Able to parse simple values

Hazelnupp/FloatValue.cpp

@@ -1,4 +1,5 @@
 #include "FloatValue.h"
+#include <sstream>
 
 FloatValue::FloatValue(const long double& value)
 	:
@@ -7,3 +8,15 @@ FloatValue::FloatValue(const long double& value)
 {
 	return;
 }
+
+Value* FloatValue::Deepcopy() const
+{
+	return new FloatValue(value);
+}
+
+std::string FloatValue::GetAsOsString() const
+{
+	std::stringstream ss;
+	ss << "FloatValue: " << value;
+	return ss.str();
+}

Hazelnupp/FloatValue.h

@@ -1,11 +1,21 @@
 #pragma once
 #include "Value.h"
+#include <ostream>
 
 class FloatValue : public Value
 {
 public:
 	FloatValue(const long double& value);
 
+	Value* Deepcopy() const override;
+
+	friend std::ostream& operator<< (std::ostream& os, const FloatValue& v)
+	{
+		return os << v.GetAsOsString();
+	}
+
+	std::string GetAsOsString() const override;
+
 private:
 	long double value;
 };

Hazelnupp/Hazelnupp.cpp

@@ -1,17 +1,141 @@
 #include "Hazelnupp.h"
+#include "VoidValue.h"
+#include "IntValue.h"
+#include "FloatValue.h"
+#include "StringValue.h"
+#include "ListValue.h"
+#include "StringTools.h"
+#include <iostream>
 
 Hazelnupp::Hazelnupp()
 {
 	return;
 }
 
-Hazelnupp::Hazelnupp(int argc, const char* const* argv)
+Hazelnupp::Hazelnupp(const int argc, const char* const* argv)
 {
 	Parse(argc, argv);
 	return;
 }
 
-void Hazelnupp::Parse(int argc, const char* const* argv)
+void Hazelnupp::Parse(const int argc, const char* const* argv)
 {
+	// Populate raw arguments
+	PopulateRawArgs(argc, argv);
+
+
+	executableName = std::string(rawArgs[0]);
+
+	std::size_t i = 1;
+	while (i < rawArgs.size())
+	{
+		if ((rawArgs[i].length() > 2) && (rawArgs[i].substr(0, 2) == "--"))
+		{
+			Parameter* param = nullptr;
+			i = ParseNextParameter(i, param);
+			
+			parameters.insert(std::pair<std::string, Parameter*>(param->Key(), param));
+		}
+		else
+			i++;
+	}
+
+	std::cout << "Terminated." << std::endl;
+
 	return;
 }
+
+std::size_t Hazelnupp::ParseNextParameter(const std::size_t parIndex, Parameter*& out_Par)
+{
+	std::size_t i = parIndex;
+	const std::string key = rawArgs[parIndex];
+	std::vector<std::string> values;
+
+	// Get values
+	for (i++; i < rawArgs.size(); i++)
+		// If not another parameter
+		if ((rawArgs[i].length() < 2) || (rawArgs[i].substr(0, 2) != "--"))
+			values.emplace_back(rawArgs[i]);
+		else
+		{
+			break;
+		}
+
+	Value* parsedVal = EvaluateValues(values);
+	out_Par = new Parameter(key, parsedVal);
+
+	delete parsedVal;
+	parsedVal = nullptr;
+
+	return i;
+}
+
+void Hazelnupp::PopulateRawArgs(const int argc, const char* const* argv)
+{
+	rawArgs.reserve(argc);
+	for (int i = 0; i < argc; i++)
+		rawArgs.emplace_back(std::string(argv[i]));
+
+	return;
+}
+
+bool Hazelnupp::HasParam(const std::string& key) const
+{
+	return parameters.find(key) != parameters.end();
+}
+
+Value* Hazelnupp::EvaluateValues(const std::vector<std::string>& values)
+{
+	// Void-type
+	if (values.size() == 0)
+	{
+		return new VoidValue;
+	}
+
+	// List-type
+	else if (values.size() > 1)
+	{
+		ListValue* newList = new ListValue();
+		for (const std::string& val : values)
+		{
+			Value* tmp = EvaluateValues(std::vector<std::string>({ val }));
+			newList->AddValue(tmp);
+			delete tmp;
+		}
+		return newList;
+	}
+
+	// Now we're only dealing with a single value
+	const std::string& val = values[0];
+	
+	// String
+	if (!StringTools::IsNumeric(val, true))
+		return new StringValue(val);
+
+	// Numeric
+	bool isInt;
+	long double num;
+	
+	if (StringTools::ParseNumber(val, isInt, num))
+	{
+		// Integer
+		if (isInt)
+			return new IntValue((long long int)num);
+
+		// Double
+		return new FloatValue(num);
+	}
+
+	// Failed
+	return nullptr;
+}
+
+const std::string& Hazelnupp::GetExecutableName() const
+{
+	return executableName;
+}
+
+const Value* Hazelnupp::operator[](const std::string& key)
+{
+	return parameters[key]->Value();
+}

