/
class.compiler.php
1098 lines (1024 loc) · 35.1 KB
/
class.compiler.php
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<?php
/*
* Project: template_lite, a smarter template engine
* File: class.compiler.php
* Author: Paul Lockaby <paul@paullockaby.com>, Mark Dickenson <akapanamajack@sourceforge.net>
* Copyright: 2003,2004,2005 by Paul Lockaby, 2005,2006 Mark Dickenson
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* The latest version of template_lite can be obtained from:
* http://templatelite.sourceforge.net
*
*/
class Template_Lite_Compiler extends Template_Lite {
// public configuration variables
var $left_delimiter = "";
var $right_delimiter = "";
var $plugin_prefix = array();
var $plugins_dir = array();
var $compile_dir = "";
var $template_dir = "";
var $reserved_template_varname = "";
var $default_modifiers = array();
var $php_extract_vars = true; // Set this to false if you do not want the $this->_tpl variables to be extracted for use by PHP code inside the template.
// private internal variables
var $_vars = array(); // stores all internal assigned variables
var $_confs = array(); // stores all internal config variables
var $_plugins = array(); // stores all internal plugins
var $_linenum = 0; // the current line number in the file we are processing
var $_file = ""; // the current file we are processing
var $_literal = array(); // stores all literal blocks
var $_foreachelse_stack = array();
var $_for_stack = 0;
var $_sectionelse_stack = array(); // keeps track of whether section had 'else' part
var $_switch_stack = array();
var $_tag_stack = array();
var $_require_stack = array(); // stores all files that are "required" inside of the template
var $_php_blocks = array(); // stores all of the php blocks
var $_error_level = null;
var $_sl_md5 = '39fc70570b8b60cbc1b85839bf242aff';
var $_db_qstr_regexp = null; // regexps are setup in the constructor
var $_si_qstr_regexp = null;
var $_qstr_regexp = null;
var $_func_regexp = null;
var $_reg_obj_regexp = null;
var $_var_bracket_regexp = null;
var $_num_const_regexp = null;
var $_dvar_guts_regexp = null;
var $_dvar_regexp = null;
var $_cvar_regexp = null;
var $_svar_regexp = null;
var $_avar_regexp = null;
var $_mod_regexp = null;
var $_var_regexp = null;
var $_parenth_param_regexp = null;
var $_func_call_regexp = null;
var $_obj_ext_regexp = null;
var $_obj_start_regexp = null;
var $_obj_params_regexp = null;
var $_obj_call_regexp = null;
var $_templatelite_vars = array();
function Template_Lite_compiler()
{
// matches double quoted strings:
// "foobar"
// "foo\"bar"
$this->_db_qstr_regexp = '"[^"\\\\]*(?:\\\\.[^"\\\\]*)*"';
// matches single quoted strings:
// 'foobar'
// 'foo\'bar'
$this->_si_qstr_regexp = '\'[^\'\\\\]*(?:\\\\.[^\'\\\\]*)*\'';
// matches single or double quoted strings
$this->_qstr_regexp = '(?:' . $this->_db_qstr_regexp . '|' . $this->_si_qstr_regexp . ')';
// matches bracket portion of vars
// [0]
// [foo]
// [$bar]
$this->_var_bracket_regexp = '\[\$?[\w\.]+\]';
// matches numerical constants
// 30
// -12
// 13.22
$this->_num_const_regexp = '(?:\-?\d+(?:\.\d+)?)';
// matches $ vars (not objects):
// $foo
// $foo.bar
// $foo.bar.foobar
// $foo[0]
// $foo[$bar]
// $foo[5][blah]
// $foo[5].bar[$foobar][4]
$this->_dvar_math_regexp = '(?:[\+\*\/\%]|(?:-(?!>)))';
$this->_dvar_math_var_regexp = '[\$\w\.\+\-\*\/\%\d\>\[\]]';
$this->_dvar_guts_regexp = '\w+(?:' . $this->_var_bracket_regexp
