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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.
*
* $URL$
* $Id$
*
*/
#ifdef WIN32
# include <direct.h>
#elif defined (__DC__)
# include <dc.h>
#endif
#include "common/archive.h"
#include "common/file.h"
#include "common/str.h"
#include "common/savefile.h"
#include "sci/sci.h"
#include "sci/include/engine.h"
#include "sci/engine/kernel.h"
#include <errno.h>
#include <sys/stat.h> // for S_IREAD/S_IWRITE
#define SCI_INVALID_FD -1
#define IS_VALID_FD(a) ((a) != SCI_INVALID_FD) /* Tests validity of a file descriptor */
// FIXME: rework sci_dir_t to use common/fs.h and remove these includes
#include <sys/types.h>
#ifndef _MSC_VER
#include <dirent.h>
#else
#include <io.h>
#endif
// FIXME: For chdir() etc.
#ifndef _MSC_VER
#include <unistd.h>
#endif
#ifdef WIN32
# define FO_BINARY "b"
#else
# define FO_BINARY ""
#endif
#ifdef UNIX
#include <fnmatch.h>
#include <sys/stat.h>
#endif
namespace Sci {
struct sci_dir_t {
#ifdef WIN32
long search;
struct _finddata_t fileinfo;
#else
DIR *dir;
char *mask_copy;
#endif
}; /* used by sci_find_first and friends */
void sci_init_dir(sci_dir_t *dirent);
/* Initializes an sci directory search structure
** Parameters: (sci_dir_t *) dirent: The entity to initialize
** Returns : (void)
** The entity is initialized to "empty" values, meaning that it can be
** used in subsequent sci_find_first/sci_find_next constructs. In no
** event should this function be used upon a structure which has been
** subjected to any of the other dirent calls.
*/
char *sci_find_first(sci_dir_t *dirent, const char *mask);
/* Finds the first file matching the specified file mask
** Parameters: (sci_dir_t *) dirent: Pointer to an unused dirent structure
** (const char *) mask: File mask to apply
** Returns : (char *) Name of the first matching file found, or NULL
*/
char *sci_find_next(sci_dir_t *dirent);
/* Finds the next file specified by an sci_dir initialized by sci_find_first()
** Parameters: (sci_dir_t *) dirent: Pointer to SCI dir entity
** Returns : (char *) Name of the next matching file, or NULL
*/
void sci_finish_find(sci_dir_t *dirent);
/* Completes an 'sci_find_first/next' procedure
** Parameters: (sci_dir_t *) dirent: Pointer to the dirent used
** Returns : (void)
** In the operation sequences
** sci_init_dir(x); sci_finish_find(x);
** and
** sci_finish_find(x); sci_finish_find(x);
** the second operation is guaranteed to be a no-op.
*/
FILE *sci_fopen(const char *fname, const char *mode);
/* Opens a FILE* case-insensitively
** Parameters: (const char *) fname: Name of the file to open
** (const char *) mode: Mode to open it with
** Returns : (FILE *) A valid file handle, or NULL on failure
** Always refers to the cwd, cannot address subdirectories
*/
int sci_file_size(const char *fname);
/* Returns the filesize of a file
** Parameters: (const char *) fname: Name of file to get filesize of
** Returns : (int) filesize of the file, -1 on error
*/
#if defined(WIN32)
void sci_init_dir(sci_dir_t *dir) {
dir->search = -1;
}
char *sci_find_first(sci_dir_t *dir, const char *mask) {
dir->search = _findfirst(mask, &(dir->fileinfo));
if (dir->search != -1) {
if (dir->fileinfo.name == NULL) {
return NULL;
