kcgi_buf_putc.3

NAME

kcgi_buf_puts — put a character into a kcgi buffer

LIBRARY

library “libkcgi”

SYNOPSIS

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

enum kcgi_err
kcgi_buf_putc(struct kcgi_buf *buf, char c);

DESCRIPTION

Appends a character c to a buffer buf. 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_putc(&buf, 'f');
kcgi_buf_putc(&buf, 'o');
kcgi_buf_putc(&buf, 'o');
puts(buf.buf); /* Emits "foo" */
free(buf.buf);

AUTHORS

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