. ')*(?:\.\$?\w+(?:' . $this->_var_bracket_regexp . ')*)*(?:' . $this->_dvar_math_regexp . '(?:' . $this->_num_const_regexp . '|' . $this->_dvar_math_var_regexp . ')*)?';
$this->_dvar_regexp = '\$' . $this->_dvar_guts_regexp;
// matches config vars:
// #foo#
// #foobar123_foo#
$this->_cvar_regexp = '\#\w+\#';
// matches section vars:
// %foo.bar%
$this->_svar_regexp = '\%\w+\.\w+\%';
// matches all valid variables (no quotes, no modifiers)
$this->_avar_regexp = '(?:' . $this->_dvar_regexp . '|'
. $this->_cvar_regexp . '|' . $this->_svar_regexp . ')';
// matches valid variable syntax:
// $foo
// $foo
// #foo#
// #foo#
// "text"
// "text"
$this->_var_regexp = '(?:' . $this->_avar_regexp . '|' . $this->_qstr_regexp . ')';
// matches valid object call (one level of object nesting allowed in parameters):
// $foo->bar
// $foo->bar()
// $foo->bar("text")
// $foo->bar($foo, $bar, "text")
// $foo->bar($foo, "foo")
// $foo->bar->foo()
// $foo->bar->foo->bar()
// $foo->bar($foo->bar)
// $foo->bar($foo->bar())
// $foo->bar($foo->bar($blah,$foo,44,"foo",$foo[0].bar))
$this->_obj_ext_regexp = '\->(?:\$?' . $this->_dvar_guts_regexp . ')';
$this->_obj_restricted_param_regexp = '(?:'
. '(?:' . $this->_var_regexp . '|' . $this->_num_const_regexp . ')(?:' . $this->_obj_ext_regexp . '(?:\((?:(?:' . $this->_var_regexp . '|' . $this->_num_const_regexp . ')'
. '(?:\s*,\s*(?:' . $this->_var_regexp . '|' . $this->_num_const_regexp . '))*)?\))?)*)';
$this->_obj_single_param_regexp = '(?:\w+|' . $this->_obj_restricted_param_regexp . '(?:\s*,\s*(?:(?:\w+|'
. $this->_var_regexp . $this->_obj_restricted_param_regexp . ')))*)';
$this->_obj_params_regexp = '\((?:' . $this->_obj_single_param_regexp
. '(?:\s*,\s*' . $this->_obj_single_param_regexp . ')*)?\)';
$this->_obj_start_regexp = '(?:' . $this->_dvar_regexp . '(?:' . $this->_obj_ext_regexp . ')+)';
$this->_obj_call_regexp = '(?:' . $this->_obj_start_regexp . '(?:' . $this->_obj_params_regexp . ')?(?:' . $this->_dvar_math_regexp . '(?:' . $this->_num_const_regexp . '|' . $this->_dvar_math_var_regexp . ')*)?)';
// matches valid modifier syntax:
// |foo
// |@foo
// |foo:"bar"
// |foo:$bar
// |foo:"bar":$foobar
// |foo|bar
// |foo:$foo->bar
$this->_mod_regexp = '(?:\|@?\w+(?::(?:\w+|' . $this->_num_const_regexp . '|'
. $this->_obj_call_regexp . '|' . $this->_avar_regexp . '|' . $this->_qstr_regexp .'))*)';
// matches valid function name:
// foo123
// _foo_bar
$this->_func_regexp = '[a-zA-Z_]\w*';
// matches valid registered object:
// foo->bar
$this->_reg_obj_regexp = '[a-zA-Z_]\w*->[a-zA-Z_]\w*';
// matches valid parameter values:
// true
// $foo
// $foo|bar
// #foo#
// #foo#|bar
// "text"
// "text"|bar
// $foo->bar
$this->_param_regexp = '(?:\s*(?:' . $this->_obj_call_regexp . '|'
. $this->_var_regexp . '|' . $this->_num_const_regexp . '|\w+)(?>' . $this->_mod_regexp . '*)\s*)';
// matches valid parenthesised function parameters:
//
// "text"
// $foo, $bar, "text"
// $foo|bar, "foo"|bar, $foo->bar($foo)|bar
$this->_parenth_param_regexp = '(?:\((?:\w+|'
. $this->_param_regexp . '(?:\s*,\s*(?:(?:\w+|'
. $this->_param_regexp . ')))*)?\))';
// matches valid function call:
// foo()
// foo_bar($foo)
// _foo_bar($foo,"bar")
// foo123($foo,$foo->bar(),"foo")
$this->_func_call_regexp = '(?:' . $this->_func_regexp . '\s*(?:'
. $this->_parenth_param_regexp . '))';
}
function _compile_file($file_contents)
