public override string ReadLine()
{
string line = Readline.ReadLine(currentPrompt);
if (++lineCount > 0)
{
currentPrompt = emptyPrompt;
}
return(line);
}
private static void Main(string[] args)
{
while (true)
{
var line = Readline.ReadLine("REPL> ");
if (line == null)
{
break;
}
Console.WriteLine(Rep(line));
}
}
// ReSharper disable once UnusedParameter.Local
private static void Main(string[] args)
{
while (true)
{
var line = Readline.ReadLine("REPL> ");
if (line == null)
{
break;
}
try
{
Console.WriteLine(Rep(line));
}
catch (Exception e)
{
Console.WriteLine("ERROR: " + e.Message);
}
}
}
static void Main(string[] args)
{
try
{
if (args == null || args.Length <= 0)
{
ILog log = new FileLog();
log.Log("The agrument is null");
}
else
{
string fileName = string.Empty;
IGetFileName getFileName = new FileName();
fileName = getFileName.GetFileName(args[0]);
List <Name> nameList = new List <Name>();
IReadLine readline = new Readline();
nameList = readline.ReadLine(fileName);
List <Name> sortedNameList = new List <Name>();
ISortName sortName = new SortName();
sortedNameList = sortName.Sort(nameList);
IPrintName printName = new PrintName();
printName.PrintNameToScreen(sortedNameList);
IWriteNameToFile writeNameToFile = new WriteNameToFile();
writeNameToFile.WriteName(sortedNameList);
Console.ReadLine();
}
}
catch (Exception ex)
{
Console.WriteLine("The file could not be read:");
Console.WriteLine(ex.Message);
ILog log = new FileLog();
log.Log("The file could not be read:" + ex);
}
}
private static void PlayWithStrings() // examples on using strings also for the first lab on padding columns
{
string hoursString = "10";
From String -------------------------------------------------------------------------------------------------------------------------
int hours = Int32.Parse(hoursString); //takes the string and gives the int equivalent (Parse)
int hours;
bool result = Int32.TryParse(hoursString, out hours); // safer version to use. It returns if it failed. Returns a boolean value
it is required for (out) to before the word hours in C# using TryParse
bool result = Int32.TryParse(hoursString, out int hours); // int is a local declartion
To String-------------------------------------------------------------------------------------------------------------------------------
hoursString = hours.ToString(); // work on any expression
4.75.ToString(); converts double to a string
475.ToString(); converts double to a string // converts anything these to a string
Console.Readline.ToString(); converts double to a string
string message = "Hello\tworld";
string filePath = "C:\\Temp\\Test";
Verbatim strings eliminates the need for the extra Slash like the above statements when calling a file
string filePath = @ "C:\Temp\Test";
Concat adds two string together
string firstName = "Bob";
string lastName = "Smith";
string name = firstName + " " + lastName;
string can not be changed once they are set
String are immutable - this produces a new string
name = "Hello" + name;
Console.WriteLine("Hello " + name); // approach 1
Console.WriteLine("Hello {0} {1}", firstName, lastName); // apporach 2 the zero is a replacement just like an array. Called string formatting
string str = String.Format("Hello {0}", name); // apporach 3
Console.WriteLine(str);
Approach 4
Console.WriteLine($"Hello {firstName} {lastName}"); // $ is crital its an interpeted string string fullName = $"{firstName} {lastName}"
going forward use this type of string(Interpeted string) *****************************************
Null vs Empty-------------------------------------------------------------------------------
string missing = null; // c++ and c# nulls are not the same.... Null in C# means i have a value
string empty = "";
string empty2 = String.Empty; // predefinded value which its string is empty---- used for langues that dont use strings
every expression has a to string
checking for empty strings---------------------------------------------------------
if (firstName.Length == 0)
if (missing != null && firstName != "") // returns a boolean result
if (!String.IsNullOrEmpty(firstName)) // this is the perfered waay ************************************************************
Console.WriteLine(firstName);
if (firstName.Lenght == 0)
if (firstName == " ")
if (firstName == string.Empty)
Other Stuff -------------------------------------------------------------------
string upperName = firstName.ToUpper(); // changes to uppercase letters
string lowerName = firstName.ToLower(); // changes to lowercase letters
Comparison---------------------------------------------------------------------
bool areEqual = firstName == lastName;
areEqual = firstName.ToLower() == lastName.ToLower(); // not the best solution. it will not always work
