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téléchargement des images d'un article

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This commit is contained in:
nicosomb 2013-04-17 15:11:57 +02:00
parent 4456315b21
commit 1c182b6c9d
5 changed files with 136 additions and 18 deletions
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138
inc/functions.php
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@ -16,8 +16,9 @@ function get_poche_url()
}
// function define to retrieve url content
function get_external_file($url, $timeout)
function get_external_file($url)
{
$timeout = 15;
// spoofing FireFox 18.0
$useragent="Mozilla/5.0 (Windows NT 5.1; rv:18.0) Gecko/20100101 Firefox/18.0";
@ -45,10 +46,7 @@ function get_external_file($url, $timeout)
} else {
// create http context and add timeout and user-agent
$context = stream_context_create(array('http'=>array('timeout' => $timeout, // Timeout : time until we stop waiting for the response.
'header'=> "User-Agent: ".$useragent, // spoot Mozilla Firefox
'follow_location' => true
)));
$context = stream_context_create(array('http'=>array('timeout' => $timeout,'header'=> "User-Agent: ".$useragent,/*spoot Mozilla Firefox*/'follow_location' => true)));
// only download page lesser than 4MB
$data = @file_get_contents($url, false, $context, -1, 4000000); // We download at most 4 MB from source.
@ -90,7 +88,7 @@ function get_external_file($url, $timeout)
/**
* Préparation de l'URL avec récupération du contenu avant insertion en base
*/
function prepare_url($url)
function prepare_url($url, $id)
{
$parametres = array();
$url = html_entity_decode(trim($url));
@ -112,19 +110,127 @@ function prepare_url($url)
$r->convertLinksToFootnotes = TRUE;
if($r->init())
{
$title = $r->articleTitle->innerHTML;
$content = $r->articleContent->innerHTML;
$parametres['title'] = $r->articleTitle->innerHTML;
$parametres['content'] = filtre_picture($content, $url, $id);
return $parametres;
}
}
$parametres['title'] = $title;
$parametres['content'] = $r->articleContent->innerHTML;
logm('error during url preparation');
return FALSE;
}
return $parametres;
/**
* On modifie les URLS des images dans le corps de l'article
*/
function filtre_picture($content, $url, $id)
{
$matches = array();
preg_match_all('#<\s*(img)[^>]+src="([^"]*)"[^>]*>#Si', $content, $matches, PREG_SET_ORDER);
foreach($matches as $i => $link)
{
$link[1] = trim($link[1]);
if (!preg_match('#^(([a-z]+://)|(\#))#', $link[1]) )
{
$absolute_path = get_absolute_link($link[2],$url);
$filename = basename(parse_url($absolute_path, PHP_URL_PATH));
$directory = create_assets_directory($id);
$fullpath = $directory . '/' . $filename;
download_pictures($absolute_path, $fullpath);
$content = str_replace($matches[$i][2], $fullpath, $content);
}
}
return $content;
}
/**
* Retourne le lien absolu
*/
function get_absolute_link($relative_link, $url)
{
/* return if already absolute URL */
if (parse_url($relative_link, PHP_URL_SCHEME) != '') return $relative_link;
/* queries and anchors */
if ($relative_link[0]=='#' || $relative_link[0]=='?') return $url . $relative_link;
/* parse base URL and convert to local variables:
$scheme, $host, $path */
extract(parse_url($url));
/* remove non-directory element from path */
$path = preg_replace('#/[^/]*$#', '', $path);
/* destroy path if relative url points to root */
if ($relative_link[0] == '/') $path = '';
/* dirty absolute URL */
$abs = $host . $path . '/' . $relative_link;
/* replace '//' or '/./' or '/foo/../' with '/' */
$re = array('#(/\.?/)#', '#/(?!\.\.)[^/]+/\.\./#');
for($n=1; $n>0; $abs=preg_replace($re, '/', $abs, -1, $n)) {}
/* absolute URL is ready! */
return $scheme.'://'.$abs;
}
/**
* Téléchargement des images
*/
function download_pictures($absolute_path, $fullpath)
{
$rawdata = get_external_file($absolute_path);
if(file_exists($fullpath)) {
unlink($fullpath);
}
$fp = fopen($fullpath, 'x');
fwrite($fp, $rawdata);
fclose($fp);
}
/**
* Crée un répertoire de médias pour l'article
*/
function create_assets_directory($id)
{
$assets_path = ABS_PATH;
if(!is_dir($assets_path)) {
mkdir($assets_path, 0705);
}
$article_directory = $assets_path . $id;
if(!is_dir($article_directory)) {
mkdir($article_directory, 0705);
}
return $article_directory;
}
/**
* Suppression du répertoire d'images
*/
function remove_directory($directory)
{
if(is_dir($directory)) {
$files = array_diff(scandir($directory), array('.','..'));
foreach ($files as $file) {
// FIXME c'est quoi delTree ??
(is_dir("$directory/$file")) ? delTree("$directory/$file") : unlink("$directory/$file");
}
return rmdir($directory);
}
}
/**
* Appel d'une action (mark as fav, archive, delete)
*/
function action_to_do($action, $id, $url, $token)
{
global $db;
@ -135,13 +241,19 @@ function action_to_do($action, $id, $url, $token)
if ($url == '')
continue;
$parametres_url = prepare_url($url);
$sql_action = 'INSERT INTO entries ( url, title, content ) VALUES (?, ?, ?)';
$params_action = array($url, $parametres_url['title'], $parametres_url['content']);
$req = $db->getHandle()->query("SELECT id FROM entries ORDER BY id DESC");
$id = $req->fetchColumn()+1;
if($parametres_url = prepare_url($url, $id)) {
$sql_action = 'INSERT INTO entries ( id, url, title, content ) VALUES (?,?, ?, ?)';
$params_action = array($id,$url, $parametres_url['title'], $parametres_url['content']);
}
logm('add link ' . $url);
break;
case 'delete':
if (verif_token($token)) {
remove_directory(ABS_PATH . $id);
$sql_action = "DELETE FROM entries WHERE id=?";
$params_action = array($id);
logm('delete link #' . $id);