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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
/*
* Ceph - scalable distributed file system
*
* Copyright (C) 2015 Red Hat Inc
*
* Author: John Spray <john.spray@redhat.com>
*
* This is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software
* Foundation. See file COPYING.
*
*/
#include "PyFormatter.h"
#include <fstream>
#define LARGE_SIZE 1024
void PyFormatter::open_array_section(std::string_view name)
{
PyObject *list = PyList_New(0);
dump_pyobject(name, list);
stack.push(cursor);
cursor = list;
}
void PyFormatter::open_object_section(std::string_view name)
{
PyObject *dict = PyDict_New();
dump_pyobject(name, dict);
stack.push(cursor);
cursor = dict;
}
void PyFormatter::dump_null(std::string_view name)
{
dump_pyobject(name, Py_None);
}
void PyFormatter::dump_unsigned(std::string_view name, uint64_t u)
{
PyObject *p = PyLong_FromUnsignedLong(u);
ceph_assert(p);
dump_pyobject(name, p);
}
void PyFormatter::dump_int(std::string_view name, int64_t u)
{
PyObject *p = PyLong_FromLongLong(u);
ceph_assert(p);
dump_pyobject(name, p);
}
void PyFormatter::dump_float(std::string_view name, double d)
{
dump_pyobject(name, PyFloat_FromDouble(d));
}
void PyFormatter::dump_string(std::string_view name, std::string_view s)
{
dump_pyobject(name, PyUnicode_FromString(s.data()));
}
void PyFormatter::dump_bool(std::string_view name, bool b)
{
if (b) {
Py_INCREF(Py_True);
dump_pyobject(name, Py_True);
} else {
Py_INCREF(Py_False);
dump_pyobject(name, Py_False);
}
}
std::ostream& PyFormatter::dump_stream(std::string_view name)
{
// Give the caller an ostream, construct a PyString,
// and remember the association between the two. On flush,
// we'll read from the ostream into the PyString
auto ps = std::make_shared<PendingStream>();
ps->cursor = cursor;
ps->name = name;
pending_streams.push_back(ps);
return ps->stream;
}
void PyFormatter::dump_format_va(std::string_view name, const char *ns, bool quoted, const char *fmt, va_list ap)
{
char buf[LARGE_SIZE];
vsnprintf(buf, LARGE_SIZE, fmt, ap);
dump_pyobject(name, PyUnicode_FromString(buf));
}
/**
* Steals reference to `p`
*/
void PyFormatter::dump_pyobject(std::string_view name, PyObject *p)
{
if (PyList_Check(cursor)) {
PyList_Append(cursor, p);
Py_DECREF(p);
} else if (PyDict_Check(cursor)) {
PyObject *key = PyUnicode_DecodeUTF8(name.data(), name.size(), nullptr);
PyDict_SetItem(cursor, key, p);
Py_DECREF(key);
Py_DECREF(p);
} else {
ceph_abort();
}
}
void PyFormatter::finish_pending_streams()
{
for (const auto &i : pending_streams) {
PyObject *tmp_cur = cursor;
cursor = i->cursor;
dump_pyobject(
i->name.c_str(),
PyUnicode_FromString(i->stream.str().c_str()));
cursor = tmp_cur;
}
pending_streams.clear();
}
PyObject* PyJSONFormatter::get()
{
if(json_formatter::stack_size()) {
close_section();
}
ceph_assert(!json_formatter::stack_size());
std::ostringstream ss;
flush(ss);
std::string s = ss.str();
PyObject* obj = PyBytes_FromStringAndSize(std::move(s.c_str()), s.size());
return obj;
}
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