Hazelnupp/Hazelnupp.h

@@ -1,15 +1,40 @@
 #pragma once
 #include "Parameter.h"
 #include <unordered_map>
+#include <vector>
 
 class Hazelnupp
 {
 public:
 	Hazelnupp();
-	Hazelnupp(int argc, const char* const* argv);
+	Hazelnupp(const int argc, const char* const* argv);
 
 	//! Will parse command line arguments
-	void Parse(int argc, const char* const* argv);
+	void Parse(const int argc, const char* const* argv);
 
+	//! Will return argv[0], the name of the executable.
+	const std::string& GetExecutableName() const;
+
+	//! Will return the value given a key
+	const Value* operator[](const std::string& key);
+
+	//! Will check wether a parameter exists given a key, or not
+	bool HasParam(const std::string& key) const;
+
+private:
+	//! Will translate the c-like args to an std::vector
+	void PopulateRawArgs(const int argc, const char* const* argv);
+
+	//! Will parse the next parameter. Returns the index of the next parameter.
+	std::size_t ParseNextParameter(const std::size_t parIndex, Parameter*& out_Par);
+
+	Value* EvaluateValues(const std::vector<std::string>& values);
+
+	std::string executableName; //! The path of the executable. Always argv[0]
 	std::unordered_map<std::string, Parameter*> parameters;
+
+	std::vector<std::string> rawArgs;
+
+	// EvaluateValues
+	friend class ListValue;
 };

Hazelnupp/Hazelnupp.vcxproj

@@ -145,6 +145,7 @@
     <ClCompile Include="ListValue.cpp" />
     <ClCompile Include="main.cpp" />
     <ClCompile Include="Parameter.cpp" />
+    <ClCompile Include="StringTools.cpp" />
     <ClCompile Include="StringValue.cpp" />
     <ClCompile Include="Value.cpp" />
     <ClCompile Include="VoidValue.cpp" />
@@ -156,6 +157,7 @@
     <ClInclude Include="ListValue.h" />
     <ClInclude Include="Parameter.h" />
     <ClInclude Include="DataType.h" />
+    <ClInclude Include="StringTools.h" />
     <ClInclude Include="StringValue.h" />
     <ClInclude Include="Value.h" />
     <ClInclude Include="VoidValue.h" />

Hazelnupp/Hazelnupp.vcxproj.filters

@@ -42,6 +42,9 @@
     <ClCompile Include="ListValue.cpp">
       <Filter>Quelldateien</Filter>
     </ClCompile>
+    <ClCompile Include="StringTools.cpp">
+      <Filter>Quelldateien</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="Hazelnupp.h">
@@ -71,5 +74,8 @@
     <ClInclude Include="FloatValue.h">
       <Filter>Headerdateien</Filter>
     </ClInclude>
+    <ClInclude Include="StringTools.h">
+      <Filter>Headerdateien</Filter>
+    </ClInclude>
   </ItemGroup>
 </Project>

Hazelnupp/IntValue.cpp

@@ -1,4 +1,5 @@
 #include "IntValue.h"
+#include <sstream>
 
 IntValue::IntValue(const long long int& value)
 	:
@@ -7,3 +8,15 @@ IntValue::IntValue(const long long int& value)
 {
 	return;
 }
+
+Value* IntValue::Deepcopy() const
+{
+	return new IntValue(value);
+}
+
+std::string IntValue::GetAsOsString() const
+{
+	std::stringstream ss;
+	ss << "IntValue: " << value;
+	return ss.str();
+}

Hazelnupp/IntValue.h

@@ -6,6 +6,10 @@ class IntValue : public Value
 public:
 	IntValue(const long long int& value);
 
