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2 template features:

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- added a {html_head} smarty block - allow any template file to add content just before </head> tag (handy for plugins and allows to move more presentation logic to tpls); the content is usually <style> or <link> which must appear inside html <head> tag
- by config allow some language strings to be replaced during template compilation -> better performance. drawback: changes in the language file will not be propagated until template is recompiled.

git-svn-id: http://piwigo.org/svn/trunk@2334 68402e56-0260-453c-a942-63ccdbb3a9ee
This commit is contained in:
rvelices
2008-05-08 01:13:13 +00:00
parent 5dbad41e2e
commit a2087d46d2
4 changed files with 113 additions and 13 deletions
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88
include/template.class.php
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@@ -43,13 +43,15 @@ class Template {
// Hash of filenames for each template handle.
var $files = array();
// used by html_head smarty block to add content before </head>
var $html_head_elements = array();
function Template($root = ".", $theme= "")
{
global $conf;
$this->smarty = new Smarty;
$this->smarty->debugging = $conf['debug_template'];
//$this->smarty->force_compile = true;
if ( isset($conf['compiled_template_dir'] ) )
{
@@ -76,6 +78,11 @@ class Template {
$this->smarty->assign_by_ref( 'pwg', new PwgTemplateAdapter() );
$this->smarty->register_modifier( 'translate', array('Template', 'mod_translate') );
$this->smarty->register_modifier( 'explode', array('Template', 'mod_explode') );
$this->smarty->register_block('html_head', array(&$this, 'block_html_head') );
if ( $conf['compiled_template_cache_language'] )
{
$this->smarty->register_prefilter( array(&$this, 'prefilter_language') );
}
if ( !empty($theme) )
{
@@ -95,7 +102,7 @@ class Template {
$real_dir = realpath($dir);
$compile_id = crc32( $real_dir===false ? $dir : $real_dir);
$this->smarty->compile_id = sprintf('%08X', $compile_id );
$this->smarty->compile_id = base_convert($compile_id, 10, 36 );
}
/**
@@ -223,7 +230,21 @@ class Template {
$this->smarty->assign( 'ROOT_URL', get_root_url() );
$this->smarty->assign( 'TAG_INPUT_ENABLED',
((is_adviser()) ? 'disabled="disabled" onclick="return false;"' : ''));
global $conf, $lang_info;
if ( $conf['compiled_template_cache_language'] and isset($lang_info['code']) )
{
$save_compile_id = $this->smarty->compile_id;
$this->smarty->compile_id .= '.'.$lang_info['code'];
}
$v = $this->smarty->fetch($this->files[$handle], null, null, false);
if (isset ($save_compile_id) )
{
$this->smarty->compile_id = $save_compile_id;
}
if ($return)
{
return $v;
@@ -238,19 +259,31 @@ class Template {
function pparse($handle)
{
$this->parse($handle, false);
echo $this->output;
$this->output='';
$this->flush();
}
function flush()
{
if ( count($this->html_head_elements) )
{
$search = "\n</head>";
$pos = strpos( $this->output, $search );
if ($pos !== false)
{
$this->output = substr_replace( $this->output, "\n".implode( "\n", $this->html_head_elements ), $pos, 0 );
} //else maybe error or warning ?
$this->html_head_elements = array();
}
echo $this->output;
$this->output='';
}
/** flushes the output */
function p()
{
$start = get_moment();
echo $this->output;
$this->output='';
$this->flush();
if ($this->smarty->debugging)
{
@@ -283,6 +316,47 @@ class Template {
{
return explode($delimiter, $text);
}
/**
* This smarty "html_head" block allows to add content just before
* </head> element in the output after the head has been parsed. This is
* handy in order to respect strict standards when <style> and <link>
* html elements must appear in the <head> element
*/
function block_html_head($params, $content, &$smarty, &$repeat)
{
$content = trim($content);
if ( !empty($content) )
{ // second call
if ( empty($this->output) )
{//page header not parsed yet
$this->append('head_elements', $content);
}
else
{
$this->html_head_elements[] = $content;
}
}
}
/**
* Smarty prefilter to allow caching (whenever possible) language strings
* from templates.
*/
function prefilter_language($source, &$smarty)
{
global $lang;
$ldq = preg_quote($this->smarty->left_delimiter, '~');
$rdq = preg_quote($this->smarty->right_delimiter, '~');
$regex = "~$ldq *\'([^'$]+)\'\|@translate *$rdq~";
$source = preg_replace( $regex.'e', 'isset($lang[\'$1\']) ? $lang[\'$1\'] : \'$0\'', $source);
$regex = "~$ldq *\'([^'$]+)\'\|@translate\|~";
$source = preg_replace( $regex.'e', 'isset($lang[\'$1\']) ? \'{\'.var_export($lang[\'$1\'],true).\'|\' : \'$0\'', $source);
return $source;
}
}
/**