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<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" lang="en" xml:lang="en">
<head>
  <title>Raptor RDF Syntax Library - Release Notes</title>
</head>
<body>

<h1 style="text-align:center">Raptor RDF Syntax Library - Release Notes</h1>


<h2 id="rel2_0_4"><a name="rel2_0_4">Raptor2 2.0.4 changes</a></h2>

<p>Not yet released.
</p>


<h2 id="rel2_0_3"><a name="rel2_0_3">Raptor2 2.0.3 changes</a></h2>

<p>The main change is to add the new main header file
<code>raptor2.h</code>.  The new header has been added to allow
applications to be sure they have got the raptor V2 header
(with <code>#include &lt;raptor2.h&gt;</code> and not the raptor V1
header file (<code>#include &lt;raptor.h&gt;</code>).
The <code>raptor.h</code> header will NOT be removed until the next
major raptor release (V3).
</p>


<h3>Turtle / TRiG parser changes</h3>

<p>Alter the parser to not use a large token stack when parsing TRiG
graphs, enabling the parser to handle much larger files.  The parser
still gathers all input into a single memory segment so the maximum
amount of input is probably memory size/3.
</p>

<p>TRiG parser now allows a QName for the graph name.
</p>

<p>Attempted to make the parser handle streaming lexing and parsing
but only partially successful; bison could be made to stream parse
but flex could not be made to stream lex.  This meant it could not
be convinced to return a "need more input" response at the end of a
chunk of data and continue lexing later.
</p>

<p>Fix value ownership fix graph name.
Fixes <a href="http://bugs.librdf.org/mantis/view.php?id=437">Issue#0000437</a>
</p>

<h3>Other Changes</h3>

<p>Raptor was ran through the
LLVM <a href="http://clang-analyzer.llvm.org/">clang</a> static code
analyzer and several issues fixed, mostly in unused variables and in
unlikely error recovery conditions.  Some actual potential crash bugs
were found:</p>
<ol>
  <li>The workaround for
    ancient <a href="http://xmlsoft.org/">libxml2</a> error handling
    in <code>raptor_libxml_xmlStructuredError_handler_parsing()</code>
    was broken for some time, so that probably means nobody uses old
    libxml2.</li>
  <li><a href="http://github.com/msporny/librdfa/">librdfa</a> URI
    resolving in <code>rdfa_resolve_uri()</code> used unallocated
    memory in some relative URI cases.</li>
</ol>

<p>Bison 2.4 is required to build Raptor from GIT source with
no pregenerated files.
</p>



<h2 id="rel2_0_2"><a name="rel2_0_2">Raptor2 2.0.2 changes</a></h2>

<p>Fixed a too strict version checking bug in <code>raptor_new_world()</code>
</p>


<h2 id="rel2_0_1"><a name="rel2_0_1">Raptor 2.0.1 Changes</a></h2>

<p><b>DO NOT USE</b>.  Use 2.0.2 which fixes a too strict version
checking bug in <code>raptor_new_world()</code>
</p>

<h3>Parser class changes</h3>

<p>The internal librdfa parser that uses Raptor internals now exports
symbols prefixed with raptor_librdfa so that Raptor can be linked
with the standard librdfa in applications without symbol clashes.
Fixes <a href="http://bugs.librdf.org/mantis/view.php?id=416">Issue #0000416</a>
</p>

<h3>Serializer class changes</h3>

<p>The N-Quads serializer was fixed to output the graph name in the
fourth column, instead of repeating the object.
</p>

<h3>Internal changes</h3>

<p>Replaced all internal fatal errors that went to
an <code>abort()</code> with regular logged error.
</p>


<h2 id="rel2_0_0"><a name="rel2_0_0">Raptor 2.0.0 Changes</a></h2>

<p>Raptor V2 final release.  See the release notes for 1.9.0 and
1.9.1 for the major changes in Raptor V2.</p>

<h3>API changes since 1.9.1 beta</h3>

<p>Added <code>raptor_syntax_description_validate()</code> to public
API to validate and compute counts for syntax descriptions.
Primarily this is for use by Rasqal.
</p>

<p>The <code>raptor_syntax_description</code> now has an array of URI
strings instead of a single one, to allow URI aliasing.  This is
primarily for use by Rasqal.</p>

<p>Fixed guessing by URI in
<code>raptor_world_guess_parser_name()</code> which was not
working.</p>

<p>Fixed Issues:</p>
<ul>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=405">0000405</a>: RDFa parser does not handle base href with single quoted value</li>
</ul>


<h2 id="rel1_9_1"><a name="rel1_9_1">Raptor 1.9.1 Changes</a></h2>

<p>1.9.1 is the second beta release of Raptor 2 and intended to be
the last release before 2.0.0.
</p>

<h3>Raptor V1 to V2 upgrading changes</h3>

<p>Improved the <code>upgrade-script.pl</code> raptor V1 to V2
upgrade script to handle changes to enums and macros as well as
handle statement field renaming.  Updated the generated documentation
to also include enum and macro changes.
</p>

<p>Added defensive code in each constructor to check the passed-in
raptor world object is a valid Raptor V2 world rather than V1.  It
generates a warning once per run of the program.
</p>

<p>The <code>raptor_new_world()</code> function is now a macro that
calls an internal function <code>raptor_check_world_internal()</code>
with a version macro argument to detect when Raptor V2 is invoked with
an inconsistent header and library.
</p>


<h3>AVLTree class changes</h3>

<p>Free the iterator at the end of debug method
<code>raptor_avltree_print()</code>.
</p>


<h3>I/O Stream class changes</h3>

<p>Fix major copying too much error in the internal
<code>raptor_read_string_iostream_read_bytes()</code> memcpy that
could cause crashes - the function always copied the maximum amount
the user requested in the read method even if the string was
smaller.</p>


<h3>Parser class changes</h3>
<p>JSON parser: Made relative URIs option work.
</p>

<p>N-Quads parser: Added.  The serializer already existed.</p>

<p>librdfa parser: Updated to latest librdfa GIT 
1a1a08c790b7649a7f6c12fb9e40c0d3dbe70481</p>


<h3>Serializer class changes</h3>

<p>Fix <code>raptor_serializer_start_to_iostream()</code> to prevent
crash when this method is used more than once on the same
serializer.</p>

<p>RSS/Atom serializer: Fix crashes with feeds containing entries
with blank node items.
</p>


<h3>Stringbuffer class changes</h3>

<p>Added utility methods
<code>raptor_stringbuffer_append_uri_escaped_counted_string()</code>
and <code>raptor_stringbuffer_append_hexadecimal()</code>.
</p>


<h3>Term class changes</h3>

<p>Deleted <code>raptor_term_as_counted_string()</code> and
<code>raptor_term_as_string()</code>.  Since 1.9.0 was an unstable
API, this is allowed.
</p>

<p>Added <code>raptor_term_to_counted_string()</code> replacing
deleted <code>raptor_term_as_counted_string()</code>.</p>

<p>Added <code>raptor_term_to_string()</code> replacing
deleted <code>raptor_term_as_string()</code>.</p>



<h3>URI class changes</h3>

<p>Added convenience methods for constructing URI terms from strings:
<code>raptor_new_term_from_counted_uri_string()</code> and 
<code>raptor_new_term_from_uri_string()</code>.
</p>

<p>Use string lengths in equals and comparisons for faster checking.
Use <code>memcmp()</code> instead of <code>strncmp()</code> when
lengths are known and the same.
</p>


<h3>WWW class changes</h3>

<p>The CURL WWW module now looks for and uses the HTTP response
<code>Content-Location:</code> header to get the base URI for content
retrievals.  This allows these base URIs to be used in parsing
content retrived from URIs.
Fixes <a href="http://bugs.librdf.org/mantis/view.php?id=402">Issue#0000402</a>
</p>


<h2 id="rel1_9_0"><a name="rel1_9_0">Raptor 1.9.0 Changes</a></h2>

<p>1.9.0 is the first beta release of Raptor 2.  There may be changes
and additional releases before version 2.0.0 with the final stable API.
</p>

<p>This is a major update and cleanup to the Raptor API and ABI with
additions, removals and changes. There are also major restructurings
of the internal code and cleanups.  There are also some new features
in the form of additional APIs, new serializers and parsers.
</p>

<p>The details of the additions, removals and changes of functions,
structures, typedefs and enums are listed in the
<a href="http://librdf.org/raptor/api/">Raptor 2 API reference manual</a>
section on
<a href="http://librdf.org/raptor/api/raptor-changes.html">Changes between raptor 1.4.21 and 1.9.0</a>.
The <a href="UPGRADING.html">upgrading document</a>
explains how to upgrade existing code that uses the V1 APIs to use
the new APIs.
</p>

<p>The major changes in this release are:</p>
<ul>
<li>Removed all deprecated functions and typedefs.</li>
<li>Renamed all functions to the standard <code>raptor_</code><em>class</em><code>_</code><em>method</em> form.</li>
<li>All constructors take a <code>raptor_world</code> argument.</li>
<li>URIs are interned and there is no longer a swappable implementation.</li>
<li>Statement is now an array of 3-4 RDF Terms to support triples and quads.</li>
<li>World object owns logging, blank node ID generation and describing syntaxes.</li>
<li>Features are now called options and have typed values.</li>
<li>GRDDL parser now saves and restores shared libxslt state.</li>
<li>Added serializers for HTML 'html' and N-Quads 'nquads'.</li>
<li>Added parser 'json' for JSON-Resource centric and JSON-Triples.</li>
<li>Switched to GIT version control <a href="http://github.com/dajobe/raptor">hosted by GitHub</a>.</li>
<li>Added memory-based AVL-Tree to the public API.</li>
</ul>


<p>Fixed Issues:</p>
<ul>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=357">0000357</a>: raptor_term_as_string does not return N-Triples escaped string, although API says so</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=361">0000361</a>: HTML Table serializer</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=369">0000369</a>: Unescaped quotes in long literals (Turtle/N3) cause parser failure if at the end of the literal</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=370">0000370</a>: Odd behaviour regarding the parsing of Trig files</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=373">0000373</a>: Remove deprecated GTK symbols</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=379">0000379</a>: raptor libxslt security policy conflicts with apps that also use libxslt and set security policy</li>
</ul>


<!-- updated to 2010-08-15 ChangeLog changes -->

<h3>General changes</h3>

<p>Renamed the library name and package tarball name to a new
separate names (libraptor2, raptor2-X.tar.gz) so they can be
distinguished and installed into the same system as raptor 1 without
file clashes.  Note: This does not apply to the
<code>rapper(1)</code> utility and it's manual page which are in both
packages.  Packagers should stop packaging the <code>rapper(1)</code>
binary and the rapper manual page from raptor 1, in preference to the
raptor 2 version.
</p>

<p>Nicholas J Humfrey is a new committer.
</p>

<p>A utility script <code>docs/upgrade-script.pl</code> is
automatically generated from the changes data to aid migrating from
Raptor 1 to Raptor 2 APIs.  If it is not a simple rename, the script
annotates the change as a comment near the code.
</p>

<p>Raptor's Statement, Term and URI classes can fully replace
librdf's <code>librdf_statement</code>, <code>librdf_node</code> and
<code>librdf_uri</code> classes.  This has been tested with GIT
versions when both Rasqal and librdf are configured with
<code>--with-raptor2</code>.  When raptor 2 is stable, Rasqal and
librdf will default to use these..
</p>


<h3>Documentation changes</h3>

<p>The API reference manual now includes an automatically generated
reference section on the
<a href="http://librdf.org/raptor/api/raptor-formats.html">functions and types that were added, removed and changed between raptor 1 and raptor 2 APIs</a>.

It also includes an automatically generated section on the
<a href="http://librdf.org/raptor/api/raptor-formats.html">parser and serializers with their names, mime types and Q values.</a>
</p>

<p>The tutorial examples were updated to the Raptor 2 APIs.
</p>

<p>NOTE: At this time, the descriptive parts of the tutorial have NOT
been updated to use the Raptor 2 API.
</p>


<h3>World class changes</h3>

<p>A log handler function for receiving warnings and errors (fatal or
other) are now all sent to a single log handler of type
<code>raptor_log_handler</code> registered to the world class with
<code>raptor_world_set_log_handler()</code>, rather than handlers set
for each parser, sax2, serializer or www instance.  Several
constructors lose error handler and error data parameters
consequently.
</p>

<p>The enumerating approach for listing the known parsers and
serializers and writing into variables passed in, was replaced with
methods that return pointers to static
<code>raptor_syntax_description</code> objects to allow more
parameters to be returned.  This allowed the removal of multiple
older calls that kept having to gain new return arguments.
The description also returns a list of (mime type, qname) pairs
using a new typedef <code>raptor_type_q</code>.  It includes a set
of bitflags for some simple information such as
<code>RAPTOR_SYNTAX_NEED_BASE_URI</code> to describe when
a syntax requires a base URI passed in, otherwise is not needed
or optional.
</p>

<p><code>raptor_world_set_libxml_flags()</code> is replaced with
<code>raptor_world_set_flag()</code> which are simple flags that
require no initialisation of the world since they are used before it
is opened.  This means that it cannot use the Options module for
world flags.  New flag
<code>RAPTOR_WORLD_FLAGS_URI_INTERNING</code> allows disabling of
the URI interning using an AVL-Tree which can use up memory.
</p>

<p><code>raptor_world_set_libxslt_security_preferences()</code> and
<code>raptor_world_set_log_handler()</code> gains an int return value
to report failure if world is already opened.
</p>

<p>Moved the generation of blank node IDs from the parsers (many
objects) to the world class (1 object).  Cannot think of good reasons
why the blank node ID generation policy needs to be different
per-parser. Enumeration <code>raptor_genid_type</code> was deleted
since only the blank node type was ever used.
</p>


<h3>AVL Tree changes</h3>

<p>The internal memory-based AVL Tree implementation is exposed as a
public API.
</p>


<h3>Features changes</h3>

<p>Replaced with <code>raptor_options</code></p>


<h3>Identifier class changes</h3>

<p>Replaced with Term class.
</p>

<p><code>raptor_identifier_type</code> enum was removed and replaced
with enum <code>raptor_term_type</code> and a smaller set of 3
possible term types.  The enum values match the int values used
in <code>librdf_node_type</code>.
</p>


<h3>I/O Stream class changes</h3>

<p>Constructors all gain a world argument.
</p>

<p>Some methods now return an int error status such as
<code>raptor_iostream_write_end()</code>
</p>

<p>Many classes iostream writing methods and methods of the iostream
class itself were changed to follow the standard
<code>raptor_</code><em>CLASS</em><code>_write</code> naming
convention and to put the iostream argument at the end.
</p>
 
<p>Deprecated typedef <code>raptor_iostream_handler</code> was removed</p>

<p>Deprecated functions were removed:
<code>raptor_new_iostream_from_handler()</code>,
<code>raptor_iostream_get_bytes_written_count()</code> and
<code>raptor_iostream_write_string_turtle()</code>
</p>


<h3>Locator changes</h3>

<p>Renamed some methods to follow the
<code>raptor_locator_</code><em>method</em> standard.
</p>


<h3>Namespaces and namespace stack classes changes</h3>

<p>Constructors all gain a world argument and lose error handler,
error data arguments.
</p>


<h3>Options</h3>

<p>A new name for what were called features in Raptor 1 and this was
expanded to allow use of values types string, integer and boolean.
Options can be set on multiple classes such as parser, serializer but
are centrally described using the new
<code>raptor_option_description</code> structure.
</p>

<p>The option get / set operations were reduced from multiple methods
per class for getting / setting an int, int / string to just one get
and one set, with optional parameters.  It can also handle adding new
types later, which will be passed in as strings and converted
internally.
</p>

<p>The options code
introduces a new enum <code>raptor_domain</code> which essentially is
for describing a class such as parser.  
For example options listed
for domain <code>RAPTOR_DOMAIN_PARSER</code> will be usable with the
parser option get and set methods
<code>raptor_parser_get_option(parser, ...)</code> and
<code>raptor_parser_set_option(parser, ...)</code>.
</p>


<h3>Parser class changes</h3>

<p><code>raptor_parser_set_strict()</code> was removed and replaced
with a new parser option <code>RAPTOR_OPTION_STRICT</code>.
</p>

<p>Parser object methods to return information about the parser class
were removed since they can be done instead via fields of the static
object returned from
<code>raptor_world_get_parser_description()</code>.  Deleted
functions include <code>raptor_parser_get_label()</code>,
<code>raptor_parser_get_mime_type()</code>, and
<code>raptor_parser_get_need_base_uri()</code>.
</p>

