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- /*---------------------------------------------------------------------------
-
- unzip.h
-
- This header file is used by all of the unzip source files. Its contents
- are divided into six more-or-less separate sections: OS-dependent includes,
- (mostly) OS-independent defines, typedefs, function prototypes (or "proto-
- types," in the case of non-ANSI compilers), macros, and global-variable
- declarations.
-
- ---------------------------------------------------------------------------*/
-
-
-
- /***************************/
- /* OS-Dependent Includes */
- /***************************/
-
- #include <stdio.h> /* this is your standard header for all C compiles */
- #include <ctype.h>
- #include <errno.h> /* used in mapped_name() */
- #define DECLARE_ERRNO /* everybody except MSC 6.0 */
- #ifdef VMS /* sigh...you just KNEW someone had to break this. */
- # include <types.h> /* (placed up here instead of in VMS section below */
- # include <stat.h> /* because types.h is used in some other headers) */
- #else /* almost everybody */
- # if defined(THINK_C) || defined(MPW) /* for Macs */
- # include <stddef.h>
- # else
- # include <sys/types.h> /* off_t, time_t, dev_t, ... */
- # include <sys/stat.h> /* Everybody seems to need this. */
- # endif
- #endif /* This include file defines
- * #define S_IREAD 0x0100 (owner may read)
- * #define S_IWRITE 0x0080 (owner may write)
- * as used in the creat() standard function. Must
- * be included AFTER sys/types.h for most systems.
- */
-
-
- /*---------------------------------------------------------------------------
- Next, a word from our Unix (mostly) sponsors:
- ---------------------------------------------------------------------------*/
-
- #ifdef UNIX
- # ifndef AMIGA
- # include <sys/param.h> /* conflict with <sys/types.h>, some systems? */
- # endif
- # ifndef BSIZE
- # define BSIZE DEV_BSIZE /* assume common for all Unix systems */
- # endif
-
- # ifndef BSD
- # ifndef AMIGA
- # define NO_MKDIR /* for mapped_name() */
- # endif
- # include <time.h>
- struct tm *gmtime(), *localtime();
- # else /* BSD */
- # include <sys/time.h>
- # include <sys/timeb.h>
- # endif
-
- #else /* !UNIX */
- # define BSIZE 512 /* disk block size */
- #endif
-
- #if defined(V7) || defined(BSD)
- # define strchr index
- # define strrchr rindex
- #endif
-
- /*---------------------------------------------------------------------------
- And now, our MS-DOS and OS/2 corner:
- ---------------------------------------------------------------------------*/
-
- #ifdef __TURBOC__
- # define DOS_OS2 /* Turbo C under DOS, MSC under DOS or OS2 */
- # include <sys/timeb.h> /* for structure ftime */
- # include <mem.h> /* for memcpy() */
- #else /* NOT Turbo C... */
- # ifdef MSDOS /* but still MS-DOS, so we'll assume it's */
- # ifndef MSC /* Microsoft's compiler and fake the ID, if */
- # define MSC /* necessary (it is in 5.0; apparently not */
- # endif /* in 5.1 and 6.0) */
- # include <dos.h> /* _dos_setftime() */
- # endif
- # ifdef OS2 /* stuff for DOS and OS/2 family version */
- # ifndef MSC
- # define MSC
- # endif
- # include <os2.h> /* DosQFileInfo(), DosSetFileInfo()? */
- # endif
- #endif
-
- #ifdef MSC /* defined for all versions of MSC now */
- # define DOS_OS2 /* Turbo C under DOS, MSC under DOS or OS/2 */
