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- /*---------------------------------------------------------------------------
-
- fileio.c
-
- This file contains routines for doing direct but relatively generic input/
- output, file-related sorts of things, plus some miscellaneous stuff. Most
- of the stuff has to do with opening, closing, reading and/or writing files.
-
- Contains: open_input_file()
- open_outfile() (non-VMS, non-AOS/VS, non-CMS_MVS)
- undefer_input()
- defer_leftover_input()
- readbuf()
- readbyte()
- fillinbuf()
- flush() (non-VMS)
- disk_error() (non-VMS)
- UzpMessagePrnt()
- UzpMessageNull() (DLL only)
- UzpInput()
- UzpMorePause()
- handler()
- dos_to_unix_time() (non-VMS, non-OS/2, non-VM/CMS, non-MVS)
- check_for_newer() (non-VMS, non-OS/2, non-VM/CMS, non-MVS)
- do_string()
- makeword()
- makelong()
- memset() (ZMEM only)
- memcpy() (ZMEM only)
- zstrnicmp()
- zstat() (REGULUS only)
- fLoadFarString() (SMALL_MEM only)
- fLoadFarStringSmall() (SMALL_MEM only)
- fLoadFarStringSmall2() (SMALL_MEM only)
- zfstrcpy() (SMALL_MEM only)
-
- ---------------------------------------------------------------------------*/
-
-
- #define FILEIO_C
- #define UNZIP_INTERNAL
- #include "unzip.h"
- #include "crypt.h"
- #include "ttyio.h"
- #include "ebcdic.h" /* definition/initialization of ebcdic[] */
-
-
- /*
- Note: Under Windows, the maximum size of the buffer that can be used
- with any of the *printf calls is 16,384, so win_fprintf was used to
- feed the fprintf clone no more than 16K chunks at a time. This should
- be valid for anything up to 64K (and probably beyond, assuming your
- buffers are that big.)
- */
- #ifdef MSWIN
- # define WriteError(buf,len,strm) \
- ((extent)win_fprintf(strm, (extent)len, (char *)buf) != (extent)(len))
- #else
- # ifdef USE_FWRITE
- # define WriteError(buf,len,strm) \
- ((extent)fwrite((char *)(buf),1,(extent)(len),strm) != (extent)(len))
- # else
- # define WriteError(buf,len,strm) \
- ((extent)write(fileno(strm),(char *)(buf),(extent)(len)) != (extent)(len))
- # endif
- #endif /* ?MSWIN */
-
- static int disk_error OF((__GPRO));
-
- #ifdef MSWIN
- extern int win_fprintf(FILE *file, unsigned int, char *);
- #endif
-
-
-
- /****************************/
- /* Strings used in fileio.c */
- /****************************/
-
- #ifdef UNIX
- static char Far CannotDeleteOldFile[] = "error: cannot delete old %s\n";
- #endif
-
- static char Far CantOpenZipfile[] = "error: can't open zipfile [ %s ]\n";
- #if (!defined(VMS) && !defined(AOS_VS) && !defined(CMS_MVS))
- static char Far CannotCreateFile[] = "error: cannot create %s\n";
- #endif
- #ifdef NOVELL_BUG_FAILSAFE
- static char Far NovellBug[] =
- "error: %s: stat() says does not exist, but fopen() found anyway\n";
- #endif
- static char Far ReadError[] = "error: zipfile read error\n";
- static char Far DiskFullQuery[] =
- "\n%s: write error (disk full?). Continue? (y/n/^C) ";
- static char Far ZipfileCorrupt[] = "error: zipfile probably corrupt (%s)\n";
- static char Far FilenameTooLongTrunc[] =
- "warning: filename too long--truncating.\n";
- static char Far ExtraFieldTooLong[] =
- "warning: extra field too long (%d). Ignoring...\n";
-
- #ifndef MSWIN
- # ifdef MORE
- static char Far MorePrompt[] = "--More--(%lu)";
- # endif
- static char Far QuitPrompt[] =
- "--- Press `Q' to quit, or any other key to continue ---";
- static char Far HidePrompt[] = /* "\r \r"; */
- "\r \r";
- #endif /* !MSWIN */
-
-
-
-
-
- /******************************/
- /* Function open_input_file() */
- /******************************/
-
- int open_input_file(__G) /* return 1 if open failed */
- __GDEF
- {
- /*
- * open the zipfile for reading and in BINARY mode to prevent cr/lf
- * translation, which would corrupt the bitstreams
- */
-
- #if (defined(UNIX) || defined(TOPS20) || defined(AOS_VS))
- G.zipfd = open(G.zipfn, O_RDONLY);
- #else /* !(UNIX || TOPS20 || AOS_VS) */
- #ifdef VMS
- G.zipfd = open(G.zipfn, O_RDONLY, 0, "ctx=stm");
- #else /* !VMS */
- #ifdef MACOS
- G.zipfd = open(G.zipfn, 0);
- #else /* !MACOS */
- #ifdef RISCOS
- G.zipfd = fopen(G.zipfn, "rb");
- #else /* !RISCOS */
- #ifdef CMS_MVS
- G.zipfd = vmmvs_open_infile(__G);
- #else /* !CMS_MVS */
- G.zipfd = open(G.zipfn, O_RDONLY | O_BINARY);
- #endif /* ?CMS_MVS */
- #endif /* ?RISCOS */
- #endif /* ?MACOS */
- #endif /* ?VMS */
- #endif /* ?(UNIX || TOPS20 || AOS_VS) */
-
- #ifdef USE_STRM_INPUT
- if (G.zipfd == NULL)
- #else
- if (G.zipfd < 0)
- #endif
- {
- Info(slide, 0x401, ((char *)slide, LoadFarString(CantOpenZipfile),
- G.zipfn));
- return 1;
- }
- return 0;
-
- } /* end function open_input_file() */
-
-
-
-
- #if (!defined(VMS) && !defined(AOS_VS) && !defined(CMS_MVS))
-
- /***************************/
- /* Function open_outfile() */
- /***************************/