<p>Parsing may generate start graph and end graph events for syntaxes
that return graph names such as TRiG.  These are returned by the handler
of typedef <code>raptor_graph_mark_handler</code>
set by new function <code>raptor_parser_set_graph_mark_handler()</code>
which returns a start or end event of type enum
<code>raptor_graph_mark_flags</code>.
</p>

<p><code>raptor_parser_get_accept_header()</code> fixed length of
static string to ensure NUL is copied.
</p>

<p>Many functions were renamed to match the
<code>raptor_parser_</code><em>method</em> naming standard.  Some of
these get a long longer, but are at least consistent.  For example
<code>raptor_parse_uri()</code> becomes
<code>raptor_parser_parse_uri()</code>.
</p>

<p>Deprecated typedef <code>raptor_ntriples_parser</code> was removed.
</p>

<p>Deprecated functions were removed:
<code>raptor_ntriples_term_as_string()</code>, and
<code>raptor_ntriples_string_as_utf8_string()</code>
</p>

<p>The librdfa parser was updated with the latest updates to the RDFa
syntax (first, rel/rev, whitespace, xml:lang) and fixes issues with
non-terminated strings.
</p>


<p>The GRDDL parser now saves and restores the libxslt global state
(handlers, security preferences) so that it does not affect other
applications in the same memory space.  Part of this can be
overridden with
<code>raptor_world_set_libxslt_security_preferences()</code> which
allows user code to disable raptor touching the security preferences
entirely.
Fixes
<a href="http://bugs.librdf.org/mantis/view.php?id=379">Issue #0000379</a>
</p>


<p>The RDF/XML parser never generated special names for bag IDs
(bagidNNN), so all support for that has been removed.
</p>

<p>The RDF/XML parser uses the new reference-counted URIs and raptor
terms to prevent a lot of malloc/free for temporary uses.
</p>

<p>Removed RDF/XML parser feature
<code>RAPTOR_FEATURE_ASSUME_IS_RDF</code> since it did nothing since
at least 2003, maybe earlier.
</p>

<p>Added a JSON parser (name 'json') that can read both the
resource-centric and triples JSON RDF formats.  Requires the YAJL
JSON parser library.  Contributed by Nicholas J Humfrey.
</p>

<p>Moved the generation of blank node IDs from the parsers (many
objects) to the world class (1 object).  Cannot think of good reasons
why the blank node ID generation policy needs to be different
per-parser.
</p>


<h3>QName class changes</h3>

<p>Constructors all gain a world argument and lose error handler,
error data arguments.
</p>


<h3>Sequence changes</h3>

<p>Use new generic <code>raptor_data_free_handler</code>,
<code>raptor_data_print_handler</code>,
<code>raptor_data_context_free_handler</code>,
<code>raptor_data_context_print_handler</code>
data-focused handlers which are shared with the AVL Tree.
</p>


<h3>Serializer class changes</h3>

<p>Added <code>raptor_serializer_flush()</code> for user code to
indicate to a serializer to flush state since the application knows a
block has been ended, or it needs to save memory.  No serializer
currently implements this, but it is expected the abbreviated
serializers that use a lot of state - Turtle, RDF/XML-Abbrev - would
benefit from this.
</p>

<p>Added an HTML Table serializer with name 'table' contributed by
Nicholas J Humfrey.
</p>

<p>Removed the obsolete 'simple' serializer from the source code.
N-Triples is an appropriate simple (and well-defined) replacement
syntax.
</p>


<h3>Statement class changes</h3>

<p>This was made a more regular class that can be created, copied and
freed using reference counting.   The structure changed to be an
array of 4 raptor terms rather than a complex union focused on
the allowed RDF Statements.  This change allows representing
non-RDF triples as well as triples with named graphs (also known as
quads).
</p>

<p><code>raptor_statement_part_as_counted_string()</code> turns into
a method of the new Term class, as a "statement part" is now
represented as a Term.
</p>


<h3>Term class changes</h3>

<p>This new class with an open structure replaces
<code>raptor_identifier</code> and was created to represent an RDF
Term: literal, URI or blank node and is reference counted and
dynamic.  It is a union of fields for three types.
</p>

<p>This class can fully replace librdf's librdf_node when both Rasqal
and librdf are built with <code>--with-raptor2</code>.  The
semantics of comparison (ordering) and equality are the same.
</p>


<h3>Unicode changes</h3>

<p>Several utility functions were renamed to match their
functionality more accurately and be associated with the Unicode
module set of functions.  For example <code>raptor_utf8_check()</code>
was renamed to <code>raptor_unicode_check_utf8_string()</code>
</p>


<h3>URI class changes</h3>

<p>The whole concept of URI handlers was removed, there is no longer
a way to replace the implementation of the URI class.  The
implementation built in now interns URIs string so that a single URIs
for a string is only ever in memory once, but reference counted.  This
is what Redland librdf has done for many years, and librdf can fully
use this.
</p>

<p>Deprecated functions were removed:
<code>raptor_uri_is_file_uri()</code>.
</p>

<p>The <code>raptor_uri_resolve_uri_reference()</code> now returns the
length of the URI written into the buffer.
</p>


<h3>WWW class changes</h3>

<p>Rename several of the functions to the standard constructor,
destructor and method naming format.
</p>


<h3>XML Writer class changes</h3>

<p>Constructors all gain a world argument and lose error handler,
error data arguments.
</p>


<h3>Configuration changes</h3>

<p>Added configure argument <code>--with-yajl=DIR</code> (or 'no') to
set the prefix where YAJL libraries and headers are installed.
</p>

<p>Raptor headers are now installed in a sub-directory of
<em>PREFIX</em><code>/include</code>.
</p>

<p><code>raptor-config</code> was removed. Building against raptor 2
should be done only using <code>pkg-config</code> with either
<code>--cflags</code> or <code>--libs</code> arguments like this:</p>
<pre>
  cc -o prog prog.c `pkg-config raptor2 --cflags`  `pkg-config raptor2 --libs`
</pre>


<h3>Internal changes</h3>

<p>Code style: lots of changes mostly adding lots more whitespace
such as to show control change (if, while) or early function exit
(return).
</p>

<p>All <code>strcpy()</code> with known lengths and
<code>strncpy()</code> were replaced with <code>memcpy()</code> which
is quicker and compilers optimize better.
</p>

<p>Code style: 
use <code>TYPE* var_name = RAPTOR_CALLOC(TYPE, 1, sizeof(*var_name))</code>
rather than repeat the type name which can be error-prone.
</p>

<p>Code style: put whitespace round assignment and operators i.e.
use <code>c = a + b</code> rather than <code>c=a+b</code>.
</p>

<p>Code style: removed some <code>strdup()</code>s.
</p>

<p>Code style: try to remove un-necessary <code>strlen()</code> by
tending to pass around a string with it's length, a counted string.
This meant adding a few new constructors such as for the URI and Term
classes.
</p>

<p>Code style: methods called with a NULL object return failure
and destructors called with a NULL object return silently rather than
the former mix of crashing or <code>abort()</code>ing.
</p>

<p>Code style: copy constructor is now called
<code>raptor_</code><em>class</em><code>_copy()</code> rather than
<code>raptor_new_</code><em>class</em><code>_from_</code><em>class</em><code>()</code>
for brevity.
</p> 

<p>Code style: print methods return an int return status indicating
success.
</p>


<h3>rapper Utility changes</h3>

<p>Print out the option types next to the description in the <code>-f
help</code> usage message.
</p>

<p>Removed unused <code>-a</code> flag from code.
</p>

<p>Did NOT rename <code>-f</code> option to match the renaming of
features to options in the API.  Not needed.
</p>

<p>Removed long deprecated <code>-n</code> flag which was shortcut for
selecting the N-Triples parser and can be done with <code>-i ntriples</code>
</p>

<p>Removed <code>-s/--scan</code> flag since it is an option of a
single parser (RDF/XML) which can be done with <code>-f/--feature
scanForRDF</code>.
</p>


<h3>Other changes</h3>

<p>Removed support for building raptor with dmalloc debugging
(removing <code>--with-dmalloc</code> configure argument). Valgrind
wins.
</p>

<p>The example 'grapper' GNOME GUI utility for raptor was updated
to the latest GTK APIs (2.5.0+ but still quite old) so that it
builds with all the GTK 'disable deprecated' flags set.  The
UI is not quite correct though - the preferences menu is broken.
</p>

<p>Switched to GIT version control, hosted by GitHub.  The latest
raptor 1 code is available on branch 'raptor1' as well as from the
release tags for specific versions.
</p>



<!-- *************** 1.4.X Series ******************************** -->


<h2 id="rel1_4_21"><a name="rel1_4_21">Raptor 1.4.21 Changes</a></h2>

<p>This is a bug fix only release with no new features.  New
development has moved to raptor 2 where a planned ABI and API break
is underway.
</p>

<p>Fixed Issues:</p>
<ul>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=318">0000318</a>: Cannot end a Turtle literal with \\ inside triple-quotes</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=319">0000319</a>: ntriples parser does not register that it accepts ntriples mime type - text/plain</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=326">0000326</a>: Turtle parser allows '.' in qnames which is not-to-spec</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=331">0000331</a>: Turtle long literals with raw newlines do not count line numbers correctly</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=332">0000332</a>: RDFXML parser finds duplicates and misbehaves (when it shouldn't)</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=337">0000337</a>: raptor/turtle outputs invalid qnames which cause syntax errors on parsing</li>
</ul>

<h3>Parser changes</h3>

<p>N-Triples parser: Declare acceptance of text/plain mime type with
q=0.1
</p>

<p>RDFA parser (via librdfa): Updated to fix some buffer management
problems when it was passed large blocks (4096 bytes or more), a few
memory leaks and some other minor bugs.
</p>

<p>RDF/XML parser: Properly reset the ID-checking set at the start of
each parse.
</p>

<p>Turtle parser: Allow \\ at the end of triple-quoted literals.
Forbid '.'s in prefixes and qnames (follow specification).
Properly count newlines inside the literals for error reporting.
</p>

<h3>Serializer changes</h3>

<p>Turtle serializer: Forbid '.'s in prefixes and qnames (follow
specification).
</p>

<h3>Other Changes</h3>

<p>Updated <code>configure</code> and the build system to use silent
rules for the maintainer (by default), or when
<code>--enable-silent-rules</code> is passed to
<code>configure</code>.  This feature requires building with automake
1.11 which requires autoconf 2.62 or newer when building from GIT.
</p>

<p><code>autogen.sh</code> script was updated to enforce the
autotools versions above.
</p>



<h2 id="rel1_4_20"><a name="rel1_4_20">Raptor 1.4.20 Changes</a></h2>

<p>This is a bug fix only release with no new features.  New
development has moved to raptor 2 where a planned ABI and API break
will happen.  There may be preview releases of raptor 2 with 1.9.x
numbering.
</p>

<p>Fixed Issues:</p>
<ul>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=306">0000306</a>: rapper doesn't handle datatype=""and xml:lang="" properly with RDFa</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=307">0000307</a>: configure fails at vnsprintf test when cross compiling</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=310">0000310</a>:  Raptor does not like single character namespaces with RDFa</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=312">0000312</a>: Ununitialized pointer in example rdfserialize.c causes crash</li>
</ul>

<h3>Parser Changes</h3>

<p>
GRDDL parser: Fix XML parser context resource leak if
<code>raptor_grddl_fetch_uri()</code> fails.  Save and restore error
handlers properly to prevent crashes when an error is reported during
parsing.
</p>

<p>
RDFA parser (via librdfa): Update to latest librdfa GIT sources with head
a438ce68a40e04b399ec2b2c613d0c867d9315c7 <br />
now moved to 
<a href="http://github.com/msporny/librdfa">http://github.com/msporny/librdfa</a>
to fix handling single character namespaces
(<a href="http://bugs.librdf.org/mantis/view.php?id=310">Issue#0000310</a>),
empty datatype attribute and empty xml:lang attributes
(<a href="http://bugs.librdf.org/mantis/view.php?id=306">Issue#0000306</a>)
</p>

<p>Added three unapproved RDFa tests 0172, 0173 and 0174 to cover the
fixes above.
</p>

<h3>Serializer Changes</h3>

<p>
Turtle serializer:
Applied scalability patch from Chris Cannam.
This switches the serializer to use a <code>raptor_avltree</code>
instead of a <code>raptor_sequence</code> for the subject and blanks
used with <code>raptor_abbrev_node_lookup()</code>.  This fixes a
performance problem in the serializing and moves lookups from O(N) to
O(log N) - from list to balanced tree.
</p>

<h3>Other Changes</h3>

<p>If cross compiling, check for <code>vsnprintf()</code> C99 compatible at
runtime by setting define <code>CHECK_VSNPRINTF_RUNTIME</code> during
configuration.
Fixes <a href="http://bugs.librdf.org/mantis/view.php?id=307">Issue#0000307</a>
</p>

<p>Use <code>calloc()</code> for allocating a <code>raptor_statement</code> in
rdfserializer.c example code to properly initialise state.
Fixes <a href="http://bugs.librdf.org/mantis/view.php?id=312">Issue#0000312</a>
</p>

<p>Use <code>AC_SYS_LARGEFILE</code> to get large file IO checks which
allows 32-bit systems to read multi-gigabyte files.
</p>

<p><code>autogen.sh</code> script fix for if test when uname is not in
standard OSX dir.
</p>



<h2 id="rel1_4_19"><a name="rel1_4_19">Raptor 1.4.19 Changes</a></h2>

<blockquote>
<p><strong>WARNING: FUTURE ABI and API CHANGES.</strong> The next
release of raptor 1.4.x will include bug fixes only and no new
features.  New development will move to raptor 2 where a planned ABI
and API break will happen.  There may be preview releases of raptor 2
with 1.9.x numbering.</p>
</blockquote>

<p>Fixed Issues:</p>
<ul>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=259">0000259</a>: Fix NFC check for legal combiner sequence</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=262">0000262</a>: Error when <code>raptor_new_uri()</code> fails in Turtle parser</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=263">0000263</a>: Invalid turtle output syntax on empty integer/double/decimal literals </li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=266">0000266</a>: Default/atom namespace in atom serializer output</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=269">0000269</a>: strstr is called in <code>raptor_parse_chunk()</code> on a buffer string, where it should be called on a null-terminating string.</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=270">0000270</a>: RSS serializer fixes for g++</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=276">0000276</a>: Fix <code>raptor_sequence_set_at()</code> when setting beyond end</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=277">0000277</a>: broken collection abbreviation in turtle serialization</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=287">0000287</a>: Fix <code>raptor_sax2_parse_chunk()</code> calling <code>raptor_log_error_to_handlers()</code> with expat</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=288">0000288</a>: raptor_get_feature function does not return feature value</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=289">0000289</a>: Fix RDFa parser problem when there is a subject and predicate specified on an element, but no child nodes for the object literal</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=290">0000290</a>: Fix performance problems when turtle parsing with lots of namespaces</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=293">0000293</a>: Fix RDF/XML Parser problem with legacy ordinal predicates</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=296">0000296</a>: Avoid calling <code>xsltSetDefaultSecurityPrefs()</code></li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=299">0000299</a>: Avoid calling <code>xmlSetStructuredErrorFunc()</code> and <code>xmlSetGenericErrorFunc()</code></li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=303">0000303</a>: rdfa parser does not parse content as RDFa which librdfa+expat alone handles</li>
</ul>


<h3>Parser Changes</h3>

<p><code>raptor_get_feature()</code> now returns the integer value rather than
just 1 or 0.<br />
<a href="http://bugs.librdf.org/mantis/view.php?id=288">Issue #0000288</a>
</p>

<p>Guess parser: return name of guessed parser not 'guess'.
</p>

<p>N-Triples parser:
Produce error messages when raptor_new_uri() fails. <br />
<a href="http://bugs.librdf.org/mantis/view.php?id=262">Issue #0000262</a>
</p>

<p>RDFa parser:
Fix problem when there is a subject and predicate specified on an
element, but no child nodes for the object literal using
latest librdfa GIT source with head
2ddcb3f9e010d0b3d9ee546e807539be5da1b14a <br />
<a href="http://bugs.librdf.org/mantis/view.php?id=289">Issue #0000289</a>
</p>

<p>RSS tag soup parser:
Huge internal changes:<br />
Recording more atom core structures in triples (such as author, contributor -
person) rather than only channels and items<br />
Introduced a new 'blocks' concept to record single element structured
items such as atom category, link and rss enclosure<br />
Added itunes namespace and container.<br />
</p>

