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<head>
<title>NSArchiver class reference</title>
</head>
<body>
<font face="serif">
<a href="Base.html">Up</a>
<br />
<h1><a name="title$NSArchiver">NSArchiver class reference</a></h1>
<h3>Authors</h3>
<dl>
<dt>Andrew Kachites McCallum (<a href="mailto:mccallum@gnu.ai.mit.edu"><code>mccallum@gnu.ai.mit.edu</code></a>)</dt>
<dd>
</dd>
<dt>Richard Frith-Macdonald (<a href="mailto:rfm@gnu.org"><code>rfm@gnu.org</code></a>)</dt>
<dd>
</dd>
<dt>Richard Frith-Macdonald (<a href="mailto:richard@brainstorm.co.uk"><code>richard@brainstorm.co.uk</code></a>)</dt>
<dd>
</dd>
</dl>
<p><b>Copyright:</b> (C)
1995, 1996, 1997, 1998 Free Software Foundation, Inc.
</p>
<div>
<hr width="50%" align="left" />
<h3>Contents -</h3>
<ol>
<li>
<a href="#001000000000">Software documentation for the NSArchiver class</a>
</li>
<li>
<a href="#002000000000">Software documentation for the NSUnarchiver class</a>
</li>
<li>
<a href="#003000000000">Software documentation for the NSArchiver(GNUstep)
category</a>
</li>
<li>
<a href="#004000000000">Software documentation for the NSUnarchiver(GNUstep)
category</a>
</li>
</ol>
<hr width="50%" align="left" />
</div>
<h1><a name="001000000000">
Software documentation for the NSArchiver class
</a></h1>
<h2><a name="class$NSArchiver">NSArchiver</a> : <a rel="gsdoc" href="NSCoder.html#class$NSCoder">NSCoder</a></h2>
<blockquote class="declared">
<dl>
<dt><b>Declared in:</b></dt>
<dd>Foundation/NSArchiver.h</dd>
</dl>
</blockquote>
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
</p>
<p>
Implementation of
<a rel="gsdoc" href="NSCoder.html#class$NSCoder">NSCoder</a>
capable of creating sequential archives which
must be read in the same order they were written.
This class implements methods for saving to and
restoring from a serial archive (usually a file
on disk, but can be an
<a rel="gsdoc" href="NSData.html#class$NSData">NSData</a>
object) as well as methods that can be used by
objects that need to write/restore themselves.
</p>
<p>
</p>
<p>
Note, the sibling class
<a rel="gsdoc" href="NSKeyedArchiver.html#class$NSKeyedArchiver">NSKeyedArchiver</a>
supports a form of archive that is more robust to class changes, and is recommended over this one. </p>
<p>
</div>
<b>Method summary</b>
<ul>
<li><a rel="gsdoc" href="NSArchiver.html#method$NSArchiver(GNUstep)-directDataAccess">-directDataAccess</a></li>
<li><a rel="gsdoc" href="NSArchiver.html#method$NSArchiver(GNUstep)-resetArchiver">-resetArchiver</a></li>
<li><a rel="gsdoc" href="NSArchiver.html#method$NSArchiver(GNUstep)-serializeHeaderAt$version$classes$objects$pointers$">-serializeHeaderAt:version:classes:objects:pointers:</a></li>
<li><a rel="gsdoc" href="NSArchiver.html#method$NSArchiver+archiveRootObject$toFile$">+archiveRootObject:toFile:</a></li>
<li><a rel="gsdoc" href="NSArchiver.html#method$NSArchiver+archivedDataWithRootObject$">+archivedDataWithRootObject:</a></li>
<li><a rel="gsdoc" href="NSArchiver.html#method$NSArchiver-archiverData">-archiverData</a></li>
<li><a rel="gsdoc" href="NSArchiver.html#method$NSArchiver-classNameEncodedForTrueClassName$">-classNameEncodedForTrueClassName:</a></li>
<li><a rel="gsdoc" href="NSArchiver.html#method$NSArchiver-encodeClassName$intoClassName$">-encodeClassName:intoClassName:</a></li>
<li><a rel="gsdoc" href="NSArchiver.html#method$NSArchiver-initForWritingWithMutableData$">-initForWritingWithMutableData:</a></li>
<li><a rel="gsdoc" href="NSArchiver.html#method$NSArchiver-replaceObject$withObject$">-replaceObject:withObject:</a></li>
</ul>
<hr width="50%" align="left" />
<div class="method">
