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<title>URI</title>
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<div class="refentry" lang="en">
<a name="redland-uri"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="redland-uri.top_of_page"></a>URI</span></h2>
<p>URI — URI class</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<a name="redland-uri.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">
typedef <a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a>;
<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a>* <a class="link" href="redland-uri.html#librdf-new-uri" title="librdf_new_uri ()">librdf_new_uri</a> (<a class="link" href="redland-world.html#librdf-world" title="librdf_world">librdf_world</a> *world,
unsigned char *uri_string);
<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a>* <a class="link" href="redland-uri.html#librdf-new-uri-from-uri" title="librdf_new_uri_from_uri ()">librdf_new_uri_from_uri</a> (<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *old_uri);
<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a>* <a class="link" href="redland-uri.html#librdf-new-uri-from-uri-local-name" title="librdf_new_uri_from_uri_local_name ()">librdf_new_uri_from_uri_local_name</a> (<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *old_uri,
unsigned char *local_name);
void <a class="link" href="redland-uri.html#librdf-free-uri" title="librdf_free_uri ()">librdf_free_uri</a> (<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *uri);
unsigned char* <a class="link" href="redland-uri.html#librdf-uri-as-string" title="librdf_uri_as_string ()">librdf_uri_as_string</a> (<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *uri);
unsigned char* <a class="link" href="redland-uri.html#librdf-uri-as-counted-string" title="librdf_uri_as_counted_string ()">librdf_uri_as_counted_string</a> (<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *uri,
size_t *len_p);
void <a class="link" href="redland-uri.html#librdf-uri-print" title="librdf_uri_print ()">librdf_uri_print</a> (<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *uri,
FILE *fh);
unsigned char* <a class="link" href="redland-uri.html#librdf-uri-to-string" title="librdf_uri_to_string ()">librdf_uri_to_string</a> (<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *uri);
unsigned char* <a class="link" href="redland-uri.html#librdf-uri-to-counted-string" title="librdf_uri_to_counted_string ()">librdf_uri_to_counted_string</a> (<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *uri,
size_t *len_p);
int <a class="link" href="redland-uri.html#librdf-uri-equals" title="librdf_uri_equals ()">librdf_uri_equals</a> (<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *first_uri,
<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *second_uri);
int <a class="link" href="redland-uri.html#librdf-uri-is-file-uri" title="librdf_uri_is_file_uri ()">librdf_uri_is_file_uri</a> (<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *uri);
const char* <a class="link" href="redland-uri.html#librdf-uri-to-filename" title="librdf_uri_to_filename ()">librdf_uri_to_filename</a> (<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *uri);
<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a>* <a class="link" href="redland-uri.html#librdf-new-uri-normalised-to-base" title="librdf_new_uri_normalised_to_base ()">librdf_new_uri_normalised_to_base</a> (unsigned char *uri_string,
<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *source_uri,
<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *base_uri);
<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a>* <a class="link" href="redland-uri.html#librdf-new-uri-relative-to-base" title="librdf_new_uri_relative_to_base ()">librdf_new_uri_relative_to_base</a> (<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *base_uri,
unsigned char *uri_string);
<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a>* <a class="link" href="redland-uri.html#librdf-new-uri-from-filename" title="librdf_new_uri_from_filename ()">librdf_new_uri_from_filename</a> (<a class="link" href="redland-world.html#librdf-world" title="librdf_world">librdf_world</a> *world,
const char *filename);
int <a class="link" href="redland-uri.html#librdf-uri-compare" title="librdf_uri_compare ()">librdf_uri_compare</a> (<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *uri1,
<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *uri2);
int (<a class="link" href="redland-uri.html#librdf-uri-filter-func" title="librdf_uri_filter_func ()">*librdf_uri_filter_func</a>) (void *user_data,
<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *uri);
</pre>
</div>
<div class="refsect1" lang="en">
<a name="redland-uri.description"></a><h2>Description</h2>
<p>
A class for absolute URIs and relative URI computation utility
functions. Only absolute URIs are provided, with no current access
to internals of URIs such as URI scheme, path, authority. Relative
URIs can be generated against some base or turned to and from local
filenames.
</p>
</div>
<div class="refsect1" lang="en">
<a name="redland-uri.details"></a><h2>Details</h2>
<div class="refsect2" lang="en">
<a name="librdf-uri"></a><h3>librdf_uri</h3>
<pre class="programlisting">typedef struct librdf_uri_s librdf_uri;
</pre>
<p>
Redland URI class.</p>
<p>
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="librdf-new-uri"></a><h3>librdf_new_uri ()</h3>
<pre class="programlisting"><a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a>* librdf_new_uri (<a class="link" href="redland-world.html#librdf-world" title="librdf_world">librdf_world</a> *world,
unsigned char *uri_string);</pre>
<p>
Constructor - create a new <a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri"><span class="type">librdf_uri</span></a> object from a URI string.
