ValidateLinearizationFile

Document inspection, Optimisation

Description

Performs an independent structural audit of a Fast Web View PDF and stores a machine-readable validation report

The audit checks the linearization dictionary, file length, primary hint range, page-offset and shared-object bit tables, first-page object and byte range, first-page dependency closure, page count, and the main cross-reference entry

Syntax

Delphi

Function TPDFlib.ValidateLinearizationFile(Const InputFileName, Password: WideString): Integer;

DLL

int DLValidateLinearizationFile(int InstanceID, const wchar_t* InputFileName, const wchar_t* Password);

ActiveX

Function PDFlib::ValidateLinearizationFile(InputFileName As String, Password As String) As Long

Parameters

InputFileName	The PDF file to inspect
Password	The password required to inspect encrypted hint data, or an empty string

Return values

1	The file passed every required linearization and first-page integrity check
0	The file is missing, unreadable, not linearized, or has at least one invalid linearization structure

Remarks

Call GetLinearizationValidationReport after this method to retrieve the JSON result and byte metrics

A failed hint audit does not change normal PDF loading because hint data is treated only as a delivery optimisation