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|
/* ScummVM - Graphic Adventure Engine
*
* ScummVM is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program 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; either version 2
* of the License, or (at your option) any later version.
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*
*/
// Disable symbol overrides for FILE as that is used in FLAC headers
#define FORBIDDEN_SYMBOL_EXCEPTION_FILE
#include "common/str.h"
#include "common/util.h"
//#include <NDS/ARM9/console.h> //basic print funcionality
#include "backends/fs/ds/ds-fs.h"
#include "backends/fs/stdiostream.h"
#include "dsmain.h"
#include "fat/gba_nds_fat.h"
namespace DS {
//////////////////////////////////////////////////////////////
// DSFileSystemNode - Flash ROM file system using Zip files //
//////////////////////////////////////////////////////////////
ZipFile* DSFileSystemNode::_zipFile = NULL; // FIXME: Avoid non-const global vars
char currentDir[128]; // FIXME: Avoid non-const global vars
bool readPastEndOfFile = false; // FIXME: Avoid non-const global vars
enum {
WRITE_BUFFER_SIZE = 512
};
DSFileSystemNode::DSFileSystemNode() {
_displayName = "ds:/";
_path = "ds:/";
_isValid = true;
_isDirectory = true;
_path = "ds:/";
/* if (!_archive) {
_archive = (GBFS_FILE *) find_first_gbfs_file(scummdata);
if (!_archive) consolePrintf("No GBFS archive found!\n");
}*/
if (!_zipFile) {
_zipFile = new ZipFile();
}
}
DSFileSystemNode::DSFileSystemNode(const Common::String& path) {
// consolePrintf("--%s ",path.c_str());
int lastSlash = 3;
for (int r = 0; r < (int) path.size() - 1; r++) {
if (path[r] == '\\') {
lastSlash = r;
}
}
_displayName = Common::String(path.c_str() + lastSlash + 1);
_path = path;
// _isValid = true;
// _isDirectory = false;
const char *pathStr = path.c_str();
if (path.hasPrefix("ds:/")) {
pathStr += 4;
}
if (*pathStr == '\0') {
_isValid = true;
_isDirectory = true;
return;
}
_zipFile->setAllFilesVisible(true);
if (_zipFile->findFile(pathStr)) {
_isValid = true;
_isDirectory = _zipFile->isDirectory();
} else {
_isValid = false;
_isDirectory = false;
}
_zipFile->setAllFilesVisible(false);
// consolePrintf("%s - Found: %d, Dir: %d\n", pathStr, _isValid, _isDirectory);
}
DSFileSystemNode::DSFileSystemNode(const Common::String& path, bool isDir) {
// consolePrintf("--%s ",path.c_str());
int lastSlash = 3;
for (int r = 0; r < (int) path.size() - 1; r++) {
if (path[r] == '\\') {
lastSlash = r;
}
}
_displayName = Common::String(path.c_str() + lastSlash + 1);
_path = path;
_isValid = true;
_isDirectory = isDir;
// consolePrintf("Found: %d, Dir: %d\n", _isValid, _isDirectory);
}
DSFileSystemNode::DSFileSystemNode(const DSFileSystemNode *node) {
//TODO: not implemented?