}
if (strcmp(dir->fileinfo.name, ".") == 0 ||
strcmp(dir->fileinfo.name, "..") == 0) {
if (sci_find_next(dir) == NULL) {
return NULL;
}
}
return dir->fileinfo.name;
} else {
switch (errno) {
case ENOENT: {
#ifdef _DEBUG
printf("_findfirst errno = ENOENT: no match\n");
if (mask)
printf(" in: %s\n", mask);
else
printf(" - searching in undefined directory\n");
#endif
break;
}
case EINVAL: {
printf("_findfirst errno = EINVAL: invalid filename\n");
break;
}
default:
printf("_findfirst errno = unknown (%d)", errno);
}
}
return NULL;
}
char *sci_find_next(sci_dir_t *dir) {
if (dir->search == -1)
return NULL;
if (_findnext(dir->search, &(dir->fileinfo)) < 0) {
_findclose(dir->search);
dir->search = -1;
return NULL;
}
if (strcmp(dir->fileinfo.name, ".") == 0 ||
strcmp(dir->fileinfo.name, "..") == 0) {
if (sci_find_next(dir) == NULL) {
return NULL;
}
}
return dir->fileinfo.name;
}
void sci_finish_find(sci_dir_t *dir) {
if (dir->search != -1) {
_findclose(dir->search);
dir->search = -1;
}
}
#else
void sci_init_dir(sci_dir_t *dir) {
dir->dir = NULL;
dir->mask_copy = NULL;
}
char *sci_find_first(sci_dir_t *dir, const char *mask) {
if (dir->dir)
closedir(dir->dir);
if (!(dir->dir = opendir("."))) {
sciprintf("%s, L%d: opendir(\".\") failed!\n", __FILE__, __LINE__);
return NULL;
}
dir->mask_copy = sci_strdup(mask);
return sci_find_next(dir);
}
#ifndef FNM_CASEFOLD
#define FNM_CASEFOLD 0
#warning "File searches will not be case-insensitive!"
#endif
char *sci_find_next(sci_dir_t *dir) {
struct dirent *match;
while ((match = readdir(dir->dir))) {
if (match->d_name[0] == '.')
continue;
if (!fnmatch(dir->mask_copy, match->d_name, FNM_CASEFOLD))
return match->d_name;
}
sci_finish_find(dir);
return NULL;
}
void sci_finish_find(sci_dir_t *dir) {
if (dir->dir) {
closedir(dir->dir);
dir->dir = NULL;
free(dir->mask_copy);
dir->mask_copy = NULL;
}
}
#endif
/* Returns the case-sensitive filename of a file.
** Expects *dir to be uninitialized and the caller to free it afterwards.
** Parameters: (const char *) fname: Name of file to get case-sensitive.
** (sci_dir_t *) dir: Directory to find file within.
** Returns : (char *) Case-sensitive filename of the file.
*/
Common::String _fcaseseek(const char *fname) {
// Expects *dir to be uninitialized and the caller to
// free it afterwards */
// Look up the file, ignoring case
Common::ArchiveMemberList files;
SearchMan.listMatchingMembers(files, fname);
for (Common::ArchiveMemberList::const_iterator x = files.begin(); x != files.end(); ++x) {
const Common::String name = (*x)->getName();
if (name.equalsIgnoreCase(fname))
return name;
}
return Common::String();
}
FILE *sci_fopen(const char *fname, const char *mode) {
Common::String name = _fcaseseek(fname);
FILE *file = NULL;
if (!name.empty())
file = fopen(name.c_str(), mode);
else if (strchr(mode, 'w'))
file = fopen(fname, mode);
return file;
}
int sci_file_size(const char *fname) {
struct stat fn_stat;
if (stat(fname, &fn_stat))
return -1;
return fn_stat.st_size;
}
static int _savegame_indices_nr = -1; // means 'uninitialized'
static struct _savegame_index_struct {
int id;
int date;
int time;
} _savegame_indices[MAX_SAVEGAME_NR];
// This assumes modern stream implementations. It may break on DOS.