{
$ldq = preg_quote($this->left_delimiter);
$rdq = preg_quote($this->right_delimiter);
$_match = array(); // a temp variable for the current regex match
$tags = array(); // all original tags
$text = array(); // all original text
$compiled_text = '<?php /* '.$this->_version.' '.strftime("%Y-%m-%d %H:%M:%S %Z").' */ ?>'."\n\n"; // stores the compiled result
$compiled_tags = array(); // all tags and stuff
$this->_require_stack = array();
$this->_load_filters();
if (count($this->_plugins['prefilter']) > 0)
{
foreach ($this->_plugins['prefilter'] as $function)
{
if ($function === false)
{
continue;
}
if(is_array($function)) {
$file_contents = $function[0]->$function[1]($file_contents, $this);
}else{
$file_contents = $function($file_contents, $this);
}
}
}
// remove all comments
$file_contents = preg_replace("!{$ldq}\*.*?\*{$rdq}!se","",$file_contents);
// replace all php start and end tags
$file_contents = preg_replace('%(<\?(?!php|=|$))%i', '<?php echo \'\\1\'?>'."\n", $file_contents);
// remove literal blocks
preg_match_all("!{$ldq}\s*literal\s*{$rdq}(.*?){$ldq}\s*/literal\s*{$rdq}!s", $file_contents, $_match);
$this->_literal = $_match[1];
$file_contents = preg_replace("!{$ldq}\s*literal\s*{$rdq}(.*?){$ldq}\s*/literal\s*{$rdq}!s", stripslashes($ldq . "literal" . $rdq), $file_contents);
// remove php blocks
preg_match_all("!{$ldq}\s*php\s*{$rdq}(.*?){$ldq}\s*/php\s*{$rdq}!s", $file_contents, $_match);
$this->_php_blocks = $_match[1];
$file_contents = preg_replace("!{$ldq}\s*php\s*{$rdq}(.*?){$ldq}\s*/php\s*{$rdq}!s", stripslashes($ldq . "php" . $rdq), $file_contents);
// gather all template tags
preg_match_all("!{$ldq}\s*(.*?)\s*{$rdq}!s", $file_contents, $_match);
$tags = $_match[1];
// put all of the non-template tag text blocks into an array, using the template tags as delimiters
$text = preg_split("!{$ldq}.*?{$rdq}!s", $file_contents);
// compile template tags
$count_tags = count($tags);
for ($i = 0, $for_max = $count_tags; $i < $for_max; $i++)
{
$this->_linenum += substr_count($text[$i], "\n");
$compiled_tags[] = $this->_compile_tag($tags[$i]);
$this->_linenum += substr_count($tags[$i], "\n");
}
// build the compiled template by replacing and interleaving text blocks and compiled tags
$count_compiled_tags = count($compiled_tags);
for ($i = 0, $for_max = $count_compiled_tags; $i < $for_max; $i++)
{
if ($compiled_tags[$i] == '') {
$text[$i+1] = preg_replace('~^(\r\n|\r|\n)~', '', $text[$i+1]);
}
$compiled_text .= $text[$i].$compiled_tags[$i];
}
$compiled_text .= $text[$i];
foreach ($this->_require_stack as $key => $value)
{
$compiled_text = '<?php require_once(\''. $this->_get_plugin_dir($key) . $key . '\'); $this->register_' . $value[0] . '("' . $value[1] . '", "' . $value[2] . '"); ?>' . $compiled_text;
}
// remove unnecessary close/open tags
$compiled_text = preg_replace('!\?>\n?<\?php!', '', $compiled_text);
if (count($this->_plugins['postfilter']) > 0)
{
foreach ($this->_plugins['postfilter'] as $function)
{
if ($function === false)
{
continue;
}
if(is_array($function)) {
$compiled_text = $function[0]->$function[1]($compiled_text, $this);
}else{
$compiled_text = $function($compiled_text, $this);
}
}
}
return $compiled_text;
}
function _compile_tag($tag)
{
$_match = array(); // stores the tags
$_result = ""; // the compiled tag
$_variable = ""; // the compiled variable
// extract the tag command, modifier and arguments