- # ifndef __STDC__ /* MSC 5.0 and 5.1 aren't truly ANSI-standard, */
- # define __STDC__ 1 /* but they understand prototypes...so */
- # endif /* they're close enough for our purposes */
- # if defined(_MSC_VER) && (_MSC_VER >= 600) /* new with 5.1 or 6.0 ... */
- # undef DECLARE_ERRNO /* errno is now a function in a dynamic link */
- # endif /* library (or something)--incompatible with */
- #endif /* the usual "extern int errno" declaration */
-
- #ifdef DOS_OS2 /* defined for both Turbo C, MSC */
- # include <io.h> /* lseek(), open(), setftime(), dup(), creat() */
- #endif
-
- /*---------------------------------------------------------------------------
- Followed by some VMS (mostly) stuff:
- ---------------------------------------------------------------------------*/
-
- #ifdef VMS
- # include <time.h> /* the usual non-BSD time functions */
- # include <file.h> /* same things as fcntl.h has */
- # include <rmsdef.h> /* RMS error codes */
- # include "fatdef.h" /* RMS-related things used by VMSmunch */
- # define SET_TIMES 0 /* these 4 defines are arguments to VMSmunch */
- # define GET_RTYPE 1
- # define CHANGE_RTYPE 2
- # define RESTORE_RTYPE 3
- # define UNIX /* can share most of same code from now on */
- # define RETURN return_VMS /* VMS interprets return codes incorrectly */
- #else /* !VMS */
- # define RETURN return /* only used in main() */
- # ifdef V7
- # define O_RDONLY 0
- # define O_WRONLY 1
- # define O_RDWR 2
- # else /* !V7 */
- # ifdef MTS
- # include <sys/file.h> /* MTS uses this instead of fcntl.h */
- # else /* !MTS */
- # ifdef COHERENT /* Coherent 3.10/Mark Williams C */
- # include <sys/fcntl.h>
- # define SHORT_NAMES
- # define tzset settz
- # else /* !COHERENT */
- # include <fcntl.h> /* #define O_BINARY 0x8000 (no CR/LF */
- # endif /* ?COHERENT */ /* translation), as used in open() */
- # endif /* ?MTS */
- # endif /* ?V7 */
- #endif /* ?VMS */
-
- /*---------------------------------------------------------------------------
- And some Mac stuff for good measure:
- ---------------------------------------------------------------------------*/
-
- #ifdef THINK_C
- # define MACOS
- # define NOTINT16
- # ifndef __STDC__ /* THINK_C isn't truly ANSI-standard, */
- # define __STDC__ 1 /* but it understands prototypes...so */
- # endif /* it's close enough for our purposes */
- # include <time.h>
- # include <unix.h>
- # include "macstat.h"
- #endif
- #ifdef MPW /* not tested yet - should be easy enough tho */
- # define MACOS
- # define NOTINT16
- # include <time.h>
- # include <fcntl.h>
- # include "macstat.h"
- #endif
-
- /*---------------------------------------------------------------------------
- And finally, some random extra stuff:
- ---------------------------------------------------------------------------*/
-
- #if __STDC__
- # include <stdlib.h> /* standard library prototypes, malloc(), etc. */
- # include <string.h> /* defines strcpy, strcmp, memcpy, etc. */
- #else
- char *malloc();
- char *strchr(), *strrchr();
- long lseek();
- #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
-
-
-
-
-
- /*************/
- /* Defines */
- /*************/
-
- #define INBUFSIZ BUFSIZ /* same as stdio uses */
- #define DIR_BLKSIZ 64 /* number of directory entries per block
- * (should fit in 4096 bytes, usually) */
- /*
- * 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.
