/*
Open a Zip file. path contain the full pathname (by example,
on a Windows NT computer "c:\\test\\zlib109.zip" or on an Unix computer
"zlib/zlib109.zip".
If the zipfile cannot be opened (file don't exist or in not valid), the
return value is NULL.
Else, the return value is a unzFile Handle, usable with other function
of this unzip package.
*/
unzFile unzOpen(Common::SeekableReadStream *stream) {
if (!stream)
return NULL;
unz_s *us = new unz_s;
uLong central_pos,uL;
uLong number_disk; /* number of the current dist, used for
spaning ZIP, unsupported, always 0*/
uLong number_disk_with_CD; /* number the the disk with central dir, used
for spaning ZIP, unsupported, always 0*/
uLong number_entry_CD; /* total number of entries in
the central dir
(same than number_entry on nospan) */
int err=UNZ_OK;
us->_stream = stream;
central_pos = unzlocal_SearchCentralDir(*us->_stream);
if (central_pos==0)
err=UNZ_ERRNO;
us->_stream->seek(central_pos, SEEK_SET);
if (us->_stream->err())
err=UNZ_ERRNO;
/* the signature, already checked */
if (unzlocal_getLong(us->_stream,&uL)!=UNZ_OK)
err=UNZ_ERRNO;
/* number of this disk */
if (unzlocal_getShort(us->_stream,&number_disk)!=UNZ_OK)
err=UNZ_ERRNO;
/* number of the disk with the start of the central directory */
if (unzlocal_getShort(us->_stream,&number_disk_with_CD)!=UNZ_OK)
err=UNZ_ERRNO;
/* total number of entries in the central dir on this disk */
if (unzlocal_getShort(us->_stream,&us->gi.number_entry)!=UNZ_OK)
err=UNZ_ERRNO;
/* total number of entries in the central dir */
if (unzlocal_getShort(us->_stream,&number_entry_CD)!=UNZ_OK)
err=UNZ_ERRNO;
if ((number_entry_CD!=us->gi.number_entry) ||
(number_disk_with_CD!=0) ||
(number_disk!=0))
err=UNZ_BADZIPFILE;
/* size of the central directory */
if (unzlocal_getLong(us->_stream,&us->size_central_dir)!=UNZ_OK)
err=UNZ_ERRNO;
/* offset of start of central directory with respect to the
starting disk number */
if (unzlocal_getLong(us->_stream,&us->offset_central_dir)!=UNZ_OK)
err=UNZ_ERRNO;
/* zipfile comment length */
if (unzlocal_getShort(us->_stream,&us->gi.size_comment)!=UNZ_OK)
err=UNZ_ERRNO;
if ((central_pos<us->offset_central_dir+us->size_central_dir) && (err==UNZ_OK))
err=UNZ_BADZIPFILE;
if (err != UNZ_OK) {
delete us->_stream;
delete us;
return NULL;
}
us->byte_before_the_zipfile = central_pos -
(us->offset_central_dir+us->size_central_dir);
us->central_pos = central_pos;
us->pfile_in_zip_read = NULL;
err = unzGoToFirstFile((unzFile)us);
while (err == UNZ_OK) {
// Get the file details
char szCurrentFileName[UNZ_MAXFILENAMEINZIP+1];
unzGetCurrentFileInfo(us, NULL, szCurrentFileName, sizeof(szCurrentFileName) - 1,
NULL, 0, NULL, 0);
// Save details into the hash
cached_file_in_zip fe;
fe.num_file = us->num_file;
fe.pos_in_central_dir = us->pos_in_central_dir;
fe.current_file_ok = us->current_file_ok;
fe.cur_file_info = us->cur_file_info;
fe.cur_file_info_internal = us->cur_file_info_internal;
us->_hash[Common::String(szCurrentFileName)] = fe;
// Move to the next file
err = unzGoToNextFile((unzFile)us);
}
return (unzFile)us;
}
/*
Open a Zip file. path contain the full pathname (by example,
on a Windows NT computer "c:\\test\\zlib109.zip" or on an Unix computer
"zlib/zlib109.zip".
If the zipfile cannot be opened (file don't exist or in not valid), the
return value is NULL.
Else, the return value is a unzFile Handle, usable with other function
of this unzip package.