}
AbstractFSNode *DSFileSystemNode::getChild(const Common::String& n) const {
if (_path.lastChar() == '\\') {
return new DSFileSystemNode(_path + n);
} else {
return new DSFileSystemNode(_path + "\\" + n);
}
return NULL;
}
bool DSFileSystemNode::getChildren(AbstractFSList &dirList, ListMode mode, bool hidden) const {
// consolePrintf("Listdir\n");
// consolePrintf("Directory\n");
//TODO: honor the hidden flag
// consolePrintf("This dir: %s\n", _path.c_str());
if (_path.hasPrefix("ds:/")) {
if (_path.size() > 4) {
_zipFile->changeDirectory(_path.c_str() + 4);
} else {
_zipFile->changeToRoot();
/* // This is the root dir, so add the RAM folder
DSFileSystemNode *dsfsn = new DSFileSystemNode("ds:/ram");
dsfsn->_isDirectory = true;
dirList->push_back(wrap(dsfsn));
*/
}
} else {
_zipFile->changeDirectory(_path.c_str());
}
if (_zipFile->restartFile()) {
do {
char n[128];
_zipFile->getFileName(n);
// consolePrintf("file: %s\n", n);
if ( (_zipFile->isDirectory() && ((mode == Common::FSNode::kListDirectoriesOnly) || (mode == Common::FSNode::kListAll)) )
|| (!_zipFile->isDirectory() && ((mode == Common::FSNode::kListFilesOnly) || (mode == Common::FSNode::kListAll)) ) )
{
DSFileSystemNode *dsfsn = new DSFileSystemNode("ds:/" + Common::String(n), _zipFile->isDirectory());
dsfsn->_isDirectory = _zipFile->isDirectory();
dirList.push_back((dsfsn));
}
} while (_zipFile->skipFile());
}
return true;
}
AbstractFSNode *DSFileSystemNode::getParent() const {
// consolePrintf("parent\n");
DSFileSystemNode *p;
if (_path != "ds:/") {
const char *path = (const char *)_path.c_str();
int lastSlash = 4;
for (uint r = 4; r < _path.size(); r++) {
if (path[r] == '\\') {
lastSlash = r;
}
}
p = new DSFileSystemNode(Common::String(path, lastSlash));
p->_isDirectory = true;
} else {
p = new DSFileSystemNode();
}
return p;
}
Common::SeekableReadStream *DSFileSystemNode::createReadStream() {
return DSFileStream::makeFromPath(getPath(), false);
}
Common::WriteStream *DSFileSystemNode::createWriteStream() {
Common::WriteStream *stream = DSFileStream::makeFromPath(getPath(), true);
return Common::wrapBufferedWriteStream(stream, WRITE_BUFFER_SIZE, DisposeAfterUse::YES);
}
//////////////////////////////////////////////////////////////////////////
// GBAMPFileSystemNode - File system using GBA Movie Player and CF card //
//////////////////////////////////////////////////////////////////////////
GBAMPFileSystemNode::GBAMPFileSystemNode() {
_displayName = "mp:/";
_path = "mp:/";
_isValid = false;
_isDirectory = true;
}
GBAMPFileSystemNode::GBAMPFileSystemNode(const Common::String& path) {
// consolePrintf("'%s'",path.c_str());
int lastSlash = 3;
for (int r = 0; r < (int) path.size() - 1; r++) {
if ((path[r] == '\\') || (path[r] == '/')) {
lastSlash = r;
}
}
if (path == "mp:/") {
// This is the root directory
_isDirectory = true;
_isValid = false; // Old code returned false here, but I'm not sure why
} else {
char check[128];
memset(check, 0, 128);
if (path.size() > 4 && path.hasPrefix("mp:/")) {
// Files which start with mp:/
// Clear the filename to 128 bytes, because a libfat bug occasionally tries to read in this area.
strcpy(check, path.c_str() + 3);
} else {
// Clear the filename to 128 bytes, because a libfat bug occationally tries to read in this area.
strcpy(check, path.c_str());
}
// Remove terminating slash - FileExists fails without this
if (check[strlen(check) - 1] == '/') {
check[strlen(check) - 1] = 0;
}
int fileOrDir = FAT_FileExists(check);
_isDirectory = fileOrDir == FT_DIR;
_isValid = fileOrDir == FT_FILE;
}
// consolePrintf("Path: %s \n", check);
_displayName = Common::String(path.c_str() + lastSlash + 1);
_path = path;
}
GBAMPFileSystemNode::GBAMPFileSystemNode(const Common::String& path, bool isDir) {
//consolePrintf("'%s'",path.c_str());
int lastSlash = 3;
for (int r = 0; r < (int) path.size() - 1; r++) {
if ((path[r] == '\\') || (path[r] == '/')) {
lastSlash = r;
}
}
_displayName = Common::String(path.c_str() + lastSlash + 1);
_path = path;
_isValid = true;
_isDirectory = isDir;
}
GBAMPFileSystemNode::GBAMPFileSystemNode(const GBAMPFileSystemNode *node) {
//TODO: not implemented?
