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4
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ryan
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<?php
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/*
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* Session Management for PHP3
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*
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* (C) Copyright 1999-2000 NetUSE GmbH
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* Kristian Koehntopp
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*
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522
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Ruebenwurz
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* $Id: template.inc,v 1.15 2004/07/23 20:36:29 layne_weathers Exp $
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4
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ryan
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*
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*/
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/*
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* Change log since version 7.2c
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*
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* Bug fixes to version 7.2c compiled by Richard Archer <rha@juggernaut.com.au>:
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* (credits given to first person to post a diff to phplib mailing list)
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*
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* Normalised all comments and whitespace (rha)
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* replaced "$handle" with "$varname" and "$h" with "$v" throughout (from phplib-devel)
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* added braces around all one-line if statements in: get_undefined, loadfile and halt (rha)
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* set_var was missing two sets of braces (rha)
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* added a couple of "return true" statements (rha)
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* set_unknowns had "keep" as default instead of "remove" (from phplib-devel)
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* set_file failed to check for empty strings if passed an array of filenames (phplib-devel)
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* remove @ from call to preg_replace in subst -- report errors if there are any (NickM)
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* set_block unnecessarily required a newline in the template file (Marc Tardif)
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* pparse now calls this->finish to replace undefined vars (Layne Weathers)
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* get_var now checks for unset varnames (NickM & rha)
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* get_var when passed an array used the array key instead of the value (rha)
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* get_vars now uses a call to get_var rather than this->varvals to prevent undefined var warning (rha)
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* in finish, the replacement string referenced an unset variable (rha)
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* loadfile would try to load a file if the varval had been set to "" (rha)
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* in get_undefined, only match non-whitespace in variable tags as in finish (Layne Weathers & rha)
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* more elegant fix to the problem of subst stripping '$n', '\n' and '\\' strings (rha)
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522
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Ruebenwurz
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* parse uses get_var to obtain return value (Jordi via SF)
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* set_block reports an error if the block could not be extracted (rha)
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* filename is now windows-pathname aware (krabu @ SF)
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4
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ryan
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*
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*
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* Changes in functionality which go beyond bug fixes:
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*
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522
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Ruebenwurz
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* added ability for filename comments to be output (from phplib-users layne)
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4
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ryan
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* changed debug handling so set, get and internals can be tracked separately (rha)
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* added debug statements throughout to track most function calls (rha)
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* debug output contained raw HTML -- is now escaped with htmlentities (rha)
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* Alter regex in set_block to remove more whitespace around BEGIN/END tags to improve HTML layout (rha)
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* Add "append" option to set_var, works just like append in parse (dale at linuxwebpro.com, rha)
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* Altered parse so that append is honored if passed an array (Brian)
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* Converted comments and documentation to phpdoc style (rha)
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* Added clear_var to set the value of variables to "" (rha)
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* Added unset_var to usset variables (rha)
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*
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*/
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/**
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* The template class allows you to keep your HTML code in some external files
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* which are completely free of PHP code, but contain replacement fields.
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* The class provides you with functions which can fill in the replacement fields
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* with arbitrary strings. These strings can become very large, e.g. entire tables.
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*
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* Note: If you think that this is like FastTemplates, read carefully. It isn't.
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*
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*/
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class Template
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{
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/**
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* Serialization helper, the name of this class.
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*
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* @var string
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* @access public
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*/
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var $classname = "Template";
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/**
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* Determines how much debugging output Template will produce.
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* This is a bitwise mask of available debug levels:
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* 0 = no debugging
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* 1 = debug variable assignments
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* 2 = debug calls to get variable
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* 4 = debug internals (outputs all function calls with parameters).
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*
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* Note: setting $this->debug = true will enable debugging of variable
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* assignments only which is the same behaviour as versions up to release 7.2d.
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*
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* @var int
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* @access public
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*/
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var $debug = false;
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/**
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522
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Ruebenwurz
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* Determines whether Template outputs filename comments.
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* false = no filename outputs
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* true = HTML comments (e.g. <!-- START FILE $filename -->) placed in output
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*
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* @var int
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* @access public
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*/
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var $filename_comments = false;
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/**
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* Determines the regular expression used to find unknown variable tags.
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* "loose" = traditional match all curly braces with no whitespace between
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* "strict" = adopts PHP's variable naming rules
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* ("loose" has a nasty habit of deleting JavaScript RegEx components)
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* (should future major version releases of PHPLib default this "strict"?)
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*
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* @var string
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* @access public
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*/
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var $unknown_regexp = "loose";
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/**
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4
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ryan
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* The base directory from which template files are loaded.
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*
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* @var string
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* @access private
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* @see set_root
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*/
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var $root = ".";
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/**
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* A hash of strings forming a translation table which translates variable names
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* into names of files containing the variable content.
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* $file[varname] = "filename";
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*
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* @var array
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* @access private
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* @see set_file
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*/
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var $file = array();
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/**
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* A hash of strings forming a translation table which translates variable names
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* into regular expressions for themselves.
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* $varkeys[varname] = "/varname/"
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*
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* @var array
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* @access private
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* @see set_var
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*/
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var $varkeys = array();
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/**
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* A hash of strings forming a translation table which translates variable names
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* into values for their respective varkeys.
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* $varvals[varname] = "value"
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*
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* @var array
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* @access private
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* @see set_var
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*/
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var $varvals = array();
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/**
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* Determines how to output variable tags with no assigned value in templates.
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*
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* @var string
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* @access private
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* @see set_unknowns
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*/
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var $unknowns = "remove";
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/**
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* Determines how Template handles error conditions.
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* "yes" = the error is reported, then execution is halted
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* "report" = the error is reported, then execution continues by returning "false"
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* "no" = errors are silently ignored, and execution resumes reporting "false"
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*
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* @var string
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* @access public
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* @see halt
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*/
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var $halt_on_error = "yes";
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/**
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* The last error message is retained in this variable.
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*
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* @var string
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* @access public
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* @see halt
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*/
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var $last_error = "";
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/******************************************************************************
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* Class constructor. May be called with two optional parameters.
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* The first parameter sets the template directory the second parameter
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* sets the policy regarding handling of unknown variables.