*/
extern unzFile ZEXPORT unzOpen(const char *path)
{
unz_s us;
unz_s *s;
uLong central_pos,uL;
FILE * fin ;
uLong number_disk; /* number of the current dist, used for
spaning ZIP, unsupported, always 0*/
uLong number_disk_with_CD; /* number the the disk with central dir, used
for spaning ZIP, unsupported, always 0*/
uLong number_entry_CD; /* total number of entries in
the central dir
(same than number_entry on nospan) */
int err=UNZ_OK;
if (unz_copyright[0]!=' ')
return NULL;
fin=FCEUI_UTF8fopen_C(path,"rb");
//fin=fopen(path,"rb");
if (fin==NULL)
return NULL;
central_pos = unzlocal_SearchCentralDir(fin);
if (central_pos==0)
err=UNZ_ERRNO;
if (fseek(fin,central_pos,SEEK_SET)!=0)
err=UNZ_ERRNO;
/* the signature, already checked */
if (unzlocal_getLong(fin,&uL)!=UNZ_OK)
err=UNZ_ERRNO;
/* number of this disk */
if (unzlocal_getShort(fin,&number_disk)!=UNZ_OK)
err=UNZ_ERRNO;
/* number of the disk with the start of the central directory */
if (unzlocal_getShort(fin,&number_disk_with_CD)!=UNZ_OK)
err=UNZ_ERRNO;
/* total number of entries in the central dir on this disk */
if (unzlocal_getShort(fin,&us.gi.number_entry)!=UNZ_OK)
err=UNZ_ERRNO;
/* total number of entries in the central dir */
if (unzlocal_getShort(fin,&number_entry_CD)!=UNZ_OK)
err=UNZ_ERRNO;
if ((number_entry_CD!=us.gi.number_entry) ||
(number_disk_with_CD!=0) ||
(number_disk!=0))
err=UNZ_BADZIPFILE;
/* size of the central directory */
if (unzlocal_getLong(fin,&us.size_central_dir)!=UNZ_OK)
err=UNZ_ERRNO;
/* offset of start of central directory with respect to the
starting disk number */
if (unzlocal_getLong(fin,&us.offset_central_dir)!=UNZ_OK)
err=UNZ_ERRNO;
/* zipfile comment length */
if (unzlocal_getShort(fin,&us.gi.size_comment)!=UNZ_OK)
err=UNZ_ERRNO;
if ((central_pos<us.offset_central_dir+us.size_central_dir) &&
(err==UNZ_OK))
err=UNZ_BADZIPFILE;
if (err!=UNZ_OK)
{
fclose(fin);
return NULL;
}
us.file=fin;
us.byte_before_the_zipfile = central_pos -
(us.offset_central_dir+us.size_central_dir);
us.central_pos = central_pos;
us.pfile_in_zip_read = NULL;
s=(unz_s*)ALLOC(sizeof(unz_s));
*s=us;
unzGoToFirstFile((unzFile)s);
return (unzFile)s;
}
/*
Open a Zip file. path contain the full pathname (by example,
on a Windows NT computer "c:\\test\\zlib109.zip" or on an Unix computer
"zlib/zlib109.zip".
If the zipfile cannot be opened (file don't exist or in not valid), the
return value is NULL.
Else, the return value is a unzFile Handle, usable with other function
of this unzip package.
*/
unzFile ZIP_Open (const char *path, unsigned char hash[MAX_HASH_SIZE], int *hashlen)
{
unz_s us;
unz_s *s;
uLong central_pos,uL;
FILE * fin ;
char buf[22];
char *lowercase_name;
int i;
uLong number_disk; /* number of the current dist, used for
spaning ZIP, unsupported, always 0*/
uLong number_disk_with_CD; /* number the the disk with central dir, used
for spaning ZIP, unsupported, always 0*/
uLong number_entry_CD; /* total number of entries in
the central dir
(same than number_entry on nospan) */
int numFiles, err=UNZ_OK;
fin=fopen(path,"rb");
if (fin==NULL)
return NULL;
central_pos = unzlocal_SearchCentralDir(fin);
if (central_pos==0)
err=UNZ_ERRNO;
if (fseek(fin,central_pos,SEEK_SET)!=0)
err=UNZ_ERRNO;
// UTTAR: Reducing the number of calls to fread drastically to improve loading performance
if(fread(buf, 22, 1, fin) != 1)
{
fclose(fin);
return NULL;
}
else
{
uL = LITTLE_INT(*((int*)&buf[0]));
number_disk = LITTLE_SHORT(*((short*)&buf[4]));
number_disk_with_CD = LITTLE_SHORT(*((short*)&buf[6]));
us.gi.number_entry = LITTLE_SHORT(*((short*)&buf[8]));
number_entry_CD = LITTLE_SHORT(*((short*)&buf[10]));
us.size_central_dir = LITTLE_INT(*((int*)&buf[12]));
