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<a href="#id3096448" class="shortcut">Description</a></nobr></td></tr>
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<div class="refentry" lang="en">
<a name="glib-Automatic-String-Completion"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2>
<a name="id3096127"></a><span class="refentrytitle">Automatic String Completion</span>
</h2>
<p>Automatic String Completion — support for automatic completion using a group of target strings.</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<pre class="synopsis">
#include <glib.h>
<a href="glib-Automatic-String-Completion.html#GCompletion">GCompletion</a>;
<a href="glib-Automatic-String-Completion.html#GCompletion">GCompletion</a>* <a href="glib-Automatic-String-Completion.html#g-completion-new">g_completion_new</a> (<a href="glib-Automatic-String-Completion.html#GCompletionFunc">GCompletionFunc</a> func);
<a href="glib-Basic-Types.html#gchar">gchar</a>* (<a href="glib-Automatic-String-Completion.html#GCompletionFunc">*GCompletionFunc</a>) (<a href="glib-Basic-Types.html#gpointer">gpointer</a> );
void <a href="glib-Automatic-String-Completion.html#g-completion-add-items">g_completion_add_items</a> (<a href="glib-Automatic-String-Completion.html#GCompletion">GCompletion</a> *cmp,
<a href="glib-Doubly-Linked-Lists.html#GList">GList</a> *items);
void <a href="glib-Automatic-String-Completion.html#g-completion-remove-items">g_completion_remove_items</a> (<a href="glib-Automatic-String-Completion.html#GCompletion">GCompletion</a> *cmp,
<a href="glib-Doubly-Linked-Lists.html#GList">GList</a> *items);
void <a href="glib-Automatic-String-Completion.html#g-completion-clear-items">g_completion_clear_items</a> (<a href="glib-Automatic-String-Completion.html#GCompletion">GCompletion</a> *cmp);
<a href="glib-Doubly-Linked-Lists.html#GList">GList</a>* <a href="glib-Automatic-String-Completion.html#g-completion-complete">g_completion_complete</a> (<a href="glib-Automatic-String-Completion.html#GCompletion">GCompletion</a> *cmp,
const <a href="glib-Basic-Types.html#gchar">gchar</a> *prefix,
<a href="glib-Basic-Types.html#gchar">gchar</a> **new_prefix);
<a href="glib-Doubly-Linked-Lists.html#GList">GList</a>* <a href="glib-Automatic-String-Completion.html#g-completion-complete-utf8">g_completion_complete_utf8</a> (<a href="glib-Automatic-String-Completion.html#GCompletion">GCompletion</a> *cmp,
const <a href="glib-Basic-Types.html#gchar">gchar</a> *prefix,
<a href="glib-Basic-Types.html#gchar">gchar</a> **new_prefix);
void <a href="glib-Automatic-String-Completion.html#g-completion-set-compare">g_completion_set_compare</a> (<a href="glib-Automatic-String-Completion.html#GCompletion">GCompletion</a> *cmp,
<a href="glib-Automatic-String-Completion.html#GCompletionStrncmpFunc">GCompletionStrncmpFunc</a> strncmp_func);
<a href="glib-Basic-Types.html#gint">gint</a> (<a href="glib-Automatic-String-Completion.html#GCompletionStrncmpFunc">*GCompletionStrncmpFunc</a>) (const <a href="glib-Basic-Types.html#gchar">gchar</a> *s1,
const <a href="glib-Basic-Types.html#gchar">gchar</a> *s2,
<a href="glib-Basic-Types.html#gsize">gsize</a> n);
void <a href="glib-Automatic-String-Completion.html#g-completion-free">g_completion_free</a> (<a href="glib-Automatic-String-Completion.html#GCompletion">GCompletion</a> *cmp);
</pre>
</div>
<div class="refsect1" lang="en">
<a name="id3096448"></a><h2>Description</h2>
<p>
<a href="glib-Automatic-String-Completion.html#GCompletion"><span class="type">GCompletion</span></a> provides support for automatic completion of a string using
any group of target strings. It is typically used for file name completion
as is common in many UNIX shells.
