<?php

/**

 * Smarty Internal Plugin Compile For

 * Compiles the {for} {forelse} {/for} tags

 *

 * @package    Smarty

 * @subpackage Compiler

 * @author     Uwe Tews

 */

/**

 * Smarty Internal Plugin Compile For Class

 *

 * @package    Smarty

 * @subpackage Compiler

 */

class Smarty_Internal_Compile_For extends Smarty_Internal_CompileBase {

    /**

     * Compiles code for the {for} tag

     * Smarty 3 does implement two different syntax's:

     * - {for $var in $array}

     * For looping over arrays or iterators

     * - {for $x=0; $x<$y; $x++}

     * For general loops

     * The parser is generating different sets of attribute by which this compiler can

     * determine which syntax is used.

     *

     * @param  array $args array with attributes from parser

     * @param  object $compiler compiler object

     * @param  array $parameter array with compilation parameter

     *

     * @return string compiled code

     */

    public function compile($args, $compiler, $parameter) {

        if ($parameter == 0) {

            $this->required_attributes = array('start', 'to');

            $this->optional_attributes = array('max', 'step');

        } else {

            $this->required_attributes = array('start', 'ifexp', 'var', 'step');

            $this->optional_attributes = array();

        }

        // check and get attributes

        $_attr = $this->getAttributes($compiler, $args);

        $output = "<?php ";

        if ($parameter == 1) {

            foreach ($_attr['start'] as $_statement) {

                if (is_array($_statement['var'])) {

                    $var = $_statement['var']['var'];

                    $index = $_statement['var']['smarty_internal_index'];

                } else {

                    $var = $_statement['var'];

                    $index = '';

                }

                $output .= " \$_smarty_tpl->tpl_vars[$var] = new Smarty_Variable;";

                $output .= " \$_smarty_tpl->tpl_vars[$var]->value{$index} = $_statement[value];\n";

            }

            if (is_array($_attr['var'])) {

                $var = $_attr['var']['var'];

                $index = $_attr['var']['smarty_internal_index'];

            } else {

                $var = $_attr['var'];

                $index = '';

            }

            $output .= "  if ($_attr[ifexp]) { for (\$_foo=true;$_attr[ifexp]; \$_smarty_tpl->tpl_vars[$var]->value{$index}$_attr[step]) {\n";

        } else {

            $_statement = $_attr['start'];

            if (is_array($_statement['var'])) {

                $var = $_statement['var']['var'];

                $index = $_statement['var']['smarty_internal_index'];

            } else {

                $var = $_statement['var'];

                $index = '';

            }

            $output .= "\$_smarty_tpl->tpl_vars[$var] = new Smarty_Variable;";

            if (isset($_attr['step'])) {

                $output .= "\$_smarty_tpl->tpl_vars[$var]->step = $_attr[step];";

            } else {

                $output .= "\$_smarty_tpl->tpl_vars[$var]->step = 1;";

            }

            if (isset($_attr['max'])) {

                $output .= "\$_smarty_tpl->tpl_vars[$var]->total = (int) min(ceil((\$_smarty_tpl->tpl_vars[$var]->step > 0 ? $_attr[to]+1 - ($_statement[value]) : $_statement[value]-($_attr[to])+1)/abs(\$_smarty_tpl->tpl_vars[$var]->step)),$_attr[max]);\n";

            } else {

                $output .= "\$_smarty_tpl->tpl_vars[$var]->total = (int) ceil((\$_smarty_tpl->tpl_vars[$var]->step > 0 ? $_attr[to]+1 - ($_statement[value]) : $_statement[value]-($_attr[to])+1)/abs(\$_smarty_tpl->tpl_vars[$var]->step));\n";

            }

            $output .= "if (\$_smarty_tpl->tpl_vars[$var]->total > 0) {\n";

            $output .= "for (\$_smarty_tpl->tpl_vars[$var]->value{$index} = $_statement[value], \$_smarty_tpl->tpl_vars[$var]->iteration = 1;\$_smarty_tpl->tpl_vars[$var]->iteration <= \$_smarty_tpl->tpl_vars[$var]->total;\$_smarty_tpl->tpl_vars[$var]->value{$index} += \$_smarty_tpl->tpl_vars[$var]->step, \$_smarty_tpl->tpl_vars[$var]->iteration++) {\n";

            $output .= "\$_smarty_tpl->tpl_vars[$var]->first = \$_smarty_tpl->tpl_vars[$var]->iteration == 1;";

            $output .= "\$_smarty_tpl->tpl_vars[$var]->last = \$_smarty_tpl->tpl_vars[$var]->iteration == \$_smarty_tpl->tpl_vars[$var]->total;";

        }

        $output .= "?>";

        $this->openTag($compiler, 'for', array('for', $compiler->nocache));

        // maybe nocache because of nocache variables

        $compiler->nocache = $compiler->nocache | $compiler->tag_nocache;

        // return compiled code

        return $output;

    }

}

/**

 * Smarty Internal Plugin Compile Forelse Class

 *

 * @package    Smarty

 * @subpackage Compiler

 */

class Smarty_Internal_Compile_Forelse extends Smarty_Internal_CompileBase {

    /**

     * Compiles code for the {forelse} tag

     *

     * @param  array $args array with attributes from parser

     * @param  object $compiler compiler object

     * @param  array $parameter array with compilation parameter

     *

     * @return string compiled code

     */

    public function compile($args, $compiler, $parameter) {

        // check and get attributes

        $_attr = $this->getAttributes($compiler, $args);

        list($openTag, $nocache) = $this->closeTag($compiler, array('for'));

        $this->openTag($compiler, 'forelse', array('forelse', $nocache));

        return "<?php }} else { ?>";

    }

}

/**

 * Smarty Internal Plugin Compile Forclose Class

 *

 * @package    Smarty

 * @subpackage Compiler

 */

class Smarty_Internal_Compile_Forclose extends Smarty_Internal_CompileBase {

    /**

     * Compiles code for the {/for} tag

     *

     * @param  array $args array with attributes from parser

     * @param  object $compiler compiler object

     * @param  array $parameter array with compilation parameter

     *

     * @return string compiled code

     */

    public function compile($args, $compiler, $parameter) {

        // check and get attributes

        $_attr = $this->getAttributes($compiler, $args);

        // must endblock be nocache?

        if ($compiler->nocache) {

            $compiler->tag_nocache = true;

        }

        list($openTag, $compiler->nocache) = $this->closeTag($compiler, array('for', 'forelse'));

        if ($openTag == 'forelse') {

            return "<?php }  ?>";

        } else {

            return "<?php }} ?>";

        }

    }

}