gnome-shell/js/misc/util.js
Maxim Ermilov 255d4634a9 util: Fix regex used to match for URLs
Commit a65a0f03d4 changed the literal RegExp to a string-based
RegExp(). As backslashes are treated specially inside strings,
translating an expression as /\s/ to '\s' results in a faulty
regex of /s/, so escape backslashes where necessary.
https://bugzilla.gnome.org/show_bug.cgi?id=639914
2011-01-19 05:06:53 +03:00

176 lines
5.5 KiB
JavaScript

/* -*- mode: js2; js2-basic-offset: 4; indent-tabs-mode: nil -*- */
const Gdk = imports.gi.Gdk;
const Gio = imports.gi.Gio;
const GLib = imports.gi.GLib;
const Shell = imports.gi.Shell;
const Main = imports.ui.main;
const MessageTray = imports.ui.messageTray;
const Gettext = imports.gettext.domain('gnome-shell');
const _ = Gettext.gettext;
/* http://daringfireball.net/2010/07/improved_regex_for_matching_urls */
const _urlRegexp = new RegExp('\\b(([a-z][\\w-]+:(/{1,3}|[a-z0-9%])|www\\d{0,3}[.]|[a-z0-9.\\-]+[.][a-z]{2,4}/)([^\\s()<>]+|\\(([^\\s()<>]+|(\\([^\\s()<>]+\\)))*\\))+(\\(([^\\s()<>]+|(\\([^\\s()<>]+\\)))*\\)|[^\\s`!()\\[\\]{};:\'\\".,<>?«»“”‘’]))', 'gi');
// findUrls:
// @str: string to find URLs in
//
// Searches @str for URLs and returns an array of objects with %url
// properties showing the matched URL string, and %pos properties indicating
// the position within @str where the URL was found.
//
// Return value: the list of match objects, as described above
function findUrls(str) {
let res = [], match;
while ((match = _urlRegexp.exec(str)))
res.push({ url: match[0], pos: match.index });
return res;
}
// spawn:
// @argv: an argv array
//
// Runs @argv in the background, handling any errors that occur
// when trying to start the program.
function spawn(argv) {
try {
trySpawn(argv);
} catch (err) {
_handleSpawnError(argv[0], err);
}
}
// spawnCommandLine:
// @command_line: a command line
//
// Runs @command_line in the background, handling any errors that
// occur when trying to parse or start the program.
function spawnCommandLine(command_line) {
try {
let [success, argc, argv] = GLib.shell_parse_argv(command_line);
trySpawn(argv);
} catch (err) {
_handleSpawnError(command_line, err);
}
}
// spawnDesktop:
// @id: a desktop file ID
//
// Spawns the desktop file identified by @id using startup notification,
// etc, handling any errors that occur when trying to find or start
// the program.
function spawnDesktop(id) {
try {
trySpawnDesktop(id);
} catch (err) {
_handleSpawnError(id, err);
}
}
// trySpawn:
// @argv: an argv array
//
// Runs @argv in the background. If launching @argv fails,
// this will throw an error.
function trySpawn(argv)
{
try {
GLib.spawn_async(null, argv, null,
GLib.SpawnFlags.SEARCH_PATH,
null, null);
} catch (err) {
// The exception from gjs contains an error string like:
// Error invoking GLib.spawn_command_line_async: Failed to
// execute child process "foo" (No such file or directory)
// We are only interested in the part in the parentheses. (And
// we can't pattern match the text, since it gets localized.)
err.message = err.message.replace(/.*\((.+)\)/, '$1');
throw err;
}
}
// trySpawnCommandLine:
// @command_line: a command line
//
// Runs @command_line in the background. If launching @command_line
// fails, this will throw an error.
function trySpawnCommandLine(command_line) {
let success, argc, argv;
try {
[success, argc, argv] = GLib.shell_parse_argv(command_line);
} catch (err) {
// Replace "Error invoking GLib.shell_parse_argv: " with
// something nicer
err.message = err.message.replace(/[^:]*: /, _("Could not parse command:") + "\n");
throw err;
}
trySpawn(argv);
}
// trySpawnDesktop:
// @id: a desktop file ID
//
// Spawns the desktop file identified by @id using startup notification.
// On error, throws an exception.
function trySpawnDesktop(id) {
let app;
// shell_app_system_load_from_desktop_file() will end up returning
// a stupid error message if the desktop file doesn't exist, but
// that's the only case it returns an error for, so we just
// substitute our own error in instead
try {
app = Shell.AppSystem.get_default().load_from_desktop_file(id + '.desktop');
} catch (err) {
throw new Error(_("No such application"));
}
try {
app.launch();
} catch(err) {
// see trySpawn
err.message = err.message.replace(/.*\((.+)\)/, '$1');
throw err;
}
}
function _handleSpawnError(command, err) {
let title = _("Execution of '%s' failed:").format(command);
let source = new MessageTray.SystemNotificationSource();
Main.messageTray.add(source);
let notification = new MessageTray.Notification(source, title, err.message);
notification.setTransient(true);
source.notify(notification);
}
// killall:
// @processName: a process name
//
// Kills @processName. If no process with the given name is found,
// this will fail silently.
function killall(processName) {
try {
// pkill is more portable than killall, but on Linux at least
// it won't match if you pass more than 15 characters of the
// process name... However, if you use the '-f' flag to match
// the entire command line, it will work, but we have to be
// careful in that case that we can match
// '/usr/bin/processName' but not 'gedit processName.c' or
// whatever...
let argv = ['pkill', '-f', '^([^ ]*/)?' + processName + '($| )'];
GLib.spawn_sync(null, argv, null, GLib.SpawnFlags.SEARCH_PATH, null, null);
// It might be useful to return success/failure, but we'd need
// a wrapper around WIFEXITED and WEXITSTATUS. Since none of
// the current callers care, we don't bother.
} catch (e) {
logError(e, 'Failed to kill ' + processName);
}
}