X-Git-Url: https://jasonwoof.com/gitweb/?p=wfpl.git;a=blobdiff_plain;f=template.php;h=077aa8daf4547b33693af1df1f008811e41862db;hp=8e0028bfa4e9937d96c91f3568e404a9289cffc1;hb=HEAD;hpb=13cee08524dc328f40f089631ef9efa1fc13e251

diff --git a/template.php b/template.php
index 8e0028b..077aa8d 100644
--- a/template.php
+++ b/template.php
@@ -1,19 +1,9 @@
 <?php
 
-#  Copyright (C) 2008,2009 Joshua Grams <josh@qualdan.com>
-#
-#  This program is free software: you can redistribute it and/or modify
-#  it under the terms of the GNU General Public License as published by
-#  the Free Software Foundation, either version 3 of the License, or
-#  (at your option) any later version.
-#  
-#  This program 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 General Public License for more details.
-#  
-#  You should have received a copy of the GNU General Public License
-#  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+# This program is in the public domain within the United States. Additionally,
+# we waive copyright and related rights in the work worldwide through the CC0
+# 1.0 Universal public domain dedication, which can be found at
+# http://creativecommons.org/publicdomain/zero/1.0/
 
 
 # This is a simple template-handling system.  You pass it a big data 
@@ -37,9 +27,9 @@
 # tem_auto_* function to munge the data, automating certain common use 
 # cases.  See the comments on the tem_auto functions for more details.
 
-require_once('code/wfpl/encode.php');
-require_once('code/wfpl/file.php');
-require_once('code/wfpl/misc.php');
+require_once(__DIR__.'/'.'encode.php');
+require_once(__DIR__.'/'.'file.php');
+require_once(__DIR__.'/'.'misc.php');
 
 
 # Top-Level Functions
@@ -73,14 +63,14 @@ function &parse_template($string) {
 			if(count($args) == 1 and $args[0] == '}') $name = '';
 			else $name = array_shift($args);
 
-			if(last($args) == '{') {  # open block
+			if(count($args) && $args[count($args)-1] == '{') {  # open block
 				array_pop($args);  # drop '{'
 				$tem =& tem_push($tem);              # create a new sub-template
 				$tem['parent']['pieces'][] =& $tem;  # as a piece of the parent
 				$tem['name'] = $name;
 				$tem['pieces'] = array();
 				$tem['args'] = $args;
-			} elseif(last($args) == '}') {  # close block
+			} elseif(count($args) && $args[count($args)-1] == '}') {  # close block
 				array_pop($args);  # drop '}'
 				$cur = $tem['name'];
 				if($name && $name != $cur) {
@@ -100,15 +90,16 @@ function &parse_template($string) {
 function fill_template($template, &$data, &$context = NULL) {
 	$context =& tem_push($context);
 	$context['data'] =& $data;
+	$output = '';
 
 	foreach($template['pieces'] as $tem) {
 		if(is_string($tem)) $output .= $tem;
-		elseif($tem['pieces']) {  # sub-template
+		elseif(isset($tem['pieces'])) {  # sub-template
 			$rows =& tem_row_data($tem, $context);
 			$context['rows'] =& $rows;
 			foreach($rows as $key => &$row) {
 				$context['cur'] = $key;
-				$output .= fill_template($tem, $row, $context);
+				$output .= tem_apply_encodings($tem['name'], fill_template($tem, $row, $context), $tem['args']);
 			}
 		} else {  # variable
 			$output .= tem_encoded_data($tem, $context);
@@ -185,19 +176,19 @@ function tem_data_scope($key, $context) {
 		if(array_key_exists($key, $scope['data'])) {
 			return $scope;
 		}
-	} while($scope = $scope['parent']);
+	} while($scope = isset($scope['parent']) ? $scope['parent'] : null);
 
 	# not found; return empty scope.
 	$refs[] = array();
 	$ret = array();
 	$ret['parent'] =& $context;
-	$ret['data'] =& last($refs);
+	$ret['data'] =& $refs[count($refs) - 1];
 	return $ret;
 }
 
 function tem_get_data($key, $context) {
 	$scope = tem_data_scope($key, $context);
-	if($scope) return $scope['data'][$key];
+	if($scope) return isset($scope['data'][$key]) ? $scope['data'][$key] : null;
 }
 
 # Return the value for a tag as a set of rows to fill a sub-template.
@@ -206,49 +197,60 @@ function &tem_row_data($tem, $context)
 {
 	$key = $tem['name'];
 	$scope = tem_data_scope($key, $context);
+	$auto_func = false;
 
 	if(count($tem['args'])) {
 		$auto_func = "tem_auto_" . $tem['args'][0];
 		if (!function_exists($auto_func)) {
-			die("ERROR: template auto function '$auto_func' not found.<br>\n");
+			if (function_exists("enc_" . $tem['args'][0])) {
+				$auto_func = false;
+			} else {
+				die("ERROR: template auto function '$auto_func' not found.<br>\n");
+			}
 		}
 		# NAMESPACIFY $auto_func
 	}
+	$value = isset($scope['data'][$key]) ? $scope['data'][$key] : null;
 	if ($auto_func) {
-		$value = $auto_func($scope['data'][$key], $key, $scope, $tem['args']);
+		$value = $auto_func($value, $key, $scope, $tem['args']);
 	}
-	else $value = $scope['data'][$key];
 
