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	qwerty12	2010-05-22 , 05:51
	Posts: 4,274 \| Thanked: 5,358 times \| Joined on Sep 2007 @ Looking at y'all and sighing	#36

Originally Posted by Dak

OK...thanks to qwerty I reckon I'm getting somewhere

[See attached .tar.gz]

I converted the Vala into a little C prog (main.c)

*Cries* - Vala converts to C before building
(Although, blame any stupidities of mine such as checking the suffix on my cold...)

Originally Posted by Dak

I converted the Vala into a little C prog (main.c)

I included the service and desktop files

Now, when I click on a jarfile in FileManager it no longer asks me what I wish to use to open it with....it just does nothing.

So I ran the javalauncher prog on the cmd line, and I could see that it successfully called osso_initialize and osso_mime_set_cb, but I have no way of knowing if the prog is being successfully called by FileManager/mime_open.

What is the best way to debug this mechanism?

In your service file, you call the service "org.maemo.javalauncher", which is fine but you've still left it as "javalauncher" in the desktop file. When a name is not given a prefix, it automatically assumes "com.nokia.javalauncher". So you've got a desktop file looking for com.nokia.javalauncher but a service file only defining org.maemo.javalauncher.
This is also true for osso_initialize(), so the call to that must also be amended.

I verified your program actually starts by doing a - wait for it - "while true; do ps | grep java | grep -v grep; done"

from the terminal.

However,

PHP Code:


			
dbus_connection_flush((DBusConnection*)osso_get_dbus_connection(ctx));
dbus_connection_read_write((DBusConnection*)osso_get_dbus_connection(ctx), 0);

didn't work for me; mime_cb was never called. Maybe I'm doing it on the wrong DBusConnection, but I dunno.

So I went back to what works for me: A GMainLoop. libosso will automatically call dbus_connection_setup_with_g_main () on both its connections for you, and mime_cb was actually getting called this time. And, according to ltrace, it's sure not waking up as much

Now, the name given will be a URI. javac doesn't understand so I used the g_filename_from_uri function from GLib. Whilst it's tempting to just remove the "file://" prefix, the browser, when "opening a file", will give you a real URI that must be escaped

When doing this, it all worked

PHP Code:


			
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include <libosso.h>
//#include "osso-internal.h"

static char* jarexec_cmd = "/usr/local/bin/jarexec";

static void mime_cb(GMainLoop *loop, int argc, gchar** argv)
{
  int cmdlen = strlen(jarexec_cmd) + 1;
  int arglen = 0;
  char* cmd = NULL;
  int i = 0;
  for (i=0; i<argc; i++)
  {
    if (argv[i] != NULL)
    {
      gchar *cmd_filename = NULL;

      arglen = strlen(argv[i]);
      cmd = malloc(cmdlen + arglen + 1);
      memset(cmd, 0x00, cmdlen + arglen + 1);

      printf(cmd, "%s %s\n", jarexec_cmd, argv[i]);
      fflush(stdout);

      cmd_filename = g_filename_from_uri (argv[i], NULL, NULL);
      sprintf(cmd, "%s %s", jarexec_cmd, cmd_filename);
      g_free(cmd_filename);

      //osso_system_note_infoprint () -- would be nice, IMHO

      system(cmd);
      free (cmd);
    }
  }
  
  g_main_loop_quit (loop);
}

int main(int argc, char** argv)
{
  osso_context_t* ctx = osso_initialize("org.maemo.javalauncher","0.1", 0, NULL);
  GMainLoop *loop = g_main_loop_new (NULL, FALSE);
  if (ctx != NULL && loop != NULL)
  {
    printf("javalauncher osso_initialize succeeded\n");
    printf("\n");
    fflush(stdout);

    if (osso_mime_set_cb(ctx, mime_cb, loop) == OSSO_OK)
    {
      printf("javalauncher osso_mime_set_cb succeeded\n");
      fflush(stdout);

      /* while (jar_running)
      {
        dbus_connection_flush((DBusConnection*)osso_get_dbus_connection(ctx));
        dbus_connection_read_write((DBusConnection*)osso_get_dbus_connection(ctx), 0);
        sleep(1);
      } */
      g_main_loop_run (loop);
    }
    else
    {
      printf("javalauncher osso_mime_set_cb failed\n");
      fflush(stdout);
    }
  }
  else
  {
    printf("javalauncher osso_initialize failed\n");
    fflush(stdout);
  }

  return (EXIT_SUCCESS);
}

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The Following 3 Users Say Thank You to qwerty12 For This Useful Post:
Dak, kevloral, The Winter