#
# This file is part of wfpl.
#
-# wfpl 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 2, or (at your option)
+# wfpl 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.
#
-# wfpl 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.
+# wfpl 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 General Public License
-# along with wfpl; see the file COPYING. If not, write to the
-# Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
-# MA 02111-1307, USA.
+# You should have received a copy of the GNU Lesser General Public License
+# along with wfpl; if not, write to the Free Software Foundation, Inc., 51
+# Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
# This file contains generally useful template handling code. It is wrapped in
# tem_output('filename.html') to output the page. A more complex example
# including the use of sub-templates can be found in tem_test.php
+# FIXME: sub-sub templates need to be cleared when the sub template containing
+# them is run
+
require_once('code/wfpl/encode.php');
+require_once('code/wfpl/misc.php'); # to get read_whole_file()
class tem {
var $keyval; # an array containing key/value pairs
- var $filename; # template filename (sometimes unset)
+ var $filename; # template filename (sometimes not set)
var $template; # contents of template
var $sub_templates; # tag-name/template-string pairs
+ var $sub_subs; # key: sub-template name value: array of names of the sub-templates of this one
# initialize variables
function tem() {
- $this->keyval = array('' => '~');
+ $this->keyval = array('' => '~'); # so that ~~ in the template creates a single ~
$this->sub_templates = array();
}
$this->keyval[$key] = $value;
}
+ # clear a value. Functionally equivalent to set($key, '') but cleaner and more efficient
+ function clear($key) {
+ unset($this->keyval[$key]);
+ }
+
# grab a value you stuck in earlier with set()
function get($key) {
return $this->keyval[$key];
# this can be used.
function sub($sub_template_name) {
$this->keyval[$sub_template_name] .= template_run($this->sub_templates[$sub_template_name], $this->keyval);
+
+ # after running a sub-template, clear its sub-templates
+ if(isset($this->sub_subs[$sub_template_name])) {
+ foreach($this->sub_subs[$sub_template_name] as $sub_sub) {
+ $this->clear($sub_sub);
+ }
+ }
}
# this is used by tem::load() and should be otherwise useless
- function _load(&$in, &$out) {
+ function _load(&$in, &$out, &$parents, &$parent) {
while($in) {
# scan for one of: 1) the begining of a sub-template 2) the end of this one 3) the end of the file
$n = strpos($in, '<!--~');
return;
}
+ # move everything up to (but not including) <!-- to the output
$out .= substr($in, 0, $n);
$in = substr($in, $n);
- #we found something.
- #is it an end tag?
+ # we found something.
+ # is it an end tag?
if(strcmp('<!--~end~-->', substr($in, 0, 12)) == 0) {
$in = substr($in, 12);
+ $parent = array_pop($parents);
return;
}
$matches = array();
# this limits sub_template names to 50 chars
- if(ereg('<!--~([^~]*) start~-->', substr($in, 0, 65), $matches)) {
+ if(ereg('^<!--~([^~]*) start~-->', substr($in, 0, 65), $matches)) {
list($start_tag, $tag_name) = $matches;
+
+ # keep track of the tree
+ if(!isset($this->sub_subs[$parent])) {
+ $this->sub_subs[$parent] = array();
+ }
+ array_push($this->sub_subs[$parent], $tag_name);
+ array_push($parents, $parent);
+ $parent = $tag_name;
+
$out .= '~' . $tag_name . '~';
$in = substr($in, strlen($start_tag));
$this->sub_templates[$tag_name] = '';
- $this->_load($in, $this->sub_templates[$tag_name]);
+ $this->_load($in, $this->sub_templates[$tag_name], $parents, $parent);
} else {
# it's not a start tag or end tag, so let's pass it through:
$out .= substr($in, 0, 5);
$this->filename = $filename;
$tmp = read_whole_file($filename);
$this->template = '';
- $this->_load($tmp, $this->template);
+ $parents = array('top_level_subs' => array());
+ $parent = 'top_level_subs';
+ $this->_load($tmp, $this->template, $parents, $parent);
}
# Run the template. Pass a filename, or a string, unless you've already
function output($templ = false) {
print($this->run($templ));
}
+
+ # return the contents of the top-level sub-templates
+ #
+ # this does not run the sub-templates, so if you've not called tem_sub() on them, they will be blank.
+ #
+ # Return a hash.
+ # keys: name of top level sub-template.
+ # values: contents of said sub-template.
+ function top_subs() {
+ $ret = array();
+ if(isset($this->sub_subs['top_level_subs'])) {
+ foreach($this->sub_subs['top_level_subs'] as $name) {
+ $ret[$name] = $this->get($name);
+ }
+ }
+ return $ret;
+ }
}
# Below are functions so you can use the above class without allocating or
-function read_whole_file($name) {
- $fd = fopen($name, 'r');
- if($fd === false) {
- die("Failed to read file: '$name'");
- }
- $temp = fread($fd, filesize($name));
- fclose($fd);
- return $temp;
-}
-
# this is used in template_run() and should be of no other use
function template_filler($matches) {
list($tag, $enc) = explode('.', $matches[1], 2);
$value = $GLOBALS['wfpl_template_keyval'][$tag];
if($enc) {
- $enc = "enc_$enc";
- if(function_exists($enc)) {
- $value = $enc($value);
- } else {
- print "ERROR: encoder function '$enc' not found.<br>\n";
- exit(1);
+ $encs = explode('.', $enc);
+ foreach($encs as $enc) {
+ $enc = "enc_$enc";
+ if(function_exists($enc)) {
+ $value = $enc($value);
+ } else {
+ print "ERROR: encoder function '$enc' not found.<br>\n";
+ exit(1);
+ }
}
}
return $value;
return preg_replace_callback(array('|<!--~([^~]*)~-->|', '|~([^~]*)~|', '|<span class="template">([^<]*)</span>|', '|<p class="template">([^<]*)</p>|'), 'template_filler', $template);
}
+function tem_top_subs() {
+ tem_init();
+ return $GLOBALS['wfpl_template']->top_subs();
+}
?>
Got questions, comments, patches, etc.? Contact Jason Woofenden