2 * Copyright © 2010 Codethink Limited
4 * This program is free software: you can redistribute it and/or modify
5 * it under the terms of the GNU Lesser General Public License as
6 * published by the Free Software Foundation; either version 2 of the
7 * licence or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful, but
10 * WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307,
19 * Authors: Ryan Lortie <desrt@desrt.ca>
24 #include "gapplicationcommandline.h"
31 G_DEFINE_TYPE (GApplicationCommandLine, g_application_command_line, G_TYPE_OBJECT)
34 * SECTION:gapplicationcommandline
35 * @title: GApplicationCommandLine
36 * @short_description: A command-line invocation of an application
37 * @see_also: #GApplication
39 * #GApplicationCommandLine represents a command-line invocation of
40 * an application. It is created by #GApplication and emitted
41 * in the #GApplication::command-line signal and virtual function.
43 * The class contains the list of arguments that the program was invoked
44 * with. It is also possible to query if the commandline invocation was
45 * local (ie: the current process is running in direct response to the
46 * invocation) or remote (ie: some other process forwarded the
47 * commandline to this process).
49 * The exit status of the originally-invoked process may be set and
50 * messages can be printed to stdout or stderr of that process. The
51 * lifecycle of the originally-invoked process is tied to the lifecycle
52 * of this object (ie: the process exits when the last reference is
55 * <example id="gapplication-example-cmdline"><title>Handling commandline arguments with GApplication</title>
57 * <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" parse="text" href="../../../../gio/tests/gapplication-example-cmdline.c">
58 * <xi:fallback>FIXME: MISSING XINCLUDE CONTENT</xi:fallback>
63 * <example id="gapplication-example-cmdline2"><title>Complicated commandline handling</title>
65 * <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" parse="text" href="../../../../gio/tests/gapplication-example-cmdline2.c">
66 * <xi:fallback>FIXME: MISSING XINCLUDE CONTENT</xi:fallback>
80 struct _GApplicationCommandLinePrivate
82 GVariant *platform_data;
86 const gchar **environ;
90 /* All subclasses represent remote invocations of some kind. */
91 #define IS_REMOTE(cmdline) (G_TYPE_FROM_INSTANCE (cmdline) != \
92 G_TYPE_APPLICATION_COMMAND_LINE)
95 grok_platform_data (GApplicationCommandLine *cmdline)
101 g_variant_iter_init (&iter, cmdline->priv->platform_data);
103 while (g_variant_iter_loop (&iter, "{&sv}", &key, &value))
104 if (strcmp (key, "cwd") == 0)
106 if (!cmdline->priv->cwd)
107 cmdline->priv->cwd = g_variant_ref (value);
110 else if (strcmp (key, "environ") == 0)
112 if (!cmdline->priv->environ)
113 cmdline->priv->environ =
114 g_variant_get_bytestring_array (value, NULL);
119 g_application_command_line_real_print_literal (GApplicationCommandLine *cmdline,
120 const gchar *message)
122 g_print ("%s\n", message);
126 g_application_command_line_real_printerr_literal (GApplicationCommandLine *cmdline,
127 const gchar *message)
129 g_printerr ("%s\n", message);
133 g_application_command_line_get_property (GObject *object,
138 GApplicationCommandLine *cmdline = G_APPLICATION_COMMAND_LINE (object);
143 g_value_set_variant (value, cmdline->priv->arguments);
146 case PROP_PLATFORM_DATA:
147 g_value_set_variant (value, cmdline->priv->platform_data);
151 g_value_set_boolean (value, IS_REMOTE (cmdline));
155 g_assert_not_reached ();
160 g_application_command_line_set_property (GObject *object,
165 GApplicationCommandLine *cmdline = G_APPLICATION_COMMAND_LINE (object);
170 g_assert (cmdline->priv->arguments == NULL);
171 cmdline->priv->arguments = g_value_dup_variant (value);
174 case PROP_PLATFORM_DATA:
175 g_assert (cmdline->priv->platform_data == NULL);
176 cmdline->priv->platform_data = g_value_dup_variant (value);
177 if (cmdline->priv->platform_data != NULL)
178 grok_platform_data (cmdline);
182 g_assert_not_reached ();
187 g_application_command_line_finalize (GObject *object)
189 GApplicationCommandLine *cmdline = G_APPLICATION_COMMAND_LINE (object);
191 if (cmdline->priv->platform_data)
192 g_variant_unref (cmdline->priv->platform_data);
193 if (cmdline->priv->arguments)
194 g_variant_unref (cmdline->priv->arguments);
195 if (cmdline->priv->cwd)
196 g_variant_unref (cmdline->priv->cwd);
198 G_OBJECT_CLASS (g_application_command_line_parent_class)
