phpcs does not work when run from WSL drives

[gwharton]

Describe the bug
When the project (including phpcs vendor folder) is run from a windows network drive (either mapped to drive, or by Path) phpcs cannot be run as it believes the config is not readable.

Code sample
N/A

Custom ruleset
N/A

To reproduce
Steps to reproduce the behavior:

1. Create project on mapped network drive
2. Run phpcs --version
3. See error message displayed

ERROR: Config file \\WSL$\UBUNTU\home\ubuntu\www\vendor\squizlabs\php_codesniffer\CodeSniffer.conf is not readable

ERROR: Config file U:\home\ubuntu\www\vendor\squizlabs\php_codesniffer\CodeSniffer.conf is not readable

Expected behavior
It should work

Versions (please complete the following information):

• OS: Windows 10 with WSL
• PHP: 7.4.21
• PHPCS: 3.6.0
• Standard: N/A

Additional context
It is the same issue with php's is_readable function that was worked round with this fix. d56e167

is_readable is called here.

PHP_CodeSniffer/src/Config.php

Lines 1659 to 1662 in b6d6556

	if (is_readable($configFile) === false) {
	$error = 'ERROR: Config file '.$configFile.' is not readable'.PHP_EOL.PHP_EOL;
	throw new DeepExitException($error, 3);
	}

is_readable should be changed to Util\Common::isReadable as per previous fix

[gwharton]

FIX

--- ./src/Config.orig.php	2021-07-15 10:47:29.220000000 +0100
+++ ./src/Config.php	2021-07-15 10:45:27.980000000 +0100
@@ -1656,7 +1656,7 @@
             return [];
         }

-        if (is_readable($configFile) === false) {
+        if (Util\Common::isReadable($configFile) === false) {
             $error = 'ERROR: Config file '.$configFile.' is not readable'.PHP_EOL.PHP_EOL;
             throw new DeepExitException($error, 3);
         }

[jrfnl]

@gwharton I've created PR #3428 to address this. Testing appreciated.

[gsherwood]

Thanks for this bug report and for posting one of the fixes.