<p>RDF/XML Parser:
Adjust predicate_type when removing ordinal identifier type from predicate. <br />
<a href="http://bugs.librdf.org/mantis/view.php?id=293">Issue #0000293</a>
</p>


<h3>Serializer Changes</h3>

<p>Atom 1.0 serializer:
Now tested and takes more care to try to generate valid Atom 1.0
</p>

<p>Turtle serializer:
Validate XSD integer, decimal and double literal
output. Emit special short forms only if the whole literal value is
consumed by <code>strtol()</code> (for integers) or
<code>strtod()</code> (for decimals and doubles). Otherwise produce a
warning and emit literal in the normal
<code>"value"^^&lt;datatype_uri&gt;</code> format. <br />
<a href="http://bugs.librdf.org/mantis/view.php?id=263">Issue #0000263</a><br />
Fix broken collection abbreviation<br />
<a href="http://bugs.librdf.org/mantis/view.php?id=277">Issue #0000277</a><br />
</p>

<p>RSS serializer:
Fixes for g++ <br />
<a href="http://bugs.librdf.org/mantis/view.php?id=270 ">Issue #0000270</a>
<br />
Added a new serializer feature
<code>RAPTOR_FEATURE_PREFIX_ELEMENTS</code> (short name
prefixElements) for atom and rss 1.0 serializers to decide whether
core elements in the default namespace are declared with the prefix
or without a prefix.<br />
Removed generation of deprecated predicate ordinals of type
<code>RAPTOR_IDENTIFIER_TYPE_ORDINAL</code> and replace with resource type URIs
</p>


<h3>XML Support Changes</h3>

<p>Removed generic calls to <code>xmlSetStructuredErrorFunc()</code>
and <code>xmlSetGenericErrorFunc()</code> which can be a problem when
libxml is shared with other code in memory.  They may be called
optionally but will do a save/restore of the existing functions.
This protection is enabled by the new API call
<code>raptor_set_libxml_flags()</code> to set the flags from values
in enum <code>raptor_libxml_flags</code>. <br />
<a href="http://bugs.librdf.org/mantis/view.php?id=299">Issue #0000299</a>
</p>

<p>Use context-specific libslt security configuration to avoid
calling generic call <code>xsltSetDefaultSecurityPrefs()</code> which
can be a problem when libxslt is shared with other code in memory.
Allow the user to set the policy for raptor globally with new API
function <code>raptor_set_libxslt_security_preferences()</code>. <br />
<a href="http://bugs.librdf.org/mantis/view.php?id=296">Issue #0000296</a>
</p>

<p>Make libxml SAX2 structured errors register parser-specific
handler function <code>raptor_libxml_xmlStructuredErrorFunc()</code>
instead of libxml global structured error handler.  The libxml flag
method above can still enable registerding the global error handlers.
</p>

<p>In <code>raptor_sax2_parse_chunk()</code> fixed calls to
<code>raptor_log_error_to_handlers()</code> when built with expat. <br />
<a href="http://bugs.librdf.org/mantis/view.php?id=287">Issue #0000287</a>
</p>


<h3>Other Changes</h3>

<p>Win32 portability fixes from Lou Sakey:</p>
<ul>
  <li>Handle absence of <code>gettimeofday()</code></li>
  <li>Call <code>xmlCleanupParser()</code> libxml call last to avoid an access
violation on windows.</li>
  <li>Windows <code>vsnprintf()</code> portability patch</li>
  <li><code>raptor_sequence_set_at()</code> fixed to maintain the design
contract: provide "size" consecutive items in "sequence" starting from
"start" even when setting items more than +1 offset beyond the end of
sequence. <br />
<a href="http://bugs.librdf.org/mantis/view.php?id=276">Issue #0000276</a>
  </li>
</ul>

<p><code>rapper(1)</code> utility changes: if counting, do not use a
serializer at all.
</p>


<h3>Internal Changes</h3>

<p>More internal changes to be more resiliant after allocation failure
(Lauri Aalto)
</p>

<p>Reorganised tests in source tree to pull out specific directories
for RDF/XML, Turtle, etc.
</p>

<p>Use a DJ Bernstein hash to replace a linked list for storing a
stack of namespaces.  This makes turtle parsing with lots of
namespaces (100s) much faster.  Based on the initial patch in the bug. <br />
<a href="http://bugs.librdf.org/mantis/view.php?id=290">Issue #0000290</a>
</p>

<p>Use new internal <code>raptor_memstr()</code> function to compare
a string against a buffer that may not be NUL terminated. <br />
<a href="http://bugs.librdf.org/mantis/view.php?id=269">Issue #0000269</a>
</p>

<p><code>raptor_error_handlers</code>: API structure gains world
field. BINARY COMPATIBILITY BREAK: sizeof(raptor_error_handlers)
changed. Source compatibility not broken.
</p>

<p><code>raptor_identifier</code>: API structure gains world
field. BINARY COMPATIBILITY BREAK: sizeof(raptor_identifier)
changed. Source compatibility not broken.
</p>

<p>More fixes for compiling with C++
</p>

<p>Move some more static data as constant to enable more efficient
compilation - moves to data segment of object binary.</p>

<p>Use memmove for overlapping copy, not memcpy when doing relative
URI resolving.
</p>


<h3>Raptor V2 Preparation Changes</h3>

<p>Lots of internal changes were made by Lauri Aalto preparing for
Raptor V2 to fully attach all static data and config to a new
<code>raptor_world</code> object.  A new static instance of this
class is now used internally behind the existing V1 API and will be
required to be constructed by the library user for the V2 API with a
new constructor/destructor.</p>

<p><b>NOTE:</b> The method names here are illustrative of the final
V2 names but are not confirmed - <strong>These functions are not
supported in the 1.4.x series</strong>.  Some methods will still be
altered for fields and (<code>raptor_world</code>) parameters.  All constructors
should have it as a parameter.  All methods will not have them (so
for example, all the URI methods named _v2 will lose the world
parameter and just have the URI parameter - but that is also because
the URI handler/context part will go into raptor_world in V2)</p>

<p>To use the <strong>unsupported and experimental</strong> V2
functions, define <code>-DRAPTOR_V2_EXPERIMENTAL=1</code> when
building with raptor.
</p>

<p>Added <code>raptor_world</code> typedef.</p>

<p>Added raptor world class constructor
<code>raptor_world* raptor_new_world(void)</code> and initializer:
<code>int raptor_world_open(raptor_world* world)</code>
</p>

<p>Added world class destructor:
<code>void raptor_free_world(raptor_world* world)</code>
</p>

<p>Added new V2 methods:</p>
<pre>
  void raptor_world_set_libxslt_security_preferences(raptor_world *world,
    void *security_preferences)

  void raptor_world_set_libxml_flags(raptor_world *world,  int flags)

  void raptor_error_handlers_init_v2(raptor_world* world,
    raptor_error_handlers* error_handlers);
</pre>


<p>Added V2 methods that are versions of existing methods, named with
_v2 suffix:</p>
<pre>
  int raptor_parsers_enumerate_v2(raptor_world* world,
    const unsigned int counter, const char **name, const char **label)

  int raptor_syntax_name_check_v2(raptor_world* world, const char *name);

  void raptor_print_locator_v2(raptor_world* world, FILE *stream,
    raptor_locator* locator);

  const char *raptor_locator_uri_v2(raptor_world* world,
    raptor_locator *locator);

  int raptor_features_enumerate_v2(raptor_world* world,
    const raptor_feature feature, const char **name,
    raptor_uri **uri, const char **label);

  int raptor_serializers_enumerate_v2(raptor_world* world,
    const unsigned int counter, const char **name, const char **label,
    const char **mime_type, const unsigned char **uri_string);

  int raptor_serializer_syntax_name_check_v2(raptor_world* world,
    const char *name);

  int raptor_serializer_features_enumerate_v2(raptor_world* world,
    const raptor_feature feature, const char **name,  raptor_uri **uri,
    const char **label);
</pre>

<p>Added world pointer to raptor_identifier object</p>

<p>Added V2 identifier class constructor:</p>
<pre>
  raptor_identifier* raptor_new_identifier_v2(raptor_world* world,
    raptor_identifier_type type, raptor_uri *uri,
    raptor_uri_source uri_source, const unsigned char *id,
    const unsigned char *literal, raptor_uri *literal_datatype,
    const unsigned char *literal_language);
</pre>

<p>Added V2 parser class method:</p>
<pre>
  raptor_parser* raptor_new_parser_for_content_v2(raptor_world* world,
    raptor_uri *uri, const char *mime_type, const unsigned char *buffer,
    size_t len, const unsigned char *identifier)
  raptor_world* raptor_parser_get_world(raptor_parser* rdf_parser);
</pre>

<p>Added V2 serializer class constructor and method:</p>
<pre>
  raptor_serializer* raptor_new_serializer_v2(raptor_world* world,
    const char *name)
  raptor_world* raptor_serializer_get_world(raptor_serializer* rdf_serializer)
</pre>

<p>Added V2 statement class <code>raptor_statement_v2</code> typdef
for future replacing of <code>raptor_statement</code></p>

<p>Added V2 statement class methods:</p>
<pre>
  void raptor_print_statement_v2(const raptor_statement_v2 * statement,
    FILE *stream);

  unsigned char* raptor_statement_part_as_counted_string_v2(raptor_world* world,
    const void *term, raptor_identifier_type type,
    raptor_uri* literal_datatype, const unsigned char *literal_language,
    size_t* len_p);

  unsigned char* raptor_statement_part_as_string_v2(raptor_world* world,
    const void *term, raptor_identifier_type type,
    raptor_uri* literal_datatype, const unsigned char *literal_language);  

  int raptor_statement_compare_v2(const raptor_statement_v2 *s1,
    const raptor_statement_v2 *s2);
</pre>

<p>Added V2 uri class methods:</p>
<pre>
  unsigned char* raptor_uri_as_counted_string(raptor_uri *uri, size_t* len_p);

  raptor_uri* raptor_new_uri_v2(raptor_world* world,
    const unsigned char *uri_string);

  raptor_uri* raptor_new_uri_from_uri_local_name_v2(raptor_world* world,
    raptor_uri *uri, const unsigned char *local_name);

  raptor_uri* raptor_new_uri_relative_to_base_v2(raptor_world* world,
    raptor_uri *base_uri, const unsigned char *uri_string);

  raptor_uri* raptor_new_uri_from_id_v2(raptor_world* world,
    raptor_uri *base_uri, const unsigned char *id);

  raptor_uri* raptor_new_uri_for_rdf_concept_v2(raptor_world* world,
    const char *name);

  void raptor_free_uri_v2(raptor_world* world, raptor_uri *uri);

  int raptor_uri_equals_v2(raptor_world* world, raptor_uri* uri1,
    raptor_uri* uri2);

  int raptor_uri_compare_v2(raptor_world* world, raptor_uri* uri1,
    raptor_uri* uri2);

  raptor_uri* raptor_uri_copy_v2(raptor_world* world, raptor_uri *uri);

  unsigned char* raptor_uri_as_string_v2(raptor_world* world, raptor_uri *uri);

  unsigned char* raptor_uri_as_counted_string_v2(raptor_world* world,
    raptor_uri *uri, size_t* len_p);

  raptor_uri* raptor_new_uri_for_xmlbase_v2(raptor_world* world,
    raptor_uri* old_uri);

  raptor_uri* raptor_new_uri_for_retrieval(raptor_uri* old_uri);

  raptor_uri* raptor_new_uri_for_retrieval_v2(raptor_world* world,
    raptor_uri* old_uri);

  raptor_uri* raptor_new_uri_for_xmlbase_v2(raptor_world* world,
    raptor_uri* old_uri);

  raptor_uri* raptor_new_uri_for_retrieval_v2(raptor_world* world,
    raptor_uri* old_uri);

  unsigned char* raptor_uri_to_relative_counted_uri_string_v2(raptor_world* world,
    raptor_uri *base_uri, raptor_uri *reference_uri, size_t *length_p);

  unsigned char* raptor_uri_to_relative_uri_string_v2(raptor_world* world,
    raptor_uri *base_uri,  raptor_uri *reference_uri);

  void raptor_uri_print_v2(raptor_world* world,
    const raptor_uri* uri, FILE *stream);

  unsigned char* raptor_uri_to_counted_string_v2(raptor_world* world,
    raptor_uri *uri, size_t *len_p);

  void raptor_uri_set_handler_v2(raptor_world* world,
    const raptor_uri_handler *handler, void *context);

  void raptor_uri_get_handler_v2(raptor_world* world,
    const raptor_uri_handler **handler, void **context);
</pre>

<p>Added V2 www class methods:</p>
<pre>
  raptor_www *raptor_www_new_with_connection_v2(raptor_world* world,
    void* connection);
</pre>

<p>Added V2 qname class methods:</p>
<pre>
  raptor_qname* raptor_new_qname_from_namespace_local_name_v2(raptor_world* world,
    raptor_namespace *ns, const unsigned char *local_name,
    const unsigned char *value);
</pre>

<p>Added V2 namespace class methods:</p>
<pre>
  raptor_namespace_stack* raptor_new_namespaces_v2(raptor_world* world,
    raptor_simple_message_handler error_handler, void *error_data, int defaults);

  int raptor_namespaces_init_v2(raptor_world* world,
    raptor_namespace_stack *nstack,
    raptor_simple_message_handler error_handler, void *error_data,
    int defaults);
</pre>

<p>Added V2 sequence class typedefs and methods:</p>
<pre>
  typedef void (raptor_sequence_free_handler_v2(void* context, void* object));

  typedef void (raptor_sequence_print_handler_v2(void *context, void *object,
    FILE *fh));

  raptor_sequence* raptor_new_sequence_v2(raptor_sequence_free_handler_v2* free_handler,
    raptor_sequence_print_handler_v2* print_handler, void* handler_context);

  void raptor_sequence_set_print_handler_v2(raptor_sequence *seq,
    raptor_sequence_print_handler_v2 *print_handler);
</pre>

<p>Added V2 iostream class methods:</p>
<pre>
  int raptor_iostream_write_uri_v2(raptor_world* world,
    raptor_iostream *iostr,  raptor_uri *uri);

  void raptor_iostream_write_statement_ntriples_v2(raptor_world* world,
    raptor_iostream* iostr, const raptor_statement *statement);
</pre>

<p>Added V2 xml writer class methods:</p>
<pre>
  raptor_xml_writer* raptor_new_xml_writer_v2(raptor_world* world,
    raptor_namespace_stack *nstack, raptor_iostream* iostr,
    raptor_simple_message_handler error_handler, void *error_data,
    int canonicalize);

  int raptor_xml_writer_features_enumerate_v2(raptor_world* world,
    const raptor_feature feature, const char **name, raptor_uri **uri,
    const char **label);
</pre>


<h2 id="rel1_4_18"><a name="rel1_4_18">Raptor 1.4.18 Changes</a></h2>

<p>Fixed Issues:</p>
<ul>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=186">0000186</a>: Add RDFa support to Raptor</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=255">0000255</a>: rss-tag-soup serializer does not generate namespaces so re-serializing in rdf/xml looks wierd for atom</li>
</ul>


<h3>Parser Changes</h3>

<p>A new 
<a href="http://www.w3.org/TR/2008/CR-rdfa-syntax-20080620/">RDFa</a>
parser was added (name <code>rdfa</code>) using
<a href="http://rdfa.digitalbazaar.com/librdfa/">librdfa</a> to
implement it.  librdfa is linked as part of Raptor and
written by Manu Sporny of Digital Bazaar, licensed with the
same license as Raptor.</p>

<p>The RDFa
<a href="http://www.w3.org/2006/07/SWD/RDFa/testsuite/xhtml1-testcases/">test suite</a>
was added to the test and (via librdfa) Raptor passes all but 4 tests
which fail due to different output xmlns attribute ordering (which
does not matter to XML parsers).</p>


<h3>Serializer Changes</h3>

<p>Added new function
<code>raptor_serialize_start_to_iostream()</code> to have the new
semantics of not owning and destroying the passed-in iostream.  This
allows the caller to serialize to an existing iostream and then
to continue to write to it.  <code>raptor_serialize_start()</code>
owns and then closes the iostream that is passed in.
</p>

<p>A new Atom Syndication Format 1.0 (<a href="http://www.ietf.org/rfc/rfc4287.txt">RFC 4287</a>) serializer was added (name <code>atom</code>)
using the RSS 1.0 RDF triple model with mapping to atom terms
and consideration of atom output format conditions.
</p>

