From c6db088ca0b2869eea573931f0bb73eec5222376 Mon Sep 17 00:00:00 2001
From: "Eric S. Raymond" <esr@thyrsus.com>
Date: Thu, 24 Feb 2011 23:09:04 -0500
Subject: Split an excessively long function. No logic changes. All regression
 tests pass.

---
 libgpsd_core.c | 64 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 64 insertions(+)

(limited to 'libgpsd_core.c')

diff --git a/libgpsd_core.c b/libgpsd_core.c
index 6b1cb492..3f2323cf 100644
--- a/libgpsd_core.c
+++ b/libgpsd_core.c
@@ -722,6 +722,70 @@ void gpsd_clear(struct gps_device_t *session)
     session->opentime = timestamp();
 }
 
+int gpsd_open(struct gps_device_t *session)
+/* open a device for access to its data */
+{
+    /* special case: source may be a URI to a remote GNSS or DGPS service */
+    if (netgnss_uri_check(session->gpsdata.dev.path)) {
+	session->gpsdata.gps_fd = netgnss_uri_open(session,
+						   session->gpsdata.dev.path);
+	session->sourcetype = source_tcp;
+	gpsd_report(LOG_SPIN,
+		    "netgnss_uri_open(%s) returns socket on fd %d\n",
+		    session->gpsdata.dev.path, session->gpsdata.gps_fd);
+	return session->gpsdata.gps_fd;
+    /* otherwise, could be an TCP data feed */
+    } else if (strncmp(session->gpsdata.dev.path, "tcp://", 6) == 0) {
+	char server[GPS_PATH_MAX], *port;
+	socket_t dsock;
+	(void)strlcpy(server, session->gpsdata.dev.path + 6, sizeof(server));
+	session->gpsdata.gps_fd = -1;
+	port = strchr(server, ':');
+	if (port == NULL) {
+	    gpsd_report(LOG_ERROR, "Missing colon in TCP feed spec.\n");
+	    return -1;
+	}
+	*port++ = '\0';
+	gpsd_report(LOG_INF, "opening TCP feed at %s, port %s.\n", server,
+		    port);
+	if ((dsock = netlib_connectsock(AF_UNSPEC, server, port, "tcp")) < 0) {
+	    gpsd_report(LOG_ERROR, "TCP device open error %s.\n",
+			netlib_errstr(dsock));
+	    return -1;
+	} else
+	    gpsd_report(LOG_SPIN, "TCP device opened on fd %d\n", dsock);
+	session->gpsdata.gps_fd = dsock;
+	session->sourcetype = source_tcp;
+	return session->gpsdata.gps_fd;
+    /* or could be UDP */
+    } else if (strncmp(session->gpsdata.dev.path, "udp://", 6) == 0) {
+	char server[GPS_PATH_MAX], *port;
+	socket_t dsock;
+	(void)strlcpy(server, session->gpsdata.dev.path + 6, sizeof(server));
+	session->gpsdata.gps_fd = -1;
+	port = strchr(server, ':');
+	if (port == NULL) {
+	    gpsd_report(LOG_ERROR, "Missing colon in UDP feed spec.\n");
+	    return -1;
+	}
+	*port++ = '\0';
+	gpsd_report(LOG_INF, "opening UDP feed at %s, port %s.\n", server,
+		    port);
+	if ((dsock = netlib_connectsock(AF_UNSPEC, server, port, "udp")) < 0) {
+	    gpsd_report(LOG_ERROR, "UDP device open error %s.\n",
+			netlib_errstr(dsock));
+	    return -1;
+	} else
+	    gpsd_report(LOG_SPIN, "UDP device opened on fd %d\n", dsock);
+	session->gpsdata.gps_fd = dsock;
+	session->sourcetype = source_udp;
+	return session->gpsdata.gps_fd;
+    }
+
+    /* fall through to plain serial open */
+    return gpsd_serial_open(session);
+}
+
 /*@ -branchstate @*/
 int gpsd_activate(struct gps_device_t *session)
 /* acquire a connection to the GPS device */
-- 
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