areEqual = String.Compare(firstName, lastName, true) == 0; // still case sensitive -- perfered way ******************************************************************
fins a letter in a string-------------------------------------------------------------
bool startsWithA = firstName.StartsWith("A"); // they are case sensitive
bool endsWithA = firstName.EndsWith("A");
bool hasA = firstName.IndexOf("A") >= 0; // finds if there is an "A" somewhere in the string
string subset = firstName.Substring(4); // returns everthing after the 4 character
Clean up-------------------------------------------------------------------------
string cleanMe = firstName.Trim(); // removes all white space left and right of string----- also TrimStart, TrimEnd will clean just the left or right
string makeLonger = firstName.PadLeft(20); //PadRight // adds white space to align columns of text----- building table or reciptes***********************
}
public override CommandResultCode Execute(IExecutionContext context, CommandArguments args)
{
if (Application.ActiveContext != null && Application.ActiveContext.IsIsolated)
{
Error.WriteLine("a context is already opened: try to disconnect first");
Error.WriteLine();
return(CommandResultCode.ExecutionFailed);
}
if (!args.MoveNext())
{
return(CommandResultCode.SyntaxError);
}
if (args.Current != "to")
{
return(CommandResultCode.SyntaxError);
}
if (!args.MoveNext())
{
return(CommandResultCode.SyntaxError);
}
string address = args.Current;
IServiceAddress serviceAddress;
try {
serviceAddress = ServiceAddresses.ParseString(address);
} catch (Exception) {
Error.WriteLine("Invalid service address specified: {0}", address);
return(CommandResultCode.ExecutionFailed);
}
NetworkConfigSource configSource = new NetworkConfigSource();
try {
configSource.AddNetworkNode(serviceAddress);
} catch (Exception e) {
Error.WriteLine("The address '" + address + "' is invalid: " + e.Message);
return(CommandResultCode.ExecutionFailed);
}
string protocol = "tcp";
string credentials = String.Empty;
string format = "binary";
if (args.MoveNext())
{
if (args.Current == "identified")
{
if (!args.MoveNext())
{
return(CommandResultCode.SyntaxError);
}
if (args.Current != "by")
{
return(CommandResultCode.SyntaxError);
}
if (!args.MoveNext())
{
return(CommandResultCode.SyntaxError);
}
credentials = args.Current;
if (args.MoveNext())
{
if (args.Current != "on")
{
return(CommandResultCode.SyntaxError);
}
protocol = args.Current;
if (args.MoveNext())
{
if (args.Current != "with")
{
return(CommandResultCode.SyntaxError);
}
format = args.Current;
}
}
}
else if (args.Current == "on")
{
if (!args.MoveNext())
{
return(CommandResultCode.SyntaxError);
}
protocol = args.Current;
if (args.MoveNext())
{
if (args.Current != "with")
{
return(CommandResultCode.SyntaxError);
}
format = args.Current;
}
}
else if (args.Current == "with")
{
if (!args.MoveNext())
{
return(CommandResultCode.SyntaxError);
}
format = args.Current;
}
else
{
return(CommandResultCode.SyntaxError);
}
}
IServiceConnector connector;
if (protocol == "tcp")
{
if (String.IsNullOrEmpty(credentials))
{
while (String.IsNullOrEmpty(credentials = Readline.ReadPassword("password: "******"please provide a valid password...");
}
Out.WriteLine();
}
connector = new TcpServiceConnector(credentials);
}
else if (protocol == "http")
{
string userName = credentials;
string password = null;
int index = credentials.IndexOf(':');
if (index != -1)
{
password = credentials.Substring(index + 1);
userName = credentials.Substring(0, index);
}
if (String.IsNullOrEmpty(password))
{
while (String.IsNullOrEmpty(password = Readline.ReadPassword("password: "******"please provide a valid password...");
}
Out.WriteLine();
}
// TODO: connector = new HttpServiceConnector(userName, password);
Out.WriteLine("Not supported yet.");
return(CommandResultCode.ExecutionFailed);
}
else
{
return(CommandResultCode.SyntaxError);
}
IMessageSerializer serializer;
if (format == "binary")
{
serializer = new BinaryRpcMessageSerializer();
}
else if (format == "xml")
{
//TODO: serializer = new XmlRpcMessageSerializer();
return(CommandResultCode.ExecutionFailed);
}
else if (format == "json")
{
if (JsonRpcMessageSerializer == null)
{
Error.WriteLine("JSON serializer was not installed.");
Error.WriteLine();
return(CommandResultCode.ExecutionFailed);
}
serializer = JsonRpcMessageSerializer;
}
else
{
return(CommandResultCode.SyntaxError);
}
connector.MessageSerializer = serializer;
NetworkProfile networkProfile = new NetworkProfile(connector);
networkProfile.Configuration = configSource;
//TODO: test the connection is correct ...
((CloudAdmin)Application).SetNetworkContext(new NetworkContext(networkProfile));
Out.WriteLine("connected successfully to {0}", address);
Out.WriteLine();
return(CommandResultCode.Success);
}
