obligatorische kackscheisse

master
blastmaster 9 years ago
parent 8d91ec55b8
commit 20fc098c89

@ -0,0 +1,179 @@
#ifndef __SICCCPERSISTER_H_
#define __SICCCPERSISTER_H_
#include <jansson.h>
#include <dirent.h>
#include <sys/types.h>
#include <cstring>
#include <iostream>
#include <vector>
#include "sicccobject.H"
static json_t * load_json(const std::string &s)
{
assert(!s.empty());
std::cout << "[DEBUG] joad_json: " << s << std::endl;
json_t *root = nullptr;
json_error_t error;
root = json_load_file(s.c_str(), JSON_DECODE_ANY, &error);
if (!root) {
/* std::cerr << "[read_json] " << error << std::endl; */
return nullptr;
}
return root;
}
static std::string get_string_from_json(const json_t *j)
{
assert(j);
assert(json_is_string(j));
const char *tmp = json_string_value(j);
assert(tmp);
return std::string(tmp);
}
static json_t *get_json_from_string(const std::string &s)
{
json_t* ret = json_string(s.c_str());
assert(ret);
return ret;
}
static unsigned int get_integer_from_json(const json_t *j)
{
assert(j);
assert(json_is_integer(j));
return json_integer_value(j);
}
static json_t *get_json_from_integer(const unsigned int value)
{
assert(value);
json_t* ret = json_integer(value);
assert(ret);
return ret;
}
static std::chrono::time_point<std::chrono::system_clock>
get_time_from_json(const json_t *j)
{
assert(j);
auto tmp = get_string_from_json(j);
time_t t = stol(tmp);
return std::chrono::system_clock::from_time_t(t);
}
static std::string time_to_string(const std::chrono::time_point<std::chrono::system_clock>& t)
{
time_t time = std::chrono::system_clock::to_time_t(t);
std::string ret = std::to_string(time);
return ret;
}
/** TODO
* implement bool operator to take advantages of the use of assert
*/
static json_t *get_json_from_sicccobject(const Sicccobject& so)
{
json_t *root = json_object();
json_object_set_new(root, "filename", get_json_from_string(so.get_filename()));
json_object_set_new(root, "filetype", get_json_from_string(so.get_filetype()));
json_object_set_new(root, "path", get_json_from_string(so.get_path()));
json_object_set_new(root, "size", get_json_from_integer(so.get_size()));
std::string tmp = time_to_string(so.get_uploadtime());
json_object_set_new(root, "upload_time", get_json_from_string(tmp));
assert(root);
return root;
}
static std::string get_json_string_representation(const json_t *j)
{
assert(j);
assert(json_is_object(j));
const char *tmp = json_dumps(j, JSON_INDENT(4));
assert(tmp);
std::string ret(tmp);
free((void*) tmp);
return ret;
}
class SicccPersister
{
public:
SicccPersister()
{
root = json_object();
perists_path = "./";
json_file_name = "foo.json"; // not the best default
};
SicccPersister(const Sicccobject& so)
{
root = get_json_from_sicccobject(so);
perists_path = "./";
json_file_name = so.get_filename();
}
SicccPersister(json_t *j)
{
root = json_object();
json_object_update(root, j);
}
/*TODO
* clean up path handling
*/
SicccPersister(const std::string& jsonfilename,
const std::string& storepath
) : perists_path(storepath), json_file_name(jsonfilename)
{
root = load_json(std::string(perists_path + json_file_name));
assert(root);
}
~SicccPersister()
{
if (root)
json_decref(root);
}
int write_sicccfile(const Sicccobject&);
int write_sicccfile();
std::vector<Sicccobject> read_sicccdir();
Sicccobject read_json(const std::string&);
Sicccobject read_json() { return read_json(json_file_name); }
void set_persist_path(std::string&);
void set_json_filename(std::string&);
friend std::ostream& operator << (std::ostream& out, const SicccPersister &p)
{
out << get_json_string_representation(p.root);
return out;
}
friend std::ostream& operator << (std::ostream& out, const json_t *j)
{
assert(j);
out << get_json_string_representation(j);
return out;
}
private:
std::string perists_path;
std::string json_file_name;
json_t *root;
std::string
inline beautify_filename()
{
std::string s;
if (json_file_name.empty()) return s;
size_t pos = json_file_name.find_last_of(".");
s = json_file_name.substr(0, pos + 1);
s.append("json");
return s;
}
};
#endif /* __SICCCPERSISTER_H_ */