preg_match_all('/(?:(' . $this->_var_regexp . '|' . $this->_svar_regexp . '|\/?' . $this->_func_regexp . ')(' . $this->_mod_regexp . '*)(?:\s*[,\.]\s*)?)(?:\s+(.*))?/xs', $tag, $_match);
if ($_match[1][0]{0} == '$' || ($_match[1][0]{0} == '#' && $_match[1][0]{strlen($_match[1][0]) - 1} == '#') || $_match[1][0]{0} == "'" || $_match[1][0]{0} == '"' || $_match[1][0]{0} == '%')
{
$_result = $this->_parse_variables($_match[1], $_match[2]);
return "<?php echo $_result; ?>\n";
}
// process a function
$tag_command = $_match[1][0];
$tag_modifiers = !empty($_match[2][0]) ? $_match[2][0] : null;
$tag_arguments = !empty($_match[3][0]) ? $_match[3][0] : null;
$_result = $this->_parse_function($tag_command, $tag_modifiers, $tag_arguments);
return $_result;
}
function _parse_function($function, $modifiers, $arguments)
{
switch ($function) {
case 'include':
if (!function_exists('compile_include'))
{
require_once(TEMPLATE_LITE_DIR . "internal/compile.include.php");
}
return compile_include($arguments, $this);
break;
case 'insert':
$_args = $this->_parse_arguments($arguments);
if (!isset($_args['name']))
{
$this->trigger_error("missing 'name' attribute in 'insert'", E_USER_ERROR, __FILE__, __LINE__);
}
foreach ($_args as $key => $value)
{
if (is_bool($value))
{
$value = $value ? 'true' : 'false';
}
$arg_list[] = "'$key' => $value";
}
return '<?php echo $this->_run_insert(array(' . implode(', ', (array)$arg_list) . ')); ?>';
break;
case 'ldelim':
return $this->left_delimiter;
break;
case 'rdelim':
return $this->right_delimiter;
break;
case 'literal':
list (,$literal) = each($this->_literal);
$this->_linenum += substr_count($literal, "\n");
return "<?php echo '" . str_replace("'", "\'", str_replace("\\", "\\\\", $literal)) . "'; ?>\n";
break;
case 'php':
list (,$php_block) = each($this->_php_blocks);
$this->_linenum += substr_count($php_block, "\n");
$php_extract = '';
if($this->php_extract_vars)
{
if (strnatcmp(PHP_VERSION, '4.3.0') >= 0)
{
$php_extract = '<?php extract($this->_vars, EXTR_REFS); ?>' . "\n";
}
else
{
$php_extract = '<?php extract($this->_vars); ?>' . "\n";
}
}
return $php_extract . '<?php '.$php_block.' ?>';
break;
case 'foreach':
array_push($this->_foreachelse_stack, false);
$_args = $this->_parse_arguments($arguments);
if (!isset($_args['from']))
{
$this->trigger_error("missing 'from' attribute in 'foreach'", E_USER_ERROR, __FILE__, __LINE__);
}
if (!isset($_args['value']) && !isset($_args['item']))
{
$this->trigger_error("missing 'value' attribute in 'foreach'", E_USER_ERROR, __FILE__, __LINE__);
}
if (isset($_args['value']))
{
$_args['value'] = $this->_dequote($_args['value']);
}
elseif (isset($_args['item']))
{
$_args['value'] = $this->_dequote($_args['item']);
}
if (isset($_args['name']))
{
$_args['name'] = $this->_dequote($_args['name']);
}
isset($_args['key']) ? $_args['key'] = "\$this->_vars['".$this->_dequote($_args['key'])."'] => " : $_args['key'] = '';
$foreach_props = '$this->_templatelite_vars[\'foreach\'][' . $_args['name'] . ']';
$_result = '<?php if (count((array)' . $_args['from'] . ')): ?>';
if (isset($_args['name']))
{
$_result .= '<?php ' . $foreach_props . '[\'iteration\'] = 0; ?>';
}
$_result .= '<?php foreach ((array)' . $_args['from'] . ' as ' . $_args['key'] . '$this->_vars[\'' . $_args['value'] . '\']): ?>';
if (isset($_args['name']))
{
$_result .= '<?php ' . $foreach_props . '[\'iteration\']++; ?>';
}
return $_result;
