jcuda.utils.CommandLine Maven / Gradle / Ivy
/*
* JCudaUtils - Utilities for JCuda
* http://www.jcuda.org
*
* Copyright (c) 2010 Marco Hutter - http://www.jcuda.org
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
package jcuda.utils;
import java.util.*;
/**
* Command line argument utility functions, similar to the CUTIL
* functions.
*
* All command line arguments begin with '--' followed by the token.
* The token and value are separated by '='.
* Example:
* --samples=50
*
* Arrays have the form
* --model=[one.obj,two.obj,three.obj]
* (without whitespaces)
*/
public class CommandLine
{
/**
* Private constructor to prevent instantiation
*/
private CommandLine()
{
}
/**
* Returns whether the given command line arguments contain an
* argument with the given name (the name must be given without
* the "--" prefix);
*
* @param argv The arguments
* @param flagName The argument to look for
* @return Whether the argument is found
*/
public static boolean checkCommandLineFlag(String argv[], String flagName)
{
for (int i=0; i createArgMap(String argv[])
{
Map argMap = new HashMap();
String allArgs = "";
for (String a : argv)
{
allArgs += a;
}
Scanner scanner = new Scanner(allArgs);
scanner.useDelimiter("[ =]");
String key = null;
while (scanner.hasNext())
{
String token = scanner.next();
if (token.isEmpty() || token.equals(" "))
{
continue;
}
//System.out.println("Handle token '"+token+"'");
if (key == null)
{
if (!token.startsWith("-"))
{
throw new IllegalArgumentException("Illegal argument: "+token);
}
token = token.substring(1);
if (token.startsWith("-"))
{
token = token.substring(1);
}
key = token;
}
else
{
if (token.startsWith("-"))
{
argMap.put(key, null);
key = null;
token = token.substring(1);
if (token.startsWith("-"))
{
token = token.substring(1);
}
key = token;
}
else
{
argMap.put(key, token);
}
}
}
return argMap;
}
/**
* Returns the value of the command line argument with the given
* name as an int.
*
* @param argv The arguments
* @param argName The name of the argument
* @param defaultValue The default value to use of no value was given
* @return The value of the argument
* @throws IllegalArgumentException If the given argument has
* no appropriate value
*/
public static int getCommandLineArgumentInt(String argv[], String argName,
int defaultValue)
{
Map argMap = createArgMap(argv);
String value = argMap.get(argName);
if (value == null)
{
return defaultValue;
}
try
{
return Integer.parseInt(value);
}
catch (NumberFormatException e)
{
throw new IllegalArgumentException(
"Argument '"+argName+"' has illegal int value '"+value+"'");
}
}
/**
* Returns the value of the command line argument with the given
* name as a float.
*
* @param argv The arguments
* @param argName The name of the argument
* @param defaultValue The default value to use of no value was given
* @return The value of the argument
* @throws IllegalArgumentException If the given argument has
* no appropriate value
*/
public static float getCommandLineArgumentFloat(String argv[], String argName,
float defaultValue)
{
Map argMap = createArgMap(argv);
String value = argMap.get(argName);
if (value == null)
{
return defaultValue;
}
try
{
return Float.parseFloat(value);
}
catch (NumberFormatException e)
{
throw new IllegalArgumentException(
"Argument '"+argName+"' has illegal float value '"+value+"'");
}
}
/**
* Returns the value of the command line argument with the given
* name as a String.
*
* @param argv The arguments
* @param argName The name of the argument
* @return The value of the argument
*/
public static String getCommandLineArgumentString(String argv[], String argName)
{
Map argMap = createArgMap(argv);
String value = argMap.get(argName);
return value;
}
/**
* Returns the value of the command line argument with the given
* name as a list of strings.
*
* @param argv The arguments
* @param argName The name of the argument
* @return The value of the argument
* @throws IllegalArgumentException If the given argument has
* no appropriate value
*/
public static List getCommandLineArgumentListString(String argv[], String argName)
{
Map argMap = createArgMap(argv);
String value = argMap.get(argName);
if (value==null)
{
return null;
}
if (!value.startsWith("[") || !value.endsWith("]"))
{
throw new IllegalArgumentException(
"Argument '"+argName+"' has illegal array value '"+value+"'");
}
value = value.substring(1, value.length()-1);
String values[] = value.split(",");
List result = new ArrayList();
for (String s : values)
{
result.add(s);
}
return result;
}
}
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