203 g_application_command_line_init (GApplicationCommandLine *cmdline)
206 G_TYPE_INSTANCE_GET_PRIVATE (cmdline,
207 G_TYPE_APPLICATION_COMMAND_LINE,
208 GApplicationCommandLinePrivate);
212 g_application_command_line_class_init (GApplicationCommandLineClass *class)
214 GObjectClass *object_class = G_OBJECT_CLASS (class);
216 object_class->get_property = g_application_command_line_get_property;
217 object_class->set_property = g_application_command_line_set_property;
218 object_class->finalize = g_application_command_line_finalize;
219 class->printerr_literal = g_application_command_line_real_printerr_literal;
220 class->print_literal = g_application_command_line_real_print_literal;
222 g_object_class_install_property (object_class, PROP_ARGUMENTS,
223 g_param_spec_variant ("arguments",
224 P_("Commandline arguments"),
225 P_("The commandline that caused this ::command-line signal emission"),
226 G_VARIANT_TYPE_BYTESTRING_ARRAY, NULL,
227 G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY |
228 G_PARAM_STATIC_STRINGS));
230 g_object_class_install_property (object_class, PROP_PLATFORM_DATA,
231 g_param_spec_variant ("platform-data",
233 P_("Platform-specific data for the commandline"),
234 G_VARIANT_TYPE ("a{sv}"), NULL,
235 G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY |
236 G_PARAM_STATIC_STRINGS));
238 g_object_class_install_property (object_class, PROP_IS_REMOTE,
239 g_param_spec_boolean ("is-remote",
241 P_("TRUE if this is a remote commandline"),
243 G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
245 g_type_class_add_private (class, sizeof (GApplicationCommandLinePrivate));
250 * g_application_command_line_get_arguments:
251 * @cmdline: a #GApplicationCommandLine
252 * @argc: (out): the length of the arguments array, or %NULL
254 * Gets the list of arguments that was passed on the command line.
256 * The strings in the array may contain non-utf8 data.
258 * The return value is %NULL-terminated and should be freed using
261 * Returns: (array length=argc) (transfer full): the string array
262 * containing the arguments (the argv)
267 g_application_command_line_get_arguments (GApplicationCommandLine *cmdline,
273 g_return_val_if_fail (G_IS_APPLICATION_COMMAND_LINE (cmdline), NULL);
275 argv = g_variant_dup_bytestring_array (cmdline->priv->arguments, &len);
284 * g_application_command_line_get_cwd:
285 * @cmdline: a #GApplicationCommandLine
287 * Gets the working directory of the command line invocation. The
288 * string may contain non-utf8 data.
290 * It is possible that the remote application did not send a working
291 * directory, so this may be %NULL.
293 * The return value should not be modified or freed and is valid for as
294 * long as @cmdline exists.
296 * Returns: the current directory, or %NULL
301 g_application_command_line_get_cwd (GApplicationCommandLine *cmdline)
303 if (cmdline->priv->cwd)
304 return g_variant_get_bytestring (cmdline->priv->cwd);
310 * g_application_command_line_get_environ:
311 * @cmdline: a #GApplicationCommandLine
313 * Gets the contents of the 'environ' variable of the command line
314 * invocation, as would be returned by g_get_environ(). The strings may
315 * contain non-utf8 data.
317 * The remote application usually does not send an environment. Use
318 * %G_APPLICATION_SEND_ENVIRONMENT to affect that. Even with this flag
319 * set it is possible that the environment is still not available (due
320 * to invocation messages from other applications).
322 * The return value should not be modified or freed and is valid for as
323 * long as @cmdline exists.
325 * Returns: (array zero-terminated=1) (transfer none): the environment
326 * strings, or %NULL if they were not sent
330 const gchar * const *
331 g_application_command_line_get_environ (GApplicationCommandLine *cmdline)
333 return cmdline->priv->environ;
337 * g_application_command_line_getenv:
338 * @cmdline: a #GApplicationCommandLine
339 * @name: the environment variable to get
341 * Gets the value of a particular environment variable of the command
342 * line invocation, as would be returned by g_getenv(). The strings may
343 * contain non-utf8 data.
345 * The remote application usually does not send an environment. Use
346 * %G_APPLICATION_SEND_ENVIRONMENT to affect that. Even with this flag
347 * set it is possible that the environment is still not available (due
348 * to invocation messages from other applications).
350 * The return value should not be modified or freed and is valid for as
351 * long as @cmdline exists.
