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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>prompt: libuser Reference Manual</title> <meta name="generator" content="DocBook XSL Stylesheets V1.78.1"> <link rel="home" href="index.html" title="libuser Reference Manual"> <link rel="up" href="ch01.html" title="libuser"> <link rel="prev" href="libuser-error.html" title="error"> <link rel="next" href="libuser-user.html" title="user"> <meta name="generator" content="GTK-Doc V1.24 (XML mode)"> <link rel="stylesheet" href="style.css" type="text/css"> </head> <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> <table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="5"><tr valign="middle"> <td width="100%" align="left" class="shortcuts"> <a href="#" class="shortcut">Top</a><span id="nav_description"> <span class="dim">|</span> <a href="#libuser-prompt.description" class="shortcut">Description</a></span> </td> <td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td> <td><a accesskey="u" href="ch01.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td> <td><a accesskey="p" href="libuser-error.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td> <td><a accesskey="n" href="libuser-user.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td> </tr></table> <div class="refentry"> <a name="libuser-prompt"></a><div class="titlepage"></div> <div class="refnamediv"><table width="100%"><tr> <td valign="top"> <h2><span class="refentrytitle"><a name="libuser-prompt.top_of_page"></a>prompt</span></h2> <p>prompt — Sample prompter functions for use with the libuser library.</p> </td> <td class="gallery_image" valign="top" align="right"></td> </tr></table></div> <div class="refsect1"> <a name="libuser-prompt.functions"></a><h2>Functions</h2> <div class="informaltable"><table width="100%" border="0"> <colgroup> <col width="150px" class="functions_return"> <col class="functions_name"> </colgroup> <tbody> <tr> <td class="function_type"> <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> </td> <td class="function_name"> <a class="link" href="libuser-prompt.html#lu-prompt-console" title="lu_prompt_console ()">lu_prompt_console</a> <span class="c_punctuation">()</span> </td> </tr> <tr> <td class="function_type"> <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> </td> <td class="function_name"> <a class="link" href="libuser-prompt.html#lu-prompt-console-quiet" title="lu_prompt_console_quiet ()">lu_prompt_console_quiet</a> <span class="c_punctuation">()</span> </td> </tr> </tbody> </table></div> </div> <div class="refsect1"> <a name="libuser-prompt.other"></a><h2>Types and Values</h2> <div class="informaltable"><table width="100%" border="0"> <colgroup> <col width="150px" class="name"> <col class="description"> </colgroup> <tbody><tr> <td class="datatype_keyword">struct</td> <td class="function_name"><a class="link" href="libuser-prompt.html#lu-prompt" title="struct lu_prompt">lu_prompt</a></td> </tr></tbody> </table></div> </div> <div class="refsect1"> <a name="libuser-prompt.includes"></a><h2>Includes</h2> <pre class="synopsis">#include <libuser/prompt.h> </pre> </div> <div class="refsect1"> <a name="libuser-prompt.description"></a><h2>Description</h2> <p>prompt.h declares two predefined prompter functions which applications can use instead of providing their own. These should suffice for most command-line applications. Authors of graphical applications are encouraged to supply graphical implementations.</p> </div> <div class="refsect1"> <a name="libuser-prompt.functions_details"></a><h2>Functions</h2> <div class="refsect2"> <a name="lu-prompt-console"></a><h3>lu_prompt_console ()</h3> <pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> lu_prompt_console (<em class="parameter"><code><span class="type">struct lu_prompt</span> *prompts</code></em>, <em class="parameter"><code><span class="type">int</span> count</code></em>, <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> callback_data</code></em>, <em class="parameter"><code><span class="type">struct lu_error</span> **error</code></em>);</pre> <p>Prompts the user using a text console.</p> <div class="refsect3"> <a name="id-1.2.6.7.2.5"></a><h4>Parameters</h4> <div class="informaltable"><table width="100%" border="0"> <colgroup> <col width="150px" class="parameters_name"> <col class="parameters_description"> <col width="200px" class="parameters_annotations"> </colgroup> <tbody> <tr> <td class="parameter_name"><p>prompts</p></td> <td class="parameter_description"><p>An array of <a class="link" href="libuser-prompt.html#lu-prompt" title="struct lu_prompt"><span class="type">lu_prompt</span></a> structures.</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>count</p></td> <td class="parameter_description"><p>The number of elements in the <em class="parameter"><code>prompts</code></em> array.</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>callback_data</p></td> <td class="parameter_description"><p>Ignored.</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>error</p></td> <td class="parameter_description"><p>The location to store error information in the event of an error.</p></td> <td class="parameter_annotations"> </td> </tr> </tbody> </table></div> </div> <div class="refsect3"> <a name="id-1.2.6.7.2.6"></a><h4>Returns</h4> <p> A <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> indicating success or failure.