PARSEPAGE.php in Bibliography Module 7

File

modules/bibtexParse/PARSEPAGE.php

<?php

/**
 * PARSEPAGE: BibTeX PAGES import class.
 *
 * Released through http://bibliophile.sourceforge.net under the GPL licence.
 * Do whatever you like with this -- some credit to the author(s) would be appreciated.
 *
 * A collection of PHP classes to manipulate bibtex files.
 *
 * If you make improvements, please consider contacting the administrators at bibliophile.sourceforge.net
 * so that your improvements can be added to the release package.
 *
 * Mark Grimshaw 2005
 * http://bibliophile.sourceforge.net
 *
 * Create page arrays from bibtex input. The 'pages' field can be:
 *  - "77--99"
 *  - "3 - 5"
 *  - "ix -- 101"
 *  - "73+"
 *  - 73, 89,103"
 *
 * Currently, PARSEPAGE will take 1/, 2/ and 3/ above as page_start and page_end
 * and, in the other cases, will accept.
 */
class PARSEPAGE {

  /**
   * The first valid number it finds from the left as page_start setting page_end to NULL.
   */
  public function init($item) {
    $item = trim($item);
    if ($this
      ->type1($item)) {
      return $this->return;
    }

    // else, return first number we can find.
    if (preg_match("/(\\d+|[ivx]+)/i", $item, $array)) {
      return array(
        $array[1],
        FALSE,
      );
    }

    // No valid page numbers found.
    return array(
      FALSE,
      FALSE,
    );
  }

  /**
   * "77--99" or '-'type?
   */
  public function type1($item) {
    $start = $end = FALSE;
    $array = preg_split("/--|-/", $item);
    if (count($array) > 1) {
      if (is_numeric(trim($array[0]))) {
        $start = trim($array[0]);
      }
      else {
        $start = strtolower(trim($array[0]));
      }
      if (is_numeric(trim($array[1]))) {
        $end = trim($array[1]);
      }
      else {
        $end = strtolower(trim($array[1]));
      }
      if ($end && !$start) {
        $this->return = array(
          $end,
          $start,
        );
      }
      else {
        $this->return = array(
          $start,
          $end,
        );
      }
      return TRUE;
    }
    return FALSE;
  }

}

Classes

Name	Description
PARSEPAGE	PARSEPAGE: BibTeX PAGES import class.