use getopt.h to parse command line options
This commit is contained in:
Mathias Panzenböck
106
src/main.cpp
106
src/main.cpp
@ -20,6 +20,7 @@
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#include <QSystemTrayIcon>
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#include <poll.h>
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#include <cstdlib>
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#include <getopt.h>
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//for making universally available variables
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QHash<int, JoyPad*> available; //to device.h
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@ -79,7 +80,7 @@ int main( int argc, char **argv )
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//start out with no special layout.
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QString layout = "";
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QString layout;
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//by default, we use a tray icon
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bool useTrayIcon = true;
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//this execution wasn't made to update the joystick device list.
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@ -87,56 +88,86 @@ int main( int argc, char **argv )
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bool forceTrayIcon = false;
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//parse command-line options
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for (int i = 1; i < a.argc(); i++) {
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//if a device directory was specified,
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if (QRegExp("-{1,2}device").exactMatch(a.argv()[i])) {
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++i;
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if (i < a.argc()) {
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if (QFile::exists(a.argv()[i])) {
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devdir = a.argv()[i];
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}
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else {
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error("Command Line Argument Problems", "No such directory: " + QString(a.argv()[i]));
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continue;
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}
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}
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}
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//if no-tray mode was requested,
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else if (QRegExp("-{1,2}notray").exactMatch(a.argv()[i])) {
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useTrayIcon = false;
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}
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//if this execution is just meant to update the joystick devices,
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else if (QRegExp("-{1,2}update").exactMatch(a.argv()[i])) {
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update = true;
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}
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//if help was requested,
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else if (QRegExp("-{1,2}h(elp)?").exactMatch(a.argv()[i])) {
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struct option long_options[] = {
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{"help", no_argument, 0, 'h'},
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{"device", required_argument, 0, 'd'},
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{"force-tray", no_argument, 0, 't'},
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{"notray", no_argument, 0, 'T'},
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{"update", no_argument, 0, 'u'},
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{0, 0, 0, 0 }
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};
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for (;;) {
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int c = getopt_long(argc, argv, "hd:tTu", long_options, NULL);
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if (c == -1)
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break;
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switch (c) {
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case 'h':
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printf("%s\n"
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"Usage: qjoypad [--device \"/device/path\"] [--notray] [\"layout name\"]\n"
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"Usage: %s [--device=\"/device/path\"] [--notray|--force-tray] [\"layout name\"]\n"
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"\n"
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"Options:\n"
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" --device path Look for joystick devices in \"path\". This should\n"
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" -h, --help Print this help message.\n"
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" -d, --device=PATH Look for joystick devices in PATH. This should\n"
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" be something like \"/dev/input\" if your game\n"
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" devices are in /dev/input/js0, /dev/input/js1, etc.\n"
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" --notray Do not use a system tray icon. This is useful for\n"
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" -t, --force-tray Forece to use a system tray icon.\n"
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" -T, --notray Do not use a system tray icon. This is useful for\n"
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" window managers that don't support this feature.\n"
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" --update Force a running instance of QJoyPad to update its\n"
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" -u, --update Force a running instance of QJoyPad to update its\n"
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" list of devices and layouts.\n"
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" \"layout name\" Load the given layout in an already running\n"
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" instance of QJoyPad, or start QJoyPad using the\n"
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" given layout.\n", NAME);
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" given layout.\n", NAME, argc > 0 ? argv[0] : "qjoypad");
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return 0;
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case 'd':
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if (QFile::exists(optarg)) {
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devdir = optarg;
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}
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else {
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fprintf(stderr, "No such file or directory: %s\n", optarg);
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return 1;
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} else if(QRegExp("--force-tray").exactMatch(a.argv()[i])) {
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}
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break;
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case 'T':
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useTrayIcon = false;
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break;
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case 't':
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useTrayIcon = true;
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forceTrayIcon = true;
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break;
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case 'u':
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update = true;
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break;
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case '?':
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fprintf(stderr,
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"See `%s --help` for more information\n",
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argc > 0 ? argv[0] : "qjoypad");
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return 1;
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}
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}
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if (optind < argc) {
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layout = argv[optind ++];
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if (optind < argc) {
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fprintf(stderr,
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"Too many arguments.\n"
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"See `%s --help` for more information\n",
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argc > 0 ? argv[0] : "qjoypad");
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return 1;
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}
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//in all other cases, an argument is assumed to be a layout name.
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//note: only the last layout name given will be used.
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else layout = a.argv()[i];
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}
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//if the user specified a layout to use,
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if (layout != "")
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if (!layout.isEmpty())
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{
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//then we try to store that layout in the last-used layout spot, to be
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//loaded by default.
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@ -170,12 +201,13 @@ int main( int argc, char **argv )
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//then prevent two instances from running at once.
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//however, if we are setting the layout or updating the device
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//list, this is not an error and we shouldn't make one!
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if (layout == "" && update == false) error("Instance Error","There is already a running instance of QJoyPad; please close\nthe old instance before starting a new one.");
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if (layout.isEmpty() && update == false)
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error("Instance Error","There is already a running instance of QJoyPad; please close\nthe old instance before starting a new one.");
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else {
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//if one of these is the case, send the approrpriate signal!
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if (update == true)
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kill(pid,SIGUSR1);
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if (layout != "")
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if (!layout.isEmpty())
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kill(pid,SIGIO);
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}
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//and quit. We don't need two instances.
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