<p>RSS 1.0 serializer</p>
<ul>
<li>Allow setting output namespaces for the serializer</li>
<li>Allow writing extra RDF triples as RDF/XML attached to RSS items.</li>
<li>Recognize predicates with XML Literal and emit as
<code>parseType="Literal"</code> or when <code>content:encoded</code>,
as a CDATA block, by RSS 1.0 convention.</li>
<li>Removed code assumptions about triples appearing in a certain order.</li>
<li>Free namespaces and stack in correct order</li>
</ul>

<p>Turtle serializer now respects the <code>writeBaseURI</code>
feature to control generating the <code>@base</code> directive.
</p>

<p>Abbreviated serializers (RDF/XML Abbrev and Turtle) now remove
duplicate triples.
</p>

<p>Added feature <code>RAPTOR_FEATURE_RSS_TRIPLES</code> to add RDF
triples to RSS 1.0 or Atom serializer output with values 'rdfxml' or
'atom-triples'.  Atom triples writes <code>at:map</code> sections for
the <code>atom:entry</code> elements and at:feedmap and
<code>at:entrymap</code> sections to the <code>atom:feed</code>
elements.  <code>at:contentType</code> is used to provide a
<code>type</code> attribute value for an <code>atom:content</code>
that has a URI value.
</p>

<p>Added <code>RAPTOR_FEATURE_ATOM_ENTRY_URI</code> for the Atom
serializer to set the URI of an atom entry.  If the URI matches the
URI of an entry item in the RDF mode of the channel, then an Atom
Entry document is generated rather than an Atom Feed document.
</p>


<h3>QName Class Changes</h3>

<p>Added <code>raptor_qname_to_counted_name()</code> to get
a formatted qname for a name.
</p>

<p><code>raptor_new_qname_from_namespace_local_name()</code> will
accept a NULL namespace to construct a namespace-less qname.
</p>

<h3>Sequence Class Changes</h3>

<p><code>raptor_sequence_set_at()</code> now handles
setting an item at an index in the sequence beyond capacity+1
to automatically extend.
</p>

<p>Added <code>raptor_sequence_delete_at()</code> to delete an item
at a position in a sequence and return it.
</p>

<h3>URI Class Changes</h3>

<p><code>raptor_uri_to_relative_counted_uri_string()</code> now
has support for a base URI with scheme and authority but no path,
so the result can be a relative URI starting with '/'.
</p>

<h3>XML Writer Class Changes</h3>

<p>XML Writer allows adding newlines via
<code>raptor_xml_writer_newline()</code> which
requires use of <code>raptor_xml_writer_flush()</code> to indicate
when XML writer output is finished.
</p>

<p>Added <code>raptor_xml_writer_get_depth()</code> to get the current
XML writer element stack depth.
</p>

<h3>Other Changes</h3>

<p>Many more resiliance checks were added.
</p>

<p>Removed all calls to abort() in code on fatal errors.  This
requires using setjmp and longjmp inside parsers built with
flex and bison.
</p>

<p>The Turtle writer may optionally generate @base depending on
flags.  (This is used by Turtle serializer to handle the writeBaseURI
feature)
</p>

<p>Tidied error messages for <code>rapper(1)</code> when parsing stdin.
</p>

<p>raptor_init() and raptor_finish() use a reference count to ensure
initialising and terminating happen at most once each.
</p>




<h2 id="rel1_4_17"><a name="rel1_4_17">Raptor 1.4.17 Changes</a></h2>

<p>The main changes to this release are:</p>

<p>Added two new JSON serializers: resource-centric 'json' 
(Talis <a href="http://n2.talis.com/wiki/RDF_JSON_Specification">RDF/JSON</a>)
and triple-centric 'json-triples'.
</p>

<p>Made I/O Stream class <code>raptor_iostream</code> support
reading as well as writing with new constructors and
new methods.</p>

<p>Added a new public SAX2 API class <code>raptor_sax2</code>
exposing the existing internal API which has been around since the
first release of Raptor 8 years ago and runs on top of either expat
or libxml2.</p>

<p>Added new public error handlers structure
<code>raptor_error_handlers</code> containing a set of
(function, data pointers) pairs called <code>raptor_handler_closure</code>
for each error log level.
Added <code>raptor_log_level</code> enum for the error log level.
Added an initialization function for the structure,
<code>raptor_error_handlers_init()</code>. 
</p>

<p>Several other API changes, fixes and improvements were made.</p>

<p>Fixed Issues:</p>
<ul>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=252">0000252</a>: Allow controlling of cache headers in Raptor</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=245">0000245</a>: Extra classes added to an OWL object</li>
</ul>


<h3>I/O Stream class changes</h3>

<p>Made I/O Stream class <code>raptor_iostream</code> support
reading data in addition to writing. (Dave B):</p>
<ul>
<li>Deprecated <code>raptor_iostream_handler</code> structure for new
<code>raptor_iostream_handler2</code> structure which contains the
new factory functions for reading.</li>
<li>Added new read I/O stream factory handler typedefs
<code>raptor_iostream_read_bytes_func</code> and
<code>raptor_iostream_read_eof_func</code>.
</li>
<li>Added new <code>raptor_new_iostream_from_handler2()</code> I/O
stream constructor to allow building of read and write iostreams
deprecating <code>raptor_new_iostream_from_handler()</code>.
</li>
<li>Added new <code>raptor_iostream_tell()</code> deprecating
<code>raptor_iostream_get_bytes_written_count</code>.
</li>
<li>Added new read I/O Stream constructors:
<code>raptor_new_iostream_from_sink</code>(),
<code>raptor_new_iostream_from_filename()</code>
<code>raptor_new_iostream_from_file_handle()</code> and
<code>raptor_new_iostream_from_string()</code>
</li>
<li>Added new read I/O Stream methods
<code>raptor_iostream_read_bytes()</code> and
and <code>raptor_iostream_read_eof()</code>.
</li>
</ul>

<p>Added new write I/O Stream method
<code>raptor_iostream_write_string_python()</code> to write an
encoded string to an I/O stream using python / JSON / Turtle /
N-Triples / SPARQL escaping rules.  (Dave B)
</p>


<h3>Serializer Class Changes</h3>
<p>Added two new JSON serializers (Dave B):</p>
<ol>
<li>Resource-centric serializer named <code>json</code> based on
<a href="http://n2.talis.com/wiki/RDF_JSON_Specification">Talis RDF/JSON Specification</a></li>
<li>Triple-centric serializer named <code>json-triples</code> based on the SPARQL results in JSON format.</li>
</ol>

<p>Added new serializer features for the JSON serializers (DaveB):</p>
<ul>
<li><code>RAPTOR_FEATURE_JSON_CALLBACK</code> (name 'jsonCallback') to
set the top-level callback function name wrapper above the outer object.</li>
<li><code>RAPTOR_FEATURE_JSON_EXTRA_DATA</code> (name 'jsonExtraData') to
add extra top-level JSON object data.</li>
</ul>

<p>Example of using the resource-centric serializer while defining a
callback:</p>
<pre>
$ rapper -q -o json -f jsonCallback=foo http://librdf.org/raptor/raptor.rdf
foo(
{
  "http://librdf.org/raptor/#raptor" : {
    "http://usefulinc.com/ns/doap#description" : [ {
...
</pre>


<h3>Statement Class Changes</h3>

<p>Added <code>raptor_statement_compare()</code> to provide an
ordering between <code>raptor_statement</code> objects. (Dave B)
</p>


<h3>Parser Class Changes</h3>

<p>Added new parser features to control HTTP headers in
web requests (Dave B, based on a patch in the bug):<br />
Also never <code>Pragma:</code> header with libcurl ever.<br />
Fixes <a href="http://bugs.librdf.org/mantis/view.php?id=252">Issue#0000252</a>
</p>
<ul>
<li><code>RAPTOR_FEATURE_WWW_HTTP_CACHE_CONTROL</code> to control
sending <code>Cache-Control</code> (default: none)</li>
<li><code>RAPTOR_FEATURE_WWW_HTTP_USER_AGENT</code> to control
sending <code>User-Agent</code> (default: none)</li>
</ul>

<p>Turtle parser:</p>
<ul>
<li>Added tests to forbid <code>'</code> and
<code>'''</code>-quoted strings and to forbid <code>()</code> in
triple predicate position following the updated Turtle spec. (Dave B)</li>
<li>Write ';' statement terminators with a leading
space for consistency with '.' terminator. (Dave R)</li>
<li>Remove canonicalisation of integer and double
to match Turtle latest spec. (Dave B)</li>
</ul>


<h3>QName Class Changes</h3>

<p>Added new methods  <code>raptor_qname_get_local_name()</code>,
<code>raptor_qname_get_value()</code> and
<code>raptor_qname_get_counted_value()</code>. (Dave B)
</p>


<h3>SAX2 Class Changes</h3>

<p>Added new public SAX2 API class <code>raptor_sax2</code> exposind
th existing internal one which has been around since the first
release of Raptor 8 years ago and runs on top of either expat or
libxml2. (Dave B)</p>

<ul>
<li>Constructor: <code>raptor_new_sax2()</code></li>
<li>Destructor: <code>raptor_free_sax2()</code></li>
<li>XML handler methods:
 <code>raptor_sax2_set_start_element_handler()</code>,
 <code>raptor_sax2_set_end_element_handler()</code>,
 <code>raptor_sax2_set_characters_handler()</code>,
 <code>raptor_sax2_set_cdata_handler()</code>,
 <code>raptor_sax2_set_comment_handler()</code>,
 <code>raptor_sax2_set_unparsed_entity_decl_handler()</code> and
 <code>raptor_sax2_set_external_entity_ref_handler()</code>.
</li>
<li>XML handler factory typedefs:
 <code>raptor_sax2_start_element_handler</code>,
 <code>raptor_sax2_end_element_handler</code>,
 <code>raptor_sax2_characters_handler</code>,
 <code>raptor_sax2_cdata_handler</code>,
 <code>raptor_sax2_comment_handler</code>,
 <code>raptor_sax2_unparsed_entity_decl_handler</code> and
 <code>raptor_sax2_external_entity_ref_handler</code>.
</li>
<li>Set XML Namespace handler method:
<code>raptor_sax2_set_namespace_handler()</code>
</li>
<li>Parsing methods:
 <code>raptor_sax2_parse_start()</code> and
 <code>raptor_sax2_parse_chunk()</code>
</li>
<li>Other methods:
 <code>raptor_sax2_inscope_xml_language()</code> and
 <code>raptor_sax2_inscope_base_uri()</code> 
</li>
</ul>


<h3>Serializer Class Changes</h3>

<p>Abbreviated serializers (RDF/XML-Abbrev and Turtle):</p>
<ul>
<li>Switched from using a sequence to using an AVL Tree with a cursor
to more efficiently (faster) group/sort triples by subject.  This
changes the previous syntax output order but has no semantic
difference.  (Dave B)
</li>
<li>Use the AVL Tree to remove duplicate triples. (Dave B)<br />
Fixes <a href="http://bugs.librdf.org/mantis/view.php?id=245">Issue#0000245</a>
</li>
</ul>

<p>Turtle serializer:</p>
<ul>
<li>Feature <code>RAPTOR_FEATURE_WRITE_BASE_URI</code>
added to control writing <code>@base</code> directive to Turtle. (Dave R)</li>
<li>Remove canonicalisation of integer and double
to match Turtle latest spec. (Dave B)</li>
</ul>


<h3>URI Class Changes</h3>

<p>Update URI resolving for RFC3986 changes (Dave B)
</p>


<h3>WWW Class Changes</h3>

<p>Added new method <code>raptor_www_set_http_cache_control()</code>
to set the HTTP <code>Cache-Control:</code> header in requests.
(Dave B, based on a patch in the bug) <br />
Fixes <a href="http://bugs.librdf.org/mantis/view.php?id=252">Issue#0000252</a>
</p>


<h3>XML Class Changes</h3>

<p>Added new method <code>raptor_xml_element_get_language()</code> 
to get the language associated with an element. (Dave B)
</p>


<h3>Portability and Resilience Changes</h3>

<p>Pass on error failures in parser and serializer factory
construction. (Lauri)
</p>

<p>Abbreviated serializers (RDF/XML-abbrev and Turtle): low memory
and allocation failure fixes. (Lauri)
</p>

<p>Altered API function signatures of
<code>raptor_uri_set_handler()</code>,
<code>raptor_uri_get_handler()</code>,
<code>raptor_new_namespaces(),</code>
<code>raptor_namespaces_init()</code> and
<code>raptor_new_xml_writer()</code> to add appropriate
<code>const</code>s. (Lauri)
</p>

<p>Portability fixes for RAPTOR_API and other macros. (Lauri)
</p>

<p>Removal of many sets of writable static data in N-Triples parser, URI
class, Unicode NFC code, libxml support, Turtle writer and XML
writer. (Lauri)
</p>

<p>Portability fixes for <code>round()</code> and
<code>trunc()</code> that are not always available in libc but might
be in libm. (Dave B)
</p>

<p>Turtle/N3 parsers and serializers, RDF/XML_Abbrev serializer: many
low memory fixes and better out of memory errors. (Lauri)
</p>


<h3>Other Changes</h3>

<p>Rewrote internal error log functions to use new error handlers
structures and simplify the calls. (Dave B)
</p>

<p>Expanded internal <code>raptor_avltree</code> datatype support to
add a cursor, allowing it to be used for creating large ordered
sequences that need to be walked. (Dave B)
</p>

<p>Updated <code>rdfdiff</code> utility to handle duplicate triples
in inputs. (Dave B)
</p>

<p><code>raptor_sequence_shift()</code> and
<code>raptor_sequence_unshift()</code> are now as efficient as the
sequence push and pop operations: O(1). (Lauri)
</p>

<p><code>autogen.sh</code> was updated.
</p>

<p><code>rapper</code> utility can now accept multiple
<code>-f</code> / <code>--feature</code> options; previously
only one parser and one serializer feature was possible.
</p>


<h2 id="rel1_4_16"><a name="rel1_4_16">Raptor 1.4.16 Changes</a></h2>

<p>The main changes to this release are:</p>

<p>Provide 100% support for the
<a href="http://www.w3.org/TR/2007/REC-grddl-20070911/">GRDDL W3C Recommendation of 2007-09-11</a>.
</p>

<p>The
<a href="http://www.dajobe.org/2004/01/turtle/">Turtle</a>
parser and serializer were updated to support
<code>@base</code> for specifying a base URI, following
Turtle of 2007-09-11.
</p>

<p>The Turtle and RDF/XML serializers had performance improvements
for large graphs.
</p>

<p>Added a TRiG Parser based on Turtle with named graph support.</p>

<p>Several other API changes, fixes and improvements were made.</p>

<p>Fixed Issues:</p>
<ul>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=0000188">0000188</a>: Wrong RAPTOR_API definition for mingw</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=0000192">0000192</a>: raptor_uri_filename_to_uri_string() - getcwd() loop error</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=0000194">0000194</a>: parser and serializer don't recognize the same mime types</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=0000195">0000195</a>: Compile error in raptor_serialize.c debug code</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=0000207">0000207</a>: RDF file can be parsed, but not then serialised.</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=0000210">0000210</a>: RAPTOR_FEATURE_WRITER_XML_DECLARATION broken in Ruby</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=0000214">0000214</a>: Empty rdf:about, plus base-uri, produces incorrect turtle output</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=0000216">0000216</a>: flickrdf segfaults at raptor_serialize_end!</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=0000217">0000217</a>: flickrdf segfaults at raptor_serialize_end!</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=0000232">0000232</a>: libraptor does not correctly free up libxml error handler, causing crashes in subsequent calls to libxml error handlers</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=0000237">0000237</a>: raptor_sequence robustness: item ownership on insert error</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=0000238">0000238</a>: GRDDL parser in SVN overwrites blank nodes when merging graphs</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=0000239">0000239</a>: GRDDL parser in SVN returns 60 less triples with http://www.w3.org/</li>
</ul>


<h3>Namespaces Class Changes</h3>

<p><code>raptor_namespaces_init()</code> now returns an integer
status.
</p>

<h3>Parser Class Changes</h3>

<p>
Added <code>raptor_graph_handler</code> typedef and
<code>raptor_set_graph_handler()</code> to return named graph
identifiers during parsing, initially for the TRiG parser.
</p>

