diff options
Diffstat (limited to 'utils/src/main/java/at/gv/egiz/bku/utils/URLEncodingInputStream.java')
-rw-r--r-- | utils/src/main/java/at/gv/egiz/bku/utils/URLEncodingInputStream.java | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/utils/src/main/java/at/gv/egiz/bku/utils/URLEncodingInputStream.java b/utils/src/main/java/at/gv/egiz/bku/utils/URLEncodingInputStream.java new file mode 100644 index 00000000..28ef6b88 --- /dev/null +++ b/utils/src/main/java/at/gv/egiz/bku/utils/URLEncodingInputStream.java @@ -0,0 +1,62 @@ +/** + * + */ +package at.gv.egiz.bku.utils; + +import java.io.IOException; +import java.io.InputStream; +import java.nio.CharBuffer; + +/** + * @author mcentner + * + */ +public class URLEncodingInputStream extends InputStream { + + private char[] buffer = new char[1]; + + private CharBuffer charBuffer = CharBuffer.wrap(buffer); + + protected Readable in; + + /** + * @param in + */ + public URLEncodingInputStream(Readable in) { + this.in = in; + } + + /* (non-Javadoc) + * @see java.io.InputStream#read() + */ + @Override + public int read() throws IOException { + charBuffer.rewind(); + if (in.read(charBuffer) == -1) { + return -1; + } + if (buffer[0] == '+') { + return ' '; + } else if (buffer[0] == '%') { + charBuffer.rewind(); + if (in.read(charBuffer) == -1) { + throw new IOException("Invalid URL encoding."); + } + int c1 = Character.digit(buffer[0], 16); + charBuffer.rewind(); + if (in.read(charBuffer) == -1) { + throw new IOException("Invalid URL encoding."); + } + int c2 = Character.digit(buffer[0], 16); + if (c1 == -1 || c2 == -1) { + throw new IOException("Invalid URL encoding."); + } + return ((c1 << 4) | c2); + } else { + return buffer[0]; + } + } + + + +} |