break;
case 'foreachelse':
$this->_foreachelse_stack[count($this->_foreachelse_stack)-1] = true;
return "<?php endforeach; else: ?>";
break;
case '/foreach':
if (array_pop($this->_foreachelse_stack))
{
return "<?php endif; ?>";
}
else
{
return "<?php endforeach; endif; ?>";
}
break;
case 'for':
$this->_for_stack++;
$_args = $this->_parse_arguments($arguments);
if (!isset($_args['start']))
{
$this->trigger_error("missing 'start' attribute in 'for'", E_USER_ERROR, __FILE__, __LINE__);
}
if (!isset($_args['stop']))
{
$this->trigger_error("missing 'stop' attribute in 'for'", E_USER_ERROR, __FILE__, __LINE__);
}
if (!isset($_args['step']))
{
$_args['step'] = 1;
}
$_result = '<?php for($for' . $this->_for_stack . ' = ' . $_args['start'] . '; ((' . $_args['start'] . ' < ' . $_args['stop'] . ') ? ($for' . $this->_for_stack . ' < ' . $_args['stop'] . ') : ($for' . $this->_for_stack . ' > ' . $_args['stop'] . ')); $for' . $this->_for_stack . ' += ((' . $_args['start'] . ' < ' . $_args['stop'] . ') ? ' . $_args['step'] . ' : -' . $_args['step'] . ')): ?>';
if (isset($_args['value']))
{
$_result .= '<?php $this->assign(\'' . $this->_dequote($_args['value']) . '\', $for' . $this->_for_stack . '); ?>';
}
return $_result;
break;
case '/for':
$this->_for_stack--;
return "<?php endfor; ?>";
break;
case 'section':
array_push($this->_sectionelse_stack, false);
if (!function_exists('compile_section_start'))
{
require_once(TEMPLATE_LITE_DIR . "internal/compile.section_start.php");
}
return compile_section_start($arguments, $this);
break;
case 'sectionelse':
$this->_sectionelse_stack[count($this->_sectionelse_stack)-1] = true;
return "<?php endfor; else: ?>";
break;
case '/section':
if (array_pop($this->_sectionelse_stack))
{
return "<?php endif; ?>";
}
else
{
return "<?php endfor; endif; ?>";
}
break;
case 'while':
$_args = $this->_compile_if($arguments, false, true);
return '<?php while(' . $_args . '): ?>';
break;
case '/while':
return "<?php endwhile; ?>";
break;
case 'if':
return $this->_compile_if($arguments);
break;
case 'else':
return "<?php else: ?>";
break;
case 'elseif':
return $this->_compile_if($arguments, true);
break;
case '/if':
return "<?php endif; ?>";
break;
case 'assign':
$_args = $this->_parse_arguments($arguments);
if (!isset($_args['var']))
{
$this->trigger_error("missing 'var' attribute in 'assign'", E_USER_ERROR, __FILE__, __LINE__);
}
if (!isset($_args['value']))
{
$this->trigger_error("missing 'value' attribute in 'assign'", E_USER_ERROR, __FILE__, __LINE__);
}
if (is_bool($_args['value']))
$_args['value'] = $_args['value'] ? 'true' : 'false';
return '<?php $this->assign(\'' . $this->_dequote($_args['var']) . '\', ' . $_args['value'] . '); ?>';
break;
case 'switch':
$_args = $this->_parse_arguments($arguments);
if (!isset($_args['from']))
{
$this->trigger_error("missing 'from' attribute in 'switch'", E_USER_ERROR, __FILE__, __LINE__);
}
array_push($this->_switch_stack, array("matched" => false, "var" => $this->_dequote($_args['from'])));
return;
break;
case '/switch':
array_pop($this->_switch_stack);
return '<?php break; endswitch; ?>';
break;
case 'case':
if (count($this->_switch_stack) > 0)
{
$_result = "<?php ";
$_args = $this->_parse_arguments($arguments);
$_index = count($this->_switch_stack) - 1;
if (!$this->_switch_stack[$_index]["matched"])
{
$_result .= 'switch(' . $this->_switch_stack[$_index]["var"] . '): ';
