diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..eedccc7
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,4 @@
+.idea/
+vendor/
+composer.lock
+covpf.phar
\ No newline at end of file
diff --git a/composer.json b/composer.json
new file mode 100644
index 0000000..0cd5147
--- /dev/null
+++ b/composer.json
@@ -0,0 +1,26 @@
+{
+  "name": "cooperaj/php-coverage-path-fixer",
+  "description": "Manipulates .cov files path information when source files have moved or are in a different location",
+  "minimum-stability": "stable",
+  "license": "MIT",
+  "authors": [
+    {
+      "name": "Adam Cooper",
+      "email": "adam@acpr.dev"
+    }
+  ],
+
+  "require": {
+    "phpunit/php-code-coverage": "^8.0.0",
+    "symfony/console": "^v5.0.4"
+  },
+  "require-dev": {
+    "phpunit/phpunit": "9.0.1"
+  },
+  "autoload": {
+    "psr-4": {
+      "CoveragePathFixer\\": "src/"
+    }
+  },
+  "bin": [ "covpf" ]
+}
diff --git a/covpf b/covpf
new file mode 100755
index 0000000..89cba7a
--- /dev/null
+++ b/covpf
@@ -0,0 +1,11 @@
+#!/usr/bin/env php
+<?php
+
+declare(strict_types=1);
+
+use CoveragePathFixer\Application;
+
+include 'vendor/autoload.php';
+
+$application = new Application();
+$application->run();
\ No newline at end of file
diff --git a/src/Application.php b/src/Application.php
new file mode 100644
index 0000000..5272a56
--- /dev/null
+++ b/src/Application.php
@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace CoveragePathFixer;
+
+use CoveragePathFixer\Command\ChangePathPrefix;
+use Symfony\Component\Console\Application as ConsoleApplication;
+
+class Application extends ConsoleApplication
+{
+    public function __construct(string $name = 'CoveragePathFixer', string $version = 'UNKNOWN')
+    {
+        parent::__construct($name, $version);
+
+        $command = new ChangePathPrefix();
+        $this->add($command);
+        $this->setDefaultCommand($command->getName(), true);
+    }
+}
\ No newline at end of file
diff --git a/src/Command/ChangePathPrefix.php b/src/Command/ChangePathPrefix.php
new file mode 100644
index 0000000..4586ae3
--- /dev/null
+++ b/src/Command/ChangePathPrefix.php
@@ -0,0 +1,169 @@
+<?php
+
+declare(strict_types=1);
+
+namespace CoveragePathFixer\Command;
+
+use RecursiveDirectoryIterator;
+use RecursiveIteratorIterator;
+use RecursiveRegexIterator;
+use RegexIterator;
+use SebastianBergmann\CodeCoverage\CodeCoverage;
+use SebastianBergmann\CodeCoverage\Filter;
+use SebastianBergmann\CodeCoverage\Report\Clover;
+use SebastianBergmann\CodeCoverage\Report\PHP;
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Input\InputArgument;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+
+class ChangePathPrefix extends Command
+{
+    protected static $defaultName = 'fix';
+
+    protected function configure(): void
+    {
+        $this->setDescription('Swaps a given path prefix with another in your coverage files')
+            ->setHelp(
+                'This command will recursively search for coverage (.cov) files and alter the code ' .
+                'paths held within such that the files can be found. \n\n' .
+                'e.g. "/app/src" can be swapped with e.g. "/home/ci/src"'
+            )
+
+            ->addArgument(
+                'directory_to_search',
+                InputArgument::REQUIRED,
+                'The directory to recursively search for ".cov" files',
+            )
+
+            ->addArgument(
+                'original_prefix',
+                InputArgument::REQUIRED,
+                'The orginal path prefix e.g. "/app/src"'
+            )
+
+            ->addArgument(
+                'replacement_prefix',
+                InputArgument::REQUIRED,
+                'The new path prefix e.g. "/home/ci/src"'
+            )
+
+            ->addOption(
+                'merge',
+                'm',
+                InputOption::VALUE_REQUIRED,
+                'Merge the discovered files into the specified single output coverage (.cov) file'
+            )
+
+            ->addOption(
+                'clover',
+                'c',
+                InputOption::VALUE_NONE,
+                'Output an additional clover format coverage file alongside each .cov file that is processed'
+            );
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output): int
+    {
+        try {
+            $files = $this->findCoverageFiles($input->getArgument('directory_to_search'));
+
+            $files = $this->iterateCoverageFiles(
+                $files,
+                $input->getArgument('original_prefix'),
+                $input->getArgument('replacement_prefix')
+            );
+
+            if ($path = $input->getOption('merge')) {
+                $files = $this->mergeCoverageFiles($files, $path);
+            }
+
+            $this->outputCoverageFiles($files, $input->getOption('clover'));
+        } catch (\Exception $ex) {
+            return $ex->getCode();
+        }
+
+        return 0;
+    }
+
+    private function changePrefix(array $data, string $originalPrefix, string $replacementPrefix): array
+    {
+        return array_combine(array_map(function($el) use ($originalPrefix, $replacementPrefix) {
+            $el = preg_replace('#^' . $originalPrefix . '#', $replacementPrefix, $el);
+            return $el;
+        }, array_keys($data)), array_values($data));
+    }
+
+    private function iterateCoverageFiles(array $files, string $originalPrefix, string $replacementPrefix): array
+    {
+        return array_map(function(array $file) use ($originalPrefix, $replacementPrefix) {
+            $coverage = $this->loadCoverageFile($file[0]);
+
+            $data = $this->changePrefix($coverage->getData(), $originalPrefix, $replacementPrefix);
+            $whiteList = $this->changePrefix(
+                $coverage->filter()->getWhitelistedFiles(),
+                $originalPrefix,
+                $replacementPrefix
+            );
+
+            $filter = new Filter();
+            $filter->setWhitelistedFiles($whiteList);
+
+            $coverage = new CodeCoverage(null, $filter);
+            $coverage->setData($data);
+
+            return $coverage;
+        }, $files);
+    }
+
+    private function findCoverageFiles(string $directory): array
+    {
+        $path = realpath($directory);
+
+        $directory = new RecursiveDirectoryIterator($path);
+        $iterator = new RecursiveIteratorIterator($directory);
+        $filtered = new RegexIterator($iterator, '/^.+\.cov$/i', RecursiveRegexIterator::GET_MATCH);
+
+        return iterator_to_array($filtered);
+    }
+
+    private function loadCoverageFile(string $file): CodeCoverage
+    {
+        $coverage = include $file;
+
+        if (!($coverage instanceof CodeCoverage)) {
+            unset($coverage);
+            throw new \Exception('File with coverage extension not resolved to CodeCoverage class');
+        }
+
+        return $coverage;
+    }
+
+    private function mergeCoverageFiles(array $files, string $path): array
+    {
+        $coverage = new CodeCoverage();
+
+        foreach ($files as $file => $coverage) {
+            $coverage->merge($coverage);
+        }
+
+        return [$path => $coverage];
+    }
+
+    private function outputCoverageFiles(array $files, bool $asClover = false): void
+    {
+        array_walk($files, function($coverage, $path) use ($asClover) {
+            if ($asClover) {
+                $filename = basename($path, '.cov');
+                $directory = dirname($path);
+
+                $reportWriter = new Clover();
+                $reportWriter->process($coverage, $directory . DIRECTORY_SEPARATOR . $filename . '.xml');
+            }
+
+            $reportWriter = new PHP();
+            $reportWriter->process($coverage, $path);
+        });
+    }
+}
\ No newline at end of file