KHTML_ELEMAT(3) Library Functions Manual KHTML_ELEMAT(3)

khtml_closeelem
close element contexts of kcgihtml

library “libkcgihtml”

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

enum kcgi_err
khtml_closeelem(struct khtmlreq *req, size_t nclose);

Closes nclose element scopes of req, initialised with khtml_open(3). Scopes are opened with khtml_attr(3), khtml_attrx(3), or khtml_elem(3). Scopes for “void” elements (self-closing, like KELEM_LINK) or KELEM_DOCTYPE close immediately and should not be explicitly closed.

If nclose is zero or greater than the number of open scopes, all scopes are closed.

Returns an enum kcgi_err indicating the error state.
Success (not an error).
Internal memory allocation failure.
The output connection has been terminated. For FastCGI connections, the current connection should be released with khttp_free(3) and parse loop reentered.
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.
Internal system error writing to the output stream.

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_HEAD);
khtml_elem(&req, KELEM_TITLE);
khtml_puts(&req, "Hello, world.");
khtml_closeelem(&req, 2); /* title, head */
khtml_elem(&req, KELEM_BODY);
khtml_elem(&req, KELEM_P);
khtml_puts(&req, "Hello, world");
khtml_closeelem(&req, 1); /* p */
khtml_elem(&req, KELEM_P);
khtml_puts(&req, "Another hello, world");
khtml_close(&req);

kcgihtml(3)

Written by Kristaps Dzonsons <kristaps@bsd.lv>.
March 26, 2020 OpenBSD 6.5