Current File : /home/tjamichg/cursos.tjamich.gob.mx/main/cron/lang/langstats.class.php
<?php
/* For licensing terms, see /license.txt */
/**
* This class takes the creation and querying of an SQLite DB in charge. The
* goal of this DB is to get stats on the usage of language vars for a common
* user.
*
* @package chamilo.cron.lang
*/
/**
* This class takes the creation and querying of an SQLite DB in charge. The
* goal of this DB is to get stats on the usage of language vars for a common
* user. This class requires the SQLite extension of PHP to be installed. The
* check for the availability of sqlite_open() should be made before calling
* the constructor (preferably).
*/
class langstats
{
public $db; //database connector
public $error; //stored errors
public $db_type = 'sqlite';
public function __construct($file = '')
{
switch ($this->db_type) {
case 'sqlite':
if (!class_exists('SQLite3')) {
$this->error = 'SQLiteNotAvailable';
return false; //cannot use if sqlite not installed
}
if (empty($file)) {
$file = api_get_path(SYS_ARCHIVE_PATH).'/langstasdb';
}
if (is_file($file) && is_writeable($file)) {
$this->db = new SQLite3($file, SQLITE3_OPEN_READWRITE);
} else {
try {
$this->db = new SQLite3($file);
} catch (Exception $e) {
$this->error = 'DatabaseCreateError';
error_log('Exception: '.$e->getMessage());
return false;
}
$err = $this->db->exec(
'CREATE TABLE lang_freq ('
.' id integer PRIMARY KEY AUTOINCREMENT, ' //autoincrement in SQLITE
.' term_name text, term_file text, term_count integer default 0)'
);
if ($err === false) {
$this->error = 'CouldNotCreateTable';
return false;
}
$err = $this->db->exec(
'CREATE INDEX lang_freq_terms_idx ON lang_freq(term_name, term_file)'
);
if ($err === false) {
$this->error = 'CouldNotCreateIndex';
return false;
}
// Table and index created, move on.
}
break;
case 'mysql': //implementation not finished
if (!function_exists('mysql_connect')) {
$this->error = 'SQLiteNotAvailable';
return false; //cannot use if sqlite not installed
}
$err = Database::query('SELECT * FROM lang_freq');
if ($err === false) { //the database probably does not exist, create it
$err = Database::query(
'CREATE TABLE lang_freq ('
.' id int PRIMARY KEY AUTO_INCREMENT, '
.' term_name text, term_file text default \'\', term_count int default 0)'
);
if ($err === false) {
$this->error = 'CouldNotCreateTable';
return false;
}
} // if no error, we assume the table exists
break;
}
return $this->db;
}
/**
* Add a count for a specific term.
*
* @param string The language term used
* @param string The file from which the language term came from
*
* @return mixed
*/
public function add_use($term, $term_file = '')
{
$term = $this->db->escapeString($term);
$term_file = $this->db->escapeString($term_file);
$sql = "SELECT id, term_name, term_file, term_count FROM lang_freq WHERE term_name='$term' and term_file='$term_file'";
$ress = $this->db->query($sql);
if ($ress === false) {
$this->error = 'CouldNotQueryTermFromTable';
return false;
}
$i = 0;
while ($row = $ress->fetchArray(SQLITE3_BOTH)) {
$num = $row[3];
$num++;
$i++;
$res = $this->db->query(
'UPDATE lang_freq SET term_count = '.$num.' WHERE id = '.$row[0]
);
if ($res === false) {
$this->error = 'CouldNotUpdateTerm';
return false;
} else {
return $row[0];
}
}
if ($i == 0) {
//No term found in the table, register as new term
$resi = $this->db->query(
"INSERT INTO lang_freq(term_name, term_file, term_count) VALUES ('$term', '$term_file', 1)"
);
if ($resi === false) {
$this->error = 'CouldNotInsertRow';
return false;
} else {
return $this->db->lastInsertRowID();
}
}
return true;
}
/**
* Function to get a list of the X most-requested terms.
*
* @param int Limit of terms to show
*
* @return array List of most requested terms
*/
public function get_popular_terms($num = 1000)
{
$num = (int) $num;
$res = $this->db->query(
'SELECT * FROM lang_freq
ORDER BY term_count DESC LIMIT '.$num
);
$list = [];
while ($row = $res->fetchArray()) {
$list[] = $row;
}
return $list;
}
/**
* Clear all records in lang_freq.
*
* @return resource true
*/
public function clear_all()
{
$res = sqlite_query($this->db, 'DELETE FROM lang_freq WHERE 1=1');
return $res;
}
/**
* Returns an array of all the language variables with their corresponding
* file of origin. This function tolerates a certain rate of error due to
* the duplication of variables in language files.
*
* @return array variable => origin file
*/
public function get_variables_origin()
{
$path = api_get_path(SYS_LANG_PATH).'english/';
$vars = [];
$priority = ['trad4all'];
foreach ($priority as $file) {
$list = SubLanguageManager::get_all_language_variable_in_file($path.$file.'.inc.php');
foreach ($list as $var => $trad) {
$vars[$var] = $file.'.inc.php';
}
}
$files = scandir($path);
foreach ($files as $file) {
if (substr($file, 0, 1) == '.' or in_array($file, $priority)) {
continue;
}
$list = SubLanguageManager::get_all_language_variable_in_file($path.$file);
foreach ($list as $var => $trad) {
$vars[$var] = $file;
}
}
return $vars;
}
}
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