-
- int open_outfile(__G) /* return 1 if fail */
- __GDEF
- {
- #ifdef DLL
- if (G.redirect_data)
- return redirect_outfile(__G)==FALSE;
- #endif
- #ifdef DOS_OS2_W32
- if (stat(G.filename, &G.statbuf) == 0) {
- Trace((stderr, "open_outfile: stat(%s) returns 0 (file exists)\n",
- G.filename));
- if (!(G.statbuf.st_mode & S_IWRITE)) {
- Trace((stderr, "open_outfile: existing file %s is read-only\n",
- G.filename));
- chmod(G.filename, S_IREAD | S_IWRITE);
- Trace((stderr, "open_outfile: %s now writable\n", G.filename));
- }
- if (unlink(G.filename) != 0)
- return 1;
- Trace((stderr, "open_outfile: %s now deleted\n", G.filename));
- }
- #endif /* DOS_OS2_W32 */
- #ifdef UNIX
- if (stat(G.filename, &G.statbuf) == 0 && unlink(G.filename) < 0) {
- Info(slide, 0x401, ((char *)slide, LoadFarString(CannotDeleteOldFile),
- G.filename));
- return 1;
- }
- #endif /* UNIX */
- #ifdef RISCOS
- if (SWI_OS_File_7(G.filename,0xDEADDEAD,0xDEADDEAD,G.lrec.ucsize)!=NULL) {
- Info(slide, 1, ((char *)slide, LoadFarString(CannotCreateFile),
- G.filename));
- return 1;
- }
- #endif /* RISCOS */
- #ifdef TOPS20
- char *tfilnam;
-
- if ((tfilnam = (char *)malloc(2*strlen(G.filename)+1)) == (char *)NULL)
- return 1;
- strcpy(tfilnam, G.filename);
- upper(tfilnam);
- enquote(tfilnam);
- if ((G.outfile = fopen(tfilnam, FOPW)) == (FILE *)NULL) {
- Info(slide, 1, ((char *)slide, LoadFarString(CannotCreateFile),
- tfilnam));
- free(tfilnam);
- return 1;
- }
- free(tfilnam);
- #else /* !TOPS20 */
- #ifdef MTS
- if (G.aflag)
- G.outfile = fopen(G.filename, FOPWT);
- else
- G.outfile = fopen(G.filename, FOPW);
- if (G.outfile == (FILE *)NULL) {
- Info(slide, 1, ((char *)slide, LoadFarString(CannotCreateFile),
- G.filename));
- return 1;
- }
- #else /* !MTS */
- #ifdef DEBUG
- Info(slide, 1, ((char *)slide,
- "open_outfile: doing fopen(%s) for reading\n", G.filename));
- if ((G.outfile = fopen(G.filename, FOPR)) == (FILE *)NULL)
- Info(slide, 1, ((char *)slide,
- "open_outfile: fopen(%s) for reading failed: does not exist\n",
- G.filename));
- else {
- Info(slide, 1, ((char *)slide,
- "open_outfile: fopen(%s) for reading succeeded: file exists\n",
- G.filename));
- fclose(G.outfile);
- }
- #endif /* DEBUG */
- #ifdef NOVELL_BUG_FAILSAFE
- if (G.dne && ((G.outfile = fopen(G.filename, FOPR)) != (FILE *)NULL)) {
- Info(slide, 0x401, ((char *)slide, LoadFarString(NovellBug),
- G.filename));
- fclose(G.outfile);
- return 1; /* with "./" fix in checkdir(), should never reach here */
- }
- #endif /* NOVELL_BUG_FAILSAFE */
- Trace((stderr, "open_outfile: doing fopen(%s) for writing\n", G.filename));
- if ((G.outfile = fopen(G.filename, FOPW)) == (FILE *)NULL) {
- Info(slide, 0x401, ((char *)slide, LoadFarString(CannotCreateFile),
- G.filename));
- return 1;
- }
- Trace((stderr, "open_outfile: fopen(%s) for writing succeeded\n",
- G.filename));
- #endif /* !MTS */
- #endif /* !TOPS20 */
-
- #if 0 /* this SUCKS! on Ultrix, it must be writing a byte at a time... */
- setbuf(G.outfile, (char *)NULL); /* make output unbuffered */
- #endif
-
- #ifdef USE_FWRITE
- #ifdef DOS_OS2_W32
- /* 16-bit MSC: buffer size must be strictly LESS than 32K (WSIZE): bogus */
- setbuf(G.outfile, (char *)NULL); /* make output unbuffered */
- #else /* !DOS_OS2_W32 */
- #ifndef RISCOS
- #ifdef _IOFBF /* make output fully buffered (works just about like write()) */
- setvbuf(G.outfile, (char *)slide, _IOFBF, WSIZE);
- #else
- setbuf(G.outfile, (char *)slide);
- #endif
- #endif /* !RISCOS */
- #endif /* ?DOS_OS2_W32 */
- #endif /* USE_FWRITE */
- return 0;
-
- } /* end function open_outfile() */
-
- #endif /* !VMS && !AOS_VS && !CMS_MVS */
-
-
-
-
-
- /*
- * These functions allow NEXTBYTE to function without needing two bounds
- * checks. Call defer_leftover_input() if you ever have filled G.inbuf
- * by some means other than readbyte(), and you then want to start using
- * NEXTBYTE. When going back to processing bytes without NEXTBYTE, call
- * undefer_input(). For example, extract_or_test_member brackets its
- * central section that does the decompression with these two functions.
- * If you need to check the number of bytes remaining in the current
- * file while using NEXTBYTE, check (G.csize + G.incnt), not G.csize.
- */
-
- /****************************/
- /* function undefer_input() */
- /****************************/
-
- void undefer_input(__G)
- __GDEF
- {
- if (G.incnt > 0)
- G.csize += G.incnt;
- if (G.incnt_leftover > 0) {
- /* We know that "(G.csize < MAXINT)" so we can cast G.csize to int:
- * This condition was checked when G.incnt_leftover was set > 0 in
- * defer_leftover_input(), and it is NOT allowed to touch G.csize
- * before calling undefer_input() when (G.incnt_leftover > 0)
- * (single exception: see read_byte()'s "G.csize <= 0" handling) !!
