VTE read output from terminal

Martingt89 · **Joined:** Sun Feb 15, 2009 12:16 pm **Posts:** 1

Hi, I creat a virtual terminal, signals for "contents-changed" and "child-exited". I run command "hcitool" arg: "dev"

I read terminal in signals:
gchar *a[] = {vte_terminal_get_text(VTE_TERMINAL(terminal),NULL,NULL,NULL)};

If command end, *a ist empty :( and "contents-changed" no started.

How read terminal?

concise source code:

[code=]
#include <vte/vte.h>
#include <iostream>
...
using namespace std;
void chang(){
gchar *a[] = {vte_terminal_get_text(VTE_TERMINAL(terminal),NULL,NULL,NULL)};
cout<<*a<<endl
}
void ending(){
gchar *a[] = {vte_terminal_get_text(VTE_TERMINAL(terminal),NULL,NULL,NULL)};
cout<<*a<<endl
}

int main (int argc, char **argv)
{
terminal = vte_terminal_new();
g_signal_connect (G_OBJECT (VTE_TERMINAL(terminal)), "contents-changed", G_CALLBACK (chang),NULL);
g_signal_connect (G_OBJECT (VTE_TERMINAL(terminal)), "child-exited",G_CALLBACK (ending),NULL);
char* args[] = {"/usr/bin/hcitool", "dev",NULL};

int a = vte_terminal_fork_command(VTE_TERMINAL(terminal),args[0], args, NULL,"/home/martingt", fals, false, false);
...
[/code]

Norbert · **Joined:** Thu Feb 26, 2009 7:46 pm **Posts:** 3

I have the same problem. After longtime searching I discovered more low level solution. I think you can read child's output (process which are running in VTE) with GIOChannel and this function:

Code:

static gboolean vte_terminal_io_read(GIOChannel *channel,         GIOCondition condition, VteTerminal *terminal);

For additional info see vte.c from VTE source code.

Norbert · **Joined:** Thu Feb 26, 2009 7:46 pm **Posts:** 3

Norbert wrote:

I have the same problem. After longtime searching I discovered more low level solution. I think you can read child's output (process which are running in VTE) with GIOChannel and this function:

Code:

static gboolean vte_terminal_io_read(GIOChannel *channel,         GIOCondition condition, VteTerminal *terminal);

For additional info see vte.c from VTE source code.

My previous post was not correct. The vte_terminal_io_read function is STATIC. It mean that is not present in vte library.
Function that you are going to use (vte_terminal_get_text) works if is_selected=TRUE - if you select text. Therefore empty a variable is normal.

My new solution is:
[code=]
g_io_add_watch(VTE_TERMINAL(terminal)->pvt->pty_channel, G_IO_IN, read_data, VTE_TERMINAL(terminal)); // creating watch for reading data from a VteTerminal's pipe.

// read_data function is
gboolean read_data (GIOChannel *source, GIOCondition condition, gpointer data)
{
char buf[32768];
gsize size;
GIOStatus status;
g_assert(VTE_IS_TERMINAL(data));
status = g_io_channel_read_chars(source, buf, sizeof(buf), &size, NULL);

if (((status == G_IO_STATUS_NORMAL) || (status == G_IO_STATUS_EOF)) && (size > 0))
{
// g_print("read /n%s",buf); // debug
vte_terminal_feed(VTE_TERMINAL(data), buf, size);
return TRUE;
}
return FALSE;
}
[/code]

arih · **Joined:** Tue Mar 10, 2009 6:30 am **Posts:** 9

actually, i am doing the project using glade+gtk+c, but, i have some problem doing it in order, the supervisor need the VTE terminal to be put in the interface for the second version software. I dont know how to make the VTE terminal pop-up in the interface like the popup window....
it means like, i have button for the VTE, and if i click the button, the terminal will show...
anyone can give a help..
thank u so much....

