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Location: cpp/openttd-patchpack/source/newgrf_config.c - annotation
r5335:ce46409bbae6
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(svn r7499) WebTranslator2 update to 2006-12-15 10:49:50
esperanto - 35 fixed, 2 changed by LaPingvino (37)
slovak - 1 fixed by lengyel (1)
turkish - 5 fixed by jnmbk (5)
esperanto - 35 fixed, 2 changed by LaPingvino (37)
slovak - 1 fixed by lengyel (1)
turkish - 5 fixed by jnmbk (5)
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#include "stdafx.h"
#include "openttd.h"
#include "functions.h"
#include "macros.h"
#include "debug.h"
#include "variables.h"
#include "string.h"
#include "saveload.h"
#include "md5.h"
#include "newgrf.h"
#include "newgrf_config.h"
#include "fileio.h"
#include "fios.h"
#include <sys/types.h>
#include <sys/stat.h>
#ifdef WIN32
# include <io.h>
#else
# include <unistd.h>
# include <dirent.h>
#endif /* WIN32 */
GRFConfig *_all_grfs;
GRFConfig *_grfconfig;
GRFConfig *_grfconfig_newgame;
GRFConfig *_grfconfig_static;
/* Calculate the MD5 Sum for a GRF */
static bool CalcGRFMD5Sum(GRFConfig *config)
{
FILE *f;
char filename[MAX_PATH];
md5_state_t md5state;
md5_byte_t buffer[1024];
size_t len;
/* open the file */
snprintf(filename, lengthof(filename), "%s%s", _paths.data_dir, config->filename);
f = fopen(filename, "rb");
if (f == NULL) return false;
/* calculate md5sum */
md5_init(&md5state);
while ((len = fread(buffer, 1, sizeof(buffer), f)) != 0) {
md5_append(&md5state, buffer, len);
}
md5_finish(&md5state, config->md5sum);
fclose(f);
return true;
}
/* Find the GRFID and calculate the md5sum */
bool FillGRFDetails(GRFConfig *config, bool is_static)
{
if (!FioCheckFileExists(config->filename)) {
SETBIT(config->flags, GCF_NOT_FOUND);
return false;
}
/* Find and load the Action 8 information */
/* 62 is the last file slot before sample.cat.
* Should perhaps be some "don't care" value */
LoadNewGRFFile(config, 62, is_static ? GLS_SAFETYSCAN : GLS_FILESCAN);
/* GCF_UNSAFE is set if GLS_SAFETYSCAN finds unsafe actions */
if (HASBIT(config->flags, GCF_UNSAFE)) return false;
/* Skip if the grfid is 0 (not read) or 0xFFFFFFFF (ttdp system grf) */
if (config->grfid == 0 || config->grfid == 0xFFFFFFFF) return false;
return CalcGRFMD5Sum(config);
}
void ClearGRFConfig(GRFConfig *config)
{
free(config->filename);
free(config->name);
free(config->info);
free(config);
}
/* Clear a GRF Config list */
void ClearGRFConfigList(GRFConfig *config)
{
GRFConfig *c, *next;
for (c = config; c != NULL; c = next) {
next = c->next;
ClearGRFConfig(c);
}
}
/* Copy a GRF Config list */
static GRFConfig **CopyGRFConfigList(GRFConfig **dst, GRFConfig *src)
{
GRFConfig *c;
for (; src != NULL; src = src->next) {
c = calloc(1, sizeof(*c));
*c = *src;
c->filename = strdup(src->filename);
if (src->name != NULL) c->name = strdup(src->name);
if (src->info != NULL) c->info = strdup(src->info);
*dst = c;
dst = &c->next;
}
return dst;
}
/* Reset the current GRF Config to either blank or newgame settings */
void ResetGRFConfig(bool defaults)
{
GRFConfig **c = &_grfconfig;
ClearGRFConfigList(_grfconfig);
_grfconfig = NULL;
if (defaults) c = CopyGRFConfigList(c, _grfconfig_newgame);
CopyGRFConfigList(c, _grfconfig_static);
}
/* Check if all GRFs in the GRF Config can be loaded */
bool IsGoodGRFConfigList(void)
{
bool res = true;
GRFConfig *c;
for (c = _grfconfig; c != NULL; c = c->next) {
const GRFConfig *f = FindGRFConfig(c->grfid, c->md5sum);
if (f == NULL) {
char buf[512], *p = buf;
uint i;
p += snprintf(p, lastof(buf) - p, "Couldn't find NewGRF %08X (%s) checksum ", BSWAP32(c->grfid), c->filename);
for (i = 0; i < lengthof(c->md5sum); i++) {
p += snprintf(p, lastof(buf) - p, "%02X", c->md5sum[i]);
}
ShowInfo(buf);
res = false;
} else {
DEBUG(grf, 1) ("[GRF] Loading GRF %08X from %s", BSWAP32(c->grfid), f->filename);
c->filename = strdup(f->filename);
c->name = strdup(f->name);