us.offset_central_dir = LITTLE_INT(*((int*)&buf[16]));
us.gi.size_comment = LITTLE_SHORT(*((short*)&buf[20]));
if ((number_entry_CD!=us.gi.number_entry) ||
(number_disk_with_CD!=0) ||
(number_disk!=0))
err=UNZ_BADZIPFILE;
if ((central_pos<us.offset_central_dir+us.size_central_dir) &&
(err==UNZ_OK))
err=UNZ_BADZIPFILE;
}
if (err!=UNZ_OK)
{
fclose(fin);
return NULL;
}
us.file=fin;
us.byte_before_the_zipfile = central_pos -
(us.offset_central_dir+us.size_central_dir);
us.central_pos = central_pos;
us.pfile_in_zip_read = NULL;
s=(unz_s*)Tag_Malloc(sizeof(unz_s), MEM_ZIP);
*s=us;
err = unzGoToFirstFile((unzFile)s);
Console_DPrintf("creating new filenameHash\n");
s->filenameHash = g_hash_table_new(g_str_hash, zip_str_equal);
numFiles = 0;
memset(hash, 0, MAX_HASH_SIZE);
Hash_StartHash();
while (err == UNZ_OK)
{
char szCurrentFileName[UNZ_MAXFILENAMEINZIP+1];
unzlocal_GetCurrentFileInfoInternal ((unzFile)s,
&s->cur_file_info, &s->cur_file_info_internal,
szCurrentFileName, sizeof(szCurrentFileName)-1,
NULL, 0,
NULL, 0);
Hash_AddData((char *)&s->cur_file_info, sizeof(s->cur_file_info));
Hash_AddData((char *)&s->cur_file_info_internal, sizeof(s->cur_file_info_internal));
lowercase_name = g_ascii_strdown(szCurrentFileName, -1);
//Console_DPrintf("hashing key %s (%u) with value %p\n", lowercase_name, g_str_hash(lowercase_name), GUINT_TO_POINTER(s->pos_in_central_dir));
g_hash_table_insert(s->filenameHash, lowercase_name, GUINT_TO_POINTER(s->pos_in_central_dir));
numFiles++;
err = unzGoToNextFile((unzFile)s);
}
*hashlen = Hash_EndHash(hash);
Console_DPrintf("s2z hash \"%s\" is: ", path);
for(i = 0; i < *hashlen; i++)
Console_DPrintf("%02x", hash[i]);
Console_DPrintf("\n");
Console_DPrintf("Done reading zip file contents - %i files\n", numFiles);
if (err != UNZ_END_OF_LIST_OF_FILE)
Console_DPrintf("ZIP error: err was %i\n", err);
return (unzFile)s;
}
/*
Open a Zip file. path contain the full pathname (by example,
on a Windows NT computer "c:\\test\\zlib114.zip" or on a Unix computer
"zlib/zlib114.zip".
If the zipfile cannot be opened (file doesn't exist or in not valid), the
return value is NULL.
Else, the return value is an unzFile Handle, usable with other function
of this unzip package.
*/
unzFile ZEXPORT unzOpen2 (
const char *path,
zlib_filefunc_def* pzlib_filefunc_def)
{
unz_s us;
unz_s *s;
uLong central_pos,uL;
uLong number_disk; /* number of the current dist, used for
spaning ZIP, unsupported, always 0*/
uLong number_disk_with_CD; /* number the the disk with central dir, used
for spaning ZIP, unsupported, always 0*/
uLong number_entry_CD; /* total number of entries in
the central dir
(same than number_entry on nospan) */
int err=UNZ_OK;
if (unz_copyright[0]!=' ')
return NULL;
if (pzlib_filefunc_def==NULL)
fill_fopen_filefunc(&us.z_filefunc);
else
us.z_filefunc = *pzlib_filefunc_def;
us.filestream= (*(us.z_filefunc.zopen_file))(us.z_filefunc.opaque,
path,
ZLIB_FILEFUNC_MODE_READ |
ZLIB_FILEFUNC_MODE_EXISTING);
if (us.filestream==NULL)
return NULL;
central_pos = unzlocal_SearchCentralDir(&us.z_filefunc,us.filestream);
if (central_pos==0)
err=UNZ_ERRNO;
if (ZSEEK(us.z_filefunc, us.filestream,
central_pos,ZLIB_FILEFUNC_SEEK_SET)!=0)
err=UNZ_ERRNO;
/* the signature, already checked */
if (unzlocal_getLong(&us.z_filefunc, us.filestream,&uL)!=UNZ_OK)
err=UNZ_ERRNO;
/* number of this disk */
if (unzlocal_getShort(&us.z_filefunc, us.filestream,&number_disk)!=UNZ_OK)
err=UNZ_ERRNO;
/* number of the disk with the start of the central directory */
if (unzlocal_getShort(&us.z_filefunc, us.filestream,&number_disk_with_CD)!=UNZ_OK)
err=UNZ_ERRNO;
/* total number of entries in the central dir on this disk */
