Grab File Path in C + WebkitGTK - c

Question

I'm trying to compile my web app as a native desktop application in C. However I'm having a bit of trouble grabbing the file path in C.
In PyGTK I would use...
import webkit, pygtk, gtk, os
path=os.getcwd()
print path
web_view.open("file://" + path + "/index.html")
However I'm not sure if I'm just looking in the wrong places or what, but when I search Google I haven't been able to find out how to grab the file path in C which I want to use like this.
gchar* uri = (gchar*) (argc > 1 ? argv[1] : "file://" + path + "app/index.html");
Instead of linking to it in a grotesque manner like so...
gchar* uri = (gchar*) (argc > 1 ? argv[1] : "file://" + /home/michael/Desktop/kodeWeave/linux/app/index.html");
webkit_web_view_open (web_view, uri);
Here's my full project (if helpful).
#include <stdio.h>
#include <string.h>
#include <gtk/gtk.h>
#include <webkit/webkit.h>
static WebKitWebView* web_view;
void on_window_destroy (GtkObject *object, gpointer user_data) {
gtk_main_quit();
}
int main (int argc, char *argv[]) {
GtkBuilder *builder;
GtkWidget *window;
GtkWidget *scrolled_window;
gtk_init(&argc, &argv);
builder = gtk_builder_new();
gtk_builder_add_from_file (builder, "browser.xml", NULL);
window = GTK_WIDGET (gtk_builder_get_object (builder, "window1"));
scrolled_window = GTK_WIDGET (gtk_builder_get_object (builder, "scrolledwindow1"));
g_signal_connect (G_OBJECT (window), "delete-event", gtk_main_quit, NULL);
gtk_window_set_title(GTK_WINDOW(window), "kodeWeave");
web_view = WEBKIT_WEB_VIEW (webkit_web_view_new());
gtk_container_add (GTK_CONTAINER (scrolled_window), GTK_WIDGET (web_view));
gtk_builder_connect_signals (builder, NULL);
g_object_unref (G_OBJECT (builder));
gchar* uri = (gchar*) (argc > 1 ? argv[1] : "file:///home/michael/Desktop/kodeWeave/linux/app/index.html");
webkit_web_view_open (web_view, uri);
gtk_widget_grab_focus (GTK_WIDGET (web_view));
gtk_widget_show_all (window);
gtk_main();
return 0;
}

Answer 1

You can't use the + operator to concatenate strings in c, you may need snprintf instead, first you need a large enough buffer, may be the constant PATH_MAX will work, it's defined in limits.h, so for example
char uri[PATH_MAX];
char cwd[PATH_MAX];
getcwd(cwd, sizeof(cwd));
if (argc > 1)
snprintf(uri, sizeof(uri), "%s", argv[1]);
else
snprintf(uri, sizeof(uri), "file://%s/index.html", cwd);
/* ^ %s specifier for ^ this char pointer */
the + operator works with your operands, but in a different way, it just performs pointer arithmetic, because the operands are pointers.