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Annotate StringDataItems

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This commit is contained in:
Ben Gruver
2013-03-02 15:21:33 -08:00
parent 6d607ebe1d
commit 60d834f951
5 changed files with 96 additions and 6 deletions
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28
util/src/main/java/org/jf/util/Utf8Utils.java
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@ -24,12 +24,13 @@
package org.jf.util;
import javax.annotation.Nonnull;
import javax.annotation.Nullable;
/**
* Constants of type <code>CONSTANT_Utf8_info</code>.
*/
public final class Utf8Utils {
/**
* Converts a string into its Java-style UTF-8 form. Java-style UTF-8
* differs from normal UTF-8 in the handling of character '\0' and
@ -174,7 +175,21 @@ public final class Utf8Utils {
* @param utf16Length the number of utf16 characters in the string to decode
* @return non-null; the converted string
*/
public static String utf8BytesWithUtf16LengthToString(byte[] bytes, int start, int utf16Length) {
public static String utf8BytesWithUtf16LengthToString(@Nonnull byte[] bytes, int start, int utf16Length) {
return utf8BytesWithUtf16LengthToString(bytes, start, utf16Length, null);
}
/**
* Converts an array of UTF-8 bytes into a string.
*
* @param bytes non-null; the bytes to convert
* @param start the start index of the utf8 string to convert
* @param utf16Length the number of utf16 characters in the string to decode
* @param readLength If non-null, the first element will contain the number of bytes read after the method exits
* @return non-null; the converted string
*/
public static String utf8BytesWithUtf16LengthToString(@Nonnull byte[] bytes, int start, int utf16Length,
@Nullable int[] readLength) {
char[] chars = localBuffer.get();
if (chars == null || chars.length < utf16Length) {
chars = new char[utf16Length];
@ -182,7 +197,8 @@ public final class Utf8Utils {
}
int outAt = 0;
for (int at = start; utf16Length > 0; utf16Length--) {
int at = 0;
for (at = start; utf16Length > 0; utf16Length--) {
int v0 = bytes[at] & 0xFF;
char out;
switch (v0 >> 4) {
@ -247,6 +263,10 @@ public final class Utf8Utils {
outAt++;
}
if (readLength != null && readLength.length > 0) {
readLength[0] = at - start;
readLength[0] = at - start;
}
return new String(chars, 0, outAt);
}