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authorLars-Dominik Braun <lars@6xq.net>2019-02-04 13:09:03 +0100
committerLars-Dominik Braun <lars@6xq.net>2019-02-04 13:09:03 +0100
commit04e68443040c7abad84d66477e98f93bed701760 (patch)
tree2b6202afae659e773bf6916157d23e83edfa44e3 /system/dos/1.8.7/src/fetch
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Initial import
Diffstat (limited to 'system/dos/1.8.7/src/fetch')
-rw-r--r--system/dos/1.8.7/src/fetch371
1 files changed, 371 insertions, 0 deletions
diff --git a/system/dos/1.8.7/src/fetch b/system/dos/1.8.7/src/fetch
new file mode 100644
index 0000000..7cb7571
--- /dev/null
+++ b/system/dos/1.8.7/src/fetch
@@ -0,0 +1,371 @@
+PACKET fetch DEFINES (* Copyright (C) 1985, 86, 87 *)
+ (* Frank Klapper *)
+ (* 27.04.87 *)
+ fetch,
+ check file:
+
+LET ascii = 1,
+ ascii german = 2,
+ transparent = 3,
+ row text = 5,
+ ds = 6,
+ dump = 7,
+ atari st = 10,
+ ibm = 11,
+
+ (*line end chars = ""10""12""13"",*)
+ min line end char = ""10"",
+ max line end char = ""13"",
+ lf = ""10"",
+ cr = ""13"",
+ tab code = 9,
+ lf code = 10,
+ ff code = 12,
+ cr code = 13,
+ ctrl z = ""26"",
+
+ page cmd = "#page#",
+
+ row text length = 4000,
+ row text type = 1000;
+
+BOUND STRUCT (INT size,
+ ROW row text length TEXT cluster row) VAR cluster struct;
+
+FILE VAR file;
+
+TEXT VAR buffer;
+INT VAR buffer length;
+
+PROC fetch (TEXT CONST name, DATASPACE VAR file ds, INT CONST mode):
+
+ SELECT mode OF
+ CASE ascii, ascii german, atari st, ibm, transparent:
+ fetch filemode (file ds, name, mode)
+ CASE row text : fetch row textmode (file ds, name)
+ CASE ds : fetch dsmode (file ds, name)
+ CASE dump : fetch dumpmode (file ds, name)
+ OTHERWISE error stop ("Unzulässige Betriebsart")
+ END SELECT.
+
+END PROC fetch;
+
+PROC fetch filemode (DATASPACE VAR file space, TEXT CONST name,
+ INT CONST code type):
+ enable stop;
+ initialize fetch filemode;
+ open fetch dos file (name);
+ WHILE NOT was last fetch cluster REP
+ get text of cluster;
+ write lines;
+(***************************************)
+ IF lines (file) > 3900
+ THEN putline (file, ">>> FREMDDATEI FUER EUMEL ZU LANG. ES KÖNNEN DATEN FEHLEN <<<");
+ LEAVE fetch filemode
+ FI;
+(***************************************)
+ UNTIL file end via ctrl z
+ PER;
+ write last line if necessary;
+ close fetch dos file.
+
+initialize fetch filemode:
+ buffer := "";
+ buffer length := 0;
+ forget (file space);
+ file space := nilspace;
+ file := sequential file (output, file space);
+ BOOL VAR file end via ctrl z := FALSE.
+
+get text of cluster:
+ cat next fetch dos cluster (buffer);
+ IF ascii code
+ THEN ctrl z is buffer end
+ FI;
+ adapt code (buffer, buffer length + 1, code type);
+ buffer length := length (buffer).
+
+ascii code:
+ (code type = ascii) OR (code type = ascii german).
+
+ctrl z is buffer end:
+ INT CONST ctrl z pos :: pos (buffer, ctrl z, buffer length + 1);
+ file end via ctrl z := ctrl z pos > 0;
+ IF file end via ctrl z
+ THEN buffer := subtext (buffer, 1, ctrl z pos - 1);
+ buffer length := length (buffer)
+ FI.