c->info = strdup(f->info);
}
}
return res;
}
extern bool FiosIsValidFile(const char *path, const struct dirent *ent, struct stat *sb);
/* Scan a path for NewGRFs */
static uint ScanPath(const char *path)
{
uint num = 0;
struct stat sb;
struct dirent *dirent;
DIR *dir;
GRFConfig *c;
if ((dir = opendir(path)) == NULL) return 0;
while ((dirent = readdir(dir)) != NULL) {
const char *d_name = FS2OTTD(dirent->d_name);
char filename[MAX_PATH];
if (!FiosIsValidFile(path, dirent, &sb)) continue;
snprintf(filename, lengthof(filename), "%s" PATHSEP "%s", path, d_name);
if (sb.st_mode & S_IFDIR) {
/* Directory */
if (strcmp(d_name, ".") == 0 || strcmp(d_name, "..") == 0) continue;
num += ScanPath(filename);
} else if (sb.st_mode & S_IFREG) {
/* File */
char *ext = strrchr(filename, '.');
char *file = filename + strlen(_paths.data_dir) + 1; // Crop base path
/* If no extension or extension isn't .grf, skip the file */
if (ext == NULL) continue;
if (strcasecmp(ext, ".grf") != 0) continue;
c = calloc(1, sizeof(*c));
c->filename = strdup(file);
if (FillGRFDetails(c, false)) {
if (_all_grfs == NULL) {
_all_grfs = c;
} else {
/* Insert file into list at a position determined by its
* name, so the list is sorted as we go along */
GRFConfig **pd, *d;
for (pd = &_all_grfs; (d = *pd) != NULL; pd = &d->next) {
if (strcasecmp(c->name, d->name) <= 0) break;
}
c->next = d;
*pd = c;
}
num++;
} else {
/* File couldn't be opened, or is either not a NewGRF or is a
* 'system' NewGRF, so forget about it. */
free(c->filename);
free(c->name);
free(c->info);
free(c);
}
}
}
closedir(dir);
return num;
}
/* Scan for all NewGRFs */
void ScanNewGRFFiles(void)
{
uint num;
ClearGRFConfigList(_all_grfs);
_all_grfs = NULL;
DEBUG(grf, 1) ("[GRF] Scanning for NewGRFs");
num = ScanPath(_paths.data_dir);
DEBUG(grf, 1) ("[GRF] Scan complete, found %d files", num);
}
/* Find a NewGRF in the scanned list */
const GRFConfig *FindGRFConfig(uint32 grfid, uint8 *md5sum)
{
GRFConfig *c;
static const uint8 blanksum[sizeof(c->md5sum)] = { 0 };
for (c = _all_grfs; c != NULL; c = c->next) {
if (c->grfid == grfid) {
if (memcmp(blanksum, c->md5sum, sizeof(c->md5sum)) == 0) CalcGRFMD5Sum(c);
if (memcmp(md5sum, c->md5sum, sizeof(c->md5sum)) == 0) return c;
}
}
return NULL;
}
/* Retrieve a NewGRF from the current config by its grfid */
GRFConfig *GetGRFConfig(uint32 grfid)
{
GRFConfig *c;
for (c = _grfconfig; c != NULL; c = c->next) {
if (c->grfid == grfid) return c;
}
return NULL;
}
/* Build a space separated list of parameters, and terminate */
char *GRFBuildParamList(char *dst, const GRFConfig *c, const char *last)
{
uint i;
/* Return an empty string if there are no parameters */
if (c->num_params == 0) return strecpy(dst, "", last);
for (i = 0; i < c->num_params; i++) {
if (i > 0) dst = strecpy(dst, " ", last);
dst += snprintf(dst, last - dst, "%d", c->param[i]);
}
return dst;
}
static const SaveLoad _grfconfig_desc[] = {
SLE_STR(GRFConfig, filename, SLE_STR, 0x40),
SLE_VAR(GRFConfig, grfid, SLE_UINT32),
SLE_ARR(GRFConfig, md5sum, SLE_UINT8, 16),
SLE_ARR(GRFConfig, param, SLE_UINT32, 0x80),
SLE_VAR(GRFConfig, num_params, SLE_UINT8),
SLE_END()
};
static void Save_NGRF(void)
{
GRFConfig *c;
int index = 0;
for (c = _grfconfig; c != NULL; c = c->next) {
if (HASBIT(c->flags, GCF_STATIC)) continue;
SlSetArrayIndex(index++);
SlObject(c, _grfconfig_desc);
}
}
static void Load_NGRF(void)
{
GRFConfig *first = NULL;
GRFConfig **last = &first;
while (SlIterateArray() != -1) {
GRFConfig *c = calloc(1, sizeof(*c));
SlObject(c, _grfconfig_desc);
/* Append our configuration to the list */
*last = c;
last = &c->next;
}
/* Append static NewGRF configuration */
CopyGRFConfigList(last, _grfconfig_static);
ClearGRFConfigList(_grfconfig);
_grfconfig = first;
}
const ChunkHandler _newgrf_chunk_handlers[] = {
{ 'NGRF', Save_NGRF, Load_NGRF, CH_ARRAY | CH_LAST }
};
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