83 lines
3.4 KiB
Plaintext
83 lines
3.4 KiB
Plaintext
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{MS-Pascal / MS-FORTRAN FCB Declaration Include File}
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INTERFACE; UNIT
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FILKQQ (FCBFQQ,
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accessmodes,
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am_read,
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am_readwrite,
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am_write,
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am_default,
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SHAREMODES,
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sm_compat,
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sm_denyrw,
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sm_denywr,
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sm_denyrd,
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sm_denynone,
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FILEMODES,
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SEQUENTIAL,
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TERMINAL,
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DIRECT,
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fm_sequential,
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fm_direct,
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fm_terminal);
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TYPE
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FILEMODES = (SEQUENTIAL, TERMINAL, DIRECT);
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SHAREMODES = (sm_compat, sm_denyrw, sm_denywr, sm_denyrd, sm_denynone);
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accessmodes = (am_read, am_write, am_readwrite, am_default);
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FCBFQQ = RECORD {byte offsets start every field comment}
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{fields accessible by Pascal user as <file variable>.<field>}
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TRAP: BOOLEAN; {00 Pascal user trapping errors if true}
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ERRS: WRD(0)..18; {01 error status, set only by all units}
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MODE: FILEMODES; {02 user file mode; not used in unit U}
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SHARE:SHAREMODES; {03 pad to word bound, special user use}
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{fields shared by units F, V, U; ERRC / ESTS are write-only}
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ERRC: WORD; {04 error code, error exists if nonzero}
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{1000..1099: set for unit U errors}
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{1100..1199: set for unit F errors}
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{1200..1299: set for unit V errors}
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ESTS: WORD; {06 error specific data usually from OS}
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CMOD: FILEMODES; {08 system file mode; copied from MODE}
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{fields set / used by units F and V, and read-only in unit U}
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TXTF: BOOLEAN; {09 true: formatted / ASCII / TEXT file}
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{false: not formatted / binary file}
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SIZE: WORD; {10 record size set when file is opened}
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{DIRECT: always fixed record length}
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{others: max buffer variable length}
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IERF: BOOLEAN; {12 Unit U Incomplete End Of Record }
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{Kluge. Set false by opnuqq and }
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{pccuqq, and true by peruqq. Thus }
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{if true in wefuqq, it means that }
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{there is an incomplete line, and }
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{pccuqq should be called to flush }
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{it. Only applies to terminal files}
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access: accessmodes;{13 controls read/write modes }
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OLDF: boolean; {14 true: must exist before open; RESET}
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{false: can create on open; REWRITE}
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INPT: BOOLEAN; {15 true: user is now reading from file}
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{false: user is now writing to file}
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RECL: WORD; {16 DIRECT record number, lo order word}
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RECH: WORD; {18 DIRECT record number, hi order word}
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USED: WORD; {20 number bytes used in current record}
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{fields used internally by units F or V not needed by unit U}
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LINK: ADR OF FCBFQQ;{22 DS offset address of next open file}
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BADR: ADRMEM; {24 F: DS offset address for buffer var}
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TMPF: BOOLEAN; {26 F: is a temp file; delete on CLOSE}
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FULL: BOOLEAN; {27 F: buffer variable lazy eval status}
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UNFM: BOOLEAN; {28 V: for unformatted binary file mode}
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OPEN: BOOLEAN; {29 F: file opened (by RESET / REWRITE)}
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FUNT: INTEGER; {30 V: FORTRAN unit number (1 to 32767)}
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ENDF: BOOLEAN; {32 V: last I/O statement was a ENDFILE}
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{fields set / used by unit U, and read-only in units F and V}
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REDY: BOOLEAN; {33 buffer ready if true; set by F / U}
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BCNT: WORD; {34 number of data bytes actually moved}
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EORF: BOOLEAN; {36 true if end of record read, written}
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EOFF: BOOLEAN; {37 end of file flag set after EOF read}
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{unit U (operating system) information starts here}
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{end of section for unit U specific OS information}
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END;
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const fm_sequential = sequential;
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fm_direct = direct;
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fm_terminal = terminal;
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END;
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