<p>These were added the GRDDL parser:</p>
<ul>
  <li><code>RAPTOR_FEATURE_MICROFORMATS</code> (microformats) to enable
    hCard and hCal microformats</li>
  <li><code>RAPTOR_FEATURE_HTML_TAG_SOUP</code> (htmlTagSoup) to use
    the HTML tag soup parser if the XML parsing fails</li>
  <li><code>RAPTOR_FEATURE_HTML_LINK</code> (htmlLink) to enable html
    &lt;link&gt;</li>
  <li><code>RAPTOR_FEATURE_WWW_TIMEOUT</code> (wwwTimeout) for setting
    URI retrieval timeouts during processing</li>
</ul>


<h3>XML Element Class Changes</h3>

<p>Added
<code>raptor_new_xml_element_from_namespace_local_name()</code>
constructor to make an XML element from a local name relative
to a <code>raptor_namespace</code>.
</p>

<h3>Unicode Class Changes</h3>

<p>Defined a new <code>raptor_unichar</code> typedef for a Unicode
codepoint defined as <code>unsigned long</code> which was the
previous type used.  Altered the Unicode function to take it as a
parameter.  <code>raptor_unicode_char_to_utf8()</code>,
<code>raptor_utf8_to_unicode_char()</code>,
<code>raptor_unicode_is_xml11_namestartchar()</code>,
<code>raptor_unicode_is_xml10_namestartchar()</code>,
<code>raptor_unicode_is_xml11_namechar()</code> and
<code>raptor_unicode_is_xml10_namechar()</code>.
</p>

<h3>URI Class Changes</h3>

<p>Added <code>raptor_uri_compare()</code> and
<code>raptor_uri_compare_func</code> function pointer for
implementing it in the <code>raptor_uri_handler</code>.  The handler
now has a version field <code>initialised</code> to trigger the new
factory method for uri compare when the version is 2 or more.
</p>

<h3>WWW Class Changes</h3>
<p>
Added <code>raptor_www_set_connection_timeout()</code>
to set the WWW retrieval connection timeout in seconds.
</p>

<p>
Added <code>raptor_www_final_uri_handler</code> typedef and
<code>raptor_www_set_final_uri_handler()</code> to return
the final URI seen <em>during</em> WWW retrieval such as after
redirects.
</p>

<p>
Added <code>raptor_www_get_final_uri()</code> to return the final URI
<em>after</em> a WWW retrieval which might include redirects.
</p>


<h3>Parser Changes</h3>

<p>The GRDDL parser/processor was substantially updated and now
supports 100% of the
<a href="http://www.w3.org/TR/2007/REC-grddl-20070911/">Gleaning Resource Descriptions from Dialects of Languages (GRDDL)</a>
syntax, W3C Recommendation of 2007-09-11:
</p>
<ul>
  <li>Transforming XML with XSLT 1.0</li>
  <li>Processing XML namespaces.</li>
  <li>Transforming XHTML with XSLT 1.0</li>
  <li>Processing HTML profiles.</li>
  <li>Handling of base URIs and URI redirects.</li>
  <li>XInclude processing.</li>
  <li>Parsing as RDF/XML when it is recognised after a transform.</li>
</ul>

<p>it also:</p>
<ul>
  <li>Handles hCard and hCal microformats when feature
    <code>RAPTOR_FEATURE_MICROFORMATS</code> is enabled (default
    enabled).</li>
  <li>Handles &lt;link type="application/rdf+xml" href="URI" /&gt; to
    RDF/XML content when feature <code>RAPTOR_FEATURE_HTML_LINK</code> is
    enabled (default enabled).</li>
  <li>Attempts parsing with libxml's HTML parser if XML parsing fails,
    when feature <code>RAPTOR_FEATURE_HTML_TAG_SOUP</code> is enabled
    (default enabled).</li>
  <li>Discards errors during recursive processing such as 404s,
    failure to parse, failure of XSLT processing.</li>
  <li>Uses XSLT security - denies reading, writing to files,
    directories or writing to network.</li>
  <li>Accepts the <code>RAPTOR_FEATURE_NO_NET</code> feature to prevent
    all networking.</li>
  <li>Allows fine-grained URI filtering with
    <code>raptor_parser_set_uri_filter()</code>.</li>
</ul>

<p>RDF/XML parser recognising was updated to just the start of the
document for guessing if it should handle content and to try
to avoid html URLs.
</p>

<p>RSS Tag soup parser recognising was updated to accept with the
string 'feed' in the identifier.
</p>

<p>TRiG Parser was added based on the Turtle parser, adding named
graphs.  It returns name graph URis via a callback set with new API
call <code>raptor_set_graph_handler()</code>
</p>

<p>Turtle parser added <code>@base</code> support, fixed turtle
escapes to URIs.  Recognising was updated to look for
<code>@prefix</code> early in the document.
</p>

<h3>Serializer Changes</h3>

<p>Turtle serialiser changes:</p>
<ul>
<li>Generate <code>@base</code> when an output base URI is given.</li>
<li>Properly format Turtle XSD doubles using new snprintf code.</li>
<li>Fix unwanted blank line at end of Turtle list abbreviation.</li>
<li>Use AVL Tree rather than sequence for significant performance
improvement for large serialisations.</li>
</ul>

<p>RDF/XML serialiser was changed to emit a legal empty RDF/XML
document when no triples are serialised and to skip emitting
statements with bad predicate uris rather than returning an error.
</p>

<p>RDF/XML Abbrev serialiser was changed to use an AVL tree rather
than sequence for significant performance improvement for large
serialisations.
</p>

<h3><code>rapper</code> Utility Changes</h3>

<p>Added an <code>--show-graphs</code> option to print named graph
URIs as seen (such as with TRiG).
</p>

<p>Added <code>-I</code> / <code>--input-uri</code> and
<code>-O</code> / <code>--output-uri</code> options to set the
input / parsing and output / serializing base URIs
separately. Defaults remain the same - the serializer base URI
defaults to the input base URI, however it was set.
</p>


<h3>Portability Changes</h3>

<p>Fixes for when building from Subversion on cygwin (EOL issues,
Makefiles).</p>

<p>Remove unused semicolons for prevention of compiler warnings.</p>

<p>Fix some uninitialized variables that some compilers complain about.</p>

<p>Allow <code>RAPTOR_ASSERT_DIE</code> to be externally defined.</p>

<p>Allow <code>RAPTOR_WWW_BUFFER_SIZE</code> to be externally defined.</p>


<h3>Other Changes</h3>

<p><code>autogen.sh</code> was updated to handle program versions
better using an inline perl helper.
</p>

<p>Start to add resiliance to memory allocation failures
and errors inside the library.
</p>

<p>Added AVL Tree code to make much faster key:value lookups.  This
is used for RDF/XML parser XML ID checks and in the 'abbrev'
serializers - Turtle and RDF/XML-Abbrev for looking up nodes.
</p>

<p>Better libxml error messages are now returned, mentioning
some of the names and values that caused the error.
</p>



<h2 id="rel1_4_15"><a name="rel1_4_15">Raptor 1.4.15 Changes</a></h2>

<h3>General Changes</h3>

<p>GRDDL parser now passes the (unapproved) test suite for the
<a href="http://www.w3.org/TR/2007/WD-grddl-20070302/">GRDDL W3C Working Draft 2 March 2007</a>
except for two tests that have been reported as having errors.
</p>

<p>When using libcurl as the WWW retrieval library, errors in
resolving a URI such as not found (404) are now reported as proper
errors and cause parsing to fail rather than just return no triples.
</p>

<p>Some improvments where made to guessing for a parser to match some
content.  Firstly, any mime type with Q &lt;10 is added to the score,
don't lose the influence of the mime type entirely.  The consequence of
this is that Turtle can pretend to be a partial N3 parser. Secondly,
the XHTML mime type is now correctly recognised by the GRDDL parser
rather than the RSS Tag Soup parser.</p>


<p>Fixed Issues:</p>
<ul>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=0000174">#0000174</a>: Serializing to rdfxml* with a base_uri doesn't set the <code>xml:base</code> attribute, but does truncate <code>rdf:about</code> and <code>rdf:resource</code> values</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=0000177">#0000177</a>: Some URI references mis-resolved</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=0000178">#0000178</a>: No errors from accessing 404 URIs</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=0000180">#0000180</a>: messages garble output to stdout</li>
</ul>


<h3>Parser and Serializer Changes</h3>

<p>Added better error reporting for XML errors using the
libxml structured error reporing api.  From
</p>
<pre>
$ rapper -i grddl http://librdf.org/LICENSE.txt
rapper: Parsing URI http://librdf.org/LICENSE.txt
rapper: Error - URI http://librdf.org/LICENSE.txt - XML error - http://librdf.org/LICENSE.txt:2: 
rapper: Error - URI http://librdf.org/LICENSE.txt - XML error - parser 
rapper: Error - URI http://librdf.org/LICENSE.txt - XML error - error : 
rapper: Error - URI http://librdf.org/LICENSE.txt - XML error - Document is empty
rapper: Error - URI http://librdf.org/LICENSE.txt - XML error -                   Redland RDF Application Framework - License
rapper: Error - URI http://librdf.org/LICENSE.txt - XML error -                   ^
rapper: Failed to parse URI http://librdf.org/LICENSE.txt grddl content
rapper: Parsing returned 0 triples
</pre>
<p>To this:</p>
<pre>
$ rapper -i grddl http://librdf.org/LICENSE.txt
rapper: Parsing URI http://librdf.org/LICENSE.txt
rapper: Error - URI http://librdf.org/LICENSE.txt:1 - XML parser error: Document is empty
rapper: Error - URI http://librdf.org/LICENSE.txt:1 - XInclude processing failed for GRDDL document
rapper: Failed to parse URI http://librdf.org/LICENSE.txt grddl content
rapper: Parsing returned 0 triples
</pre>


<p>GRDDL parser updated to support the
<a href="http://www.w3.org/TR/2007/WD-grddl-20070302/">GRDDL W3C Working Draft 2 March 2007</a>:
</p>
<ul>
<li>Namespace and profile URI handling now works.</li>
<li>Run XML Include processing</li>
<li>Throw away XML validation errors</li>
<li>When a namespace URI is seen that was RDF/XML Mime type, run
the RDF/XML parser on the content.</li>
<li>Look for substrings inside rel attributes when looking for profiles.</li>
<li>Return a warning and do not fail if XSLT sheet is not found</li>
<li>Use libxml structured errors for better reporting</li>
<li>Removed old hard-coded xslt scripts</li>
</ul>

<p>Turtle parser was changed to accept the N3 mime
type <code>text/rdf+n3</code> at low Q(quality)
so it might work for N3 that is the RDF subset - quite common.
</p>

<p>Changed the RSS Tag Soup parser and RSS 1.0 serializer to stop
sharing use of the declared namespaces so that when using both at the
same time, there is no double-free of the same objects.
</p>

<p>Correct the content: namespace URI in the RSS parser and
serializers.
</p>


<h3>Other Changes</h3>

<p><code>rapper</code> gains a <code>-t/--trace</code> option to show
URIs traversed.  Handy for GRDDL.
</p>

<p><code>raptor_uri_resolve_uri_reference()</code> no longer goes
past the end of buffer when the relative URI is <code>,/</code>
</p>


<p>Added an internal API for capturing parsed data as it is seen.
Use by GRDDL parser but with no public API.
</p>

<p>Added an internal API for structured error reporting.  Updates
made throughout the library but with no public API.
</p>

<p>Internal API <code>raptor_new_sax2()</code> signature changed to
just have an <code>error_handlers</code> pointer argument rather than
multiple function / user_data pairs.
</p>




<h2 id="rel1_4_14"><a name="rel1_4_14">Raptor 1.4.14 Changes</a></h2>

<h3>General Changes</h3>

<p>Added a 
<a href="http://www.dajobe.org/2004/01/turtle/">Turtle Terse RDF Triple Language</a> serialiser by <a href="http://codeson.net/">Dave Robillard</a> based on the existing RDF/XML-Abbrev
serialiser.
</p>

<p>Added a GraphViz
<a href="http://www.graphviz.org/doc/info/lang.html">DOT format</a> serialiser
by Evan Nemerson.
</p>

<p>The GRDDL parser now does namespace and profile URI recursion and
has other improvements and fixes.
</p>

<p>Fixed Issues:</p>
<ul>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=32">#0000032</a>: GRDDL indirection feature request</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=141">#0000141</a>: Crash when GRDDL parser is used with a used-generated blank node ID prefix.</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=143">#0000143</a>: Crash when GRDDL parser fails to retrieve URI.</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=148">#0000148</a>: A public function to generate a blank ID would be nice though.</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=155">#0000155</a>: entity processing in literal property elements (with libxml)</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=157">#0000157</a>: Crash when RDF/XML Abbrev serializer sees a <code>rdf:type</code> predicate with a literal object.</li>
</ul>

<h3>Configuration Changes</h3>

<p><code>raptor-config</code> gains a <code>--private-libs</code>
for the internal libraries used in building raptor, with the public
ones only emitted with <code>--libs</code>.
</p>

<p><code>raptor.pc</code> now uses <code>Libs.private</code> for
internal dynamically linked libraries.
</p>

<p>The libxml minimum version is now 2.6.8 since 2.6.7 crashes on
PPC64 Linux.  2.6.8 was released March 2004 so this should be no
burden.</p>

<p>Do not use <code>PATH_MAX</code> so raptor can build on Hurd.
</p>

<h3>Parser Changes</h3>

<p>RDF/XML parser now looks for the RDF/XML root element and
namespace declaration in the initial bytes of content when guessing.
This allows content that is in other mime types such as
<code>application/xml</code> to be more likely guessed as RDF/XML.
</p>

<p>When guessing a parser to use, if an an exact match is found for
the mime type (q=10), then that parser is used.
</p>

<p>The GRDDL parser has several changes:</p>
<ul>
  <li>Recurses through the root element's namespace URI and the profile
    URIs.  It excludes several common namespace URIs from processing
    (XHTML, RDF/XML, XML Schema) and does not traverse the GRDDL profile
    URI itself.
  </li>
  <li>Tries to guess which of the RDF/XML or Turtle parser is wanted
    from an XSLT result.  Guessing is performed because not all the XSLT
    sheets used in the demonstrations set the mime type to match Turtle's
    unregistered type, or because the return no mime type, or return an
    XML one, when it was expected RDF/XML would be received.
  </li>
  <li>Watches the processed URIs and never visits the same URI more
    than once in a session.
  </li>
  <li>Passes on general XSLT errors to raptor rather than letting the
    default (printing to stderr) work.
  </li>
  <li>Declares XSLT 'base' and 'Base' parameters to allow some XSLT
    sheets to work - pragmatism.
  </li>
</ul>

<h3>Serializer Changes</h3>

<p>Added a new
<a href="http://www.dajobe.org/2004/01/turtle/">Turtle Terse RDF Triple Language</a>
serializer and two new internal APIs based on the existing RDF/XML-Abbrev
serialiser, written by <a href="http://codeson.net/">Dave Robillard</a>:
</p>
<ul>
  <li><code>turtle_writer</code> for serializing triples to Turtle This
    may be moved to the public API in a future release.</li>
  <li><code>raptor_abbrev</code> for the common 'abbreviated
    serializer' core that is shared between the RDF/XML-Abbrev and Turtle
    serializer.</li>
</ul>

<p>Added a new GraphViz
<a href="http://www.graphviz.org/doc/info/lang.html">DOT format</a> serialiser
writen by Evan Nemerson.
</p>

<p>Note that testing the turtle serializing (<code>make test</code>)
requires the <code>rdfdiff -u</code> and a few of the tests take some
time to run.</p>


<h3>Other Changes</h3>

<p>Added <code>raptor_home_url_string</code>
and <code>raptor_license_string</code> exported strings.
</p>

<p>Added <code>raptor_parser_generate_id()</code> as a public function
to generate an identifier for a parser.
</p>

<p><code>rdfdiff</code> gains the -u/--base-uri option to specify the
from file base URI so that if the from file is a local file or
relative URI, it can be given an absolute base.</p>

<p>Failures to retrieve content from a URI using
the <code>raptor_www</code> class implementations now return a
failure as well as setting the HTTP status code to 403 or 404 as
appropriate.  Previously success may have been returned with no
bytes.</p>


<h2 id="rel1_4_13"><a name="rel1_4_13">Raptor 1.4.13 Changes</a></h2>

<h3>General Changes</h3>

<p>Prevent losing memory for a <code>raptor_xml_writer</code> when a
serializer is reused several times.</p>

