D21799.id51958.diff
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	diff --git a/src/parser/argument/PhutilArgumentParser.php b/src/parser/argument/PhutilArgumentParser.php
	--- a/src/parser/argument/PhutilArgumentParser.php
	+++ b/src/parser/argument/PhutilArgumentParser.php
	@@ -625,6 +625,33 @@
	return $this->specs[$name]->getDefault();
	}

	+ public function getArgAsInteger($name) {
	+ $value = $this->getArg($name);
	+
	+ if ($value === null) {
	+ return $value;
	+ }
	+
	+ if (!preg_match('/^-?\d+\z/', $value)) {
	+ throw new PhutilArgumentUsageException(
	+ pht(
	+ 'Parameter provided to argument "--%s" must be an integer.',
	+ $name));
	+ }
	+
	+ $intvalue = (int)$value;
	+
	+ if (phutil_string_cast($intvalue) !== phutil_string_cast($value)) {
	+ throw new PhutilArgumentUsageException(
	+ pht(
	+ 'Parameter provided to argument "--%s" is too large to '.
	+ 'parse as an integer.',
	+ $name));
	+ }
	+
	+ return $intvalue;
	+ }
	+
	public function getUnconsumedArgumentVector() {
	return $this->argv;
	}