Desktop
/* $Id: run.c,v 1.3 2010/02/14 20:37:20 khorben Exp $ */
/* Copyright (c) 2010 Pierre Pronchery <khorben@defora.org> */
/* This file is part of DeforaOS Desktop Accessories */
/* Accessories is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License version 2 as published by the
* Free Software Foundation.
*
* Accessories is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* Accessories; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place, Suite 330, Boston, MA 02111-1307 USA */
#include <System.h>
#include <sys/wait.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <gtk/gtk.h>
/* run */
/* types */
typedef struct _Run
{
Config * config;
gboolean terminal;
/* widgets */
GtkWidget * window;
GtkWidget * entry;
/* internal */
pid_t pid; /* current child */
} Run;
/* constants */
#define PACKAGE "run"
#define RUN_CONFIG_FILE ".runrc"
/* functions */
/* useful */
static int _run_error(char const * message, int ret);
static char * _run_get_config_filename(void);
/* callbacks */
static gboolean _on_run_closex(GtkWidget * widget, GdkEvent * event,
gpointer data);
static void _on_run_cancel(GtkWidget * widget, gpointer data);
static void _on_run_choose_activate(GtkWidget * widget, gint arg1,
gpointer data);
static void _on_run_execute(GtkWidget * widget, gpointer data);
static void _on_run_path_activate(GtkWidget * widget, gpointer data);
static void _on_run_terminal_toggle(GtkWidget * widget, gpointer data);
/* run_new */
static GtkWidget * _new_entry(Config * config);
static Run * _run_new(void)
{
Run * run;
GtkWindow * window;
GtkWidget * vbox;
GtkWidget * hbox;
GtkWidget * widget;
GtkSizeGroup * group;
if((run = object_new(sizeof(*run))) == NULL)
return NULL;
run->config = config_new();
run->terminal = FALSE;
run->window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
window = GTK_WINDOW(run->window);
gtk_window_set_keep_above(window, TRUE);
gtk_window_set_icon_name(window, GTK_STOCK_EXECUTE);
gtk_window_set_position(window, GTK_WIN_POS_CENTER_ALWAYS);
gtk_window_set_resizable(window, FALSE);
gtk_window_set_skip_pager_hint(window, TRUE);
gtk_window_set_title(window, "Run program...");
g_signal_connect(G_OBJECT(window), "delete_event", G_CALLBACK(
_on_run_closex), run);
group = gtk_size_group_new(GTK_SIZE_GROUP_BOTH);
vbox = gtk_vbox_new(FALSE, 0);
hbox = gtk_hbox_new(FALSE, 0);
widget = gtk_label_new("Command:");
gtk_box_pack_start(GTK_BOX(hbox), widget, FALSE, FALSE, 4);
run->entry = _new_entry(run->config);
g_signal_connect(G_OBJECT(run->entry), "activate", G_CALLBACK(
_on_run_path_activate), run);
gtk_box_pack_start(GTK_BOX(hbox), run->entry, TRUE, TRUE, 4);
widget = gtk_file_chooser_dialog_new("Run program...", window,
GTK_FILE_CHOOSER_ACTION_OPEN, GTK_STOCK_CANCEL,
GTK_RESPONSE_CANCEL, GTK_STOCK_OPEN,
GTK_RESPONSE_ACCEPT, NULL);
g_signal_connect(G_OBJECT(widget), "response", G_CALLBACK(
_on_run_choose_activate), run);
widget = gtk_file_chooser_button_new_with_dialog(widget);
gtk_box_pack_start(GTK_BOX(hbox), widget, FALSE, TRUE, 4);
gtk_box_pack_start(GTK_BOX(vbox), hbox, TRUE, FALSE, 4);
widget = gtk_check_button_new_with_label("Run in a terminal");
g_signal_connect(G_OBJECT(widget), "toggled", G_CALLBACK(
_on_run_terminal_toggle), run);
gtk_box_pack_start(GTK_BOX(vbox), widget, FALSE, FALSE, 0);
hbox = gtk_hbox_new(FALSE, 0);
widget = gtk_button_new_from_stock(GTK_STOCK_EXECUTE);
g_signal_connect(G_OBJECT(widget), "clicked", G_CALLBACK(
_on_run_execute), run);
gtk_size_group_add_widget(group, widget);
gtk_box_pack_end(GTK_BOX(hbox), widget, FALSE, TRUE, 4);
widget = gtk_button_new_from_stock(GTK_STOCK_CANCEL);
gtk_size_group_add_widget(group, widget);
g_signal_connect(G_OBJECT(widget), "clicked", G_CALLBACK(
_on_run_cancel), run);
gtk_box_pack_end(GTK_BOX(hbox), widget, FALSE, TRUE, 0);
gtk_box_pack_start(GTK_BOX(vbox), hbox, FALSE, FALSE, 4);
gtk_container_add(GTK_CONTAINER(run->window), vbox);
gtk_widget_show_all(run->window);
return run;
}
static GtkWidget * _new_entry(Config * config)
{
GtkWidget * entry;
char * p;
char const * q;
GtkEntryCompletion * completion;
GtkListStore * store;
int i;
char buf[10];
GtkTreeIter iter;
entry = gtk_entry_new();
if(config == NULL)
return entry;
if((p = _run_get_config_filename()) == NULL)
return entry;
if(config_load(config, p) != 0)
error_print(PACKAGE);
free(p);
completion = gtk_entry_completion_new();
gtk_entry_set_completion(GTK_ENTRY(entry), completion);
g_object_unref(completion);
store = gtk_list_store_new(1, G_TYPE_STRING);
gtk_entry_completion_set_model(completion, GTK_TREE_MODEL(store));
g_object_unref(store);
gtk_entry_completion_set_text_column(completion, 0);
