HGE dx9.0 引擎 2D

/* unzip.c -- IO for uncompress .zip files using zlib Version 1.01, May 8th, 2004 Copyright (C) 1998-2004 Gilles Vollant Read unzip.h for more info */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include "zlib.h" #include "unzip.h" #ifdef STDC #include <stddef.h> #include <string.h> #include <stdlib.h> #endif #ifdef NO_ERRNO_H extern int errno; #else #include <errno.h> #endif /* compile with -Dlocal if your debugger can't find static symbols */ #ifndef CASESENSITIVITYDEFAULT_NO #if !defined(unix) && !defined(CASESENSITIVITYDEFAULT_YES) #define CASESENSITIVITYDEFAULT_NO #endif #endif #ifndef UNZ_BUFSIZE #define UNZ_BUFSIZE (32768) #endif #ifndef UNZ_MAXFILENAMEINZIP #define UNZ_MAXFILENAMEINZIP (256) #endif #ifndef ALLOC #define ALLOC(size) (malloc(size)) #endif #ifndef TRYFREE #define TRYFREE(p) {if (p) free(p);} #endif #define SIZECENTRALDIRITEM (0x2e) #define SIZEZIPLOCALHEADER (0x1e) /* unz_file_info_interntal contain internal info about a file in zipfile*/ typedef struct unz_file_info_internal_s { DWORD offset_curfile; /* relative offset of local header 4 bytes */ } unz_file_info_internal; /* file_in_zip_read_info_s contain internal information about a file in zipfile, when reading and decompress it */ typedef struct { char *read_buffer; /* internal buffer for compressed data */ z_stream stream; /* zLib stream structure for inflate */ DWORD pos_in_zipfile; /* position in byte on the zipfile, for fseek*/ DWORD stream_initialised; /* flag set if stream structure is initialised*/ DWORD offset_local_extrafield; /* offset of the local extra field */ DWORD size_local_extrafield; /* size of the local extra field */ DWORD pos_local_extrafield; /* position in the local extra field in read*/ DWORD crc32; /* crc32 of all data uncompressed */ DWORD crc32_wait; /* crc32 we must obtain after decompress all */ DWORD rest_read_compressed; /* number of byte to be decompressed */ DWORD rest_read_uncompressed; /*number of byte to be obtained after decomp*/ zlib_filefunc_def z_filefunc; void *filestream; /* io structore of the zipfile */ DWORD compression_method; /* compression method (0==store) */ DWORD byte_before_the_zipfile; /* byte before the zipfile, (>0 for sfx)*/ int raw; } file_in_zip_read_info_s; /* unz_s contain internal information about the zipfile */ typedef struct { zlib_filefunc_def z_filefunc; void *filestream; /* io structore of the zipfile */ unz_global_info gi; /* public global information */ DWORD byte_before_the_zipfile; /* byte before the zipfile, (>0 for sfx)*/ DWORD num_file; /* number of the current file in the zipfile*/ DWORD pos_in_central_dir; /* pos of the current file in the central dir*/ DWORD current_file_ok; /* flag about the usability of the current file*/ DWORD central_pos; /* position of the beginning of the central dir*/ DWORD size_central_dir; /* size of the central directory */ DWORD offset_central_dir; /* offset of start of central directory with respect to the starting disk number */ unz_file_info cur_file_info; /* public info about the current file in zip*/ unz_file_info_internal cur_file_info_internal; /* private info about it*/ file_in_zip_read_info_s *pfile_in_zip_read; /* structure about the current file if we are decompressing it */ int encrypted; #ifndef NOUNCRYPT DWORD keys[3]; /* keys defining the pseudo-random sequence */ const DWORD *pcrc_32_tab; #endif } unz_s; #ifndef NOUNCRYPT #include "crypt.h" #endif /* =========================================================================== Read a byte from a gz_stream; update next_in and avail_in. Return EOF for end of file. IN assertion: