--- /dev/null
+// Copyright 2000-2007 the Contributors, as shown in the revision logs.
+// Licensed under the Apache Public Source License 2.0 ("the License").
+// You may not use this file except in compliance with the License.
+
+package org.ibex.io;
+import java.io.*;
+
+/** package-private class */
+abstract class ByteBufInputStream extends InputStream {
+
+ private InputStream is;
+ public InputStream next;
+ private byte[] buf = new byte[8192];
+ private int start = 0;
+ private int end = 0;
+
+ public ByteBufInputStream(InputStream is) {
+ this.is = is;
+ }
+
+ private int bufSize() { if (end==start) { end = start = 0; } return end-start; }
+ private int fillBufIfEmpty() {
+ try {
+ if (bufSize() > 0) return bufSize();
+ start = 0;
+ do {
+ end = is.read(buf, 0, buf.length);
+ if (end == -1 && next != null) {
+ is.close();
+ is = next;
+ continue;
+ }
+ } while(end==0);
+ if (end == -1) { end = 0; return -1; }
+ return end;
+ } catch (IOException e) { Stream.ioe(e); return -1; }
+ }
+
+ public int available() { return end-start; }
+ public void close() {
+ try {
+ if (is != null) is.close();
+ if (next != null) next.close();
+ } catch (IOException e) { Stream.ioe(e); }
+ }
+
+ private boolean prereading = false;
+ public abstract void preread();
+ public int read() { byte[] b = new byte[0]; if (read(b, 0, 1)<=0) return -1; return b[0] & 0xff; }
+ public int read(byte[] c, int pos, int len) {
+ if (prereading) return -1;
+ prereading = true;
+ try {
+ preread();
+ } finally { prereading = false; }
+ if (fillBufIfEmpty() == -1) return -1;
+ if (len > end - start) len = end - start;
+ System.arraycopy(buf, start, c, pos, len);
+ start += len;
+ return len;
+ }
+
+ public void pushback(byte[] b, int off, int len) {
+ if (len <= 0) return;
+ if (start-len < 0) {
+ /* FIXME, this allocates too often */
+ byte[] newbuf = new byte[len+(end-start)];
+ System.arraycopy(buf, start, newbuf, len, (end-start));
+ buf = newbuf;
+ end = len + (end-start);
+ start = len;
+ }
+ System.arraycopy(b, off, buf, start-len, len);
+ start -= len;
+ }
+}
--- /dev/null
+// Copyright 2000-2007 the Contributors, as shown in the revision logs.
+// Licensed under the Apache Public Source License 2.0 ("the License").
+// You may not use this file except in compliance with the License.
+
+package org.ibex.io;
+import java.io.*;
+
+/** package-private class */
+class CharBufReader extends Reader {
+
+ private Reader reader;
+ private char[] buf = new char[8192];
+ private int start = 0;
+ private int end = 0;
+
+ public CharBufReader(Reader r) { this.reader = r; }
+
+ public boolean ready() throws IOException { return bufSize()>0; }
+ private int bufSize() { if (end==start) { end=start=0; } return end-start; }
+ private int fillBufIfEmpty() {
+ try {
+ if (bufSize() > 0) return bufSize();
+ start = 0;
+ do {
+ end = reader.read(buf, 0, buf.length);
+ } while(end==0);
+ if (end == -1) { end = 0; return -1; }
+ return end;
+ } catch (IOException e) { Stream.ioe(e); return -1; }
+ }
+
+ public int available() { return end-start; }
+ public void close() {
+ try {
+ if (reader != null) reader.close();
+ } catch (IOException e) { Stream.ioe(e); }
+ }
+
+ public int read(char[] c, int pos, int len) {
+ if (fillBufIfEmpty() == -1) return -1;
+ if (len > end - start) len = end - start;
+ System.arraycopy(buf, start, c, pos, len);
+ start += len;
+ return len;
+ }
+
+ public char getc(boolean peek) {
+ if (fillBufIfEmpty() <= 0) throw new Stream.EOF();
+ return peek ? buf[start] : buf[start++];
+ }
+
+ private StringBuffer lineReaderStringBuffer = new StringBuffer();
+ public String readln() {
+ lineReaderStringBuffer.setLength(0);
+ boolean readsome = false;
+ OUT: while(true) {
+ if (fillBufIfEmpty() <= 0) break;
+ readsome = true;
+ for(int i=start; i<end; i++)
+ if (buf[i] == '\n') {
+ // this should (in theory) handle CR, LF,
+ // CRLF, and LFCR properly, assuming that the
+ // file consistently uses the same ending
+ // throughout.
