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# Conflicts: # dependencies.gradle
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package appeng.api.config; | ||
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import java.util.Comparator; | ||
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import appeng.util.AlphanumComparator; | ||
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public enum StringOrder { | ||
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NATURAL(Comparator.naturalOrder()), | ||
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ALPHANUM(AlphanumComparator.INSTANCE); | ||
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public final Comparator<String> comparator; | ||
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StringOrder(Comparator<String> comparator) { | ||
this.comparator = comparator; | ||
} | ||
} |
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package appeng.util; | ||
// This code is copied from the library https://github.com/metamx/alphanum | ||
// spotless:off | ||
/* | ||
* The Alphanum Algorithm is an improved sorting algorithm for strings | ||
* containing numbers. Instead of sorting numbers in ASCII order like | ||
* a standard sort, this algorithm sorts numbers in numeric order. | ||
* | ||
* The Alphanum Algorithm is discussed at http://www.DaveKoelle.com | ||
* | ||
* | ||
* 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; either | ||
* version 2.1 of the License, or any later version. | ||
* | ||
* 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. | ||
* | ||
* You should have received a copy of the GNU Lesser General Public | ||
* License along with this library; if not, write to the Free Software | ||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
* | ||
*/ | ||
// spotless:on | ||
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import java.util.Comparator; | ||
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/** | ||
* This is an updated version with enhancements made by Daniel Migowski, Andre Bogus, and David Koelle | ||
*/ | ||
public class AlphanumComparator implements Comparator<String> { | ||
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public final static AlphanumComparator INSTANCE = new AlphanumComparator(); | ||
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private final boolean isDigit(char ch) { | ||
return ch >= 48 && ch <= 57; | ||
} | ||
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/** | ||
* Length of string is passed in for improved efficiency (only need to calculate it once) * | ||
*/ | ||
private final String getChunk(String s, int slength, int marker) { | ||
StringBuilder chunk = new StringBuilder(); | ||
char c = s.charAt(marker); | ||
chunk.append(c); | ||
marker++; | ||
if (isDigit(c)) { | ||
while (marker < slength) { | ||
c = s.charAt(marker); | ||
if (!isDigit(c)) break; | ||
chunk.append(c); | ||
marker++; | ||
} | ||
} else { | ||
while (marker < slength) { | ||
c = s.charAt(marker); | ||
if (isDigit(c)) break; | ||
chunk.append(c); | ||
marker++; | ||
} | ||
} | ||
return chunk.toString(); | ||
} | ||
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public int compare(String s1, String s2) { | ||
if (s1 == null || s2 == null) { | ||
return 0; | ||
} | ||
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int thisMarker = 0; | ||
int thatMarker = 0; | ||
int s1Length = s1.length(); | ||
int s2Length = s2.length(); | ||
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while (thisMarker < s1Length && thatMarker < s2Length) { | ||
String thisChunk = getChunk(s1, s1Length, thisMarker); | ||
thisMarker += thisChunk.length(); | ||
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String thatChunk = getChunk(s2, s2Length, thatMarker); | ||
thatMarker += thatChunk.length(); | ||
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// If both chunks contain numeric characters, sort them numerically | ||
int result = 0; | ||
if (isDigit(thisChunk.charAt(0)) && isDigit(thatChunk.charAt(0))) { | ||
// Simple chunk comparison by length. | ||
int thisChunkLength = thisChunk.length(); | ||
result = thisChunkLength - thatChunk.length(); | ||
// If equal, the first different number counts | ||
if (result == 0) { | ||
for (int i = 0; i < thisChunkLength; i++) { | ||
result = thisChunk.charAt(i) - thatChunk.charAt(i); | ||
if (result != 0) { | ||
return result; | ||
} | ||
} | ||
} | ||
} else { | ||
result = thisChunk.compareTo(thatChunk); | ||
} | ||
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if (result != 0) return result; | ||
} | ||
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return s1Length - s2Length; | ||
} | ||
} |
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