/* Attempts to mirror a file by copying it from the resource firectory
** to the working directory. Returns NULL if the file didn't exist.
** Otherwise, the new file is then opened for reading or writing.
*/
static FILE *f_open_mirrored(EngineState *s, char *fname) {
debug(3, "f_open_mirrored(%s)", fname);
#if 0
Common::File file;
if (!file.open(fname))
return NULL;
int fsize = file.size();
if (fsize > 0) {
buf = (char *)sci_malloc(fsize);
file.read(buf, fsize);
}
file.close();
copy the file to a savegame -> only makes sense to perform this change
if we at the same time change the code for loading files to look among the
savestates, and also change *all* file writing code to write to savestates,
as it should
Also, we may have to change the filename when creating a matchin savegame,
e.g. prefix it with the target name
#endif
// FIXME: for now we just pretend this has failed
return 0;
}
#define _K_FILE_MODE_OPEN_OR_CREATE 0
#define _K_FILE_MODE_OPEN_OR_FAIL 1
#define _K_FILE_MODE_CREATE 2
void file_open(EngineState *s, char *filename, int mode) {
FILE *file = NULL;
SCIkdebug(SCIkFILE, "Opening file %s with mode %d\n", filename, mode);
if ((mode == _K_FILE_MODE_OPEN_OR_FAIL) || (mode == _K_FILE_MODE_OPEN_OR_CREATE)) {
file = sci_fopen(filename, "r" FO_BINARY "+"); // Attempt to open existing file
SCIkdebug(SCIkFILE, "Opening file %s with mode %d\n", filename, mode);
if (!file) {
SCIkdebug(SCIkFILE, "Failed. Attempting to copy from resource dir...\n");
file = f_open_mirrored(s, filename);
if (file)
SCIkdebug(SCIkFILE, "Success!\n");
else
SCIkdebug(SCIkFILE, "Not found.\n");
}
}
if ((!file) && ((mode == _K_FILE_MODE_OPEN_OR_CREATE) || (mode == _K_FILE_MODE_CREATE))) {
file = sci_fopen(filename, "w" FO_BINARY "+"); /* Attempt to create file */
SCIkdebug(SCIkFILE, "Creating file %s with mode %d\n", filename, mode);
}
if (!file) { // Failed
SCIkdebug(SCIkFILE, "file_open() failed\n");
s->r_acc = make_reg(0, 0xffff);
return;
}
uint retval = 0;
while ((retval < s->_fileHandles.size()) && s->_fileHandles[retval]._file)
retval++;
// Ignore _fileHandles[0]
if (retval < 1)
retval = 1;
if (retval >= s->_fileHandles.size()) { // Hit size limit => Allocate more space
s->_fileHandles.resize(retval + 1);
}
s->_fileHandles[retval]._file = file;
s->r_acc = make_reg(0, retval);
}
reg_t kFOpen(EngineState *s, int funct_nr, int argc, reg_t *argv) {
char *name = kernel_dereference_char_pointer(s, argv[0], 0);
int mode = UKPV(1);
file_open(s, name, mode);
debug(3, "kFOpen(%s,0x%x) -> %d", name, mode, s->r_acc.offset);
return s->r_acc;
}
static FILE *getFileFromHandle(EngineState *s, uint handle) {
if (handle == 0) {
SCIkwarn(SCIkERROR, "Attempt to use file handle 0\n");
return 0;
}
if ((handle >= s->_fileHandles.size()) || (s->_fileHandles[handle]._file == NULL)) {
SCIkwarn(SCIkERROR, "Attempt to use invalid/unused file handle %d\n", handle);
return 0;
}
return s->_fileHandles[handle]._file;
}
void file_close(EngineState *s, int handle) {
SCIkdebug(SCIkFILE, "Closing file %d\n", handle);
FILE *f = getFileFromHandle(s, handle);
if (!f)
return;
fclose(f);
s->_fileHandles[handle]._file = NULL;
}
reg_t kFClose(EngineState *s, int funct_nr, int argc, reg_t *argv) {
debug(3, "kFClose(%d)", UKPV(0));
file_close(s, UKPV(0));
return s->r_acc;
}
void fputs_wrapper(EngineState *s, int handle, int size, char *data) {
SCIkdebug(SCIkFILE, "FPuts'ing \"%s\" to handle %d\n", data, handle);
FILE *f = getFileFromHandle(s, handle);
if (f)
fwrite(data, 1, size, f);
}
void fwrite_wrapper(EngineState *s, int handle, char *data, int length) {
