Parsing command line arguments functionality, -qws option not yet handled correctly.

1 files changed, 41 insertions, 4 deletions

diff --git a/fbbrowser/main.cpp b/fbbrowser/main.cpp
index 7795688..5e008f8 100644
--- a/fbbrowser/main.cpp
+++ b/fbbrowser/main.cpp
@@ -2,6 +2,17 @@
 
 #include <QtGui>
 #include <QApplication>
+#include <iostream>
+#include <getopt.h>
+
+void printUsage()
+{
+    // Prints usage information, incomplete.
+    // Q: How is the -qws option handled, mention it here or not?
+    QTextStream qout(stdout); 
+    qout << QObject::tr("Usage: ./fbbrowser [OPTIONS]") << endl;
+    exit(1);
+}
 
 QString getPath(const char* c)
 {
@@ -15,6 +26,32 @@ QString getPath(const char* c)
 
 int main(int argc, char *argv[])
 {
+    // Parse command line arguments.
+    int opt = 1;
+    int longIndex = 0;
+    // Declare the short options as a char*, these have exactly one - followed by letter from optString.
+    // For example: ./fbbrowser -h
+    // Declare the long options in the const struct, these have two - followed by a string found in longOpts[].
+    // Same as:     ./fbbrowser --help
+    static const char *optString = "h?";
+    static const struct option longOpts[] =
+    {
+        // If an option requires parameters, write this number instead of no_argument.
+        // The last argument, is the corresponding char to the option string.
+    	{"help", no_argument, NULL, 'h'}
+    };
+    // getopt_long returns the index of the next argument to be read, -1 if there are no more arguments.
+    opt = getopt_long(argc, argv, optString, longOpts, &longIndex);
+    while (opt != -1)
+    {
+    	switch(opt)
+        {
+        case 'h':
+            printUsage();
+            break;
+        }
+        opt = getopt_long(argc, argv, optString, longOpts, &longIndex);
+    }
     // This is the main object of a QT Application.
     QApplication a(argc, argv);
     // Is this really needed, since we kill the app through the fbbrowser object?
@@ -23,10 +60,10 @@ int main(int argc, char *argv[])
     QString appPath = getPath(argv[0]);
     // This part reads the URL to load from the arguments given through the commandline.
     QUrl url;
-            if (argc > 1)
-                url = QUrl(argv[1]);
-            else //Default URL to load
-                url = QUrl("http://132.230.4.3/webkitTest.html");
+    if (argc > 1)
+       url = QUrl(argv[1]);
+    else //Default URL to load
+       url = QUrl("http://132.230.4.3/webkitTest.html");
     // Create a new Framebuffer-Browser object for displaying the given URL.
     fbbrowser *fbb = new fbbrowser(url);
     // Listen to the signalQuitAll() Signal to kill the app from within the browser.