Javacpp-presets: How to use TessBaseAPI.init() to load xxx.traineddata file from InputStream

[weixsun]

I want initialize "chi_sim.traineddata" via TessBaseAPI.init() method，but my program only permit to initialize from InputStream,

//The way only load file via filename
if (tessBaseAPI.Init("/user/share/tessdata", "chi_sim") != 0) {
    log.error("Could not initialize tesseract.");
    throw new IOException();
}

how to initialize from inputStream? please

[saudet]

I don't think Tesseract supports that any other way than by creating a temporary file.

[weixsun]

@saudet thank you , if Tesseract don't support use inputstream to initialize tessdata, the following coe will help others when tessdata from inputstream.

        InputStream inputStream = resource.getInputStream();
        File somethingFile = File.createTempFile("chi_sim", ".traineddata");
        FileUtils.copyInputStreamToFile(inputStream, somethingFile);

        if (tessBaseAPI.Init(somethingFile.getParent(),
                FilenameUtils.getBaseName(somethingFile.getName())) != 0) {
            log.error("Could not initialize tesseract.");
            throw new IOException();
        }