$this->_switch_stack[$_index]["matched"] = true;
}
else
{
$_result .= 'break; ';
}
if (!empty($_args['value']))
{
$_result .= 'case '.$_args['value'].': ';
}
else
{
$_result .= 'default: ';
}
return $_result . ' ?>';
}
else
{
$this->trigger_error("unexpected 'case', 'case' can only be in a 'switch'", E_USER_ERROR, __FILE__, __LINE__);
}
break;
case 'config_load':
$_args = $this->_parse_arguments($arguments);
if (empty($_args['file']))
{
$this->trigger_error("missing 'file' attribute in 'config_load' tag", E_USER_ERROR, __FILE__, __LINE__);
}
isset($_args['section']) ? null : $_args['section'] = 'null';
isset($_args['var']) ? null : $_args['var'] = 'null';
return '<?php $this->config_load(' . $_args['file'] . ', ' . $_args['section'] . ', ' . $_args['var'] . '); ?>';
break;
default:
$_result = "";
if ($this->_compile_compiler_function($function, $arguments, $_result))
{
return $_result;
}
else if ($this->_compile_custom_block($function, $modifiers, $arguments, $_result))
{
return $_result;
}
elseif ($this->_compile_custom_function($function, $modifiers, $arguments, $_result))
{
return $_result;
}
else
{
$this->trigger_error($function." function does not exist", E_USER_ERROR, __FILE__, __LINE__);
}
break;
}
}
function _compile_compiler_function($function, $arguments, &$_result)
{
if ($function = $this->_plugin_exists($function, "compiler"))
{
$_args = $this->_parse_arguments($arguments);
$_result = '<?php ' . $function($_args, $this) . ' ?>';
return true;
}
else
{
return false;
}
}
function _compile_custom_function($function, $modifiers, $arguments, &$_result)
{
if (!function_exists('compile_compile_custom_function'))
{
require_once(TEMPLATE_LITE_DIR . "internal/compile.compile_custom_function.php");
}
return compile_compile_custom_function($function, $modifiers, $arguments, $_result, $this);
}
function _compile_custom_block($function, $modifiers, $arguments, &$_result)
{
if (!function_exists('compile_compile_custom_block'))
{
require_once(TEMPLATE_LITE_DIR . "internal/compile.compile_custom_block.php");
}
return compile_compile_custom_block($function, $modifiers, $arguments, $_result, $this);
}
function _compile_if($arguments, $elseif = false, $while = false)
{
if (!function_exists('compile_compile_if'))
{
require_once(TEMPLATE_LITE_DIR . "internal/compile.compile_if.php");
}
return compile_compile_if($arguments, $elseif, $while, $this);
}
function _parse_is_expr($is_arg, $_arg)
{
if (!function_exists('compile_parse_is_expr'))
{
require_once(TEMPLATE_LITE_DIR . "internal/compile.parse_is_expr.php");
}
return compile_parse_is_expr($is_arg, $_arg, $this);
}
function _compile_config($variable)
{
if (!function_exists('compile_compile_config'))
{
require_once(TEMPLATE_LITE_DIR . "internal/compile.compile_config.php");
}
return compile_compile_config($variable, $this);
}
function _dequote($string)
{
if (($string{0} == "'" || $string{0} == '"') && $string{strlen($string)-1} == $string{0})
{
return substr($string, 1, -1);
}
else
{
return $string;
}
}
function _parse_arguments($arguments)
{
$_match = array();
$_result = array();
$_variables = array();
preg_match_all('/(?:' . $this->_qstr_regexp . ' | (?>[^"\'=\s]+))+|[=]/x', $arguments, $_match);
/*
Parse state:
0 - expecting attribute name
1 - expecting '='
2 - expecting attribute value (not '=')
*/
$state = 0;
foreach($_match[0] as $value)
{
switch($state) {
case 0:
// valid attribute name
if (is_string($value))
