unz.h

著名SFC模拟器Snes9x的源代码。

/*---------------------------------------------------------------------------
    And some Mac stuff for good measure:
  ---------------------------------------------------------------------------*/

#ifdef THINK_C
#  define MACOS
#  ifndef __STDC__            /* if Think C hasn't defined __STDC__ ... */
#    define __STDC__ 1        /*   make sure it's defined: it needs it */
#  else /* __STDC__ defined */
#    if !__STDC__             /* sometimes __STDC__ is defined as 0; */
#      undef __STDC__         /*   it needs to be 1 or required header */
#      define __STDC__ 1      /*   files are not properly included. */
#    endif /* !__STDC__ */
#  endif /* ?defined(__STDC__) */
#endif /* THINK_C */

#ifdef MPW
#  define MACOS
#  include <Errors.h>
#  include <Files.h>
#  include <Memory.h>
#  include <Quickdraw.h>
#  include <ToolUtils.h>
#  define CtoPstr c2pstr
#  define PtoCstr p2cstr
#  ifdef CR
#    undef  CR
#  endif
#endif /* MPW */

#ifdef MACOS
#  define open(x,y) macopen(x,y, gnVRefNum, glDirID)
#  define close macclose
#  define read macread
#  define write macwrite
#  define lseek maclseek
#  define creat(x,y) maccreat(x, gnVRefNum, glDirID, gostCreator, gostType)
#  define stat(x,y) macstat(x,y,gnVRefNum, glDirID)

#  ifndef isascii
#    define isascii(c) ((unsigned char)(c) <= 0x3F)
#  endif

#  include "macstat.h"

typedef struct _ZipExtraHdr {
    unsigned short header;    /*    2 bytes */
    unsigned short data;      /*    2 bytes */
} ZIP_EXTRA_HEADER;

typedef struct _MacInfoMin {
    unsigned short header;    /*    2 bytes */
    unsigned short data;      /*    2 bytes */
    unsigned long signature;  /*    4 bytes */
    FInfo finfo;              /*   16 bytes */
    unsigned long lCrDat;     /*    4 bytes */
    unsigned long lMdDat;     /*    4 bytes */
    unsigned long flags ;     /*    4 bytes */
    unsigned long lDirID;     /*    4 bytes */
                              /*------------*/
} MACINFOMIN;                 /* = 40 bytes for size of data */

typedef struct _MacInfo {
    unsigned short header;    /*    2 bytes */
    unsigned short data;      /*    2 bytes */
    unsigned long signature;  /*    4 bytes */
    FInfo finfo;              /*   16 bytes */
    unsigned long lCrDat;     /*    4 bytes */
    unsigned long lMdDat;     /*    4 bytes */
    unsigned long flags ;     /*    4 bytes */
    unsigned long lDirID;     /*    4 bytes */
    char rguchVolName[28];    /*   28 bytes */
                              /*------------*/
} MACINFO;                    /* = 68 bytes for size of data */
#endif /* MACOS */

/*---------------------------------------------------------------------------
    And finally, some random extra stuff:
  ---------------------------------------------------------------------------*/

#ifdef MINIX
#  include <stdio.h>
#endif

#ifdef SHORT_NAMES         /* Mark Williams C, ...? */
#  define extract_or_test_files    xtr_or_tst_files
#  define extract_or_test_member   xtr_or_tst_member
#endif

#ifdef MTS
#  include <unix.h>          /* Some important non-ANSI routines */
#  define mkdir(s,n) (-1)    /* No "make directory" capability */
#  define EBCDIC             /* Set EBCDIC conversion on */
#endif





/*************/
/*  Defines  */
/*************/

#ifndef WSIZE
#  define WSIZE 0x8000       /* window size--must be a power of two, and */
#endif /* !WSIZE */          /*  at least 32K for zip's deflate method */

#define DIR_BLKSIZ    64     /* number of directory entries per block
                              *  (should fit in 4096 bytes, usually) */
#ifndef INBUFSIZ
#  define INBUFSIZ    2048   /* works for MS-DOS small model */
#endif /* !INBUFSIZ */

/*
 * If <limits.h> exists on most systems, should include that, since it may
 * define some or all of the following:  NAME_MAX, PATH_MAX, _POSIX_NAME_MAX,
 * _POSIX_PATH_MAX.
 */
#ifdef DOS_OS2
#  include <limits.h>
#endif /* DOS_OS2 */

