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KJSON_PUTNULL(3) Library Functions Manual KJSON_PUTNULL(3) NAME kjson_putnull, kjson_putnullp -- put null content for kcgijson LIBRARY library "libkcgijson" SYNOPSIS #include <sys/types.h> #include <stdarg.h> #include <stdint.h> #include <kcgi.h> #include <kcgijson.h> enum kcgi_err kjson_putnull(struct kjsonreq *req); enum kcgi_err kjson_putnullp(struct kjsonreq *req, const char *name); DESCRIPTION Write a null to a context req initialised with khtml_open(3). The kjson_putnull() form is for array scopes and kjson_putnullp() for objects. Passing a NULL value to name for kjson_putnullp(), is equivalent to calling kjson_putnull(). 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 connec- tions, 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). In- dicates 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_obj_open(&req); kjson_putnullp(&req, "bar"); kjson_close(&req); SEE ALSO kcgijson(3) AUTHORS Written by Kristaps Dzonsons <kristaps@bsd.lv>. FreeBSD Ports 14.quarterly $Mdocdate$ KJSON_PUTNULL(3)
NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | EXAMPLES | SEE ALSO | AUTHORS
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