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Added method for loading from file handle.

This commit is contained in:
Thomas Tanghus 2012-02-16 10:35:35 +01:00
parent fa7fabf024
commit 0e2531ba57
1 changed files with 31 additions and 16 deletions
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47
lib/image.php
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@ -48,6 +48,11 @@ class OC_Image {
protected $imagetype = IMAGETYPE_PNG; // Default to png if file type isn't evident.
protected $filepath = null;
/**
* @brief Get mime type for an image file.
* @param $filepath The path to a local image file.
* @returns string The mime type if the it could be determined, otherwise an empty string.
*/
static public function getMimeTypeForFile($filepath) {
$imagetype = exif_imagetype($filepath);
return $imagetype ? image_type_to_mime_type($imagetype) : '';
@ -281,24 +286,46 @@ class OC_Image {
/**
* @brief Loads an image from a local file, a base64 encoded string or a resource created by an imagecreate* function.
* @param $imageref The path to a local file, a base64 encoded string or a resource created by an imagecreate* function.
* @param $imageref The path to a local file, a base64 encoded string or a resource created by an imagecreate* function or a file resource (file handle ).
* @returns An image resource or false on error
*/
public function load($imageref) {
if($this->loadFromFile($imageref) !== false) {
if(is_resource($imageref)) {
if(get_resource_type($imageref) == 'gd') {
$this->resource = $res;
return $this->resource;
} elseif(in_array(get_resource_type($imageref), array('file','stream'))) {
return $this->loadFromFileHandle($imageref);
}
} elseif($this->loadFromFile($imageref) !== false) {
return $this->resource;
} elseif($this->loadFromBase64($imageref) !== false) {
return $this->resource;
} elseif($this->loadFromData($imageref) !== false) {
return $this->resource;
} elseif($this->loadFromResource($imageref) !== false) {
return $this->resource;
} else {
OC_Log::write('core',__METHOD__.'(): couldn\'t load anything. Giving up!', OC_Log::DEBUG);
return false;
}
}
/**
* @brief Loads an image from an open file handle.
* It is the responsibility of the caller to position the pointer at the correct place and to close the handle again.
* @param $handle
* @returns An image resource or false on error
*/
public function loadFromFileHandle($handle) {
OC_Log::write('core',__METHOD__.'(): Trying', OC_Log::DEBUG);
$contents = '';
while (!feof($handle)) {
$contents .= fread($handle, 8192);
}
if($this->loadFromData($contents)) {
return $this->resource;
}
}
/**
* @brief Loads an image from a local file.
* @param $imageref The path to a local file.
@ -424,18 +451,6 @@ class OC_Image {
}
}
/**
* @brief Checks if image resource is valid and assigns it to $this->resource.
* @param $res An image resource.
* @returns An image resource or false on error
*/
public function loadFromResource($res) {
if(!is_resource($res)) {
return false;
}
$this->resource = $res;
}
/**
* @brief Resizes the image preserving ratio.
* @param $maxsize The maximum size of either the width or height.