</p>
<p>
A new URI is constructed from a copy of the string. If the
string is a NULL pointer or empty (0 length) then the result is NULL.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>world</code></em> :</span></p></td>
<td> redland world object
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>uri_string</code></em> :</span></p></td>
<td> URI in string form
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> a new <a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri"><span class="type">librdf_uri</span></a> object or NULL on failure
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="librdf-new-uri-from-uri"></a><h3>librdf_new_uri_from_uri ()</h3>
<pre class="programlisting"><a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a>* librdf_new_uri_from_uri (<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *old_uri);</pre>
<p>
Copy constructor - create a new librdf_uri object from an existing librdf_uri object.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>old_uri</code></em> :</span></p></td>
<td> <a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri"><span class="type">librdf_uri</span></a> object
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> a new <a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri"><span class="type">librdf_uri</span></a> object or NULL on failure
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="librdf-new-uri-from-uri-local-name"></a><h3>librdf_new_uri_from_uri_local_name ()</h3>
<pre class="programlisting"><a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a>* librdf_new_uri_from_uri_local_name (<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *old_uri,
unsigned char *local_name);</pre>
<p>
Copy constructor - create a new librdf_uri object from an existing librdf_uri object and a local name.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>old_uri</code></em> :</span></p></td>
<td> <a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri"><span class="type">librdf_uri</span></a> object
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>local_name</code></em> :</span></p></td>
<td> local name to append to URI
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> a new <a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri"><span class="type">librdf_uri</span></a> object or NULL on failure
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="librdf-free-uri"></a><h3>librdf_free_uri ()</h3>
<pre class="programlisting">void librdf_free_uri (<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *uri);</pre>
<p>
Destructor - destroy a <a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri"><span class="type">librdf_uri</span></a> object.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>uri</code></em> :</span></p></td>
<td> <a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri"><span class="type">librdf_uri</span></a> object
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="librdf-uri-as-string"></a><h3>librdf_uri_as_string ()</h3>
<pre class="programlisting">unsigned char* librdf_uri_as_string (<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *uri);</pre>
<p>
Get a pointer to the string representation of the URI.
</p>
<p>
Returns a shared pointer to the URI string representation.
Note: does not allocate a new string so the caller must not free it.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>uri</code></em> :</span></p></td>
<td> <a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri"><span class="type">librdf_uri</span></a> object
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> string representation of URI
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="librdf-uri-as-counted-string"></a><h3>librdf_uri_as_counted_string ()</h3>
<pre class="programlisting">unsigned char* librdf_uri_as_counted_string (<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *uri,
size_t *len_p);</pre>
<p>
Get a pointer to the string representation of the URI with length.
</p>
<p>
Returns a shared pointer to the URI string representation.
Note: does not allocate a new string so the caller must not free it.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>uri</code></em> :</span></p></td>
<td> <a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri"><span class="type">librdf_uri</span></a> object
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>len_p</code></em> :</span></p></td>
<td> pointer to location to store length
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> string representation of URI
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="librdf-uri-print"></a><h3>librdf_uri_print ()</h3>
<pre class="programlisting">void librdf_uri_print (<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *uri,
FILE *fh);</pre>
<p>
Print the URI to the given file handle.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>uri</code></em> :</span></p></td>
<td> <a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri"><span class="type">librdf_uri</span></a> object
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>fh</code></em> :</span></p></td>
<td> file handle
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="librdf-uri-to-string"></a><h3>librdf_uri_to_string ()</h3>
<pre class="programlisting">unsigned char* librdf_uri_to_string (<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *uri);</pre>
<p>
Format the URI as a string.
</p>
<p>
Note: this method allocates a new string since this is a _to_ method
and the caller must free the resulting memory.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>uri</code></em> :</span></p></td>
<td> <a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri"><span class="type">librdf_uri</span></a> object
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> string representation of the URI or NULL on failure
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="librdf-uri-to-counted-string"></a><h3>librdf_uri_to_counted_string ()</h3>
<pre class="programlisting">unsigned char* librdf_uri_to_counted_string (<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *uri,
size_t *len_p);</pre>
<p>
Format the URI as a counted string.
</p>
<p>
Note: this method allocates a new string since this is a _to_ method
and the caller must free the resulting memory.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>uri</code></em> :</span></p></td>
<td> <a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri"><span class="type">librdf_uri</span></a> object
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>len_p</code></em> :</span></p></td>
<td> pointer to location to store length
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> string representation of the URI or NULL on failure
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="librdf-uri-equals"></a><h3>librdf_uri_equals ()</h3>
<pre class="programlisting">int librdf_uri_equals (<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *first_uri,
<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *second_uri);</pre>
<p>
Compare two librdf_uri objects for equality.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>first_uri</code></em> :</span></p></td>
<td> <a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri"><span class="type">librdf_uri</span></a> object 1
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>second_uri</code></em> :</span></p></td>
<td> <a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri"><span class="type">librdf_uri</span></a> object 2
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> non 0 if the objects are equal
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="librdf-uri-is-file-uri"></a><h3>librdf_uri_is_file_uri ()</h3>
<pre class="programlisting">int librdf_uri_is_file_uri (<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *uri);</pre>
<p>
Test if a URI points to a filename.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>uri</code></em> :</span></p></td>
<td> <a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri"><span class="type">librdf_uri</span></a> object
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> Non zero if the URI points to a file
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="librdf-uri-to-filename"></a><h3>librdf_uri_to_filename ()</h3>
<pre class="programlisting">const char* librdf_uri_to_filename (<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *uri);</pre>
<p>
Return pointer to filename of URI.
