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make it possible to bootstrap an .ngf from a cookie

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This commit is contained in:
Krasimir Angelov
2023-09-07 10:07:49 +02:00
parent d110140107
commit f1af1c8be4
5 changed files with 196 additions and 3 deletions
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63
src/runtime/python/pypgf.c
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@@ -1616,18 +1616,75 @@ pgf_readPGF(PyObject *self, PyObject *args)
return py_pgf;
}
#if defined(__linux__) || defined(__APPLE__)
static
#if defined(__linux__)
ssize_t py_readfn(void *cookie, char *mem, size_t size)
#else
int py_readfn(void *cookie, char *mem, int size)
#endif
{
PyObject *source = (PyObject *) cookie;
PyObject *mv =
PyMemoryView_FromMemory(mem, (Py_ssize_t) size, PyBUF_WRITE);
PyObject *res =
PyObject_CallOneArg(source, mv);
Py_DECREF(mv);
if (res == NULL) {
PyErr_PrintEx(0);
errno = EINVAL;
return -1;
}
if (!PyLong_Check(res)) {
Py_DECREF(res);
errno = EINVAL;
return -1;
}
ssize_t n = PyLong_AsSsize_t(res);
Py_DECREF(res);
return n;
}
#endif
static PGFObject *
pgf_bootNGF(PyObject *self, PyObject *args)
{
const char *fpath; // pgf
#if defined(__linux__) || defined(__APPLE__)
PyObject *source;
const char *npath; // ngf
if (!PyArg_ParseTuple(args, "Os", &source, &npath))
return NULL;
PgfExn err;
PGFObject *py_pgf = (PGFObject *)pgf_PGFType.tp_alloc(&pgf_PGFType, 0);
if (PyUnicode_Check(source)) {
const char *fpath = PyUnicode_AsUTF8(source);
py_pgf->db = pgf_boot_ngf(fpath, npath, &py_pgf->revision, NULL, &err);
} else if (PyCallable_Check(source)) {
py_pgf->db = pgf_boot_ngf_cookie(source, py_readfn, npath, &py_pgf->revision, NULL, &err);
} else {
Py_DECREF(py_pgf);
PyErr_SetString(PyExc_TypeError, "The first argument must be a string or a callable function");
return NULL;
}
#else
const char *fpath // pgf
const char *npath; // ngf
if (!PyArg_ParseTuple(args, "ss", &fpath, &npath))
return NULL;
PGFObject *py_pgf = (PGFObject *)pgf_PGFType.tp_alloc(&pgf_PGFType, 0);
PgfExn err;
PGFObject *py_pgf = (PGFObject *)pgf_PGFType.tp_alloc(&pgf_PGFType, 0);
py_pgf->db = pgf_boot_ngf(fpath, npath, &py_pgf->revision, NULL, &err);
#endif
if (handleError(err) != PGF_EXN_NONE) {
Py_DECREF(py_pgf);
return NULL;