- */
- G.incnt = G.incnt_leftover + (int)G.csize;
- G.inptr = G.inptr_leftover - (int)G.csize;
- G.incnt_leftover = 0;
- } else if (G.incnt < 0)
- G.incnt = 0;
- } /* end function undefer_input() */
-
-
-
-
-
- /***********************************/
- /* function defer_leftover_input() */
- /***********************************/
-
- void defer_leftover_input(__G)
- __GDEF
- {
- if ((long)G.incnt > G.csize) {
- /* (G.csize < MAXINT), we can safely cast it to int !! */
- if (G.csize < 0L)
- G.csize = 0L;
- G.inptr_leftover = G.inptr + (int)G.csize;
- G.incnt_leftover = G.incnt - (int)G.csize;
- G.incnt = (int)G.csize;
- } else
- G.incnt_leftover = 0;
- G.csize -= G.incnt;
- } /* end function defer_leftover_input() */
-
-
-
-
-
- /**********************/
- /* Function readbuf() */
- /**********************/
-
- unsigned readbuf(__G__ buf, size) /* return number of bytes read into buf */
- __GDEF
- char *buf;
- register unsigned size;
- {
- register unsigned count;
- unsigned n;
-
- n = size;
- while (size) {
- if (G.incnt <= 0) {
- if ((G.incnt = read(G.zipfd, (char *)G.inbuf, INBUFSIZ)) == 0)
- return (n-size);
- else if (G.incnt < 0) {
- /* another hack, but no real harm copying same thing twice */
- (*G.message)((zvoid *)&G,
- (uch *)LoadFarString(ReadError), /* CANNOT use slide */
- (ulg)strlen(LoadFarString(ReadError)), 0x401);
- return 0; /* discarding some data; better than lock-up */
- }
- /* buffer ALWAYS starts on a block boundary: */
- G.cur_zipfile_bufstart += INBUFSIZ;
- G.inptr = G.inbuf;
- }
- count = MIN(size, (unsigned)G.incnt);
- memcpy(buf, G.inptr, count);
- buf += count;
- G.inptr += count;
- G.incnt -= count;
- size -= count;
- }
- return n;
-
- } /* end function readbuf() */
-
-
-
-
-
- /***********************/
- /* Function readbyte() */
- /***********************/
-
- int readbyte(__G) /* refill inbuf and return a byte if available, else EOF */
- __GDEF
- {
- if (G.mem_mode)
- return EOF;
- if (G.csize <= 0) {
- G.csize--; /* for tests done after exploding */
- G.incnt = 0;
- return EOF;
- }
- if (G.incnt <= 0) {
- if ((G.incnt = read(G.zipfd, (char *)G.inbuf, INBUFSIZ)) == 0) {
- G.incnt = 0; /* do not allow negative value to affect stuff */
- return EOF;
- } else if (G.incnt < 0) { /* "fail" (abort, retry, ...) returns this */
- /* another hack, but no real harm copying same thing twice */
- (*G.message)((zvoid *)&G,
- (uch *)LoadFarString(ReadError),
- (ulg)strlen(LoadFarString(ReadError)), 0x401);
- echon();
- DESTROYGLOBALS()
- exit(PK_BADERR); /* totally bailing; better than lock-up */
- }
- G.cur_zipfile_bufstart += INBUFSIZ; /* always starts on block bndry */
- G.inptr = G.inbuf;
- defer_leftover_input(__G); /* decrements G.csize */
- }
-
- #ifdef CRYPT
- if (G.pInfo->encrypted) {
- uch *p;
- int n;
-
- /* This was previously set to decrypt one byte beyond G.csize, when
- * incnt reached that far. GRR said, "but it's required: why?" This
- * was a bug in fillinbuf() -- was it also a bug here?
- */
- for (n = G.incnt, p = G.inptr; n--; p++)
- zdecode(*p);
- }
- #endif /* CRYPT */
-
- --G.incnt;
- return *G.inptr++;
-
- } /* end function readbyte() */
-
-
-
-
-
- #ifdef USE_ZLIB
-
- /************************/
- /* Function fillinbuf() */
- /************************/
-
- int fillinbuf(__G) /* like readbyte() except returns number of bytes in inbuf */
- __GDEF
- {
- if (G.mem_mode ||
- (G.incnt = read(G.zipfd, (char *)G.inbuf, INBUFSIZ)) <= 0)
- return 0;
- G.cur_zipfile_bufstart += INBUFSIZ; /* always starts on a block boundary */
- G.inptr = G.inbuf;
- defer_leftover_input(__G); /* decrements G.csize */
-
- #ifdef CRYPT
- if (G.pInfo->encrypted) {
- uch *p;
- int n;
-
- for (n = G.incnt, p = G.inptr; n--; p++)
- zdecode(*p);
- }
- #endif /* CRYPT */
-
- return G.incnt;
-
- } /* end function fillinbuf() */
-
- #endif /* USE_ZLIB */
-
-
-
-
-
- #ifndef VMS /* for VMS use code in vms.c */
-
- /********************/
- /* Function flush() */
- /********************/
-
- int flush(__G__ rawbuf, size, unshrink) /* cflag => always 0; 50 if write error */
- __GDEF
- uch *rawbuf;
- ulg size;
- int unshrink;
- {
- register uch *p, *q;
- uch *transbuf;
- #if (defined(SMALL_MEM) || defined(MED_MEM))
- ulg transbufsiz;
- #endif
- /* static int didCRlast = FALSE; moved to globals.h */
-
-
- /*---------------------------------------------------------------------------
- Compute the CRC first; if testing or if disk is full, that's it.
- ---------------------------------------------------------------------------*/
-
- G.crc32val = crc32(G.crc32val, rawbuf, (extent)size);
-
- if (G.tflag || size == 0L) /* testing or nothing to write: all done */
- return 0;
-
- if (G.disk_full)
- return 50; /* disk already full: ignore rest of file */
-
- /*---------------------------------------------------------------------------
- Write the bytes rawbuf[0..size-1] to the output device, first converting
- end-of-lines and ASCII/EBCDIC as needed. If SMALL_MEM or MED_MEM are NOT
- defined, outbuf is assumed to be at least as large as rawbuf and is not
- necessarily checked for overflow.
- ---------------------------------------------------------------------------*/
-
- if (!G.pInfo->textmode) { /* write raw binary data */
- /* GRR: note that for standard MS-DOS compilers, size argument to
- * fwrite() can never be more than 65534, so WriteError macro will
- * have to be rewritten if size can ever be that large. For now,
- * never more than 32K. Also note that write() returns an int, which
- * doesn't necessarily limit size to 32767 bytes if write() is used
- * on 16-bit systems but does make it more of a pain; however, because
- * at least MSC 5.1 has a lousy implementation of fwrite() (as does
- * DEC Ultrix cc), write() is used anyway.
- */
- #ifdef DLL
- if (G.redirect_data)
- writeToMemory(__G__ rawbuf, (unsigned)(q-transbuf));
- else
- #endif
- if (!G.cflag && WriteError(rawbuf, size, G.outfile))
- return disk_error(__G);
- else if (G.cflag && (*G.message)((zvoid *)&G, rawbuf, size, 0))
- return 0;
- } else {
- if (unshrink) {
- /* rawbuf = outbuf */
- transbuf = G.outbuf2;
- #if (defined(SMALL_MEM) || defined(MED_MEM))
- transbufsiz = TRANSBUFSIZ;
- #endif
- } else {
- /* rawbuf = slide */
- transbuf = G.outbuf;
- #if (defined(SMALL_MEM) || defined(MED_MEM))
- transbufsiz = OUTBUFSIZ;
- Trace((stderr, "\ntransbufsiz = OUTBUFSIZ = %u\n", OUTBUFSIZ));
- #endif
- }
- if (G.newfile) {
- G.didCRlast = FALSE; /* no previous buffers written */
- G.newfile = FALSE;
- }
- p = rawbuf;
- if (*p == LF && G.didCRlast)
- ++p;
-
- /*-----------------------------------------------------------------------
- Algorithm: CR/LF => native; lone CR => native; lone LF => native.
- This routine is only for non-raw-VMS, non-raw-VM/CMS files (i.e.,
- stream-oriented files, not record-oriented).