SCIkdebug(SCIkFILE, "fwrite()'ing \"%s\" to handle %d\n", data, handle);
FILE *f = getFileFromHandle(s, handle);
if (f)
fwrite(data, 1, length, f);
}
reg_t kFPuts(EngineState *s, int funct_nr, int argc, reg_t *argv) {
int handle = UKPV(0);
char *data = kernel_dereference_char_pointer(s, argv[1], 0);
fputs_wrapper(s, handle, strlen(data), data);
return s->r_acc;
}
static void fgets_wrapper(EngineState *s, char *dest, int maxsize, int handle) {
SCIkdebug(SCIkFILE, "FGets'ing %d bytes from handle %d\n", maxsize, handle);
FILE *f = getFileFromHandle(s, handle);
if (!f)
return;
fgets(dest, maxsize, f);
SCIkdebug(SCIkFILE, "FGets'ed \"%s\"\n", dest);
}
static void fread_wrapper(EngineState *s, char *dest, int bytes, int handle) {
SCIkdebug(SCIkFILE, "fread()'ing %d bytes from handle %d\n", bytes, handle);
FILE *f = getFileFromHandle(s, handle);
if (!f)
return;
s->r_acc = make_reg(0, fread(dest, 1, bytes, f));
}
static void fseek_wrapper(EngineState *s, int handle, int offset, int whence) {
FILE *f = getFileFromHandle(s, handle);
if (!f)
return;
s->r_acc = make_reg(0, fseek(f, offset, whence));
}
#define TEST_DIR_OR_QUIT(dir) if (!dir) { return NULL_REG; }
reg_t kFGets(EngineState *s, int funct_nr, int argc, reg_t *argv) {
char *dest = kernel_dereference_char_pointer(s, argv[0], 0);
int maxsize = UKPV(1);
int handle = UKPV(2);
debug(3, "kFGets(%d,%d)", handle, maxsize);
fgets_wrapper(s, dest, maxsize, handle);
return argv[0];
}
/* kGetCWD(address):
** Writes the cwd to the supplied address and returns the address in acc.
*/
reg_t kGetCWD(EngineState *s, int funct_nr, int argc, reg_t *argv) {
char *targetaddr = kernel_dereference_char_pointer(s, argv[0], 0);
getcwd(targetaddr, MAX_SAVE_DIR_SIZE - 1);
targetaddr[MAX_SAVE_DIR_SIZE - 1] = 0; // Terminate
debug(3, "kGetCWD() -> %s", targetaddr);
return argv[0];
}
void delete_savegame(EngineState *s, int savedir_nr) {
Common::String filename = ((Sci::SciEngine*)g_engine)->getSavegameName(savedir_nr);
sciprintf("Deleting savegame '%s'\n", filename.c_str());
Common::SaveFileManager *saveFileMan = g_engine->getSaveFileManager();
saveFileMan->removeSavefile(filename.c_str());
}
#define K_DEVICE_INFO_GET_DEVICE 0
#define K_DEVICE_INFO_GET_CURRENT_DEVICE 1
#define K_DEVICE_INFO_PATHS_EQUAL 2
#define K_DEVICE_INFO_IS_FLOPPY 3
#define K_DEVICE_INFO_GET_SAVECAT_NAME 7
#define K_DEVICE_INFO_GET_SAVEFILE_NAME 8
reg_t kDeviceInfo(EngineState *s, int funct_nr, int argc, reg_t *argv) {
int mode = UKPV(0);
char *game_prefix, *input_s, *output_s;
switch (mode) {
case K_DEVICE_INFO_GET_DEVICE:
input_s = kernel_dereference_char_pointer(s, argv[1], 0);
output_s = kernel_dereference_char_pointer(s, argv[2], 0);
assert(input_s != output_s);
strcpy(output_s, "/");
debug(3, "K_DEVICE_INFO_GET_DEVICE(%s) -> %s", input_s, output_s);
break;
case K_DEVICE_INFO_GET_CURRENT_DEVICE:
output_s = kernel_dereference_char_pointer(s, argv[1], 0);
strcpy(output_s, "/");
debug(3, "K_DEVICE_INFO_GET_CURRENT_DEVICE() -> %s", output_s);
break;
case K_DEVICE_INFO_PATHS_EQUAL: {
char *path1_s = kernel_dereference_char_pointer(s, argv[1], 0);
char *path2_s = kernel_dereference_char_pointer(s, argv[2], 0);
debug(3, "K_DEVICE_INFO_PATHS_EQUAL(%s,%s)", path1_s, path2_s);
return make_reg(0, Common::matchString(path2_s, path1_s, true));
}
break;
case K_DEVICE_INFO_IS_FLOPPY:
input_s = kernel_dereference_char_pointer(s, argv[1], 0);
debug(3, "K_DEVICE_INFO_IS_FLOPPY(%s)\n", input_s);
return NULL_REG; /* Never */
/* SCI uses these in a less-than-portable way to delete savegames.