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*
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* usage: Template([string $root = "."], [string $unknowns = "remove"])
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*
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* @param $root path to template directory
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* @param $string what to do with undefined variables
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* @see set_root
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* @see set_unknowns
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* @access public
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* @return void
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*/
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function Template($root = ".", $unknowns = "remove") {
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if ($this->debug & 4) {
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echo "<p><b>Template:</b> root = $root, unknowns = $unknowns</p>\n";
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}
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$this->set_root($root);
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$this->set_unknowns($unknowns);
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}
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/******************************************************************************
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* Checks that $root is a valid directory and if so sets this directory as the
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* base directory from which templates are loaded by storing the value in
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* $this->root. Relative filenames are prepended with the path in $this->root.
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*
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* Returns true on success, false on error.
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*
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* usage: set_root(string $root)
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*
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* @param $root string containing new template directory
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* @see root
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* @access public
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* @return boolean
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*/
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function set_root($root) {
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522
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Ruebenwurz
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if(ereg('/$', $root)) {
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$root = substr($root, 0, -1);
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}
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4
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ryan
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if ($this->debug & 4) {
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echo "<p><b>set_root:</b> root = $root</p>\n";
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}
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if (!is_dir($root)) {
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$this->halt("set_root: $root is not a directory.");
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return false;
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}
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$this->root = $root;
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return true;
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}
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/******************************************************************************
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* Sets the policy for dealing with unresolved variable names.
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*
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* unknowns defines what to do with undefined template variables
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* "remove" = remove undefined variables
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* "comment" = replace undefined variables with comments
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* "keep" = keep undefined variables
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*
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* Note: "comment" can cause unexpected results when the variable tag is embedded
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* inside an HTML tag, for example a tag which is expected to be replaced with a URL.
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*
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* usage: set_unknowns(string $unknowns)
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*
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* @param $unknowns new value for unknowns
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* @see unknowns
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* @access public
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* @return void
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*/
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function set_unknowns($unknowns = "remove") {
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if ($this->debug & 4) {
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echo "<p><b>unknowns:</b> unknowns = $unknowns</p>\n";
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}
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$this->unknowns = $unknowns;
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}
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/******************************************************************************
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* Defines a filename for the initial value of a variable.
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*
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* It may be passed either a varname and a file name as two strings or
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* a hash of strings with the key being the varname and the value
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* being the file name.
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*
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* The new mappings are stored in the array $this->file.
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* The files are not loaded yet, but only when needed.
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*
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| 275 |
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* Returns true on success, false on error.
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*
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| 277 |
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* usage: set_file(array $filelist = (string $varname => string $filename))
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* or
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| 279 |
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* usage: set_file(string $varname, string $filename)
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*
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| 281 |
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* @param $varname either a string containing a varname or a hash of varname/file name pairs.
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* @param $filename if varname is a string this is the filename otherwise filename is not required
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| 283 |
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* @access public
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| 284 |
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* @return boolean
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*/
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| 286 |
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function set_file($varname, $filename = "") {
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| 287 |
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if (!is_array($varname)) {
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| 288 |
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if ($this->debug & 4) {
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echo "<p><b>set_file:</b> (with scalar) varname = $varname, filename = $filename</p>\n";
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| 290 |
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}
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| 291 |
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if ($filename == "") {
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| 292 |
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$this->halt("set_file: For varname $varname filename is empty.");
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| 293 |
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return false;
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| 294 |
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}
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| 295 |
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$this->file[$varname] = $this->filename($filename);
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| 296 |
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} else {
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| 297 |
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reset($varname);
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| 298 |
522
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Ruebenwurz
|
while (list($v, $f) = each($varname)) {
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| 299 |
4
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ryan
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if ($this->debug & 4) {
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| 300 |
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echo "<p><b>set_file:</b> (with array) varname = $v, filename = $f</p>\n";
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| 301 |
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}
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| 302 |
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if ($f == "") {
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| 303 |
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$this->halt("set_file: For varname $v filename is empty.");
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| 304 |
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return false;
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| 305 |
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}
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| 306 |
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$this->file[$v] = $this->filename($f);
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| 307 |
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}
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| 308 |
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}
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| 309 |
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return true;
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| 310 |
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}
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| 311 |
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| 312 |
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| 313 |
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/******************************************************************************
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| 314 |
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* A variable $parent may contain a variable block defined by:
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| 315 |
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* <!-- BEGIN $varname --> content <!-- END $varname -->. This function removes
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| 316 |
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* that block from $parent and replaces it with a variable reference named $name.
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| 317 |
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* The block is inserted into the varkeys and varvals hashes. If $name is
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| 318 |
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* omitted, it is assumed to be the same as $varname.
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*
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| 320 |
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* Blocks may be nested but care must be taken to extract the blocks in order
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| 321 |
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* from the innermost block to the outermost block.
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*
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| 323 |
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* Returns true on success, false on error.
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| 324 |
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*
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| 325 |
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* usage: set_block(string $parent, string $varname, [string $name = ""])
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| 326 |
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*
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| 327 |
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* @param $parent a string containing the name of the parent variable
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| 328 |
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* @param $varname a string containing the name of the block to be extracted
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| 329 |
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* @param $name the name of the variable in which to store the block
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| 330 |
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* @access public
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| 331 |
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* @return boolean
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| 332 |
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*/
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| 333 |
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function set_block($parent, $varname, $name = "") {
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| 334 |
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if ($this->debug & 4) {
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| 335 |
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echo "<p><b>set_block:</b> parent = $parent, varname = $varname, name = $name</p>\n";
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| 336 |
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}
|
| 337 |
|
|
if (!$this->loadfile($parent)) {
|
| 338 |
|
|
$this->halt("set_block: unable to load $parent.");
|
| 339 |
|
|
return false;
|
| 340 |
|
|
}
|
| 341 |
|
|
if ($name == "") {
|
| 342 |
|
|
$name = $varname;
|
| 343 |
|
|
}
|
| 344 |
|
|
|
| 345 |
|
|
$str = $this->get_var($parent);
|
| 346 |
|
|
$reg = "/[ \t]*<!--\s+BEGIN $varname\s+-->\s*?\n?(\s*.*?\n?)\s*<!--\s+END $varname\s+-->\s*?\n?/sm";
|
| 347 |
|
|
preg_match_all($reg, $str, $m);
|
| 348 |
522
|
Ruebenwurz
|
if (!isset($m[1][0])) {
|
| 349 |
|
|
$this->halt("set_block: unable to set block $varname.");
|
| 350 |
|
|
return false;
|
| 351 |
|
|
}
|
| 352 |
|
|
$str = preg_replace($reg, "{" . $name . "}", $str);
|
| 353 |
4
|
ryan
|
$this->set_var($varname, $m[1][0]);
|
| 354 |
|
|
$this->set_var($parent, $str);
|
| 355 |
|
|
return true;
|
| 356 |
|
|
}
|
| 357 |
|
|
|
| 358 |
|
|
|
| 359 |
|
|
/******************************************************************************
|
| 360 |
|
|
* This functions sets the value of a variable.
