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Man Pages
KXML_PROLOGUE(3) FreeBSD Library Functions Manual KXML_PROLOGUE(3)

kxml_prologue
put XML prologue for kcgixml

library “libkcgixml”

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

enum kcgi_err
kxml_prologue(struct kxmlreq *req);

Writes the standard XML prologue to a context req initialised with kxml_open(3). The prologue used is <?xml version="1.0" encoding="utf-8" ?>.

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 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_prologue(&req);
kxml_push(&req, 0); /* foo */
kxml_puts(&req, "Hello, world");
kxml_close(&req);

kcgixml(3)

Written by Kristaps Dzonsons <kristaps@bsd.lv>.
June 12, 2022 FreeBSD 13.1-RELEASE

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