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importjava.io.*;
importjava.util.ArrayList;
/**
* Various useful utility methods to shorten code by factoring it to here
* @author Stephen
*
*/
publicclassSP_Lib {
/**
* Writes a string to a file
* @param file File to write with
* @param data Data to write to the file
*/
publicstaticvoidwriteToFile(Stringfile, Stringdata)
{
try {
PrintWriterpw = newPrintWriter(newFileWriter(file));
pw.println(data);
pw.close();
} catch (IOExceptione) {
e.printStackTrace();
}
}
/**
* Reads the contents of a file
* @param file File to read from
* @return String of all data read from the file
* @throws FileNotFoundException
*/
publicstaticStringreadFromFile(Stringfile) throwsFileNotFoundException
{
BufferedReaderreader = newBufferedReader(newFileReader(file));
Stringline, returnString = newString();
try {
while((line = reader.readLine()) != null)
returnString = returnString + line;
reader.close();
} catch (IOExceptione) {
e.printStackTrace();
}
returnreturnString;
}
/**
* Logs an exception to the log
* @param t Exception to log
*/
publicstaticvoidlog(Throwablet)
{
StringWritersw = newStringWriter();
PrintWriterpw = newPrintWriter(sw);
t.printStackTrace(pw);
Stringtrace = sw.toString();
try{
FileWriterf = newFileWriter("log.txt", true);
f.append(trace);
f.close();
}
catch(java.io.FileNotFoundExceptione)
{
System.out.println("Could not create log.txt! Check file permissions.");
}
catch(java.io.IOExceptione)
{
//oh well...
}
}
/**
* Logs an exception to a file other than the log
* @param t Exception to log
* @param file File to log to
*/
publicstaticvoidlog(Throwablet, Stringfile) //logs a stack trace to a file
{
StringWritersw = newStringWriter();
PrintWriterpw = newPrintWriter(sw);
t.printStackTrace(pw);
Stringtrace = sw.toString();
try
{
FileWriterf = newFileWriter(file, true);
f.append(trace);
f.close();
}
catch(java.io.FileNotFoundExceptione)
{
System.out.println("Could not create " + file + ".txt! Check file permissions.");
}
catch(java.io.IOExceptione)
{
//oh well...
}
}
/**
* Clears a file
* @param file File to clear
*/
publicstaticvoidclearFile(Stringfile)
{
try
{
FileWriterf = newFileWriter(file, false);
f.write("");
f.close();
}
catch(java.io.IOExceptione)
{
//oh well..
}
}
/**
* Gets string input from the console
* @param message Message to give the user
* @return User input
*/
publicstaticStringinputString(Stringmessage)
{
booleancontrol = true;
InputStreamReaderreader = newInputStreamReader(System.in);
BufferedReaderinput = newBufferedReader(reader);
do{
control = false;
System.out.print(message);
try{
returninput.readLine();
}
catch(IOExceptione)
{
System.out.println("Input error! Try again.");
control = true;
}
}
while(control == true);
returnnull;
}
/**
* Gets integer input from the console
* @param message Message to give the user
* @return User input
*/
publicstaticintinputNumber(Stringmessage) //basic number input method; contains exceptions
{
booleancontrol = true;
do{
control = false;
try{
StringstringRep = inputString(message);
returnInteger.parseInt(stringRep);
}
catch(NumberFormatExceptione)
{
System.out.println("Invalid number.\n");
control = true;
SP_Lib.log(e);
}
}
while(control == true);
return0;
}
/**
* Writes 1 level XML to a file
* @param keys Keys to write
* @param values Values for the keys
* @param fileName File to write to
* @throws FileNotFoundException
*/
publicstaticvoidwriteXML(ArrayList<String> keys, ArrayList<String> values, StringfileName) throwsFileNotFoundException
{
PrintWriterwriter = newPrintWriter(fileName);
for(intx = 0; x < keys.size(); x++)
{
writer.println("<" + keys.get(x) + ">" + values.get(x) + "</" + keys.get(x) + ">");
}
writer.close();
}
}