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Location: cpp/openttd-patchpack/source/src/base_media_func.h - annotation
r13177:b124129e2270
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(svn r17694) -Codechange: don't break $ to two lines in squirrel_export.awk
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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 base_media_func.h Generic function implementations for base data (graphics, sounds). */
#include "base_media_base.h"
#include "string_func.h"
#include "ini_type.h"
template <class Tbase_set> /* static */ const char *BaseMedia<Tbase_set>::ini_set;
template <class Tbase_set> /* static */ const Tbase_set *BaseMedia<Tbase_set>::used_set;
template <class Tbase_set> /* static */ Tbase_set *BaseMedia<Tbase_set>::available_sets;
/**
* Try to read a single piece of metadata and return false if it doesn't exist.
* @param name the name of the item to fetch.
*/
#define fetch_metadata(name) \
item = metadata->GetItem(name, false); \
if (item == NULL || strlen(item->value) == 0) { \
DEBUG(grf, 0, "Base " SET_TYPE "set detail loading: %s field missing", name); \
return false; \
}
template <class T, size_t Tnum_files>
bool BaseSet<T, Tnum_files>::FillSetDetails(IniFile *ini, const char *path)
{
memset(this, 0, sizeof(*this));
IniGroup *metadata = ini->GetGroup("metadata");
IniItem *item;
fetch_metadata("name");
this->name = strdup(item->value);
fetch_metadata("description");
this->description = strdup(item->value);
fetch_metadata("shortname");
for (uint i = 0; item->value[i] != '\0' && i < 4; i++) {
this->shortname |= ((uint8)item->value[i]) << (i * 8);
}
fetch_metadata("version");
this->version = atoi(item->value);
/* For each of the file types we want to find the file, MD5 checksums and warning messages. */
IniGroup *files = ini->GetGroup("files");
IniGroup *md5s = ini->GetGroup("md5s");
IniGroup *origin = ini->GetGroup("origin");
for (uint i = 0; i < Tnum_files; i++) {
MD5File *file = &this->files[i];
/* Find the filename first. */
item = files->GetItem(BaseSet<T, Tnum_files>::file_names[i], false);
if (item == NULL) {
DEBUG(grf, 0, "No " SET_TYPE " file for: %s", BaseSet<T, Tnum_files>::file_names[i]);
return false;
}
const char *filename = item->value;
file->filename = str_fmt("%s%s", path, filename);
/* Then find the MD5 checksum */
item = md5s->GetItem(filename, false);
if (item == NULL) {
DEBUG(grf, 0, "No MD5 checksum specified for: %s", filename);
return false;
}
char *c = item->value;
for (uint i = 0; i < sizeof(file->hash) * 2; i++, c++) {
uint j;
if ('0' <= *c && *c <= '9') {
j = *c - '0';
} else if ('a' <= *c && *c <= 'f') {
j = *c - 'a' + 10;
} else if ('A' <= *c && *c <= 'F') {
j = *c - 'A' + 10;
} else {
DEBUG(grf, 0, "Malformed MD5 checksum specified for: %s", filename);
return false;
}
if (i % 2 == 0) {
file->hash[i / 2] = j << 4;
} else {
file->hash[i / 2] |= j;
}
}
/* Then find the warning message when the file's missing */
item = origin->GetItem(filename, false);
if (item == NULL) item = origin->GetItem("default", false);
if (item == NULL) {
DEBUG(grf, 1, "No origin warning message specified for: %s", filename);
file->missing_warning = strdup("");
} else {
file->missing_warning = strdup(item->value);
}
switch (file->CheckMD5()) {
case MD5File::CR_MATCH:
this->valid_files++;
/* FALL THROUGH */
case MD5File::CR_MISMATCH:
this->found_files++;
break;
case MD5File::CR_NO_FILE:
break;
}
}
return true;
}
template <class Tbase_set>
bool BaseMedia<Tbase_set>::AddFile(const char *filename, size_t basepath_length)
{
bool ret = false;
DEBUG(grf, 1, "Checking %s for base " SET_TYPE " set", filename);
Tbase_set *set = new Tbase_set();;
IniFile *ini = new IniFile();
ini->LoadFromDisk(filename);
char *path = strdup(filename + basepath_length);
char *psep = strrchr(path, PATHSEPCHAR);
if (psep != NULL) {
psep[1] = '\0';
} else {
*path = '\0';
}
if (set->FillSetDetails(ini, path)) {
Tbase_set *duplicate = NULL;
for (Tbase_set *c = BaseMedia<Tbase_set>::available_sets; c != NULL; c = c->next) {
if (strcmp(c->name, set->name) == 0 || c->shortname == set->shortname) {
duplicate = c;
break;
}
}
if (duplicate != NULL) {
/* The more complete set takes precedence over the version number. */
if ((duplicate->valid_files == set->valid_files && duplicate->version >= set->version) ||
duplicate->valid_files > set->valid_files) {
DEBUG(grf, 1, "Not adding %s (%i) as base " SET_TYPE " set (duplicate)", set->name, set->version);
delete set;
} else {
Tbase_set **prev = &BaseMedia<Tbase_set>::available_sets;
while (*prev != duplicate) prev = &(*prev)->next;
*prev = set;
set->next = duplicate->next;
/* don't allow recursive delete of all remaining items */
duplicate->next = NULL;
