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Handle TIFF files with multiple pages

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This commit is contained in:
Alex Cabal 2025-02-08 11:53:40 -06:00
parent 5e23837d17
commit 0c2dce3f63
4 changed files with 32 additions and 14 deletions
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34
lib/Image.php
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@ -1,5 +1,6 @@
<?
use function Safe\exec;
use function Safe\glob;
use function Safe\imagecopyresampled;
use function Safe\imagecreatetruecolor;
use function Safe\imagejpeg;
@ -46,23 +47,40 @@ class Image{
* @throws Exceptions\InvalidImageUploadException
*/
private function GetImageHandleFromTiff(){
$tempFilename = sys_get_temp_dir() . '/se-' . pathinfo($this->Path)['filename'] . '.jpg';
$basename = pathinfo($this->Path)['filename'];
$tempDirectory = sys_get_temp_dir();
$tempFilename = $tempDirectory . '/se-' . $basename . '.jpg';
try{
exec('convert '. escapeshellarg($this->Path) . ' ' . escapeshellarg($tempFilename), $shellOutput, $resultCode);
if($resultCode !== 0 || !is_file($tempFilename)){
if($resultCode !== 0){
throw new Exceptions\InvalidImageUploadException('Failed to convert TIFF to JPEG');
}
$handle = \Safe\imagecreatefromjpeg($tempFilename);
// Sometimes TIFF files can have multiple images, or "pages" in one file. In that case, `convert` outputs multiple files named `<file>-0.jpg`, `<file>-1.jpg`, etc., instead of `<file>.jpg`.
// Test for that case here.
$pagedFilename = $tempDirectory . '/se-' . $basename . '-0.jpg';
if(is_file($pagedFilename)){
// This TIFF has pages!
$handle = \Safe\imagecreatefromjpeg($pagedFilename);
}
elseif(is_file($tempFilename)){
// Regular TIFF.
$handle = \Safe\imagecreatefromjpeg($tempFilename);
}
else{
throw new Exceptions\InvalidImageUploadException('Failed to convert TIFF to JPEG');
}
}
finally{
try{
unlink($tempFilename);
}
catch(Exception){
// Pass if file doesn't exist.
foreach(glob($tempDirectory . '/se-' . $basename . '*.jpg') as $filename){
try{
@unlink($filename);
}
catch(Exception){
// Pass.
}
}
}