6 * Copyright (C) 1987 by the Massachusetts Institute of Technology
7 * For copying and distribution information, please see the file
13 static char *rcsid_sms_query_c = "$Header$";
16 #include <mit-copyright.h>
17 #include "mr_private.h"
22 * This routine is the primary external interface to the mr library.
24 * It builds a new argument vector with the query handle prepended,
25 * and calls mr_query_internal.
29 int mr_query(name, argc, argv, callproc, callarg)
30 char *name; /* Query name */
31 int argc; /* Arg count */
32 char **argv; /* Args */
33 int (*callproc)(); /* Callback procedure */
34 char *callarg; /* Callback argument */
36 register char **nargv = (char **)malloc(sizeof(char *) * (argc+1));
37 register int status = 0;
39 memcpy((char *)(nargv+1), (char *)argv, sizeof(char *) * argc);
40 status = mr_query_internal(argc+1, nargv, callproc, callarg);
45 * This routine makes an MR query.
47 * argv[0] is the query name.
48 * argv[1..argc-1] are the query arguments.
50 * callproc is called once for each returned value, with arguments
51 * argc, argv, and callarg.
52 * If it returns a non-zero value, further calls to it are not done, and
53 * all future data from the server is ignored (there should be some
54 * way to send it a quench..)
57 int mr_query_internal(argc, argv, callproc, callarg)
58 int argc; /* Arg count */
59 char **argv; /* Args */
60 int (*callproc)(); /* Callback procedure */
61 char *callarg; /* Callback argument */
65 register mr_params *params = NULL;
66 mr_params *reply = NULL;
67 int stopcallbacks = 0;
69 if (level) return MR_QUERY_NOT_REENTRANT;
75 params->mr_version_no = sending_version_no;
76 params->mr_procno = MR_QUERY;
77 params->mr_argc = argc;
78 params->mr_argl = NULL;
79 params->mr_argv = argv;
81 if ((status = mr_do_call(params, &reply)))
84 while ((status = reply->mr_status) == MR_MORE_DATA) {
87 (*callproc)(reply->mr_argc, reply->mr_argv, callarg);
88 mr_destroy_reply(reply);
91 initialize_operation(_mr_recv_op, mr_start_recv, &reply,
93 queue_operation(_mr_conn, CON_INPUT, _mr_recv_op);
95 mr_complete_operation(_mr_recv_op);
96 if (OP_STATUS(_mr_recv_op) != OP_COMPLETE) {
103 mr_destroy_reply(reply);