|
| 361 |
|
|
*
|
| 362 |
|
|
* It may be called with either a varname and a value as two strings or an
|
| 363 |
|
|
* an associative array with the key being the varname and the value being
|
| 364 |
|
|
* the new variable value.
|
| 365 |
|
|
*
|
| 366 |
|
|
* The function inserts the new value of the variable into the $varkeys and
|
| 367 |
|
|
* $varvals hashes. It is not necessary for a variable to exist in these hashes
|
| 368 |
|
|
* before calling this function.
|
| 369 |
|
|
*
|
| 370 |
|
|
* An optional third parameter allows the value for each varname to be appended
|
| 371 |
|
|
* to the existing variable instead of replacing it. The default is to replace.
|
| 372 |
|
|
* This feature was introduced after the 7.2d release.
|
| 373 |
|
|
*
|
| 374 |
|
|
*
|
| 375 |
|
|
* usage: set_var(string $varname, [string $value = ""], [boolean $append = false])
|
| 376 |
|
|
* or
|
| 377 |
|
|
* usage: set_var(array $varname = (string $varname => string $value), [mixed $dummy_var], [boolean $append = false])
|
| 378 |
|
|
*
|
| 379 |
|
|
* @param $varname either a string containing a varname or a hash of varname/value pairs.
|
| 380 |
|
|
* @param $value if $varname is a string this contains the new value for the variable otherwise this parameter is ignored
|
| 381 |
|
|
* @param $append if true, the value is appended to the variable's existing value
|
| 382 |
|
|
* @access public
|
| 383 |
|
|
* @return void
|
| 384 |
|
|
*/
|
| 385 |
|
|
function set_var($varname, $value = "", $append = false) {
|
| 386 |
|
|
if (!is_array($varname)) {
|
| 387 |
|
|
if (!empty($varname)) {
|
| 388 |
|
|
if ($this->debug & 1) {
|
| 389 |
|
|
printf("<b>set_var:</b> (with scalar) <b>%s</b> = '%s'<br>\n", $varname, htmlentities($value));
|
| 390 |
|
|
}
|
| 391 |
|
|
$this->varkeys[$varname] = "/".$this->varname($varname)."/";
|
| 392 |
|
|
if ($append && isset($this->varvals[$varname])) {
|
| 393 |
|
|
$this->varvals[$varname] .= $value;
|
| 394 |
|
|
} else {
|
| 395 |
|
|
$this->varvals[$varname] = $value;
|
| 396 |
|
|
}
|
| 397 |
|
|
}
|
| 398 |
|
|
} else {
|
| 399 |
|
|
reset($varname);
|
| 400 |
522
|
Ruebenwurz
|
while (list($k, $v) = each($varname)) {
|
| 401 |
4
|
ryan
|
if (!empty($k)) {
|
| 402 |
|
|
if ($this->debug & 1) {
|
| 403 |
|
|
printf("<b>set_var:</b> (with array) <b>%s</b> = '%s'<br>\n", $k, htmlentities($v));
|
| 404 |
|
|
}
|
| 405 |
|
|
$this->varkeys[$k] = "/".$this->varname($k)."/";
|
| 406 |
|
|
if ($append && isset($this->varvals[$k])) {
|
| 407 |
|
|
$this->varvals[$k] .= $v;
|
| 408 |
|
|
} else {
|
| 409 |
|
|
$this->varvals[$k] = $v;
|
| 410 |
|
|
}
|
| 411 |
|
|
}
|
| 412 |
|
|
}
|
| 413 |
|
|
}
|
| 414 |
|
|
}
|
| 415 |
|
|
|
| 416 |
|
|
|
| 417 |
|
|
/******************************************************************************
|
| 418 |
|
|
* This functions clears the value of a variable.
|
| 419 |
|
|
*
|
| 420 |
|
|
* It may be called with either a varname as a string or an array with the
|
| 421 |
|
|
* values being the varnames to be cleared.
|
| 422 |
|
|
*
|
| 423 |
|
|
* The function sets the value of the variable in the $varkeys and $varvals
|
| 424 |
|
|
* hashes to "". It is not necessary for a variable to exist in these hashes
|
| 425 |
|
|
* before calling this function.
|
| 426 |
|
|
*
|
| 427 |
|
|
*
|
| 428 |
|
|
* usage: clear_var(string $varname)
|
| 429 |
|
|
* or
|
| 430 |
|
|
* usage: clear_var(array $varname = (string $varname))
|
| 431 |
|
|
*
|
| 432 |
|
|
* @param $varname either a string containing a varname or an array of varnames.
|
| 433 |
|
|
* @access public
|
| 434 |
|
|
* @return void
|
| 435 |
|
|
*/
|
| 436 |
|
|
function clear_var($varname) {
|
| 437 |
|
|
if (!is_array($varname)) {
|
| 438 |
|
|
if (!empty($varname)) {
|
| 439 |
|
|
if ($this->debug & 1) {
|
| 440 |
|
|
printf("<b>clear_var:</b> (with scalar) <b>%s</b><br>\n", $varname);
|
| 441 |
|
|
}
|
| 442 |
|
|
$this->set_var($varname, "");
|
| 443 |
|
|
}
|
| 444 |
|
|
} else {
|
| 445 |
|
|
reset($varname);
|
| 446 |
522
|
Ruebenwurz
|
while (list($k, $v) = each($varname)) {
|
| 447 |
4
|
ryan
|
if (!empty($v)) {
|
| 448 |
|
|
if ($this->debug & 1) {
|
| 449 |
|
|
printf("<b>clear_var:</b> (with array) <b>%s</b><br>\n", $v);
|
| 450 |
|
|
}
|
| 451 |
|
|
$this->set_var($v, "");
|
| 452 |
|
|
}
|
| 453 |
|
|
}
|
| 454 |
|
|
}
|
| 455 |
|
|
}
|
| 456 |
|
|
|
| 457 |
|
|
|
| 458 |
|
|
/******************************************************************************
|
| 459 |
|
|
* This functions unsets a variable completely.
