NCBI C Toolkit Cross Reference

C/access/mimapi.c

  1 /*   mimapi.c
  2 * ===========================================================================
  3 *
  4 *                            PUBLIC DOMAIN NOTICE
  5 *            National Center for Biotechnology Information (NCBI)
  6 *
  7 *  This software/database is a "United States Government Work" under the
  8 *  terms of the United States Copyright Act.  It was written as part of
  9 *  the author's official duties as a United States Government employee and
 10 *  thus cannot be copyrighted.  This software/database is freely available
 11 *  to the public for use. The National Library of Medicine and the U.S.
 12 *  Government do not place any restriction on its use or reproduction.
 13 *  We would, however, appreciate having the NCBI and the author cited in
 14 *  any work or product based on this material
 15 *
 16 *  Although all reasonable efforts have been taken to ensure the accuracy
 17 *  and reliability of the software and data, the NLM and the U.S.
 18 *  Government do not and cannot warrant the performance or results that
 19 *  may be obtained by using this software or data. The NLM and the U.S.
 20 *  Government disclaim all warranties, express or implied, including
 21 *  warranties of performance, merchantability or fitness for any particular
 22 *  purpose.
 23 *
 24 * ===========================================================================
 25 *
 26 * File Name:  mimapi.c
 27 *
 28 * Author:  Jonathan Kans
 29 *
 30 * Version Creation Date:   8/16/00
 31 *
 32 * $Revision: 1.10 $
 33 *
 34 * File Description: 
 35 *
 36 * Modifications:  
 37 * --------------------------------------------------------------------------
 38 * Date     Name        Description of modification
 39 * -------  ----------  -----------------------------------------------------
 40 *
 41 *
 42 * ==========================================================================
 43 */
 44 
 45 #include <ncbi.h>
 46 #include <urlquery.h>
 47 #include <mimapi.h>
 48 
 49 /* low-level connection functions */
 50 
 51 NLM_EXTERN CONN MimOpenConnection (
 52   Int4 uid
 53 )
 54 
 55 {
 56   Char  query [64];
 57 
 58   if (uid < 1) return NULL;
 59 
 60   /*
 61   sprintf (query, "cmd=ASN.1&id=%ld", (long) uid);
 62   return QUERY_OpenUrlQuery ("www.ncbi.nlm.nih.gov", 80, "/entrez/dispomim.cgi",
 63                              query, "Entrez2Tool", 30, eMIME_T_NcbiData,
 64                              eMIME_AsnText, eENCOD_None, 0);
 65   */
 66 
 67   sprintf (query, "id=%ld", (long) uid);
 68   return QUERY_OpenServiceQuery ("MimFetch", query, 30);
 69 }
 70 
 71 #ifdef OS_MAC
 72 #include <Events.h>
 73 #endif
 74 
 75 NLM_EXTERN MimEntryPtr MimWaitForReply (
 76   CONN conn
 77 )
 78 
 79 {
 80   AsnIoConnPtr  aicp;
 81   time_t        currtime, starttime;
 82   time_t        max = 0;
 83   MimEntryPtr   mep = NULL;
 84   EIO_Status    status;
 85   STimeout      timeout;
 86 #ifdef OS_MAC
 87   EventRecord   currEvent;
 88 #endif
 89 
 90   if (conn == NULL) return NULL;
 91 
 92 #ifdef OS_MAC
 93   timeout.sec = 0;
 94   timeout.usec = 0;
 95 #else
 96   timeout.sec = 100;
 97   timeout.usec = 0;
 98 #endif
 99 
100   starttime = GetSecs ();
101   while ((status = CONN_Wait (conn, eIO_Read, &timeout)) == eIO_Timeout && max < 300) {
102     currtime = GetSecs ();
103     max = currtime - starttime;
104 #ifdef OS_MAC
105     WaitNextEvent (0, &currEvent, 0, NULL);
106 #endif
107   }
108   if (status == eIO_Success) {
109     aicp = QUERY_AsnIoConnOpen ("r", conn);
110     mep = MimEntryAsnRead (aicp->aip, NULL);
111     QUERY_AsnIoConnClose (aicp);
112   }
113   CONN_Close (conn);
114 
115   return mep;
116 }
117 
118 /* high-level connection functions */
119 
120 NLM_EXTERN MimEntryPtr MimSynchronousQuery (
121   Int4 uid
122 )
123 
124 {
125   CONN         conn;
126   MimEntryPtr  mep;
127 
128   conn = MimOpenConnection (uid);
129 
130   if (conn == NULL) return NULL;
131 
132   QUERY_SendQuery (conn);
133 
134   mep = MimWaitForReply (conn);
135 
136   return mep;
137 }
138 
139 NLM_EXTERN Boolean MimAsynchronousQuery (
140   Int4 uid,
141   QUEUE* queue,
142   QueryResultProc resultproc,
143   VoidPtr userdata
144 )
145 
146 {
147   CONN  conn;
148 
149   conn = MimOpenConnection (uid);
150 
151   if (conn == NULL) return FALSE;
152 
153   QUERY_SendQuery (conn);
154 
155   QUERY_AddToQueue (queue, conn, resultproc, userdata, TRUE);
156 
157   return TRUE;
158 }
159 
160 NLM_EXTERN Int4 MimCheckQueue (
161   QUEUE* queue
162 )
163 
164 {
165   return QUERY_CheckQueue (queue);
166 }
167 
168 NLM_EXTERN MimEntryPtr MimReadReply (
169   CONN conn,
170   EIO_Status status
171 )
172 
173 {
174   AsnIoConnPtr  aicp;
175   MimEntryPtr   mep = NULL;
176 
177   if (conn != NULL && status == eIO_Success) {
178     aicp = QUERY_AsnIoConnOpen ("r", conn);
179     mep = MimEntryAsnRead (aicp->aip, NULL);
180     QUERY_AsnIoConnClose (aicp);
181   }
182   return mep;
183 }
184 
185
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