KHTML_ELEMAT(3)

NAME
khtml_elemat - get element stack depth of kcgihtml

LIBRARY
libkcgihtml

SYNOPSIS
#include <sys/types.h>
#include <stdarg.h>
#include <stdint.h>
#include <kcgi.h>
#include <kcgihtml.h>
size_t
khtml_elemat(const struct khtmlreq *req);

DESCRIPTION
Gets the current depth of the element stack of req, initialised with khtml_open(3). This is usually used with khtml_closeto(3).

If called before opening any element contexts (i.e., a depth of zero), a subsequent khtml_closeto(3) will close all open scopes.

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);
    pos = khtml_elemat(&req); /* save at html */
    khtml_elem(&req, KELEM_HEAD);
    khtml_elem(&req, KELEM_TITLE);
    khtml_puts(&req, "Hello, world.");
    khtml_closeto(&req, pos); /* to html */
    khtml_closeelem(&req, 1); /* head */
    khtml_elem(&req, KELEM_BODY);
    khtml_puts(&req, "Hello, world");
    khtml_close(&req);

SEE ALSO
kcgihtml(3)

STANDARDS
The referenced HTML5 standard is HTML5.2: https://www.w3.org/TR/html52.

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

CAVEATS
If called in a scope that's subsequently closed, then a new scope reopened and filled in, a corresponding khtml_closeto(3) will unwind the stack to the new scope. In other words this does not identify a savepoint: it's merely the scope depth.