<h3><a name="method$NSArchiver+archiveRootObject$toFile$">archiveRootObject: toFile: </a></h3>
+ (BOOL) <b>archiveRootObject:</b> (id)rootObject<b> toFile:</b> (<a rel="gsdoc" href="NSString.html#class$NSString">NSString</a>*)path;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
Writes out serialized representation of object and,
recursively, any other objects it holds
references to.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSArchiver+archivedDataWithRootObject$">archivedDataWithRootObject: </a></h3>
+ (<a rel="gsdoc" href="NSData.html#class$NSData">NSData</a>*) <b>archivedDataWithRootObject:</b> (id)rootObject;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
Writes serialized representation of object and,
recursively, any other objects it holds
references to, to byte array.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSArchiver-archiverData">archiverData </a></h3>
- (<a rel="gsdoc" href="NSData.html#class$NSMutableData">NSMutableData</a>*) <b>archiverData</b>;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
Returns whatever data has been encoded thus far.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSArchiver-classNameEncodedForTrueClassName$">classNameEncodedForTrueClassName: </a></h3>
- (<a rel="gsdoc" href="NSString.html#class$NSString">NSString</a>*) <b>classNameEncodedForTrueClassName:</b> (<a rel="gsdoc" href="NSString.html#class$NSString">NSString</a>*)trueName;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
Returns substitute class used to encode objects of
given class. This would have been set through an
earlier call to [NSArchiver
-encodeClassName:intoClassName:].
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSArchiver-encodeClassName$intoClassName$">encodeClassName: intoClassName: </a></h3>
- (void) <b>encodeClassName:</b> (<a rel="gsdoc" href="NSString.html#class$NSString">NSString</a>*)trueName<b> intoClassName:</b> (<a rel="gsdoc" href="NSString.html#class$NSString">NSString</a>*)inArchiveName;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
Specify substitute class used in archiving objects
of given class. This class is written to the archive as
the class to use for restoring the object, instead of
what is returned from [NSObject -classForArchiver].
This can be used to provide backward compatibility
across class name changes. The object is still
encoded by calling <code>encodeWithCoder:</code> as
normal.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSArchiver-initForWritingWithMutableData$">initForWritingWithMutableData: </a></h3>
- (id) <b>initForWritingWithMutableData:</b> (<a rel="gsdoc" href="NSData.html#class$NSMutableData">NSMutableData</a>*)mdata;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
Init instance that will archive its data to
<var>mdata</var>. (Even if
[archiveRootObject:toFile:] is
called, this still gets written to.)
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSArchiver-replaceObject$withObject$">replaceObject: withObject: </a></h3>
- (void) <b>replaceObject:</b> (id)object<b> withObject:</b> (id)newObject;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Set encoder to write out <var>newObject</var> in place
of <var>object</var>.
</div>
<hr width="25%" align="left" />
</div>
<h1><a name="002000000000">
Software documentation for the NSUnarchiver class
</a></h1>
<h2><a name="class$NSUnarchiver">NSUnarchiver</a> : <a rel="gsdoc" href="NSCoder.html#class$NSCoder">NSCoder</a></h2>
<blockquote class="declared">
<dl>
<dt><b>Declared in:</b></dt>
<dd>Foundation/NSArchiver.h</dd>
</dl>
</blockquote>
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
</p>
<p>
This class reconstructs objects from an archive.
