C++ parseArg函数代码示例

static PyObject *t_resourcebundle_get(t_resourcebundle *self, PyObject *arg)
{
    UErrorCode status = U_ZERO_ERROR;
    charsArg key;
    int i;

    if (!parseArg(arg, "i", &i))
    {
        ResourceBundle rb = self->object->get(i, status);

        if (U_FAILURE(status))
            return ICUException(status).reportError();

        return wrap_ResourceBundle(rb);
    }

    if (!parseArg(arg, "n", &key))
    {
        ResourceBundle rb = self->object->get(key, status);

        if (U_FAILURE(status))
            return ICUException(status).reportError();

        return wrap_ResourceBundle(rb);
    }

    return PyErr_SetArgsError((PyObject *) self, "get", arg);
}

jboolean rvmInitOptions(int argc, char* argv[], Options* options, jboolean ignoreRvmArgs) {
    char path[PATH_MAX];
    if (!realpath(argv[0], path)) {
        return FALSE;
    }

    strcpy(options->executablePath, path);

    jint i = strlen(path);
    while (i >= 0 && path[i] != '/') {
        path[i--] = '\0';
    }
    if (i >= 0 && path[i] == '/') {
        path[i] = '\0';
    }

    strcpy(options->basePath, path);

    // Look for a robovm.ini next to the executable
    strcat(path, "/robovm.ini");
    FILE* f = fopen(path, "r");
    if (f) {
        char* line = NULL;
        size_t linecap = 0;
        ssize_t linelen;
        while ((linelen = getline(&line, &linecap, f)) > 0) {
            line = trim(line);
            if (strlen(line) > 0 && line[0] != '#') {
                parseArg(line, options);
            }
        }
        if (line) {
            free(line);
        }
        fclose(f);
    }

    jint firstJavaArg = 1;
    for (i = 1; i < argc; i++) {
        if (startsWith(argv[i], "-rvm:")) {
            if (!ignoreRvmArgs) {
                char* arg = &argv[i][5];
                parseArg(arg, options);
            }
            firstJavaArg++;
        } else {
            break;
        }
    }

    options->commandLineArgs = NULL;
    options->commandLineArgsCount = argc - firstJavaArg;
    if (options->commandLineArgsCount > 0) {
        options->commandLineArgs = &argv[firstJavaArg];
    }

    return options->mainClass != NULL;
}

static PyObject *t_regexpattern_richcmp(t_regexpattern *self,
                                        PyObject *arg, int op)
{
    RegexPattern *pattern;
    int b = 0;

    if (!parseArg(arg, "P", TYPE_CLASSID(RegexPattern), &pattern))
    {
        switch (op) {
          case Py_EQ:
          case Py_NE:
            b = *self->object == *pattern;
            if (op == Py_EQ)
                Py_RETURN_BOOL(b);
            Py_RETURN_BOOL(!b);
          case Py_LT:
          case Py_LE:
          case Py_GT:
          case Py_GE:
            PyErr_SetNone(PyExc_NotImplementedError);
            return NULL;
        }
    }

    return PyErr_SetArgsError((PyObject *) self, "__richcmp__", arg);
}

static PyObject *t_forwardcharacteriterator_richcmp(t_forwardcharacteriterator *self, PyObject *arg, int op)
{
    int b = 0;
    ForwardCharacterIterator *i;

    if (!parseArg(arg, "P", TYPE_ID(ForwardCharacterIterator), &i))
    {
        switch (op) {
          case Py_EQ:
          case Py_NE:
            b = *self->object == *i;
            if (op == Py_EQ)
                Py_RETURN_BOOL(b);
            Py_RETURN_BOOL(!b);
          case Py_LT:
          case Py_LE:
          case Py_GT:
          case Py_GE:
            PyErr_SetNone(PyExc_NotImplementedError);
            return NULL;
        }
    }

    return PyErr_SetArgsError((PyObject *) self, "__richcmp__", arg);
}

 void parseLoop (void)
 {
     char* cnd;
     const char* cmd[MAX_ARGS];
     char input[MAX_BUFFER];
     int  argc;
     
     do {
         clean(cmd);
         argc = parseArg(cnd, cmd, input);
         if (argc == 0) {
             continue;
         }
         
