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Hyphenate @RestHeader name by default
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85 changes: 85 additions & 0 deletions
85
...mmon/processor/src/main/java/org/jboss/resteasy/reactive/common/processor/StringUtil.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,85 @@ | ||
| package org.jboss.resteasy.reactive.common.processor; | ||
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| import java.util.Iterator; | ||
| import java.util.NoSuchElementException; | ||
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| public class StringUtil { | ||
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| public static Iterator<String> camelHumpsIterator(final String str) { | ||
| return new Iterator<String>() { | ||
| int idx; | ||
|
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| public boolean hasNext() { | ||
| return idx < str.length(); | ||
| } | ||
|
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| public String next() { | ||
| if (idx == str.length()) | ||
| throw new NoSuchElementException(); | ||
| // known mixed-case rule-breakers | ||
| if (str.startsWith("JBoss", idx)) { | ||
| idx += 5; | ||
| return "JBoss"; | ||
| } | ||
| final int start = idx; | ||
| int c = str.codePointAt(idx); | ||
| if (Character.isUpperCase(c)) { | ||
| // an uppercase-starting word | ||
| idx = str.offsetByCodePoints(idx, 1); | ||
| if (idx < str.length()) { | ||
| c = str.codePointAt(idx); | ||
| if (Character.isUpperCase(c)) { | ||
| // all-caps word; need one look-ahead | ||
| int nextIdx = str.offsetByCodePoints(idx, 1); | ||
| while (nextIdx < str.length()) { | ||
| c = str.codePointAt(nextIdx); | ||
| if (Character.isLowerCase(c)) { | ||
| // ended at idx | ||
| return str.substring(start, idx); | ||
| } | ||
| idx = nextIdx; | ||
| nextIdx = str.offsetByCodePoints(idx, 1); | ||
| } | ||
| // consumed the whole remainder, update idx to length | ||
| idx = str.length(); | ||
| return str.substring(start); | ||
| } else { | ||
| // initial caps, trailing lowercase | ||
| idx = str.offsetByCodePoints(idx, 1); | ||
| while (idx < str.length()) { | ||
| c = str.codePointAt(idx); | ||
| if (Character.isUpperCase(c)) { | ||
| // end | ||
| return str.substring(start, idx); | ||
| } | ||
| idx = str.offsetByCodePoints(idx, 1); | ||
| } | ||
| // consumed the whole remainder | ||
| return str.substring(start); | ||
| } | ||
| } else { | ||
| // one-letter word | ||
| return str.substring(start); | ||
| } | ||
| } else { | ||
| // a lowercase-starting word | ||
| idx = str.offsetByCodePoints(idx, 1); | ||
| while (idx < str.length()) { | ||
| c = str.codePointAt(idx); | ||
| if (Character.isUpperCase(c)) { | ||
| // end | ||
| return str.substring(start, idx); | ||
| } | ||
| idx = str.offsetByCodePoints(idx, 1); | ||
| } | ||
| // consumed the whole remainder | ||
| return str.substring(start); | ||
| } | ||
| } | ||
| }; | ||
| } | ||
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| public static String hyphenate(final String orig) { | ||
| return String.join("-", (Iterable<String>) () -> camelHumpsIterator(orig)); | ||
| } | ||
| } |