for(i = 0; i < 100; i++)
{
snprintf(buf, sizeof(buf), "%s%d", "command", i);
if((q = config_get(config, "", buf)) == NULL)
continue;
gtk_list_store_append(store, &iter);
gtk_list_store_set(store, &iter, 0, q, -1);
}
return entry;
}
/* run_delete */
static void _run_delete(Run * run)
{
if(run->config != NULL)
config_delete(run->config);
object_delete(run);
}
/* useful */
/* run_error */
static int _run_error(char const * message, int ret)
{
GtkWidget * dialog;
dialog = gtk_message_dialog_new(NULL, 0, GTK_MESSAGE_ERROR,
GTK_BUTTONS_CLOSE, "%s", message);
gtk_window_set_position(GTK_WINDOW(dialog), GTK_WIN_POS_CENTER_ALWAYS);
gtk_window_set_title(GTK_WINDOW(dialog), "Error");
gtk_widget_show(dialog);
gtk_dialog_run(GTK_DIALOG(dialog));
gtk_widget_destroy(dialog);
return ret;
}
/* run_get_config_filename */
static char * _run_get_config_filename(void)
{
char const * homedir;
size_t len;
char * filename;
if((homedir = getenv("HOME")) == NULL)
homedir = g_get_home_dir();
len = strlen(homedir) + 1 + sizeof(RUN_CONFIG_FILE);
if((filename = malloc(len)) == NULL)
return NULL;
snprintf(filename, len, "%s/%s", homedir, RUN_CONFIG_FILE);
return filename;
}
/* callbacks */
/* on_run_closex */
static gboolean _on_run_closex(GtkWidget * widget, GdkEvent * event,
gpointer data)
{
Run * run = data;
gtk_widget_hide(run->window);
gtk_main_quit();
return FALSE;
}
/* on_run_cancel */
static void _on_run_cancel(GtkWidget * widget, gpointer data)
{
Run * run = data;
gtk_widget_hide(run->window);
gtk_main_quit();
}
/* on_run_choose_activate */
static void _on_run_choose_activate(GtkWidget * widget, gint arg1,
gpointer data)
{
Run * run = data;
if(arg1 != GTK_RESPONSE_ACCEPT)
return;
gtk_entry_set_text(GTK_ENTRY(run->entry), gtk_file_chooser_get_filename(
GTK_FILE_CHOOSER(widget)));
}
/* on_run_execute */
static gboolean _execute_idle(gpointer data);
static void _idle_save_config(Run * run);
static void _on_run_execute(GtkWidget * widget, gpointer data)
{
Run * run = data;
char const * path;
path = gtk_entry_get_text(GTK_ENTRY(run->entry));
if((run->pid = fork()) == -1) /* handle error */
{
gtk_widget_hide(run->window);
_run_error(strerror(errno), 0);
gtk_widget_show(run->window);
}
else if(run->pid != 0) /* parent process */
{
gtk_widget_hide(run->window);
g_idle_add(_execute_idle, run);
}
else /* child process */
{
if(run->terminal == TRUE)
execlp("xterm", "xterm", "-e", "sh", "-c", path, NULL);
else
execlp("/bin/sh", "run", "-c", path, NULL);
_exit(127); /* an error occured */
}
}
static gboolean _execute_idle(gpointer data)
{
Run * run = data;
pid_t p;
int status;
if((p = waitpid(run->pid, &status, 0)) == -1) /* XXX blocks Gtk+ */
{
if(errno == ECHILD) /* should not happen */
{
_run_error(strerror(errno), 0);
gtk_main_quit();
return FALSE;
}
if(errno == EINTR)
return TRUE;
_run_error(strerror(errno), 0);
gtk_widget_show(run->window);
return FALSE;
}
if(WIFEXITED(status))
{
if(WEXITSTATUS(status) == 127) /* XXX may mean anything... */
{
_run_error("Child exited with error code 127", 0);
gtk_widget_show(run->window);
return FALSE;
}
_idle_save_config(run);
gtk_main_quit();
}
return FALSE;
}
static void _idle_save_config(Run * run)
{
char const * p;
int i;
char buf[10];
char const * q;
char * filename;
if((filename = _run_get_config_filename()) == NULL)
return;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s()\n", __func__);
#endif
config_reset(run->config);
if(config_load(run->config, filename) != 0)
/* XXX this risks losing the configuration */
error_print(PACKAGE);
p = gtk_entry_get_text(GTK_ENTRY(run->entry));
for(i = 0; i < 100; i++)
{
snprintf(buf, sizeof(buf), "%s%d", "command", i);
q = config_get(run->config, "", buf);
if(q == NULL || strcmp(p, q) != 0)
continue;
free(filename); /* the command is already known */
return;
}
for(i = 0; i < 100; i++)
{
snprintf(buf, sizeof(buf), "%s%d", "command", i);
q = config_get(run->config, "", buf);
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s() config_set(config, "", %s, %s)\n",
__func__, buf, p);
#endif
config_set(run->config, "", buf, p);
if((p = q) == NULL)
break;
}
config_save(run->config, filename);
free(filename);
}
/* on_run_path_activate */
static void _on_run_path_activate(GtkWidget * widget, gpointer data)
{
_on_run_execute(widget, data);
}
/* on_run_terminal_toggle */
static void _on_run_terminal_toggle(GtkWidget * widget, gpointer data)
{
Run * run = data;
run->terminal = gtk_toggle_button_get_active(GTK_TOGGLE_BUTTON(widget));
}
/* main */
int main(int argc, char * argv[])
{
Run * run;
gtk_init(&argc, &argv);
if((run = _run_new()) == NULL)
return _run_error(error_get(), 2);
gtk_main();
_run_delete(run);
return 0;
}