|
| 460 |
|
|
*
|
| 461 |
|
|
* It may be called with either a varname as a string or an array with the
|
| 462 |
|
|
* values being the varnames to be cleared.
|
| 463 |
|
|
*
|
| 464 |
|
|
* The function removes the variable from the $varkeys and $varvals hashes.
|
| 465 |
|
|
* It is not necessary for a variable to exist in these hashes before calling
|
| 466 |
|
|
* this function.
|
| 467 |
|
|
*
|
| 468 |
|
|
*
|
| 469 |
|
|
* usage: unset_var(string $varname)
|
| 470 |
|
|
* or
|
| 471 |
|
|
* usage: unset_var(array $varname = (string $varname))
|
| 472 |
|
|
*
|
| 473 |
|
|
* @param $varname either a string containing a varname or an array of varnames.
|
| 474 |
|
|
* @access public
|
| 475 |
|
|
* @return void
|
| 476 |
|
|
*/
|
| 477 |
|
|
function unset_var($varname) {
|
| 478 |
|
|
if (!is_array($varname)) {
|
| 479 |
|
|
if (!empty($varname)) {
|
| 480 |
|
|
if ($this->debug & 1) {
|
| 481 |
|
|
printf("<b>unset_var:</b> (with scalar) <b>%s</b><br>\n", $varname);
|
| 482 |
|
|
}
|
| 483 |
|
|
unset($this->varkeys[$varname]);
|
| 484 |
|
|
unset($this->varvals[$varname]);
|
| 485 |
|
|
}
|
| 486 |
|
|
} else {
|
| 487 |
|
|
reset($varname);
|
| 488 |
522
|
Ruebenwurz
|
while (list($k, $v) = each($varname)) {
|
| 489 |
4
|
ryan
|
if (!empty($v)) {
|
| 490 |
|
|
if ($this->debug & 1) {
|
| 491 |
|
|
printf("<b>unset_var:</b> (with array) <b>%s</b><br>\n", $v);
|
| 492 |
|
|
}
|
| 493 |
|
|
unset($this->varkeys[$v]);
|
| 494 |
|
|
unset($this->varvals[$v]);
|
| 495 |
|
|
}
|
| 496 |
|
|
}
|
| 497 |
|
|
}
|
| 498 |
|
|
}
|
| 499 |
|
|
|
| 500 |
|
|
|
| 501 |
|
|
/******************************************************************************
|
| 502 |
|
|
* This function fills in all the variables contained within the variable named
|
| 503 |
|
|
* $varname. The resulting value is returned as the function result and the
|
| 504 |
|
|
* original value of the variable varname is not changed. The resulting string
|
| 505 |
|
|
* is not "finished", that is, the unresolved variable name policy has not been
|
| 506 |
|
|
* applied yet.
|
| 507 |
|
|
*
|
| 508 |
|
|
* Returns: the value of the variable $varname with all variables substituted.
|
| 509 |
|
|
*
|
| 510 |
|
|
* usage: subst(string $varname)
|
| 511 |
|
|
*
|
| 512 |
|
|
* @param $varname the name of the variable within which variables are to be substituted
|
| 513 |
|
|
* @access public
|
| 514 |
|
|
* @return string
|
| 515 |
|
|
*/
|
| 516 |
|
|
function subst($varname) {
|
| 517 |
|
|
$varvals_quoted = array();
|
| 518 |
|
|
if ($this->debug & 4) {
|
| 519 |
|
|
echo "<p><b>subst:</b> varname = $varname</p>\n";
|
| 520 |
|
|
}
|
| 521 |
|
|
if (!$this->loadfile($varname)) {
|
| 522 |
|
|
$this->halt("subst: unable to load $varname.");
|
| 523 |
|
|
return false;
|
| 524 |
|
|
}
|
| 525 |
|
|
|
| 526 |
|
|
// quote the replacement strings to prevent bogus stripping of special chars
|
| 527 |
|
|
reset($this->varvals);
|
| 528 |
522
|
Ruebenwurz
|
while (list($k, $v) = each($this->varvals)) {
|
| 529 |
4
|
ryan
|
$varvals_quoted[$k] = preg_replace(array('/\\\\/', '/\$/'), array('\\\\\\\\', '\\\\$'), $v);
|
| 530 |
|
|
}
|
| 531 |
|
|
|
| 532 |
|
|
$str = $this->get_var($varname);
|
| 533 |
|
|
$str = preg_replace($this->varkeys, $varvals_quoted, $str);
|
| 534 |
|
|
return $str;
|
| 535 |
|
|
}
|
| 536 |
|
|
|
| 537 |
|
|
|
| 538 |
|
|
/******************************************************************************
|
| 539 |
|
|
* This is shorthand for print $this->subst($varname). See subst for further
|
| 540 |
|
|
* details.
|
| 541 |
|
|
*
|
| 542 |
|
|
* Returns: always returns false.
|
| 543 |
|
|
*
|
| 544 |
|
|
* usage: psubst(string $varname)
|
| 545 |
|
|
*
|
| 546 |
|
|
* @param $varname the name of the variable within which variables are to be substituted
|
| 547 |
|
|
* @access public
|
| 548 |
|
|
* @return false
|
| 549 |
|
|
* @see subst
|
| 550 |
|
|
*/
|
| 551 |
|
|
function psubst($varname) {
|
| 552 |
|
|
if ($this->debug & 4) {
|
| 553 |
|
|
echo "<p><b>psubst:</b> varname = $varname</p>\n";
|
| 554 |
|
|
}
|
| 555 |
|
|
print $this->subst($varname);
|
| 556 |
|
|
|
| 557 |
|
|
return false;
|
| 558 |
|
|
}
|
| 559 |
|
|
|
| 560 |
|
|
|
| 561 |
|
|
/******************************************************************************
|
| 562 |
|
|
* The function substitutes the values of all defined variables in the variable
|
| 563 |
|
|
* named $varname and stores or appends the result in the variable named $target.
|
| 564 |
|
|
*
|
| 565 |
|
|
* It may be called with either a target and a varname as two strings or a
|
| 566 |
|
|
* target as a string and an array of variable names in varname.
|
| 567 |
|
|
*
|
| 568 |
|
|
* The function inserts the new value of the variable into the $varkeys and
|
| 569 |
|
|
* $varvals hashes. It is not necessary for a variable to exist in these hashes
|
| 570 |
|
|
* before calling this function.
