#!/usr/bin/php

<?php

/**

* This script is designed to be used as an XML Lint (syntax) check in a precommit hook for Mercurial.

*

* To get this script working, please put the following in your project's hgrc file, or in your user's hgrc

* and place this script somewhere relative to your home directory and ensure the path below is updated to match.

*

* So, in your .hg/hgrc file for your project, or your user file at ~/.hgrc add something similar to this:

*

* [hooks]

* pretxncommit.xml_lint_check = ~/bin/xml-lint-check-pretxncommit.php

*/

/**

* Config options

*/

// If you don't want to see the output of this lint checker while you're committing, set verbose = FALSE

$verbose = true;

// Please specify the path to mercurial here

$hgpath = '/usr/bin/hg';

$xmllintpath = '/usr/bin/xmllint';

// Check files with these extensions only

$xml_extensions = array('xml');

/**

* Main Lint Check Logic Below

*/

$fail = FALSE;

verbose("Beginning XML Lint Check");

// Getting the revision we're committing (the tip)

exec($hgpath.' tip', $output);

$temp = explode(':', $output[0]);

$revision = intval(trim($temp[1]));

verbose(" on revision: $revision");

// Getting files changed

$output = array();

verbose("Getting files changed or added...");

exec("hg status --change $revision --added --modified", $output);

verbose(" found ".count($output)." files changed or added: \n----------\n".implode("\n", $output)."\n----------");

// Build our array of files we need to parse

$files = array();

foreach ($output as $file) {

if (strlen($file) > 2) {

$file = substr($file, 2);

if (is_file($file)) {

$parts = pathinfo($file);

if (!isset($parts['extension']) || !in_array($parts['extension'], $xml_extensions)) {

verbose("Not a known XML extension for file: '$file'");

continue;

}

verbose("Checking XML Syntax for: '$file'...");

$output = array();

exec($xmllintpath . ' --noout '.escapeshellarg($file), $output, $retval);

if ($retval === 0) {

verbose(" Successfully passed XML Lint Check!");

} else {

echo "XML Parsing Error Detected in file '$file'\n----------";

echo implode("\n", $output)."\n----------\n";

$fail = TRUE;

}

}

}

}

// If any file failed, return failure so it doesn't commit

if ($fail) {

exit(255);

}

exit(0);

/**

* Verbose output if enabled

*/

function verbose($message) {

}