</p> </div> </div> <hr> <div class="refsect2"> <a name="lu-prompt-console-quiet"></a><h3>lu_prompt_console_quiet ()</h3> <pre class="programlisting"><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> lu_prompt_console_quiet (<em class="parameter"><code><span class="type">struct lu_prompt</span> *prompts</code></em>, <em class="parameter"><code><span class="type">int</span> count</code></em>, <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> callback_data</code></em>, <em class="parameter"><code><span class="type">struct lu_error</span> **error</code></em>);</pre> <p>Prompts the user using a text console. Unlike <a class="link" href="libuser-prompt.html#lu-prompt-console" title="lu_prompt_console ()"><code class="function">lu_prompt_console()</code></a>, this function will not prompt users for a question for which the calling application or module supplies a default, and will simply return the default.</p> <div class="refsect3"> <a name="id-1.2.6.7.3.5"></a><h4>Parameters</h4> <div class="informaltable"><table width="100%" border="0"> <colgroup> <col width="150px" class="parameters_name"> <col class="parameters_description"> <col width="200px" class="parameters_annotations"> </colgroup> <tbody> <tr> <td class="parameter_name"><p>prompts</p></td> <td class="parameter_description"><p>An array of <a class="link" href="libuser-prompt.html#lu-prompt" title="struct lu_prompt"><span class="type">lu_prompt</span></a> structures.</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>count</p></td> <td class="parameter_description"><p>The number of elements in the <em class="parameter"><code>prompts</code></em> array.</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>callback_data</p></td> <td class="parameter_description"><p>Ignored.</p></td> <td class="parameter_annotations"> </td> </tr> <tr> <td class="parameter_name"><p>error</p></td> <td class="parameter_description"><p>The location to store error information in the event of an error.</p></td> <td class="parameter_annotations"> </td> </tr> </tbody> </table></div> </div> <div class="refsect3"> <a name="id-1.2.6.7.3.6"></a><h4>Returns</h4> <p> A <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> indicating success or failure.</p> </div> </div> </div> <div class="refsect1"> <a name="libuser-prompt.other_details"></a><h2>Types and Values</h2> <div class="refsect2"> <a name="lu-prompt"></a><h3>struct lu_prompt</h3> <pre class="programlisting">struct lu_prompt { const char *key; const char *prompt; const char *domain; gboolean visible; const char *default_value; char *value; void (*free_value) (void *); }; </pre> <p>The type of data passed to a prompter function. The library uses these when it needs to prompt the user for information.</p> <div class="refsect3"> <a name="id-1.2.6.8.2.5"></a><h4>Members</h4> <div class="informaltable"><table width="100%" border="0"> <colgroup> <col width="300px" class="struct_members_name"> <col class="struct_members_description"> <col width="200px" class="struct_members_annotations"> </colgroup> <tbody> <tr> <td class="struct_member_name"><p>const <span class="type">char</span> *<em class="structfield"><code><a name="lu-prompt.key"></a>key</code></em>;</p></td> <td class="struct_member_description"><p>An invariant string of the form "module/name", which describes the information being prompted for. The calling application may use this value as an index into a hash table used to cache answers to particular queries.</p></td> <td class="struct_member_annotations"> </td> </tr> <tr> <td class="struct_member_name"><p>const <span class="type">char</span> *<em class="structfield"><code><a name="lu-prompt.prompt"></a>prompt</code></em>;</p></td> <td class="struct_member_description"><p>The text of a prompt to display. This *may* be translated for the current locale by a module.</p></td> <td class="struct_member_annotations"> </td> </tr> <tr> <td class="struct_member_name"><p>const <span class="type">char</span> *<em class="structfield"><code><a name="lu-prompt.domain"></a>domain</code></em>;</p></td> <td class="struct_member_description"><p>The text domain which contains this prompt's translations. This may be the default libuser domain, or a module-specific text domain which the module which provided this prompt bound for gettext when it was loaded.</p></td> <td class="struct_member_annotations"> </td> </tr> <tr> <td class="struct_member_name"><p><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gboolean"><span class="type">gboolean</span></a> <em class="structfield"><code><a name="lu-prompt.visible"></a>visible</code></em>;</p></td> <td class="struct_member_description"><p>Whether or not the user's response should be echoed to the screen (in a console app) or visible in an entry field (in a GUI app).</p></td> <td class="struct_member_annotations"> </td> </tr> <tr> <td class="struct_member_name"><p>const <span class="type">char</span> *<em class="structfield"><code><a name="lu-prompt.default-value"></a>default_value</code></em>;</p></td> <td class="struct_member_description"><p>A default value, given as a string. This will only contain a value if the string is visible, but the reverse won't necessarily be true (default_value -> visible).</p></td> <td class="struct_member_annotations"> </td> </tr> <tr> <td class="struct_member_name"><p><span class="type">char</span> *<em class="structfield"><code><a name="lu-prompt.value"></a>value</code></em>;</p></td> <td class="struct_member_description"><p>The user's response. This is set by the prompter function.</p></td> <td class="struct_member_annotations"> </td> </tr> <tr> <td class="struct_member_name"><p><em class="structfield"><code><a name="lu-prompt.free-value"></a>free_value</code></em> ()</p></td> <td class="struct_member_description"><p>A function which can free the user's response. This is set by the prompter function. If NULL, the response will not be freed, ever.</p></td> <td class="struct_member_annotations"> </td> </tr> </tbody> </table></div> </div> </div> </div> </div> <div class="footer"> <hr>Generated by GTK-Doc V1.24</div> </body> </html>