- -----------------------------------------------------------------------*/
-
- G.didCRlast = FALSE;
- for (q = transbuf; p < rawbuf+(unsigned)size; ++p) {
- if (*p == CR) { /* lone CR or CR/LF: EOL either way */
- PutNativeEOL
- if (p == rawbuf+(unsigned)size-1) /* last char in buffer */
- G.didCRlast = TRUE;
- else if (p[1] == LF) /* get rid of accompanying LF */
- ++p;
- } else if (*p == LF) /* lone LF */
- PutNativeEOL
- else
- #ifndef DOS_OS2_W32
- if (*p != CTRLZ) /* lose all ^Z's */
- #endif
- *q++ = native(*p);
-
- #if (defined(SMALL_MEM) || defined(MED_MEM))
- # if (lenEOL == 1) /* don't check unshrink: both buffers small but equal */
- if (!unshrink)
- # endif
- /* check for danger of buffer overflow and flush */
- if (q > transbuf+(unsigned)transbufsiz-lenEOL) {
- Trace((stderr,
- "p - rawbuf = %u q-transbuf = %u size = %lu\n",
- (unsigned)(p-rawbuf), (unsigned)(q-transbuf), size));
- if (!G.cflag &&
- WriteError(transbuf, (unsigned)(q-transbuf),G.outfile))
- return disk_error(__G);
- else if (G.cflag && (*G.message)((zvoid *)&G, transbuf,
- (ulg)(q-transbuf), 0))
- return 0;
- q = transbuf;
- continue;
- }
- #endif /* SMALL_MEM || MED_MEM */
- }
-
- /*-----------------------------------------------------------------------
- Done translating: write whatever we've got to file (or screen).
- -----------------------------------------------------------------------*/
-
- Trace((stderr, "p - rawbuf = %u q-transbuf = %u size = %lu\n",
- (unsigned)(p-rawbuf), (unsigned)(q-transbuf), size));
- if (q > transbuf)
- #ifdef DLL
- if (G.redirect_data)
- writeToMemory(__G__ transbuf, (unsigned)(q-transbuf));
- else
- #endif
- if (!G.cflag && WriteError(transbuf, (unsigned)(q-transbuf),
- G.outfile))
- return disk_error(__G);
- else if (G.cflag && (*G.message)((zvoid *)&G, transbuf,
- (ulg)(q-transbuf), 0))
- return 0;
- }
-
- return 0;
-
- } /* end function flush() */
-
-
-
-
-
- /*************************/
- /* Function disk_error() */
- /*************************/
-
- static int disk_error(__G)
- __GDEF
- {
- /* OK to use slide[] here because this file is finished regardless */
- Info(slide, 0x481, ((char *)slide, LoadFarString(DiskFullQuery), G.filename));
-
- #ifndef MSWIN
- fgets(G.answerbuf, 9, stdin);
- if (*G.answerbuf == 'y') /* stop writing to this file */
- G.disk_full = 1; /* (outfile bad?), but new OK */
- else
- #endif
- G.disk_full = 2; /* no: exit program */
-
- return PK_DISK;
-
- } /* end function disk_error() */
-
- #endif /* !VMS */
-
-
-
-
-
- /*****************************/
- /* Function UzpMessagePrnt() */
- /*****************************/
-
- int UzpMessagePrnt(pG, buf, size, flag)
- zvoid *pG; /* globals struct: always passed */
- uch *buf; /* preformatted string to be printed */
- ulg size; /* length of string (may include nulls) */
- int flag; /* flag bits */
- {
- /* Important NOTE:
- * The name of the first parameter of UzpMessagePrnt(), which passes
- * the struct Globals address, >>> MUST <<< be identical to the string
- * expansion of the __G__ macro in the REENTRANT case (see globals.h).
- * This name identity is mandatory for the LoadFarString() macro
- * (in the SMALL_MEM case) !!!
- */
- int error;
- uch *q=buf, *endbuf=buf+(unsigned)size;
- #ifdef MORE
- uch *p=buf-1;
- #endif
- FILE *outfp;
-
-
- /*---------------------------------------------------------------------------
- These tests are here to allow fine-tuning of UnZip's output messages,
- but none of them will do anything without setting the appropriate bit
- in the flag argument of every Info() statement which is to be turned
- *off*. That is, all messages are currently turned on for all ports.
- To turn off *all* messages, use the UzpMessageNull() function instead
- of this one.
- ---------------------------------------------------------------------------*/
-
- #if (defined(OS2) && defined(DLL))
- if (MSG_NO_DLL2(flag)) /* if OS/2 DLL bit is set, do NOT print this msg */
- return 0;
- #endif
- #ifdef WINDLL
- if (MSG_NO_WDLL(flag))
- return 0;
- #endif
- #ifdef MSWIN
- if (MSG_NO_WGUI(flag))
- return 0;
- #endif
- /*
- #ifdef ACORN_GUI
- if (MSG_NO_AGUI(flag))
- return 0;
- #endif
- */
- #ifdef DLL /* don't display message if data is redirected */
- if (((struct Globals *)pG)->redirect_data &&
- !((struct Globals *)pG)->redirect_text)
- return 0;
- #endif
-
- if (MSG_STDERR(flag) && !((struct Globals *)pG)->tflag)
- outfp = (FILE *)stderr;
- else
- outfp = (FILE *)stdout;
-
- #ifdef MPW
- if (MSG_MNEWLN(flag)) { /* assumes writable buffer (e.g., slide[]) */
- *endbuf++ = '\n'; /* with room for one more char at end of buf */
- ++size; /* (safe assumption: only used for four */
- } /* short queries in extract.c and fileio.c) */
- #endif
-
- if (MSG_TNEWLN(flag)) { /* again assumes writable buffer: fragile... */
- if ((!size && !((struct Globals *)pG)->sol) ||
- (size && (endbuf[-1] != '\n')))
- {
- *endbuf++ = '\n';
- ++size;
- }
- }
-
- if (MSG_LNEWLN(flag) && !((struct Globals *)pG)->sol) {
- /* not at start of line: want newline */
- #ifdef DLL
- if (!((struct Globals *)pG)->redirect_text) {
- #endif
- putc('\n', outfp); /* "more" will be off by one...oops */
- fflush(outfp);
- if (MSG_STDERR(flag) && ((struct Globals *)pG)->tflag &&