</p>
<p>
<br /> <strong>Re-using the archiver</strong>
</p>
<p>
The
<a rel="gsdoc" href="#method$NSUnarchiver(GNUstep)-resetUnarchiverWithData$atIndex$">
-resetUnarchiverWithData:atIndex:
</a>
method lets you re-use the archive to decode a new
data object or, in conjunction with the 'cursor'
method (which reports the current decoding position
in the archive), decode a second archive that exists in
the data object after the first one.
</p>
<p>
<strong>
Subclassing with different input format.
</strong>
<br /> <br /> <code>NSUnarchiver</code> normally reads
directly from an
<a rel="gsdoc" href="NSData.html#class$NSData">NSData</a>
object using the methods -
<dl>
<dt>
<a rel="gsdoc" href="NSData.html#method$NSData(GNUstepExtensions)-deserializeTypeTag$andCrossRef$atCursor$">-deserializeTypeTag:andCrossRef:atCursor:</a>
</dt>
<dd>
to decode type tags for data items, the tag is the
first byte of the character encoding string for
the data type (as provided by '@encode(xxx)'),
possibly with the top bit set to indicate that
what follows is a crossreference to an item
already encoded. <br /> Also decode a
crossreference number either to identify
the following item, or to refer to a previously
encoded item. Objects, Classes, Selectors,
CStrings and Pointer items have crossreference
encoding, other types do not. <br />
</dd>
<dt>
<a rel="gsdoc" href="NSData.html#method$NSData-deserializeDataAt$ofObjCType$atCursor$context$">[NSData -deserializeDataAt:ofObjCType:atCursor:context:]</a>
</dt>
<dd>
to decode all other information.
</dd>
</dl>
</p>
<p>
<code>NSUnarchiver</code> normally uses other
<a rel="gsdoc" href="NSData.html#class$NSData">NSData</a>
methods to read the archive header information
from within the method:
<a rel="gsdoc" href="#method$NSUnarchiver(GNUstep)-deserializeHeaderAt$version$classes$objects$pointers$">[-deserializeHeaderAt:version:classes:objects:pointers:]</a>
to read a fixed size header including archiver version (obtained by <code>[self systemVersion]</code>) and crossreference table sizes.
</p>
<p>
</p>
<p>
To subclass <code>NSUnarchiver</code>, you must
implement your own versions of the four
methods above, and override the
'directDataAccess' method to return
<code>NO</code> so that the archiver knows to
use your serialization methods rather than those in
the
<a rel="gsdoc" href="NSData.html#class$NSData">NSData</a>
object.
</p>
<p>
</div>
<b>Method summary</b>
<ul>
<li><a rel="gsdoc" href="NSArchiver.html#method$NSUnarchiver(GNUstep)-cursor">-cursor</a></li>
<li><a rel="gsdoc" href="NSArchiver.html#method$NSUnarchiver(GNUstep)-deserializeHeaderAt$version$classes$objects$pointers$">-deserializeHeaderAt:version:classes:objects:pointers:</a></li>
<li><a rel="gsdoc" href="NSArchiver.html#method$NSUnarchiver(GNUstep)-directDataAccess">-directDataAccess</a></li>
<li><a rel="gsdoc" href="NSArchiver.html#method$NSUnarchiver(GNUstep)-resetUnarchiverWithData$atIndex$">-resetUnarchiverWithData:atIndex:</a></li>
<li><a rel="gsdoc" href="NSArchiver.html#method$NSUnarchiver+classNameDecodedForArchiveClassName$">+classNameDecodedForArchiveClassName:</a></li>
<li><a rel="gsdoc" href="NSArchiver.html#method$NSUnarchiver+decodeClassName$asClassName$">+decodeClassName:asClassName:</a></li>
<li><a rel="gsdoc" href="NSArchiver.html#method$NSUnarchiver+unarchiveObjectWithData$">+unarchiveObjectWithData:</a></li>
<li><a rel="gsdoc" href="NSArchiver.html#method$NSUnarchiver+unarchiveObjectWithFile$">+unarchiveObjectWithFile:</a></li>
<li><a rel="gsdoc" href="NSArchiver.html#method$NSUnarchiver-classNameDecodedForArchiveClassName$">-classNameDecodedForArchiveClassName:</a></li>
<li><a rel="gsdoc" href="NSArchiver.html#method$NSUnarchiver-decodeClassName$asClassName$">-decodeClassName:asClassName:</a></li>
<li><a rel="gsdoc" href="NSArchiver.html#method$NSUnarchiver-initForReadingWithData$">-initForReadingWithData:</a></li>
