NAME

khtml_printf —

put variable content for kcgihtml

LIBRARY

library “libkcgihtml”

SYNOPSIS

#include <sys/types.h>
#include <stdarg.h>
#include <stdint.h>
#include <kcgi.h>
#include <kcgihtml.h>

enum kcgi_err
khtml_printf(struct khtmlreq *req, const char *fmt, ...);

DESCRIPTION

Writes output according to the given fmt to a context req initialised with khtml_open(3). The format is as for printf(3).

If fmt is NULL, it does nothing and returns success. All of the content is HTML escaped, for example, the left-angle bracket “<” is rendered as “<”.

RETURN VALUES

Returns an enum kcgi_err indicating the error state.

KCGI_OK: Success (not an error).
KCGI_ENOMEM: Internal memory allocation failure.
KCGI_HUP: The output connection has been terminated. For FastCGI connections, the current connection should be released with khttp_free(3) and parse loop reentered.
KCGI_FORM: The connection is still expecting headers with khttp_head(3). Indicates that khttp_body(3) did not return with success or was not invoked. For FastCGI connections, the current connection should be released with khttp_free(3) and parse loop reentered.
KCGI_SYSTEM: Internal system error writing to the output stream.

EXAMPLES

The following outputs a simple HTML page. It assumes r is a struct kreq pointer. For brevity, it does not do any error checking.

khttp_head(r, kresps[KRESP_STATUS],
  "%s", khttps[KHTTP_200]);
khttp_head(r, kresps[KRESP_CONTENT_TYPE],
  "%s", kmimetypes[KMIME_TEXT_HTML]);
khttp_body(r);
khtml_open(&req, r, 0);
khtml_elem(&req, KELEM_DOCTYPE);
khtml_elem(&req, KELEM_HTML);
khtml_elem(&req, KELEM_BODY);
khtml_elem(&req, KELEM_P);
khtml_printf(&req, "%s", "Hello, world.");
khtml_close(&req);

STANDARDS

The referenced HTML5 standard is HTML5.2.

AUTHORS

Written by Kristaps Dzonsons <kristaps@bsd.lv>.