source: branches/0.22.x/abcl/src/org/armedbear/lisp/file_write_date.java

Last change on this file was 12422, checked in by Mark Evenson, 15 years ago

Extensively reworked new implementation for specifiying jar pathnames.

Pathname namestrings that have the form "jar:URL!/ENTRY" now construct
references to the ENTRY within a jar file that is located by URL. The
most common use is the "file:" form of URL
(e.g. 'jar:file:/home/me/foo.jar!/foo.lisp') although any valid syntax
accepted by the java.net.URL constructor should work (such as
'jar:http://abcl-dynamic-install.googlecode.com/files/baz.jar!/a/b/eek.lisp').

The internal structure of a jar pathname has changed. Previously a
pathname with a DEVICE that was itself a pathname referenced a jar.
This convention was not able to simultaneously represent bothjar
entries that were themselves jar files as occurs with packed FASLs
within JARs and devices which refer to drive letters under Windows.
Now, a pathname which refers to a jar has a DEVICE which is a proper
list of at most two entries. The first entry always references the
"outer jar", and the second entry (if it exists) references the "inner
jar". Casual users are encouraged not to manipulate the "internal
structure" of jar pathname by setting its DEVICE directly, but instead
rely on namestring <--> pathname conversions.

Jar pathnames are only currently valid for use with LOAD, TRUENAME,
PROBE-FILE and pathname translation related functions (such as
MERGE-PATHNAMES, TRANSLATE-PATHNAME, etc.) Passing one to OPEN
currently signals an error. Jar pathnames do not currently work
with DIRECTORY or PROBE-DIRECTORY.

Jar pathnames work for ASDF systems packaged within JARs. We override
ASDF:LOAD-OP to load ASDF from JAR Pathnames by bypassing compilation
if the output location would be in a JAR file. Interaction with
ASDF-BINARY-LOCATIONS is currently untested.

Pathname now used as the basis of ABCL's internal routines for loading
FASLs replacing the use of strings, which simplifies a lot of the
behavior in looking for things to LOAD.

Fixed nasty shared structure bug on MERGE-PATHNAMES by implementing
(and using) a copy constructor for Pathname.

Implemented SYS:PATHNAME-JAR-P predicate for jar pathnames.

Removed ZipCache? as it is no longer used now that we are using JVM's
implicit JAR caching.

WRITE-FILE-DATE works for jar pathnames, returning 0 for a
non-existent entry.

JAR-FILE tests now include loading FASLs from network location, which
means that these tests will fail if there is no network
connectivity. The tests initialization rewritten in Lisp, so it works
under Windows.

Allow of a top directory for creating hierarchially ZIPs with SYS:ZIP.
There is now a three argument version--PATHNAME PATHNAMES &OPTIONAL
TOPDIR--whereby all pathnames will be interpolated relative to topdir.

Implementation of SYS:UNZIP to unpack ZIP/JAR files.

JAR files always use '/' to name hierarchial entries. Pathname
translates '/' --> '\' under isPlatformWindows for all hierarchy
*except* reference to jar entries.

Pathname URL constructor under Windows to properly parses the
drive letter.

Ensure that *EXT:LISP-HOME* contains a directory.

Removed unused imports.

Converted Primitives to stack-trace friendly form where we touched the
source extensively anyways.

  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
File size: 2.2 KB
Line 
1/*
2 * file_write_date.java
3 *
4 * Copyright (C) 2003-2005 Peter Graves
5 * $Id: file_write_date.java 12422 2010-02-06 10:52:32Z mevenson $
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
20 *
21 * As a special exception, the copyright holders of this library give you
22 * permission to link this library with independent modules to produce an
23 * executable, regardless of the license terms of these independent
24 * modules, and to copy and distribute the resulting executable under
25 * terms of your choice, provided that you also meet, for each linked
26 * independent module, the terms and conditions of the license of that
27 * module.  An independent module is a module which is not derived from
28 * or based on this library.  If you modify this library, you may extend
29 * this exception to your version of the library, but you are not
30 * obligated to do so.  If you do not wish to do so, delete this
31 * exception statement from your version.
32 */
33
34package org.armedbear.lisp;
35
36import static org.armedbear.lisp.Lisp.*;
37
38import java.io.File;
39
40// ### file-write-date
41public final class file_write_date extends Primitive
42{
43    private file_write_date()
44    {
45        super("file-write-date");
46    }
47
48    @Override
49    public LispObject execute(LispObject arg)
50    {
51        Pathname pathname = coerceToPathname(arg);
52        if (pathname.isWild())
53            error(new FileError("Bad place for a wild pathname.", pathname));
54        long lastModified = pathname.getLastModified();
55        if (lastModified == 0)
56            return NIL;
57        return number(lastModified / 1000 + 2208988800L);
58    }
59
60    private static final Primitive FILE_WRITE_DATE = new file_write_date();
61}
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