- !isatty(1) && isatty(2))
- {
- /* error output from testing redirected: also send to stderr */
- putc('\n', stderr);
- fflush(stderr);
- }
- #ifdef DLL
- } else
- REDIRECTC('\n');
- #endif
- ((struct Globals *)pG)->sol = TRUE;
- }
-
- /* put zipfile name, filename and/or error/warning keywords here */
-
- #ifdef MORE
- /* room for --More-- and one line of overlap: */
- ((struct Globals *)pG)->height = SCREENLINES - 2;
-
- if (((struct Globals *)pG)->M_flag
- #ifdef DLL
- && !((struct Globals *)pG)->redirect_text
- #endif
- )
- {
- while (++p < endbuf) {
- if (*p == '\n') {
- ++((struct Globals *)pG)->numlines;
- if (((struct Globals *)pG)->numlines %
- ((struct Globals *)pG)->height == 0L) /* GRR: fix */
- {
- if ((error = WriteError(q, p-q+1, outfp)) != 0)
- return error;
- fflush(outfp);
- ((struct Globals *)pG)->sol = TRUE;
- q = p + 1;
- (*((struct Globals *)pG)->mpause)((zvoid *)pG,
- LoadFarString(MorePrompt), 1);
- }
- }
- } /* end while */
- size = (ulg)(p - q); /* remaining text */
- }
- #endif /* MORE */
-
- if (size) {
- #ifdef DLL
- if (!((struct Globals *)pG)->redirect_text) {
- #endif
- if ((error = WriteError(q, size, outfp)) != 0)
- return error;
- fflush(outfp);
- if (MSG_STDERR(flag) && ((struct Globals *)pG)->tflag &&
- !isatty(1) && isatty(2))
- {
- /* error output from testing redirected: also send to stderr */
- if ((error = WriteError(q, size, stderr)) != 0)
- return error;
- fflush(stderr);
- }
- #ifdef DLL
- } else {
- REDIRECTPRINT(q, size); /* GRR: this is ugly: hide with macro */
- }
- #endif
- ((struct Globals *)pG)->sol = (endbuf[-1] == '\n');
- }
- return 0;
-
- } /* end function UzpMessagePrnt() */
-
-
-
-
-
- #ifdef DLL
-
- /*****************************/
- /* Function UzpMessageNull() */ /* convenience routine for no output at all */
- /*****************************/
-
- int UzpMessageNull(pG, buf, size, flag)
- zvoid *pG; /* globals struct: always passed */
- uch *buf; /* preformatted string to be printed */
- ulg size; /* length of string (may include nulls) */
- int flag; /* flag bits */
- {
- return 0;
-
- } /* end function UzpMessageNull() */
-
- #endif /* DLL */
-
-
-
-
-
- /***********************/
- /* Function UzpInput() */ /* GRR: this is a placeholder for now */
- /***********************/
-
- int UzpInput(pG, buf, size, flag)
- zvoid *pG; /* globals struct: always passed */
- uch *buf; /* preformatted string to be printed */
- int *size; /* (address of) size of buf and of returned string */
- int flag; /* flag bits (bit 0: no echo) */
- {
- *size = 0;
- return 0;
-
- } /* end function UzpInput() */
-
-
-
-
-
- #if (!defined(MSWIN) && !defined(MACOS))
-
- /***************************/
- /* Function UzpMorePause() */
- /***************************/
-
- void UzpMorePause(pG, prompt, flag)
- zvoid *pG; /* globals struct: always passed */
- const char *prompt; /* "--More--" prompt */
- int flag; /* 0 = any char OK; 1 = accept only '\n', ' ', q */
- {
- uch c;
-
- /*---------------------------------------------------------------------------
- Print a prompt and wait for the user to press a key, then erase prompt
- if possible.
- ---------------------------------------------------------------------------*/
-
- if (!((struct Globals *)pG)->sol)
- fprintf(stderr, "\n");
- /* numlines may or may not be used: */
- fprintf(stderr, prompt, ((struct Globals *)pG)->numlines);
- fflush(stderr);
- if (flag & 1) {
- do {
- c = (uch)FGETCH(0);
- } while (c != '\r' && c != '\n' && c != ' ' && c != 'q' && c != 'Q');
- } else
- c = (uch)FGETCH(0);
-
- /* newline was not echoed, so cover up prompt line */
- fprintf(stderr, LoadFarString(HidePrompt));
- fflush(stderr);
-
- if (ToLower(c) == 'q') {
- DESTROYGLOBALS()
- EXIT(PK_COOL);
- }
-
- ((struct Globals *)pG)->sol = TRUE;
-
- } /* end function UzpMorePause() */
-
- #endif /* !MSWIN && !MACOS */
-
-
-
-
-
- /**********************/
- /* Function handler() */
- /**********************/
-
- void handler(signal) /* upon interrupt, turn on echo and exit cleanly */
- int signal;
- {
- GETGLOBALS();
-
- #if !(defined(SIGBUS) || defined(SIGSEGV)) /* add a newline if not at */
- (*G.message)((zvoid *)&G, slide, 0L, 0x41); /* start of line (to stderr; */
- #endif /* slide[] should be safe) */
-
- echon();
-
- #ifdef SIGBUS
- if (signal == SIGBUS) {
- Info(slide, 0x421, ((char *)slide, LoadFarString(ZipfileCorrupt),
- "bus error"));
- DESTROYGLOBALS()
- EXIT(PK_BADERR);
- }
- #endif /* SIGBUS */
-
- #ifdef SIGSEGV
- if (signal == SIGSEGV) {
- Info(slide, 0x421, ((char *)slide, LoadFarString(ZipfileCorrupt),
- "segmentation violation"));
- DESTROYGLOBALS()
- EXIT(PK_BADERR);
- }
- #endif /* SIGSEGV */
-
- /* probably ctrl-C */
- DESTROYGLOBALS()
- EXIT(PK_ERR); /* was EXIT(0) */
- }
-
-
-
-
-
- #if (!defined(VMS) && !defined(OS2) && !defined(CMS_MVS))
- #ifdef MSWIN
- # ifndef timezone
- # define timezone _timezone
- # endif
- #endif
-
- /*******************************/
- /* Function dos_to_unix_time() */ /* only used for freshening/updating */
- /*******************************/
-
- time_t dos_to_unix_time(ddate, dtime)
- unsigned ddate, dtime;
- {
- time_t m_time;
- int yr, mo, dy, hh, mm, ss;
- #ifdef TOPS20
- # define YRBASE 1900
- struct tmx *tmx;
- char temp[20];