</p>
<p>
Returns a pointer to a newly allocated buffer that
the caller must free. This will fail if the URI
is not a file: URI. This can be checked with <a class="link" href="redland-uri.html#librdf-uri-is-file-uri" title="librdf_uri_is_file_uri ()"><span class="type">librdf_uri_is_file_uri</span></a></p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>uri</code></em> :</span></p></td>
<td> <a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri"><span class="type">librdf_uri</span></a> object
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> pointer to filename or NULL on failure
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="librdf-new-uri-normalised-to-base"></a><h3>librdf_new_uri_normalised_to_base ()</h3>
<pre class="programlisting"><a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a>* librdf_new_uri_normalised_to_base (unsigned char *uri_string,
<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *source_uri,
<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *base_uri);</pre>
<p>
Constructor - create a new <a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri"><span class="type">librdf_uri</span></a> object from a URI string stripped of the source URI, made relative to the base URI.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>uri_string</code></em> :</span></p></td>
<td> URI in string form
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>source_uri</code></em> :</span></p></td>
<td> source URI to remove
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>base_uri</code></em> :</span></p></td>
<td> base URI to add
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> a new <a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri"><span class="type">librdf_uri</span></a> object or NULL on failure
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="librdf-new-uri-relative-to-base"></a><h3>librdf_new_uri_relative_to_base ()</h3>
<pre class="programlisting"><a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a>* librdf_new_uri_relative_to_base (<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *base_uri,
unsigned char *uri_string);</pre>
<p>
Constructor - create a new <a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri"><span class="type">librdf_uri</span></a> object from a URI string relative to a base URI.
</p>
<p>
An empty uri_string or NULL is equivalent to
librdf_new_uri_from_uri(base_uri)</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>base_uri</code></em> :</span></p></td>
<td> absolute base URI
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>uri_string</code></em> :</span></p></td>
<td> relative URI string
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> a new <a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri"><span class="type">librdf_uri</span></a> object or NULL on failure
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="librdf-new-uri-from-filename"></a><h3>librdf_new_uri_from_filename ()</h3>
<pre class="programlisting"><a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a>* librdf_new_uri_from_filename (<a class="link" href="redland-world.html#librdf-world" title="librdf_world">librdf_world</a> *world,
const char *filename);</pre>
<p>
Constructor - create a new <a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri"><span class="type">librdf_uri</span></a> object from a filename.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>world</code></em> :</span></p></td>
<td> Redland <a class="link" href="redland-world.html#librdf-world" title="librdf_world"><span class="type">librdf_world</span></a> object
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>filename</code></em> :</span></p></td>
<td> filename
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> a new <a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri"><span class="type">librdf_uri</span></a> object or NULL on failure
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="librdf-uri-compare"></a><h3>librdf_uri_compare ()</h3>
<pre class="programlisting">int librdf_uri_compare (<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *uri1,
<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *uri2);</pre>
<p>
Compare two librdf_uri objects lexicographically.
</p>
<p>
A NULL URI is always less than (never equal to) a non-NULL URI.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>uri1</code></em> :</span></p></td>
<td> <a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri"><span class="type">librdf_uri</span></a> object 1 or NULL
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>uri2</code></em> :</span></p></td>
<td> <a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri"><span class="type">librdf_uri</span></a> object 2 or NULL
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> &lt;0 if <em class="parameter"><code>uri1</code></em> is less than <em class="parameter"><code>uri2</code></em>, 0 if equal, &gt;0 if <em class="parameter"><code>uri1</code></em> is greater than <em class="parameter"><code>uri2</code></em>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="librdf-uri-filter-func"></a><h3>librdf_uri_filter_func ()</h3>
<pre class="programlisting">int (*librdf_uri_filter_func) (void *user_data,
<a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri">librdf_uri</a> *uri);</pre>
<p>
Callback function for <a class="link" href="redland-parser.html#librdf-parser-set-uri-filter" title="librdf_parser_set_uri_filter ()"><code class="function">librdf_parser_set_uri_filter()</code></a></p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>user_data</code></em> :</span></p></td>
<td> user data
</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>uri</code></em> :</span></p></td>
<td> <a class="link" href="redland-uri.html#librdf-uri" title="librdf_uri"><span class="type">librdf_uri</span></a> URI to check
</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td> non-0 to filter the URI
</td>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
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