353 * Returns: the value of the variable, or %NULL if unset or unsent
358 g_application_command_line_getenv (GApplicationCommandLine *cmdline,
361 gint length = strlen (name);
364 /* TODO: expand on windows */
365 if (cmdline->priv->environ)
366 for (i = 0; cmdline->priv->environ[i]; i++)
367 if (strncmp (cmdline->priv->environ[i], name, length) == 0 &&
368 cmdline->priv->environ[i][length] == '=')
369 return cmdline->priv->environ[i] + length + 1;
375 * g_application_command_line_get_is_remote:
376 * @cmdline: a #GApplicationCommandLine
378 * Determines if @cmdline represents a remote invocation.
380 * Returns: %TRUE if the invocation was remote
385 g_application_command_line_get_is_remote (GApplicationCommandLine *cmdline)
387 return IS_REMOTE (cmdline);
391 * g_application_command_line_print:
392 * @cmdline: a #GApplicationCommandLine
393 * @format: a printf-style format string
394 * @...: arguments, as per @format
396 * Formats a message and prints it using the stdout print handler in the
399 * If @cmdline is a local invocation then this is exactly equivalent to
400 * g_print(). If @cmdline is remote then this is equivalent to calling
401 * g_print() in the invoking process.
406 g_application_command_line_print (GApplicationCommandLine *cmdline,
413 g_return_if_fail (G_IS_APPLICATION_COMMAND_LINE (cmdline));
414 g_return_if_fail (format != NULL);
416 va_start (ap, format);
417 message = g_strdup_vprintf (format, ap);
420 G_APPLICATION_COMMAND_LINE_GET_CLASS (cmdline)
421 ->print_literal (cmdline, message);
426 * g_application_command_line_printerr:
427 * @cmdline: a #GApplicationCommandLine
428 * @format: a printf-style format string
429 * @...: arguments, as per @format
431 * Formats a message and prints it using the stderr print handler in the
434 * If @cmdline is a local invocation then this is exactly equivalent to
435 * g_printerr(). If @cmdline is remote then this is equivalent to
436 * calling g_printerr() in the invoking process.
441 g_application_command_line_printerr (GApplicationCommandLine *cmdline,
448 g_return_if_fail (G_IS_APPLICATION_COMMAND_LINE (cmdline));
449 g_return_if_fail (format != NULL);
451 va_start (ap, format);
452 message = g_strdup_vprintf (format, ap);
455 G_APPLICATION_COMMAND_LINE_GET_CLASS (cmdline)
456 ->printerr_literal (cmdline, message);
461 * g_application_command_line_set_exit_status:
462 * @cmdline: a #GApplicationCommandLine
463 * @exit_status: the exit status
465 * Sets the exit status that will be used when the invoking process
468 * The return value of the #GApplication::command-line signal is
469 * passed to this function when the handler returns. This is the usual
470 * way of setting the exit status.
472 * In the event that you want the remote invocation to continue running
473 * and want to decide on the exit status in the future, you can use this
474 * call. For the case of a remote invocation, the remote process will
475 * typically exit when the last reference is dropped on @cmdline. The
476 * exit status of the remote process will be equal to the last value
477 * that was set with this function.
479 * In the case that the commandline invocation is local, the situation
480 * is slightly more complicated. If the commandline invocation results
481 * in the mainloop running (ie: because the use-count of the application
482 * increased to a non-zero value) then the application is considered to
483 * have been 'successful' in a certain sense, and the exit status is
484 * always zero. If the application use count is zero, though, the exit
485 * status of the local #GApplicationCommandLine is used.
490 g_application_command_line_set_exit_status (GApplicationCommandLine *cmdline,
493 g_return_if_fail (G_IS_APPLICATION_COMMAND_LINE (cmdline));
495 cmdline->priv->exit_status = exit_status;
499 * g_application_command_line_get_exit_status:
500 * @cmdline: a #GApplicationCommandLine
502 * Gets the exit status of @cmdline. See
503 * g_application_command_line_set_exit_status() for more information.
505 * Returns: the exit status
510 g_application_command_line_get_exit_status (GApplicationCommandLine *cmdline)
512 g_return_val_if_fail (G_IS_APPLICATION_COMMAND_LINE (cmdline), -1);
514 return cmdline->priv->exit_status;
518 * g_application_command_line_get_platform_data:
519 * @cmdline: #GApplicationCommandLine
521 * Gets the platform data associated with the invocation of @cmdline.
523 * This is a #GVariant dictionary containing information about the
524 * context in which the invocation occured. It typically contains
525 * information like the current working directory and the startup
528 * For local invocation, it will be %NULL.
530 * Returns: the platform data, or %NULL
535 g_application_command_line_get_platform_data (GApplicationCommandLine *cmdline)
537 g_return_val_if_fail (G_IS_APPLICATION_COMMAND_LINE (cmdline), NULL);
539 if (cmdline->priv->platform_data)
540 return g_variant_ref (cmdline->priv->platform_data);