X-Git-Url: https://jasonwoof.com/gitweb/?a=blobdiff_plain;f=template.php;h=5d35ff7731aa1d095808d03fd33b3fa44789fd8c;hb=47d8b4705be324d466c0c4d12c5f808f0a02d09b;hp=b6025731b62a13d1d0a474bcdcba52b9501ca25a;hpb=812c501d8bc3d69ac9a8766ade468ccc2d14263a;p=wfpl.git

diff --git a/template.php b/template.php
index b602573..5d35ff7 100644
--- a/template.php
+++ b/template.php
@@ -37,9 +37,9 @@
 # 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
@@ -53,19 +53,18 @@ function template_file($filename, $data) {
 	return fill_template(parse_template_file($filename), $data);
 }
 
-function parse_template_file($filename) {
+function &parse_template_file($filename) {
 	return parse_template(file_get_contents($filename));
 }
 
-# We parse the template string into a tree of strings and sub-templates.  
+# We parse the template string into a tree of strings and sub-templates.
 # A template is a hash with a name string, a pieces array, and possibly 
 # an args array.
 
-function parse_template($string) {
+function &parse_template($string) {
 	$tem =& tem_push();
 	$tem['pieces'] = array();
-	# note: for some reason this captures '<!--' but not '-->'.
-	$matches = preg_split("/(<!--)?(~[^~]*~)(?(1)-->)/", $string, -1, PREG_SPLIT_DELIM_CAPTURE);
+	$matches = preg_split('/(<!--)?(~[^~]*~)(?(1)-->)/', preg_replace('/<!--(~[^~]*~)-->/', '$1', $string), -1, PREG_SPLIT_DELIM_CAPTURE | PREG_SPLIT_NO_EMPTY);
 	foreach($matches as $match) {
 		if($match == '~~') $match = '~';
 		if(substr($match,0,1) == '~' and strlen($match) > 2) {
@@ -85,13 +84,13 @@ function parse_template($string) {
 				array_pop($args);  # drop '}'
 				$cur = $tem['name'];
 				if($name && $name != $cur) {
-				   	die("Invalid template: tried to close '$name', but '$cur' is current.");
+					die("Invalid template: tried to close '$name', but '$cur' is current.");
 				}
 				$tem =& $tem['parent'];
 			} else {  # value slot
 				$tem['pieces'][] = array('name' => $name, 'args' => $args);
 			}
-		} elseif($match and $match != '<!--') {  # static string
+		} else {  # static string
 			$tem['pieces'][] = $match;
 		}
 	}
@@ -158,13 +157,15 @@ function &tem_push(&$stack = NULL) {
 
 # The middle form will be converted to the last form as we use it.
 
-function tem_data_as_rows($value) {
+function tem_data_as_rows($value, $key) {
 	if(is_array($value)) {
-		# numeric keys, is already array of arrays -- expand sub-template for each.
-		if(array_key_exists(0, $value)) return $value;
+		# numeric keys
+		if(array_key_exists(0, $value)) {
+			if(is_array($value[0])) return $value;  # already array of hashes.
+			else return columnize($value, $key);
 		# key/value pairs -- expand sub-template once.
-		else return array($value);
-	} elseif($value) {
+		} else return array($value);
+	} elseif($value || $value === 0 || $value === '0' || $value === '') {
 		# value -- expand sub-template once using only parent values
 		return array(array());
 	} else {
@@ -208,13 +209,17 @@ function &tem_row_data($tem, $context)
 
 	if(count($tem['args'])) {
 		$auto_func = "tem_auto_" . $tem['args'][0];
-		function_exists($auto_func)
-		   	or die("ERROR: template auto function '$auto_func' not found.<br>\n");
+		if (!function_exists($auto_func)) {
+			die("ERROR: template auto function '$auto_func' not found.<br>\n");
+		}
+		# NAMESPACIFY $auto_func
+	}
+	if ($auto_func) {
+		$value = $auto_func($scope['data'][$key], $key, $scope, $tem['args']);
 	}
-	if($auto_func) $value = $auto_func($scope['data'][$key], $key, $scope);
 	else $value = $scope['data'][$key];
 