** Read http://www-plan.cs.colorado.edu/creichen/freesci-logs/2005.10/log20051019.html
** for more information on our workaround for this.
*/
case K_DEVICE_INFO_GET_SAVECAT_NAME: {
output_s = kernel_dereference_char_pointer(s, argv[1], 0);
game_prefix = kernel_dereference_char_pointer(s, argv[2], 0);
sprintf(output_s, "__throwaway");
debug(3, "K_DEVICE_INFO_GET_SAVECAT_NAME(%s) -> %s", game_prefix, output_s);
}
break;
case K_DEVICE_INFO_GET_SAVEFILE_NAME: {
output_s = kernel_dereference_char_pointer(s, argv[1], 0);
game_prefix = kernel_dereference_char_pointer(s, argv[2], 0);
int savegame_id = UKPV(3);
sprintf(output_s, "__throwaway");
debug(3, "K_DEVICE_INFO_GET_SAVEFILE_NAME(%s,%d) -> %s", game_prefix, savegame_id, output_s);
delete_savegame(s, savegame_id);
}
break;
default:
SCIkwarn(SCIkERROR, "Unknown DeviceInfo() sub-command: %d\n", mode);
break;
}
return s->r_acc;
}
reg_t kGetSaveDir(EngineState *s, int funct_nr, int argc, reg_t *argv) {
return make_reg(s->sys_strings_segment, SYS_STRING_SAVEDIR);
}
reg_t kCheckFreeSpace(EngineState *s, int funct_nr, int argc, reg_t *argv) {
char *path = kernel_dereference_char_pointer(s, argv[0], 0);
debug(3, "kCheckFreeSpace(%s)", path);
// We simply always pretend that there is enough space.
// The alternative would be to write a big test file, which is not nice
// on systems where doing so is very slow.
return make_reg(0, 1);
}
static int _savegame_index_struct_compare(const void *a, const void *b) {
struct _savegame_index_struct *A = (struct _savegame_index_struct *)a;
struct _savegame_index_struct *B = (struct _savegame_index_struct *)b;
if (B->date != A->date)
return B->date - A->date;
return B->time - A->time;
}
static void update_savegame_indices() {
int i;
_savegame_indices_nr = 0;
Common::SaveFileManager *saveFileMan = g_engine->getSaveFileManager();
for (i = 0; i < MAX_SAVEGAME_NR; i++) {
Common::String filename = ((Sci::SciEngine*)g_engine)->getSavegameName(i);
Common::SeekableReadStream *in;
if ((in = saveFileMan->openForLoading(filename.c_str()))) {
SavegameMetadata meta;
if (!get_savegame_metadata(in, &meta)) {
// invalid
delete in;
continue;
}
delete in;
fprintf(stderr, "Savegame in %s file ok\n", filename.c_str());
_savegame_indices[_savegame_indices_nr].id = i;
_savegame_indices[_savegame_indices_nr].date = meta.savegame_date;
_savegame_indices[_savegame_indices_nr].time = meta.savegame_time;
_savegame_indices_nr++;
}
}
qsort(_savegame_indices, _savegame_indices_nr, sizeof(struct _savegame_index_struct), _savegame_index_struct_compare);
}
reg_t kCheckSaveGame(EngineState *s, int funct_nr, int argc, reg_t *argv) {
char *game_id = kernel_dereference_char_pointer(s, argv[0], 0);
int savedir_nr = UKPV(1);
debug(3, "kCheckSaveGame(%s, %d)", game_id, savedir_nr);
if (_savegame_indices_nr < 0) {
warning("Savegame index list not initialized");
update_savegame_indices();
}
savedir_nr = _savegame_indices[savedir_nr].id;
if (savedir_nr > MAX_SAVEGAME_NR - 1) {
return NULL_REG;
}
Common::SaveFileManager *saveFileMan = g_engine->getSaveFileManager();
Common::String filename = ((Sci::SciEngine*)g_engine)->getSavegameName(savedir_nr);
Common::SeekableReadStream *in;
if ((in = saveFileMan->openForLoading(filename.c_str()))) {