#ifdef _MAX_PATH
#  define FILNAMSIZ       (_MAX_PATH)
#else /* !_MAX_PATH */
#  define FILNAMSIZ       1025
#endif /* ?_MAX_PATH */

#ifndef PATH_MAX
#  ifdef MAXPATHLEN                /* defined in <sys/param.h> some systems */
#    define PATH_MAX      MAXPATHLEN
#  else
#    if FILENAME_MAX > 255         /* used like PATH_MAX on some systems */
#      define PATH_MAX    FILENAME_MAX
#    else
#      define PATH_MAX    (FILNAMSIZ - 1)
#    endif
#  endif /* ?MAXPATHLEN */
#endif /* !PATH_MAX */

#define OUTBUFSIZ         INBUFSIZ

#define ZSUFX             ".zip"
#define CENTRAL_HDR_SIG   "\113\001\002"   /* the infamous "PK" signature */
#define LOCAL_HDR_SIG     "\113\003\004"   /*  bytes, sans "P" (so unzip */
#define END_CENTRAL_SIG   "\113\005\006"   /*  executable not mistaken for */
#define EXTD_LOCAL_SIG    "\113\007\010"   /*  zipfile itself) */

#define SKIP              0    /* choice of activities for do_string() */
#define DISPLAY           1
#define FILENAME          2
#define EXTRA_FIELD       3

#define DOES_NOT_EXIST    -1   /* return values for check_for_newer() */
#define EXISTS_AND_OLDER  0
#define EXISTS_AND_NEWER  1

#define DOS_OS2_FAT_      0    /* version_made_by codes (central dir) */
#define AMIGA_            1
#define VMS_              2    /* make sure these are not defined on */
#define UNIX_             3    /*  the respective systems!!  (like, for */
#define VM_CMS_           4    /*  instance, "VMS", or "UNIX":  CFLAGS = */
#define ATARI_            5    /*  -O -DUNIX) */
#define OS2_HPFS_         6
#define MAC_              7
#define Z_SYSTEM_         8
#define CPM_              9
/* #define TOPS20_   10?  (TOPS20_ is to be defined in PKZIP 2.0...)  */
#define NUM_HOSTS         10   /* index of last system + 1 */

#define STORED            0    /* compression methods */
#define SHRUNK            1
#define REDUCED1          2
#define REDUCED2          3
#define REDUCED3          4
#define REDUCED4          5
#define IMPLODED          6
#define TOKENIZED         7
#define DEFLATED          8
#define NUM_METHODS       9    /* index of last method + 1 */
/* don't forget to update list_files() appropriately if NUM_METHODS changes */

#define DF_MDY            0    /* date format 10/26/91 (USA only) */
#define DF_DMY            1    /* date format 26/10/91 (most of the world) */
#define DF_YMD            2    /* date format 91/10/26 (a few countries) */

#define UNZIP_VERSION     20   /* compatible with PKUNZIP 2.0 */
#define VMS_VERSION       42   /* if OS-needed-to-extract is VMS:  can do */

/*---------------------------------------------------------------------------
    True sizes of the various headers, as defined by PKWare--so it is not
    likely that these will ever change.  But if they do, make sure both these
    defines AND the typedefs below get updated accordingly.
  ---------------------------------------------------------------------------*/
#define LREC_SIZE     26    /* lengths of local file headers, central */
#define CREC_SIZE     42    /*  directory headers, and the end-of-    */
#define ECREC_SIZE    18    /*  central-dir record, respectively      */

#define MAX_BITS      13                 /* used in unShrink() */
#define HSIZE         (1 << MAX_BITS)    /* size of global work area */

#define LF      10    /* '\n' on ASCII machines.  Must be 10 due to EBCDIC */
#define CR      13    /* '\r' on ASCII machines.  Must be 13 due to EBCDIC */
#define CTRLZ   26    /* DOS & OS/2 EOF marker (used in file_io.c, vms.c) */

#ifdef EBCDIC
#  define ascii_to_native(c)   ebcdic[(c)]
#  define NATIVE    "EBCDIC"
#endif

#if MPW
#  define FFLUSH    putc('\n',stderr);
#else /* !MPW */
#  define FFLUSH    fflush(stderr);
#endif /* ?MPW */

