DocumentBuilder C++ API: Convert DOCX to PDF failed with V8 error

[anatoly-spb]

Describe your problem:

I try to convert docx/xlsx file to pdf, but my program finished with:

TypeError: Cannot read property 'length' of undefined
    at Object.a.AscCommon.NU.decode.a.AscCommon.NU.decode (<anonymous>:11662:172)
    at e (<anonymous>:11577:526)
    at n.au (<anonymous>:11597:402)
    at Object.au (<anonymous>:11602:10)
    at e.vGd (<anonymous>:10401:495)
    at e.vGd (<anonymous>:10704:213)
    at <anonymous>:10345:382
    at da (<anonymous>:9653:313)
    at Object.a.AscCommon.aQh (<anonymous>:9835:127)
    at e.yO (<anonymous>:10345:345)

#
# Fatal error in v8::ToLocalChecked
# Empty MaybeLocal.
#

Steps to reproduce the problem:

compile and run C++ program based on your /opt/onlyoffice/documentbuilder/libdoctrenderer.so:

    using namespace NSDoctRenderer;
    CDocBuilder::Initialize(L"/opt/onlyoffice/documentbuilder");
    {
      CDocBuilder oBuilder;
      oBuilder.SetProperty("--work-directory", L"/opt/onlyoffice/documentbuilder");
      oBuilder.CreateFile(L"docx");
      oBuilder.SaveFile(L"pdf", L"my.pdf");
    }

the same error with xlsx:

 using namespace NSDoctRenderer;
 CDocBuilder::Initialize(L"/opt/onlyoffice/documentbuilder");
 {
   CDocBuilder oBuilder;
   oBuilder.SetProperty("--work-directory", L"/opt/onlyoffice/documentbuilder");
   oBuilder.CreateFile(L"xlsx");
   oBuilder.SaveFile(L"pdf", L"my.pdf");
 }

Here is the demo project https://github.com/anatoly-spb/onlyoffice-documentbuilder-cxx-api-demo

DocumentBuilder version:

8.0.0.99

Installation method:

rpm -ivh https://download.onlyoffice.com/install/desktop/docbuilder/linux/onlyoffice-documentbuilder.x86_64.rpm

Operating system:

CentOS 6
g++ (GCC) 11.4.1 20230605

[cccs-rs]

I ran into this issue as well with running DocumentBuilder in a Docker image using the Python API, no problems with testing on my buildhost.

@kam193 found that for some reason you have to try loading the CDocBuilder as root, and then it will work for other users:
https://github.com/CybercentreCanada/assemblyline-service-document-preview/blob/5e6dd549e9bb04fc4c04d68eb98c2e00a50001ae/Dockerfile#L63

Not sure if the authors/maintainers could explain why that is but I suspect maybe something has to be initialized but it requires certain privileges in order to do so?

[askonev]

@anatoly-spb At the moment, we are working on up-to-date documentation cdocbuilder/savefile/

If we consider the compilation script of a program for converting docx to pdf

format types

// main.cpp
#include "common.h"
#include "docbuilder.h"

using namespace NSDoctRenderer;

const wchar_t* workDir = L"/opt/onlyoffice/documentbuilder";
const wchar_t* filePath = L"/opt/onlyoffice/documentbuilder/empty/new.docx";
const wchar_t* resultPath = L"result.pdf";

int main()
{
    // initialize DocBuilder
    CDocBuilder::Initialize(workDir);
    CDocBuilder builder;
    builder.OpenFile(filePath, L"");

    // save as PDF and close
    builder.SaveFile(OFFICESTUDIO_FILE_DOCUMENT_OFORM_PDF, resultPath);
    builder.CloseFile();
    CDocBuilder::Dispose();
    return 0;
}

// compile flags
g++ -I/opt/onlyoffice/documentbuilder/include \
 -L/opt/onlyoffice/documentbuilder \
 -Wl,--unresolved-symbols=ignore-in-shared-libs main.cpp \
  -ldoctrenderer

And for the resulting program to work correctly, you need to add a global variable with a path to document builder.

export LD_LIBRARY_PATH=/opt/onlyoffice/documentbuilder

[askonev]

@cccs-rs Can I ask you to issue a new issue because it does not relate to the problem described in this topic?