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/*
* Copyright (c) 1997 - 2001 Hansjrg Malthaner
*
* This file is part of the Simutrans project under the artistic licence.
* (see licence.txt)
*/
#include "../simdebug.h"
#include <sys/stat.h>
#include <time.h>
#include "loadsave_frame.h"
#include "../simworld.h"
#include "../simversion.h"
#include "../dataobj/loadsave.h"
#include "../dataobj/translator.h"
#include "../dataobj/umgebung.h"
#include "../pathes.h"
#include "../utils/simstring.h"
stringhashtable_tpl<sve_info_t *> loadsave_frame_t::cached_info;
sve_info_t::sve_info_t(const char *pak_, time_t mod_, long fs)
: pak(""), mod_time(mod_), file_size(fs)
{
if(pak_) {
pak = pak_;
file_exists = true;
}
}
bool sve_info_t::operator== (const sve_info_t &other) const
{
return (mod_time==other.mod_time) && (file_size == other.file_size) && (pak.compare(other.pak)==0);
}
void sve_info_t::rdwr(loadsave_t *file)
{
const char *s = strdup(pak.c_str());
file->rdwr_str(s);
if (file->is_loading()) {
pak = s;
}
free(const_cast<char *>(s));
file->rdwr_longlong(mod_time);
file->rdwr_long(file_size);
}
/**
* Aktion, die nach Knopfdruck gestartet wird.
* @author Hansjrg Malthaner
*/
void loadsave_frame_t::action(const char *filename)
{
if(do_load) {
welt->laden(filename);
}
else {
welt->speichern( filename, umgebung_t::savegame_version_str, false );
welt->set_dirty();
welt->reset_timer();
}
}
bool loadsave_frame_t::del_action(const char *filename)
{
remove(filename);
return false;
}
loadsave_frame_t::loadsave_frame_t(karte_t *welt, bool do_load) : savegame_frame_t(".sve",NULL)
{
this->welt = welt;
this->do_load = do_load;
if(do_load) {
set_name(translator::translate("Laden"));
}
else {
set_filename(welt->get_settings().get_filename());
set_name(translator::translate("Speichern"));
}
// load cached entries
if (cached_info.empty()) {
loadsave_t file;
const char *cache_file = SAVE_PATH_X "_cached.xml";
if (file.rd_open(cache_file)) {
// ignore comment
const char *text=NULL;
file.rdwr_str(text);
bool ok = true;
while (ok) {
xml_tag_t t(&file, "save_game_info");
// first filename
file.rdwr_str(text);
if (!strempty(text)) {
sve_info_t *svei = new sve_info_t();
svei->rdwr(&file);
cached_info.put(text, svei);
text = NULL; // it is used as key, do not delete it
}
else {
ok = false;
}
}
if (text) {
free(const_cast<char *>(text));
}
file.close();
}
}
}
/**
* Manche Fenster haben einen Hilfetext assoziiert.
* @return den Dateinamen fr die Hilfe, oder NULL
* @author Hj. Malthaner
*/
const char * loadsave_frame_t::get_hilfe_datei() const
{
return do_load ? "load.txt" : "save.txt";
}
const char *loadsave_frame_t::get_info(const char *fname)
{
static char date[1024];
date[0] = 0;
const char *pak_extension = NULL;
// get file information
char path[1024];
sprintf( path, SAVE_PATH_X "%s", fname );
struct stat sb;
if(stat(path, &sb)!=0) {
// file not found?
return date;
}
// check hash table
sve_info_t *svei = cached_info.get(fname);
if (svei && svei->file_size == sb.st_size && svei->mod_time == sb.st_mtime) {
// compare size and mtime
// if both are equal then most likely the files are the same
// no need to read the file for pak_extension
pak_extension = svei->pak.c_str();
svei->file_exists = true;
}
else {
// read pak_extension from file
loadsave_t test;
test.rd_open(path);
// add pak extension
pak_extension = test.get_pak_extension();
// now insert in hash_table
sve_info_t *svei_new = new sve_info_t(pak_extension, sb.st_mtime, sb.st_size );
// copy filename
char *key = strdup(fname);
sve_info_t *svei_old = cached_info.set(key, svei_new);
if (svei_old) {
delete svei_old;
}
}
// write everything in string
// add pak extension
size_t n = sprintf( date, "%s - ", pak_extension);
// add the time too
struct tm *tm = localtime(&sb.st_mtime);
if(tm) {
strftime(date+n, 18, "%Y-%m-%d %H:%M", tm);
}
else {
tstrncpy(date, "??.??.???? ??:??", lengthof(date));
}
return date;
}
loadsave_frame_t::~loadsave_frame_t()
{
// save hashtable
loadsave_t file;
const char *cache_file = SAVE_PATH_X "_cached.xml";
file.wr_open(cache_file, loadsave_t::xml, "cache", SAVEGAME_VER_NR);
const char *text="Automatically generated file. Do not edit. An invalid file may crash the game. Deleting is allowed though.";
file.rdwr_str(text);
FOR(stringhashtable_tpl<sve_info_t*>, const& i, cached_info) {
// save only existing files
if (i.value->file_exists) {
xml_tag_t t(&file, "save_game_info");
char const* filename = i.key;
file.rdwr_str(filename);
i.value->rdwr(&file);
}
}
// mark end with empty entry
{
xml_tag_t t(&file, "save_game_info");
text = "";
file.rdwr_str(text);
}
file.close();
}
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