diff options
Diffstat (limited to 'dos/manager-M.dos')
| -rw-r--r-- | dos/manager-M.dos | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/dos/manager-M.dos b/dos/manager-M.dos new file mode 100644 index 0000000..e27c513 --- /dev/null +++ b/dos/manager-M.dos @@ -0,0 +1,211 @@ +PACKET dos manager multi DEFINES (* Copyright (C) 1985, 86, 87 *) + (* Frank Klapper *) + provide channel, (* 16.10.87 *) + dos manager: + +LET std archive channel = 31, + + ack = 0, + second phase ack = 5, + false code = 6, + + fetch code = 11, + save code = 12, + exists code = 13, + erase code = 14, + list code = 15, + all code = 17, + clear code = 18, + reserve code = 19, + free code = 20, + check read code = 22, + format code = 23, + + log code = 78, + + quote = """"; + +BOUND STRUCT (TEXT name, pass) VAR msg; + +TASK VAR order task; + +INT VAR dos channel; + +INT VAR fetch save modus; + +REAL VAR last access time := 0.0; + +TASK VAR disk owner := niltask; + +TEXT VAR save file name; + +PROC provide channel (INT CONST channel): + dos channel := channel + +END PROC provide channel; + +IF hd version + THEN provide channel (29) + ELSE provide channel (std archive channel) +FI; + +PROC dos manager: + dos manager (dos channel) + +END PROC dos manager; + +PROC dos manager (INT CONST channel): + dos channel := channel; + task password ("-"); + global manager + (PROC (DATASPACE VAR, INT CONST, INT CONST, TASK CONST) dos manager) + +END PROC dos manager; + +PROC dos manager (DATASPACE VAR ds, INT CONST order code, phase, + TASK CONST from task): + enable stop; + order task := from task; + msg := ds; + IF NOT (order task = disk owner) AND + order code <> free code AND order code <> reserve code + THEN errorstop ("DOS nicht angemeldet") + FI; + IF order task = disk owner + THEN last access time := clock (1) + FI; + SELECT order code OF + CASE fetch code : fetch file + CASE save code : save file + CASE erase code : erase file + CASE clear code : clear disk + CASE exists code : exists file + CASE list code : list disk + CASE all code : deliver directory + CASE reserve code : reserve + CASE free code : free + CASE check read code: check + CASE format code : format + CASE log code : send log + OTHERWISE errorstop ("unbekannter Auftrag für Task: " + name (myself)) + END SELECT. + +fetch file: + fetch (dos name (msg.name, read modus), ds, fetch save modus); + manager ok (ds). + +check: + check file (dos name (msg.name, read modus)); + manager message (expanded name (msg.name, read modus) + " ohne Fehler gelesen"). + +format: + IF phase = 1 + THEN manager question ("Diskette formatieren") + ELSE format dos disk (int (msg.name)); + manager ok (ds) + FI. + +save file: + IF phase = 1 + THEN save first phase + ELSE save second phase + FI. + +save first phase: + save file name := dos name (msg.name, write modus); + IF dos file exists (save file name) + THEN manager question (expanded name (msg.name, write modus) + " auf der MS-DOS Disk ueberschreiben") + ELSE send (order task, second phase ack, ds) + FI. + +save second phase: + IF dos file exists (save file name) + THEN erase dos file (save file name) + FI; + save (save file name, ds, fetch save modus); + forget (ds) ; + ds := nilspace ; + manager ok (ds). + +clear disk: + IF phase = 1 + THEN manager question ("Diskette loeschen") + ELSE clear dos disk; + manager ok (ds) + FI. + +erase file: + IF dos file exists (dos name (msg.name, read modus)) + THEN IF phase = 1 + THEN manager question (expanded name (msg.name, TRUE) + " auf der MS-DOS Disk loeschen") + ELSE erase dos file (dos name (msg.name, read modus)); + manager ok (ds) + FI + ELSE manager message ("die Datei " + expanded name (msg.name, TRUE) + " gibt es nicht auf der MS-DOS Disk") + FI. + +exists file: + IF dos file exists (dos name (msg.name, read modus)) + THEN manager ok (ds) + ELSE send (order task, false code, ds) + FI. + +list disk: + dos list (ds); + manager ok (ds). + +send log: + forget (ds); + ds := old ("logbuch"); + manager ok (ds). + +deliver directory: + forget (ds); + ds := nilspace; + BOUND THESAURUS VAR all names := ds; + all names := all dos files; + manager ok (ds). + +reserve: + IF reserve or free permitted + THEN continue channel (dos channel); + disk owner := from task; + fetch save modus := save fetch mode (msg.name); + open dos disk (path (msg.name)); + forget ("logbuch", quiet); + manager ok (ds) + ELSE errorstop ("Archivlaufwerk wird von Task """+ name (disk owner) + """ benutzt") + FI. + +reserve or free permitted : + from task = disk owner OR last access more than five minutes ago + OR disk owner = niltask OR NOT + (exists (disk owner) OR station(disk owner) <> station (myself)). + +last access more than five minutes ago : + abs (last access time - clock (1)) > 300.0. + +free: + IF reserve or free permitted + THEN close dos disk; + disk owner := niltask; + break (quiet); + manager ok (ds) + ELSE manager message ("DOS nicht angemeldet") + FI. + +END PROC dos manager; + +PROC manager ok (DATASPACE VAR ds): + send (order task, ack, ds); + last access time := clock (1). + +END PROC manager ok; + +TEXT PROC expanded name (TEXT CONST name, BOOL CONST status): + text (quote + dos name (name, status) + quote, 14) + +END PROC expanded name; + +END PACKET dos manager multi; + |