 	$rows = tem_data_as_rows($value, $key);
-	if(is_array($value)) $scope['data'][$key] = $rows;
+	if(is_array($value)) {
+		$scope['data'][$key] = $rows;
+	}
 
 	return $rows;
 }
 
-# Return the value for a tag as an encoded string.
-function tem_encoded_data($tag, $context)
-{
-	$key = $tag['name'];
-	$value = tem_get_data($key, $context);
-	foreach($tag['args'] as $encoding) {
+function tem_apply_encodings ($key, $value, $encodings) {
+	if ($encodings) foreach($encodings as $encoding) {
 		$func = "enc_$encoding";
 		if (function_exists($func)) {
 			# NAMESPACIFY $func
 			$value = $func($value, $key);
-		} else {
+		} elseif (!function_exists("tem_auto_$encoding")) {
 			die("ERROR: encoder function '$func' not found.<br>\n");
 		}
 	}
 	return $value;
 }
 
+# Return the value for a tag as an encoded string.
+function tem_encoded_data($tag, $context)
+{
+	$key = $tag['name'];
+	$value = tem_get_data($key, $context);
+	return tem_apply_encodings($key, $value, $tag['args']);
+}
+
 
 function is_sub_template(&$piece) {
-	return is_array($piece) and $piece['pieces'];
+	return is_array($piece) && isset($piece['pieces']);
 }
 
 function is_value_slot(&$piece) {
-	return is_array($piece) and !$piece['pieces'];
+	return is_array($piece) && !isset($piece['pieces']);
 }
 
 # Return a hash containing the top-level sub-templates of tem.
@@ -267,20 +269,20 @@ function top_sub_templates($tem, $is_sub = 'is_sub_template') {
 function merge_sub_templates(&$main, &$subs) {
 	foreach($main['pieces'] as &$piece) {
 		if(is_array($piece)) { # not just text
-			if($piece['pieces']) {
+			if(isset($piece['pieces']) && $piece['pieces']) {
 				# a sub-template in main
 				merge_sub_templates($piece, $subs);
 			} else {
 				# a value-slot in main
-				$sub = $subs[$piece['name']];
-				if($sub and $sub['args'][0] != 'hide') {
+				$sub = isset($subs[$piece['name']]) ? $subs[$piece['name']] : null;
+				$arg0 = isset($sub['args'][0]) ? $sub['args'][0] : null;
+				if($sub && $arg0 != 'hide') {
 					$piece = $subs[$piece['name']];
 					$piece['parent'] =& $main;
 				}
 			}
 		}
 	}
-	return $out;
 }
 
 # Replace values in $main with top-level templates from $tem.
@@ -398,7 +400,7 @@ function tem_auto_once_else(&$value) {
 # ----------------------
 
 function is_shown($piece) {
-	return $piece['args'][0] == 'hide';
+	return isset($piece['args'][0]) && $piece['args'][0] == 'hide';
 }
 
 function is_shown_sub_template($piece) {
@@ -430,7 +432,8 @@ function &tem_is_old_sub($name, &$template) {
 			if($tem) return $tem;
 		}
 	}
-	return false;
+	$false = false;
+	return $false;
 }
 
 class tem {
@@ -453,6 +456,9 @@ class tem {
 	}
 
 	function append($key, $value) {
+		if (!isset($this->data[$key])) {
+			$this->data[$key] = '';
+		}
 		$this->data[$key] .= $value;
 	}
 
@@ -465,12 +471,19 @@ class tem {
 	}
 
 	function get($key) {
-		return $this->data[$key];
+		if (isset($this->data[$key])) {
+			return $this->data[$key];
+		} else {
+			return;
+		}
 	}
 
 	function show($name) {
 		$tem = tem_is_old_sub($name, $this->template);
 		if($tem) {
+			if (!isset($this->data[$name])) {
+				$this->data[$name] = '';
+			}
 			$this->data[$name] .= fill_template($tem, $this->data);
 		}
 	}
@@ -546,7 +559,7 @@ class tem {
 }
 
 function tem_init() {
-	if(!$GLOBALS['wfpl_template']) {
+	if(!isset($GLOBALS['wfpl_template']) || !$GLOBALS['wfpl_template']) {
 		$GLOBALS['wfpl_template'] = new tem();
 	}
 }
@@ -622,7 +635,7 @@ function tem_top_sub_names() {
 }
 
 function tem_load_new($filename) {
-	$old = $GLOBALS['wfpl_template'];
+	$old = isset($GLOBALS['wfpl_template']) ? $GLOBALS['wfpl_template'] : null;
 	$GLOBALS['wfpl_template'] = new tem();
 	$GLOBALS['wfpl_template']->load($filename);
 	return $old;
@@ -632,5 +645,3 @@ function tem_load_new($filename) {
 function tem_sub($name) {
 	tem_show($name);
 }
-
-?>