/* If the duplicate set is currently used (due to rescanning this can happen)
* update the currently used set to the new one. This will 'lie' about the
* version number until a new game is started which isn't a big problem */
if (BaseMedia<Tbase_set>::used_set == duplicate) BaseMedia<Tbase_set>::used_set = set;
DEBUG(grf, 1, "Removing %s (%i) as base " SET_TYPE " set (duplicate)", duplicate->name, duplicate->version);
delete duplicate;
ret = true;
}
} else {
Tbase_set **last = &BaseMedia<Tbase_set>::available_sets;
while (*last != NULL) last = &(*last)->next;
*last = set;
ret = true;
}
if (ret) {
DEBUG(grf, 1, "Adding %s (%i) as base " SET_TYPE " set", set->name, set->version);
}
} else {
delete set;
}
free(path);
delete ini;
return ret;
}
template <class Tbase_set>
/* static */ bool BaseMedia<Tbase_set>::SetSet(const char *name)
{
extern void CheckExternalFiles();
if (StrEmpty(name)) {
if (!BaseMedia<Tbase_set>::DetermineBestSet()) return false;
CheckExternalFiles();
return true;
}
for (const Tbase_set *s = BaseMedia<Tbase_set>::available_sets; s != NULL; s = s->next) {
if (strcmp(name, s->name) == 0) {
BaseMedia<Tbase_set>::used_set = s;
CheckExternalFiles();
return true;
}
}
return false;
}
template <class Tbase_set>
/* static */ char *BaseMedia<Tbase_set>::GetSetsList(char *p, const char *last)
{
p += seprintf(p, last, "List of " SET_TYPE " sets:\n");
for (const Tbase_set *s = BaseMedia<Tbase_set>::available_sets; s != NULL; s = s->next) {
p += seprintf(p, last, "%18s: %s", s->name, s->description);
int invalid = s->GetNumInvalid();
if (invalid != 0) {
int missing = s->GetNumMissing();
if (missing == 0) {
p += seprintf(p, last, " (%i corrupt file%s)\n", invalid, invalid == 1 ? "" : "s");
} else {
p += seprintf(p, last, " (unuseable: %i missing file%s)\n", missing, missing == 1 ? "" : "s");
}
} else {
p += seprintf(p, last, "\n");
}
}
p += seprintf(p, last, "\n");
return p;
}
#if defined(ENABLE_NETWORK)
#include "network/network_content.h"
template <class Tbase_set>
/* static */ bool BaseMedia<Tbase_set>::HasSet(const ContentInfo *ci, bool md5sum)
{
for (const Tbase_set *s = BaseMedia<Tbase_set>::available_sets; s != NULL; s = s->next) {
if (s->GetNumMissing() != 0) continue;
if (s->shortname != ci->unique_id) continue;
if (!md5sum) return true;
byte md5[16];
memset(md5, 0, sizeof(md5));
for (uint i = 0; i < Tbase_set::NUM_FILES; i++) {
for (uint j = 0; j < sizeof(md5); j++) {
md5[j] ^= s->files[i].hash[j];
}
}
if (memcmp(md5, ci->md5sum, sizeof(md5)) == 0) return true;
}
return false;
}
#else
template <class Tbase_set>
/* static */ bool BaseMedia<Tbase_set>::HasSet(const ContentInfo *ci, bool md5sum)
{
return false;
}
#endif /* ENABLE_NETWORK */
template <class Tbase_set>
/* static */ int BaseMedia<Tbase_set>::GetNumSets()
{
int n = 0;
for (const Tbase_set *s = BaseMedia<Tbase_set>::available_sets; s != NULL; s = s->next) {
if (s != BaseMedia<Tbase_set>::used_set && s->GetNumMissing() != 0) continue;
n++;
}
return n;
}
template <class Tbase_set>
/* static */ int BaseMedia<Tbase_set>::GetIndexOfUsedSet()
{
int n = 0;
for (const Tbase_set *s = BaseMedia<Tbase_set>::available_sets; s != NULL; s = s->next) {
if (s == BaseMedia<Tbase_set>::used_set) return n;
if (s->GetNumMissing() != 0) continue;
n++;
}
return -1;
}
template <class Tbase_set>
/* static */ const Tbase_set *BaseMedia<Tbase_set>::GetSet(int index)
{
for (const Tbase_set *s = BaseMedia<Tbase_set>::available_sets; s != NULL; s = s->next) {
if (s != BaseMedia<Tbase_set>::used_set && s->GetNumMissing() != 0) continue;
if (index == 0) return s;
index--;
}
error("Base" SET_TYPE "::GetSet(): index %d out of range", index);
}
template <class Tbase_set>
/* static */ const Tbase_set *BaseMedia<Tbase_set>::GetUsedSet()
{
return BaseMedia<Tbase_set>::used_set;
}
/**
* Force instantiation of methods so we don't get linker errors.
* @param repl_type the type of the BaseMedia to instantiate
* @param set_type the type of the BaseSet to instantiate
*/
#define INSTANTIATE_BASE_MEDIA_METHODS(repl_type, set_type) \
template const char *repl_type::ini_set; \
template const char *repl_type::GetExtension(); \
template bool repl_type::AddFile(const char *filename, size_t pathlength); \
template bool repl_type::HasSet(const struct ContentInfo *ci, bool md5sum); \
template bool repl_type::SetSet(const char *name); \
template char *repl_type::GetSetsList(char *p, const char *last); \
template int repl_type::GetNumSets(); \
template int repl_type::GetIndexOfUsedSet(); \
template const set_type *repl_type::GetSet(int index); \
template const set_type *repl_type::GetUsedSet(); \
template bool repl_type::DetermineBestSet();
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