}
AbstractFSNode *GBAMPFileSystemNode::getChild(const Common::String& n) const {
if (_path.lastChar() == '\\') {
return new GBAMPFileSystemNode(_path + n);
} else {
return new GBAMPFileSystemNode(_path + "\\" + n);
}
return NULL;
}
bool GBAMPFileSystemNode::getChildren(AbstractFSList& dirList, ListMode mode, bool hidden) const {
// consolePrintf("Listdir\n");
//TODO: honor the hidden flag
enum { TYPE_NO_MORE = 0, TYPE_FILE = 1, TYPE_DIR = 2 };
char temp[128], fname[256], *path, *pathTemp;
strcpy(temp, _path.c_str());
path = temp + 3;
pathTemp = path;
while (*pathTemp) {
if (*pathTemp == '\\') {
*pathTemp = '/';
}
pathTemp++;
}
// consolePrintf("This dir: %s\n", path);
FAT_chdir(path);
int entryType = FAT_FindFirstFileLFN(fname);
while (entryType != TYPE_NO_MORE) {
if ( ((entryType == TYPE_DIR) && ((mode == Common::FSNode::kListDirectoriesOnly) || (mode == Common::FSNode::kListAll)))
|| ((entryType == TYPE_FILE) && ((mode == Common::FSNode::kListFilesOnly) || (mode == Common::FSNode::kListAll))) ) {
GBAMPFileSystemNode *dsfsn;
//consolePrintf("Fname: %s\n", fname);
if (strcmp(fname, ".") && strcmp(fname, "..")) {
if (!strcmp(path, "/")) {
dsfsn = new GBAMPFileSystemNode("mp:" + Common::String(path) + Common::String(fname), entryType == TYPE_DIR);
} else {
dsfsn = new GBAMPFileSystemNode("mp:" + Common::String(path) + Common::String("/") + Common::String(fname), entryType == TYPE_DIR);
}
// dsfsn->_isDirectory = entryType == DIR;
dirList.push_back((dsfsn));
}
} else {
// consolePrintf("Skipping %s\n", fname);
}
entryType = FAT_FindNextFileLFN(fname);
}
// consolePrintf("No more");
FAT_chdir("/");
return true;
}
AbstractFSNode *GBAMPFileSystemNode::getParent() const {
// consolePrintf("parent\n");
GBAMPFileSystemNode *p;
if (_path != "mp:/") {
const char *path = (const char *)_path.c_str();
int lastSlash = 4;
for (uint r = 4; r < strlen(path); r++) {
if (path[r] == '/') {
lastSlash = r;
}
}
p = new GBAMPFileSystemNode(Common::String(path, lastSlash));
p->_isDirectory = true;
} else {
p = new GBAMPFileSystemNode();
}
return p;
}
Common::SeekableReadStream *GBAMPFileSystemNode::createReadStream() {
// consolePrintf("Opening: %s\n", getPath().c_str());
if (!strncmp(getPath().c_str(), "mp:/", 4)) {
return DSFileStream::makeFromPath(getPath().c_str() + 3, false);
} else {
return DSFileStream::makeFromPath(getPath(), false);
}
}
Common::WriteStream *GBAMPFileSystemNode::createWriteStream() {
Common::WriteStream *stream = DSFileStream::makeFromPath(getPath(), true);
return Common::wrapBufferedWriteStream(stream, WRITE_BUFFER_SIZE, DisposeAfterUse::YES);