|
| 571 |
|
|
*
|
| 572 |
|
|
* An optional third parameter allows the value for each varname to be appended
|
| 573 |
|
|
* to the existing target variable instead of replacing it. The default is to
|
| 574 |
|
|
* replace.
|
| 575 |
|
|
*
|
| 576 |
|
|
* If $target and $varname are both strings, the substituted value of the
|
| 577 |
|
|
* variable $varname is inserted into or appended to $target.
|
| 578 |
|
|
*
|
| 579 |
|
|
* If $handle is an array of variable names the variables named by $handle are
|
| 580 |
|
|
* sequentially substituted and the result of each substitution step is
|
| 581 |
|
|
* inserted into or appended to in $target. The resulting substitution is
|
| 582 |
|
|
* available in the variable named by $target, as is each intermediate step
|
| 583 |
|
|
* for the next $varname in sequence. Note that while it is possible, it
|
| 584 |
|
|
* is only rarely desirable to call this function with an array of varnames
|
| 585 |
|
|
* and with $append = true. This append feature was introduced after the 7.2d
|
| 586 |
|
|
* release.
|
| 587 |
|
|
*
|
| 588 |
|
|
* Returns: the last value assigned to $target.
|
| 589 |
|
|
*
|
| 590 |
|
|
* usage: parse(string $target, string $varname, [boolean $append])
|
| 591 |
|
|
* or
|
| 592 |
|
|
* usage: parse(string $target, array $varname = (string $varname), [boolean $append])
|
| 593 |
|
|
*
|
| 594 |
|
|
* @param $target a string containing the name of the variable into which substituted $varnames are to be stored
|
| 595 |
|
|
* @param $varname if a string, the name the name of the variable to substitute or if an array a list of variables to be substituted
|
| 596 |
|
|
* @param $append if true, the substituted variables are appended to $target otherwise the existing value of $target is replaced
|
| 597 |
|
|
* @access public
|
| 598 |
|
|
* @return string
|
| 599 |
|
|
* @see subst
|
| 600 |
|
|
*/
|
| 601 |
|
|
function parse($target, $varname, $append = false) {
|
| 602 |
|
|
if (!is_array($varname)) {
|
| 603 |
|
|
if ($this->debug & 4) {
|
| 604 |
|
|
echo "<p><b>parse:</b> (with scalar) target = $target, varname = $varname, append = $append</p>\n";
|
| 605 |
|
|
}
|
| 606 |
|
|
$str = $this->subst($varname);
|
| 607 |
|
|
if ($append) {
|
| 608 |
|
|
$this->set_var($target, $this->get_var($target) . $str);
|
| 609 |
|
|
} else {
|
| 610 |
|
|
$this->set_var($target, $str);
|
| 611 |
|
|
}
|
| 612 |
|
|
} else {
|
| 613 |
|
|
reset($varname);
|
| 614 |
522
|
Ruebenwurz
|
while (list($i, $v) = each($varname)) {
|
| 615 |
4
|
ryan
|
if ($this->debug & 4) {
|
| 616 |
|
|
echo "<p><b>parse:</b> (with array) target = $target, i = $i, varname = $v, append = $append</p>\n";
|
| 617 |
|
|
}
|
| 618 |
|
|
$str = $this->subst($v);
|
| 619 |
|
|
if ($append) {
|
| 620 |
|
|
$this->set_var($target, $this->get_var($target) . $str);
|
| 621 |
|
|
} else {
|
| 622 |
|
|
$this->set_var($target, $str);
|
| 623 |
|
|
}
|
| 624 |
|
|
}
|
| 625 |
|
|
}
|
| 626 |
|
|
|
| 627 |
|
|
if ($this->debug & 4) {
|
| 628 |
|
|
echo "<p><b>parse:</b> completed</p>\n";
|
| 629 |
|
|
}
|
| 630 |
522
|
Ruebenwurz
|
return $this->get_var($target);
|
| 631 |
4
|
ryan
|
}
|
| 632 |
|
|
|
| 633 |
|
|
|
| 634 |
|
|
/******************************************************************************
|
| 635 |
|
|
* This is shorthand for print $this->parse(...) and is functionally identical.
|
| 636 |
|
|
* See parse for further details.
|
| 637 |
|
|
*
|
| 638 |
|
|
* Returns: always returns false.
|
| 639 |
|
|
*
|
| 640 |
|
|
* usage: pparse(string $target, string $varname, [boolean $append])
|
| 641 |
|
|
* or
|
| 642 |
|
|
* usage: pparse(string $target, array $varname = (string $varname), [boolean $append])
|
| 643 |
|
|
*
|
| 644 |
|
|
* @param $target a string containing the name of the variable into which substituted $varnames are to be stored
|
| 645 |
|
|
* @param $varname if a string, the name the name of the variable to substitute or if an array a list of variables to be substituted
|
| 646 |
|
|
* @param $append if true, the substituted variables are appended to $target otherwise the existing value of $target is replaced
|
| 647 |
|
|
* @access public
|
| 648 |
|
|
* @return false
|
| 649 |
|
|
* @see parse
|
| 650 |
|
|
*/
|
| 651 |
569
|
thorn
|
function pparse($target, $varname, $append = false, $clear = true) { // added $clear: whether to delete undefined vars or not (needed for wb-module code) - thorn
|
| 652 |
4
|
ryan
|
if ($this->debug & 4) {
|
| 653 |
|
|
echo "<p><b>pparse:</b> passing parameters to parse...</p>\n";
|
| 654 |
|
|
}
|
| 655 |
569
|
thorn
|
if($clear)
|
| 656 |
|
|
print $this->finish($this->parse($target, $varname, $append));
|
| 657 |
|
|
else
|
| 658 |
|
|
print $this->parse($target, $varname, $append);
|
| 659 |
4
|
ryan
|
return false;
|
| 660 |
|
|
}
|
| 661 |
|
|
|
| 662 |
|
|
|
| 663 |
|
|
/******************************************************************************
|
| 664 |
|
|
* This function returns an associative array of all defined variables with the
|
| 665 |
|
|
* name as the key and the value of the variable as the value.
|
| 666 |
|
|
*
|
| 667 |
|
|
* This is mostly useful for debugging. Also note that $this->debug can be used
|
| 668 |
|
|
* to echo all variable assignments as they occur and to trace execution.
|
| 669 |
|
|
*
|
| 670 |
|
|
* Returns: a hash of all defined variable values keyed by their names.