- */
- #define FILNAMSIZ (1025)
- #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 */
-
- #ifdef ZIPINFO
- # define OUTBUFSIZ BUFSIZ /* zipinfo needs less than unzip does */
- #else
- # define OUTBUFSIZ 0x2000 /* unImplode needs power of 2, >= 0x2000 */
- #endif
-
- #define ZSUFX ".zip"
- #define CENTRAL_HDR_SIG "\120\113\001\002" /* the infamous "PK" */
- #define LOCAL_HDR_SIG "\120\113\003\004" /* signature bytes */
- #define END_CENTRAL_SIG "\120\113\005\006"
-
- #define SKIP 0 /* choice of activities for do_string() */
- #define DISPLAY 1
- #define FILENAME 2
-
- #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, "UNIX": CFLAGS = -O -DUNIX) */
- #define ATARI_ 5
- #define OS2_HPFS_ 6
- #define MAC_ 7
- #define Z_SYSTEM_ 8
- #define CPM_ 9
- /* #define TOPS20_ 10 (we're going to need this soon...) */
- #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 NUM_METHODS 7 /* index of last method + 1 */
- /* don't forget to update list_files() appropriately if NUM_METHODS changes */
-
- #ifndef MACOS
- # define TRUE 1 /* sort of obvious */
- # define FALSE 0
- #endif
-
- #define UNZIP_VERSION 11 /* compatible with PKUNZIP 1.1 */
-
- #ifndef UNZIP_OS /* not used yet, but will need for Zip */
- # ifdef UNIX /* (could be defined in Makefile or...) */
- # define UNZIP_OS UNIX_
- # endif
- # ifdef DOS_OS2
- # define UNZIP_OS DOS_OS2_FAT_
- # endif
- # ifdef VMS
- # define UNZIP_OS VMS_
- # endif
- # ifdef MTS
- # define UNZIP_OS UNIX_
- # endif
- # ifdef MACOS
- # define UNZIP_OS MAC_
- # endif
- # ifndef UNZIP_OS /* still not defined: default setting */
- # define UNZIP_OS UNKNOWN
- # endif
- #endif
-
- /*---------------------------------------------------------------------------
- Macros for accessing the ULONG header fields. When NOTINT16 is *not*
- defined, these fields are allocated as arrays of char within the structs.
- This prevents 32-bit compilers from padding the structs so that ULONGs
- start on 4-byte boundaries (this will not work on machines that can ONLY
- access ULONGs if they start on 4-byte boundaries). If NOTINT16 *is*
- defined, however, the original data are individually copied into working
- structs consisting of UWORDs and ULONGs (which may therefore be padded
- arbitrarily), so the ULONGs are accessed normally.
- ---------------------------------------------------------------------------*/
-
- #ifdef NOTINT16
- # define ULONG_(X) X
- #else
- # define ULONG_(X) (*((ULONG *) (X)))
- #endif
-
- /*---------------------------------------------------------------------------
- True sizes of the various headers, as defined by Phil Katz--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 */
-
- #ifdef EBCDIC
- # define ascii_to_native(c) ebcdic[(c)]
- #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
-
-
-
-
-
- /**************/
- /* Typedefs */
- /**************/
-
- typedef unsigned char byte; /* code assumes UNSIGNED bytes */
- typedef long longint;
- typedef unsigned short UWORD;
- typedef unsigned long ULONG;
- typedef char boolean;
-
- /*---------------------------------------------------------------------------
- Zipfile layout declarations. If these headers ever change, make sure the
- ??REC_SIZE defines (above) change with them!
- ---------------------------------------------------------------------------*/
-
- #ifdef NOTINT16
-
- typedef byte local_byte_header[ LREC_SIZE ];
- # define L_VERSION_NEEDED_TO_EXTRACT_0 0
- # define L_VERSION_NEEDED_TO_EXTRACT_1 1
- # define L_GENERAL_PURPOSE_BIT_FLAG 2
- # define L_COMPRESSION_METHOD 4
- # define L_LAST_MOD_FILE_TIME 6
- # define L_LAST_MOD_FILE_DATE 8
- # define L_CRC32 10
- # define L_COMPRESSED_SIZE 14
- # define L_UNCOMPRESSED_SIZE 18
- # define L_FILENAME_LENGTH 22
- # define L_EXTRA_FIELD_LENGTH 24
-
- typedef byte central_directory_byte_header[ CREC_SIZE ];
- # define C_VERSION_MADE_BY_0 0
- # define C_VERSION_MADE_BY_1 1
- # define C_VERSION_NEEDED_TO_EXTRACT_0 2
- # define C_VERSION_NEEDED_TO_EXTRACT_1 3
- # define C_GENERAL_PURPOSE_BIT_FLAG 4
- # define C_COMPRESSION_METHOD 6
- # define C_LAST_MOD_FILE_TIME 8
- # define C_LAST_MOD_FILE_DATE 10
