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/*
* basE91 command line front-end
*
* Copyright (c) 2000-2006 Joachim Henke
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* - Neither the name of Joachim Henke nor the names of his contributors may
* be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
import java.io.*;
public class b91cli
{
private static void encode(InputStream is, OutputStream os)
{
int s;
byte[] ibuf = new byte[53248];
byte[] obuf = new byte[65536];
basE91 b91 = new basE91();
try {
while ((s = is.read(ibuf)) > 0) {
s = b91.encode(ibuf, s, obuf);
os.write(obuf, 0, s);
}
s = b91.encEnd(obuf);
os.write(obuf, 0, s);
} catch (Exception e) {
System.err.println(e);
}
}
private static void encodeWrap(InputStream is, OutputStream os)
{
int i, s;
int n = 0;
byte[] ibuf = new byte[53248];
byte[] obuf = new byte[65536];
char[] line = new char[76];
basE91 b91 = new basE91();
try {
PrintStream ps = new PrintStream(os, false, "US-ASCII");
while ((s = is.read(ibuf)) > 0) {
s = b91.encode(ibuf, s, obuf);
for (i = 0; i < s; ++i) {
line[n++] = (char) obuf[i];
if (n == 76) {
ps.println(line);
n = 0;
}
}
}
s = b91.encEnd(obuf);
for (i = 0; i < s; ++i) {
line[n++] = (char) obuf[i];
if (n == 76) {
ps.println(line);
n = 0;
}
}
if (n > 0)
ps.println(new String(line, 0, n));
} catch (Exception e) {
System.err.println(e);
}
}
private static void decode(InputStream is, OutputStream os)
{
int s;
byte[] ibuf = new byte[65536];
byte[] obuf = new byte[57344];
basE91 b91 = new basE91();
try {
while ((s = is.read(ibuf)) > 0) {
s = b91.decode(ibuf, s, obuf);
os.write(obuf, 0, s);
}
s = b91.decEnd(obuf);
os.write(obuf, 0, s);
} catch (Exception e) {
System.err.println(e);
}
}
private static void errExit(String msg)
{
System.err.println("syntax error - " + msg + "\nTry `-h' option for more information.");
System.exit(3);
}
public static void main(String[] args)
{
int i;
boolean enc = true;
boolean lbr = true;
String ifn = null;
String ofn = null;
for (i = 0; i < args.length; ++i)
if (args[i].length() == 2 && args[i].charAt(0) == '-')
switch (args[i].charAt(1)) {
case 'd':
enc = false;
break;
case 'u':
lbr = false;
break;
case 'h':
System.out.println("Usage: base91 [OPTION] infile [outfile]\n\n -d\tdecode a basE91 encoded file\n -u\tleave encoder output unformatted (disable line wrapping)\n -h\tdisplay this help and exit\n -V\toutput version information and exit");
return;
case 'V':
System.out.println("base91 0.6.0\nCopyright (c) 2000-2006 Joachim Henke");
return;
default:
errExit("invalid option: " + args[i]);
}
else if (ifn == null)
ifn = args[i];
else if (ofn == null)
ofn = args[i];
else
errExit("too many arguments: " + args[i]);
if (ifn == null)
errExit("file name missing");
if (ofn == null)
if (enc)
ofn = ifn + (lbr ? "_b91.txt" : ".b91");
else {
String lifn = ifn.toLowerCase();
if (ifn.length() > 4 && lifn.endsWith(".b91"))
ofn = ifn.substring(0, ifn.length() - 4);
else if (ifn.length() > 8 && lifn.endsWith("_b91.txt"))
ofn = ifn.substring(0, ifn.length() - 8);
else
ofn = ifn + ".bin";
}
try {
FileInputStream ifs = new FileInputStream(ifn);
FileOutputStream ofs = new FileOutputStream(ofn);
if (enc)
if (lbr)
encodeWrap(ifs, ofs);
else
encode(ifs, ofs);
else
decode(ifs, ofs);
ifs.close();
ofs.close();
} catch (Exception e) {
System.err.println(e);
}
}
}
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