<li><a rel="gsdoc" href="NSArchiver.html#method$NSUnarchiver-isAtEnd">-isAtEnd</a></li>
<li><a rel="gsdoc" href="NSArchiver.html#method$NSUnarchiver-objectZone">-objectZone</a></li>
<li><a rel="gsdoc" href="NSArchiver.html#method$NSUnarchiver-replaceObject$withObject$">-replaceObject:withObject:</a></li>
<li><a rel="gsdoc" href="NSArchiver.html#method$NSUnarchiver-setObjectZone$">-setObjectZone:</a></li>
<li><a rel="gsdoc" href="NSArchiver.html#method$NSUnarchiver-systemVersion">-systemVersion</a></li>
</ul>
<hr width="50%" align="left" />
<div class="method">
<h3><a name="method$NSUnarchiver+classNameDecodedForArchiveClassName$">classNameDecodedForArchiveClassName: </a></h3>
+ (<a rel="gsdoc" href="NSString.html#class$NSString">NSString</a>*) <b>classNameDecodedForArchiveClassName:</b> (<a rel="gsdoc" href="NSString.html#class$NSString">NSString</a>*)nameInArchive;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
Returns class name unarchivers will use to
instantiate encoded objects when they report
their class name as <var>nameInArchive</var>.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSUnarchiver+decodeClassName$asClassName$">decodeClassName: asClassName: </a></h3>
+ (void) <b>decodeClassName:</b> (<a rel="gsdoc" href="NSString.html#class$NSString">NSString</a>*)nameInArchive<b> asClassName:</b> (<a rel="gsdoc" href="NSString.html#class$NSString">NSString</a>*)trueName;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
Sets class name unarchivers will use to instantiate
encoded objects when they report their class name
as <var>nameInArchive</var>. This can be used to support
backwards compatibility across class name
changes.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSUnarchiver+unarchiveObjectWithData$">unarchiveObjectWithData: </a></h3>
+ (id) <b>unarchiveObjectWithData:</b> (<a rel="gsdoc" href="NSData.html#class$NSData">NSData</a>*)anObject;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
Creates an NSUnarchiver to read from
<var>anObject</var> and returns result of sending
[NSCoder -decodeObject] to it.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSUnarchiver+unarchiveObjectWithFile$">unarchiveObjectWithFile: </a></h3>
+ (id) <b>unarchiveObjectWithFile:</b> (<a rel="gsdoc" href="NSString.html#class$NSString">NSString</a>*)path;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
Creates an NSUnarchiver to read from
<var>path</var> and returns result of sending
[NSCoder -decodeObject] to it.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSUnarchiver-classNameDecodedForArchiveClassName$">classNameDecodedForArchiveClassName: </a></h3>
- (<a rel="gsdoc" href="NSString.html#class$NSString">NSString</a>*) <b>classNameDecodedForArchiveClassName:</b> (<a rel="gsdoc" href="NSString.html#class$NSString">NSString</a>*)nameInArchive;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
Returns class name this unarchiver uses to
instantiate encoded objects when they report
their class name as <var>nameInArchive</var>.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSUnarchiver-decodeClassName$asClassName$">decodeClassName: asClassName: </a></h3>
- (void) <b>decodeClassName:</b> (<a rel="gsdoc" href="NSString.html#class$NSString">NSString</a>*)nameInArchive<b> asClassName:</b> (<a rel="gsdoc" href="NSString.html#class$NSString">NSString</a>*)trueName;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
Set class name this unarchiver uses to instantiate
encoded objects when they report their class name
as <var>nameInArchive</var>. This can be used to provide
backward compatibility across class name changes.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSUnarchiver-initForReadingWithData$">initForReadingWithData: </a></h3>
- (id) <b>initForReadingWithData:</b> (<a rel="gsdoc" href="NSData.html#class$NSData">NSData</a>*)anObject;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
Set up to read objects from data buffer
