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<?php/**
 * gTemplate Internal Function
 * Compiles the 'section' tag
 *
 * @package    gTemplate
 * @subpackage internalFunctions
 */
 
 
 function compile_section_start($attrs, &$gTpl) {
 $arg_list = array();
 
 $output =   "<?php \n/* START of Section */\n";
 
 $section_name = $attrs['name'];
 /* Required attr: name */
 if (empty($section_name)) {
 $gTpl->trigger_error("[SYNTAX] missing 'name' attribute in 'section' tag", E_USER_ERROR, $gTpl->_file, $gTpl->_linenum);
 }
 
 /* Required attr: loop */
 if (empty($attrs['loop'])) {
 $gTpl->trigger_error("[SYNTAX] missing 'loop' attribute in 'section' tag", E_USER_ERROR, $gTpl->_file, $gTpl->_linenum);
 }
 
 $output .= "\$gTpl->_sections['$section_name'] = array();\n";
 $section_props = "\$gTpl->_sections['$section_name']";
 
 //$output .= '/* Setting predefined attributes */'."\n";
 foreach ($attrs as $attr_name => $attr_value) {
 switch ($attr_name) {
 case 'name': break;
 
 case 'loop':
 $output .= "{$section_props}['loop'] = is_array(\$_loop=$attr_value) ? count(\$_loop) : max(0, (int)\$_loop); unset(\$_loop);\n";
 break;
 
 case 'show':
 if (is_bool($attr_value))
 $show_attr_value = $attr_value ? 'true' : 'false';
 else
 $show_attr_value = "(bool)$attr_value";
 $output .= "{$section_props}['show'] = $show_attr_value;\n";
 break;
 
 case 'max':
 case 'start':
 $output .= "{$section_props}['$attr_name'] = (int)$attr_value;\n";
 break;
 
 case 'step':
 $output .= "{$section_props}['$attr_name'] = ((int)$attr_value) == 0 ? 1 : (int)$attr_value;\n";
 break;
 
 default:
 $gTpl->trigger_error("[SYNTAX] unknown attribute '$attr_name' in 'section' tag", E_USER_ERROR, $gTpl->_file, $gTpl->_linenum);
 break;
 }
 }
 
 //$output .= '/* END of Setting predefined attributes */'."\n";
 //$output .= "\n".'/* Setting default values for attributes */'."\n";
 
 if (!isset($attrs['show']))
 $output .= "{$section_props}['show'] = true;\n";
 
 if (!isset($attrs['loop']))
 $output .= "{$section_props}['loop'] = 1;\n";
 
 if (!isset($attrs['max']))
 $output .= "{$section_props}['max'] = {$section_props}['loop'];\n";
 else
 $output .= "if ({$section_props}['max'] < 0)\n" .
 "    {$section_props}['max'] = {$section_props}['loop'];\n";
 
 if (!isset($attrs['step']))
 $output .= "{$section_props}['step'] = 1;\n";
 
 if (!isset($attrs['start']))
 $output .= "{$section_props}['start'] = {$section_props}['step'] > 0 ? 0 : {$section_props}['loop']-1;\n";
 else {
 $output .= "if ({$section_props}['start'] < 0)\n" .
 "    {$section_props}['start'] = max({$section_props}['step'] > 0 ? 0 : -1, {$section_props}['loop'] + {$section_props}['start']);\n" .
 "else\n" .
 "    {$section_props}['start'] = min({$section_props}['start'], {$section_props}['step'] > 0 ? {$section_props}['loop'] : {$section_props}['loop']-1);\n";
 }
 
 //$output .= "/* Determine Total loops */\n"
 $output .= "if ({$section_props}['show']) {\n";
 if (!isset($attrs['start']) && !isset($attrs['step']) && !isset($attrs['max'])) {
 $output .= "    {$section_props}['total'] = {$section_props}['loop'];\n";
 } else {
 $output .= "    {$section_props}['total'] = min(ceil(({$section_props}['step'] > 0 ? {$section_props}['loop'] - {$section_props}['start'] : {$section_props}['start']+1)/abs({$section_props}['step'])), {$section_props}['max']);\n";
 }
 $output .= "    if ({$section_props}['total'] == 0)\n" .
 "        {$section_props}['show'] = false;\n" .
 "} else\n" .
 "    {$section_props}['total'] = 0;\n";
 
 //$output .= "/* END of Determine Total loops */\n";
 //$output .= '/* END of Setting default values for attributes */'."\n";
 
 $output .= "if ({$section_props}['show']):";
 
 $output .= "
 for ({$section_props}['index'] = {$section_props}['start'], {$section_props}['iteration'] = 1;
 {$section_props}['iteration'] <= {$section_props}['total'];
 {$section_props}['index'] += {$section_props}['step'], {$section_props}['iteration']++):\n";
 
 $output .= "?>";
 
 return $output;
 
 
 $output .= "
 for ({$section_props}['index'] = {$section_props}['start'], {$section_props}['iteration'] = 1;
 {$section_props}['iteration'] <= {$section_props}['total'];
 {$section_props}['index'] += {$section_props}['step'], {$section_props}['iteration']++):\n";
 $output .= "{$section_props}['rownum'] = {$section_props}['iteration'];\n";
 $output .= "{$section_props}['index_prev'] = {$section_props}['index'] - {$section_props}['step'];\n";
 $output .= "{$section_props}['index_next'] = {$section_props}['index'] + {$section_props}['step'];\n";
 $output .= "{$section_props}['first']      = ({$section_props}['iteration'] == 1);\n";
 $output .= "{$section_props}['last']       = ({$section_props}['iteration'] == {$section_props}['total']);\n";
 
 $output .= "?>";
 
 return $output;
 
 
 }
 
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