the stream s has been sucessfully opened for reading. */ static int unzlocal_getByte(const zlib_filefunc_def *pzlib_filefunc_def, void *filestream, int *pi) { BYTE c; int err = (int)ZREAD(*pzlib_filefunc_def, filestream, &c, 1); if (err == 1) { *pi = (int)c; return UNZ_OK; } else { if (ZERROR(*pzlib_filefunc_def, filestream)) { return UNZ_ERRNO; } else { return UNZ_EOF; } } } /* =========================================================================== Reads a long in LSB order from the given gz_stream. Sets */ static int unzlocal_getShort(const zlib_filefunc_def *pzlib_filefunc_def, void *filestream, DWORD *pX) { DWORD x; int i; int err; err = unzlocal_getByte(pzlib_filefunc_def, filestream, &i); x = (DWORD)i; if (err == UNZ_OK) { err = unzlocal_getByte(pzlib_filefunc_def, filestream, &i); } x += ((DWORD)i) << 8; if (err == UNZ_OK) { *pX = x; } else { *pX = 0; } return err; } //------------------------------------------------------------------------- static int unzlocal_getLong(const zlib_filefunc_def *pzlib_filefunc_def, void *filestream, DWORD *pX) { DWORD x; int i; int err; err = unzlocal_getByte(pzlib_filefunc_def, filestream, &i); x = (DWORD)i; if (err == UNZ_OK) { err = unzlocal_getByte(pzlib_filefunc_def, filestream, &i); } x += ((DWORD)i) << 8; if (err == UNZ_OK) { err = unzlocal_getByte(pzlib_filefunc_def, filestream, &i); } x += ((DWORD)i) << 16; if (err == UNZ_OK) { err = unzlocal_getByte(pzlib_filefunc_def, filestream, &i); } x += ((DWORD)i) << 24; if (err == UNZ_OK) { *pX = x; } else { *pX = 0; } return err; } //------------------------------------------------------------------------- #ifdef CASESENSITIVITYDEFAULT_NO #define CASESENSITIVITYDEFAULTVALUE 2 #else #define CASESENSITIVITYDEFAULTVALUE 1 #endif #ifndef STRCMPCASENOSENTIVEFUNCTION #define STRCMPCASENOSENTIVEFUNCTION strcmpcasenosensitive_internal #endif /* Compare two filename (fileName1,fileName2). If iCaseSenisivity = 1, comparision is case sensitivity (like strcmp) If iCaseSenisivity = 2, comparision is not case sensitivity (like strcmpi or strcasecmp) If iCaseSenisivity = 0, case sensitivity is defaut of your operating system (like 1 on Unix, 2 on Windows) */ /* extern int ZEXPORT unzStringFileNameCompare(const char *fileName1, const char *fileName2, int iCaseSensitivity) { if (iCaseSensitivity == 0) { iCaseSensitivity = CASESENSITIVITYDEFAULTVALUE; } if (iCaseSensitivity == 1) { return strcmp(fileName1, fileName2); } return stricmp(fileName1, fileName2); } */ //------------------------------------------------------------------------- #ifndef BUFREADCOMMENT #define BUFREADCOMMENT (0x400) #endif /* Locate the Central directory of a zipfile (at the end, just before the global comment) */ static DWORD unzlocal_SearchCentralDir(const zlib_filefunc_def *pzlib_filefunc_def, void *filestream) { BYTE *buf; DWORD uSizeFile; DWORD uBackRead; DWORD uMaxBack = 0xffff; /* maximum size of global comment */ DWORD uPosFound = 0; if (ZSEEK(*pzlib_filefunc_def, filestream, 0, SEEK_END) != 0) { return 0; } uSizeFile = ZTELL(*pzlib_filefunc_def, filestream); if (uMaxBack > uSizeFile) { uMaxBack = uSizeFile; } buf = (BYTE*)ALLOC(BUFREADCOMMENT + 4); if (buf == NULL) { return 0; } uBackRead = 4; while (uBackRead < uMaxBack) { DWORD uReadSize, uReadPos; int i; if (uBackRead + BUFREADCOMMENT > uMaxBack) { uBackRead = uMaxBack; } else { uBackRead += BUFREADCOMMENT; } uReadPos = uSizeFile - uBackRead; uReadSize = ((BUFREADCOMMENT + 4) < (uSizeFile - uReadPos)) ? (BUFREADCOMMENT + 4): (uSizeFile - uReadPos); if (ZSEEK(*pzlib_filefunc_def, filestream, uReadPos, SEEK_SET) != 0) { brea