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MDL-34290 curl class: add functions to return error code and to download one file

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Marina Glancy 2012-07-31 08:51:27 +08:00
parent d71c486507
commit a3c94686aa
1 changed files with 69 additions and 0 deletions
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69
lib/filelib.php
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@ -2752,6 +2752,8 @@ class curl {
public $info;
/** @var string error */
public $error;
/** @var int error code */
public $errno;
/** @var array cURL options */
private $options;
@ -2895,6 +2897,7 @@ class curl {
unset($this->options['CURLOPT_INFILE']);
unset($this->options['CURLOPT_INFILESIZE']);
unset($this->options['CURLOPT_CUSTOMREQUEST']);
unset($this->options['CURLOPT_FILE']);
}
/**
@ -3119,6 +3122,7 @@ class curl {
$this->info = curl_getinfo($curl);
$this->error = curl_error($curl);
$this->errno = curl_errno($curl);
if ($this->debug){
echo '<h1>Return Data</h1>';
@ -3202,6 +3206,62 @@ class curl {
return $this->request($url, $options);
}
/**
* Downloads one file and writes it to the specified file handler
*
* <code>
* $c = new curl();
* $file = fopen('savepath', 'w');
* $result = $c->download_one('http://localhost/', null,
* array('file' => $file, 'timeout' => 5, 'followlocation' => true, 'maxredirs' => 3));
* fclose($file);
* $download_info = $c->get_info();
* if ($result === true) {
* // file downloaded successfully
* } else {
* $error_text = $result;
* $error_code = $c->get_errno();
* }
* </code>
*
* <code>
* $c = new curl();
* $result = $c->download_one('http://localhost/', null,
* array('filepath' => 'savepath', 'timeout' => 5, 'followlocation' => true, 'maxredirs' => 3));
* // ... see above, no need to close handle and remove file if unsuccessful
* </code>
*
* @param string $url
* @param array|null $params key-value pairs to be added to $url as query string
* @param array $options request options. Must include either 'file' or 'filepath'
* @return bool|string true on success or error string on failure
*/
public function download_one($url, $params, $options = array()) {
$options['CURLOPT_HTTPGET'] = 1;
$options['CURLOPT_BINARYTRANSFER'] = true;
if (!empty($params)){
$url .= (stripos($url, '?') !== false) ? '&' : '?';
$url .= http_build_query($params, '', '&');
}
if (!empty($options['filepath']) && empty($options['file'])) {
// open file
if (!($options['file'] = fopen($options['filepath'], 'w'))) {
$this->errno = 100;
return get_string('cannotwritefile', 'error', $options['filepath']);
}
$filepath = $options['filepath'];
}
unset($options['filepath']);
$result = $this->request($url, $options);
if (isset($filepath)) {
fclose($options['file']);
if ($result !== true) {
unlink($filepath);
}
}
return $result;
}
/**
* HTTP PUT method
*
@ -3279,6 +3339,15 @@ class curl {
public function get_info() {
return $this->info;
}
/**
* Get curl error code
*
* @return int
*/
public function get_errno() {
return $this->errno;
}
}
/**