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>

     void
     xo_set_info(xo_handle_t *handle, xo_info_t *info, int count);

DESCRIPTION

     HTML data can include additional information in attributes that begin with "data-".  To enable this, three things must occur:

     First the application must build an array of xo_info_t structures, one per tag.  The array must be sorted by name, since libxo uses a binary
     search to find the entry that matches names from format instructions.

     The xo_info_t structure is defined in <libxo/xo.h>:

	       typedef struct xo_info_s {
		   const char *xi_name;    /* Name of the element */
		   const char *xi_type;    /* Type of field */
		   const char *xi_help;    /* Description of field */
	       } xo_info_t;

     Second, the application must inform libxo about this information using the xo_set_info() call.  Like other libxo calls, passing NULL for the
     handle tells libxo to use the default handle.

     If the count is -1, libxo will count the elements of info, but there must be an empty element at the end.	More typically, the number is
     known to the application:

	       xo_info_t info[] = {
		   { "in-stock", "number", "Number of items in stock" },
		   { "name", "string", "Name of the item" },
		   { "on-order", "number", "Number of items on order" },
		   { "sku", "string", "Stock Keeping Unit" },
		   { "sold", "number", "Number of items sold" },
	       };
	       int info_count = (sizeof(info) / sizeof(info[0]));
	       ...
	       xo_set_info(NULL, info, info_count);

     Third, the emission of info must be triggered with the XOF_INFO flag using either the xo_set_flags() function or the ``--libxo=info'' command
     line argument.

     The type and help values, if present, are emitted as the "data-type" and "data-help" attributes:

	     <div class="data" data-tag="sku" data-type="string"
		  data-help="Stock Keeping Unit">GRO-000-533</div>

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
								 December 4, 2014							       BSD