/**
* Converts a Phorum template into PHP code and writes the resulting code
* to disk. This is the only call from templates.php that is called from
* outside this file. All other functions are used internally for the
* template compiling process.
*
* @param $page - The template page name (as used for phorum_get_template())
* @param $infile - The template input file to process
* @param $outfile - The PHP file to write the resulting code to.
*/
function phorum_import_template($page, $infile, $outfile)
{
// Template pass 1:
// Recursively process all template {include ...} statements, to
// construct a single template data block.
list($template, $dependencies) = phorum_import_template_pass1($infile);
// Template pass 2:
// Translate all other template statements into PHP code.
$template = phorum_import_template_pass2($template);
// Write the compiled template to disk.
//
// For storing the compiled template, we use two files. The first one
// has some code for checking if one of the dependent files has been
// updated and for rebuilding the template if this is the case.
// This one loads the second file, which is the compiled template itself.
//
// This two-stage loading is needed to make sure that syntax
// errors in a template file won't break the depancy checking process.
// If both were in the same file, the complete file would not be run
// at all and the user would have to clean out the template cache to
// reload the template once it was fixed. This way user intervention
// is never needed.
$stage1file = $outfile;
$stage2file = $outfile . "-stage2";
$qstage1file = addslashes($stage1file);
$qstage2file = addslashes($stage2file);
// Output file for stage 1. This file contains code to check the file
// dependencies. If one of the files that the template depends on is
// changed, the template has to be rebuilt. Also rebuild in case the
// second stage compiled template is missing.
$checks = array();
$checks[] = "!file_exists(\"{$qstage2file}\")";
foreach ($dependencies as $file => $mtime) {
$qfile = addslashes($file);
$checks[] = "@filemtime(\"{$qfile}\") != {$mtime}";
}
$qpage = addslashes($page);
$stage1 = "<?php\n if (" . implode(" || ", $checks) . ") {\n @unlink (\"{$qstage1file}\");\n include(phorum_get_template(\"{$qpage}\"));\n return;\n } else {\n include(\"{$qstage2file}\");\n }\n ?>";
phorum_write_file($stage1file, $stage1);
// Output file for stage 2. This file contains the compiled template.
phorum_write_file($stage2file, $template);
}
}
if ($r['where'] == 'before') {
$before .= $before == '' ? $add : "\n\n{$add}";
} else {
$after .= "\n\n{$add}";
}
}
$content = "{$before}\n{$base}\n{$after}";
// Compress the CSS code.
if (PHORUM_COMPRESS_CSS) {
$content = preg_replace('!/\\*[^*]*\\*+([^/][^*]*\\*+)*/!', '', $content);
$content = str_replace(array("\r\n", "\r", "\n", "\t", ' ', ' ', ' '), '', $content);
}
if (!empty($PHORUM['cache_css'])) {
require_once './include/templates.php';
phorum_write_file($cache_file, $content);
}
// Send the CSS to the browser.
header("Content-Type: text/css");
print $content;
// Exit here explicitly for not giving back control to portable and
// embedded Phorum setups.
exit(0);
}
// Find the modification time for the cache file.
$last_modified = @filemtime($cache_file);
// Check if a If-Modified-Since header is in the request. If yes, then
// check if the CSS code has changed, based on the filemtime() data from
// above. If nothing changed, then we can return a 304 header, to tell the
// browser to use the cached data.
if (!empty($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {