diff options
Diffstat (limited to 'third_party/java/jopt-simple/src/main/java/joptsimple/ParserRules.java')
-rw-r--r-- | third_party/java/jopt-simple/src/main/java/joptsimple/ParserRules.java | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/third_party/java/jopt-simple/src/main/java/joptsimple/ParserRules.java b/third_party/java/jopt-simple/src/main/java/joptsimple/ParserRules.java new file mode 100644 index 0000000000..34ef7814d5 --- /dev/null +++ b/third_party/java/jopt-simple/src/main/java/joptsimple/ParserRules.java @@ -0,0 +1,84 @@ +/* + The MIT License + + Copyright (c) 2004-2015 Paul R. Holser, Jr. + + 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 joptsimple; + +import java.util.List; + +import static java.lang.Character.*; + +/** + * Can tell whether or not options are well-formed. + * + * @author <a href="mailto:pholser@alumni.rice.edu">Paul Holser</a> + */ +final class ParserRules { + static final char HYPHEN_CHAR = '-'; + static final String HYPHEN = String.valueOf( HYPHEN_CHAR ); + static final String DOUBLE_HYPHEN = "--"; + static final String OPTION_TERMINATOR = DOUBLE_HYPHEN; + static final String RESERVED_FOR_EXTENSIONS = "W"; + + private ParserRules() { + throw new UnsupportedOperationException(); + } + + static boolean isShortOptionToken( String argument ) { + return argument.startsWith( HYPHEN ) + && !HYPHEN.equals( argument ) + && !isLongOptionToken( argument ); + } + + static boolean isLongOptionToken( String argument ) { + return argument.startsWith( DOUBLE_HYPHEN ) && !isOptionTerminator( argument ); + } + + static boolean isOptionTerminator( String argument ) { + return OPTION_TERMINATOR.equals( argument ); + } + + static void ensureLegalOption( String option ) { + if ( option.startsWith( HYPHEN ) ) + throw new IllegalOptionSpecificationException( String.valueOf( option ) ); + + for ( int i = 0; i < option.length(); ++i ) + ensureLegalOptionCharacter( option.charAt( i ) ); + } + + static void ensureLegalOptions( List<String> options ) { + for ( String each : options ) + ensureLegalOption( each ); + } + + private static void ensureLegalOptionCharacter( char option ) { + if ( !( isLetterOrDigit( option ) || isAllowedPunctuation( option ) ) ) + throw new IllegalOptionSpecificationException( String.valueOf( option ) ); + } + + private static boolean isAllowedPunctuation( char option ) { + String allowedPunctuation = "?._" + HYPHEN_CHAR; + return allowedPunctuation.indexOf( option ) != -1; + } +} |