- #else /* !TOPS20 */
- # define YRBASE 1970
- static short yday[]={0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334};
- int leap;
- unsigned days;
- #if (!defined(MACOS) && !defined(RISCOS))
- #ifndef BSD4_4 /* GRR: change to !defined(MODERN) ? */
- #if (defined(BSD) || defined(MTS) || defined(__GO32__))
- struct timeb tbp;
- #else /* !(BSD || MTS || __GO32__) */
- #ifdef DECLARE_TIMEZONE
- extern time_t timezone;
- #endif
- #endif /* ?(BSD || MTS || __GO32__) */
- #endif /* !BSD4_4 */
- #endif /* !MACOS && !RISCOS */
- #endif /* ?TOPS20 */
-
-
- /* dissect date */
- yr = ((ddate >> 9) & 0x7f) + (1980 - YRBASE);
- mo = ((ddate >> 5) & 0x0f) - 1;
- dy = (ddate & 0x1f) - 1;
-
- /* dissect time */
- hh = (dtime >> 11) & 0x1f;
- mm = (dtime >> 5) & 0x3f;
- ss = (dtime & 0x1f) * 2;
-
- #ifdef TOPS20
- tmx = (struct tmx *)malloc(sizeof(struct tmx));
- sprintf (temp, "%02d/%02d/%02d %02d:%02d:%02d", mo+1, dy+1, yr, hh, mm, ss);
- time_parse(temp, tmx, (char *)0);
- m_time = time_make(tmx);
- free(tmx);
-
- #else /* !TOPS20 */
- /* leap = # of leap yrs from YRBASE up to but not including current year */
- leap = ((yr + YRBASE - 1) / 4); /* leap year base factor */
-
- /* calculate days from BASE to this year and add expired days this year */
- days = (yr * 365) + (leap - 492) + yday[mo];
-
- /* if year is a leap year and month is after February, add another day */
- if ((mo > 1) && ((yr+YRBASE)%4 == 0) && ((yr+YRBASE) != 2100))
- ++days; /* OK through 2199 */
-
- /* convert date & time to seconds relative to 00:00:00, 01/01/YRBASE */
- m_time = (time_t)((long)(days + dy) * 86400L + (long)hh * 3600L +
- (long)(mm * 60 + ss));
- /* - 1; MS-DOS times always rounded up to nearest even second */
- TTrace((stderr, "dos_to_unix_time:\n"));
- TTrace((stderr, " m_time before timezone = %ld\n", (long)m_time));
-
- #if (!defined(MACOS) && !defined(RISCOS))
- /* adjust for local standard timezone offset */
- #if (defined(BSD) || defined(MTS) || defined(__GO32__))
- #ifdef BSD4_4
- m_time -= localtime(&m_time)->tm_gmtoff; /* sec. EAST of GMT: subtr. */
- #else /* !BSD4_4 */
- ftime(&tbp); /* get `timezone' */
- m_time += tbp.timezone * 60L; /* seconds WEST of GMT: add */
- #endif /* ?BSD4_4 */
- #else /* !(BSD || MTS || __GO32__) */
- #ifdef WIN32
- {
- TIME_ZONE_INFORMATION tzinfo;
- DWORD res;
-
- /* account for timezone differences */
- res = GetTimeZoneInformation(&tzinfo);
- if (res == TIME_ZONE_ID_STANDARD)
- m_time += 60*(tzinfo.Bias + tzinfo.StandardBias);
- else if (res == TIME_ZONE_ID_DAYLIGHT)
- m_time += 60*(tzinfo.Bias + tzinfo.DaylightBias);
- /* GRR: are other return-values possible? */
- }
- #else /* !WIN32 */
- tzset(); /* set `timezone' variable */
- m_time += timezone; /* seconds WEST of GMT: add */
- #endif /* ?WIN32 */
- #endif /* ?(BSD || MTS || __GO32__) */
-
- TTrace((stderr, " m_time after timezone = %ld\n", (long)m_time));
- #endif /* !MACOS && !RISCOS */
-
- #ifndef WIN32
- #ifndef BSD4_4 /* (DST already added to tm_gmtoff, so skip tm_isdst) */
- /* adjust for local daylight savings (summer) time */
- if (localtime((time_t *)&m_time)->tm_isdst)
- m_time -= 60L * 60L; /* adjust for daylight savings time */
-
- TTrace((stderr, " m_time after DST = %ld\n", (long)m_time));
- #endif /* !BSD4_4 */
- #endif /* !WIN32 */
-
- #endif /* ?TOPS20 */
-
- return m_time;
-
- } /* end function dos_to_unix_time() */
-
-
-
-
-
- /******************************/
- /* Function check_for_newer() */ /* used for overwriting/freshening/updating */
- /******************************/
-
- int check_for_newer(__G__ filename) /* return 1 if existing file is newer */
- __GDEF /* or equal; 0 if older; -1 if doesn't */
- char *filename; /* exist yet */
- {
- time_t existing, archive;
- #ifdef USE_EF_UX_TIME
- ztimbuf z_utime;
- #endif
- #ifdef AOS_VS
- long dmm, ddd, dyy, dhh, dmin, dss;
-
-
- dmm = (lrec.last_mod_file_date >> 5) & 0x0f;
- ddd = lrec.last_mod_file_date & 0x1f;
- dyy = (lrec.last_mod_file_date >> 9) + 1980;
- dhh = (lrec.last_mod_file_time >> 11) & 0x1f;
- dmin = (lrec.last_mod_file_time >> 5) & 0x3f;
- dss = (lrec.last_mod_file_time & 0x1f) * 2;
-
- /* under AOS/VS, file times can only be set at creation time,
- * with the info in a special DG format. Make sure we can create
- * it here - we delete it later & re-create it, whether or not
- * it exists now.
- */
- if (!zvs_create(filename, (((ulg)dgdate(dmm, ddd, dyy)) << 16) |
- (dhh*1800L + dmin*30L + dss/2L), -1L, -1L, (char *) -1, -1, -1, -1))
- return DOES_NOT_EXIST;
- #endif /* AOS_VS */
-
- Trace((stderr, "check_for_newer: doing stat(%s)\n", filename));
- if (stat(filename, &G.statbuf)) {
- Trace((stderr,
- "check_for_newer: stat(%s) returns %d: file does not exist\n",
- filename, stat(filename, &G.statbuf)));
- return DOES_NOT_EXIST;
- }
- Trace((stderr, "check_for_newer: stat(%s) returns 0: file exists\n",
- filename));
-
- #ifdef USE_EF_UX_TIME
- /* The `Unix extra field mtime' should be used for comparison with the
- * time stamp of the existing file >>>ONLY<<< when the EF info is also
- * used to set the modification time of the extracted file.
- * Currently, this is only the case for systems that incorporate
- * the OS specific code from the "unix/" subdirectory.