{
$a_name = $value;
$state = 1;
}
else
{
$this->trigger_error("invalid attribute name: '$token'", E_USER_ERROR, __FILE__, __LINE__);
}
break;
case 1:
if ($value == '=')
{
$state = 2;
}
else
{
$this->trigger_error("expecting '=' after '$last_value'", E_USER_ERROR, __FILE__, __LINE__);
}
break;
case 2:
if ($value != '=')
{
if ($value == 'yes' || $value == 'on' || $value == 'true')
{
$value = true;
}
elseif ($value == 'no' || $value == 'off' || $value == 'false')
{
$value = false;
}
elseif ($value == 'null')
{
$value = null;
}
if(!preg_match_all('/(?:(' . $this->_var_regexp . '|' . $this->_svar_regexp . ')(' . $this->_mod_regexp . '*))(?:\s+(.*))?/xs', $value, $_variables))
{
$_result[$a_name] = $value;
}
else
{
$_result[$a_name] = $this->_parse_variables($_variables[1], $_variables[2]);
}
$state = 0;
}
else
{
$this->trigger_error("'=' cannot be an attribute value", E_USER_ERROR, __FILE__, __LINE__);
}
break;
}
$last_value = $value;
}
if($state != 0)
{
if($state == 1)
{
$this->trigger_error("expecting '=' after attribute name '$last_value'", E_USER_ERROR, __FILE__, __LINE__);
}
else
{
$this->trigger_error("missing attribute value", E_USER_ERROR, __FILE__, __LINE__);
}
}
return $_result;
}
function _parse_variables($variables, $modifiers)
{
$_result = "";
foreach($variables as $key => $value)
{
$tag_variable = trim($variables[$key]);
if(!empty($this->default_modifiers) && !preg_match('!(^|\|)templatelite:nodefaults($|\|)!',$modifiers[$key]))
{
$_default_mod_string = implode('|',(array)$this->default_modifiers);
$modifiers[$key] = empty($modifiers[$key]) ? $_default_mod_string : $_default_mod_string . '|' . $modifiers[$key];
}
if (empty($modifiers[$key]))
{
$_result .= $this->_parse_variable($tag_variable).'.';
}
else
{
$_result .= $this->_parse_modifier($this->_parse_variable($tag_variable), $modifiers[$key]).'.';
}
}
return substr($_result, 0, -1);
}
function _parse_variable($variable)
{
// replace variable with value
if ($variable{0} == '$')
{
// replace the variable
return $this->_compile_variable($variable);
}
elseif ($variable{0} == '#')
{
// replace the config variable
return $this->_compile_config($variable);
}
elseif ($variable{0} == '"')
{
// expand the quotes to pull any variables out of it
// fortunately variables inside of a quote aren't fancy, no modifiers, no quotes
// just get everything from the $ to the ending space and parse it
// if the $ is escaped, then we won't expand it
$_result = "";
preg_match_all('/(?:' . $this->_dvar_regexp . ')/', substr($variable, 1, -1), $_expand); // old match
// preg_match_all('/(?:[^\\\]' . $this->_dvar_regexp . '[^\\\])/', $variable, $_expand);
$_expand = array_unique($_expand[0]);
foreach($_expand as $key => $value)
{
$_expand[$key] = trim($value);
if (strpos($_expand[$key], '$') > 0)
{
$_expand[$key] = substr($_expand[$key], strpos($_expand[$key], '$'));
}
}
$_result = $variable;
foreach($_expand as $value)
{
$value = trim($value);
$_result = str_replace($value, '" . ' . $this->_parse_variable($value) . ' . "', $_result);
}
$_result = str_replace("`", "", $_result);
return $_result;
}
elseif ($variable{0} == "'")
{
// return the value just as it is
return $variable;
}
elseif ($variable{0} == "%")
{
return $this->_parse_section_prop($variable);
}
else
{
// return it as is; i believe that there was a reason before that i did not just return it as is,
// but i forgot what that reason is ...