-	$rows = tem_data_as_rows($value);
+	$rows = tem_data_as_rows($value, $key);
 	if(is_array($value)) $scope['data'][$key] = $rows;
 
 	return $rows;
@@ -227,45 +232,64 @@ function tem_encoded_data($tag, $context)
 	$value = tem_get_data($key, $context);
 	foreach($tag['args'] as $encoding) {
 		$func = "enc_$encoding";
-		if(function_exists($func)) $value = $func($value, $key);
-		else die("ERROR: encoder function '$func' not found.<br>\n");
+		if (function_exists($func)) {
+			# NAMESPACIFY $func
+			$value = $func($value, $key);
+		} else {
+			die("ERROR: encoder function '$func' not found.<br>\n");
+		}
 	}
 	return $value;
 }
 
 
-function is_sub_template($piece) {
+function is_sub_template(&$piece) {
 	return is_array($piece) and $piece['pieces'];
 }
 
+function is_value_slot(&$piece) {
+	return is_array($piece) and !$piece['pieces'];
+}
+
 # Return a hash containing the top-level sub-templates of tem.
 function top_sub_templates($tem, $is_sub = 'is_sub_template') {
 	function_exists($is_sub) or die("no such function '$is_sub'.");
 	$subs = array();
 	foreach($tem['pieces'] as $piece) {
 		if($is_sub($piece)) {
-		   	$subs[$piece['name']] = $piece;
+			$subs[$piece['name']] = $piece;
 		}
 	}
 	return $subs;
 }
 
-# Replace top-level values in $main with top-level templates from $tem.
-function merge_templates($main, $tem) {
-	$out = array('name' => $main['name'], 'pieces' => array());
-
-	$subs = top_sub_templates($tem);
-
-	foreach($main['pieces'] as $piece) {
-		$sub = $subs[$piece['name']];
-		if(is_array($piece) and !$piece['pieces'] and $sub and $sub['args'][0] != 'hide') {
-			$piece = $subs[$piece['name']];
+# merge $subs (sub_templates) into variables in $main (template)
+function merge_sub_templates(&$main, &$subs) {
+	foreach($main['pieces'] as &$piece) {
+		if(is_array($piece)) { # not just text
+			if($piece['pieces']) {
+				# a sub-template in main
+				merge_sub_templates($piece, $subs);
+			} else {
+				# a value-slot in main
+				$sub = $subs[$piece['name']];
+				if($sub and $sub['args'][0] != 'hide') {
+					$piece = $subs[$piece['name']];
+					$piece['parent'] =& $main;
+				}
+			}
 		}
-		$out['pieces'][] = $piece;
 	}
 	return $out;
 }
 
+# Replace values in $main with top-level templates from $tem.
+function merge_templates(&$main, &$tem) {
+	$subs = top_sub_templates($tem);
+
+	merge_sub_templates($main, $subs);
+}
+
 
 
 # tem_auto functions
@@ -286,29 +310,86 @@ function merge_templates($main, $tem) {
 function tem_auto_sep(&$value, $key, $context) {
 	$rows =& $context['parent']['parent'];
 	if($rows['cur'] != count($rows['rows'])-1)  # last row?
-	   	return $value = true;  # show once
+		return true;  # show once
+}
+
+# auto-show once, only when this is the first row of the parent
+function tem_auto_last(&$value, $key, $context) {
+	$rows =& $context['parent']['parent'];
+	if($rows['cur'] == count($rows['rows'])-1)  # last row?
+		return true;  # show once
 }
 
-# 'show' sections will be shown unless the corresponding data value
-# is false (only false, not 0 or '' or array()).
+# auto-show once, only when this is the last row of the parent
+function tem_auto_first(&$value, $key, $context) {
+	$rows =& $context['parent']['parent'];
+	if($rows['cur'] == 0)  # first row?
+		return true;  # show once
+}
 
+# 'show' sections will be shown unless the corresponding data
+# value === false
 function tem_auto_show(&$value) {
-	if($value !== false) $value = array(array());
+	if($value === null) return true;
 	return $value;
 }
 