+	Value* Deepcopy() const override;
+
+	std::string GetAsOsString() const override;
+
 private:
 	long long int value;
 };

Hazelnupp/ListValue.cpp

@@ -1,4 +1,12 @@
 #include "ListValue.h"
+#include "Hazelnupp.h"
+#include <sstream>
+
+ListValue::ListValue() :
+	Value(DATA_TYPE::LIST)
+{
+	return;
+}
 
 ListValue::~ListValue()
 {
@@ -10,8 +18,36 @@ ListValue::~ListValue()
 	return;
 }
 
+Value* ListValue::Deepcopy() const
+{
+	ListValue* newList = new ListValue();
+
+	for (const Value* val : value)
+		newList->AddValue(val);
+
+	return newList;
+}
+
 void ListValue::AddValue(const Value* value)
 {
-	this->value.emplace_back(new Value(*value));
+	this->value.emplace_back(value->Deepcopy());
 	return;
 }
+
+std::string ListValue::GetAsOsString() const
+{
+	std::stringstream ss;
+
+	ss << "ListValue: [";
+
+	for (const Value* val : value)
+	{
+		ss << *val;
+		if (val != value.back())
+			ss << ", ";
+	}
+
+	ss << "]";
+
+	return ss.str();
+}

Hazelnupp/ListValue.h

@@ -5,11 +5,21 @@
 class ListValue : public Value
 {
 public:
+	ListValue();
 	~ListValue();
 
+	Value* Deepcopy() const override;
+
 	//! Will add this value to the list
 	void AddValue(const Value* value);
 
+	std::string GetAsOsString() const override;
+
+	friend std::ostream& operator<< (std::ostream& os, const ListValue& v)
+	{
+		return os << v.GetAsOsString();
+	}
+
 private:
 	std::vector<Value*> value;
 };

Hazelnupp/Parameter.cpp

@@ -1,9 +1,19 @@
 #include "Parameter.h"
 
-Parameter::Parameter(const std::string& key, const Value& value)
+Parameter::Parameter(const std::string& key, const ::Value* value)
 	:
-	key { key },
-	value { value }
+	key{ key }
 {
+	this->value = value->Deepcopy();
 	return;
 }
+
+const std::string& Parameter::Key() const
+{
+	return key;
+}
+
+const ::Value* Parameter::Value() const
+{
+	return value;
+}

Hazelnupp/Parameter.h

@@ -1,13 +1,22 @@
 #pragma once
 #include "Value.h"
 #include <string>
+#include <ostream>
 
 class Parameter
 {
 public:
-	explicit Parameter(const std::string& key, const Value& value);
+	explicit Parameter(const std::string& key, const Value* value);
 	
+	const std::string& Key() const;
+	const Value* Value() const;
+
+	friend std::ostream& operator<< (std::ostream& os, const Parameter& p)
+	{
+		return os << "{ Key: \"" << p.key << "\" -> " << *p.value << " }";
+	}
+
 private:
 	std::string key;
-	Value value;
+	::Value* value;
 };

