X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=main.cpp;h=f4506787364fa11ea01286cf2e569ffed5587c15;hp=661c84a6d23c0ea40d128a52fe8584608f624fd7;hb=9c025ef31b395a47a92011ed290df098f0934d21;hpb=075fb4995aaaf521502571d26da62a6923555eff

diff --git a/main.cpp b/main.cpp
index 661c84a6..f4506787 100644
--- a/main.cpp
+++ b/main.cpp
@@ -24,6 +24,8 @@ extern "C" {
 #include <libsigrok/libsigrok.h>
 }
 
+#include <getopt.h>
+
 #include <QtGui/QApplication>
 #include <QDebug>
 
@@ -31,50 +33,97 @@ extern "C" {
 
 #include "config.h"
 
+void usage()
+{
+	fprintf(stderr,
+		"Usage:\n"
+		"  %s — %s\n"
+		"\n"
+		"Help Options:\n"
+		"  -V, --version                   Show release version\n"
+		"  -h, -?, --help                  Show help option\n"
+		"\n", PV_BIN_NAME, PV_DESCRIPTION);
+}
+
 int main(int argc, char *argv[])
 {
+	int ret = 0;
+	struct sr_context *sr_ctx = NULL;
+
 	QApplication a(argc, argv);
 
-	/* Set some application metadata. */
+	// Set some application metadata
 	QApplication::setApplicationVersion(PV_VERSION_STRING);
 	QApplication::setApplicationName("PulseView");
 	QApplication::setOrganizationDomain("http://www.sigrok.org");
 
-	/* Initialise libsigrok */
-	if (sr_init() != SR_OK) {
-		qDebug() << "ERROR: libsigrok init failed.";
-		return 1;
+	// 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(stderr, "%s %s\n", PV_TITLE, PV_VERSION_STRING);
+			return 0;
+
+		case 'h':
+		case '?':
+			usage();
+			return 0;
+		}
 	}
 
-	/* Initialise libsigrokdecode */
-	if (srd_init(NULL) != SRD_OK) {
-		qDebug() << "ERROR: libsigrokdecode init failed.";
+	// Initialise libsigrok
+	if (sr_init(&sr_ctx) != SR_OK) {
+		qDebug() << "ERROR: libsigrok init failed.";
 		return 1;
 	}
 
-	/* Load the protocol decoders */
-	srd_decoder_load_all();
+	// Initialise libsigrokdecode
+	if (srd_init(NULL) == SRD_OK) {
 
-	/* 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;
+		// 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(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;
+			w.show();
 
-	/* Run the application */
-	const int ret = a.exec();
+			// Run the application
+			ret = a.exec();
+		}
+
+		// Destroy libsigrokdecode and libsigrok
+		srd_exit();
+
+	} else {
+		qDebug() << "ERROR: libsigrokdecode init failed.";
+	}
 
-	/* Destroy libsigrokdecode and libsigrok */
-	srd_exit();
-	sr_exit();
+	if (sr_ctx)
+		sr_exit(sr_ctx);
 
 	return ret;
 }