LegacyConsole/jpexs-decompiler
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compress/uncompress methods

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This commit is contained in:
honfika@gmail.com
2015-05-15 16:08:55 +02:00
parent 357d35ed17
commit 6cf53543d1
2 changed files with 25 additions and 9 deletions
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26
libsrc/ffdec_lib/src/com/jpexs/decompiler/flash/SWFInputStream.java
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@@ -297,6 +297,8 @@ public class SWFInputStream implements AutoCloseable {
private static final Logger logger = Logger.getLogger(SWFInputStream.class.getName());
private static final byte[] BYTE_ARRAY_EMPTY = new byte[0];
private final List<ProgressListener> listeners = new ArrayList<>();
private long percentMax;
@@ -694,7 +696,7 @@ public class SWFInputStream implements AutoCloseable {
*/
public byte[] readBytesEx(long count, String name) throws IOException {
if (count <= 0) {
return new byte[0];
return BYTE_ARRAY_EMPTY;
}
newDumpLevel(name, "bytes");
byte[] ret = readBytesInternalEx(count);
@@ -730,7 +732,7 @@ public class SWFInputStream implements AutoCloseable {
*/
private byte[] readBytesInternalEx(long count) throws IOException {
if (count <= 0) {
return new byte[0];
return BYTE_ARRAY_EMPTY;
}
bitPos = 0;
@@ -787,7 +789,7 @@ public class SWFInputStream implements AutoCloseable {
*/
public byte[] readBytes(int count, String name) throws IOException {
if (count <= 0) {
return new byte[0];
return BYTE_ARRAY_EMPTY;
}
newDumpLevel(name, "bytes");
byte[] ret = new byte[count];
@@ -805,17 +807,23 @@ public class SWFInputStream implements AutoCloseable {
}
public byte[] readBytesZlib(long count, String name) throws IOException {
if (count == 0) {
return BYTE_ARRAY_EMPTY;
}
newDumpLevel(name, "bytesZlib");
byte[] data = readBytesInternalEx(count);
endDumpLevel();
return uncompressByteArray(data);
}
public static byte[] uncompressByteArray(byte[] data) throws IOException {
InflaterInputStream dis = new InflaterInputStream(new ByteArrayInputStream(data));
ByteArrayOutputStream baos = new ByteArrayOutputStream();
if (count > 0) {
byte[] buf = new byte[4096];
int c = 0;
while ((c = dis.read(buf)) > 0) {
baos.write(buf, 0, c);
}
byte[] buf = new byte[4096];
int c = 0;
while ((c = dis.read(buf)) > 0) {
baos.write(buf, 0, c);
}
return baos.toByteArray();
}