|
| 671 |
|
|
*
|
| 672 |
|
|
* usage: get_vars()
|
| 673 |
|
|
*
|
| 674 |
|
|
* @access public
|
| 675 |
|
|
* @return array
|
| 676 |
|
|
* @see $debug
|
| 677 |
|
|
*/
|
| 678 |
|
|
function get_vars() {
|
| 679 |
|
|
if ($this->debug & 4) {
|
| 680 |
|
|
echo "<p><b>get_vars:</b> constructing array of vars...</p>\n";
|
| 681 |
|
|
}
|
| 682 |
|
|
reset($this->varkeys);
|
| 683 |
522
|
Ruebenwurz
|
while (list($k, $v) = each($this->varkeys)) {
|
| 684 |
4
|
ryan
|
$result[$k] = $this->get_var($k);
|
| 685 |
|
|
}
|
| 686 |
|
|
return $result;
|
| 687 |
|
|
}
|
| 688 |
|
|
|
| 689 |
|
|
|
| 690 |
|
|
/******************************************************************************
|
| 691 |
|
|
* This function returns the value of the variable named by $varname.
|
| 692 |
|
|
* If $varname references a file and that file has not been loaded yet, the
|
| 693 |
|
|
* variable will be reported as empty.
|
| 694 |
|
|
*
|
| 695 |
|
|
* When called with an array of variable names this function will return a a
|
| 696 |
|
|
* hash of variable values keyed by their names.
|
| 697 |
|
|
*
|
| 698 |
|
|
* Returns: a string or an array containing the value of $varname.
|
| 699 |
|
|
*
|
| 700 |
|
|
* usage: get_var(string $varname)
|
| 701 |
|
|
* or
|
| 702 |
|
|
* usage: get_var(array $varname)
|
| 703 |
|
|
*
|
| 704 |
|
|
* @param $varname if a string, the name the name of the variable to get the value of, or if an array a list of variables to return the value of
|
| 705 |
|
|
* @access public
|
| 706 |
|
|
* @return string or array
|
| 707 |
|
|
*/
|
| 708 |
|
|
function get_var($varname) {
|
| 709 |
|
|
if (!is_array($varname)) {
|
| 710 |
|
|
if (isset($this->varvals[$varname])) {
|
| 711 |
|
|
$str = $this->varvals[$varname];
|
| 712 |
|
|
} else {
|
| 713 |
|
|
$str = "";
|
| 714 |
|
|
}
|
| 715 |
|
|
if ($this->debug & 2) {
|
| 716 |
|
|
printf ("<b>get_var</b> (with scalar) <b>%s</b> = '%s'<br>\n", $varname, htmlentities($str));
|
| 717 |
|
|
}
|
| 718 |
|
|
return $str;
|
| 719 |
|
|
} else {
|
| 720 |
|
|
reset($varname);
|
| 721 |
522
|
Ruebenwurz
|
while (list($k, $v) = each($varname)) {
|
| 722 |
4
|
ryan
|
if (isset($this->varvals[$v])) {
|
| 723 |
|
|
$str = $this->varvals[$v];
|
| 724 |
|
|
} else {
|
| 725 |
|
|
$str = "";
|
| 726 |
|
|
}
|
| 727 |
|
|
if ($this->debug & 2) {
|
| 728 |
|
|
printf ("<b>get_var:</b> (with array) <b>%s</b> = '%s'<br>\n", $v, htmlentities($str));
|
| 729 |
|
|
}
|
| 730 |
|
|
$result[$v] = $str;
|
| 731 |
|
|
}
|
| 732 |
|
|
return $result;
|
| 733 |
|
|
}
|
| 734 |
|
|
}
|
| 735 |
|
|
|
| 736 |
|
|
|
| 737 |
|
|
/******************************************************************************
|
| 738 |
|
|
* This function returns a hash of unresolved variable names in $varname, keyed
|
| 739 |
|
|
* by their names (that is, the hash has the form $a[$name] = $name).
|
| 740 |
|
|
*
|
| 741 |
|
|
* Returns: a hash of varname/varname pairs or false on error.
|
| 742 |
|
|
*
|
| 743 |
|
|
* usage: get_undefined(string $varname)
|
| 744 |
|
|
*
|
| 745 |
|
|
* @param $varname a string containing the name the name of the variable to scan for unresolved variables
|
| 746 |
|
|
* @access public
|
| 747 |
|
|
* @return array
|
| 748 |
|
|
*/
|
| 749 |
|
|
function get_undefined($varname) {
|
| 750 |
|
|
if ($this->debug & 4) {
|
| 751 |
|
|
echo "<p><b>get_undefined:</b> varname = $varname</p>\n";
|
| 752 |
|
|
}
|
| 753 |
|
|
if (!$this->loadfile($varname)) {
|
| 754 |
|
|
$this->halt("get_undefined: unable to load $varname.");
|
| 755 |
|
|
return false;
|
| 756 |
|
|
}
|
| 757 |
|
|
|
| 758 |
522
|
Ruebenwurz
|
preg_match_all(
|
| 759 |
|
|
(("loose" == $this->unknown_regexp) ? "/{([^ \t\r\n}]+)}/" : "/{([_a-zA-Z]\\w+)}/"),
|
| 760 |
|
|
$this->get_var($varname),
|
| 761 |
|
|
$m);
|
| 762 |
4
|
ryan
|
$m = $m[1];
|
| 763 |
|
|
if (!is_array($m)) {
|
| 764 |
|
|
return false;
|
| 765 |
|
|
}
|
| 766 |
|
|
|
| 767 |
|
|
reset($m);
|
| 768 |
522
|
Ruebenwurz
|
while (list($k, $v) = each($m)) {
|
| 769 |
4
|
ryan
|
if (!isset($this->varkeys[$v])) {
|
| 770 |
|
|
if ($this->debug & 4) {
|
| 771 |
|
|
echo "<p><b>get_undefined:</b> undefined: $v</p>\n";
|
| 772 |
|
|
}
|
| 773 |
|
|
$result[$v] = $v;
|
| 774 |
|
|
}
|
| 775 |
|
|
}
|
| 776 |
|
|
|
| 777 |
|
|
if (count($result)) {
|
| 778 |
|
|
return $result;
|
| 779 |
|
|
} else {
|
| 780 |
|
|
return false;
|
| 781 |
|
|
}
|
| 782 |
|
|
}
|
| 783 |
|
|
|
| 784 |
|
|
|
| 785 |
|
|
/******************************************************************************
|
| 786 |
|
|
* This function returns the finished version of $str. That is, the policy
|
| 787 |
|
|
* regarding unresolved variable names will be applied to $str.