#ifdef VMS
#  define ENV_UNZIP     "UNZIP_OPTS"      /* name of environment variable */
#  define ENV_ZIPINFO   "ZIPINFO_OPTS"
#else /* !VMS */
#  define ENV_UNZIP     "UNZIP"
#  define ENV_ZIPINFO   "ZIPINFO"
#endif /* ?VMS */

#ifdef CRYPT
#  define PWLEN         80
#  define DECRYPT(b)    (update_keys(t=((b)&0xff)^decrypt_byte()),t)
#endif /* CRYPT */

#ifdef QQ  /* Newtware version */
#  define QCOND   (!quietflg)   /* for no file comments with -vq or -vqq */
#else      /* (original) Bill Davidsen version  */
#  define QCOND   (which_hdr)   /* no way to kill file comments with -v, -l */
#endif

#ifndef TRUE
#  define TRUE      1   /* sort of obvious */
#endif
#ifndef FALSE
#  define FALSE     0
#endif

#ifndef SEEK_SET        /* These should all be declared in stdio.h!  But   */
#  define SEEK_SET  0   /*  since they're not (in many cases), do so here. */
#  define SEEK_CUR  1
#  define SEEK_END  2
#endif

#ifndef S_IRUSR
#  define S_IRWXU       00700       /* read, write, execute: owner */
#  define S_IRUSR       00400       /* read permission: owner */
#  define S_IWUSR       00200       /* write permission: owner */
#  define S_IXUSR       00100       /* execute permission: owner */
#  define S_IRWXG       00070       /* read, write, execute: group */
#  define S_IRGRP       00040       /* read permission: group */
#  define S_IWGRP       00020       /* write permission: group */
#  define S_IXGRP       00010       /* execute permission: group */
#  define S_IRWXO       00007       /* read, write, execute: other */
#  define S_IROTH       00004       /* read permission: other */
#  define S_IWOTH       00002       /* write permission: other */
#  define S_IXOTH       00001       /* execute permission: other */
#endif /* !S_IRUSR */

#ifdef ZIPINFO      /* these are individually checked because SysV doesn't */
#  ifndef S_IFBLK   /*  have some of them, Microsoft C others, etc. */
#    define   S_IFBLK     0060000     /* block special */
#  endif
#  ifndef S_IFIFO  /* in Borland C, not MSC */
#    define   S_IFIFO     0010000     /* fifo */
#  endif
#  ifndef S_IFLNK  /* in BSD, not SysV */
#    define   S_IFLNK     0120000     /* symbolic link */
#  endif
#  ifndef S_IFSOCK  /* in BSD, not SysV */
#    define   S_IFSOCK    0140000     /* socket */
#  endif
#  ifndef S_ISUID
#    define S_ISUID       04000       /* set user id on execution */
#  endif
#  ifndef S_ISGID
#    define S_ISGID       02000       /* set group id on execution */
#  endif
#  ifndef S_ISVTX
#    define S_ISVTX       01000       /* directory permissions control */
#  endif
#  ifndef S_ENFMT
#    define S_ENFMT       S_ISGID     /* record locking enforcement flag */
#  endif
#endif /* ZIPINFO */





/**************/
/*  Typedefs  */
/**************/

#ifndef _BULL_SOURCE                /* Bull has it defined somewhere already */
   typedef unsigned char  byte;     /* code assumes UNSIGNED bytes */
#endif /* !_BULL_SOURCE */

typedef char              boolean;
typedef long              longint;
typedef unsigned short    UWORD;
typedef unsigned long     ULONG;
typedef unsigned char     uch;
typedef unsigned short    ush;
typedef unsigned long     ulg;

typedef struct min_info {
    unsigned unix_attr;
    unsigned dos_attr;
    int hostnum;
    longint offset;
    ULONG compr_size;        /* compressed size (needed if extended header) */
    ULONG crc;               /* crc (needed if extended header) */
    unsigned encrypted : 1;  /* file encrypted: decrypt before uncompressing */
    unsigned ExtLocHdr : 1;  /* use time instead of CRC for decrypt check */
    unsigned text : 1;       /* file is text or binary */
    unsigned lcflag : 1;     /* convert filename to lowercase */
} min_info;

typedef struct VMStimbuf {
    char *revdate;           /* (both correspond to Unix modtime/st_mtime) */
    char *credate;
} VMStimbuf;

/*---------------------------------------------------------------------------
    Zipfile layout declarations.  If these headers ever change, make sure the
    xxREC_SIZE defines (above) change with them!
  ---------------------------------------------------------------------------*/