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<?php
namespace kch42\ste;
/**
* The default {@see StorageAccess} implementation for loading / saving templates into a directory structure.
*/
class FilesystemStorageAccess implements StorageAccess
{
/** @var string */
protected $sourcedir;
/** @var string */
protected $transcompileddir;
/**
* @param string $src - The directory with the sources (Writing permissions are not mandatory, because STE does not save template sources).
* @param string $transc - The directory with the compiled templates (the PHP instance / the HTTP Server needs writing permissions to this directory).
*/
public function __construct(string $src, string $transc)
{
$this->sourcedir = $src;
$this->transcompileddir = $transc;
}
public function load(string $tpl, string &$mode)
{
$src_fn = $this->sourcedir . "/" . $tpl;
$transc_fn = $this->transcompileddir . "/" . $tpl . ".php";
if ($mode == StorageAccess::MODE_SOURCE) {
$content = @file_get_contents($src_fn);
if ($content === false) {
throw new CantLoadTemplate("Template not found.");
}
return $content;
}
$src_stat = @stat($src_fn);
$transc_stat = @stat($transc_fn);
if ($src_stat === false && $transc_stat === false) {
throw new CantLoadTemplate("Template not found.");
} elseif ($transc_stat === false) {
$mode = StorageAccess::MODE_SOURCE;
return file_get_contents($src_fn);
} elseif ($src_stat === false) {
include($transc_fn);
if (!isset($transcompile_fx)) {
throw new CantLoadTemplate("Compiled template file $transc_fn does not set \$transcompile_fx");
}
return $transcompile_fx;
} else {
if ($src_stat["mtime"] > $transc_stat["mtime"]) {
$mode = StorageAccess::MODE_SOURCE;
return file_get_contents($src_fn);
} else {
include($transc_fn);
if (!isset($transcompile_fx)) {
throw new CantLoadTemplate("Compiled template file $transc_fn does not set \$transcompile_fx");
}
return $transcompile_fx;
}
}
}
public function save(string $tpl, string $data, $mode): void
{
$fn = (($mode == StorageAccess::MODE_SOURCE) ? $this->sourcedir : $this->transcompileddir) . "/" . $tpl . (($mode == StorageAccess::MODE_TRANSCOMPILED) ? ".php" : "");
@mkdir(dirname($fn), 0777, true);
if (file_put_contents($fn, "<?php\n\$transcompile_fx = $data;") === false) {
throw new CantSaveTemplate("Unable to save template.");
}
}
}
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