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kcgi/man/kjson_string_close.3

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.\" $Id$
.\"
.\" Copyright (c) 2020 Kristaps Dzonsons <kristaps@bsd.lv>
.\"
.\" Permission to use, copy, modify, and distribute this software for any
.\" purpose with or without fee is hereby granted, provided that the above
.\" copyright notice and this permission notice appear in all copies.
.\"
.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
.\"
.Dd $Mdocdate$
.Dt KJSON_STRING_CLOSE 3
.Os
.Sh NAME
.Nm kjson_string_close
.Nd open string scope for kcgijson
.Sh LIBRARY
.Lb libkcgijson
.Sh SYNOPSIS
.In sys/types.h
.In stdarg.h
.In stdint.h
.In kcgi.h
.In kcgijson.h
.Ft enum kcgi_err
.Fo kjson_string_close
.Fa "struct kjsonreq *req"
.Fc
.Sh DESCRIPTION
Closes an string scope created with
.Xr kjson_string_open 3
or
.Xr kjson_stringp_open 3
in a context
.Fa req
initialised with
.Xr khtml_open 3 .
It is an error to close a non-string scope.
.Sh RETURN VALUES
Returns an
.Ft enum kcgi_err
indicating the error state.
.Bl -tag -width -Ds
.It Dv KCGI_OK
Success (not an error).
.It Dv KCGI_ENOMEM
Internal memory allocation failure.
.It Dv KCGI_HUP
The output connection has been terminated.
For FastCGI connections, the current connection should be released with
.Xr khttp_free 3
and parse loop reentered.
.It Dv KCGI_FORM
The connection is still expecting headers with
.Xr khttp_head 3 .
Indicates that
.Xr khttp_body 3
did not return with success or was not invoked.
For FastCGI connections, the current connection should be released with
.Xr khttp_free 3
and parse loop reentered.
.It Dv KCGI_SYSTEM
Internal system error writing to the output stream.
.It Dv KCGI_WRITER
The current scope is not a string.
.El
.Sh EXAMPLES
The following outputs a simple JSON document.
It assumes
.Va r
is a
.Vt struct kreq
pointer.
For brevity, it does not do any error checking.
.Bd -literal -offset indent
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_puts(&req, "Hello, ");
kjson_string_puts(&req, "world.");
kjson_string_close(&req);
kjson_close(&req);
.Ed
.Sh SEE ALSO
.Xr kcgijson 3
.Sh AUTHORS
Written by
.An Kristaps Dzonsons Aq Mt kristaps@bsd.lv .