only keep the sources

[fanfix.git] / src / be / nikiroo / utils / streams / ReplaceInputStream.java

diff --git a/src/be/nikiroo/utils/streams/ReplaceInputStream.java b/src/be/nikiroo/utils/streams/ReplaceInputStream.java
deleted file mode 100644 (file)
index 1cc5139..0000000
--- a/src/be/nikiroo/utils/streams/ReplaceInputStream.java
+++ /dev/null
@@ -1,162 +0,0 @@
-package be.nikiroo.utils.streams;
-
-import java.io.IOException;
-import java.io.InputStream;
-
-import be.nikiroo.utils.StringUtils;
-
-/**
- * This {@link InputStream} will change some of its content by replacing it with
- * something else.
- * 
- * @author niki
- */
-public class ReplaceInputStream extends BufferedInputStream {
-       /**
-        * The minimum size of the internal buffer (could be more if at least one of
-        * the 'FROM' bytes arrays is > 2048 bytes — in that case the
-        * buffer will be twice the largest size of the 'FROM' bytes arrays).
-        * <p>
-        * This is a different buffer than the one from the inherited class.
-        */
-       static private final int MIN_BUFFER_SIZE = 4096;
-
-       private byte[][] froms;
-       private byte[][] tos;
-       private int maxFromSize;
-       private int maxToSize;
-
-       private byte[] source;
-       private int spos;
-       private int slen;
-
-       /**
-        * Create a {@link ReplaceInputStream} that will replace <tt>from</tt> with
-        * <tt>to</tt>.
-        * 
-        * @param in
-        *            the under-laying {@link InputStream}
-        * @param from
-        *            the {@link String} to replace
-        * @param to
-        *            the {@link String} to replace with
-        */
-       public ReplaceInputStream(InputStream in, String from, String to) {
-               this(in, StringUtils.getBytes(from), StringUtils.getBytes(to));
-       }
-
-       /**
-        * Create a {@link ReplaceInputStream} that will replace <tt>from</tt> with
-        * <tt>to</tt>.
-        * 
-        * @param in
-        *            the under-laying {@link InputStream}
-        * @param from
-        *            the value to replace
-        * @param to
-        *            the value to replace with
-        */
-       public ReplaceInputStream(InputStream in, byte[] from, byte[] to) {
-               this(in, new byte[][] { from }, new byte[][] { to });
-       }
-
-       /**
-        * Create a {@link ReplaceInputStream} that will replace all <tt>froms</tt>
-        * with <tt>tos</tt>.
-        * <p>
-        * Note that they will be replaced in order, and that for each <tt>from</tt>
-        * a <tt>to</tt> must correspond.
-        * 
-        * @param in
-        *            the under-laying {@link InputStream}
-        * @param froms
-        *            the values to replace
-        * @param tos
-        *            the values to replace with
-        */
-       public ReplaceInputStream(InputStream in, String[] froms, String[] tos) {
-               this(in, StreamUtils.getBytes(froms), StreamUtils.getBytes(tos));
-       }
-
-       /**
-        * Create a {@link ReplaceInputStream} that will replace all <tt>froms</tt>
-        * with <tt>tos</tt>.
-        * <p>
-        * Note that they will be replaced in order, and that for each <tt>from</tt>
-        * a <tt>to</tt> must correspond.
-        * 
-        * @param in
-        *            the under-laying {@link InputStream}
-        * @param froms
-        *            the values to replace
-        * @param tos
-        *            the values to replace with
-        */
-       public ReplaceInputStream(InputStream in, byte[][] froms, byte[][] tos) {
-               super(in);
-
-               if (froms.length != tos.length) {
-                       throw new IllegalArgumentException(
-                                       "For replacing, each FROM must have a corresponding TO");
-               }
-
-               this.froms = froms;
-               this.tos = tos;
-
-               maxFromSize = 0;
-               for (int i = 0; i < froms.length; i++) {
-                       maxFromSize = Math.max(maxFromSize, froms[i].length);
-               }
-
-               maxToSize = 0;
-               for (int i = 0; i < tos.length; i++) {
-                       maxToSize = Math.max(maxToSize, tos[i].length);
-               }
-
-               // We need at least maxFromSize so we can iterate and replace
-               source = new byte[Math.max(2 * maxFromSize, MIN_BUFFER_SIZE)];
-               spos = 0;
-               slen = 0;
-       }
-
-       @Override
-       protected int read(InputStream in, byte[] buffer, int off, int len)
-                       throws IOException {
-               if (len < maxToSize || source.length < maxToSize * 2) {
-                       throw new IOException(
-                                       "An underlaying buffer is too small for these replace values");
-               }
-
-               // We need at least one byte of data to process
-               if (available() < Math.max(maxFromSize, 1) && !eof) {
-                       spos = 0;
-                       slen = in.read(source);
-               }
-
-               // Note: very simple, not efficient implementation; sorry.
-               int count = 0;
-               while (spos < slen && count < len - maxToSize) {
-                       boolean replaced = false;
-                       for (int i = 0; i < froms.length; i++) {
-                               if (froms[i] != null && froms[i].length > 0
-                                               && StreamUtils.startsWith(froms[i], source, spos, slen)) {
-                                       if (tos[i] != null && tos[i].length > 0) {
-                                               System.arraycopy(tos[i], 0, buffer, off + spos,
-                                                               tos[i].length);
-                                               count += tos[i].length;
-                                       }
-
-                                       spos += froms[i].length;
-                                       replaced = true;
-                                       break;
-                               }
-                       }
-
-                       if (!replaced) {
-                               buffer[off + count++] = source[spos++];
-                       }
-               }
-
-               return count;
-       }
-}