freebsd man page for xo_attr_h

LIBXO(3)						   BSD Library Functions Manual 						  LIBXO(3)

NAME
     xo_emit -- emit formatted output based on format string and arguments

LIBRARY
     library ``libxo''

SYNOPSIS
     #include <libxo/xo.h>

     int
     xo_attr(const char *name, const char *fmt, ...);

     int
     xo_attr_h(xo_handle_t *handle, const char *name, const char *fmt, ...);

     int
     xo_attr_hv(xo_handle_t *handle, const char *name, const char *fmt, va_list vap);

DESCRIPTION
     The xo_attr() function emits attributes for the XML output style.	The attribute value is recorded in the handle and is attached to the next
     field that is emitted via a xo_emit(3) call.

     The name parameter give the name of the attribute to be encoded.  The fmt parameter gives a printf-style format string used to format the
     value of the attribute using any remaining arguments, or the vap parameter as passed to xo_attr_hv().

	       EXAMPLE:
		 xo_attr("seconds", "%ld", (unsigned long) login_time);
		 struct tm *tmp = localtime(login_time);
		 strftime(buf, sizeof(buf), "%R", tmp);
		 xo_emit("Logged in at {:login-time}
", buf);
	       XML:
		   <login-time seconds="1408336270">00:14</login-time>

     Since attributes are only emitted in XML, their use should be limited to meta-data and additional or redundant representations of data
     already emitted in other form.

ADDITIONAL DOCUMENTATION
     Complete documentation can be found on github:

	   http://juniper.github.io/libxo/libxo-manual.html

     libxo lives on github as:

	   https://github.com/Juniper/libxo

     The latest release of libxo is available at:

	   https://github.com/Juniper/libxo/releases

SEE ALSO
     xo_emit(3)

HISTORY
     The libxo library was added in FreeBSD 11.0.

AUTHOR
     Phil Shafer

BSD
								   June 5, 2019 							       BSD