+# 'empty' sections will be shown only if the corresponding data value is the
+# empty string
+function tem_auto_empty(&$value) {
+	if($value === '') return true;
+	return null;
+}
+
+# 'nonempty' sections will not be shown if the corresponding data
+# value is the empty string
+function tem_auto_nonempty(&$value) {
+	if($value === '') return null;
+	return $value;
+}
+
+# 'unset' sections will not be shown if the corresponding data
+# value is not set (opposite of default)
+function tem_auto_unset(&$value) {
+	if($value === null) {
+		return '';
+	} else {
+		return null;
+	}
+}
+
 # 'evenodd' sections are given an 'evenodd' attribute whose value
 # alternates between 'even' and 'odd'.
-
 function tem_auto_evenodd(&$values) {
 	$even = true;
-	foreach($values as &$value) {
+	if($values) foreach($values as &$value) {
 		$value['evenodd'] = $even ? 'even' : 'odd';
 		$even = !$even;
 	}
 	return $values;
 }
 
+# 'once' sections are shown exactly once if the value is set (and not at all
+# otherwise.) This is useful when an array value would otherwise cause the
+# section to be displayed multiple times.
+function tem_auto_once(&$value) {
+	if($value === null) return null;
+	return true;
+}
+
+function tem_auto_once_if(&$value) {
+	if($value) return true;
+	return null;
+}
+
+# 'once' sections are shown exactly once if php evaluates the value to false
+# (and not at all otherwise.) This is useful when an array value would
+# otherwise cause the section to be displayed multiple times.
+function tem_auto_once_else(&$value) {
+	if($value) return null;
+	return true;;
+}
+
 
 
 
@@ -359,12 +440,18 @@ class tem {
 	function tem() {
 		$this->template = array('pieces' => array());
 		$this->data = array();
-   	}
+	}
 	
-	function set($key, $value) {
+	function set($key, $value = true) {
 		$this->data[$key] = $value;
 	}
 
+	function sets($hash) {
+		foreach($hash as $key => $value) {
+			$this->set($key, $value);
+		}
+	}
+
 	function append($key, $value) {
 		$this->data[$key] .= $value;
 	}
@@ -396,11 +483,11 @@ class tem {
 	}
 
 	function load_str($str) {
-		$this->template = parse_template($str);
+		$this->template =& parse_template($str);
 	}
 
 	function load($filename) {
-		$this->template = parse_template_file($filename);
+		$this->template =& parse_template_file($filename);
 	}
 
 	function run($tem = false) {
@@ -429,7 +516,14 @@ class tem {
 
 		# merge the data arrays and template trees (new style)
 		$this->data = array_merge($this->data, $tem->data);
-		$this->template = merge_templates($this->template, $tem->template);
+		merge_templates($this->template, $tem->template);
+	}
+
+	# see merge() above
+	function merge_file($filename) {
+		$other_tem = new tem();
+		$other_tem->load($filename);
+		$this->merge($other_tem);
 	}
 
 	function top_sub_names($is_sub = 'is_sub_template') {
@@ -467,11 +561,16 @@ function tem_prepend($key, $value) {
 	$GLOBALS['wfpl_template']->prepend($key, $value);
 }
 
-function tem_set($key, $value) {
+function tem_set($key, $value = true) {
 	tem_init();
 	$GLOBALS['wfpl_template']->set($key, $value);
 }
 
+function tem_sets($hash) {
+	tem_init();
+	$GLOBALS['wfpl_template']->sets($hash);
+}
+
 function tem_get($key) {
 	tem_init();
 	return $GLOBALS['wfpl_template']->get($key);
@@ -497,6 +596,16 @@ function tem_load($filename) {
 	$GLOBALS['wfpl_template']->load($filename);
 }
 
+function tem_merge($tem) {
+	tem_init();
+	$GLOBALS['wfpl_template']->merge($tem);
+}
+
+function tem_merge_file($filename) {
+	tem_init();
+	$GLOBALS['wfpl_template']->merge_file($filename);
+}
+
 function tem_output($filename = false) {
 	tem_init();
 	$GLOBALS['wfpl_template']->output($filename);