<p>Fixed issues reported on the <a href="http://bugs.librdf.org/">Redland Issue Tracker</a>:</p>
<ul>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=134">Issue#0000134</a>: Check for equal scheme and authority during construction of relative URIs from two absolute URIs.</li>
</ul>


<h3>Configuration Changes</h3>

<p>In maintainer mode, add all the supported compiler <code>-W</code>
warning flags to the CFLAGS.
</p>

<p>Allow <code>LEX</code> to be set to things that aren't exactly
'flex'.</p>

<h3>Documentation Changes</h3>

<p>Added single triple serializing example to the tutorial to
demonstrate serializing without parsing and building
a <code>raptor_statement</code>.</p>

<h3>Other Changes</h3>


<p>Declare several raptor functions with GCC printf-formatting
attributes when using a new enough GCC.</p>

<p>RDF/XML parser now creates literals with
<code>raptor_stringbuffer</code> so that it does a lot less copying
when constructing longer literals.
</p>

<p>Added single <code>raptor_statement</code> serializing example
to demonstrate serializing alone without parsing.</p>



<h2 id="rel1_4_12"><a name="rel1_4_12">Raptor 1.4.12 Changes</a></h2>

<p>Restored the order of serialized syntaxes back to the same as in
Raptor 1.4.10 which Redland was relying on - asking to serialize to
mime type 'application/rdf+xml' without specifying a parser name in
Redland with Raptor 1.4.11 wrote it in XMP instead of RDF/XML as
it used to.  This happened more often with language bindings.
That problem will be fixed in a future release of Redland but for now,
this stops wierd things like that happening.
</p>


<h2 id="rel1_4_11"><a name="rel1_4_11">Raptor 1.4.11 Changes</a></h2>

<h3>General Changes</h3>

<p>Added <code>raptor_get_feature_count()</code> to return
the count of features, in preference to using the
macro value <code>RAPTOR_FEATURE_LAST</code>.
</p>

<p>Added <code>raptor_www_set_uri_filter()</code> method of the
WWW class (<code>raptor_www</code>) objects to have an
optional URI filter function that checks if the URL given is
allowed to be retrieved, or denied entirely.
</p>

<p>Fixed issues reported on the <a href="http://bugs.librdf.org/">Redland Issue Tracker</a>:</p>
<ul>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=0000112">#0000112</a>: raptor_namespaces_qname_from_uri not public API?</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=0000110">#0000110</a>: strcasecmp problem under windows (raptor_rss.c does not compile)</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=0000091">#0000091</a>: guess parser should guess the syntax each time it is run, not be fixed</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=0000089">#0000089</a>: Add a NONET feature to prevent network fetches</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=0000041">#0000041</a>: Allow multiple transformation URLs in data-view:transformation property</li>
  <li><a href="http://bugs.librdf.org/mantis/view.php?id=0000014">#0000014</a>: bNode content written twice in rdfxml-abbrev output mode</li>
</ul>


<h3>Documentation Changes</h3>

<p>The
<a href="http://librdf.org/raptor/api/">Raptor Reference Manual</a>
now includes descriptions of all the parsers and serializers and the
tutorial has a new section describing how to filter URIs and deny
network requests.</p>


<h3>Parser Changes</h3>

<p>Added functionality to prevent network requests either via setting
a new feature <code>RAPTOR_FEATURE_NO_NET</code> that denies network
requests during a parser operation or with a URI filter function
<code>raptor_parser_set_uri_filter()</code>.  This function uses
<code>raptor_www_set_uri_filter()</code> internally.
</p>

<p>Added <code>raptor_get_need_base_uri()</code> to tell if a parser
requires a base URI argument. Presently the <em>N-Triples</em> parser
is the only parser that does not require a base URI.
<code>raptor_start_parse()</code> will now throw an error if no base
URI is given and it is needed.
</p>

<p>The <em>GRDDL parser</em> was changed to
handle a list of URIs in the profile so it now
can support <code>dataview:transformation</code> in XML taking a list
of transformations as defined in
<a href="http://www.w3.org/2004/01/rdxh/spec#grddl-xhtml">The GRDDL profile for XHTML</a> part of the GRDDL specification.
It now also recognises
<a href="http://research.talis.com/2005/erdf/wiki/Main/RdfInHtml">Embedded RDF</a> and
<a href="http://microformats.org/wiki/hcalendar">HCalendar</a>
using well known XPaths and transforms them to RDF triples using well
known XSLT sheet URIs.
</p>

<p>The <em>Guess parser</em> now resets after each parse and does a
fresh guess on the syntax based on the incoming information.
Fixes <a href="http://bugs.librdf.org/mantis/view.php?id=91">Issue#0000091</a>
</p>


<p>The <em>Turtle parser </em> (and experimental N3 parser) were
changed to now require base URIs as they always should have.  The
error messages when reporting problems with grammar tokens now return
better responses.  Added better memory cleanup during parser error
recovery.
</p>


<h3>Serializer Changes</h3>

<p>The <em>RSS 1.0 Serializer</em> now works again.</p>

<p>Updated the <em>RDF/XML Abbreviated</em> serializer to do proper
reference counting on the blank/resource nodes used as subjects and
objects to prevent dual-triple generation.  Fixes the reported
<a href="http://bugs.librdf.org/mantis/view.php?id=14">Issue#0000014</a>
</p>


<h3>Other Changes</h3>

<p>The internal SAX2 API can also prevent network fetches with the
feature <code>RAPTOR_FEATURE_NO_NET</code>.</p>

<p>Fixed a SAX2 problem that caused parsers that use it to leak
memory for 1 URI, affected RDF/XML and RSS Tag Soup.
</p>

<p><code>rapper</code> help and verbose message formats were tidied.</p>



<h2 id="rel1_4_10"><a name="rel1_4_10">Raptor 1.4.10 Changes</a></h2>

<h3>General Changes</h3>

<p>No parser will now generate a triple with an identifier type
<code>RAPTOR_IDENTIFIER_TYPE_ORDINAL</code>.  Only identifier type
resource, anonymous (blank node) and literal will be generated.
All serializers will convert any
<code>RAPTOR_IDENTIFIER_TYPE_ORDINAL</code> type on input to type
resource.
</p>


<h3>Configuration Changes</h3>

<p>No longer adds LDFLAGS to pkgconfig file <code>raptor.pc</code>
and <code>raptor-config</code> fixing
<a href="http://bugs.librdf.org/mantis/view.php?id=97">Issue#0000097</a>.
</p>


<h3>Parser Changes</h3>

<p>All parsers no longer generate a triple with an identifier type
<code>RAPTOR_IDENTIFIER_TYPE_ORDINAL</code>, as deprecated in 1.4.8.
The replacement type generated is <code>RAPTOR_IDENTIFIER_TYPE_RESOURCE</code>.
</p>


<p>The RSS Tag Soup (<code>rss-tag-soup</code>) parser now makes the
triples appear before parser destruction. This caused odd symptoms
like parsing in python returning no triples and the parser then
crashing during object destruction.
</p>

<p>The RDF/XML (<code>rdfxml</code>) parser no longer crashes if a
comment is seen outside an element, such as before or after the root
element.</p>


<h3>Serializer Changes</h3>

<p>The RDF/XML (<code>rdfxml</code>) serializer no longer crashes if
the serializer is used more than once.
</p>



<h2 id="rel1_4_9"><a name="rel1_4_9">Raptor 1.4.9 Changes</a></h2>

<h3>Configuration and Build Changes</h3>

<p>Now using <a href="http://subversion.tigris.org/">Subversion</a>
for version control and the <a href="INSTALL.html">Raptor installation instructions</a> explain how to get Raptor from Subversion.</p>

<p>configure now allows <code>--enable-parsers=node</code> and
<code>--enable-serializers=none</code>.  Using both is possible!</p>

<p>No longer require libxml2 for the RSS Tag Soup parser</p>

<p>Various Win32 fixes and VC build files updates from John Barstow.
</p>


<h3>Documentation Changes</h3>

<p>A new 
<a href="http://librdf.org/raptor/api/tutorial.html">Raptor Tutorial</a>
was written covering using all parsing and serializing functions along with
example code.
</p>

<p>The
<a href="http://librdf.org/raptor/api/reference-manual.html">Raptor Reference Manual</a> 
now covers 100% of all functions, structs and defines with gtkdoc generated
documentation.</p>


<h3><code>rapper</code> utility Changes</h3>

<p><code>rapper</code> now uses namespaces found in parsing to give
hints to the serializer as to how to format the output.  The result
of this is that <code>rapper</code> can be used as an RDF
pretty-printer and is especially good at such things as turning flat
N-Triples to RDF/XML or RDF/XML-Abbrev. such as:
</p>
<pre>
rapper -q -i ntriples -o rdfxml-abbrev example.nt
</pre>


<h3>Parser Changes</h3>

<p>All parsers no longer generate
<code>RAPTOR_IDENTIFIER_TYPE_PREDICATE</code> as the statement
predicate type, as deprecated in 1.4.8.  The replacement
type generated is <code>RAPTOR_IDENTIFIER_TYPE_RESOURCE</code>.</p>

<p>The Turtle parser now has <code>true</code> and <code>false</code>
boolean literals, which were accidently omiited from the parser in
the 1.4.8 update.
</p>

<p>Parsers can register capabilities for handling multiple mime types
with Q values.  These are then used in WWW requests for content
in the <code>Accept:</code> header for HTTP.  Added
<code>raptor_parser_factory_add_mime_type</code> for registering,
<code>raptor_parser_get_accept_header</code> to get the accept header
values for the types supported by one parser.
</p>

<p>From the previous change, the RSS parser now accepts several
unregistered RSS mime types as well as the registered Atom one; the
RDF/XML parser accepts unregistered mime type <code>text/rdf</code>
seen occasionally; the Turtle parser accepts several experimental
mime types.  All unregistered or experimental types are accepted with
lower Q than any registered type.
</p>

<p>The RSS Tag Soup parser for RSS* and Atom no longer requires
libxml2 (for it's XML Reader API).  Internal changes mean that it
will fully work on top of expat.</p>



<h3>Serializer Changes</h3>

<p>The RSS/Atom serializer now uses input namespace declarations to
choose namespaces on output.</p>

<p>Added <code>raptor_serialize_set_namespace_from_namespace</code>
to set a namespace for serializing from an existing
<code>raptor_namespace</code>.
</p>

<p>Serializing to RDF/XML (or RDF/XML Abbrev) now does not
double-free URI strings.
Fixes <a href="http://bugs.librdf.org/mantis/view.php?id=65">Issue#0000065</a>
</p>

<p>RSS serializer no longer writes the XML header twice.</p>


<h3>IOStream Class Changes</h3>

<p>Added <code>raptor_iostream_write_uri</code> to directly write a URI
to an iostream without the need to go via a string.</p>

<p>Fixed bug in <code>raptor_iostream_write_xml_any_escaped_string</code>
failing to write ';' after escaping U+0009 and U+000A</p>


<h3>Namespaces Class Changes</h3>

<p>Added <code>raptor_namespaces_qname_from_uri</code> to do URI
splitting into qname prefering to use the current in-scope namespaces
before having to search.</p>

<p><code>raptor_namespaces_format</code> now NULL-terminates the namespace string.
Fixes <a href="http://bugs.librdf.org/mantis/view.php?id=62">Issue#0000062</a>
</p>

<p>Added <code>raptor_namespace_get_counted_prefix</code> to return a
namespace prefix and it's length.</p>


<h3>QName Class Changes</h3>

<p>Added <code>raptor_qname_get_namespace</code> to get the namespace
associated with a QName.</p>


<h3>StringBuffer Class Changes</h3>

<p><code>raptor_stringbuffer_append_counted_string</code> and
<code>raptor_stringbuffer_append_string</code> now Do nothing on
appending a NULL string or a string of length 0.
Fixes <a href="http://bugs.librdf.org/mantis/view.php?id=73">Issue#0000073</a>
</p>


<h3>Unicode Class Changes</h3>

<p><code>raptor_utf8_to_unicode_char</code> now also checks for
overlong UTF-8 sequences, illegal code positions or out of range
codes.
</p>


<h3>URI Class Changes</h3>

<p>Deprecated <code>raptor_uri_is_file_uri</code> which takes a
URI string argument for new function <code>raptor_uri_string_is_file_uri</code>
which more clearly says that.
</p>

<p>Changed all URI string calloc/mallocs to add enough room for a
full pointer at the string end to stop valgrind moaning on 64bit
systems when looking for the end of string NUL.
</p>

<p><code>raptor_uri_set_handler</code> and
<code>raptor_new_iostream_from_handler</code> now take const
<em>handler</em> arguments.
</p>


<h3>WWW Class Changes</h3>

<p>Get the curl success status into a long, not an int which causes
failure on 64 bit.
Fixes <a href="http://bugs.librdf.org/mantis/view.php?id=75">Issue#0000075</a>
</p>

<p>WWW requests for content to parse now always send an appropriate
<code>Accept:</code> header with Q values for the parser, or for the
<code>guess</code> parser, all supported mime types.
</p>


<h3>Internal Changes</h3>

<p>Added XML element methods
<code>raptor_xml_element_get_attributes</code> and
<code>raptor_xml_element_get_attributes_count</code>,
<code>raptor_xml_element_is_empty</code>
to the SAX2 API.
</p>

<p>Many internal changes were made to the SAX2 API to finally
separate XML and RDF/XML parts.  The SAX2 API is now fully usable on
either libxml2 or expat.  That last sentence implies a lot of work,
by the way.</p>



<h2 id="rel1_4_8"><a name="rel1_4_8">Raptor 1.4.8 Changes</a></h2>

<h3>General Changes</h3>

<p>A large source re-arrangement was performed.  All C sources and
headers that build the library are now in the src dir, general
documentation in the doc dir and utilities in the utils dir.  This
both tidied up the mixture of files at the top level and also enabled
better use with gtk-doc.
</p>

<p>Future API change: From the next release of
Raptor, <code>raptor_statement</code> predicates will return
identifiers of type <code>RAPTOR_IDENTIFIER_TYPE_RESOURCE</code>
instead of <code>RAPTOR_IDENTIFIER_TYPE_PREDICATE</code>.
Identifiers of type <code>RAPTOR_IDENTIFIER_TYPE_ORDINAL</code> may
no longer be returned in any statement position (to be confirmed).
</p>

<p>Version Control change: Raptor will be switching to use
<a href="http://subversion.tigris.org/">Subversion</a>
for version control after the 1.4.8 release.  Please check the
<a href="http://svn.librdf.org/">Redland Subversion site</a>
for the latest status or the online
<a href="http://librdf.org/raptor/INSTALL.html">Raptor installation notes</a>
for the raptor specific subversion installation information.
</p>



<h3>Configuration Changes</h3>

<p>The autogen.sh script for building from CVS was revamped to be
more modular.</p>

<p><code>configure</code> now takes an <code>--enable-gtk-doc</code>
option to enable building of the documentation using the
<code>gtk-doc</code> utility.  It is by default enabled only if the
utility is available.
</p>

<p>Added a new configure option <code>--enable-serializers</code> (in
1.4.7) to allow the selection of the required RDF serializers from
any of those supported.</p>

<p><code>raptor-config</code> now has a <code>--options</code>
argument to list the configured or discovered options of the library
such as parsers, serializers and other choices.
</p>


<h3>Documentation Changes</h3>

<p>The GNOME <code>gtk-doc</code> program is now used to
automatically extract documentation from source comments into
reference documentation.  This is then merged with templates and
additional documentation to provide a reference manual for raptor
as XML document which is turned into HTML along with GNOME devhelp
support.</p>

<p>This new documentation intended to replace the libraptor manual
page/web page as easier to read document with scope for better
expanding with more detail of raptor including examples and tutorial
information.  The manual page will continue to contain the summary
information for the present.
</p>


<h3>Portability Changes</h3>

<p>Fixed a long-standing URI resolution bug on win32 - only remove
leading / if there is one present (patch from John C. Barstow)</p>


<h3><code>rapper</code> utility Changes</h3>

<p>Altered the <code>-g</code> argument to invoke the guessing parser
rather than guess on file/URI name alone.  This is now equivalent to
choosing an input syntax of <em>guess</em> with <code>-i guess</code>.</p>

<p>Added a <code>--show-namespaces</code> long option (no short version)
to show namespaces that are declared in the parsed content.
</p>


<h3>Parser Changes</h3>

<p>A new guessing parser was added, picking the actual parser to use
at run-time based on protocol or other information.</p>