</p>
<p>
A <a href="glib-Automatic-String-Completion.html#GCompletion"><span class="type">GCompletion</span></a> is created using <a href="glib-Automatic-String-Completion.html#g-completion-new"><code class="function">g_completion_new()</code></a>.
Target items are added and removed with
<a href="glib-Automatic-String-Completion.html#g-completion-add-items"><code class="function">g_completion_add_items()</code></a>, <a href="glib-Automatic-String-Completion.html#g-completion-remove-items"><code class="function">g_completion_remove_items()</code></a> and
<a href="glib-Automatic-String-Completion.html#g-completion-clear-items"><code class="function">g_completion_clear_items()</code></a>.
A completion attempt is requested with <a href="glib-Automatic-String-Completion.html#g-completion-complete"><code class="function">g_completion_complete()</code></a> or
<a href="glib-Automatic-String-Completion.html#g-completion-complete-utf8"><code class="function">g_completion_complete_utf8()</code></a>.
When no longer needed, the <a href="glib-Automatic-String-Completion.html#GCompletion"><span class="type">GCompletion</span></a> is freed with <a href="glib-Automatic-String-Completion.html#g-completion-free"><code class="function">g_completion_free()</code></a>.
</p>
<p>
Items in the completion can be simple strings (e.g. filenames),
or pointers to arbitrary data structures. If data structures are used
you must provide a <a href="glib-Automatic-String-Completion.html#GCompletionFunc"><span class="type">GCompletionFunc</span></a> in <a href="glib-Automatic-String-Completion.html#g-completion-new"><code class="function">g_completion_new()</code></a>,
which retrieves the item's string from the data structure.
You can change the way in which strings are compared by setting
a different <a href="glib-Automatic-String-Completion.html#GCompletionStrncmpFunc"><span class="type">GCompletionStrncmpFunc</span></a> in <a href="glib-Automatic-String-Completion.html#g-completion-set-compare"><code class="function">g_completion_set_compare()</code></a>.
</p>
</div>
<div class="refsect1" lang="en">
<a name="id3096616"></a><h2>Details</h2>
<div class="refsect2" lang="en">
<a name="id3096626"></a><h3>
<a name="GCompletion"></a>GCompletion</h3>
<a class="indexterm" name="id3096639"></a><pre class="programlisting">typedef struct {
GList* items;
GCompletionFunc func;
gchar* prefix;
GList* cache;
GCompletionStrncmpFunc strncmp_func;
} GCompletion;
</pre>
<p>
The data structure used for automatic completion.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td>
<span class="term"><a href="glib-Doubly-Linked-Lists.html#GList">GList</a> *<em class="structfield"><code>items</code></em>;</span></td>
<td>list of target items (strings or data structures).
</td>
</tr>
<tr>
<td>
<span class="term"><a href="glib-Automatic-String-Completion.html#GCompletionFunc">GCompletionFunc</a> <em class="structfield"><code>func</code></em>;</span></td>
<td>function which is called to get the string associated with a target
item. It is <a href="glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if the target items are strings.
</td>
</tr>
<tr>
<td>
<span class="term"><a href="glib-Basic-Types.html#gchar">gchar</a> *<em class="structfield"><code>prefix</code></em>;</span></td>
<td>the last prefix passed to <a href="glib-Automatic-String-Completion.html#g-completion-complete"><code class="function">g_completion_complete()</code></a> or
<a href="glib-Automatic-String-Completion.html#g-completion-complete-utf8"><code class="function">g_completion_complete_utf8()</code></a>.
</td>
</tr>
<tr>
<td>
<span class="term"><a href="glib-Doubly-Linked-Lists.html#GList">GList</a> *<em class="structfield"><code>cache</code></em>;</span></td>
<td>the list of items which begin with <em class="parameter"><code>prefix</code></em>.
