1 <?php
2 /**
3 * Smarty Internal Plugin Compile For
4 *
5 * Compiles the {for} {forelse} {/for} tags
6 *
7 * @package Smarty
8 * @subpackage Compiler
9 * @author Uwe Tews
10 */
11 /**
12 * Smarty Internal Plugin Compile For Class
13 */
14 class Smarty_Internal_Compile_For extends Smarty_Internal_CompileBase {
15 /**
16 * Compiles code for the {for} tag
17 *
18 * Smarty 3 does implement two different sytaxes:
19 *
20 * - {for $var in $array}
21 * For looping over arrays or iterators
22 *
23 * - {for $x=0; $x<$y; $x++}
24 * For general loops
25 *
26 * The parser is gereration different sets of attribute by which this compiler can
27 * determin which syntax is used.
28 *
29 * @param array $args array with attributes from parser
30 * @param object $compiler compiler object
31 * @return string compiled code
32 */
33 public function compile($args, $compiler)
34 {
35 $this->compiler = $compiler;
36 // {for $x=0; $x<$y; $x++} syntax
37 if (isset($args['ifexp'])) {
38 $this->required_attributes = array('ifexp', 'start', 'loop', 'varloop');
39 } else {
40 $this->required_attributes = array('start', 'to');
41 $this->optional_attributes = array('step', 'max');
42 }
43 // check and get attributes
44 $_attr = $this->_get_attributes($args);
46 $this->_open_tag('for', array('for', $this->compiler->nocache));
47 // maybe nocache because of nocache variables
48 $this->compiler->nocache = $this->compiler->nocache | $this->compiler->tag_nocache;
50 $output = "<?php ";
51 if (isset($_attr['ifexp'])) {
52 foreach ($_attr['start'] as $_statement) {
53 $output .= " \$_smarty_tpl->tpl_vars[$_statement[var]] = new Smarty_Variable;";
54 $output .= " \$_smarty_tpl->tpl_vars[$_statement[var]]->value = $_statement[value];\n";
55 }
56 $output .= " if ($_attr[ifexp]){ for (\$_foo=true;$_attr[ifexp]; \$_smarty_tpl->tpl_vars[$_attr[varloop]]->value$_attr[loop]){\n";
57 } else {
58 $_statement = $_attr['start'];
59 $output .= "\$_smarty_tpl->tpl_vars[$_statement[var]] = new Smarty_Variable;";
60 if (isset($_attr['step'])) {
61 $output .= "\$_smarty_tpl->tpl_vars[$_statement[var]]->step = $_attr[step];";
62 } else {
63 $output .= "\$_smarty_tpl->tpl_vars[$_statement[var]]->step = ($_attr[to] - ($_statement[value]) < 0) ? -1 : 1;";
64 }
65 if (isset($_attr['max'])) {
66 $output .= "\$_smarty_tpl->tpl_vars[$_statement[var]]->total = (int)min(ceil((\$_smarty_tpl->tpl_vars[$_statement[var]]->step > 0 ? $_attr[to]+1 - $_statement[value] : $_statement[value]-($_attr[to])+1)/abs(\$_smarty_tpl->tpl_vars[$_statement[var]]->step)),$_attr[max]);\n";
67 } else {
68 $output .= "\$_smarty_tpl->tpl_vars[$_statement[var]]->total = (int)ceil((\$_smarty_tpl->tpl_vars[$_statement[var]]->step > 0 ? $_attr[to]+1 - $_statement[value] : $_statement[value]-($_attr[to])+1)/abs(\$_smarty_tpl->tpl_vars[$_statement[var]]->step));\n";
69 }
70 $output .= "if (\$_smarty_tpl->tpl_vars[$_statement[var]]->total > 0){\n";
71 $output .= "for (\$_smarty_tpl->tpl_vars[$_statement[var]]->value = $_statement[value], \$_smarty_tpl->tpl_vars[$_statement[var]]->iteration = 1;\$_smarty_tpl->tpl_vars[$_statement[var]]->iteration <= \$_smarty_tpl->tpl_vars[$_statement[var]]->total;\$_smarty_tpl->tpl_vars[$_statement[var]]->value += \$_smarty_tpl->tpl_vars[$_statement[var]]->step, \$_smarty_tpl->tpl_vars[$_statement[var]]->iteration++){\n";
72 $output .= "\$_smarty_tpl->tpl_vars[$_statement[var]]->first = \$_smarty_tpl->tpl_vars[$_statement[var]]->iteration == 1;";
73 $output .= "\$_smarty_tpl->tpl_vars[$_statement[var]]->last = \$_smarty_tpl->tpl_vars[$_statement[var]]->iteration == \$_smarty_tpl->tpl_vars[$_statement[var]]->total;";
74 }
75 $output .= "?>";
76 // return compiled code
77 return $output;
78 }
79 }
81 /**
82 * Smarty Internal Plugin Compile Forelse Class
83 */
84 class Smarty_Internal_Compile_Forelse extends Smarty_Internal_CompileBase {
85 /**
86 * Compiles code for the {forelse} tag
87 *
88 * @param array $args array with attributes from parser
89 * @param object $compiler compiler object
90 * @return string compiled code
91 */
92 public function compile($args, $compiler)
93 {
94 $this->compiler = $compiler;
95 // check and get attributes
96 $_attr = $this->_get_attributes($args);
98 list($_open_tag, $nocache) = $this->_close_tag(array('for'));
99 $this->_open_tag('forelse', array('forelse', $nocache));
100 return "<?php }} else { ?>";
101 }
102 }
104 /**
105 * Smarty Internal Plugin Compile Forclose Class
106 */
107 class Smarty_Internal_Compile_Forclose extends Smarty_Internal_CompileBase {
108 /**
109 * Compiles code for the {/for} tag
110 *
111 * @param array $args array with attributes from parser
112 * @param object $compiler compiler object
113 * @return string compiled code
114 */
115 public function compile($args, $compiler)
116 {
117 $this->compiler = $compiler;
118 // check and get attributes
119 $_attr = $this->_get_attributes($args);
120 // must endblock be nocache?
121 if ($this->compiler->nocache) {
122 $this->compiler->tag_nocache = true;
123 }
125 list($_open_tag, $this->compiler->nocache) = $this->_close_tag(array('for', 'forelse'));
126 if ($_open_tag == 'forelse')
127 return "<?php } ?>";
128 else
129 return "<?php }} ?>";
130 }
131 }
133 ?>