<var>anObject</var>.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSUnarchiver-isAtEnd">isAtEnd </a></h3>
- (BOOL) <b>isAtEnd</b>;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
Returns whether have currently read through all of
data buffer or file this unarchiver was initialized
with.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSUnarchiver-objectZone">objectZone </a></h3>
- (<a rel="gsdoc" href="TypesAndConstants.html#type$NSZone">NSZone</a>*) <b>objectZone</b>;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
Returns zone unarchived objects will be allocated
from.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSUnarchiver-replaceObject$withObject$">replaceObject: withObject: </a></h3>
- (void) <b>replaceObject:</b> (id)anObject<b> withObject:</b> (id)replacement;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.0.0</div>
<br />
<div class="desc">
Set unarchiver to replace <var>anObject</var> with
<var>replacement</var> whenever it is found decoded
from the archive.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSUnarchiver-setObjectZone$">setObjectZone: </a></h3>
- (void) <b>setObjectZone:</b> (<a rel="gsdoc" href="TypesAndConstants.html#type$NSZone">NSZone</a>*)aZone;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
Sets zone unarchived objects will be allocated from.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSUnarchiver-systemVersion">systemVersion </a></h3>
- (unsigned int) <b>systemVersion</b>;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
Returns system version archive was encoded by.
</div>
<hr width="25%" align="left" />
</div>
<h1><a name="003000000000">
Software documentation for the NSArchiver(GNUstep)
category
</a></h1>
<h2><a rel="gsdoc" href="#class$NSArchiver">NSArchiver</a>(<a name="category$NSArchiver(GNUstep)">GNUstep</a>)</h2>
<blockquote class="declared">
<dl>
<dt><b>Declared in:</b></dt>
<dd>Foundation/NSArchiver.h</dd>
</dl>
</blockquote>
<div class="availability">
<b>Availability:</b> OpenStep, Base Likely to be changed/moved/removed at 1.17.0</div>
<br />
<div class="desc">
Category for compatibility with old GNUstep
encoding.
</div>
<b>Method summary</b>
<ul>
<li><a rel="gsdoc" href="NSArchiver.html#method$NSArchiver(GNUstep)-directDataAccess">-directDataAccess</a></li>
<li><a rel="gsdoc" href="NSArchiver.html#method$NSArchiver(GNUstep)-resetArchiver">-resetArchiver</a></li>
<li><a rel="gsdoc" href="NSArchiver.html#method$NSArchiver(GNUstep)-serializeHeaderAt$version$classes$objects$pointers$">-serializeHeaderAt:version:classes:objects:pointers:</a></li>
</ul>
<hr width="50%" align="left" />
<div class="method">
<h3><a name="method$NSArchiver(GNUstep)-directDataAccess">directDataAccess </a></h3>
- (BOOL) <b>directDataAccess</b>;<br />
<div class="availability">
<b>Availability:</b> OpenStep, Base Likely to be changed/moved/removed at 1.17.0</div>
<br />
<div class="desc">
Returns <code>YES</code>.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSArchiver(GNUstep)-resetArchiver">resetArchiver </a></h3>
- (void) <b>resetArchiver</b>;<br />
<div class="availability">
<b>Availability:</b> OpenStep, Base Likely to be changed/moved/removed at 1.17.0</div>
<br />
<div class="desc">
Allow reuse of archiver (clears class substitution
maps, etc.) but do not clear out current serialized
data.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSArchiver(GNUstep)-serializeHeaderAt$version$classes$objects$pointers$">serializeHeaderAt: version: classes: objects: pointers: </a></h3>
- (void) <b>serializeHeaderAt:</b> (unsigned)positionInData<b> version:</b> (unsigned)systemVersion<b> classes:</b> (unsigned)classCount<b> objects:</b> (unsigned)objectCount<b> pointers:</b> (unsigned)pointerCount;<br />
<div class="availability">
<b>Availability:</b> OpenStep, Base Likely to be changed/moved/removed at 1.17.0</div>
<br />
<div class="desc">
Writes out header for GNUstep archive format.