- # define C_CRC32 12
- # define C_COMPRESSED_SIZE 16
- # define C_UNCOMPRESSED_SIZE 20
- # define C_FILENAME_LENGTH 24
- # define C_EXTRA_FIELD_LENGTH 26
- # define C_FILE_COMMENT_LENGTH 28
- # define C_DISK_NUMBER_START 30
- # define C_INTERNAL_FILE_ATTRIBUTES 32
- # define C_EXTERNAL_FILE_ATTRIBUTES 34
- # define C_RELATIVE_OFFSET_LOCAL_HEADER 38
-
- typedef byte end_central_byte_record[ ECREC_SIZE+4 ];
- /* define SIGNATURE 0 space-holder only */
- # define NUMBER_THIS_DISK 4
- # define NUM_DISK_WITH_START_CENTRAL_DIR 6
- # define NUM_ENTRIES_CENTRL_DIR_THS_DISK 8
- # define TOTAL_ENTRIES_CENTRAL_DIR 10
- # define SIZE_CENTRAL_DIRECTORY 12
- # define OFFSET_START_CENTRAL_DIRECTORY 16
- # define ZIPFILE_COMMENT_LENGTH 20
-
-
- typedef struct local_file_header { /* LOCAL */
- byte version_needed_to_extract[2];
- UWORD general_purpose_bit_flag;
- UWORD compression_method;
- UWORD last_mod_file_time;
- UWORD last_mod_file_date;
- ULONG crc32;
- ULONG compressed_size;
- ULONG uncompressed_size;
- UWORD filename_length;
- UWORD extra_field_length;
- } local_file_header;
-
- typedef struct central_directory_file_header { /* CENTRAL */
- byte version_made_by[2];
- byte version_needed_to_extract[2];
- UWORD general_purpose_bit_flag;
- UWORD compression_method;
- UWORD last_mod_file_time;
- UWORD last_mod_file_date;
- ULONG crc32;
- ULONG compressed_size;
- ULONG uncompressed_size;
- UWORD filename_length;
- UWORD extra_field_length;
- UWORD file_comment_length;
- UWORD disk_number_start;
- UWORD internal_file_attributes;
- ULONG external_file_attributes;
- ULONG relative_offset_local_header;
- } central_directory_file_header;
-
- typedef struct end_central_dir_record { /* END CENTRAL */
- UWORD number_this_disk;
- UWORD num_disk_with_start_central_dir;
- UWORD num_entries_centrl_dir_ths_disk;
- UWORD total_entries_central_dir;
- ULONG size_central_directory;
- ULONG offset_start_central_directory;
- UWORD zipfile_comment_length;
- } end_central_dir_record;
-
-
- #else /* !NOTINT16: read data directly into the structure we'll be using */
-
-
- typedef struct local_file_header { /* LOCAL */
- byte version_needed_to_extract[2];
- UWORD general_purpose_bit_flag;
- UWORD compression_method;
- UWORD last_mod_file_time;
- UWORD last_mod_file_date;
- byte crc32[4];
- byte compressed_size[4];
- byte uncompressed_size[4];
- UWORD filename_length;
- UWORD extra_field_length;
- } local_file_header;
-
- typedef struct central_directory_file_header { /* CENTRAL */
- byte version_made_by[2];
- byte version_needed_to_extract[2];
- UWORD general_purpose_bit_flag;
- UWORD compression_method;
- UWORD last_mod_file_time;
- UWORD last_mod_file_date;
- byte crc32[4];
- byte compressed_size[4];
- byte uncompressed_size[4];
- UWORD filename_length;
- UWORD extra_field_length;
- UWORD file_comment_length;
- UWORD disk_number_start;
- UWORD internal_file_attributes;
- byte external_file_attributes[4];
- byte relative_offset_local_header[4];
- } central_directory_file_header;
-
- typedef struct end_central_dir_record { /* END CENTRAL */
- byte _sig_[4]; /* space-holder only */
- UWORD number_this_disk;
- UWORD num_disk_with_start_central_dir;
- UWORD num_entries_centrl_dir_ths_disk;
- UWORD total_entries_central_dir;
- byte size_central_directory[4];
- byte offset_start_central_directory[4];
- UWORD zipfile_comment_length;
- } end_central_dir_record;
-
- #endif /* !NOTINT16 */
-
-
-
-
-
- /*************************/
- /* Function Prototypes */
- /*************************/
-
- #ifndef __ /* This amusing little construct was swiped without */
- # if __STDC__ /* permission from the fine folks at Cray Research, */
- # define __(X) X /* Inc. Should probably give them a call and see */
- # else /* if they mind, but.... Then again, I can't think */
- # define __(X) () /* of any other way to do this, so maybe it's an */
- # endif /* algorithm? Whatever, thanks to CRI. (Note: */
- #endif /* keep interior stuff parenthesized.) */
- /*
- * Toad Hall Note: Not to worry: I've seen this somewhere else too,
- * so obviously it's been stolen more than once.
