// method to add a node to the LinkedListStrings
public void addNode(NodeString newNode)
{
// put the newNode at the front if the linked list is empty
if (this.length == 0)
{
// set the head & tail to newNode
this.head = newNode;
this.tail = newNode;
// update the list's length
this.length++;
}
else if (this.length > 0)
{
// link the current tail to newNode - call setNodeAfter()
this.tail.setNodeAfter(newNode);
// link the newNode to current tail - call setNodeBefore()
newNode.setNodeBefore(this.tail);
// set the tail to newNode
this.tail = newNode;
// update the list's length
this.length++;
}
}
/*
* This method stores the operations compelted and results into temp linked list.
* This linked list is then read in later by a different method to write the lines for the text file(s).
* This is done to store all of the items into memory and once the session is exited or
* the user decides to start a new session, the application will then write all the
* necessary components to the correct files.
*
* This method is specially for conversion operations.
*/
public static void storeForLogFileConversion(LinkedListStrings LL, string originalNum, string inputBase, string outputBase, string answer)
{
// build the string from the inputs
string writeString = $"conv {inputBase} to {outputBase} {originalNum} = {answer}";
// create a new nodeToAdd
NodeString nodeToAdd = new NodeString(writeString);
// place the writeString into the passed linked list
LL.addNode(nodeToAdd);
}
/*
* This method stores the opeartions completed and results into a temp linked list.
* This linked list is then read in later by a different method to write the lines to the text file(s).
* This is done to store all of the items into memory and once the session is exited or the user
* decides to start a new session, the application will then write all the necessary compnents to the correct files.
* Great rescourse used heavily:
* https://docs.microsoft.com/en-us/dotnet/csharp/programming-guide/file-system/how-to-create-a-file-or-folder
*
* This method is specifically for binary arithmetic operations.
*/
public static void storeForLogFileArithmetic(LinkedListStrings LL, string num1, string num2, string operation, string answer)
{
// build the string from the inputs
string writeString = $"arth {num1} {operation} {num2} = {answer}";
// create a new nodeToAdd
NodeString nodeToAdd = new NodeString(writeString);
// place the writeString into the passed linked list
LL.addNode(nodeToAdd);
}
// this method returns the string contents of a node given an index
public String contentsAtIndex(int index)
{
// int value to keep track of the current location
int currLocation = 0;
// node value to denote the current node being checked
NodeString currNode = this.head;
// loop through the linked list until the proper location is found
while (currLocation < index)
{
// advance the node until location is found
currNode = currNode.getNodeAfter();
// advance currentLocation
currLocation++;
}
// return the value at that location as an int
return(currNode.getContents());
}
// method to set the nodeAfter
public void setNodeBefore(NodeString nodeBefore)
{
this.nodeBefore = nodeBefore;
}
// method to set the nodeAfter
public void setNodeAfter(NodeString nodeAfter)
{
this.nodeAfter = nodeAfter;
}
// instance method for NodeString class
public NodeString(string contents)
{
this.nodeBefore = null;
this.nodeAfter = null;
this.contents = contents;
}
// instance method for a LinkedListStrings object - starts out empty
public LinkedListStrings()
{
this.head = null;
this.tail = null;
this.length = 0;
}
/*
* This method reads in a file from the user and completes the operations requested.
* This method reads the file in question, and rewrites the file based on the operations.
* Each operation is completed and then stored into a linked list object. This is done to
* allow easier rewrite of the file when all operations are complete.
