1. <?php
  3. /**
  4. * Resolves dependencies of text files.
  5. *
  6. * @param array $files An array of file paths.
  7. * @return array An associative array where keys are file paths and values are arrays of dependencies.
  8. * Returns an empty array if input is invalid.
  9. */
  10. function resolveDependencies(array $files): array
  11. {
  12. if (empty($files)) {
  13. return []; // Handle empty input
  14. }
  16. $dependencies = [];
  17. $fileMap = [];
  19. // Build a map of files to their content and dependency information.
  20. foreach ($files as $filePath) {
  21. if (!file_exists($filePath)) {
  22. error_log("File not found: " . $filePath); // Log missing file
  23. continue; // Skip to the next file
  24. }
  26. $fileContent = file_get_contents($filePath);
  27. $fileMap[$filePath] = [
  28. 'content' => $fileContent,
  29. 'dependencies' => [],
  30. ];
  32. // Extract dependencies from the file content. This example assumes a simple "requires:" format.
  33. preg_match_all('/requires:\s*([\w\s,]+)/', $fileContent, $matches);
  35. if (!empty($matches[1])) {
  36. $dependencies[$filePath] = explode(',', trim(str_replace(' ', '', $matches[1][0]))); // Split dependencies by comma
  37. }
  38. }
  40. // Resolve dependencies recursively.
  41. foreach ($fileMap as $filePath => $fileInfo) {
  42. foreach ($fileInfo['dependencies'] as $dependencyPath) {
  43. if (isset($fileMap[$dependencyPath])) {
  44. // Dependency exists, add it to the current file's dependencies
  45. $fileInfo['dependencies'][] = $dependencyPath;
  46. } else {
  47. // Dependency doesn't exist, log an error.
  48. error_log("Dependency not found: " . $dependencyPath . " for file: " . $filePath);
  49. }
  50. }
  51. }
  53. return $dependencies;
  54. }
  57. //Example usage (can be removed for production)
  58. /*
  59. $files = [
  60. 'file1.txt',
  61. 'file2.txt',
  62. 'file3.txt'
  63. ];
  66. //Create dummy files for testing
  67. file_put_contents('file1.txt', 'This is file 1. requires: file2, file3');
  68. file_put_contents('file2.txt', 'This is file 2. requires: file3');
  69. file_put_contents('file3.txt', 'This is file 3.');
  73. $resolvedDependencies = resolveDependencies($files);
  75. print_r($resolvedDependencies);
  77. //Clean up dummy files
  78. unlink('file1.txt');
  79. unlink('file2.txt');
  80. unlink('file3.txt');
  81. */
  82. ?>

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