org.apache.commons.cli
Class PatternOptionBuilder
java.lang.Object
org.apache.commons.cli.PatternOptionBuilder
public class PatternOptionBuilder
extends java.lang.Object
Allows Options to be created from a single String.
The pattern contains various single character flags and via
an optional punctuation character, their expected type.
a | -a flag |
b@ | -b [classname] |
c> | -c [filename] |
d+ | -d [classname] (creates object via empty contructor) |
e% | -e [number] (creates Double/Long instance depeding on existing of a '.') |
f/ | -f [url] |
g: | -g [string] |
For example, the following allows command line flags of '-v -p string-value -f /dir/file'.
Options options = PatternOptionBuilder.parsePattern("vp:f/");
TODO These need to break out to OptionType and also
to be pluggable.
- Henri Yandell (bayard @ generationjava.com)
CLASS_VALUE
public static final Class CLASS_VALUE
Class class
DATE_VALUE
public static final Class DATE_VALUE
Date class
EXISTING_FILE_VALUE
public static final Class EXISTING_FILE_VALUE
FileInputStream class
FILES_VALUE
public static final Class FILES_VALUE
File array class
FILE_VALUE
public static final Class FILE_VALUE
File class
NUMBER_VALUE
public static final Class NUMBER_VALUE
Number class
OBJECT_VALUE
public static final Class OBJECT_VALUE
Object class
STRING_VALUE
public static final Class STRING_VALUE
String class
URL_VALUE
public static final Class URL_VALUE
URL class
getValueClass
public static Object getValueClass(char ch)
Retrieve the class that ch
represents.
ch
- the specified character
- The class that
ch
represents
isValueCode
public static boolean isValueCode(char ch)
Returns whether ch
is a value code, i.e.
whether it represents a class in a pattern.
ch
- the specified character
- true if
ch
is a value code, otherwise false.
parsePattern
public static Options parsePattern(String pattern)
Returns the
Options
instance represented by
pattern
.
pattern
- the pattern string