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diff --git a/src/lint/linter/ArcanistExternalLinter.php b/src/lint/linter/ArcanistExternalLinter.php
--- a/src/lint/linter/ArcanistExternalLinter.php
+++ b/src/lint/linter/ArcanistExternalLinter.php
@@ -13,6 +13,7 @@
private $bin;
private $interpreter;
private $flags;
+ private $versionRequirement;
/* -( Interpreters, Binaries and Flags )----------------------------------- */
@@ -103,6 +104,18 @@
}
/**
+ * Set the binary's version requirement.
+ *
+ * @param string Version requirement.
+ * @return this
+ * @task bin
+ */
+ final public function setVersionRequirement($version) {
+ $this->versionRequirement = trim($version);
+ return $this;
+ }
+
+ /**
* Return the binary or script to execute. This method synthesizes defaults
* and configuration. You can override the binary with @{method:setBinary}.
*
@@ -259,6 +272,59 @@
}
/**
+ * If a binary version requirement has been specified, compare the version
+ * of the configured binary to the required version, and if the binary's
+ * version is not supported, throw an exception.
+ *
+ * @param string Version string to check.
+ * @return void
+ */
+ final protected function checkBinaryVersion($version) {
+ if (!$this->versionRequirement) {
+ return;
+ }
+
+ if (!$version) {
+ throw new ArcanistMissingLinterException(
+ sprintf(
+ "%s\n%s",
+ pht(
+ 'Linter %s requires %s version %s. Unable to determine the '.
+ 'version that you have installed.',
+ get_class($this),
+ $this->getBinary(),
+ $this->versionRequirement),
+ pht(
+ 'TO INSTALL: %s',
+ $this->getInstallInstructions())));
+ }
+
+ $operator = '==';
+ $compare_to = $this->versionRequirement;
+
+ $matches = null;
+ if (preg_match('/^([<>]=?)\s*(.*)$/', $compare_to, $matches)) {
+ $operator = $matches[0];
+ $compare_to = $matches[1];
+ }
+
+ if (!version_compare($version, $compare_to, $operator)) {
+ throw new ArcanistMissingLinterException(
+ sprintf(
+ "%s\n%s",
+ pht(
+ 'Linter %s requires %s version %s. You have version %s.',
+ get_class($this),
+ $this->getBinary(),
+ $this->versionRequirement,
+ $version),
+ pht(
+ 'TO INSTALL: %s',
+ $this->getInstallInstructions())));
+ }
+ }
+
+ /**
* Get the composed executable command, including the interpreter and binary
* but without flags or paths. This can be used to execute `--version`
* commands.
@@ -308,6 +374,7 @@
$version = $this->getVersion();
if ($version) {
+ $this->checkBinaryVersion($version);
return $version.'-'.json_encode($this->getCommandFlags());
} else {
// Either we failed to parse the version number or the `getVersion`
@@ -395,6 +462,13 @@
'Provide a list of additional flags to pass to the linter on the '.
'command line.'),
),
+ 'version' => array(
+ 'type' => 'optional string',
+ 'help' => pht(
+ 'Specify a version requirement for the binary. The version number '.
+ 'may be prefixed with <, <=, >, >=, or == to specify the version '.
+ 'comparison operator (default: ==).'),
+ ),
);
if ($this->shouldUseInterpreter()) {
@@ -456,6 +530,9 @@
case 'flags':
$this->setFlags($value);
return;
+ case 'version':
+ $this->setVersionRequirement($value);
+ return;
}
return parent::setLinterConfigurationValue($key, $value);

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