<p>Allow a content type returned by a protocol (such as HTTP) to
enable choosing of parser at run-time.  Added a new optional
parser factory method <code>content_type_handler</code> to return this.
</p>

<p>Allow parsers to handle several syntaxes rather than only 1 or 2.
</p>

<p>Parsers can now return namespace prefix/URI declarations as
they are given in the content by the means of a new handler type
<code>raptor_namespace_handler</code> and parser method
<code>raptor_set_namespace_handler</code>.  Duplicate namespace
prefix/URIs can be returned.
</p>

<h4>GRDDL Parser Changes</h4>

<p>Bug fix when the entire content is in one chunk (René Puls).</p>

<h4>Guessing Parser Changes</h4>

<p>A new parser that guesses the actual parser to use at run-time
based on a combination of MIME Content-Type, file or URI name and in
future, iniital bytes of the content.  If the Content-Type is an
exact match to a known parser, it is always chosen before trying
heuristics.
</p>

<h4>RDF/XML Parser Changes</h4>

<p>When emitting literals, handle a datatyped empty literal.  This
is a post-REC errata for the revised RDF/XML recommendation.
See
<a href="http://lists.w3.org/Archives/Public/www-archive/2005Jul/0017.html">archived example</a>
for further information.
</p>

<h4>RSS Tag Soup Parser Changes</h4>

<p>Added atom 1.0 support including use of the new namespace.  Atom
0.3 namespace terms are turned into new properties.  Replace atom
copies of Dublin Core or RSS properties with the original terms:
</p>
<div style="text-align:center">
<table>
<tr><th>Atom 1.0 term</th>               <th>Original term</th></tr>
<tr><td><code>atom:content</code></td>   <td><code>rss:description</code></td></tr>
<tr><td><code>atom:id</code></td>        <td><code>rss:link</code></td></tr>
<tr><td><code>atom:published</code></td> <td><code>dc:date</code></td></tr>
<tr><td><code>atom:rights</code></td>    <td><code>dc:rights</code></td></tr>
<tr><td><code>atom:title</code></td>     <td><code>rss:title</code></td></tr>
</table>
</div>

<p>Apply the in-scope base URI (such as from <code>xml:base</code>)
to atom 1.0 fields that take URI values:
<code>atom:id</code>, <code>atom:icon</code> and <code>atom:logo</code>.
</p>

<p>Added optional date parsing code to turn XML RSS date fields into
ISO format ones, suitable for Atom and XML schema datatypes format.
Will use library parsedate code from curl or INN if available.
</p>

<p>XML RSS field <code>pubDate</code> is now turned into Dublin Core
<code>dc:date</code> field in the ISO format.
</p>

<p>XML RSS field <code>content</code> is turned into
<code>content:encoded</code> in RDF triples on output with
escaping.</p>

<h4>Turtle Parser Changes</h4>

<p>Updated to support Turtle version 2006-01-02
(<a href="http://www.dajobe.org/2004/01/turtle/">announcement</a>).
</p>

<p>Switch qname, blank node and prefix definitions to SPARQL ones.</p>

<p>Check for illegal not-hexadecimal \u and \U escape values.</p>

<p>Fix greedy matching of long literals ("""....""") that ended on
the last """ found rather than the first.</p> <!-- """ -->

<p>Added double and decimal constants.</p>

<p>Added optional +- sign to all numeric constants.</p>

<p>Allow \" escape inside long strings.</p>

<p>Take care to reset the generated <code>raptor_statement</code>
language and datatype fields when not used.
</p>


<h3>Serializer Changes</h3>

<p>Added a new Atom 1.0 serializer (name <em>atom</em>)
by parameterising the RSS 1.0 serializer.
</p>

<p>Added a new Adobe XMP compatible serializer (name <em>rdfxml-xmp</em>)
by parameterising the RDF/XML Abbreviated serializer.  Patch provided by
Sid Steward.
</p>

<p>All serializers can be chosen at <code>configure</code> time from
those available using configure option <code>--enable-serializers</code>.
</p>

<p>The RSS parser and serializer can now be independently enabled or
disabled.  The RSS serializer no longer requires an XML parser.</p>


<h3>RDF/XML Serializer / XML Writer Changes</h3>

<p>A new XML Writer feature
<code>RAPTOR_FEATURE_WRITER_XML_VERSION</code> was added to allow
chosing XML 1.0 (value 10) or XML 1.1 output (value 11).  This
feature is also accepted by serializers as an option and used by the
RDF/XML and RDF/XML-Abbrev serializers.
</p>

<p>A new XML Writer feature
<code>RAPTOR_FEATURE_WRITER_XML_DECLARATION</code> was added to allow
omitting the XML declaration (default true).
</p>

<p>Added functions <code>raptor_xml_any_escape_string()</code>
and <code>raptor_iostream_write_xml_any_escaped_string()</code>
which take an XML version.  The XML 1.0 functions give errors
when attempting to write #x1-#x1f (excluding #x9, #xA, #xD) or #x7F.
</p>


<h3>Atom 1.0 Serializer Changes</h3>

<p>Added a new serializer using the Atom 1.0 format and namespace.
This reads RDF triples in the RSS 1.0 model, along with any
additional atom 1.0 properties and serializes an Atom 1.0 feed
file.</p>


<h3>Adobe XMP Serializer Changes</h3>

<p>Added a new serializer writing RDF/XML in the profile used by
Adobe XMP.  Note that this does require RDF triples to be used in a
certain style; for example all triple subjects are the "current
documment" giving <code>rdf:about=""</code>.</p>


<h3>URI Class Changes</h3>

<p>Fix a bug when adding a default path of / to a URI
in functions <code>raptor_new_uri_for_xmlbase()</code>
and <code>raptor_new_uri_for_retrieval()</code>.
(Bug #<a href="http://bugs.librdf.org/mantis/view.php?id=45">0000045</a>)
</p>


<p><em>raptor_uri_equals</em> was altered to accept NULL pointers,
which do not compare equal to a non-NULL URI.  NULL does equal NULL.
</p>


<h3>Internal Changes</h3>

<p>The internal SAX2 class was extensively changed so that remaining
interdependencies with the RDF/XML parser were removed and it can now
be re-used for other syntaxes cleanly.  Several functions
were modified or added.</p>

<p>Removed old and hardly-tested internal support for XML entity
resolution (libxml only).</p>

<p>Various fixes for GCC 4 warnings.
</p>


<h2 id="rel1_4_7"><a name="rel1_4_7">Raptor 1.4.7 Changes</a></h2>

<p>Fix a couple of crashes in the RSS tag soup parser / serializer
(Dave Beckett, Suzan Foster).</p>

<p><code>configure</code> now looks for the
<code>libxslt/xslt.h</code> header as well as the
<code>libxslt</code> library and disables XSLT and GRDDL support it
if is missing.  This catches systems with the libraries without
headers as has happened on some OSX versions.
</p>

<p>In serializers rdfxml and rdfxml-abbrev, report failure to
serialize to RDF/XML if the predicate URI is not absolute.
</p>


<h2 id="rel1_4_6"><a name="rel1_4_6">Raptor 1.4.6 Changes</a></h2>

<p>Added <code>--with-xslt-config</code> configure option</p>

<p>Added a new parser for
<a href="http://www.w3.org/2004/01/rdxh/spec">Gleaning Resource Descriptions from Dialects of Languages (GRDDL)</a>
which allows reading XHTML and XML as RDF triples by using profiles
in the document that declare XSLT transforms from the XHTML/XML
content into RDF/XML which is the RDF content.  It does not
support all the GRDDL styles, for example
<code>dataview:namespaceTransformation</code>,
or perform recursive transformations.
</p>

<p>The turtle parser now accepts """long literals"""</p> 

<p>XML writer feature support were added in 1.4.5 and not documented.
The new functions are:
<code>raptor_xml_writer_features_enumerate</code>,
<code>raptor_xml_writer_set_feature</code>,
<code>raptor_xml_writer_set_feature_string</code>,
<code>raptor_xml_writer_get_feature</code> and
<code>raptor_xml_writer_get_feature_string</code>.
The three XML writer features added are
\fBRAPTOR_FEATURE_WRITER_AUTO_INDENT\fR with boolean value (default true)
to auto-indent the XML,
\fBRAPTOR_FEATURE_WRITER_AUTO_EMPTY\fR with boolean value (default true)
to automatically generate empty elements if a start/end element sequence
has no content and
\fBRAPTOR_FEATURE_WRITER_INDENT_WIDTH\fR with an integer value (default 2)
to set the indenting level for the XML.
</p>

<p>New build configuration and portability fixes for win32 (John Barstow)</p>

<p>Portability fixes for win32 - added
<code>SIZEOF_UNSIGNED_SHORT</code> (Dave Viner, others)</p>

<p>Added a signing memory debugging system to aid checking when
raptor-allocated memory is freed in another library or vice-versa
enabled by <code>--with-memory-signing</code> configure option
(defaults to on in maintainer mode).</p>

<p>Fixed a few internal malloc/frees to use RAPTOR_MALLOC / RAPTOR_FREE
so that the above signed memory system worked.</p>

<p>RDF/XML serializer:
Use the maximal name when splitting a predicate.<br />
Turn datatyped literals that are rdf:XMLLiteral into inline XML with
<code>rdf:parseType="Literal"</code> rather than XML-escaped.
</p>

<p>RDF/XML abbreviated serializer:
Fix a crash when there is a NULL base URI.
Use the maximal name when splitting a predicate.<br />
Turn datatyped literals that are rdf:XMLLiteral into inline XML with
<code>rdf:parseType="Literal"</code> rather than XML-escaped.
</p>

<p>RSS tag soup parser:
Fix crash with unexpected use of <code>alternate</code> attribute.<br />
Update from Suzan Foster to reflect the latest status of the
enclosure vocabulary and allow multiple common items and fields.
</p>

<p>RSS 1.0 serializer:
Added RSS enclosures serializing.
</p>

<p><code>grapper</code> example GTK program now stores the window
width and height using gconf2.</p>


<h2 id="rel1_4_5"><a name="rel1_4_5">Raptor 1.4.5 Changes</a></h2>

<p>Added a new <em>RDF/XML with abbreviations</em> serializer
<code>rdfxml-abbrev</code> written by Steve Shepard which handles
several of the abbreviations specified by the
<a href="http://www.w3.org/TR/rdf-syntax-grammar/">RDF/XML Syntax Specification (Revised)</a>
W3C Recommendation.  It is suitable for writing small documents as
there are known scaling issues.
</p>

<p>The RSS tag soup parser was updated to work better when there is
no base URI given.  It also now supports reading the 
<a href="http://inamidst.com/rss1.1/">RSS 1.1</a> format and
turning it into RSS 1.0 model triples.</p>

<p>Deprecated <code>raptor_ntriples_string_as_utf8_string</code> as
rather too internal to be useful, since it only works with a parser.
</p>

<p>More fixes to work around the broken libxml2 on Apple OSX 10.3.x
with inconsistent shared libraries / headers.</p>

<p>Experimental and incomplete Notation 3 parser - updated to match
changes to Turtle.  CVS changes only, not enabled in standard builds.
</p>



<h2 id="rel1_4_4"><a name="rel1_4_4">Raptor 1.4.4 Changes</a></h2>

<p>Make the RSS tag soup parser handle RSS 0.9 namespace elements by
turning them into RSS 1.0.</p>

<p>Fix a couple of crashes in the RSS 1.0 serialiser when
no base URI is used.</p>

<p>Make <code>raptor_uri_to_relative_counted_uri_string</code>
work when the base or reference URI have no paths such as like
<em>http://example.org</em>
</p>

<p>Added portability fixes for Win32 to get Raptor 1.4.3 building
with MS Visual Studio using expat and libcurl.  The RAPTOR_INTERNAL
define was moved to the build configuration and defines added for
integral type sizes.  Patch from Dave Viner (dviner at apache dot
org).</p>



<h2 id="rel1_4_3"><a name="rel1_4_3">Raptor 1.4.3 Changes</a></h2>

<p>A release with the major new feature of an XML writer API.
This is now used along with a new supporting XML element class to
improve the existing RDF/XML serializer and to provide a new
<a href="http://purl.org/rss/1.0/spec">RSS 1.0</a> serializer.
</p>

<p>This API it is also used by the next release of
<a href="http://librdf.org/rasqal/">Rasqal</a> to provide serializing
of query results to XML.
</p>

<p>The new <code>raptor_xml_writer</code> class functions added are:
<code>raptor_new_xml_writer</code> (constructor),
<code>raptor_free_xml_writer</code> (destructor),
<code>raptor_xml_writer_empty_element</code>,
<code>raptor_xml_writer_start_element</code>,
<code>raptor_xml_writer_end_element</code>,
<code>raptor_xml_writer_cdata</code>,
<code>raptor_xml_writer_cdata_counted</code>,
<code>raptor_xml_writer_raw</code>,
<code>raptor_xml_writer_raw_counted</code>,
<code>raptor_xml_writer_comment</code> and
<code>raptor_xml_writer_comment_counted</code>.
</p>

<p>The new <code>raptor_xml_element</code> class functions added are:
<code>raptor_new_xml_element</code> (constructor),
<code>raptor_free_xml_element</code> (destructor),
<code>raptor_xml_element_get_name</code>,
<code>raptor_xml_element_set_attributes</code>,
<code>raptor_xml_element_declare_namespace</code> and
<code>raptor_iostream_write_xml_element</code>.
</p>


<h3>Parser Changes</h3>

<p>RSS tag soup parser now works with older libxml2s (2.5.10+),
including the one shipped with some Apple OSX versions that has an
inconsistent header file and library.</p>

<p>RSS tag soup parser recognises/scores more common XML RSS file names.</p>

<p>RSS tag soup parser turns XML RSS
<code>&lt;guid isPermaLink="true"&gt;val&lt;/guid&gt;</code>
into RDF/XML form <code>&lt;guid rdf:resource="val"/&gt;</code>, leaving
the non isPermaLink form to be a literal value.</p>

<p>A bug was found in libxml2 that causes double expanding of XML
entities in RDF/XML.  This has been reported but cannot be worked
around from raptor.  The expat XML parser can be used as an
alternative, as it does not have this problem.  A test was added for
this bug but it will not cause the test suite ('make check') to
fail.</p>

<p>Added additional 
<a href="http://www.dajobe.org/2004/01/turtle/">Turtle</a>
parser tests that cover Notation 3 syntax that is not part of the
Turtle language.</p>

<p>Added
<code>raptor_parser_set_feature_string</code> and
<code>raptor_parser_get_feature_string</code>
methods to set/get string feature values.</p>


<h3>Serializer Changes</h3>

<p>Added feature <code>relative_uris</code> for serializers.  This
is used by the RDF/XML serializer and enabled by default.</p>

<p>Added feature <code>start_uri</code> for serializers with a string
value to set the start URI for serializing.  Not used at present.</p>

<p>Added new methods <code>raptor_serializer_features_enumerate</code>
to list serializer features and functions to set/get serializer
feature integer or strings values:
<code>raptor_serializer_set_feature</code>,
<code>raptor_serializer_get_feature</code>,
<code>raptor_serializer_set_feature_string</code> and
<code>raptor_serializer_get_feature_string</code>.
</p>

<p>Added <code>raptor_serialize_set_namespace</code> to allow user
declaration of prefix/URI namespaces pairs as serializing hints.</p>

<p>the RDF/XML serializer was improved using the new XML Writer class
so it now uses any user-declared namespace hints in it's output and
emits relative URIs whenever possible.  The latter was provided
by a patch from René Puls.</p>

<p>A new 
<a href="http://purl.org/rss/1.0/spec">RSS 1.0</a>
serializer was added, using the new XML Writer class
and using the same structures, classes and properties as the RSS tag
soup parser.</p>


<h3>URI class changes</h3>

<p>Added relative URI generating code from a patch written by René Puls
and provide this with two new methods
<code>raptor_uri_to_relative_uri_string</code> and
<code>raptor_uri_to_relative_counted_uri_string</code>.
</p>

<p>Added <code>raptor_uri_print</code> to print a URI to a file handle.</p>

<p>Added methods <code>raptor_uri_to_string</code> and
<code>raptor_uri_to_counted_string</code> to return a URI as newly
allocated strings.</p>