</div>
<hr width="25%" align="left" />
</div>
<h1><a name="004000000000">
Software documentation for the NSUnarchiver(GNUstep)
category
</a></h1>
<h2><a rel="gsdoc" href="#class$NSUnarchiver">NSUnarchiver</a>(<a name="category$NSUnarchiver(GNUstep)">GNUstep</a>)</h2>
<blockquote class="declared">
<dl>
<dt><b>Declared in:</b></dt>
<dd>Foundation/NSArchiver.h</dd>
</dl>
</blockquote>
<div class="availability">
<b>Availability:</b> Not in OpenStep/MacOS-X, Base 0.0.1</div>
<br />
<div class="desc">
Category for compatibility with old GNUstep
encoding.
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<b>Method summary</b>
<ul>
<li><a rel="gsdoc" href="NSArchiver.html#method$NSUnarchiver(GNUstep)-cursor">-cursor</a></li>
<li><a rel="gsdoc" href="NSArchiver.html#method$NSUnarchiver(GNUstep)-deserializeHeaderAt$version$classes$objects$pointers$">-deserializeHeaderAt:version:classes:objects:pointers:</a></li>
<li><a rel="gsdoc" href="NSArchiver.html#method$NSUnarchiver(GNUstep)-directDataAccess">-directDataAccess</a></li>
<li><a rel="gsdoc" href="NSArchiver.html#method$NSUnarchiver(GNUstep)-resetUnarchiverWithData$atIndex$">-resetUnarchiverWithData:atIndex:</a></li>
</ul>
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<div class="method">
<h3><a name="method$NSUnarchiver(GNUstep)-cursor">cursor </a></h3>
- (unsigned) <b>cursor</b>;<br />
<div class="availability">
<b>Availability:</b> Not in OpenStep/MacOS-X, Base 0.0.1</div>
<br />
<div class="desc">
Return current position within archive byte array.
</div>
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<div class="method">
<h3><a name="method$NSUnarchiver(GNUstep)-deserializeHeaderAt$version$classes$objects$pointers$">deserializeHeaderAt: version: classes: objects: pointers: </a></h3>
- (void) <b>deserializeHeaderAt:</b> (unsigned*)pos<b> version:</b> (unsigned*)v<b> classes:</b> (unsigned*)c<b> objects:</b> (unsigned*)o<b> pointers:</b> (unsigned*)p;<br />
<div class="availability">
<b>Availability:</b> Not in OpenStep/MacOS-X, Base 0.0.1</div>
<br />
<div class="desc">
Reads in header for GNUstep archive format.
</div>
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</div>
<div class="method">
<h3><a name="method$NSUnarchiver(GNUstep)-directDataAccess">directDataAccess </a></h3>
- (BOOL) <b>directDataAccess</b>;<br />
<div class="availability">
<b>Availability:</b> Not in OpenStep/MacOS-X, Base 0.0.1</div>
<br />
<div class="desc">
Returns <code>YES</code>.
</div>
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</div>
<div class="method">
<h3><a name="method$NSUnarchiver(GNUstep)-resetUnarchiverWithData$atIndex$">resetUnarchiverWithData: atIndex: </a></h3>
- (void) <b>resetUnarchiverWithData:</b> (<a rel="gsdoc" href="NSData.html#class$NSData">NSData</a>*)anObject<b> atIndex:</b> (unsigned)pos;<br />
<div class="availability">
<b>Availability:</b> Not in OpenStep/MacOS-X, Base 0.0.1</div>
<br />
<div class="desc">
Prepare for reuse of the unarchiver to unpack a new
archive, specified in <var>anObject</var>,
starting at <var>pos</var>. Reads archive header.
</div>
<hr width="25%" align="left" />
</div>
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