         // Is the poor soul asking for help ? Give him some succour
         if (strcmp(cmd[0], "help") == 0 ||
             strcmp(cmd[0], "?") == 0) {
             help();
             continue;
         }
         
         // Are we done ?
         if (strcmp(cmd[0], "exit") == 0 || strcmp(cmd[0], "quit") == 0 ) {
             break;
         }
         execute(argc, cmd);
     } while (true);
     
     return;
 }

inline void parseAndSet_b(const TString& input, TString arg, bool& value) {
  TString newval = parseArg(input, arg);
  if (!newval.IsNull()) {
    if (newval.IsBin()) value = newval.Atoi();
    else if (newval == "true") value = true;
    else if (newval == "false") value = false;
  }
}

int main(int argc, char* argv[])
{
    parseArg();
    connectToBootRom();
    dlBootLoader();

    return 0;
}

void
CApp::parseArgs(int argc, const char* const* argv, int& i)
{
	// about these use of assert() here:
	// previously an /analyze warning was displayed if we only used assert and
	// did not return on failure. however, this warning does not appear to show
	// any more (could be because new compiler args have been added).
	// the asserts are programmer benefit only; the os should never pass 0 args,
	// because the first is always the binary name. the only way assert would
	// evaluate to true, is if this parse function were implemented incorrectly,
	// which is unlikely because it's old code and has a specific use.
	// we should avoid using anything other than assert here, because it will
	// look like important code, which it's not really.
	assert(argsBase().m_pname != NULL);
	assert(argv != NULL);
	assert(argc >= 1);


	// set defaults
	argsBase().m_name = ARCH->getHostName();
    LOG((CLOG_INFO "CApp::parseArgs call"));
	// parse options
	for (i = 1; i < argc; ++i) {

		if (parseArg(argc, argv, i)) {
			continue;
		}

		else if (isArg(i, argc, argv, "--", NULL)) {
			// remaining arguments are not options
			++i;
			break;
		}

		else if (argv[i][0] == '-') {
			std::cerr << "Unrecognized option: " << argv[i] << std::endl;
			m_bye(kExitArgs);
		}

		else {
			// this and remaining arguments are not options
			break;
		}
	}

#if SYSAPI_WIN32
	// suggest that user installs as a windows service. when launched as
	// service, process should automatically detect that it should run in
	// daemon mode.
	if (argsBase().m_daemon) {
		LOG((CLOG_ERR
			"The --daemon argument is not supported on Windows. "
			"Instead, install %s as a service (--service install).",
			argsBase().m_pname));
		m_bye(kExitArgs);
	}
#endif
}

static PyObject *t_collationelementiterator_tertiaryOrder(PyTypeObject *type, PyObject *arg)
{
    int i;

    if (!parseArg(arg, "i", &i))
        return PyInt_FromLong(CollationElementIterator::tertiaryOrder(i));

    return PyErr_SetArgsError(type, "tertiaryOrder", arg);
}

static PyObject *t_searchiterator_setText(t_searchiterator *self, PyObject *arg)
{
    UnicodeString *u;
    CharacterIterator *chars;

    if (!parseArg(arg, "W", &u, &self->text))
    {
        STATUS_CALL(self->object->setText(*u, status)); /* ref'd */
        Py_RETURN_NONE;
    }
    else if (!parseArg(arg, "P", TYPE_ID(CharacterIterator), &chars))
    {
        STATUS_CALL(self->object->setText(*chars, status)); /* copied */
        Py_RETURN_NONE;
    }

    return PyErr_SetArgsError((PyObject *) self, "setText", arg);
}

int main(int argc, char *argv[])
{    
    // Задание кодировки приложения
#ifndef QT_NO_TEXTCODEC    
    QTextCodec::setCodecForCStrings(QTextCodec::codecForName("UTF-8"));
    QTextCodec::setCodecForTr(QTextCodec::codecForName("UTF-8"));
    QTextCodec::setCodecForLocale(QTextCodec::codecForName("UTF-8"));
#endif
    
