFObjectHandle getItem(int n) const;
+    std::vector<QPDFObjectHandle> const& getAsVector() const;
     void setItem(int, QPDFObjectHandle const&);
 
   protected:

libqpdf/qpdf/QPDF_Dictionary.hh

@@ -21,6 +21,7 @@ class QPDF_Dictionary: public QPDFObject
     bool hasKey(std::string const&);
     QPDFObjectHandle getKey(std::string const&);
     std::set<std::string> getKeys();
+    std::map<std::string, QPDFObjectHandle> const& getAsMap() const;
 
     // Replace value of key, adding it if it does not exist
     void replaceKey(std::string const& key, QPDFObjectHandle const&);

qpdf/qtest/qpdf/test14.out

@@ -3,4 +3,5 @@ old dict: 1
 old dict: 1
 new dict: 2
 swapped array: /Array
+array and dictionary contents are correct
 test 14 done

qpdf/test_driver.cc

@@ -570,6 +570,20 @@ void runtest(int n, char const* filename)
 	std::cout << "swapped array: " << qdict.getArrayItem(0).getName()
 		  << std::endl;
 
+	// Exercise getAsMap and getAsArray
+	std::vector<QPDFObjectHandle> array_elements =
+	    qdict.getArrayAsVector();
+	std::map<std::string, QPDFObjectHandle> dict_items =
+	    qarray.getDictAsMap();
+	if ((array_elements.size() == 1) &&
+	    (array_elements[0].getName() == "/Array") &&
+	    (dict_items.size() == 1) &&
+	    (dict_items["/NewDict"].getIntValue() == 2))
+	{
+	    std::cout << "array and dictionary contents are correct"
+		      << std::endl;
+	}
+
 	QPDFWriter w(pdf, "a.pdf");
 	w.setStaticID(true);
 	w.setStreamDataMode(qpdf_s_preserve);