NAME

kxml_pop — close an element scope for kcgixml

LIBRARY

library “libkcgixml”

SYNOPSIS

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

enum kcgi_err
kxml_pop(struct kxmlreq *req);

DESCRIPTION

Closes a single element scope of req, initialised with kxml_open(3). Scopes are opened with kxml_push(3) or kxml_pushattrs(3).

It is an error to pop from an empty scope stack.

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.
KCGI_WRITER: There are no open scopes to pop.

EXAMPLES

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

const char *const elems[] =
  { "foo", "bar", "baz" };
khttp_head(r, kresps[KRESP_STATUS],
  "%s", khttps[KHTTP_200]);
khttp_head(r, kresps[KRESP_CONTENT_TYPE],
  "%s", kmimetypes[KMIME_TEXT_XML]);
khttp_body(r);
kxml_open(&req, r, elems, 3);
kxml_push(&req, 0); /* foo */
kxml_puts(&req, "Hello, world");
kxml_pop(&req);
kxml_push(&req, 1, "baz", "xyzzy"); /* bar */
kxml_puts(&req, "Hello, world");
kxml_pop(&req);
kxml_close(&req);

AUTHORS

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