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Common Lisp implementation running on the JVM
/*
* zip.java
*
* Copyright (C) 2005 Peter Graves
* $Id$
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* As a special exception, the copyright holders of this library give you
* permission to link this library with independent modules to produce an
* executable, regardless of the license terms of these independent
* modules, and to copy and distribute the resulting executable under
* terms of your choice, provided that you also meet, for each linked
* independent module, the terms and conditions of the license of that
* module. An independent module is a module which is not derived from
* or based on this library. If you modify this library, you may extend
* this exception to your version of the library, but you are not
* obligated to do so. If you do not wish to do so, delete this
* exception statement from your version.
*/
package org.armedbear.lisp;
import static org.armedbear.lisp.Lisp.*;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
@DocString(name="zip",
args="pathname pathnames &optional topdir",
doc="Creates a zip archive at PATHNAME whose entries enumerated via the list of PATHNAMES.\n"
+ "If the optional TOPDIR argument is specified, the archive will "
+ "preserve the hierarchy of PATHNAMES relative to TOPDIR. Without "
+ "TOPDIR, there will be no sub-directories in the archive, i.e. it will "
+ "be flat.")
public final class zip extends Primitive
{
private zip()
{
super("zip", PACKAGE_SYS, true);
}
@Override
public LispObject execute(LispObject first, LispObject second)
{
Pathname zipfilePathname = coerceToPathname(first);
if (second instanceof org.armedbear.lisp.protocol.Hashtable) {
return execute(zipfilePathname, (org.armedbear.lisp.protocol.Hashtable)second);
}
byte[] buffer = new byte[4096];
try {
String zipfileNamestring = zipfilePathname.getNamestring();
if (zipfileNamestring == null)
return error(new SimpleError("Pathname has no namestring: " +
zipfilePathname.princToString()));
ZipOutputStream out =
new ZipOutputStream(new FileOutputStream(zipfileNamestring));
LispObject list = second;
while (list != NIL) {
Pathname pathname = coerceToPathname(list.car());
String namestring = pathname.getNamestring();
if (namestring == null) {
// Clean up before signalling error.
out.close();
File zipfile = new File(zipfileNamestring);
zipfile.delete();
return error(new SimpleError("Pathname has no namestring: "
+ pathname.princToString()));
}
File file = new File(namestring);
makeEntry(out, file);
list = list.cdr();
}
out.close();
}
catch (IOException e) {
return error(new LispError(e.getMessage()));
}
return zipfilePathname;
}
@Override
public LispObject execute(LispObject first, LispObject second, LispObject third)
{
Pathname zipfilePathname = coerceToPathname(first);
try {
String zipfileNamestring = zipfilePathname.getNamestring();
if (zipfileNamestring == null)
return error(new SimpleError("Pathname has no namestring: " +
zipfilePathname.princToString()));
ZipOutputStream out =
new ZipOutputStream(new FileOutputStream(zipfileNamestring));
Pathname root = (Pathname) Pathname.truename(coerceToPathname(third));
String rootPath = root.getDirectoryNamestring();
int rootPathLength = rootPath.length();
Set directories = new HashSet();
LispObject list = second;
while (list != NIL) {
Pathname pathname = (Pathname) Pathname.truename(coerceToPathname(list.car()));
String namestring = pathname.getNamestring();
if (namestring == null) {
// Clean up before signalling error.
out.close();
File zipfile = new File(zipfileNamestring);
zipfile.delete();
return error(new SimpleError("Pathname has no namestring: " +
pathname.princToString()));
}
String directory = "";
String dir = pathname.getDirectoryNamestring();
if (dir.length() > rootPathLength) {
String d = dir.substring(rootPathLength);
int i = 0;
int j;
while ((j = d.indexOf(Pathname.separator, i)) != -1) {
i = j + 1;
directory = d.substring(0, j) + Pathname.separator;
if (!directories.contains(directory)) {
directories.add(directory);
ZipEntry entry = new ZipEntry(directory);
out.putNextEntry(entry);
out.closeEntry();
}
}
}
File file = new File(namestring);
if (file.isDirectory()) {
list = list.cdr();
continue;
}
makeEntry(out, file, directory + file.getName());
list = list.cdr();
}
out.close();
}
catch (IOException e) {
return error(new LispError(e.getMessage()));
}
return zipfilePathname;
}
static class Directories extends HashSet {
private Directories() {
super();
}
ZipOutputStream out;
public Directories(ZipOutputStream out) {
this.out = out;
}
public void ensure(String path)
throws IOException
{
int i = 0;
int j;
while ((j = path.indexOf(Pathname.separator, i)) != -1) {
i = j + 1;
final String directory = path.substring(0, j) + Pathname.separator;
if (!contains(directory)) {
add(directory);
ZipEntry entry = new ZipEntry(directory);
out.putNextEntry(entry);
out.closeEntry();
}
}
}
}
public LispObject execute(final Pathname zipfilePathname, final org.armedbear.lisp.protocol.Hashtable table) {
LispObject entriesObject = (LispObject)table.getEntries();
if (!(entriesObject instanceof Cons)) {
return NIL;
}
Cons entries = (Cons)entriesObject;
String zipfileNamestring = zipfilePathname.getNamestring();
if (zipfileNamestring == null)
return error(new SimpleError("Pathname has no namestring: " +
zipfilePathname.princToString()));
ZipOutputStream out = null;
try {
out = new ZipOutputStream(new FileOutputStream(zipfileNamestring));
} catch (FileNotFoundException e) {
return error(new FileError("Failed to create file for writing zip archive", zipfilePathname));
}
Directories directories = new Directories(out);
for (LispObject head = entries; head != NIL; head = head.cdr()) {
final LispObject key = head.car().car();
final LispObject value = head.car().cdr();
final Pathname source = Lisp.coerceToPathname(key);
final Pathname destination = Lisp.coerceToPathname(value);
final File file = source.getFile();
try {
String jarEntry = destination.getNamestring();
if (jarEntry.startsWith("/")) {
jarEntry = jarEntry.substring(1);
}
directories.ensure(jarEntry);
makeEntry(out, file, jarEntry);
} catch (FileNotFoundException e) {
return error(new FileError("Failed to read file for incoporation in zip archive.", source));
} catch (IOException e) {
return error(new FileError("Failed to add file to zip archive.", source));
}
}
try {
out.close();
} catch (IOException ex) {
return error(new FileError("Failed to close zip archive.", zipfilePathname));
}
return zipfilePathname;
}
private static final Primitive zip = new zip();
private void makeEntry(ZipOutputStream zip, File file)
throws FileNotFoundException, IOException
{
makeEntry(zip, file, file.getName());
}
private void makeEntry(ZipOutputStream zip, File file, String name)
throws FileNotFoundException, IOException
{
byte[] buffer = new byte[4096];
long lastModified = file.lastModified();
FileInputStream in = new FileInputStream(file);
ZipEntry entry = new ZipEntry(name);
if (lastModified > 0) {
entry.setTime(lastModified);
}
zip.putNextEntry(entry);
int n;
while ((n = in.read(buffer)) > 0)
zip.write(buffer, 0, n);
zip.closeEntry();
in.close();
}
}