+ int begin = start;
+ int len = i-start;
+ start = i+1;
+ if (buf[begin] == '\r') { begin++; len--; }
+ while (len > 0 && buf[begin+len-1] == '\r') { len--; }
+ lineReaderStringBuffer.append(buf, begin, len);
+ break OUT;
+ }
+ lineReaderStringBuffer.append(buf, start, end-start);
+ start = end = 0;
+ }
+ if (!readsome) return null;
+ String ret = lineReaderStringBuffer.toString();
+ lineReaderStringBuffer.setLength(0);
+ return ret;
+ }
+
+ public void unbuffer(Writer writer) {
+ if (bufSize()<=0) return;
+ try {
+ writer.write(buf, start, end-start);
+ } catch (IOException e) {
+ Stream.ioe(e);
+ }
+ }
+}
public void println(String s) { print(s); print(newLine); }
public void flush() { if (out != null) out.flushWriter(); }
public int read(byte[] b, int off, int len) { flush(); return in.readBytes(b, off, len); }
- public int read(char[] c, int off, int len) { flush(); return in.read(c, off, len); }
- public void unread(String s) { in.unread(s); }
+ public int read(char[] c, int off, int len) { flush(); return in.readChars(c, off, len); }
public void close() { try { if (in!=null) in.close(); } finally { if (out!=null) out.close(); } }
public void setNewline(String s) { newLine = s; }
public void close() { try { super.close(); } catch (Exception e) { Log.error(this, e); } }
public void write(String s) { try { writer.write(s); } catch (IOException e) { ioe(e); } }
private void flushWriter() { try { writer.flush(); } catch (IOException e) { ioe(e); } }
+ private boolean flushing = false;
public void flush() {
- writer.flush();
- super.flush();
+ if (flushing) return;
+ try {
+ flushing = true;
+ try {
+ writer.flush();
+ } finally { flushing = false; }
+ super.flush();
+ } catch (IOException e) { ioe(e); }
}
}
private class In extends InputStream {
- public final Reader reader = new InputStreamReader(this);
- private final Writer unreader = new OutputStreamWriter(new UnReaderStream());
- private /*final*/ InputStream orig;
- public In(InputStream in) { orig = in; }
-
- char[] cbuf = new char[8192];
- int cstart = 0;
- int cend = 0;
-
- byte[] buf = new byte[8192];
- int start = 0;
- int end = 0;
-
- boolean flushing = false;
-
- public int available() { return flushing ? 0 : (end - start); }
- public void close() { try {
- if (orig!=null) orig.close();
- if (in_next != null) in_next.close();
- } catch (Exception e) { Log.error(this, e); } }
-
- public char getc(boolean peek) { try {
- if (cstart == cend) {
- cstart = 0;
- cend = reader.read(cbuf, 0, cbuf.length);
- if (cend == -1) {
- cend = cstart;
- if (in_next == null) throw new EOF();
- return getc(peek);
- }
- }
- return peek ? cbuf[cstart] : cbuf[cstart++];
- } catch (IOException e) { return (char)ioe(e); } }
-
- public String readln() { try {
- while(true) {
- for(int i=cstart; i<cend; i++)
- if (cbuf[i] == '\n') {
- // this should (in theory) handle CR, LF,
- // CRLF, and LFCR properly, assuming that the
- // file consistently uses the same ending
- // throughout.