    /// Параметр -debug влияет на вывод qDebug() в консоль.
    parseArg(argc, argv);
    
    QApplication app(argc, argv);
    
    // Заполняем глобальные переменные
    QFileInfo mainFile(app.applicationFilePath());
    
    if (app.applicationName().isEmpty()) {
        app.setApplicationName( mainFile.baseName() );
    }

    if (app.applicationVersion().isEmpty()) {
        qApp->setApplicationVersion(QString("%1.%2.%3").arg(VERSION_MAJOR).arg(VERSION_MINOR).arg(VERSION_PATCH));
    }

    QDir *mainDir = new QDir(SettingsFile::getDefaultUserDataPath());
    mainDir->mkpath(mainDir->path());
    delete mainDir;

    // Перенаправляем вывод отладочной информации в файл
    // On Unix: Projects > Run Settings > Run in terminal
    qInstallMsgHandler(myMessageOutput);
    
    // Инициируем перевод через Qt Linguist
    const QString localeFile = SettingsFile::getDefaultResourcePath()
            + "/translations/"
            + mainFile.baseName()
            + "_"
            + QLocale::system().name();
    QTranslator translator;
    if (!translator.load( localeFile )) {
        qDebug() << "Can't load QM (TS):" << localeFile;
    }
    app.installTranslator(&translator);
    
    // Для Win32 указываем искать плагины в директории с приложением
#if defined(Q_WS_WIN32)
    app.addLibraryPath(app.applicationDirPath());
#endif
    
    MainWindow w;
    w.show();
    return app.exec();
}

static PyObject *t_stringsearch_setPattern(t_stringsearch *self, PyObject *arg)
{
    UnicodeString *u, _u;

    if (!parseArg(arg, "S", &u, &_u))
    {
        STATUS_CALL(self->object->setPattern(*u, status)); /* copied */
        Py_RETURN_NONE;
    }

    return PyErr_SetArgsError((PyObject *) self, "setPattern", arg);
}

static PyObject *t_regexmatcher_replaceAll(t_regexmatcher *self, PyObject *arg)
{
    UnicodeString *u, _u, result;

    if (!parseArg(arg, "S", &u, &_u))
    {
        STATUS_CALL(result = self->object->replaceAll(*u, status));
        return PyUnicode_FromUnicodeString(&result);
    }

    return PyErr_SetArgsError((PyObject *) self, "replaceAll", arg);
}

static PyObject *t_locale_removeKeywordValue(t_locale *self, PyObject *arg)
{
    charsArg name;

    if (!parseArg(arg, "n", &name))
    {
        STATUS_CALL(self->object->setKeywordValue(name, "", status));
        Py_RETURN_NONE;
    }

    return PyErr_SetArgsError((PyObject *) self, "removeKeywordValue", arg);
}

Formattable *toFormattable(PyObject *arg)
{
    UDate date;
    double d;
    int i;
    PY_LONG_LONG l;
    UnicodeString *u;
    UnicodeString _u;
    char *s;

    if (!parseArg(arg, "d", &d))
        return new Formattable(d);

    if (!parseArg(arg, "i", &i))
        return new Formattable(i);

    if (!parseArg(arg, "L", &l))
      return new Formattable((int64_t) l);

    if (!parseArg(arg, "c", &s))
        return new Formattable(s);

    if (!parseArg(arg, "S", &u, &_u))
        return new Formattable(*u);

    if (!parseArg(arg, "E", &date))
        return new Formattable(date, Formattable::kIsDate);

    return NULL;
}