net.sourceforge.argparse4j.impl.type

Class FileArgumentType

java.lang.Object

net.sourceforge.argparse4j.impl.type.FileArgumentType

All Implemented Interfaces:

ArgumentType<File>

public class FileArgumentType
extends Object
implements ArgumentType<File>

ArgumentType subclass for File type, using fluent style API. This object can convert path string to File object. The command-line programs traditionally accept the file path "-" as standard input. This object supports this when acceptSystemIn() is used. Also there are several convenient verification features such as checking readability or existence.

Constructor Summary

Constructors

Constructor and Description
FileArgumentType()

Method Summary

Modifier and Type	Method and Description
FileArgumentType	acceptSystemIn() If the argument is "-", accept it as standard input.
File	convert(ArgumentParser parser, Argument arg, String value) Converts value to appropriate type.
FileArgumentType	or() Start a new verification group.
FileArgumentType	verifyCanCreate() Verifies that the specified path is writable.
FileArgumentType	verifyCanExecute() Verifies that the specified path is executable.
FileArgumentType	verifyCanRead() Verifies that the specified path is readable.
FileArgumentType	verifyCanWrite() Verifies that the specified path is writable.
FileArgumentType	verifyCanWriteParent() Verifies that the parent directory of the specified path is writable.
FileArgumentType	verifyExists() Verifies that the specified path exists.
FileArgumentType	verifyIsAbsolute() Verifies that the specified path is an absolute path.
FileArgumentType	verifyIsDirectory() Verifies that the specified path is a directory.
FileArgumentType	verifyIsFile() Verifies that the specified path is a regular file.
FileArgumentType	verifyNotExists() Verifies that the specified path does not exist.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FileArgumentType

public FileArgumentType()

Method Detail

acceptSystemIn

public FileArgumentType acceptSystemIn()

If the argument is "-", accept it as standard input. If this method is used, all verification methods will be ignored.

Returns:

this

verifyExists

public FileArgumentType verifyExists()

Verifies that the specified path exists. If the verification fails, error will be reported.

Returns:

this

verifyNotExists

public FileArgumentType verifyNotExists()

Verifies that the specified path does not exist. If the verification fails, error will be reported.

Returns:

this

verifyIsFile

public FileArgumentType verifyIsFile()

Verifies that the specified path is a regular file. If the verification fails, error will be reported.

Returns:

this

verifyIsDirectory

public FileArgumentType verifyIsDirectory()

Verifies that the specified path is a directory. If the verification fails, error will be reported.

Returns:

this

verifyCanRead

public FileArgumentType verifyCanRead()

Verifies that the specified path is readable. If the verification fails, error will be reported.

Returns:

this

verifyCanWrite

public FileArgumentType verifyCanWrite()

Verifies that the specified path is writable. If the verification fails, error will be reported.

Returns:

this

verifyCanWriteParent

public FileArgumentType verifyCanWriteParent()

Verifies that the parent directory of the specified path is writable. If the verification fails, error will be reported.

Returns:

this

verifyCanCreate

public FileArgumentType verifyCanCreate()

Verifies that the specified path is writable. If the verification fails, error will be reported.

Returns:

this

verifyCanExecute

public FileArgumentType verifyCanExecute()

Verifies that the specified path is executable. If the verification fails, error will be reported.

Returns:

this

verifyIsAbsolute

public FileArgumentType verifyIsAbsolute()

Verifies that the specified path is an absolute path. If the verification fails, error will be reported.

Returns:

this

or

public FileArgumentType or()

Start a new verification group. Of all verification groups at least 1 must be verified successfully for the file to be accepted.

Returns:

this

convert

public File convert(ArgumentParser parser,
                    Argument arg,
                    String value)
             throws ArgumentParserException

Description copied from interface: ArgumentType

Converts value to appropriate type.

If the objects derived from RuntimeException are thrown in conversion because of invalid input from command line, subclass must catch these exceptions and wrap them in ArgumentParserException and give simple error message to explain what happened briefly.

Specified by:

convert in interface ArgumentType<File>

Parameters:

parser - The parser.

arg - The argument this type attached to.

value - The attribute value.

Returns:

Converted object.

Throws:

ArgumentParserException - If conversion fails.