// found a savegame file
SavegameMetadata meta;
if (!get_savegame_metadata(in, &meta)) {
// invalid
s->r_acc = make_reg(0, 0);
} else {
s->r_acc = make_reg(0, 1);
}
delete in;
} else {
s->r_acc = make_reg(0, 1);
}
return s->r_acc;
}
reg_t kGetSaveFiles(EngineState *s, int funct_nr, int argc, reg_t *argv) {
char *game_id = kernel_dereference_char_pointer(s, argv[0], 0);
char *nametarget = kernel_dereference_char_pointer(s, argv[1], 0);
reg_t nametarget_base = argv[1];
reg_t *nameoffsets = kernel_dereference_reg_pointer(s, argv[2], 0);
int i;
debug(3, "kGetSaveFiles(%s,%s)", game_id, nametarget);
update_savegame_indices();
s->r_acc = NULL_REG;
Common::SaveFileManager *saveFileMan = g_engine->getSaveFileManager();
for (i = 0; i < _savegame_indices_nr; i++) {
Common::String filename = ((Sci::SciEngine*)g_engine)->getSavegameName(_savegame_indices[i].id);
Common::SeekableReadStream *in;
if ((in = saveFileMan->openForLoading(filename.c_str()))) {
// found a savegame file
SavegameMetadata meta;
if (!get_savegame_metadata(in, &meta)) {
// invalid
delete in;
continue;
}
char namebuf[SCI_MAX_SAVENAME_LENGTH]; // Save game name buffer
strncpy(namebuf, meta.savegame_name, SCI_MAX_SAVENAME_LENGTH);
namebuf[SCI_MAX_SAVENAME_LENGTH-1] = 0;
if (strlen(namebuf) > 0) {
if (namebuf[strlen(namebuf) - 1] == '\n')
namebuf[strlen(namebuf) - 1] = 0; // Remove trailing newline
*nameoffsets = s->r_acc; // Store savegame ID
++s->r_acc.offset; // Increase number of files found
nameoffsets++; // Make sure the next ID string address is written to the next pointer
strncpy(nametarget, namebuf, SCI_MAX_SAVENAME_LENGTH); // Copy identifier string
*(nametarget + SCI_MAX_SAVENAME_LENGTH - 1) = 0; // Make sure it's terminated
nametarget += SCI_MAX_SAVENAME_LENGTH; // Increase name offset pointer accordingly
nametarget_base.offset += SCI_MAX_SAVENAME_LENGTH;
}
delete in;
}
}
//free(gfname);
*nametarget = 0; // Terminate list
return s->r_acc;
}
reg_t kSaveGame(EngineState *s, int funct_nr, int argc, reg_t *argv) {
char *game_id = kernel_dereference_char_pointer(s, argv[0], 0);
int savedir_nr = UKPV(1);
int savedir_id; // Savegame ID, derived from savedir_nr and the savegame ID list
char *game_description = kernel_dereference_char_pointer(s, argv[2], 0);
char *version = argc > 3 ? strdup(kernel_dereference_char_pointer(s, argv[3], 0)) : NULL;
debug(3, "kSaveGame(%s,%d,%s,%s)", game_id, savedir_nr, game_description, version);
s->game_version = version;
update_savegame_indices();
fprintf(stderr, "savedir_nr = %d\n", savedir_nr);
if (savedir_nr >= 0 && savedir_nr < _savegame_indices_nr)
// Overwrite
savedir_id = _savegame_indices[savedir_nr].id;
else if (savedir_nr >= 0 && savedir_nr < MAX_SAVEGAME_NR) {
int i = 0;
fprintf(stderr, "searching for hole\n");
savedir_id = 0;
// First, look for holes
while (i < _savegame_indices_nr) {
if (_savegame_indices[i].id == savedir_id) {
++savedir_id;
i = 0;
} else ++i;
}
if (savedir_id >= MAX_SAVEGAME_NR) {
sciprintf("Internal error: Free savegame ID is %d, shouldn't happen!\n", savedir_id);
return NULL_REG;
}
// This loop terminates when savedir_id is not in [x | ex. n. _savegame_indices[n].id = x]
} else {
sciprintf("Savegame ID %d is not allowed!\n", savedir_nr);