- */
- if (G.extra_field &&
- ef_scan_for_izux(G.extra_field, G.lrec.extra_field_length,
- &z_utime, NULL) > 0) {
- TTrace((stderr, "check_for_newer: using Unix extra field mtime\n"));
- existing = G.statbuf.st_mtime;
- archive = z_utime.modtime;
- } else {
- /* round up existing filetime to nearest 2 seconds for comparison */
- existing = G.statbuf.st_mtime & 1 ? G.statbuf.st_mtime + 1
- : G.statbuf.st_mtime;
- archive = dos_to_unix_time(G.lrec.last_mod_file_date,
- G.lrec.last_mod_file_time);
- }
- #else /* !USE_EF_UX_TIME */
- /* round up existing filetime to nearest 2 seconds for comparison */
- existing = G.statbuf.st_mtime & 1 ? G.statbuf.st_mtime + 1
- : G.statbuf.st_mtime;
- archive = dos_to_unix_time(G.lrec.last_mod_file_date,
- G.lrec.last_mod_file_time);
- #endif /* ?USE_EF_UX_TIME */
-
- TTrace((stderr, "check_for_newer: existing %ld, archive %ld, e-a %ld\n",
- existing, archive, existing-archive));
-
- return (existing >= archive);
-
- } /* end function check_for_newer() */
-
- #endif /* !VMS && !OS2 && !CMS_MVS */
-
-
-
-
-
- /************************/
- /* Function do_string() */
- /************************/
-
- int do_string(__G__ len, option) /* return PK-type error code */
- __GDEF
- unsigned int len; /* without prototype, ush converted to this */
- int option;
- {
- long comment_bytes_left, block_length;
- int error=PK_OK;
- ush extra_len;
- #ifdef AMIGA
- char tmp_filenote[2 * AMIGA_FILENOTELEN]; /* extra room for squozen chars */
- #endif
-
-
- /*---------------------------------------------------------------------------
- This function processes arbitrary-length (well, usually) strings. Four
- options are allowed: SKIP, wherein the string is skipped (pretty logical,
- eh?); DISPLAY, wherein the string is printed to standard output after un-
- dergoing any necessary or unnecessary character conversions; DS_FN,
- wherein the string is put into the filename[] array after undergoing ap-
- propriate conversions (including case-conversion, if that is indicated:
- see the global variable pInfo->lcflag); and EXTRA_FIELD, wherein the
- `string' is assumed to be an extra field and is copied to the (freshly
- malloced) buffer G.extra_field. The third option should be OK since
- filename is dimensioned at 1025, but we check anyway.
-
- The string, by the way, is assumed to start at the current file-pointer
- position; its length is given by len. So start off by checking length
- of string: if zero, we're already done.
- ---------------------------------------------------------------------------*/
-
- if (!len)
- return PK_COOL;
-
- switch (option) {
-
- /*
- * First case: print string on standard output. First set loop vari-
- * ables, then loop through the comment in chunks of OUTBUFSIZ bytes,
- * converting formats and printing as we go. The second half of the
- * loop conditional was added because the file might be truncated, in
- * which case comment_bytes_left will remain at some non-zero value for
- * all time. outbuf and slide are used as scratch buffers because they
- * are available (we should be either before or in between any file pro-
- * cessing).
- */
-
- case DISPLAY:
- comment_bytes_left = len;
- block_length = OUTBUFSIZ; /* for the while statement, first time */
- while (comment_bytes_left > 0 && block_length > 0) {
- register uch *p = G.outbuf;
- register uch *q = G.outbuf;
-
- if ((block_length = readbuf(__G__ (char *)G.outbuf,
- (unsigned) MIN((long)OUTBUFSIZ, comment_bytes_left))) == 0)
- return PK_EOF;
- comment_bytes_left -= block_length;
-
- /* this is why we allocated an extra byte for outbuf: terminate
- * with zero (ASCIIZ) */
- G.outbuf[(unsigned)block_length] = '\0';
-
- /* remove all ASCII carriage returns from comment before printing
- * (since used before A_TO_N(), check for CR instead of '\r')
- */
- while (*p) {
- while (*p == CR)
- ++p;
- *q++ = *p++;
- }
- /* could check whether (p - outbuf) == block_length here */
- *q = '\0';
-
- A_TO_N(G.outbuf); /* translate string to native */
-
- #ifdef MSWIN
- /* ran out of local mem -- had to cheat */
- win_fprintf(stdout, len, (char *)G.outbuf);
- win_fprintf(stdout, 2, (char *)"\n\n");
- #else /* !MSWIN */
- #ifdef NATIVE /* GRR: can ANSI be used with EBCDIC? */
- (*G.message)((zvoid *)&G, G.outbuf, (ulg)(q-G.outbuf), 0);
- #else /* ASCII */
- p = G.outbuf - 1;
- q = slide;
- while (*++p) {
- int pause = FALSE;
-
- if (*p == 0x1B) { /* ASCII escape char */
- *q++ = '^';
- *q++ = '[';
- } else if (*p == 0x13) { /* ASCII ^S (pause) */
- pause = TRUE;
- if (p[1] == 0x0a) /* ASCII LF */
- *q++ = *++p;
- else if (p[1] == 0x0d && p[2] == 0x0a) { /* ASCII CR LF */
- *q++ = *++p;
- *q++ = *++p;
- }
- } else
- *q++ = *p;
- if ((unsigned)(q-slide) > WSIZE-3 || pause) { /* flush */
- (*G.message)((zvoid *)&G, slide, (ulg)(q-slide), 0);
- q = slide;
- if (pause)
- (*G.mpause)((zvoid *)&G, LoadFarString(QuitPrompt), 0);
- }
- }
- (*G.message)((zvoid *)&G, slide, (ulg)(q-slide), 0);
- #endif /* ?NATIVE */
- #endif /* ?MSWIN */
- }
- /* add '\n' if not at start of line */
- (*G.message)((zvoid *)&G, slide, 0L, 0x40);
- break;
-
- /*
- * Second case: read string into filename[] array. The filename should
- * never ever be longer than FILNAMSIZ-1 (1024), but for now we'll check,
- * just to be sure.
- */
-
- case DS_FN:
- extra_len = 0;
- if (len >= FILNAMSIZ) {
- Info(slide, 0x401, ((char *)slide,
- LoadFarString(FilenameTooLongTrunc)));
- error = PK_WARN;
- extra_len = (ush)(len - FILNAMSIZ + 1);
- len = FILNAMSIZ - 1;
- }
- if (readbuf(__G__ G.filename, len) == 0)
- return PK_EOF;
- G.filename[len] = '\0'; /* terminate w/zero: ASCIIZ */
-
- A_TO_N(G.filename); /* translate string to native */
-
- if (G.pInfo->lcflag) /* replace with lowercase filename */
- TOLOWER(G.filename, G.filename);
-
- if (G.pInfo->vollabel && len > 8 && G.filename[8] == '.') {
- char *p = G.filename+8;
- while (*p++)
- p[-1] = *p; /* disk label, and 8th char is dot: remove dot */
- }
-
- if (!extra_len) /* we're done here */
- break;
-
- /*
- * We truncated the filename, so print what's left and then fall
- * through to the SKIP routine.
- */
- Info(slide, 0x401, ((char *)slide, "[ %s ]\n", G.filename));
- len = extra_len;
- /* FALL THROUGH... */
-
- /*
- * Third case: skip string, adjusting readbuf's internal variables
- * as necessary (and possibly skipping to and reading a new block of
- * data).