- * That makes it public domain, right?
- */
-
- /*---------------------------------------------------------------------------
- Functions in nunzip.c:
- ---------------------------------------------------------------------------*/
-
- void usage __( (void) );
- int process_zipfile __( (void) );
- int find_end_central_dir __( (void) );
- int process_end_central_dir __( (void) );
- int list_files __( (void) );
- int extract_or_test_files __( (void) );
- int extract_or_test_member __( (void) );
- int process_central_file_header __( (void) );
- int process_local_file_header __( (void) );
-
- /*---------------------------------------------------------------------------
- Functions in file_io.c:
- ---------------------------------------------------------------------------*/
-
- int open_input_file __( (void) );
- int readbuf __( (char *buf, register unsigned size) );
- int create_output_file __( (void) );
- int FillBitBuffer __( (register int bits) );
- int ReadByte __( (UWORD *x) );
- int FlushOutput __( (void) );
- /*
- * static int WriteBuffer __( (int fd, unsigned char *buf, int len) );
- * static int dos2unix __( (unsigned char *buf, int len) );
- */
- void set_file_time_and_close __( (void) );
-
- /*---------------------------------------------------------------------------
- Macintosh file_io functions:
- ---------------------------------------------------------------------------*/
-
- #ifdef MACOS
- void macfstest __( (int vrefnum, int wd) );
- /*
- * static int IsHFSDisk __( (int wAppVRefNum) );
- */
- int mkdir __( (char *path, int mode) );
- void SetMacVol __( (char *pch, short wVRefNum) );
- #endif
-
- /*---------------------------------------------------------------------------
- Uncompression functions (all internal compression routines, enclosed in
- comments below, are prototyped in their respective files and are invisi-
- ble to external functions):
- ---------------------------------------------------------------------------*/
-
- void unImplode __( (void) ); /* unimplod.c */
- /*
- * static void ReadLengths __( (sf_tree *tree) );
- * static void SortLengths __( (sf_tree *tree) );
- * static void GenerateTrees __( (sf_tree *tree, sf_node *nodes) );
- * static void LoadTree __( (sf_tree *tree, int treesize, sf_node *nodes) );
- * static void LoadTrees __( (void) );
- * static void ReadTree __( (register sf_node *nodes, int *dest) );
- */
-
- void unReduce __( (void) ); /* unreduce.c */
- /*
- * static void LoadFollowers __( (void) );
- */
-
- void unShrink __( (void) ); /* unshrink.c */
- /*
- * static void partial_clear __( (void) );
- */
-
- /*---------------------------------------------------------------------------
- Functions in match.c, mapname.c, misc.c, etc.:
- ---------------------------------------------------------------------------*/
-
- int match __( (char *string, char *pattern) ); /* match.c */
- /*
- * static BOOLEAN do_list __( (register char *string, char *pattern) );
- * static void list_parse __( (char **patp, char *lowp, char *highp) );
- * static char nextch __( (char **patp) );
- */
-
- int mapped_name __( (void) ); /* mapname.c */
-
- void UpdateCRC __( (register unsigned char *s, register int len) );
- int do_string __( (unsigned int len, int option) ); /* misc.c */