return NULL_REG;
}
Common::String filename = ((Sci::SciEngine*)g_engine)->getSavegameName(savedir_id);
Common::SaveFileManager *saveFileMan = g_engine->getSaveFileManager();
Common::OutSaveFile *out;
if (!(out = saveFileMan->openForSaving(filename.c_str()))) {
sciprintf("Error opening savegame \"%s\" for writing\n", filename.c_str());
s->r_acc = NULL_REG;
return NULL_REG;
}
if (gamestate_save(s, out, game_description)) {
sciprintf("Saving the game failed.\n");
s->r_acc = NULL_REG;
} else {
out->finalize();
if (out->err()) {
delete out;
sciprintf("Writing the savegame failed.\n");
s->r_acc = NULL_REG;
} else {
delete out;
s->r_acc = make_reg(0, 1);
}
}
free(s->game_version);
s->game_version = NULL;
return s->r_acc;
}
reg_t kRestoreGame(EngineState *s, int funct_nr, int argc, reg_t *argv) {
char *game_id = kernel_dereference_char_pointer(s, argv[0], 0);
int savedir_nr = UKPV(1);
debug(3, "kRestoreGame(%s,%d)", game_id, savedir_nr);
if (_savegame_indices_nr < 0) {
warning("Savegame index list not initialized");
update_savegame_indices();
}
savedir_nr = _savegame_indices[savedir_nr].id;
if (savedir_nr > -1) {
Common::SaveFileManager *saveFileMan = g_engine->getSaveFileManager();
Common::String filename = ((Sci::SciEngine*)g_engine)->getSavegameName(savedir_nr);
Common::SeekableReadStream *in;
if ((in = saveFileMan->openForLoading(filename.c_str()))) {
// found a savegame file
EngineState *newstate = gamestate_restore(s, in);
delete in;
if (newstate) {
s->successor = newstate;
script_abort_flag = SCRIPT_ABORT_WITH_REPLAY; // Abort current game
s->execution_stack_pos = s->execution_stack_base;
} else {
s->r_acc = make_reg(0, 1);
sciprintf("Restoring failed (game_id = '%s').\n", game_id);
}
return s->r_acc;
}
}
s->r_acc = make_reg(0, 1);
sciprintf("Savegame #%d not found!\n", savedir_nr);
return s->r_acc;
}
reg_t kValidPath(EngineState *s, int funct_nr, int argc, reg_t *argv) {
char *pathname = kernel_dereference_char_pointer(s, argv[0], 0);
char cpath[MAXPATHLEN + 1];
getcwd(cpath, MAXPATHLEN + 1);
s->r_acc = make_reg(0, !chdir(pathname)); // Try to go there. If it works, return 1, 0 otherwise.
chdir(cpath);
debug(3, "kValidPath(%s) -> %d", pathname, s->r_acc.offset);
return s->r_acc;
}
#define K_FILEIO_OPEN 0
#define K_FILEIO_CLOSE 1
#define K_FILEIO_READ_RAW 2
#define K_FILEIO_WRITE_RAW 3
#define K_FILEIO_UNLINK 4
#define K_FILEIO_READ_STRING 5
#define K_FILEIO_WRITE_STRING 6
#define K_FILEIO_SEEK 7
#define K_FILEIO_FIND_FIRST 8
#define K_FILEIO_FIND_NEXT 9
#define K_FILEIO_STAT 10
class DirSeeker {
protected:
EngineState *_vm;
reg_t _outbuffer;
sci_dir_t _dir;
const char *write_filename_to_mem(const char *string);
public:
DirSeeker(EngineState *s) : _vm(s) {
_outbuffer = NULL_REG;
sci_init_dir(&_dir);
}
void first_file(const char *dir, char *mask, reg_t buffer);
void next_file();
};
const char *DirSeeker::write_filename_to_mem(const char *string) {
char *mem = kernel_dereference_char_pointer(_vm, _outbuffer, 0);
if (string) {
memset(mem, 0, 13);
strncpy(mem, string, 12);
}
return string;
}
void DirSeeker::next_file() {
if (write_filename_to_mem(sci_find_next(&_dir)))
_vm->r_acc = _outbuffer;
else
_vm->r_acc = NULL_REG;
}