*/
public static void operateOnFile()
{
// call to choose the user file to operate on
string fileLocation = chooseFile();
// creation of LinkedListString object to keep track of line outputs (both arth and conv)
LinkedListStrings lineOutputs = new LinkedListStrings();
// reassign fileLocation for testing puproses
//string logFiles = System.IO.Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments), "IT-Calculator Logs");
//string fileLocation = System.IO.Path.Combine(logFiles, "testReadFile.txt");
// read in the file
using (System.IO.StreamReader stream = System.IO.File.OpenText(fileLocation))
{
// temp string value to hold the line contents
string line;
while ((line = stream.ReadLine()) != null)
{
// char[] to allow for easier interaction on the line input
char[] lineChars = line.ToCharArray();
// determine if arth or conv (build the first chars into a string)
string operation = "";
for (int location = 0; location < 4; location++)
{
operation += lineChars[location];
}
// conditionals for arth
if (operation == "arth")
{
// go to location 5 to begin sorting correctly
string num1 = "";
string binOperation = "";
string num2 = "";
// int value to keep track of where in the char array currently are
int currLocation = 5;
// build num1
while (lineChars[currLocation].ToString() != " ")
{
// add to num1
num1 += lineChars[currLocation].ToString();
// advance currLocation
currLocation++;
}
// advance currLocation
currLocation++;
// build binOperation
while (lineChars[currLocation].ToString() != " ")
{
// add to binOperation
binOperation += lineChars[currLocation].ToString();
// advance currLocation
currLocation++;
}
// advance currLocation
currLocation++;
// build num2
while (currLocation < lineChars.Length)
{
if (lineChars[currLocation].ToString() != " ")
{
// add to num2
num2 += lineChars[currLocation].ToString();
// advance currLocation
currLocation++;
}
else
{
currLocation = lineChars.Length;
}
}
// create binaryOperation object to operate on and recieve an output
binaryOperation arithmeticOperation = new binaryOperation(num1, num2);
// store the output in a temp string value
string answer = arithmeticOperation.operate(binOperation);
// build the string to store inside of the linked list
string stringToStore = $"{operation} {num1} {binOperation} {num2} = {answer}";
// create node to store
NodeString nodeToAdd = new NodeString(stringToStore);
// add the node to the list
lineOutputs.addNode(nodeToAdd);
}
// conditionals for conv
else if (operation == "conv")
{
// go to location 5 to begin sorting correctly
string inputBase = "";
string outputBase = "";
string numtoConvert = "";
// int value to keep track of where in the char array currently are
int currLocation = 5;
// build inputBase
while (lineChars[currLocation].ToString() != " ")
{
// add to inputBase
inputBase += lineChars[currLocation].ToString();
// advance currLocation
currLocation++;
}
// advance currLocation
currLocation += 4;
// build outputBase
while (lineChars[currLocation].ToString() != " ")
{
// add to outputBase
outputBase += lineChars[currLocation].ToString();
// advance currLocation
currLocation++;
}
// advance currLocation
currLocation++;
// build numToConvert
while (currLocation < lineChars.Length)
{
if (lineChars[currLocation].ToString() != " ")
{
// add to numToConvert
numtoConvert += lineChars[currLocation].ToString();
// advance currLocation
currLocation++;
}
else
{
currLocation = lineChars.Length;
}
}
// create conversionOperation instance
conversionOperation convertOperation = new conversionOperation(inputBase, outputBase, numtoConvert);
// opreate on that instance
string answer = convertOperation.operate();
// build the string to store inside of the linked list
string stringToStore = $"{operation} {inputBase} to {outputBase} {numtoConvert} = {answer}";
// create node to store
NodeString nodeToAdd = new NodeString(stringToStore);
// add the node to the list
lineOutputs.addNode(nodeToAdd);
}
else
{
string errorString = $"{line} = Label was incorrect on the line. Operation not complete.";
NodeString nodeToAdd = new NodeString(errorString);
// add the node to the list
lineOutputs.addNode(nodeToAdd);
}
}
// close stream once loop is completed
stream.Close();
}
// overwrite the file with the new information
using (System.IO.StreamWriter stream = new System.IO.StreamWriter(fileLocation))
{
for (int location = 0; location < lineOutputs.length; location++)
{
stream.WriteLine(lineOutputs.contentsAtIndex(location));
}
stream.Close();
}
}