KCGI_BUF_PRINTF(3)

NAME
kcgi_buf_printf - put variable content into a kcgi buffer

LIBRARY
libkcgi

SYNOPSIS
#include <sys/types.h>
#include <stdarg.h>
#include <stdint.h>
#include <kcgi.h>
enum kcgi_err
kcgi_buf_puts(struct kcgi_buf *buf, const char *fmt, ...);

DESCRIPTION
Appends output according to the given fmt to a buffer buf. The format is as for printf(3). Buffers must be initialised to zero with memset(3) prior to first use.

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 creates a simple NUL-terminated buffer and outputs its contents. It does not perform any error checking.

    struct kcgi_buf buf;
    memset(&buf, 0, sizeof(struct kcgi_buf));
    kcgi_buf_printf(&buf, "number %d", 1);
    puts(buf.buf); /* Emits "number 1" */
    free(buf.buf);

SEE ALSO
kcgi_buf_putc(3), kcgi_buf_puts(3), kcgi_buf_write(3)

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