<?php
/**
* gTemplate Internal Function
* Compiles the 'if' function
*
* @package gTemplate
* @subpackage internalFunctions
*/
function compile_compile_if($arguments, $elseif, $while, &$gTpl) {
$_result = "";
$_match = array();
$_args = array();
$_is_arg_stack = array();
// extract arguments from the equation
preg_match_all('/(?>('.$gTpl->_obj_call_regexp.'|' . $gTpl->_var_regexp . '|\/?' . $gTpl->_svar_regexp . '|\/?' . $gTpl->_fvar_regexp . '|\/?' . $gTpl->_func_regexp . ')(?:' . $gTpl->_mod_regexp . '*)?|\-?0[xX][0-9a-fA-F]+|\-?\d+(?:\.\d+)?|\.\d+|!==|===|==|!=|<>|<<|>>|<=|>=|\&\&|\|\||\(|\)|,|\!|\^|=|\&|\~|<|>|\%|\+|\-|\/|\*|\@|\b\w+\b|\S+)/x', $arguments, $_match);
$_args = $_match[0];
// make sure we have balanced parenthesis
$_args_count = array_count_values($_args);
if (isset($_args_count['(']) && $_args_count['('] != $_args_count[')']) {
$gTpl->trigger_error("[SYNTAX] unbalanced parenthesis in if statement", E_USER_ERROR, $gTpl->_file, $gTpl->_linenum);
}
$count_args = count($_args);
for ($i = 0, $for_max = $count_args; $i < $for_max; $i++) {
$_arg = &$_args[$i];
switch (strtolower($_arg)) {
case '!':
case '%':
case '!==':
case '==':
case '===':
case '>':
case '<':
case '!=':
case '<>':
case '<<':
case '>>':
case '<=':
case '>=':
case '&&':
case '||':
case '^':
case '&':
case '~':
case ')':
case ',':
case '+':
case '-':
case '*':
case '/':
case '@':
break;
case 'eq':
$_arg = '==';
break;
case 'ne':
case 'neq':
$_arg = '!=';
break;
case 'lt':
$_arg = '<';
break;
case 'le':
case 'lte':
$_arg = '<=';
break;
case 'gt':
$_arg = '>';
break;
case 'ge':
case 'gte':
$_arg = '>=';
break;
case 'and':
$_arg = '&&';
break;
case 'or':
$_arg = '||';
break;
case 'not':
$_arg = '!';
break;
case 'mod':
$_arg = '%';
break;
case '(':
array_push($_is_arg_stack, $i);
break;
case 'is':
if ($_args[$i - 1] == ')') {
$is_arg_start = array_pop($is_arg_stack);
} else {
$_is_arg_count = count($_args);
$is_arg = implode(' ', array_slice($_args, $is_arg_start, $i - $is_arg_start));
$_arg_tokens = $gTpl->_parse_is_expr($is_arg, array_slice($_args, $i + 1));
array_splice($_args, $is_arg_start, count($_args), $_arg_tokens);
$i = $_is_arg_count - count($_args);
}
break;
default:
preg_match('/(?:('.$gTpl->_obj_call_regexp.'|' . $gTpl->_var_regexp . '|' . $gTpl->_svar_regexp . '|' . $gTpl->_func_regexp . ')(' . $gTpl->_mod_regexp . '*)(?:\s*[,\.]\s*)?)(?:\s+(.*))?/xs', $_arg, $_match);
if (isset($_match[0]{0}) && ($_match[0]{0} == '$' || ($_match[0]{0} == '#' && $_match[0]{strlen($_match[0]) - 1} == '#') || $_match[0]{0} == "'" || $_match[0]{0} == '"' || $_match[0]{0} == '%')) {
// process a variable
$_arg = $gTpl->_parse_variables(array($_match[1]), array($_match[2]));
} elseif (is_numeric($_arg)) {
// pass the number through
} elseif (function_exists($_match[0]) || $_match[0] == "empty" || $_match[0] == "isset" || $_match[0] == "unset" || strtolower($_match[0]) == "true" || strtolower($_match[0]) == "false" || strtolower($_match[0]) == "null") {
// pass the function through
} elseif (empty($_arg)) {
// pass the empty argument through
} else {
$gTpl->trigger_error("[SYNTAX] unidentified token '$_arg'", E_USER_ERROR, $gTpl->_file, $gTpl->_linenum);
}
break;
}
}
if ($while) {
return implode(' ', $_args);
} else {
if ($elseif) {
return '<?php elseif (' . implode(' ', $_args) . '): ?>';
} else {
return '<?php if (' . implode(' ', $_args) . '): ?>';
}
}
return $_result;
}
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