- int begin = cstart;
- int len = i-cstart;
- cstart = i+1;
- if (cbuf[begin] == '\r') { begin++; len--; }
- while (len > 0 && cbuf[begin+len-1] == '\r') { len--; }
- return new String(cbuf, begin, len);
+ private ByteBufInputStream bbis;
+ private CharBufReader cbr;
+ public Reader reader;
+ private Writer unreader;
+
+ public char getc(boolean peek) { return cbr.getc(peek); }
+ public String readln() { return cbr.readln(); }
+ public int read() { return bbis.read(); }
+ public int read(byte[] b) { try { return bbis.read(b); } catch (IOException e) { ioe(e); return 0; } }
+ public int read(byte[] b, int off, int len) { return bbis.read(b, off, len); }
+ public void close() { try { cbr.close(); } catch (Exception e) { Log.error(this, e); } }
+ public int readBytes(byte[] b, int off, int len) { return bbis.read(b, off, len); }
+ public int readChars(char[] c, int off, int len) { return cbr.read(c, off, len); }
+
+ public In(InputStream in) {
+ bbis = new ByteBufInputStream(in) {
+ public void preread() {
+ try {
+ if (!cbr.ready()) return;
+ } catch (IOException e) { ioe(e); }
+ char[] c = new char[20];
+ while(true) {
+ try {
+ if (!cbr.ready()) break;
+ int numread = cbr.read(c, 0, c.length);
+ if (numread == -1) break;
+ unreader.write(c, 0, numread);
+ } catch (IOException e) { ioe(e); }
+ }
}
- ensurec(256);
- int numread = reader.read(cbuf, cend, cbuf.length - cend);
- if (numread == -1) {
- reader.close();
- if (cstart == cend) return null;
- String ret = new String(cbuf, cstart, cend-cstart);
- cstart = cend = 0;
- return ret;
- }
- cend += numread;
- }
- } catch (IOException e) { ioe(e); return null; } }
-
- public int read(char[] c, int pos, int len) { try {
- if (cstart == cend) {
- cstart = 0;
- cend = reader.read(cbuf, 0, cbuf.length);
- if (cend == -1) { reader.close(); cend = cstart; return -1; }
- }
- if (len > cend - cstart) len = cend - cstart;
- System.arraycopy(cbuf, cstart, c, pos, len);
- cstart += len;
- return len;
- } catch (IOException e) { ioe(e); return -1; } }
-
- public int readBytes(byte[] b, int pos, int len) { flushchars(); return read(b, pos, len); }
- public int read() { byte[] b = new byte[1]; if (read(b, 0, 1) == -1) return -1; return (int)b[0]; }
- public int read(byte[] b, int pos, int len) { try {
- if (start == end) {
- start = 0;
- end = orig.read(buf, 0, buf.length);
- if (end == -1) {
- orig.close();
- end = start;
- if (in_next==null) return -1;
- return in_next.read(b, pos, len);
- }
- }
- if (len > end - start) len = end - start;
- System.arraycopy(buf, start, b, pos, len);
- start += len;
- return len;
- } catch (IOException e) { ioe(e); return -1; } }
-
- private void growc(int s){char[] cbuf2=new char[cbuf.length+s*2];System.arraycopy(cbuf,0,cbuf2,0,cbuf.length);cbuf=cbuf2; }
- private void shiftc() {
- char[] cbuf2 = new char[cbuf.length];
- System.arraycopy(cbuf, cstart, cbuf2, 0, cend-cstart);
- cend -= cstart;
- cstart = 0;
- cbuf = cbuf2;
- }
- private void ensurec(int space) { if (cend-cstart+space>cbuf.length) growc(space); if (cend+space>cbuf.length) shiftc(); }
-
- private void growb(int s) { byte[] buf2 = new byte[buf.length+s*2]; System.arraycopy(buf,0,buf2,0,buf.length); buf=buf2; }
- private void shiftb() { System.arraycopy(buf, start, buf, 0, end-start); end -= start; start = 0; }
- private void ensureb(int space) { if (end-start+space>buf.length) growb(space); if (end+space>buf.length) shiftb(); }
- private void ensureb2(int space) { if (end-start+space>buf.length) growb(space); if (start<space) unshiftb(); }
- private void unshiftb() {
- System.arraycopy(buf,start,buf,buf.length-(end-start),end-start);start=buf.length-(end-start);end=buf.length; }
-
- public void unread(String s) { ensurec(s.length()); s.getChars(0, s.length(), cbuf, cend); cend += s.length(); }
-
- private void flushchars() {
- try {
- flushing = true;
- for(; reader.ready(); reader.read(cbuf, cend++, 1)) ensurec(10);
- if (cend>cstart)
- unreader.write(cbuf, cstart, cend-cstart);
- cstart = cend = 0;
- unreader.flush();
- } catch (IOException e) { ioe(e);
- } finally { flushing = false; }
+ };
+ unreader = new OutputStreamWriter(new UnReaderStream(bbis));
+ cbr = new CharBufReader(new InputStreamReader(bbis));
}
- private class UnReaderStream extends OutputStream {
- public void close() { }
- public void write(int i) throws IOException { byte[] b = new byte[1]; b[0] = (byte)i; write(b, 0, 1); }
- public void write(byte[] b) throws IOException { write(b, 0, b.length); }
- public void write(byte[] b, int p, int l) {
- ensureb2(l);
- System.arraycopy(b, p, buf, start-l, l);
- start -= l;
- }
- }
}
// Utilities: append() and transcribe() //////////////////////////////////////////////////////////////////////////////
public void transcribe(StringBuffer out) {
char[] buf = new char[1024];
while(true) {
- int numread = in.read(buf, 0, buf.length);
+ int numread = in.readChars(buf, 0, buf.length);
if (numread==-1) { in.close(); return; }
out.append(buf, 0, numread);
}
}
public static int countLines(Stream s) {
+ System.out.println("counting lines...");
int ret = 0;
while(s.readln() != null) ret++;
s.close();
projects / org.ibex.io.git / commitdiff