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<?xml version="1.0" encoding="ISO-8859-1"?>
<!--
-
- This file is part of the OpenLink Software Virtuoso Open-Source (VOS)
- project.
-
- Copyright (C) 1998-2018 OpenLink Software
-
- This project is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the
- Free Software Foundation; only version 2 of the License, dated June 1991.
-
- This program is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License along
- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
-
-
-->
<refentry id="fn_dbg_printf">
<refmeta>
<refentrytitle>dbg_printf</refentrytitle>
<refmiscinfo>debug</refmiscinfo>
</refmeta>
<refnamediv>
<refname>dbg_printf</refname>
<refpurpose>print formatted output onto the system console</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis id="fsyn_dbg_printf">
<funcprototype id="fproto_dbg_printf">
<funcdef><function>dbg_printf</function></funcdef>
<paramdef>in <parameter>format</parameter> varchar</paramdef>
<paramdef>in <parameter>arg1</parameter> any</paramdef>
<paramdef><parameter>...</parameter></paramdef>
<paramdef>in <parameter>argn</parameter> any</paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1 id="desc_dbg_printf"><title>Description</title>
<para><function>dbg_printf</function> prints a variable number
(max. eight) of arguments to the system console of Virtuoso server,
each argument formatted in C <function>printf</function> style,
according to the format string specified in the first argument.</para>
</refsect1>
<refsect1 id="params_dbg_printf"><title>Parameters</title>
<refsect2><title>format</title>
<para>a C sprintf -style format <type>string</type></para>
</refsect2>
<refsect2><title>argn</title>
<para>The arguments to format and print in any type</para>
</refsect2>
</refsect1>
<refsect1 id="ret_dbg_printf"><title>Return Values</title>
<para>None</para>
</refsect1>
<refsect1 id="examples_dbg_printf"><title>Examples</title>
<example id="ex_dbg_printf_1"><title>Simple example</title>
<para>The frammitz just zilched!</para>
<screen>
if (frammitz_status 0)
{
dbg_printf ('Error: Frammitz status: %d.\nProgram terminated',
frammitz_status);
signal ('42666', 'Frammitz zilched');
}
</screen>
<para>Hitting these lines would cause something like this in a client:</para>
<screen>*** Error 42666: [Virtuoso Driver][Virtuoso Server]Frammitz zilched at line 84 (84) of Top-Level: zappi()
</screen>
<para>The console output would look like this:</para>
<screen>Error: Frammitz status: 2.
Program terminated
</screen>
</example>
</refsect1>
<refsect1 id="seealso_dbg_printf"><title>See Also</title>
<para><link linkend="fn_sprintf">sprintf</link></para>
</refsect1>
</refentry>
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