/** 对被压缩的字符串进行解压操作. */
private String doInflater(String str) {
try {
byte[] buf = ZIP_CODER.base64ToByteArray(str);
ByteArrayInputStream byteIn = new ByteArrayInputStream(buf);
InflaterInputStream in = new InflaterInputStream(byteIn);
ByteArrayOutputStream byteOut = new ByteArrayOutputStream(str.length() * 3 + 128);
Utility.copyStream(in, byteOut);
in.close();
byte[] result = byteOut.toByteArray();
return new String(result, "UTF-8");
} catch (IOException ex) {
// 这里不会出现IO异常因为全是内存操作
throw new Error();
}
}
/** 对字符串进行压缩操作. */
private String doDeflater(String str, BooleanRef ziped) {
if (str.length() < this.minCompressSize) {
ziped.value = false;
return str;
}
try {
ByteArrayOutputStream byteOut = new ByteArrayOutputStream(str.length() + 128);
DeflaterOutputStream out = new DeflaterOutputStream(byteOut);
byte[] buf = str.getBytes("UTF-8");
out.write(buf);
out.close();
byte[] result = byteOut.toByteArray();
ziped.value = true;
return ZIP_CODER.byteArrayToBase64(result);
} catch (IOException ex) {
// 这里不会出现IO异常因为全是内存操作
throw new Error();
}
}