- UWORD makeword __( (byte *b) ); /* misc.c */
- ULONG makelong __( (byte *sig) ); /* misc.c */
- void return_VMS __( (int zip_error) ); /* misc.c */
- #ifdef ZMEM
- char *memset __( (register char *buf, register char init, register unsigned int len) );
- char *memcpy __( (register char *dst, register char *src, register unsigned int len) );
- #endif /* These guys MUST be ifdef'd because their definition */
- /* conflicts with the standard one. Others (makeword, */
- /* makelong, return_VMS) don't matter. */
-
- int VMSmunch __( (char *filename, int action, char *extra) );
- #ifdef AMIGA
- int utime __( (char *file, time_t timep[]) );
- #endif
-
-
-
-
-
- /************/
- /* Macros */
- /************/
-
- #ifndef min /* MSC defines this in stdlib.h */
- # define min(a,b) ((a) < (b) ? (a) : (b))
- #endif
-
-
- #define LSEEK(abs_offset) {longint request=(abs_offset), inbuf_offset=request%INBUFSIZ, bufstart=request-inbuf_offset;\
- if(bufstart!=cur_zipfile_bufstart) {cur_zipfile_bufstart=lseek(zipfd,bufstart,SEEK_SET);\
- if((incnt=read(zipfd,inbuf,INBUFSIZ))<=0) return(51); inptr=inbuf+inbuf_offset; incnt-=inbuf_offset;\
- }else {incnt+=(inptr-inbuf)-inbuf_offset; inptr=inbuf+inbuf_offset; }}
-
- /*
- * Seek to the block boundary of the block which includes abs_offset,
- * then read block into input buffer and set pointers appropriately.
- * If block is already in the buffer, just set the pointers. This macro
- * is used by process_end_central_dir (unzip.c) and do_string (misc.c).
- * A slightly modified version is embedded within extract_or_test_files
- * (unzip.c). ReadByte and readbuf (file_io.c) are compatible.
- *
- * macro LSEEK( abs_offset )
- * {
- * longint request = abs_offset;
- * longint inbuf_offset = request % INBUFSIZ;
- * longint bufstart = request - inbuf_offset;
- *
- * if (bufstart != cur_zipfile_bufstart) {
- * cur_zipfile_bufstart = lseek(zipfd, bufstart, SEEK_SET);
- * if ((incnt = read(zipfd,inbuf,INBUFSIZ)) <= 0)
- * return(51);
- * inptr = inbuf + inbuf_offset;
- * incnt -= inbuf_offset;
- * } else {
- * incnt += (inptr-inbuf) - inbuf_offset;
- * inptr = inbuf + inbuf_offset;
- * }
- * }
- *
- */
-
-
- #define OUTB(intc) { *outptr++=intc; if (++outcnt==OUTBUFSIZ) FlushOutput(); }
-
- /*
- * macro OUTB(intc)
- * {
- * *outptr++=intc;
- * if (++outcnt==OUTBUFSIZ)
- * FlushOutput();
- * }
- *
- */
-
-
- #define READBIT(nbits,zdest) { if (nbits <= bits_left) { zdest = (int)(bitbuf & mask_bits[nbits]); bitbuf >>= nbits; bits_left -= nbits; } else zdest = FillBitBuffer(nbits);}
-
- /*
- * macro READBIT(nbits,zdest)
- * {
- * if (nbits <= bits_left) {
- * zdest = (int)(bitbuf & mask_bits[nbits]);
- * bitbuf >>= nbits;
- * bits_left -= nbits;
- * } else
- * zdest = FillBitBuffer(nbits);
- * }
- *
- */
-
-
- #define NUKE_CRs(buf,len) {register int i,j; for (i=j=0; j<len; (buf)[i++]=(buf)[j++]) if ((buf)[j]=='\r') ++j; len=i;}
-
- /*
- * Remove all the ASCII carriage returns from buffer buf (length len),
- * shortening as necessary (note that len gets modified in the process,
- * so it CANNOT be an expression). This macro is intended to be used
- * BEFORE A_TO_N(); hence the check for CR instead of '\r'. NOTE: The
- * if-test gets performed one time too many, but it doesn't matter.