}
DSFileStream::DSFileStream(void *handle) : _handle(handle) {
assert(handle);
}
DSFileStream::~DSFileStream() {
std_fclose((FILE *)_handle);
}
bool DSFileStream::err() const {
return std_ferror((FILE *)_handle) != 0;
}
void DSFileStream::clearErr() {
std_clearerr((FILE *)_handle);
}
bool DSFileStream::eos() const {
return std_feof((FILE *)_handle) != 0;
}
int32 DSFileStream::pos() const {
return std_ftell((FILE *)_handle);
}
int32 DSFileStream::size() const {
int32 oldPos = std_ftell((FILE *)_handle);
std_fseek((FILE *)_handle, 0, SEEK_END);
int32 length = std_ftell((FILE *)_handle);
std_fseek((FILE *)_handle, oldPos, SEEK_SET);
return length;
}
bool DSFileStream::seek(int32 offs, int whence) {
return std_fseek((FILE *)_handle, offs, whence) == 0;
}
uint32 DSFileStream::read(void *ptr, uint32 len) {
return std_fread(ptr, 1, len, (FILE *)_handle);
}
uint32 DSFileStream::write(const void *ptr, uint32 len) {
return std_fwrite(ptr, 1, len, (FILE *)_handle);
}
bool DSFileStream::flush() {
return std_fflush((FILE *)_handle) == 0;
}
DSFileStream *DSFileStream::makeFromPath(const Common::String &path, bool writeMode) {
FILE *handle = std_fopen(path.c_str(), writeMode ? "wb" : "rb");
if (handle)
return new DSFileStream(handle);
return 0;
}
// Stdio replacements
enum {
MAX_FILE_HANDLES = 32
};
static bool inited = false; // FIXME: Avoid non-const global vars
static DS::fileHandle s_handle[MAX_FILE_HANDLES]; // FIXME: Avoid non-const global vars
FILE *std_fopen(const char *name, const char *mode) {
if (!inited) {
for (int r = 0; r < MAX_FILE_HANDLES; r++) {
s_handle[r].used = false;
}
inited = true;
currentDir[0] = '\0';
}
char realName[MAXPATHLEN];
// Remove file system prefix
if ((name[0] == 'd') && (name[1] == 's') && (name[2] == ':') && (name[3] == '/')) {
strlcpy(realName, name + 4, MAXPATHLEN);
} else if ((name[0] == 'm') && (name[1] == 'p') && (name[2] == ':') && (name[3] == '/')) {
strlcpy(realName, name + 4, MAXPATHLEN);
} else {
strlcpy(realName, name, MAXPATHLEN);
}
// consolePrintf("Open file:");
// consolePrintf("'%s', [%s]", name, realName);
if (DS::isGBAMPAvailable()) {
FAT_chdir("/");
// Turn all back slashes into forward slashes for gba_nds_fat
char *p = realName;
while (*p) {
if (*p == '\\')
*p = '/';
p++;
}
FAT_FILE *result = FAT_fopen(realName, mode);
if (result == 0) {
// consolePrintf("Error code %d\n", result);
//consolePrintf("Opening file %s\n", realName);
} else {
// consolePrintf("Opened file %d\n", result);
}
// MT_memoryReport();
return (FILE *)result;
}
// Fail to open file for writing. It's in ROM!
