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Merge pull request #724 from andrewgaul/hex-cut-and-paste 

Remove duplicated hexadecimal conversion code
This commit is contained in:
Adrian Cole 2012-07-17 15:24:21 -07:00
parent 007eba6d7c d82dd32c64
commit 62e8c59385
1 changed files with 14 additions and 21 deletions
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35
core/src/main/java/org/jclouds/crypto/CryptoStreams.java
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@ -49,20 +49,21 @@ import com.google.common.io.InputSupplier;
@Beta
public class CryptoStreams {
public static String hex(byte[] in) {
byte[] hex = new byte[2 * in.length];
private static char[] hex(byte[] in, int offset, int len) {
char[] hex = new char[2 * len];
int index = 0;
for (byte b : in) {
for (int i = offset; i < offset + len; ++i) {
byte b = in[i];
int v = b & 0xFF;
hex[index++] = HEX_CHAR_TABLE[v >>> 4];
hex[index++] = HEX_CHAR_TABLE[v & 0xF];
}
try {
return new String(hex, "ASCII");
} catch (UnsupportedEncodingException e) {
throw new RuntimeException(e);
}
return hex;
}
public static String hex(byte[] in) {
return new String(hex(in, 0, in.length));
}
public static byte[] hex(String s) {
@ -295,9 +296,10 @@ public class CryptoStreams {
});
}
final static byte[] HEX_CHAR_TABLE = { (byte) '0', (byte) '1', (byte) '2', (byte) '3', (byte) '4', (byte) '5',
(byte) '6', (byte) '7', (byte) '8', (byte) '9', (byte) 'a', (byte) 'b', (byte) 'c', (byte) 'd', (byte) 'e',
(byte) 'f' };
private final static char[] HEX_CHAR_TABLE = {
'0', '1', '2', '3', '4', '5', '6', '7',
'8', '9', 'a', 'b', 'c', 'd', 'e', 'f',
};
/**
* Computes and returns the hex value for a supplied input stream.
@ -313,16 +315,7 @@ public class CryptoStreams {
final StringBuilder out = new StringBuilder();
return com.google.common.io.ByteStreams.readBytes(supplier, new ByteProcessor<String>() {
public boolean processBytes(byte[] buf, int off, int len) {
char[] hex = new char[2 * len];
int index = 0;
for (int i = off; i < off + len; i++) {
byte b = buf[i];
int v = b & 0xFF;
hex[index++] = (char) HEX_CHAR_TABLE[v >>> 4];
hex[index++] = (char) HEX_CHAR_TABLE[v & 0xF];
}
out.append(hex);
out.append(hex(buf, off, len));
return true;
}