void DirSeeker::first_file(const char *dir, char *mask, reg_t buffer) {
if (!buffer.segment) {
sciprintf("Warning: first_file(state,\"%s\",\"%s\", 0) invoked!\n", dir, mask);
_vm->r_acc = NULL_REG;
return;
}
if (strcmp(dir, ".")) {
sciprintf("%s L%d: Non-local first_file: Not implemented yet\n", __FILE__, __LINE__);
_vm->r_acc = NULL_REG;
return;
}
// Get rid of the old find structure
if (_outbuffer.segment)
sci_finish_find(&_dir);
_outbuffer = buffer;
if (write_filename_to_mem(sci_find_first(&_dir, mask)))
_vm->r_acc = _outbuffer;
else
_vm->r_acc = NULL_REG;
}
reg_t kFileIO(EngineState *s, int funct_nr, int argc, reg_t *argv) {
int func_nr = UKPV(0);
switch (func_nr) {
case K_FILEIO_OPEN : {
char *name = kernel_dereference_char_pointer(s, argv[1], 0);
int mode = UKPV(2);
file_open(s, name, mode);
debug(3, "K_FILEIO_OPEN(%s,0x%x) -> %d", name, mode, s->r_acc.offset);
break;
}
case K_FILEIO_CLOSE : {
int handle = UKPV(1);
debug(3, "K_FILEIO_CLOSE(%d)", handle);
file_close(s, handle);
break;
}
case K_FILEIO_READ_RAW : {
int handle = UKPV(1);
char *dest = kernel_dereference_char_pointer(s, argv[2], 0);
int size = UKPV(3);
debug(3, "K_FILEIO_READ_RAW(%d,%d)", handle, size);
fread_wrapper(s, dest, size, handle);
break;
}
case K_FILEIO_WRITE_RAW : {
int handle = UKPV(1);
char *buf = kernel_dereference_char_pointer(s, argv[2], 0);
int size = UKPV(3);
debug(3, "K_FILEIO_WRITE_RAW(%d,%d)", handle, size);
fwrite_wrapper(s, handle, buf, size);
break;
}
case K_FILEIO_UNLINK : {
char *name = kernel_dereference_char_pointer(s, argv[1], 0);
debug(3, "K_FILEIO_UNLINK(%s)", name);
unlink(name);
break;
}
case K_FILEIO_READ_STRING : {
char *dest = kernel_dereference_char_pointer(s, argv[1], 0);
int size = UKPV(2);
int handle = UKPV(3);
debug(3, "K_FILEIO_READ_STRING(%d,%d)", handle, size);
fgets_wrapper(s, dest, size, handle);
return argv[1];
}
case K_FILEIO_WRITE_STRING : {
int handle = UKPV(1);
int size = UKPV(3);
char *buf = kernel_dereference_char_pointer(s, argv[2], size);
debug(3, "K_FILEIO_WRITE_STRING(%d,%d)", handle, size);
if (buf)
fputs_wrapper(s, handle, size, buf);
break;
}
case K_FILEIO_SEEK : {
int handle = UKPV(1);
int offset = UKPV(2);
int whence = UKPV(3);
debug(3, "K_FILEIO_SEEK(%d,%d,%d)", handle, offset, whence);
fseek_wrapper(s, handle, offset, whence);
break;
}
case K_FILEIO_FIND_FIRST : {
char *mask = kernel_dereference_char_pointer(s, argv[1], 0);
reg_t buf = argv[2];
int attr = UKPV(3); // We won't use this, Win32 might, though...
debug(3, "K_FILEIO_FIND_FIRST(%s,0x%x)", mask, attr);
#ifndef WIN32
if (strcmp(mask, "*.*") == 0)
strcpy(mask, "*"); // For UNIX
#endif
if (!s->dirseeker)
s->dirseeker = new DirSeeker(s);
assert(s->dirseeker);
s->dirseeker->first_file(".", mask, buf);
break;
}
case K_FILEIO_FIND_NEXT : {
assert(s->dirseeker);
debug(3, "K_FILEIO_FIND_NEXT()");
s->dirseeker->next_file();
break;
}
case K_FILEIO_STAT : {
char *name = kernel_dereference_char_pointer(s, argv[1], 0);
s->r_acc = make_reg(0, sci_file_size(name) >= 0);
debug(3, "K_FILEIO_STAT(%s) -> %d", name, s->r_acc.offset);
break;
}
default :
SCIkwarn(SCIkERROR, "Unknown FileIO() sub-command: %d\n", func_nr);
}
return s->r_acc;
}
} // End of namespace Sci
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