KJSON_STRING_WRITE(3)

NAME
kjson_string_write - put content data for kcgijson

LIBRARY
libkcgijson

SYNOPSIS
#include <sys/types.h>
#include <stdarg.h>
#include <stdint.h>
#include <kcgi.h>
#include <kcgijson.h>
enum kcgi_err
kjson_string_write(const char *buf, size_t sz, void *arg);

DESCRIPTION
Write binary data buf of length sz into a string scope opened with kjson_string_open(3) or kjson_stringp_open(3) to a context arg, a struct kjsonreq initialised with khtml_open(3) and passed as an opaque pointer. If buf is NULL or sz is zero, do nothing and return KCGI_OK.

All characters are JSON escaped so that content cannot prematurely end its context.

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
    The incorrect form was used for the current scope, for example, an array-type write within an object.

EXAMPLES
The following outputs a simple JSON document. 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_APP_JSON]);
    khttp_body(r);
    kjson_open(&req, r);
    kjson_string_open(&req);
    kjson_string_write("hello", 5, &req);
    kjson_close(&req);

SEE ALSO
kcgijson(3)

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