- */
-
- case SKIP:
- /* cur_zipfile_bufstart already takes account of extra_bytes, so don't
- * correct for it twice: */
- ZLSEEK(G.cur_zipfile_bufstart - G.extra_bytes +
- (G.inptr-G.inbuf) + len)
- break;
-
- /*
- * Fourth case: assume we're at the start of an "extra field"; malloc
- * storage for it and read data into the allocated space.
- */
-
- case EXTRA_FIELD:
- if (G.extra_field != (uch *)NULL)
- free(G.extra_field);
- if ((G.extra_field = (uch *)malloc(len)) == (uch *)NULL) {
- Info(slide, 0x401, ((char *)slide, LoadFarString(ExtraFieldTooLong),
- len));
- /* cur_zipfile_bufstart already takes account of extra_bytes,
- * so don't correct for it twice: */
- ZLSEEK(G.cur_zipfile_bufstart - G.extra_bytes +
- (G.inptr-G.inbuf) + len)
- } else
- if (readbuf(__G__ (char *)G.extra_field, len) == 0)
- return PK_EOF;
- break;
-
- #ifdef AMIGA
- /*
- * Fifth case, for the Amiga only: take the comment that would ordinarily
- * be skipped over, and turn it into a 79 character string that will be
- * attached to the file as a "filenote" after it is extracted.
- */
-
- case FILENOTE:
- if ((extra_len = readbuf(__G__ tmp_filenote, (unsigned)
- MIN(len, 2 * AMIGA_FILENOTELEN - 1))) == 0)
- return PK_EOF;
- if ((len -= extra_len) > 0) /* treat remainder as in case SKIP: */
- ZLSEEK(G.cur_zipfile_bufstart - G.extra_bytes
- + (G.inptr - G.inbuf) + len)
- /* convert multi-line text into single line with no ctl-chars: */
- tmp_filenote[extra_len] = '\0';
- while ((int) --extra_len >= 0)
- if ((unsigned) tmp_filenote[extra_len] < ' ')
- if (tmp_filenote[extra_len+1] == ' ') /* no excess */
- strcpy(tmp_filenote+extra_len, tmp_filenote+extra_len+1);
- else
- tmp_filenote[extra_len] = ' ';
- tmp_filenote[AMIGA_FILENOTELEN - 1] = '\0';
- if (G.filenotes[G.filenote_slot])
- free(G.filenotes[G.filenote_slot]); /* should not happen */
- G.filenotes[G.filenote_slot] = NULL;
- if (tmp_filenote[0]) {
- if (!(G.filenotes[G.filenote_slot] = malloc(strlen(tmp_filenote)+1)))
- return PK_MEM;
- strcpy(G.filenotes[G.filenote_slot], tmp_filenote);
- }
- break;
- #endif /* AMIGA */
-
- } /* end switch (option) */
-
- return error;
-
- } /* end function do_string() */
-
-
-
-
-
- /***********************/
- /* Function makeword() */
- /***********************/
-
- ush makeword(b)
- uch *b;
- {
- /*
- * Convert Intel style 'short' integer to non-Intel non-16-bit
- * host format. This routine also takes care of byte-ordering.
- */
- return (ush)((b[1] << 8) | b[0]);
- }
-
-
-
-
-
- /***********************/
- /* Function makelong() */
- /***********************/
-
- ulg makelong(sig)
- uch *sig;
- {
- /*
- * Convert intel style 'long' variable to non-Intel non-16-bit
- * host format. This routine also takes care of byte-ordering.
- */
- return (((ulg)sig[3]) << 24)
- + (((ulg)sig[2]) << 16)
- + (((ulg)sig[1]) << 8)
- + ((ulg)sig[0]);
- }
-
-
-
-
-
- #ifdef ZMEM /* memset/memcpy for systems without either them or bzero/bcopy */
- /* (no known systems as of 960211) */
-
- /*********************/
- /* Function memset() */
- /*********************/
-
- zvoid *memset(buf, init, len)
- register zvoid *buf; /* buffer location */
- register int init; /* initializer character */
- register unsigned int len; /* length of the buffer */
- {
- zvoid *start;
-
- start = buf;
- while (len--)
- *((char *)buf++) = (char)init;
- return start;
- }
-
-
-
-
-
- /*********************/
- /* Function memcpy() */
- /*********************/
-
- zvoid *memcpy(dst, src, len)
- register zvoid *dst;
- register const zvoid *src;
- register unsigned int len;
- {
- zvoid *start;
-
- start = dst;
- while (len-- > 0)
- *((char *)dst)++ = *((char *)src)++;
- return start;
- }
-
- #endif /* ZMEM */
-
-
-
-
-
- /************************/
- /* Function zstrnicmp() */
- /************************/
-
- int zstrnicmp(s1, s2, n)
- register const char *s1, *s2;
- register unsigned n;
- {
- for (; n > 0; --n, ++s1, ++s2) {
-
- if (ToLower(*s1) != ToLower(*s2))
- /* test includes early termination of one string */
- return (ToLower(*s1) < ToLower(*s2))? -1 : 1;
-
- if (*s1 == '\0') /* both strings terminate early */
- return 0;
- }
- return 0;
- }
-
-
-
-
-
- #ifdef REGULUS /* returns the inode number on success(!)...argh argh argh */
- # undef stat
-
- /********************/
- /* Function zstat() */
- /********************/
-
- int zstat(p, s)
- char *p;
- struct stat *s;
- {
- return (stat(p,s) >= 0? 0 : (-1));
- }
-
- #endif /* REGULUS */
-
-
-
-
-
- #ifdef SMALL_MEM
-
- /*******************************/
- /* Function fLoadFarString() */ /* (and friends...) */
- /*******************************/
-
- char *fLoadFarString(__GPRO__ const char Far *sz)
- {
- (void)zfstrcpy(G.rgchBigBuffer, sz);
- return G.rgchBigBuffer;
- }
-
- char *fLoadFarStringSmall(__GPRO__ const char Far *sz)
- {
- (void)zfstrcpy(G.rgchSmallBuffer, sz);
- return G.rgchSmallBuffer;
- }
-
- char *fLoadFarStringSmall2(__GPRO__ const char Far *sz)
- {
- (void)zfstrcpy(G.rgchSmallBuffer2, sz);
- return G.rgchSmallBuffer2;
- }
-
-
-
-
- #if (!defined(_MSC_VER) || (_MSC_VER < 600))
- /*************************/
- /* Function zfstrcpy() */ /* portable clone of _fstrcpy() */
- /*************************/
-
- char Far * Far zfstrcpy(char Far *s1, const char Far *s2)
- {
- char Far *p = s1;
-
- while ((*s1++ = *s2++) != '\0');
- return p;
- }
- #endif /* !_MSC_VER || (_MSC_VER < 600) */
-
- #endif /* SMALL_MEM */
-