</td>
</tr>
<tr>
<td>
<span class="term"><a href="glib-Automatic-String-Completion.html#GCompletionStrncmpFunc">GCompletionStrncmpFunc</a> <em class="structfield"><code>strncmp_func</code></em>;</span></td>
<td>The function to use when comparing strings.
Use <a href="glib-Automatic-String-Completion.html#g-completion-set-compare"><code class="function">g_completion_set_compare()</code></a> to modify this function.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3096817"></a><h3>
<a name="g-completion-new"></a>g_completion_new ()</h3>
<a class="indexterm" name="id3096830"></a><pre class="programlisting"><a href="glib-Automatic-String-Completion.html#GCompletion">GCompletion</a>* g_completion_new (<a href="glib-Automatic-String-Completion.html#GCompletionFunc">GCompletionFunc</a> func);</pre>
<p>
Creates a new <a href="glib-Automatic-String-Completion.html#GCompletion"><span class="type">GCompletion</span></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td>
<span class="term"><em class="parameter"><code>func</code></em> :</span></td>
<td>the function to be called to return the string representing an item
in the <a href="glib-Automatic-String-Completion.html#GCompletion"><span class="type">GCompletion</span></a>, or <a href="glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if strings are going to be used as the
<a href="glib-Automatic-String-Completion.html#GCompletion"><span class="type">GCompletion</span></a> items.
</td>
</tr>
<tr>
<td>
<span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td>the new <a href="glib-Automatic-String-Completion.html#GCompletion"><span class="type">GCompletion</span></a>.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3096930"></a><h3>
<a name="GCompletionFunc"></a>GCompletionFunc ()</h3>
<a class="indexterm" name="id3096943"></a><pre class="programlisting"><a href="glib-Basic-Types.html#gchar">gchar</a>* (*GCompletionFunc) (<a href="glib-Basic-Types.html#gpointer">gpointer</a> );</pre>
<p>
Specifies the type of the function passed to <a href="glib-Automatic-String-Completion.html#g-completion-new"><code class="function">g_completion_new()</code></a>.
It should return the string corresponding to the given target item.
This is used when you use data structures as <a href="glib-Automatic-String-Completion.html#GCompletion"><span class="type">GCompletion</span></a> items.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td>
<span class="term"><em class="parameter"><code>Param1</code></em> :</span></td>
<td>the completion item.
</td>
</tr>
<tr>
<td>
<span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td>the string corresponding to the item.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3097022"></a><h3>
<a name="g-completion-add-items"></a>g_completion_add_items ()</h3>
<a class="indexterm" name="id3097035"></a><pre class="programlisting">void g_completion_add_items (<a href="glib-Automatic-String-Completion.html#GCompletion">GCompletion</a> *cmp,
<a href="glib-Doubly-Linked-Lists.html#GList">GList</a> *items);</pre>
<p>
Adds items to the <a href="glib-Automatic-String-Completion.html#GCompletion"><span class="type">GCompletion</span></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td>
<span class="term"><em class="parameter"><code>cmp</code></em> :</span></td>
<td>the <a href="glib-Automatic-String-Completion.html#GCompletion"><span class="type">GCompletion</span></a>.
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>items</code></em> :</span></td>
<td>the list of items to add.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3097119"></a><h3>
<a name="g-completion-remove-items"></a>g_completion_remove_items ()</h3>
<a class="indexterm" name="id3097133"></a><pre class="programlisting">void g_completion_remove_items (<a href="glib-Automatic-String-Completion.html#GCompletion">GCompletion</a> *cmp,
<a href="glib-Doubly-Linked-Lists.html#GList">GList</a> *items);</pre>
<p>
Removes items from a <a href="glib-Automatic-String-Completion.html#GCompletion"><span class="type">GCompletion</span></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td>
<span class="term"><em class="parameter"><code>cmp</code></em> :</span></td>
<td>the <a href="glib-Automatic-String-Completion.html#GCompletion"><span class="type">GCompletion</span></a>.
