vcs.fsf.org Git - civicrm-core.git/blob

   1 <?php
   2
   3 define(CCRM_EXTENSIONVALIDATION_PAD, 7);
   4
   5 /**
   6  * Determine if a version is valid
   7  *
   8  * @return bool
   9  */
  10 function ccrm_extensionvalidation_version_isValid($ver) {
  11   $parts = ccrm_extensionvalidation_version_split($ver);
  12   foreach ($parts as $part) {
  13     if (!preg_match('/^(z[0-9]+|pre[0-9]+)$/', $part)) {
  14       return FALSE;
  15     }
  16   }
  17   return TRUE;
  18 }
  19
  20 /**
  21  * Normalize version, producing a code that can be correclty
  22  * sorted in SQL.
  23  *
  24  * @return string
  25  */
  26 function ccrm_extensionvalidation_version_normalize($ver) {
  27   return implode('-', ccrm_extensionvalidation_version_split($ver));
  28 }
  29
  30
  31 /**
  32  * Clean version number:
  33  *  - Use consistent delimiter
  34  *  - Change revision #s (r456) to straight numbers (456)
  35  *  - Explode into numeric and alphabetic parts
  36  *  - Make numerals higher than alphas (1.2.0 > 1.2.alpha)
  37  *
  38  * @return array of version parts
  39  */
  40 function ccrm_extensionvalidation_version_split($ver, $pad = CCRM_EXTENSIONVALIDATION_PAD) {
  41   $ver = strtolower($ver);
  42   $ver = preg_replace('/-/', '.', $ver);
  43   $ver = preg_replace('/^r/', '', $ver);
  44   $ver .= '.';
  45
  46   $parts = array();
  47   $len = strlen($ver);
  48   $buf = '';
  49   $state = 'NEW';
  50   for ($i = 0; $i < $len; $i++) {
  51     if ($ver{$i} == '.') {
  52       $newCharType = 'SEP';
  53     } elseif (is_numeric($ver{$i})) {
  54       $newCharType = 'NUM';
  55     } else {
  56       $newCharType = 'ALPHA';
  57     }
  58
  59     // printf("ver=[%s] state=%-5s newCharType=%-5s char=[%s] parts=[%-12s] buf=[%s]\n", $ver, $state, $newCharType, $ver{$i}, implode('/', $parts), $buf);
  60     switch ($state) {
  61       case 'NEW':
  62         $buf .= $ver{$i};
  63         $state = $newCharType;
  64         break;
  65       case 'NUM':
  66       case 'ALPHA':
  67       default:
  68         if ($state == $newCharType) {
  69           $buf .= $ver{$i};
  70         } elseif ($newCharType == 'SEP') {
  71           $parts[] = $buf;
  72           $buf = '';
  73           $state = 'NEW';
  74         } elseif ($newCharType == 'NUM') {
  75           $parts[] = $buf;
  76           $buf = $ver{$i};
  77           $state = $newCharType;
  78         } elseif ($newCharType == 'ALPHA') {
  79           $parts[] = $buf;
  80           $buf = $ver{$i};
  81           $state = $newCharType;
  82         }
  83         break;
  84     }
  85   }
  86
  87   $codes = array(
  88     'alpha' => 'pre010',
  89     'beta' => 'pre020',
  90     'rc' => 'pre030',
  91   );
  92   foreach ($parts as $i => &$part) {
  93     if (is_numeric($part)) {
  94       if (strlen($part) > $pad) {
  95         $part = 'invalid';
  96       } else {
  97         $part = sprintf("z%0${pad}s", $part);
  98       }
  99     } else {
 100       if (isset($codes[$part])) {
 101         $part = $codes[$part];
 102       }
 103     }
 104   }
 105
 106   return $parts;
 107 }