license helper

[pharext/pharext] / src / pharext / License.php

diff --git a/src/pharext/License.php b/src/pharext/License.php
new file mode 100644 (file)
index 0000000..0f339fd
--- /dev/null
+++ b/src/pharext/License.php
@@ -0,0 +1,51 @@
+<?php
+
+namespace pharext;
+
+trait License
+{
+       function findLicense($dir, $file = null) {
+               if (isset($file)) {
+                       return realpath("$dir/$file");
+               }
+
+               $names = [];
+               foreach (["{,UN}LICEN{S,C}{E,ING}", "COPY{,ING,RIGHT}"] as $name) {
+                       $names[] = $this->mergeLicensePattern($name, strtolower($name));
+               }
+               $exts = [];
+               foreach (["t{,e}xt", "rst", "asc{,i,ii}", "m{,ark}d{,own}", "htm{,l}"] as $ext) {
+                       $exts[] = $this->mergeLicensePattern(strtoupper($ext), $ext);
+               }
+               
+               $pattern = "{". implode(",", $names) ."}{,.{". implode(",", $exts) ."}}";
+
+               if (($glob = glob("$dir/$pattern", GLOB_BRACE))) {
+                       return current($glob);
+               }
+       }
+
+       private function mergeLicensePattern($upper, $lower) {
+               $pattern = "";
+               $length = strlen($upper);
+               for ($i = 0; $i < $length; ++$i) {
+                       if ($lower{$i} === $upper{$i}) {
+                               $pattern .= $upper{$i};
+                       } else {
+                               $pattern .= "[" . $upper{$i} . $lower{$i} . "]";
+                       }
+               }
+               return $pattern;
+       }
+
+       public function readLicense($file) {
+               $text = file_get_contents($file);
+               switch (strtolower(pathinfo($file, PATHINFO_EXTENSION))) {
+                       case "htm":
+                       case "html":
+                               $text = strip_tags($text);
+                               break;
+               }
+               return $text;
+       }
+}