// the reason i return the variable 'as is' right now is so that unquoted literals are allowed
return $variable;
}
}
function _parse_section_prop($section_prop_expr)
{
$parts = explode('|', $section_prop_expr, 2);
$var_ref = $parts[0];
$modifiers = isset($parts[1]) ? $parts[1] : '';
preg_match('!%(\w+)\.(\w+)%!', $var_ref, $match);
$section_name = $match[1];
$prop_name = $match[2];
$output = "\$this->_sections['$section_name']['$prop_name']";
$this->_parse_modifier($output, $modifiers);
return $output;
}
function _compile_variable($variable)
{
$_result = "";
// remove the $
$variable = substr($variable, 1);
// get [foo] and .foo and (...) pieces
preg_match_all('!(?:^\w+)|(?:' . $this->_var_bracket_regexp . ')|\.\$?\w+|\S+!', $variable, $_match);
$variable = $_match[0];
$var_name = array_shift($variable);
if ($var_name == $this->reserved_template_varname)
{
if ($variable[0]{0} == '[' || $variable[0]{0} == '.')
{
$find = array("[", "]", ".");
switch(strtoupper(str_replace($find, "", $variable[0])))
{
case 'GET':
$_result = "\$_GET";
break;
case 'POST':
$_result = "\$_POST";
break;
case 'COOKIE':
$_result = "\$_COOKIE";
break;
case 'ENV':
$_result = "\$_ENV";
break;
case 'SERVER':
$_result = "\$_SERVER";
break;
case 'SESSION':
$_result = "\$_SESSION";
break;
case 'NOW':
$_result = "time()";
break;
case 'SECTION':
$_result = "\$this->_sections";
break;
case 'LDELIM':
$_result = "\$this->left_delimiter";
break;
case 'RDELIM':
$_result = "\$this->right_delimiter";
break;
case 'VERSION':
$_result = "\$this->_version";
break;
case 'CONFIG':
$_result = "\$this->_confs";
break;
case 'TEMPLATE':
$_result = "\$this->_file";
break;
case 'CONST':
$constant = str_replace($find, "", $_match[0][2]);
$_result = "constant('$constant')";
$variable = array();
break;
default:
$_var_name = str_replace($find, "", $variable[0]);
$_result = "\$this->_templatelite_vars['$_var_name']";
break;
}
array_shift($variable);
}
else
{
$this->trigger_error('$' . $var_name.implode('', $variable) . ' is an invalid $templatelite reference', E_USER_ERROR, __FILE__, __LINE__);
}
}
else
{
$_result = "\$this->_vars['$var_name']";
}
foreach ($variable as $var)
{
if ($var{0} == '[')
{
$var = substr($var, 1, -1);
if (is_numeric($var))
{
$_result .= "[$var]";
}
elseif ($var{0} == '$')
{
$_result .= "[" . $this->_compile_variable($var) . "]";
}
elseif ($var{0} == '#')
{
$_result .= "[" . $this->_compile_config($var) . "]";
}
else
{
// $_result .= "['$var']";
$parts = explode('.', $var);
$section = $parts[0];
$section_prop = isset($parts[1]) ? $parts[1] : 'index';
$_result .= "[\$this->_sections['$section']['$section_prop']]";
}
}
else if ($var{0} == '.')
{
if ($var{1} == '$')
{
$_result .= "[\$this->_vars['" . substr($var, 2) . "']]";
}
else
{
$_result .= "['" . substr($var, 1) . "']";
}
}
else if (substr($var,0,2) == '->')
{
if(substr($var,2,2) == '__')
{
$this->trigger_error('call to internal object members is not allowed', E_USER_ERROR, __FILE__, __LINE__);
}
else if (substr($var, 2, 1) == '$')
{
$_output .= '->{(($var=$this->_vars[\''.substr($var,3).'\']) && substr($var,0,2)!=\'__\') ? $_var : $this->trigger_error("cannot access property \\"$var\\"")}';
}
}
else
{
//$this->trigger_error('$' . $var_name.implode('', $variable) . ' is an invalid reference', E_USER_ERROR, __FILE__, __LINE__);
$_result .= ' . \'' . implode('', $variable) . '\'';
}
}
return $_result;
}
function _parse_modifier($variable, $modifiers)
{
$_match = array();
$_mods = array(); // stores all modifiers
$_args = array(); // modifier arguments
preg_match_all('!\|(@?\w+)((?>:(?:'. $this->_qstr_regexp . '|[^|]+))*)!', '|' . $modifiers, $_match);
list(, $_mods, $_args) = $_match;
$count_mods = count($_mods);