Hazelnupp/StringTools.cpp

@@ -0,0 +1,188 @@
+#include "StringTools.h"
+
+bool StringTools::Contains(const std::string& str, const char c)
+{
+    for (const char& i : str)
+        if (i == c)
+            return true;
+
+    return false;
+}
+
+std::string StringTools::Replace(const std::string str, const char find, const std::string subst)
+{
+    std::stringstream ss;
+
+    for (std::size_t i = 0; i < str.length(); i++)
+    {
+        if (str[i] != find) ss << str[i];
+        else ss << subst;
+    }
+
+    return ss.str();
+}
+
+std::string StringTools::Replace(const std::string str, const std::string find, const std::string subst)
+{
+    if (find.length() == 0) return str;
+
+    std::stringstream ss;
+
+    std::size_t posFound = 0;
+    std::size_t lastFound = 0;
+
+    while (posFound != std::string::npos)
+    {
+        lastFound = posFound;
+        posFound = str.find(find, posFound);
+
+        if (posFound != std::string::npos)
+        {
+            ss << str.substr(lastFound, posFound - lastFound) << subst;
+            posFound += find.length();
+        }
+        else
+        {
+            ss << str.substr(lastFound, (str.length()) - lastFound);
+        }
+    }
+
+    return ss.str();
+}
+
+
+bool StringTools::IsNumeric(const std::string str, const bool allowDecimalPoint)
+{
+    if (str.length() == 0) return false;
+
+    bool alreadyParsedDecimalPoint = false;
+    std::size_t digitCount = 0;
+
+    for (std::size_t i = 0; i < str.length(); i++)
+    {
+        if (!(
+            ((str[i] >= '0') && (str[i] <= '9')) ||
+            ((str[i] == '-') && (i == 0)) ||
+            ((str[i] == '.') && (allowDecimalPoint) && (!alreadyParsedDecimalPoint) && (digitCount > 0))
+            )) return false;
+
+
+        // Here we just have to check for the character. Not for any other conditions.
+        // Why? Because if these conditions failed, the function would have already returned false.
+        if (((str[i] >= '0') && (str[i] <= '9'))) digitCount++;
+        if (str[i] == '.') alreadyParsedDecimalPoint = true;
+    }
+
+    // Even if we did not find any invalid chars, we should still return false, if we found no digits at all.
+    return digitCount > 0;
+}
+
+bool StringTools::ParseNumber(const std::string str, bool& out_isInt, long double& out_number)
+{
+    bool isNormalNum = true;
+
+    bool isNegative = false;
+    bool isDecimal = false;
+
+    if (str.length() == 0) return false;
+    if (str[0] == '-') isNegative = true;
+    if (Contains(str, '.')) isDecimal = true;
+
+    if (isDecimal)
+    {
+        try
+        {
+            out_number = std::stold(str);
+            out_isInt = false;
+        }
+        catch (std::invalid_argument)
+        {
+            return false;
+        }
+        catch (std::out_of_range)
+        {
+            return false;
+        }
+    }
+    else
+    {
+        try
+        {
+            out_number = (long double)std::stoll(str);
+            out_isInt = true;
+        }
+        catch (std::invalid_argument)
+        {
+            return false;
+        }
+        catch (std::out_of_range)
+        {
+            return false;
+        }
+    }
+
+    return true;
+}
+
+std::vector<std::string> StringTools::SplitString(const std::string str, const char delimiter)
+{
+    if (str.length() == 0) return std::vector<std::string>();
+
+    return SplitString(str, delimiter);
+}
+
+std::vector<std::string> StringTools::SplitString(const std::string str, const std::string delimiter)
+{
+    if (str.length() == 0) return std::vector<std::string>();
+
+    std::vector<std::string> parts;
+
+    if (delimiter.length() == 0) // If the delimiter is "" (empty), just split between every single char. Not useful, but logical
+    {
+        for (std::size_t i = 0; i < str.length(); i++)
+        {
+            parts.push_back(std::string({ str[i] }));
+        }
+        return parts;
+    }
+
+    std::size_t posFound = 0;
+    std::size_t lastFound = 0;
+
+    while (posFound != std::string::npos)
+    {
+        lastFound = posFound;
+        posFound = str.find(delimiter, posFound);
+
+        std::string found;
+
+        if (posFound != std::string::npos)
+        {
+            found = str.substr(lastFound, posFound - lastFound);
+            posFound += delimiter.length();
+        }
+        else
+        {
+            found = str.substr(lastFound, str.length() - lastFound);
+        }
+
+        parts.push_back(found);
+    }
+
+    return parts;
+}
+
+std::string StringTools::ToLower(const std::string str)
+{
+    std::stringstream ss;
+    for (std::size_t i = 0; i < str.length(); i++)
+    {
+        if ((str[i] >= 'A') && (str[i] <= 'Z')) ss << (char)(((int)str[i]) + 32);
+        else if (str[i] == -60) ss << (char)-28; // AE => ae
+        else if (str[i] == -42) ss << (char)-10; // OE => oe
+        else if (str[i] == -36) ss << (char)-4;  // UE => ue
+        else ss << str[i];
+    }
+
+    return ss.str();
+}