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>items</code></em> :</span></td>
<td>the items to remove.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3097216"></a><h3>
<a name="g-completion-clear-items"></a>g_completion_clear_items ()</h3>
<a class="indexterm" name="id3097229"></a><pre class="programlisting">void g_completion_clear_items (<a href="glib-Automatic-String-Completion.html#GCompletion">GCompletion</a> *cmp);</pre>
<p>
Removes all items from the <a href="glib-Automatic-String-Completion.html#GCompletion"><span class="type">GCompletion</span></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td>
<span class="term"><em class="parameter"><code>cmp</code></em> :</span></td>
<td>the <a href="glib-Automatic-String-Completion.html#GCompletion"><span class="type">GCompletion</span></a>.
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3097292"></a><h3>
<a name="g-completion-complete"></a>g_completion_complete ()</h3>
<a class="indexterm" name="id3097305"></a><pre class="programlisting"><a href="glib-Doubly-Linked-Lists.html#GList">GList</a>* g_completion_complete (<a href="glib-Automatic-String-Completion.html#GCompletion">GCompletion</a> *cmp,
const <a href="glib-Basic-Types.html#gchar">gchar</a> *prefix,
<a href="glib-Basic-Types.html#gchar">gchar</a> **new_prefix);</pre>
<p>
Attempts to complete the string <em class="parameter"><code>prefix</code></em> using the <a href="glib-Automatic-String-Completion.html#GCompletion"><span class="type">GCompletion</span></a> target items.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td>
<span class="term"><em class="parameter"><code>cmp</code></em> :</span></td>
<td>the <a href="glib-Automatic-String-Completion.html#GCompletion"><span class="type">GCompletion</span></a>.
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>prefix</code></em> :</span></td>
<td>the prefix string, typically typed by the user, which is compared
with each of the items.
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>new_prefix</code></em> :</span></td>
<td>if non-<a href="glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>, returns the longest prefix which is common to all
items that matched <em class="parameter"><code>prefix</code></em>, or <a href="glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if no items matched <em class="parameter"><code>prefix</code></em>.
This string should be freed when no longer needed.
</td>
</tr>
<tr>
<td>
<span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td>the list of items whose strings begin with <em class="parameter"><code>prefix</code></em>. This should
not be changed.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3097470"></a><h3>
<a name="g-completion-complete-utf8"></a>g_completion_complete_utf8 ()</h3>
<a class="indexterm" name="id3097486"></a><pre class="programlisting"><a href="glib-Doubly-Linked-Lists.html#GList">GList</a>* g_completion_complete_utf8 (<a href="glib-Automatic-String-Completion.html#GCompletion">GCompletion</a> *cmp,
const <a href="glib-Basic-Types.html#gchar">gchar</a> *prefix,
<a href="glib-Basic-Types.html#gchar">gchar</a> **new_prefix);</pre>
<p>
Attempts to complete the string <em class="parameter"><code>prefix</code></em> using the <a href="glib-Automatic-String-Completion.html#GCompletion"><span class="type">GCompletion</span></a> target items.
In contrast to <a href="glib-Automatic-String-Completion.html#g-completion-complete"><code class="function">g_completion_complete()</code></a>, this function returns the largest common
prefix that is a valid UTF-8 string, omitting a possible common partial
character.
</p>
<p>
You should use this function instead of <a href="glib-Automatic-String-Completion.html#g-completion-complete"><code class="function">g_completion_complete()</code></a> if your
items are UTF-8 strings.</p>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td>
<span class="term"><em class="parameter"><code>cmp</code></em> :</span></td>
<td> the <a href="glib-Automatic-String-Completion.html#GCompletion"><span class="type">GCompletion</span></a>
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>prefix</code></em> :</span></td>
<td> the prefix string, typically used by the user, which is compared
with each of the items
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>new_prefix</code></em> :</span></td>
<td> if non-<a href="glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>, returns the longest prefix which is common to all
items that matched <em class="parameter"><code>prefix</code></em>, or <a href="glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if no items matched <em class="parameter"><code>prefix</code></em>.