- *
- * macro NUKE_CRs( buf, len )
- * {
- * register int i, j;
- *
- * for ( i = j = 0 ; j < len ; (buf)[i++] = (buf)[j++] )
- * if ( (buf)[j] == CR )
- * ++j;
- * len = i;
- * }
- *
- */
-
-
- #define TOLOWER(str1,str2) {char *ps1,*ps2; ps1=(str1)-1; ps2=(str2); while(*++ps1) *ps2++=(isupper(*ps1))?tolower(*ps1):*ps1; *ps2='\0';}
-
- /*
- * Copy the zero-terminated string in str1 into str2, converting any
- * uppercase letters to lowercase as we go. str2 gets zero-terminated
- * as well, of course. str1 and str2 may be the same character array.
- *
- * macro TOLOWER( str1, str2 )
- * {
- * register char *ps1, *ps2;
- *
- * ps1 = (str1) - 1;
- * ps2 = (str2);
- * while ( *++ps1 )
- * *ps2++ = (isupper(*ps1)) ? tolower(*ps1) : *ps1;
- * *ps2='\0';
- * }
- *
- * NOTES: This macro makes no assumptions about the characteristics of
- * the tolower() function or macro (beyond its existence), nor does it
- * make assumptions about the structure of the character set (i.e., it
- * should work on EBCDIC machines, too). The fact that either or both
- * of isupper() and tolower() may be macros has been taken into account;
- * watch out for "side effects" (in the C sense) when modifying this
- * macro.
- */
-
-
- #ifndef ascii_to_native
-
- # define ascii_to_native(c) (c)
- # define A_TO_N(str1)
-
- #else
-
- # define NATIVE /* Used in main() for '-a' and '-c'. */
- # define A_TO_N(str1) { register unsigned char *ps1; for (ps1 = str1; *ps1; ps1++) *ps1 = (ascii_to_native(*ps1)); }
-
- /*
- * Translate the zero-terminated string in str1 from ASCII to the native
- * character set. The translation is performed in-place and uses the
- * ascii_to_native macro to translate each character.
- *
- * macro A_TO_N( str1 )
- * {
- * register unsigned char *ps1;
- *
- * for ( ps1 = str1; *ps1; ps1++ )
- * *ps1 = ( ascii_to_native( *ps1 ) );
- * }
- *
- * NOTE: Using the ascii_to_native macro means that is it the only part of
- * unzip which knows which translation table (if any) is actually in use
- * to produce the native character set. This makes adding new character
- * set translation tables easy insofar as all that is needed is an
- * appropriate ascii_to_native macro definition and the translation
- * table itself. Currently, the only non-ASCII native character set
- * implemented is EBCDIC but this may not always be so.
- */
-
- #endif
-
-
-
-
-
- /*************/
- /* Globals */
- /*************/
-
- extern int tflag;
- /* extern int vflag; (only used in unzip.c) */
- extern int cflag;
- extern int aflag;
- extern int dflag;
- extern int Uflag;
- extern int V_flag;
- #ifdef MACOS
- extern int hfsflag;
- #endif
- extern int lcflag;
- extern unsigned f_attr;
- extern longint csize;
- extern longint ucsize;
-
- extern short prefix_of[];
- #ifdef MACOS
- extern byte *suffix_of;
- extern byte *stack;
- #else
- extern byte suffix_of[];
- extern byte stack[];
- #endif
- extern ULONG crc32val;
- extern UWORD mask_bits[];
-
- extern byte *inbuf;
- extern byte *inptr;
- extern int incnt;
- extern UWORD bitbuf;
- extern int bits_left;
- extern boolean zipeof;
- extern int zipfd;
- #ifdef MSWIN
- extern char *zipfn;
- #else
- extern char zipfn[];
- #endif
- extern local_file_header lrec;
- extern struct stat statbuf;
- extern longint cur_zipfile_bufstart;
-
- extern byte *outbuf;
- extern byte *outptr;
- #ifdef MSWIN
- extern byte _far *outout;
- #else
- extern byte *outout;
- #endif
- extern longint outpos;
- extern int outcnt;
- extern int outfd;
- #ifdef MSWIN
- extern char *filename;
- #else
- extern char filename[];
- #endif
-
- #ifdef DECLARE_ERRNO
- extern int errno;
- #endif
-
- #ifdef EBCDIC
- extern byte ebcdic[];
- #endif
-