Hazelnupp/StringTools.h

@@ -0,0 +1,38 @@
+#pragma once
+#include <string>
+#include <sstream>
+#include <vector>
+#include <cmath>
+
+/// <summary>
+/// Internal helper class. Feel free to use it tho, lol
+/// </summary>
+class StringTools
+{
+public:
+	//! Will return wether or not a given char is in a string
+	static bool Contains(const std::string& str, const char c);
+
+	//! Will replace a part of a string with another string
+	static std::string Replace(const std::string str, const char find, const std::string subst);
+
+	//! Will replace a part of a string with another string
+	static std::string Replace(const std::string str, const std::string find, const std::string subst);
+
+	//! Will return true if the given string consists only of digits (including signage)
+	static bool IsNumeric(const std::string str, const bool allowDecimalPoint = false);
+
+	//! Will convert the number in str to a number.  
+	//! Returns wether or not the operation was successful.  
+	//! Also returns wether the number is an integer, or floating point. If int, cast out_number to int.
+	static bool ParseNumber(const std::string str, bool& out_isInt, long double& out_number);
+
+	//! Will split a string by a delimiter char. The delimiter will be excluded!
+	static std::vector<std::string> SplitString(const std::string str, const char delimiter);
+
+	//! Will split a string by a delimiter string. The delimiter will be excluded!
+	static std::vector<std::string> SplitString(const std::string str, const std::string delimiter);
+
+	//! Will make a string all lower-case
+	static std::string ToLower(const std::string str);
+};

Hazelnupp/StringValue.cpp

@@ -1,4 +1,5 @@
 #include "StringValue.h"
+#include <sstream>
 
 StringValue::StringValue(const std::string& value)
 	:
@@ -7,3 +8,15 @@ StringValue::StringValue(const std::string& value)
 {
 	return;
 }
+
+Value* StringValue::Deepcopy() const
+{
+	return new StringValue(value);
+}
+
+std::string StringValue::GetAsOsString() const
+{
+	std::stringstream ss;
+	ss << "StringValue: " << value;
+	return ss.str();
+}

Hazelnupp/StringValue.h

@@ -7,6 +7,15 @@ class StringValue : public Value
 public:
 	StringValue(const std::string& value);
 
+	Value* Deepcopy() const override;
+
+	friend std::ostream& operator<< (std::ostream& os, const StringValue& v)
+	{
+		return os << v.GetAsOsString();
+	}
+
+	std::string GetAsOsString() const override;
+
 private:
 	std::string value;
 };

Hazelnupp/Value.h

@@ -1,8 +1,21 @@
 #pragma once
 #include "DataType.h"
+#include <ostream>
 
 class Value
 {
+public:
+	//! Will return a deeopopy of this object
+	virtual Value* Deepcopy() const = 0;
+
+	friend std::ostream& operator<< (std::ostream& os, const Value& v)
+	{
+		return os << v.GetAsOsString();
+	}
+
+	//! Will return a string suitable for an std::ostream;
+	virtual std::string GetAsOsString() const = 0;
+
 protected:
 	Value(DATA_TYPE type);
 

Hazelnupp/VoidValue.cpp

@@ -6,3 +6,13 @@ VoidValue::VoidValue()
 {
 	return;
 }
+
+Value* VoidValue::Deepcopy() const
+{
+	return new VoidValue();
+}
+
+std::string VoidValue::GetAsOsString() const
+{
+	return "VoidValue";
+}

Hazelnupp/VoidValue.h

@@ -5,4 +5,13 @@ class VoidValue : public Value
 {
 public:
 	VoidValue();
+
+	Value* Deepcopy() const override;
+
+	friend std::ostream& operator<< (std::ostream& os, const VoidValue& v)
+	{
+		return os << "VoidValue";
+	}
+
+	std::string GetAsOsString() const override;
 };

Hazelnupp/main.cpp

@@ -1,6 +1,27 @@
 #include <iostream>
+#include <array>
+#include "Hazelnupp.h"
 
-int main()
+int main(int argc, char** argv)
 {
-    std::cout << "Hello World!\n";
+	std::string arg0 = "meinpfad";
+	std::string arg1 = "--word";
+	std::string arg2 = "1";
+	std::string arg3 = "--alfred";
+	std::string arg4 = "banane7";
+
+	std::array<const char*, 5> testArgv = {
+		arg0.data(),
+		arg1.data(),
+		arg2.data(),
+		arg3.data(),
+		arg4.data()
+	};
+
+	Hazelnupp args(testArgv.size(), testArgv.data());
+	//Hazelnupp args(argc, argv);
+
+	//std::cout << args.GetExecutableName() << std::endl;
+
+	return 0;
 }