This string should be freed when no longer needed.
</td>
</tr>
<tr>
<td>
<span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td> the list of items whose strings begin with <em class="parameter"><code>prefix</code></em>. This should
not be changed.
</td>
</tr>
</tbody>
</table></div>
<p>Since 2.4
</p>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3097687"></a><h3>
<a name="g-completion-set-compare"></a>g_completion_set_compare ()</h3>
<a class="indexterm" name="id3097701"></a><pre class="programlisting">void g_completion_set_compare (<a href="glib-Automatic-String-Completion.html#GCompletion">GCompletion</a> *cmp,
<a href="glib-Automatic-String-Completion.html#GCompletionStrncmpFunc">GCompletionStrncmpFunc</a> strncmp_func);</pre>
<p>
Sets the function to use for string comparisons. The default
string comparison function is <code class="function">strncmp()</code>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td>
<span class="term"><em class="parameter"><code>cmp</code></em> :</span></td>
<td>a <a href="glib-Automatic-String-Completion.html#GCompletion"><span class="type">GCompletion</span></a>.
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>strncmp_func</code></em> :</span></td>
<td>the string comparison function.
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<a name="id3097790"></a><h3>
<a name="GCompletionStrncmpFunc"></a>GCompletionStrncmpFunc ()</h3>
<a class="indexterm" name="id3097804"></a><pre class="programlisting"><a href="glib-Basic-Types.html#gint">gint</a> (*GCompletionStrncmpFunc) (const <a href="glib-Basic-Types.html#gchar">gchar</a> *s1,
const <a href="glib-Basic-Types.html#gchar">gchar</a> *s2,
<a href="glib-Basic-Types.html#gsize">gsize</a> n);</pre>
<p>
Specifies the type of the function passed to <a href="glib-Automatic-String-Completion.html#g-completion-set-compare"><code class="function">g_completion_set_compare()</code></a>.
This is used when you use strings as <a href="glib-Automatic-String-Completion.html#GCompletion"><span class="type">GCompletion</span></a> items.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td>
<span class="term"><em class="parameter"><code>s1</code></em> :</span></td>
<td>string to compare with <em class="parameter"><code>s2</code></em>.
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>s2</code></em> :</span></td>
<td>string to compare with <em class="parameter"><code>s1</code></em>.
</td>
</tr>
<tr>
<td>
<span class="term"><em class="parameter"><code>n</code></em> :</span></td>
<td>maximal number of bytes to compare.
</td>
</tr>
<tr>
<td>
<span class="term"><span class="emphasis"><em>Returns</em></span> :</span></td>
<td>an integer less than, equal to, or greater than zero if the
first <em class="parameter"><code>n</code></em> bytes of <em class="parameter"><code>s1</code></em> is found, respectively, to be less than, to match,
or to be greater than the first <em class="parameter"><code>n</code></em> bytes of <em class="parameter"><code>s2</code></em>.
</td>
</tr>
</tbody>
</table></div>
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<hr>
<div class="refsect2" lang="en">
<a name="id3097960"></a><h3>
<a name="g-completion-free"></a>g_completion_free ()</h3>
<a class="indexterm" name="id3097974"></a><pre class="programlisting">void g_completion_free (<a href="glib-Automatic-String-Completion.html#GCompletion">GCompletion</a> *cmp);</pre>
<p>
Frees all memory used by the <a href="glib-Automatic-String-Completion.html#GCompletion"><span class="type">GCompletion</span></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td>
<span class="term"><em class="parameter"><code>cmp</code></em> :</span></td>
<td>the <a href="glib-Automatic-String-Completion.html#GCompletion"><span class="type">GCompletion</span></a>.
</td>
</tr></tbody>
</table></div>
</div>
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