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<?php
/**
* ################################################################################
* UTILITIES
* ################################################################################
*/
/**
* Util function returns an array value, if not defined then returns default instead.
*
* @param Array $array
* @param string $key
* @param variant $default
*/
function imsanity_val( $arr, $key, $default='' ) {
return isset( $arr[$key] ) ? $arr[ $key ] : $default;
}
/**
* Get mimetype based on file extension instead of file contents when speed outweighs accuracy.
*
* @param string $path The name of the file.
* @return string|bool The mime type based on the extension or false.
*/
function imsanity_quick_mimetype( $path ) {
$pathextension = strtolower( pathinfo( $path, PATHINFO_EXTENSION ) );
switch ( $pathextension ) {
case 'jpg':
case 'jpeg':
case 'jpe':
return 'image/jpeg';
case 'png':
return 'image/png';
case 'gif':
return 'image/gif';
case 'pdf':
return 'application/pdf';
default:
return false;
}
}
/**
* Gets the orientation/rotation of a JPG image using the EXIF data.
*
* @param string $file Name of the file.
* @param string $type Mime type of the file.
* @return int|bool The orientation value or false.
*/
function imsanity_get_orientation( $file, $type ) {
if ( function_exists( 'exif_read_data' ) && 'image/jpeg' === $type ) {
$exif = @exif_read_data( $file );
if ( is_array( $exif ) && array_key_exists( 'Orientation', $exif ) ) {
return $exif['Orientation'];
}
}
return false;
}
/**
* output a fatal error and optionally die
*
* @param string $message
* @param string $title
* @param bool $die
*/
function imsanity_fatal( $message, $title = "", $die = false ) {
echo ( "<div style='margin:5px 0px 5px 0px;padding:10px;border: solid 1px red; background-color: #ff6666; color: black;'>"
. ( $title ? "<h4 style='font-weight: bold; margin: 3px 0px 8px 0px;'>" . $title . "</h4>" : "" )
. $message
. "</div>" );
if ( $die ) die();
}
/**
* Replacement for deprecated image_resize function
* @param string $file Image file path.
* @param int $max_w Maximum width to resize to.
* @param int $max_h Maximum height to resize to.
* @param bool $crop Optional. Whether to crop image or resize.
* @param string $suffix Optional. File suffix.
* @param string $dest_path Optional. New image file path.
* @param int $jpeg_quality Optional, default is 90. Image quality percentage.
* @return mixed WP_Error on failure. String with new destination path.
*/
function imsanity_image_resize( $file, $max_w, $max_h, $crop = false, $suffix = null, $dest_path = null, $jpeg_quality = 82 ) {
if ( function_exists( 'wp_get_image_editor' ) ) {
// WP 3.5 and up use the image editor
$editor = wp_get_image_editor( $file );
if ( is_wp_error( $editor ) )
return $editor;
$editor->set_quality( $jpeg_quality );
$ftype = imsanity_quick_mimetype( $file );
$orientation = imsanity_get_orientation( $file, $ftype );
// try to correct for auto-rotation if the info is available
// if ( function_exists( 'exif_read_data' ) && ( $ftype == 'image/jpeg' ) ) {
// $exif = @exif_read_data( $file );
// $orientation = is_array( $exif ) && array_key_exists( 'Orientation', $exif ) ? $exif['Orientation'] : 0;
switch ( $orientation ) {
case 3:
$editor->rotate( 180 );
break;
case 6:
$editor->rotate( -90 );
break;
case 8:
$editor->rotate( 90 );
break;
}
// }
$resized = $editor->resize( $max_w, $max_h, $crop );
if ( is_wp_error( $resized ) )
return $resized;
$dest_file = $editor->generate_filename( $suffix, $dest_path );
// FIX: make sure that the destination file does not exist. this fixes
// an issue during bulk resize where one of the optimized media filenames may get
// used as the temporary file, which causes it to be deleted.
while ( file_exists( $dest_file ) ) {
$dest_file = $editor->generate_filename( 'TMP', $dest_path );
}
$saved = $editor->save( $dest_file );
if ( is_wp_error( $saved ) )
return $saved;
return $dest_file;
}
return false;
}
?>
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