|
| 788 |
|
|
*
|
| 789 |
|
|
* Returns: a finished string derived from $str and $this->unknowns.
|
| 790 |
|
|
*
|
| 791 |
|
|
* usage: finish(string $str)
|
| 792 |
|
|
*
|
| 793 |
|
|
* @param $str a string to which to apply the unresolved variable policy
|
| 794 |
|
|
* @access public
|
| 795 |
|
|
* @return string
|
| 796 |
|
|
* @see set_unknowns
|
| 797 |
|
|
*/
|
| 798 |
|
|
function finish($str) {
|
| 799 |
|
|
switch ($this->unknowns) {
|
| 800 |
|
|
case "keep":
|
| 801 |
|
|
break;
|
| 802 |
|
|
|
| 803 |
|
|
case "remove":
|
| 804 |
522
|
Ruebenwurz
|
$str = preg_replace(
|
| 805 |
|
|
(("loose" == $this->unknown_regexp) ? "/{([^ \t\r\n}]+)}/" : "/{([_a-zA-Z]\\w+)}/"),
|
| 806 |
|
|
"",
|
| 807 |
|
|
$str);
|
| 808 |
4
|
ryan
|
break;
|
| 809 |
|
|
|
| 810 |
|
|
case "comment":
|
| 811 |
522
|
Ruebenwurz
|
$str = preg_replace(
|
| 812 |
|
|
(("loose" == $this->unknown_regexp) ? "/{([^ \t\r\n}]+)}/" : "/{([_a-zA-Z]\\w+)}/"),
|
| 813 |
|
|
"<!-- Template variable \\1 undefined -->",
|
| 814 |
|
|
$str);
|
| 815 |
4
|
ryan
|
break;
|
| 816 |
|
|
}
|
| 817 |
|
|
|
| 818 |
|
|
return $str;
|
| 819 |
|
|
}
|
| 820 |
|
|
|
| 821 |
|
|
|
| 822 |
|
|
/******************************************************************************
|
| 823 |
|
|
* This function prints the finished version of the value of the variable named
|
| 824 |
|
|
* by $varname. That is, the policy regarding unresolved variable names will be
|
| 825 |
|
|
* applied to the variable $varname then it will be printed.
|
| 826 |
|
|
*
|
| 827 |
|
|
* usage: p(string $varname)
|
| 828 |
|
|
*
|
| 829 |
|
|
* @param $varname a string containing the name of the variable to finish and print
|
| 830 |
|
|
* @access public
|
| 831 |
|
|
* @return void
|
| 832 |
|
|
* @see set_unknowns
|
| 833 |
|
|
* @see finish
|
| 834 |
|
|
*/
|
| 835 |
|
|
function p($varname) {
|
| 836 |
|
|
print $this->finish($this->get_var($varname));
|
| 837 |
|
|
}
|
| 838 |
|
|
|
| 839 |
|
|
|
| 840 |
|
|
/******************************************************************************
|
| 841 |
|
|
* This function returns the finished version of the value of the variable named
|
| 842 |
|
|
* by $varname. That is, the policy regarding unresolved variable names will be
|
| 843 |
|
|
* applied to the variable $varname and the result returned.
|
| 844 |
|
|
*
|
| 845 |
|
|
* Returns: a finished string derived from the variable $varname.
|
| 846 |
|
|
*
|
| 847 |
|
|
* usage: get(string $varname)
|
| 848 |
|
|
*
|
| 849 |
|
|
* @param $varname a string containing the name of the variable to finish
|
| 850 |
|
|
* @access public
|
| 851 |
|
|
* @return void
|
| 852 |
|
|
* @see set_unknowns
|
| 853 |
|
|
* @see finish
|
| 854 |
|
|
*/
|
| 855 |
|
|
function get($varname) {
|
| 856 |
|
|
return $this->finish($this->get_var($varname));
|
| 857 |
|
|
}
|
| 858 |
|
|
|
| 859 |
|
|
|
| 860 |
|
|
/******************************************************************************
|
| 861 |
|
|
* When called with a relative pathname, this function will return the pathname
|
| 862 |
|
|
* with $this->root prepended. Absolute pathnames are returned unchanged.
|
| 863 |
|
|
*
|
| 864 |
|
|
* Returns: a string containing an absolute pathname.
|
| 865 |
|
|
*
|
| 866 |
|
|
* usage: filename(string $filename)
|
| 867 |
|
|
*
|
| 868 |
|
|
* @param $filename a string containing a filename
|
| 869 |
|
|
* @access private
|
| 870 |
|
|
* @return string
|
| 871 |
|
|
* @see set_root
|
| 872 |
|
|
*/
|
| 873 |
|
|
function filename($filename) {
|
| 874 |
|
|
if ($this->debug & 4) {
|
| 875 |
|
|
echo "<p><b>filename:</b> filename = $filename</p>\n";
|
| 876 |
|
|
}
|
| 877 |
522
|
Ruebenwurz
|
if (substr($filename, 0, 1) != "/"
|
| 878 |
|
|
&& substr($filename, 0, 1) != "\\"
|
| 879 |
|
|
&& substr($filename, 1, 2) != ":\\"
|
| 880 |
|
|
&& substr($filename, 1, 2) != ":/"
|
| 881 |
|
|
) {
|
| 882 |
4
|
ryan
|
$filename = $this->root."/".$filename;
|
| 883 |
|
|
}
|
| 884 |
|
|
|
| 885 |
|
|
if (!file_exists($filename)) {
|
| 886 |
|
|
$this->halt("filename: file $filename does not exist.");
|
| 887 |
|
|
}
|
| 888 |
|
|
return $filename;
|
| 889 |
|
|
}
|
| 890 |
|
|
|
| 891 |
|
|
|
| 892 |
|
|
/******************************************************************************
|
| 893 |
|
|
* This function will construct a regexp for a given variable name with any
|
| 894 |
|
|
* special chars quoted.
|
| 895 |
|
|
*
|
| 896 |
|
|
* Returns: a string containing an escaped variable name.