// Allocate a file handle
int r = 0;
while (s_handle[r].used) {
r++;
assert(r < MAX_FILE_HANDLES);
}
char *data;
ZipFile *zip = DSFileSystemNode::getZip();
if (!zip) {
// consolePrintf("No zip yet!");
return NULL;
}
// Grab the data if it exists
zip->setAllFilesVisible(true);
if (currentDir[0] != 0) {
char nameWithPath[128];
sprintf(nameWithPath, "%s\\%s", currentDir, realName);
strcpy(realName, nameWithPath);
}
// consolePrintf("fopen(%s, %s)\n", realName, name);
if (zip->findFile(realName)) {
data = zip->getFile();
zip->setAllFilesVisible(false);
// Allocate a file handle
r = 0;
while (s_handle[r].used)
r++;
s_handle[r].used = true;
s_handle[r].pos = 0;
s_handle[r].data = data;
s_handle[r].size = zip->getFileSize();
// consolePrintf("Opened file %d: %s (%s) ", r, realName, name);
return &s_handle[r];
} else {
zip->setAllFilesVisible(false);
// consolePrintf("Not found: %s (%s) ", realName, name);
return NULL;
}
}
void std_fclose(FILE *handle) {
if (DS::isGBAMPAvailable()) {
FAT_fclose((FAT_FILE *) handle);
return;
}
handle->used = false;
}
size_t std_fread(void *ptr, size_t size, size_t numItems, FILE *handle) {
// consolePrintf("fread %d,%d %d ", size, numItems, ptr);
if (DS::isGBAMPAvailable()) {
readPastEndOfFile = false;
int bytes = FAT_fread(ptr, size, numItems, (FAT_FILE *) handle);
if (!FAT_feof((FAT_FILE *) handle)) {
return numItems;
} else {
// consolePrintf("Read past end of file: %d read out of %d\n", bytes / size, numItems);
if ((size_t)bytes != size * numItems) readPastEndOfFile = true;
return bytes / size;
}
return numItems;
}
if (handle->pos > handle->size)
numItems = 0;
else if ((int)(handle->pos + size * numItems) > handle->size)
numItems = (handle->size - handle->pos) / size;
// consolePrintf("read %d ", size * numItems);
memcpy(ptr, handle->data + handle->pos, size * numItems);
handle->pos += size * numItems;
return numItems;
}
size_t std_fwrite(const void *ptr, size_t size, size_t numItems, FILE *handle) {
if ((handle == stdin))
return 0;
if ((handle == stderr) || (handle == stdout)) {
#ifndef DISABLE_TEXT_CONSOLE
nocashMessage((char *) ptr);
// consolePrintf((char *) ptr);
#endif
return size;
}
//consolePrintf("fwrite size=%d\n", size * numItems);
if (DS::isGBAMPAvailable()) {
FAT_fwrite(ptr, size, numItems, (FAT_FILE *) handle);
return numItems;
int length = size * numItems;
int pos = 0;
while (pos < length) {
int amount = length > 512? 512: length;
FAT_fwrite(((char *) (ptr)) + pos, 1, amount, (FAT_FILE *) handle);
length -= amount;
pos += amount;
}
return numItems;
}
return 0;
}
bool std_feof(FILE *handle) {
// consolePrintf("feof ");
if (DS::isGBAMPAvailable()) {
return readPastEndOfFile && FAT_feof((FAT_FILE *) handle);
}
// consolePrintf("feof %s", handle->pos >= handle->size? "true": "false");
return handle->pos >= handle->size;
}
int std_fflush(FILE *handle) {
//FIXME: not implemented?
// consolePrintf("fflush ");
return 0;
}
long int std_ftell(FILE *handle) {
if (DS::isGBAMPAvailable()) {
return FAT_ftell((FAT_FILE *) handle);
}
return handle->pos;
}
int std_fseek(FILE *handle, long int offset, int whence) {
// consolePrintf("fseek %d %d ", offset, whence);
if (DS::isGBAMPAvailable()) {
return FAT_fseek((FAT_FILE *) handle, offset, whence);
}
switch (whence) {
case SEEK_CUR:
handle->pos += offset;
break;
case SEEK_SET:
handle->pos = offset;
break;
case SEEK_END:
handle->pos = handle->size + offset;
break;
default:
handle->pos = offset;
break;
}
return 0;
}
int std_ferror(FILE *handle) {
//FIXME: not implemented?
// consolePrintf("ferror ");
return readPastEndOfFile;
}
void std_clearerr(FILE *handle) {
//FIXME: not implemented?
readPastEndOfFile = false;
// consolePrintf("clearerr ");
}
} // namespace DS
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