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Location: cpp/openttd-patchpack/source/src/saveload/strings_sl.cpp - annotation
r20994:35b83b9520b2
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(svn r26068) -Fix: unneeded NULL check
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/*
* This file is part of OpenTTD.
* OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
* OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
*/
/** @file strings_sl.cpp Code handling saving and loading of strings */
#include "../stdafx.h"
#include "../string_func.h"
#include "saveload_internal.h"
#include "table/strings.h"
static const int NUM_OLD_STRINGS = 512; ///< The number of custom strings stored in old savegames.
static const int LEN_OLD_STRINGS = 32; ///< The number of characters per string.
static const int LEN_OLD_STRINGS_TTO = 24; ///< The number of characters per string in TTO savegames.
/**
* Remap a string ID from the old format to the new format
* @param s StringID that requires remapping
* @return translated ID
*/
StringID RemapOldStringID(StringID s)
{
switch (s) {
case 0x0006: return STR_SV_EMPTY;
case 0x7000: return STR_SV_UNNAMED;
case 0x70E4: return SPECSTR_COMPANY_NAME_START;
case 0x70E9: return SPECSTR_COMPANY_NAME_START;
case 0x8864: return STR_SV_TRAIN_NAME;
case 0x902B: return STR_SV_ROAD_VEHICLE_NAME;
case 0x9830: return STR_SV_SHIP_NAME;
case 0xA02F: return STR_SV_AIRCRAFT_NAME;
default:
if (IsInsideMM(s, 0x300F, 0x3030)) {
return s - 0x300F + STR_SV_STNAME;
} else {
return s;
}
}
}
/** Location to load the old names to. */
char *_old_name_array = NULL;
/**
* Copy and convert old custom names to UTF-8.
* They were all stored in a 512 by 32 (200 by 24 for TTO) long string array
* and are now stored with stations, waypoints and other places with names.
* @param id the StringID of the custom name to clone.
* @return the clones custom name.
*/
char *CopyFromOldName(StringID id)
{
/* Is this name an (old) custom name? */
if (GB(id, 11, 5) != 15) return NULL;
if (IsSavegameVersionBefore(37)) {
/* Allow for expansion when converted to UTF-8. */
char tmp[LEN_OLD_STRINGS * MAX_CHAR_LENGTH];
uint offs = _savegame_type == SGT_TTO ? LEN_OLD_STRINGS_TTO * GB(id, 0, 8) : LEN_OLD_STRINGS * GB(id, 0, 9);
const char *strfrom = &_old_name_array[offs];
char *strto = tmp;
for (; *strfrom != '\0'; strfrom++) {
WChar c = (byte)*strfrom;
/* Map from non-ISO8859-15 characters to UTF-8. */
switch (c) {
case 0xA4: c = 0x20AC; break; // Euro
case 0xA6: c = 0x0160; break; // S with caron
case 0xA8: c = 0x0161; break; // s with caron
case 0xB4: c = 0x017D; break; // Z with caron
case 0xB8: c = 0x017E; break; // z with caron
case 0xBC: c = 0x0152; break; // OE ligature
case 0xBD: c = 0x0153; break; // oe ligature
case 0xBE: c = 0x0178; break; // Y with diaresis
default: break;
}
/* Check character will fit into our buffer. */
if (strto + Utf8CharLen(c) > lastof(tmp)) break;
strto += Utf8Encode(strto, c);
}
/* Terminate the new string and copy it back to the name array */
*strto = '\0';
return strdup(tmp);
} else {
/* Name will already be in UTF-8. */
return strdup(&_old_name_array[LEN_OLD_STRINGS * GB(id, 0, 9)]);
}
}
/**
* Free the memory of the old names array.
* Should be called once the old names have all been converted.
*/
void ResetOldNames()
{
free(_old_name_array);
_old_name_array = NULL;
}
/**
* Initialize the old names table memory.
*/
void InitializeOldNames()
{
free(_old_name_array);
_old_name_array = CallocT<char>(NUM_OLD_STRINGS * LEN_OLD_STRINGS); // 200 * 24 would be enough for TTO savegames
}
/**
* Load the NAME chunk.
*/
static void Load_NAME()
{
int index;
while ((index = SlIterateArray()) != -1) {
if (index >= NUM_OLD_STRINGS) SlErrorCorrupt("Invalid old name index");
if (SlGetFieldLength() > (uint)LEN_OLD_STRINGS) SlErrorCorrupt("Invalid old name length");
SlArray(&_old_name_array[LEN_OLD_STRINGS * index], SlGetFieldLength(), SLE_UINT8);
/* Make sure the old name is null terminated */
_old_name_array[LEN_OLD_STRINGS * index + LEN_OLD_STRINGS - 1] = '\0';
}
}
/** Chunk handlers related to strings. */
extern const ChunkHandler _name_chunk_handlers[] = {
{ 'NAME', NULL, Load_NAME, NULL, NULL, CH_ARRAY | CH_LAST},
};
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