Function CheckFile

python/caffe/_caffe.cpp:77–84

For convenience, check that input files can be opened, and raise an exception that boost will send to Python if not (caffe could still crash later if the input files are disturbed before they are actually used, but this saves frustration in most cases).

// later if the input files are disturbed before they are actually used, but
// this saves frustration in most cases).
static void CheckFile(const string& filename) {
    std::ifstream f(filename.c_str());
    if (!f.good()) {
      f.close();
      throw std::runtime_error("Could not open file " + filename);
    }
    f.close();
}

void CheckContiguousArray(PyArrayObject* arr, string name,
    int channels, int height, int width) {