if (unzlocal_getShort(&us.z_filefunc, us.filestream,&us.gi.number_entry)!=UNZ_OK)
err=UNZ_ERRNO;
/* total number of entries in the central dir */
if (unzlocal_getShort(&us.z_filefunc, us.filestream,&number_entry_CD)!=UNZ_OK)
err=UNZ_ERRNO;
if ((number_entry_CD!=us.gi.number_entry) ||
(number_disk_with_CD!=0) ||
(number_disk!=0))
err=UNZ_BADZIPFILE;
/* size of the central directory */
if (unzlocal_getLong(&us.z_filefunc, us.filestream,&us.size_central_dir)!=UNZ_OK)
err=UNZ_ERRNO;
/* offset of start of central directory with respect to the
starting disk number */
if (unzlocal_getLong(&us.z_filefunc, us.filestream,&us.offset_central_dir)!=UNZ_OK)
err=UNZ_ERRNO;
/* zipfile comment length */
if (unzlocal_getShort(&us.z_filefunc, us.filestream,&us.gi.size_comment)!=UNZ_OK)
err=UNZ_ERRNO;
if ((central_pos<us.offset_central_dir+us.size_central_dir) &&
(err==UNZ_OK))
err=UNZ_BADZIPFILE;
if (err!=UNZ_OK)
{
ZCLOSE(us.z_filefunc, us.filestream);
return NULL;
}
us.byte_before_the_zipfile = central_pos -
(us.offset_central_dir+us.size_central_dir);
us.central_pos = central_pos;
us.pfile_in_zip_read = NULL;
us.encrypted = 0;
s=(unz_s*)ALLOC(sizeof(unz_s));
*s=us;
unzGoToFirstFile((unzFile)s);
return (unzFile)s;
}
/*
Open a Zip file. path contain the full pathname (by example,
on a Windows NT computer "c:\\test\\zlib109.zip" or on an Unix computer
"zlib/zlib109.zip".
If the zipfile cannot be opened (file don't exist or in not valid), the
return value is NULL.
Else, the return value is a unzFile Handle, usable with other function
of this unzip package.
*/
unzFile unzOpen(Common::SeekableReadStream *stream) {
if (!stream)
return NULL;
unz_s *us = new unz_s;
uLong central_pos,uL;
uLong number_disk; /* number of the current dist, used for
spaning ZIP, unsupported, always 0*/
uLong number_disk_with_CD; /* number the the disk with central dir, used
for spaning ZIP, unsupported, always 0*/
uLong number_entry_CD; /* total number of entries in
the central dir
(same than number_entry on nospan) */
int err=UNZ_OK;
us->_stream = stream;
central_pos = unzlocal_SearchCentralDir(*us->_stream);
if (central_pos==0)
err=UNZ_ERRNO;
us->_stream->seek(central_pos, SEEK_SET);
if (us->_stream->err())
err=UNZ_ERRNO;
/* the signature, already checked */
if (unzlocal_getLong(us->_stream,&uL)!=UNZ_OK)
err=UNZ_ERRNO;
/* number of this disk */
if (unzlocal_getShort(us->_stream,&number_disk)!=UNZ_OK)
err=UNZ_ERRNO;
/* number of the disk with the start of the central directory */
if (unzlocal_getShort(us->_stream,&number_disk_with_CD)!=UNZ_OK)
err=UNZ_ERRNO;
/* total number of entries in the central dir on this disk */
if (unzlocal_getShort(us->_stream,&us->gi.number_entry)!=UNZ_OK)
err=UNZ_ERRNO;
/* total number of entries in the central dir */
if (unzlocal_getShort(us->_stream,&number_entry_CD)!=UNZ_OK)
err=UNZ_ERRNO;
if ((number_entry_CD!=us->gi.number_entry) ||
(number_disk_with_CD!=0) ||
(number_disk!=0))
err=UNZ_BADZIPFILE;
/* size of the central directory */
if (unzlocal_getLong(us->_stream,&us->size_central_dir)!=UNZ_OK)
err=UNZ_ERRNO;
/* offset of start of central directory with respect to the
starting disk number */
if (unzlocal_getLong(us->_stream,&us->offset_central_dir)!=UNZ_OK)
err=UNZ_ERRNO;
/* zipfile comment length */
if (unzlocal_getShort(us->_stream,&us->gi.size_comment)!=UNZ_OK)
err=UNZ_ERRNO;
if ((central_pos<us->offset_central_dir+us->size_central_dir) && (err==UNZ_OK))
err=UNZ_BADZIPFILE;
if (err!=UNZ_OK) {
delete us->_stream;
delete us;
return NULL;
}
us->byte_before_the_zipfile = central_pos -
(us->offset_central_dir+us->size_central_dir);
us->central_pos = central_pos;
us->pfile_in_zip_read = NULL;
unzGoToFirstFile((unzFile)us);
return (unzFile)us;
}
