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GWM : merge pdf

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This commit is contained in:
Gowtham M 2026-05-12 15:34:27 +05:30
parent 1d812d9a93
commit 1a950150a3
1 changed files with 77 additions and 8 deletions
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85
app/Helpers/merge_pdf_helper.php
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@ -141,14 +141,8 @@ if (! function_exists('merge_ticket_pdfs')) {
$src = $sourceFile['path'];
try {
if ($sourceFile['mime'] === 'application/pdf') {
$pageCount = $mpdf->setSourceFile($src);
for ($p = 1; $p <= $pageCount; $p++) {
$tplId = $mpdf->importPage($p);
$mpdf->AddPage();
// adjustPageSize=true makes the output page match the imported page.
$mpdf->useTemplate($tplId, 0, 0, null, null, true);
$totalPages++;
}
$pageCount = merge_ticket_pdf_add_pdf_pages($mpdf, $src, $tempDir);
$totalPages += $pageCount;
log_message('error', "merge_ticket_pdfs | added PDF | file={$src} | pages={$pageCount}");
} elseif (in_array($sourceFile['mime'], ['image/jpeg', 'image/png'], true)) {
if (merge_ticket_pdf_add_image_page($mpdf, $src)) {
@ -226,6 +220,81 @@ if (! function_exists('merge_ticket_pdfs')) {
}
}
if (! function_exists('merge_ticket_pdf_add_pdf_pages')) {
/**
* Import PDF pages. If FPDI cannot import the source (commonly encrypted
* PDFs), normalize through Ghostscript and retry.
*/
function merge_ticket_pdf_add_pdf_pages(Mpdf $mpdf, string $pdfPath, string $tempDir): int
{
try {
return merge_ticket_pdf_import_pdf_pages($mpdf, $pdfPath);
} catch (\Throwable $e) {
log_message('error', "merge_ticket_pdfs | direct PDF import failed | file={$pdfPath} | " . $e->getMessage());
$normalizedPath = merge_ticket_pdf_normalize_with_ghostscript($pdfPath, $tempDir);
if ($normalizedPath === null) {
throw $e;
}
try {
$pageCount = merge_ticket_pdf_import_pdf_pages($mpdf, $normalizedPath);
log_message('error', "merge_ticket_pdfs | Ghostscript normalized PDF imported | original={$pdfPath} | normalized={$normalizedPath} | pages={$pageCount}");
@unlink($normalizedPath);
return $pageCount;
} catch (\Throwable $normalizedError) {
@unlink($normalizedPath);
throw $normalizedError;
}
}
}
}
if (! function_exists('merge_ticket_pdf_import_pdf_pages')) {
function merge_ticket_pdf_import_pdf_pages(Mpdf $mpdf, string $pdfPath): int
{
$pageCount = $mpdf->setSourceFile($pdfPath);
for ($p = 1; $p <= $pageCount; $p++) {
$tplId = $mpdf->importPage($p);
$mpdf->AddPage();
// adjustPageSize=true makes the output page match the imported page.
$mpdf->useTemplate($tplId, 0, 0, null, null, true);
}
return $pageCount;
}
}
if (! function_exists('merge_ticket_pdf_normalize_with_ghostscript')) {
function merge_ticket_pdf_normalize_with_ghostscript(string $pdfPath, string $tempDir): ?string
{
$ghostscript = is_executable('/usr/bin/gs') ? '/usr/bin/gs' : trim((string) @shell_exec('command -v gs 2>/dev/null'));
if ($ghostscript === '' || ! is_executable($ghostscript)) {
log_message('error', "merge_ticket_pdfs | Ghostscript not available for PDF normalization | file={$pdfPath}");
return null;
}
$normalizedPath = rtrim($tempDir, '/\\') . DIRECTORY_SEPARATOR . 'normalized_' . uniqid('', true) . '.pdf';
$cmd = escapeshellarg($ghostscript)
. ' -q -dNOPAUSE -dBATCH -dSAFER -sDEVICE=pdfwrite -dCompatibilityLevel=1.4'
. ' -sOutputFile=' . escapeshellarg($normalizedPath)
. ' ' . escapeshellarg($pdfPath)
. ' 2>&1';
$output = [];
$exitCode = 1;
@exec($cmd, $output, $exitCode);
if ($exitCode !== 0 || ! is_file($normalizedPath) || filesize($normalizedPath) <= 0) {
log_message('error', 'merge_ticket_pdfs | Ghostscript normalization failed | file=' . $pdfPath . ' | exit=' . $exitCode . ' | output=' . implode(' ', $output));
@unlink($normalizedPath);
return null;
}
return $normalizedPath;
}
}
if (! function_exists('merge_ticket_pdf_resolve_mime')) {
/**
* Resolve file type from stored MIME, filesystem MIME, and extension.