X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=main.cpp;h=43c8cb8e965c1c22bb947d3be71d7d3bf39d2613;hp=febe729c4bc97d0ea25e095ada555525c8f062b2;hb=488883133fefe0af41737cea9b2fc9eb114042b8;hpb=6a6772b7da8fcc841c2db16dfec5b26cd5bcd8b0

diff --git a/main.cpp b/main.cpp
index febe729c..43c8cb8e 100644
--- a/main.cpp
+++ b/main.cpp
@@ -18,11 +18,12 @@
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
  */
 
-extern "C" {
 #include <sigrokdecode.h> /* First, so we avoid a _POSIX_C_SOURCE warning. */
+#include <signal.h>
 #include <stdint.h>
 #include <libsigrok/libsigrok.h>
-}
+
+#include <getopt.h>
 
 #include <QtGui/QApplication>
 #include <QDebug>
@@ -31,50 +32,125 @@ extern "C" {
 
 #include "config.h"
 
+// Global pointer to our QApplication
+QApplication *g_app = NULL;
+
+void usage()
+{
+	fprintf(stdout,
+		"Usage:\n"
+		"  %s [OPTION…] [FILE] — %s\n"
+		"\n"
+		"Help Options:\n"
+		"  -V, --version                   Show release version\n"
+		"  -h, -?, --help                  Show help option\n"
+		"\n", PV_BIN_NAME, PV_DESCRIPTION);
+}
+
+/*
+ * SIGINT handler (likely received Ctrl-C from terminal)
+ */
+void sigint_handler(int param)
+{
+	(void)param;
+
+	qDebug("Received SIGINT.");
+
+	if (g_app)
+		g_app->quit();
+}
+
 int main(int argc, char *argv[])
 {
+	int ret = 0;
+	struct sr_context *sr_ctx = NULL;
+	const char *open_file = NULL;
+
+	// Register a SIGINT handler
+	signal(SIGINT, sigint_handler);
+
 	QApplication a(argc, argv);
+	// Now we have an application to populate our global pointer
+	g_app = &a;
 
 	// Set some application metadata
 	QApplication::setApplicationVersion(PV_VERSION_STRING);
 	QApplication::setApplicationName("PulseView");
 	QApplication::setOrganizationDomain("http://www.sigrok.org");
 
+	// Parse arguments
+	while (1) {
+		static const struct option long_options[] = {
+			{"version", no_argument, 0, 'V'},
+			{"help", no_argument, 0, 'h'},
+			{0, 0, 0, 0}
+		};
+
+		const char c = getopt_long(argc, argv,
+			"Vh?", long_options, NULL);
+		if (c == -1)
+			break;
+
+		switch (c) {
+		case 'V':
+			// Print version info
+			fprintf(stdout, "%s %s\n", PV_TITLE, PV_VERSION_STRING);
+			return 0;
+
+		case 'h':
+		case '?':
+			usage();
+			return 0;
+		}
+	}
+
+	if (argc - optind > 1) {
+		fprintf(stderr, "Only one file can be openened.\n");
+		return 1;
+	} else if (argc - optind == 1)
+		open_file = argv[argc - 1];
+
 	// Initialise libsigrok
-	if (sr_init() != SR_OK) {
+	if (sr_init(&sr_ctx) != SR_OK) {
 		qDebug() << "ERROR: libsigrok init failed.";
 		return 1;
 	}
 
 	// Initialise libsigrokdecode
-	if (srd_init(NULL) != SRD_OK) {
-		qDebug() << "ERROR: libsigrokdecode init failed.";
-		return 1;
-	}
+	if (srd_init(NULL) == SRD_OK) {
 
-	// Load the protocol decoders
-	srd_decoder_load_all();
+		// Load the protocol decoders
+		srd_decoder_load_all();
 
-	// Initialize all libsigrok drivers
-	sr_dev_driver **const drivers = sr_driver_list();
-	for (sr_dev_driver **driver = drivers; *driver; driver++) {
-		if (sr_driver_init(*driver) != SR_OK) {
-			qDebug("Failed to initialize driver %s",
-				(*driver)->name);
-			return 1;
+		// Initialize all libsigrok drivers
+		sr_dev_driver **const drivers = sr_driver_list();
+		for (sr_dev_driver **driver = drivers; *driver; driver++) {
+			if (sr_driver_init(sr_ctx, *driver) != SR_OK) {
+				qDebug("Failed to initialize driver %s",
+					(*driver)->name);
+				ret = 1;
+				break;
+			}
 		}
-	}
 
-	// Initialise the main window
-	pv::MainWindow w;
-	w.show();
+		if (ret == 0) {
+			// Initialise the main window
+			pv::MainWindow w(open_file);
+			w.show();
+
+			// Run the application
+			ret = a.exec();
+		}
+
+		// Destroy libsigrokdecode and libsigrok
+		srd_exit();
 
-	// Run the application
-	const int ret = a.exec();
+	} else {
+		qDebug() << "ERROR: libsigrokdecode init failed.";
+	}
 
-	// Destroy libsigrokdecode and libsigrok
-	srd_exit();
-	sr_exit();
+	if (sr_ctx)
+		sr_exit(sr_ctx);
 
 	return ret;
 }