<h3>I/O Stream Changes</h3>

<p>Many classes gained methods to write to iostreams, supporting the
new XML Writer class functionality.  The added methods are:
<code>raptor_iostream_write_namespace</code>,
<code>raptor_iostream_write_ntriples_string</code>,
<code>raptor_iostream_write_qname</code>,
<code>raptor_iostream_write_statement_ntriples</code>,
<code>raptor_iostream_write_stringbuffer</code>,
<code>raptor_iostream_write_xml_element</code> and
<code>raptor_iostream_write_xml_escaped_string</code>.
</p>


<h3>Namespace Class Changes</h3>

<p>Added <code>raptor_namespace_copy</code> copy
constructor and <code>raptor_new_namespace_from_uri</code>
constructor to build a namespace from a raptor_uri object.</p>

<p>Added utility function <code>raptor_new_namespace_parts_from_string</code>
to decode syntax of the form
<code>xmlns:</code><em>prefix</em><code>="</code><em>uri</em><code>"</code>
into <em>prefix</em> and <em>uri</em> string pairs.
</p>

<p>Added <code>raptor_namespaces_find_namespace_by_uri</code> method
for namespace stack to find a declared namespace by URI.  This
complements <code>raptor_namespaces_find_namespace</code> which
already provides searching by prefix.</p>


<h3>Unicode and UTF-8 Changes</h3>

<p>Added several methods for checking characters forming
parts of XML 1.0 or XML 1.1 names:
<code>raptor_unicode_is_xml10_namestartchar</code>,
<code>raptor_unicode_is_xml11_namestartchar</code>,
<code>raptor_unicode_is_xml10_namechar</code> and
<code>raptor_unicode_is_xml11_namechar</code>.
</p>

<p>Added a function <code>raptor_utf8_check</code> to check that a
string is legal UTF-8 and all the encoded Unicode characters are in
the range U+0 &lt;= character &lt;= U+10FFFF</p>

<p>Added a function <code>raptor_xml_name_check</code> to check that
a string is a legal XML name (1.0 or 1.1) as well as legal UTF-8.</p>


<h3>Other Changes</h3>

<p>Feature support: Added <code>raptor_feature_value_type</code> to
determine value of a feature - either integer (most) or string.</p>

<p>XML QName class: Added <code>raptor_qname_copy</code> copy
constructor.</p>

<p>Sequence class: Added <code>raptor_sequence_join</code>
to join two sequences of items, leaving one empty.</p>

<p>Statement class: Added <code>raptor_statement_copy</code> copy
constructor and <code>raptor_free_statement</code> destructor.
Previously these were internal to raptor.</p>

<p>The <code>rapper</code> utility was modified to add a feature form:
<code>-f xmlns:</code><em>PREFIX</em><code>="</code><em>URI</em><code>"</code>
allowing the setting of output serializer namespaces.</p>

<p>The namespace URI string constants exported by raptor are now of
type unsigned char*.</p>


<h2 id="rel1_4_2"><a name="rel1_4_2">Raptor 1.4.2 Changes</a></h2>

<p>Make <code>raptor_xml_escape_string</code> fail correctly when
given bad UTF-8 to escape.</p>


<h2 id="rel1_4_1"><a name="rel1_4_1">Raptor 1.4.1 Changes</a></h2>

<p>Fixed a buffer overrun in decoding a URI scheme in
<code>raptor_uri</code> constructors such as
<code>raptor_new_uri</code>.</p>

<p>Fixed a crash in RSS enclosures crash when the <code>url</code>
attribute seen on a non-<code>&lt;enclosure&gt;</code> element</p>

<p><code>raptor_xml_escape_string</code> return value has changed to
be an int, returning &lt;0 on failure.  This allows the empty string
encoding an empty string case to work and be distinguished from an
error.
</p>


<h2 id="rel1_4_0"><a name="rel1_4_0">Raptor 1.4.0 Changes</a></h2>

<p>A release with the major new feature of providing serializing of
RDF triples to syntaxes.  It also added a new support class for I/O
streams and had other minor fixes.</p>

<p>Added a Raptor Serializer class (<code>raptor_serializer</code>)
with similar style to Parser (<code>raptor_parser</code>).  Two
serializers are provided, for RDF/XML and N-Triples.  The serializing
can be done to files, C <code>FILE*</code> or to strings.  The
raptor_iostream class that provides this also allows writing
to any other form by creating a custom iostream.
</p>

<p>The new raptor_serializer class functions added are:
<code>raptor_serializers_enumerate</code>,
<code>raptor_serializer_syntax_name_check</code>,
<code>raptor_new_serializer</code>,
<code>raptor_free_serializer</code>,
<code>raptor_serialize_start</code>,
<code>raptor_serialize_start_to_filename</code>,
<code>raptor_serialize_start_to_string</code>,
<code>raptor_serialize_start_to_file_handle</code>,
<code>raptor_serialize_statement</code>,
<code>raptor_serialize_end</code>,
<code>raptor_serializer_get_iostream</code>,
<code>raptor_serializer_set_error_handler</code>,
<code>raptor_serializer_set_warning_handler</code> and
<code>raptor_serializer_get_locator</code>
</p>

<p>Added a Raptor I/O stream abstraction in
<code>raptor_iostream</code> class to support serializing of RDF to
multiple output streams such as to filenames, to C standard I/O
<code>FILE*</code> handles and to strings especially for
cross-language use.  A <code>raptor_iostream_handler</code> can
be used to construct a user-defined iostream.
</p>

<p>The new raptor_iostream class functions added are:
<code>raptor_new_iostream_from_handler</code>,
<code>raptor_new_iostream_to_sink</code>,
<code>raptor_new_iostream_to_filename</code>,
<code>raptor_new_iostream_to_file_handle</code>,
<code>raptor_new_iostream_to_string</code>,
<code>raptor_free_iostream</code>,
<code>raptor_iostream_write_bytes</code>,
<code>raptor_iostream_write_byte</code>,
<code>raptor_iostream_write_end</code>,
<code>raptor_iostream_write_string</code>,
<code>raptor_iostream_write_counted_string</code>,
<code>raptor_iostream_get_bytes_written_count</code>,
<code>raptor_iostream_write_decimal</code> and
<code>raptor_iostream_format_hexadecimal</code>.
</p>


<p>The <code>rapper</code> utility was modified to use serializer
class so that the output formats supported are now N-Triples
(<code>-o ntriples</code>) - the default, and RDF/XML (<code>-o
rdfxml</code>).</p>


<p>Raptor now exports more static namespace URI strings for
general application use:
<code>raptor_xml_namespace_uri</code>,
<code>raptor_rdf_namespace_uri</code>,
<code>raptor_rdf_schema_namespace_uri</code>,
<code>raptor_xmlschema_datatypes_namespace_uri</code>,
<code>raptor_owl_namespace_uri</code>,
and the length
<code>raptor_rdf_namespace_uri_len</code>.
</p>

<p>The raptor_stringbuffer class gained a new method
<code>raptor_stringbuffer_copy_to_string</code>
which allows efficient copy-out of a constructed string.
</p>

<p>The raptor_www class gained a new method
<code>raptor_www_fetch_to_string</code> to allow retrieving of
web content as a single string.
</p>

<p>RSS tag soup parser gained support for generating triples for
enclosures, after a patch from Suzan Foster.  Changes made include
correcting the enclosures namespace and tidying some memory leaks.
</p>


<h2 id="rel1_3_3"><a name="rel1_3_3">Raptor 1.3.3 Changes</a></h2>

<p>A release with major improvements along with several minor fixes.</p>

<p>Raptor's License was changed from LGPL 2.1/MPL 1.1 to
LGPL 2.1/Apache 2</p>

<p>Thanks to Chris Pointon for several patches to make Raptor
easier to build under Win32 which were applied, with some slight
modifications.</p>

<p>Increased WWW content retrieval buffer size from 256 bytes to 4K
since this was causing problems for even moderate size documents.</p>

<p>After testing raptor on a very large RDF/XML file with many
<code>rdf:ID</code> values, the check for duplicate values was found
to be inefficient in memory and slow.  The implementation was
improved to be more memory efficient and a new parser feature
<code>check_rdf_id</code> was added to disable checking (default is
enabled).</p>

<p>Added a new Unicode NFC checker to replace the functionality
formally available by calling the GNOME glib function
g_utf8_normalize.  This new checker is done via several tables and
adds approximately 50K to the object size of the library when
compiled on x86.  This code and tables can be disabled with configure
option <code>--disable-nfc-check</code> causing all checks to
succeed.</p>

<p>Fix the exporting of
<code>raptor_xml_literal_datatype_uri_string</code> and
<code>raptor_xml_literal_datatype_uri_string_len</code> as constants
for use by applications.  Previously raptor.h wasn't doing this
correctly.</p>

<p>Added <code>raptor_calloc_memory</code> for allocating zeroed
memory inside raptor, for use by applications passing memory in/out
of raptor.</p>

<p>Added a new configure option <code>--enable-parsers</code> to
allow the selection of the required RDF parsers from any of those
supported (RDF/XML, Turtle, N-Triples, RSS tag soup).
</p>

<p>Reorganised the sources to split parsing support from RDF/XML
to support compiling without this parser.</p>

<p>Updated the RSS Tag Soup parser to start to handle the Atom 0.3
currently being standardised by the
<a href="http://www.ietf.org/html.charters/atompub-charter.html">IETF Atom Publishing Format and Protocol</a>
working group.
</p>

<p>Altered the Turtle parser to work with large source documents that
exceeded bison limits.  Thanks to Geoff Chappell for providing a fix for
this.</p>

<p>Rewrote the URI parsing to create an internal structure and
improved the relative URI resolving in preparation for future work
such as potentially supporting URI canonicalisation such as proposed
to be used by Atom.</p>


<h2 id="rel1_3_2"><a name="rel1_3_2">Raptor 1.3.2 Changes</a></h2>

<p>A release with some minor fixes.</p>

<p>Added a new configure option
<code>--with-expat-source=</code><em>DIR</em>
to allow the use of external expat source trees in either the old or
newer directory structure style. (Patch from Mark Smith).</p>

<p>Added <code>raptor_alloc_memory</code> for handlers that need to
allocate memory in the same heap as raptor uses for
<code>raptor_free_memory</code>. This is mostly useful for allocating
memory that is freed by raptor in error, ID and statement handlers
on win32 which has separate heaps for different DLLs.</p>

<p>A bug was fixed where errors which happened when fetching WWW
content were always printed to stderr.  They are now passed to the
main error routines which allows applications to retrieve them.</p>

<p>Accessor functions were added for parts of the public
<code>raptor_locator</code> structure which makes it possible to get
structured error information from language bindings via Redland
(Patch from Edd Dumbill).  The new functions are:</p>

<ul>
<li><code>int raptor_locator_line(raptor_locator *locator);</code></li>
<li><code>int raptor_locator_column(raptor_locator *locator);</code></li>
<li><code>int raptor_locator_byte(raptor_locator *locator);</code></li>
<li><code>const char * raptor_locator_file(raptor_locator *locator);</code></li>
<li><code>const char * raptor_locator_uri(raptor_locator *locator);</code></li>
</ul>

<p>The Unicode Normal Form C (NFC) checking via the GNOME glib
library function <code>g_utf8_normalize</code> is broken, comparing
the data it says is failed against other NFC checkers.  It is also
slower than need be since it is doing full normalizing rather than
just checking for NFC, and adds a rather large dependency for just
one function.  A new portable checker will be added in a later
release.</p>




<h2 id="rel1_3_1"><a name="rel1_3_1">Raptor 1.3.1 Changes</a></h2>

<p>A release primarily to fix some win32 and portability issues.</p>

<p>raptor.h now includes stdarg.h</p>

<p>Corrected the <code>raptor_print_statement</code> declaration in
raptor.h for the argument statement to have one less 'const' which
matches the actual code.</p>

<p>Made several portability fixes for compiling natively on win32
which doesn't quite do POSIX or C99.</p>

<p>Changed the support for file: URIs and converting to and from
filenames.  It now %-escapes spaces and % characters on conversion
to and from filenames with
<code>raptor_uri_uri_string_to_filename</code>,
<code>raptor_uri_uri_string_to_filename_fragment</code>
and
<code>raptor_uri_filename_to_uri_string</code>.
For Win32, more tests were added and the
format of URIs supported corrected to use the <code>file:///c:</code>
form rather than <code>file://c|/</code></p>

<p>URIs that resolve to directories now return an error when lstat is
available to check.</p>



<h3>Parser Changes</h3>

<p>The
<a href="http://www.dajobe.org/2004/01/turtle/">Turtle</a>
parser was updated to only allow language with non-datatyped literals,
allow a '_' immediately after a ':' in qnames and to make a bare ':'
qname work correctly.
</p>

<p>The Turtle parser was fixed to re-initialise correctly when
performing multiple parsings.  The other parsers already did this
correctly.</p>

<p>Added a warning to the RDF/XML parser for unknown
<code>rdf:parseType</code> values, when parsing in lax mode - which
is the default.  It now tells the user when the parsing is working as
'Literal' mode by finding an unknown value.  This is controlled by a
new parser feature warn_other_parsetypes which is default set true
in lax mode.  Parser modes are controlled by the
<code>raptor_set_parser_strict</code> method.</p>



<h2 id="rel1_3_0"><a name="rel1_3_0">Raptor 1.3.0 Changes</a></h2>

<p>A release primarily to provide support for
the new <a href="http://librdf.org/rasqal/">Rasqal</a>
RDF query library but with some new features and fixes.</p>


<h3>Parser Changes</h3>

<p>Added a new constructor
 <code>raptor_new_parser_for_content</code> to guess the parser to use
from hints in URIs or content, using a new utility function
<code>raptor_guess_parser_name</code>.</p>

<p>Additional checks were added to the RDF/XML parser for
RDF-namespaced names in element and attributes and if they are
forbidden giving an error otherwise if unknown, giving a warning.</p>

<p>The
<a href="http://www.dajobe.org/2004/01/turtle/">Turtle</a>
parser was updated to correct the collections syntax, allow '-' in
names and QNames and to add integer literals.  This parser now correctly
uses <code>raptor_generate_id</code> when a blank identifier name is
needed.</p>

<p>Completed parser feature support by adding <code>raptor_get_feature</code>,
<code>raptor_feature_from_uri</code>, and
<code>raptor_features_enumerate</code> to get values and enable
discovery of supported features at run time.
<code>raptor_set_feature</code> was changed to give return a success
value</p>

<p>Added a new method <code>raptor_get_mime_type</code> to get the
MIME type of the syntax for a parser</p>

<p><code>raptor_parse_uri_with_connection</code> (which is called by
<code>raptor_parse_uri</code>) now sets the HTTP <code>Accept:</code>
header to the MIME type of the parser in WWW requests using the new
<code>raptor_www_set_http_accept()</code>.
</p>


<h3><code>rapper</code> changes</h3>

<p>Added options <code>-f</code>/<code>--feature</code> for setting
features and <code>-g</code>/<code>--guess</code> for guessing syntax
from some content or identifiers.  See <a href="rapper.html">rapper(1)</a>
for all rapper options.</p>


<h3>Utility function changes</h3>

<p>Added <code>raptor_syntax_name_check</code> to check for valid
syntax language names.<br />
</p>

<p>Added <code>raptor_free_memory</code> to free memory returned by
raptor functions.</p>

<p>Added Unicode utility functions <code>raptor_unicode_char_to_utf8</code> and
<code>raptor_utf8_to_unicode_char</code>.</p>

<p>Exported URI string <code>raptor_xml_literal_datatype_uri_string</code>.</p>

<p>Deprecated <code>raptor_print_statement_detailed</code> always
intended to be internal.</p>


<h3>WWW Class changes</h3>

<p>Added support to set the HTTP <code>Accept:</code> header for curl
and libxml2 when retrieving HTTP content by the new
<code>raptor_www_set_http_accept</code> method.
</p>


<h3>New classes - Sequence and Stringbuffer</h3>

<p>Added a utility class <code>raptor_sequence</code> providing
simple sequences that can handle stacks and queues</p>

<p>Added a utility class <code>raptor_stringbuffer</code> 
for constructing strings from substrings appended or prepended.</p>



<h2 id="rel_older"><a name="rel_older">Raptor 0.9.0 - Raptor 1.2.0 Changes</a></h2>

<p>Release notes for 1.2.0 and earlier are in the
<a href="NEWS.html">NEWS page</a> or
<a href="ChangeLog">ChangeLog</a>
</p>



<hr />

<p>Copyright (C) 2003-2011 <a href="http://www.dajobe.org/">Dave Beckett</a><br />Copyright (C) 2003-2005 <a href="http://www.bristol.ac.uk/">University of Bristol</a></p>

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