|
| 897 |
|
|
*
|
| 898 |
|
|
* usage: varname(string $varname)
|
| 899 |
|
|
*
|
| 900 |
|
|
* @param $varname a string containing a variable name
|
| 901 |
|
|
* @access private
|
| 902 |
|
|
* @return string
|
| 903 |
|
|
*/
|
| 904 |
|
|
function varname($varname) {
|
| 905 |
522
|
Ruebenwurz
|
return preg_quote("{" . $varname . "}");
|
| 906 |
4
|
ryan
|
}
|
| 907 |
|
|
|
| 908 |
|
|
|
| 909 |
|
|
/******************************************************************************
|
| 910 |
|
|
* If a variable's value is undefined and the variable has a filename stored in
|
| 911 |
|
|
* $this->file[$varname] then the backing file will be loaded and the file's
|
| 912 |
|
|
* contents will be assigned as the variable's value.
|
| 913 |
|
|
*
|
| 914 |
|
|
* Note that the behaviour of this function changed slightly after the 7.2d
|
| 915 |
|
|
* release. Where previously a variable was reloaded from file if the value
|
| 916 |
|
|
* was empty, now this is not done. This allows a variable to be loaded then
|
| 917 |
|
|
* set to "", and also prevents attempts to load empty variables. Files are
|
| 918 |
|
|
* now only loaded if $this->varvals[$varname] is unset.
|
| 919 |
|
|
*
|
| 920 |
|
|
* Returns: true on success, false on error.
|
| 921 |
|
|
*
|
| 922 |
|
|
* usage: loadfile(string $varname)
|
| 923 |
|
|
*
|
| 924 |
|
|
* @param $varname a string containing the name of a variable to load
|
| 925 |
|
|
* @access private
|
| 926 |
|
|
* @return boolean
|
| 927 |
|
|
* @see set_file
|
| 928 |
|
|
*/
|
| 929 |
|
|
function loadfile($varname) {
|
| 930 |
|
|
if ($this->debug & 4) {
|
| 931 |
|
|
echo "<p><b>loadfile:</b> varname = $varname</p>\n";
|
| 932 |
|
|
}
|
| 933 |
|
|
|
| 934 |
|
|
if (!isset($this->file[$varname])) {
|
| 935 |
|
|
// $varname does not reference a file so return
|
| 936 |
|
|
if ($this->debug & 4) {
|
| 937 |
|
|
echo "<p><b>loadfile:</b> varname $varname does not reference a file</p>\n";
|
| 938 |
|
|
}
|
| 939 |
|
|
return true;
|
| 940 |
|
|
}
|
| 941 |
|
|
|
| 942 |
|
|
if (isset($this->varvals[$varname])) {
|
| 943 |
|
|
// will only be unset if varname was created with set_file and has never been loaded
|
| 944 |
|
|
// $varname has already been loaded so return
|
| 945 |
|
|
if ($this->debug & 4) {
|
| 946 |
|
|
echo "<p><b>loadfile:</b> varname $varname is already loaded</p>\n";
|
| 947 |
|
|
}
|
| 948 |
|
|
return true;
|
| 949 |
|
|
}
|
| 950 |
|
|
$filename = $this->file[$varname];
|
| 951 |
|
|
|
| 952 |
|
|
/* use @file here to avoid leaking filesystem information if there is an error */
|
| 953 |
|
|
$str = implode("", @file($filename));
|
| 954 |
|
|
if (empty($str)) {
|
| 955 |
|
|
$this->halt("loadfile: While loading $varname, $filename does not exist or is empty.");
|
| 956 |
|
|
return false;
|
| 957 |
|
|
}
|
| 958 |
|
|
|
| 959 |
522
|
Ruebenwurz
|
if ($this->filename_comments) {
|
| 960 |
|
|
$str = "<!-- START FILE $filename -->\n$str<!-- END FILE $filename -->\n";
|
| 961 |
|
|
}
|
| 962 |
4
|
ryan
|
if ($this->debug & 4) {
|
| 963 |
|
|
printf("<b>loadfile:</b> loaded $filename into $varname<br>\n");
|
| 964 |
|
|
}
|
| 965 |
|
|
$this->set_var($varname, $str);
|
| 966 |
|
|
|
| 967 |
|
|
return true;
|
| 968 |
|
|
}
|
| 969 |
|
|
|
| 970 |
|
|
|
| 971 |
|
|
/******************************************************************************
|
| 972 |
|
|
* This function is called whenever an error occurs and will handle the error
|
| 973 |
|
|
* according to the policy defined in $this->halt_on_error. Additionally the
|
| 974 |
|
|
* error message will be saved in $this->last_error.
|
| 975 |
|
|
*
|
| 976 |
|
|
* Returns: always returns false.
|
| 977 |
|
|
*
|
| 978 |
|
|
* usage: halt(string $msg)
|
| 979 |
|
|
*
|
| 980 |
|
|
* @param $msg a string containing an error message
|
| 981 |
|
|
* @access private
|
| 982 |
|
|
* @return void
|
| 983 |
|
|
* @see $halt_on_error
|
| 984 |
|
|
*/
|
| 985 |
|
|
function halt($msg) {
|
| 986 |
|
|
$this->last_error = $msg;
|
| 987 |
|
|
|
| 988 |
|
|
if ($this->halt_on_error != "no") {
|
| 989 |
|
|
$this->haltmsg($msg);
|
| 990 |
|
|
}
|
| 991 |
|
|
|
| 992 |
|
|
if ($this->halt_on_error == "yes") {
|
| 993 |
|
|
die("<b>Halted.</b>");
|
| 994 |
|
|
}
|
| 995 |
|
|
|
| 996 |
|
|
return false;
|
| 997 |
|
|
}
|
| 998 |
|
|
|
| 999 |
|
|
|
| 1000 |
|
|
/******************************************************************************
|
| 1001 |
|
|
* This function prints an error message.
|
| 1002 |
|
|
* It can be overridden by your subclass of Template. It will be called with an
|
| 1003 |
|
|
* error message to display.
|
| 1004 |
|
|
*
|
| 1005 |
|
|
* usage: haltmsg(string $msg)
|
| 1006 |
|
|
*
|
| 1007 |
|
|
* @param $msg a string containing the error message to display
|
| 1008 |
|
|
* @access public
|
| 1009 |
|
|
* @return void
|
| 1010 |
|
|
* @see halt
|
| 1011 |
|
|
*/
|
| 1012 |
|
|
function haltmsg($msg) {
|
| 1013 |
|
|
printf("<b>Template Error:</b> %s<br>\n", $msg);
|
| 1014 |
|
|
}
|
| 1015 |
|
|
|
| 1016 |
|
|
}
|
| 1017 |
|
|
?>
|