Norbert · **Joined:** Thu Feb 26, 2009 7:46 pm **Posts:** 3

arih wrote:

actually, i am doing the project using glade+gtk+c, but, i have some problem doing it in order, the supervisor need the VTE terminal to be put in the interface for the second version software. I dont know how to make the VTE terminal pop-up in the interface like the popup window....
it means like, i have button for the VTE, and if i click the button, the terminal will show...
anyone can give a help..
thank u so much....

Hello! I think you can do it with my code:

Code:

// vteopener.c by Norbert.
// Compile and run with command:
// gcc vteopener.c -o vteopener `pkg-config --cflags --libs gtk+-2.0 vte` && ./vteopener

#include <gtk/gtk.h>
#include <vte/vte.h>

static void exec_shell_in_vte(GtkWidget *widget)
{
   if (!GTK_WIDGET_REALIZED (widget))
      return;

    vte_terminal_fork_command (VTE_TERMINAL(widget), NULL, NULL, NULL, NULL,  0, 0, 0); // execute a Shell in VTE
}

static void showvte ()
{
  GtkWidget *popup_window; // pointer to VTE pop-up windows
  GtkWidget *vteterminal;  // pointer to VTE widget

    popup_window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
    gtk_window_set_title(GTK_WINDOW(popup_window), "VTE Pop-up window");


    vteterminal = vte_terminal_new (); // create VTE widget

    g_signal_connect(vteterminal, "realize",G_CALLBACK(exec_shell_in_vte), popup_window); // creating a signal for execution Shell in VTE after creation of VTE widget

    gtk_container_add(GTK_CONTAINER(popup_window), vteterminal);
    gtk_window_set_position (GTK_WINDOW (popup_window), GTK_WIN_POS_CENTER);
    gtk_widget_realize (vteterminal);
    gtk_widget_show_all(popup_window);
}

int main (int argc, char *argv[])
{
  GtkWidget *button = NULL; // pointer to Execution button
  GtkWidget *win = NULL;    // pointer to Window with Execution button

  /* Initialize GTK+ */
  gtk_init (&argc, &argv);

  /* Create the main window */
  win = gtk_window_new (GTK_WINDOW_TOPLEVEL);
  gtk_container_set_border_width (GTK_CONTAINER (win), 100);
  gtk_window_set_title (GTK_WINDOW (win), "VTE opener");
  gtk_window_set_position (GTK_WINDOW (win), GTK_WIN_POS_CENTER);
  gtk_widget_realize (win);
  g_signal_connect (win, "destroy", gtk_main_quit, NULL);

  /* Create a button */
  button = gtk_button_new_from_stock (GTK_STOCK_EXECUTE);
    g_signal_connect (G_OBJECT (button), "clicked", G_CALLBACK (showvte), NULL); // creating a signal for opening VTE pop-up window
  gtk_container_add (GTK_CONTAINER (win), button);

  /* Enter the main loop */
  gtk_widget_show_all (win);
  gtk_main ();
  return 0;
}

Think more abstactly. It is does not matter which window you open - VTE or other window. It is simply opening one window from another:)

arih · **Joined:** Tue Mar 10, 2009 6:30 am **Posts:** 9

tq norbert...
i willl try it...
because i already do some code but when i am compiling the code, there have some error, like undefined references... and ld exit 1 something like that, so now, a im trying to configure why there is an error...
but i will try to compile your code...
thanks 4 helping.....

arih · **Joined:** Tue Mar 10, 2009 6:30 am **Posts:** 9

tq norbert i already run the code, it works...
:D

ako · **Posted:** Sat Dec 10, 2011 4:39 pm

Hi to all forum ,

On first sorry for my english .

I try to compile the Norbet example but I have follow error : vte_terminal_fork_command' is deprecated (declared at /usr/include/vte-0.0/vte/vtedeprecated.h:82).

Can you help me ?

Many thanks.

ako · **Posted:** Sat Dec 10, 2011 7:16 pm

I reply on myself ,

new vte_terminal_fork_command = vte_terminal_fork_command_full .

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