@ -0,0 +1,70 @@
#include "sicccPersister.H"
/*TODO
* check if path is valid
*/
void
SicccPersister::set_persist_path(std::string &s)
{
assert(!s.empty());
perists_path = s;
}
void
SicccPersister::set_json_filename(std::string &s)
{
assert(!s.empty());
json_file_name = s;
}
int
SicccPersister::write_sicccfile(const Sicccobject& so)
{
json_t *new_json = get_json_from_sicccobject(so);
if (json_object_update(root, new_json) == 0)
std::cout << "[DEBUG] update root json successfully" << std::endl;
else
std::cerr << "Error update root failed" << std::endl;
assert(root);
int ret = write_sicccfile();
return ret;
}
int
SicccPersister::write_sicccfile()
{
assert(!json_file_name.empty());
std::string store_str = perists_path + "/" + beautify_filename();
assert(root);
int ret = json_dump_file(root, store_str.c_str(), JSON_INDENT(4));
return ret;
}
Sicccobject
SicccPersister::read_json(const std::string &s)
{
root = load_json(s);
return Sicccobject(root);
}
std::vector<Sicccobject>
SicccPersister::read_sicccdir()
{
DIR *dir = nullptr;
struct dirent *entry = nullptr;
std::vector<Sicccobject> v;
json_error_t *error = nullptr;
if ((dir = opendir(perists_path.c_str())) == NULL) {
std::cerr << "Error could not open directory" << std::endl;
return v; // should throw exception instea1d
}
while ((entry = readdir(dir)) != NULL) {
if (std::strstr(entry->d_name, ".json") == NULL)
continue;
json_t *tmp = json_load_file(entry->d_name, JSON_DECODE_ANY, error);
assert(tmp);
Sicccobject so(tmp);
v.push_back(so);
}
return v;
}

@ -5,6 +5,9 @@
#include <chrono>
#include <cstdlib>
#include <jansson.h>
#include <assert.h>
class Sicccobject {
public:
Sicccobject() {} // just for test cases
@ -43,6 +46,7 @@ class Sicccobject {
size(sz),
upload_date(date) { }
Sicccobject(const json_t*);
Sicccobject(const Sicccobject&);
~Sicccobject() {}
Sicccobject& operator = (const Sicccobject&);

@ -1,4 +1,25 @@
#include "sicccobject.H"
#include "sicccPersister.H"
// FIXME:
// check for right reference counting of val
Sicccobject::Sicccobject(const json_t *j)
{
assert(j);
json_t *val;
val = json_object_get(j, "filename");
filename = get_string_from_json(val);
val = json_object_get(j, "filetype");
filetype = get_string_from_json(val);
val = json_object_get(j, "path");
path = get_string_from_json(val);
val = json_object_get(j, "size");
size = get_integer_from_json(val);
val = json_object_get(j, "upload_time");
upload_date = get_time_from_json(val);
json_decref(val);
}
Sicccobject::Sicccobject(const Sicccobject& obj)
{
@ -27,7 +48,7 @@ Sicccobject::operator = (const Sicccobject& obj)
std::ostream&
operator << (std::ostream& out, const Sicccobject& obj)
{
std::time_t time =
std::time_t time =
std::chrono::system_clock::to_time_t(obj.get_uploadtime());
out << "[Filename] " << obj.get_filename() << std::endl
<< "[Filetype] " << obj.get_filetype() << std::endl

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