/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2001-2008, Open Source Geospatial Foundation (OSGeo)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
package org.geotools.resources;
/**
* A set of utilities for characters handling.
*
* @since 2.1
*
* @source $URL$
* @version $Id$
* @author Martin Desruisseaux (IRD)
*/
public final class CharUtilities {
/**
* Forbid object creation.
*/
private CharUtilities() {
}
/**
* Determines whether the character is a superscript. Most superscripts have
* unicode values from \\u2070 to \\u207F inclusive. Superscripts are the
* following symbols:
*
* <blockquote><code>
* \u2070 \u00B9 \u00B2 \u00B3 \u2074 \u2075 \u2076 \u2077
* \u2078 \u2079 \u207A \u207B \u207C \u207D \u207E \u207F
* </code></blockquote>
*/
public static boolean isSuperScript(final char c) {
switch (c) {
/*1*/case '\u2071':
/*2*/case '\u2072':
/*3*/case '\u2073': return false;
/*1*/case '\u00B9':
/*2*/case '\u00B2':
/*3*/case '\u00B3': return true;
}
return (c>='\u2070' && c<='\u207F');
}
/**
* Determines whether the character is a subscript. Most subscripts have
* unicode values from \\u2080 to \\u208E inclusive. Subscripts are the
* following symbols:
*
* <blockquote><code>
* \u2080 \u2081 \u2082 \u2083 \u2084 \u2085 \u2086 \u2087
* \u2088 \u2089 \u208A \u208B \u208C \u208D \u208E
* </code></blockquote>
*/
public static boolean isSubScript(final char c) {
return (c>='\u2080' && c<='\u208E');
}
/**
* Converts the character argument to superscript.
* Only the following characters can be converted
* (other characters are left unchanged):
*
* <blockquote><pre>
* 0 1 2 3 4 5 6 7 8 9 + - = ( ) n
* </pre></blockquote>
*/
public static char toSuperScript(final char c) {
switch (c) {
case '1': return '\u00B9';
case '2': return '\u00B2';
case '3': return '\u00B3';
case '+': return '\u207A';
case '-': return '\u207B';
case '=': return '\u207C';
case '(': return '\u207D';
case ')': return '\u207E';
case 'n': return '\u207F';
}
if (c>='0' && c<='9') {
return (char) (c+('\u2070'-'0'));
}
return c;
}
/**
* Converts the character argument to subscript.
* Only the following characters can be converted
* (other characters are left unchanged):
*
* <blockquote><pre>
* 0 1 2 3 4 5 6 7 8 9 + - = ( ) n
* </pre></blockquote>
*/
public static char toSubScript(final char c) {
switch (c) {
case '+': return '\u208A';
case '-': return '\u208B';
case '=': return '\u208C';
case '(': return '\u208D';
case ')': return '\u208E';
}
if (c>='0' && c<='9') {
return (char) (c+('\u2080'-'0'));
}
return c;
}
/**
* Converts the character argument to normal script.
*/
public static char toNormalScript(final char c) {
switch (c) {
case '\u00B9': return '1';
case '\u00B2': return '2';
case '\u00B3': return '3';
case '\u2071': return c;
case '\u2072': return c;
case '\u2073': return c;
case '\u207A': return '+';
case '\u207B': return '-';
case '\u207C': return '=';
case '\u207D': return '(';
case '\u207E': return ')';
case '\u207F': return 'n';
case '\u208A': return '+';
case '\u208B': return '-';
case '\u208C': return '=';
case '\u208D': return '(';
case '\u208E': return ')';
}
if (c>='\u2070' && c<='\u2079') return (char) (c-('\u2070'-'0'));
if (c>='\u2080' && c<='\u2089') return (char) (c-('\u2080'-'0'));
return c;
}
}