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优化代码规范

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This commit is contained in:
egzosn
2017-11-15 16:15:40 +08:00
parent a150310d48
commit 3bc018bcd2
1 changed files with 55 additions and 27 deletions
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82
pay-java-common/src/main/java/com/egzosn/pay/common/util/sign/encrypt/Base64.java
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@@ -153,9 +153,10 @@ public class Base64 {
Objects.requireNonNull(lineSeparator);
int[] base64 = Decoder.fromBase64;
for (byte b : lineSeparator) {
if (base64[b & 0xff] != -1)
if (base64[b & 0xff] != -1){
throw new IllegalArgumentException(
"Illegal base64 line separator character 0x" + Integer.toString(b, 16));
}
}
if (lineLength <= 0) {
return Encoder.RFC4648;
@@ -264,8 +265,9 @@ public class Base64 {
int n = srclen % 3;
len = 4 * (srclen / 3) + (n == 0 ? 0 : n + 1);
}
if (linemax > 0) // line separators
if (linemax > 0) { // line separators
len += (len - 1) / linemax * newline.length;
}
return len;
}
@@ -283,8 +285,9 @@ public class Base64 {
int len = outLength(src.length); // dst array size
byte[] dst = new byte[len];
int ret = encode0(src, 0, src.length, dst);
if (ret != dst.length)
if (ret != dst.length) {
return Arrays.copyOf(dst, ret);
}
return dst;
}
@@ -367,8 +370,9 @@ public class Base64 {
buffer.get(src);
ret = encode0(src, 0, src.length, dst);
}
if (ret != dst.length)
if (ret != dst.length) {
dst = Arrays.copyOf(dst, ret);
}
return ByteBuffer.wrap(dst);
}
@@ -415,8 +419,9 @@ public class Base64 {
int sp = off;
int slen = (end - off) / 3 * 3;
int sl = off + slen;
if (linemax > 0 && slen > linemax / 4 * 3)
if (linemax > 0 && slen > linemax / 4 * 3){
slen = linemax / 4 * 3;
}
int dp = 0;
while (sp < sl) {
int sl0 = Math.min(sp + slen, sl);
@@ -507,8 +512,9 @@ public class Base64 {
private static final int[] fromBase64 = new int[256];
static {
Arrays.fill(fromBase64, -1);
for (int i = 0; i < Encoder.toBase64.length; i++)
for (int i = 0; i < Encoder.toBase64.length; i++){
fromBase64[Encoder.toBase64[i]] = i;
}
fromBase64['='] = -2;
}
@@ -520,8 +526,9 @@ public class Base64 {
static {
Arrays.fill(fromBase64URL, -1);
for (int i = 0; i < Encoder.toBase64URL.length; i++)
for (int i = 0; i < Encoder.toBase64URL.length; i++){
fromBase64URL[Encoder.toBase64URL[i]] = i;
}
fromBase64URL['='] = -2;
}
@@ -568,6 +575,9 @@ public class Base64 {
* if {@code src} is not in valid Base64 scheme
*/
public byte[] decode(String src) {
if (null != src){
src = src.replaceAll("[\r\n]", "");
}
return decode(src.getBytes(StandardCharsets.ISO_8859_1));
}
@@ -673,11 +683,13 @@ public class Base64 {
int[] base64 = isURL ? fromBase64URL : fromBase64;
int paddings = 0;
int len = sl - sp;
if (len == 0)
if (len == 0){
return 0;
}
if (len < 2) {
if (isMIME && base64[0] == -1)
if (isMIME && base64[0] == -1){
return 0;
}
throw new IllegalArgumentException(
"Input byte[] should at least have 2 bytes for base64 bytes");
}
@@ -698,12 +710,14 @@ public class Base64 {
} else {
if (src[sl - 1] == '=') {
paddings++;
if (src[sl - 2] == '=')
if (src[sl - 2] == '=') {
paddings++;
}
}
}
if (paddings == 0 && (len & 0x3) != 0)
if (paddings == 0 && (len & 0x3) != 0) {
paddings = 4 - (len & 0x3);
}
return 3 * ((len + 3) / 4) - paddings;
}
@@ -728,12 +742,14 @@ public class Base64 {
}
break;
}
if (isMIME) // skip if for rfc2045
if (isMIME){ // skip if for rfc2045
continue;
else
}
else{
throw new IllegalArgumentException(
"Illegal base64 character " +
Integer.toString(src[sp - 1], 16));
}
}
bits |= (b << shiftto);
shiftto -= 6;
@@ -759,8 +775,9 @@ public class Base64 {
// anything left is invalid, if is not MIME.
// if MIME, ignore all non-base64 character
while (sp < sl) {
if (isMIME && base64[src[sp++]] < 0)
if (isMIME && base64[src[sp++]] < 0) {
continue;
}
throw new IllegalArgumentException(
"Input byte array has incorrect ending byte at " + sp);
}
@@ -808,12 +825,15 @@ public class Base64 {
@Override
public void write(byte[] b, int off, int len) throws IOException {
if (closed)
if (closed) {
throw new IOException("Stream is closed");
if (off < 0 || len < 0 || off + len > b.length)
}
if (off < 0 || len < 0 || off + len > b.length) {
throw new ArrayIndexOutOfBoundsException();
if (len == 0)
}
if (len == 0) {
return;
}
if (leftover != 0) {
if (leftover == 1) {
b1 = b[off++] & 0xff;
@@ -911,17 +931,21 @@ public class Base64 {
@Override
public int read(byte[] b, int off, int len) throws IOException {
if (closed)
if (closed) {
throw new IOException("Stream is closed");
if (eof && nextout < 0) // eof and no leftover
}
if (eof && nextout < 0) { // eof and no leftover
return -1;
if (off < 0 || len < 0 || len > b.length - off)
}
if (off < 0 || len < 0 || len > b.length - off) {
throw new IndexOutOfBoundsException();
}
int oldOff = off;
if (nextout >= 0) { // leftover output byte(s) in bits buf
do {
if (len == 0)
if (len == 0) {
return off - oldOff;
}
b[off++] = (byte)(bits >> nextout);
len--;
nextout -= 8;
@@ -933,8 +957,9 @@ public class Base64 {
if (v == -1) {
eof = true;
if (nextin != 18) {
if (nextin == 12)
if (nextin == 12) {
throw new IOException("Base64 stream has one un-decoded dangling byte.");
}
// treat ending xx/xxx without padding character legal.
// same logic as v == '=' below
b[off++] = (byte)(bits >> (16));
@@ -948,10 +973,11 @@ public class Base64 {
}
}
}
if (off == oldOff)
if (off == oldOff) {
return -1;
else
}else {
return off - oldOff;
}
}
if (v == '=') { // padding byte(s)
// = shiftto==18 unnecessary padding
@@ -976,11 +1002,12 @@ public class Base64 {
break;
}
if ((v = base64[v]) == -1) {
if (isMIME) // skip if for rfc2045
if (isMIME) { // skip if for rfc2045
continue;
else
}else {
throw new IOException("Illegal base64 character " +
Integer.toString(v, 16));
}
}
bits |= (v << nextin);
if (nextin == 0) {
@@ -1004,8 +1031,9 @@ public class Base64 {
@Override
public int available() throws IOException {
if (closed)
if (closed) {
throw new IOException("Stream is closed");
}
return is.available(); // TBD:
}