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| 2 | /***********************************************************************
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| 3 |
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| 4 | $Id: fsopen.c 1347 2008-12-20 04:22:16Z gyoung $
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| 5 |
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| 6 | _fsopen for IBMC
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| 7 |
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| 8 | Copyright (c) 1993-98 M. Kimes
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| 9 | Copyright (c) 2007 2008 Steven H. Levine
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| 10 |
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| 11 | 15 Oct 02 SHL Baseline
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| 12 | 05 Jun 07 SHL Update for OpenWatcom
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| 13 |
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| 14 | ***********************************************************************/
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| 15 |
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| 16 | #if defined(__IBMC__)
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| 17 |
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| 18 | #include <stdlib.h>
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| 19 | #include <stdio.h>
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| 20 | #include <string.h>
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| 21 | #include <io.h>
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| 22 | #include <fcntl.h>
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| 23 | #include <share.h>
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| 24 |
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| 25 | #define INCL_WIN
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| 26 | #define INCL_DOS
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| 27 | #define INCL_LONGLONG
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| 28 |
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| 29 | #include "fm3dll.h"
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| 30 | #include "stristr.h" // stristr
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| 31 |
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| 32 | #pragma alloc_text(FSOPEN,_fsopen)
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| 33 |
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| 34 | FILE *_fsopen(CHAR * filename, CHAR * mode, INT sharemode, ...)
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| 35 | {
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| 36 |
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| 37 | ULONG openflag = OPEN_ACTION_OPEN_IF_EXISTS, openmode = 0;
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| 38 | ULONGLONG action = 0;
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| 39 | HFILE handle;
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| 40 | FILE *fp;
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| 41 | BOOL text = TRUE;
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| 42 |
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| 43 | if (!stristr(mode, "b"))
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| 44 | text = FALSE;
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| 45 | if (stristr(mode, "r"))
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| 46 | openmode |= OPEN_ACCESS_READONLY;
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| 47 | else if (stristr(mode, "w")) {
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| 48 | openmode |= OPEN_ACCESS_WRITEONLY;
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| 49 | openflag |= (OPEN_ACTION_REPLACE_IF_EXISTS | OPEN_ACTION_CREATE_IF_NEW);
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| 50 | }
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| 51 | if (stristr(mode, "a"))
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| 52 | openmode |= OPEN_ACCESS_WRITEONLY;
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| 53 | if (stristr(mode, "+")) {
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| 54 | openmode &= (~(OPEN_ACCESS_READONLY | OPEN_ACCESS_WRITEONLY));
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| 55 | openmode |= OPEN_ACCESS_READWRITE;
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| 56 | openflag |= OPEN_ACTION_CREATE_IF_NEW;
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| 57 | }
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| 58 | if (sharemode == SH_DENYRW)
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| 59 | openmode |= OPEN_SHARE_DENYREADWRITE;
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| 60 | else if (sharemode == SH_DENYWR)
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| 61 | openmode |= OPEN_SHARE_DENYWRITE;
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| 62 | else if (sharemode == SH_DENYRD)
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| 63 | openmode |= OPEN_SHARE_DENYREAD;
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| 64 | else
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| 65 | openmode |= OPEN_SHARE_DENYNONE;
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| 66 | openmode |= OPEN_FLAGS_FAIL_ON_ERROR;
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| 67 | if (text)
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| 68 | openmode |= OPEN_FLAGS_SEQUENTIAL;
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| 69 | else
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| 70 | openmode |= OPEN_FLAGS_RANDOMSEQUENTIAL;
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| 71 | if (DosOpen(filename, &handle, &action, 0, FILE_NORMAL, openflag, openmode,
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| 72 | (PEAOP2) 0))
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| 73 | return NULL;
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| 74 | if (mode[strlen(mode) - 1] == 't')
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| 75 | mode[strlen(mode) - 1] = 0; /* bug bug bug */
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| 76 | fp = fdopen(handle, mode);
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| 77 | if (!fp) {
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| 78 | DosClose(handle);
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| 79 | fp = fopen(filename, mode); /* last ditch effort */
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| 80 | }
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| 81 | if (fp) {
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| 82 | if (text) /* line buffer text files */
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| 83 | setvbuf(fp, NULL, _IOLBF, BUFSIZ * 2);
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| 84 | else
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| 85 | setvbuf(fp, NULL, _IOFBF, BUFSIZ * 8);
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| 86 | if (stristr(mode, "a"))
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| 87 | fseek(fp, 0L, SEEK_END);
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| 88 | }
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| 89 | return fp;
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| 90 | }
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| 91 |
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| 92 | #endif
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