+
+write lines:
+ INT VAR line begin pos := 1, line end pos;
+ compute line end pos;
+ WHILE line end pos > 0 REP
+ putline (file, subtext (buffer, line begin pos, line end pos));
+ exec (PROC (TEXT CONST, INT CONST) control char conversion, file, code type);
+ line begin pos := line end pos + 1;
+ compute line end pos
+ PER;
+ buffer := subtext (buffer, line begin pos);
+ buffer length := length (buffer);
+ IF buffer length > 5 000
+ THEN putline (file, buffer);
+ exec (PROC (TEXT CONST, INT CONST) control char conversion, file, code type);
+ buffer := "";
+ buffer length := 0
+ FI.
+
+compute line end pos:
+ line end pos := line begin pos;
+ REP
+ line end pos := pos (buffer, min line end char, max line end char, line end pos);
+ INT CONST line end code :: code (buffer SUB line end pos);
+ SELECT line end code OF
+ CASE lf code: look for cr
+ CASE 11 : line end pos INCR 1
+ CASE cr code: look for lf
+ END SELECT
+ UNTIL line end code <> 11
+ PER.
+
+look for cr:
+ IF line end pos = buffer length
+ THEN line end pos := 0
+ ELIF (buffer SUB line end pos + 1) = cr
+ THEN line end pos INCR 1
+ FI.
+
+look for lf:
+ IF line end pos = buffer length
+ THEN line end pos := 0
+ ELIF (buffer SUB line end pos + 1) = lf
+ THEN line end pos INCR 1
+ FI.
+
+write last line if necessary:
+ IF buffer length > 0
+ THEN putline (file, buffer);
+ exec (PROC (TEXT CONST, INT CONST) control char conversion, file, code type);
+ FI.
+
+END PROC fetch filemode;
+
+PROC adapt code (TEXT VAR text buffer, INT CONST start pos, code type):
+ SELECT code type OF
+ CASE ascii : cancel bit 8
+ CASE ascii german: cancel bit 8; ascii german adaption
+ CASE atari st : atari st adaption
+ CASE ibm : ibm adaption
+ (*CASE transparent : do nothing *)
+ END SELECT.
+
+cancel bit 8:
+ INT VAR set pos := pos (text buffer, ""128"", ""255"", start pos);
+ WHILE set pos > 0 REP
+ replace (text buffer, set pos, seven bit char);
+ set pos := pos (text buffer, ""128"", ""255"", set pos + 1)
+ PER.
+
+seven bit char:
+ code (code (text buffer SUB set pos) AND 127).
+
+ascii german adaption:
+ change all by replace (text buffer, start pos, "[", "Ä");
+ change all by replace (text buffer, start pos, "\", "Ö");
+ change all by replace (text buffer, start pos, "]", "Ü");
+ change all by replace (text buffer, start pos, "{", "ä");
+ change all by replace (text buffer, start pos, "|", "ö");
+ change all by replace (text buffer, start pos, "}", "ü");
+ change all by replace (text buffer, start pos, "~", "ß").
+
+atari st adaption:
+ change all by replace (text buffer, start pos, ""142"", "Ä");
+ change all by replace (text buffer, start pos, ""153"", "Ö");
+ change all by replace (text buffer, start pos, ""154"", "Ü");
+ change all by replace (text buffer, start pos, ""132"", "ä");
+ change all by replace (text buffer, start pos, ""148"", "ö");
+ change all by replace (text buffer, start pos, ""129"", "ü");
+ change all by replace (text buffer, start pos, ""158"", "ß").
+
+ibm adaption:
+ change all by replace (text buffer, start pos, ""142"", "Ä");
+ change all by replace (text buffer, start pos, ""153"", "Ö");
+ change all by replace (text buffer, start pos, ""154"", "Ü");
+ change all by replace (text buffer, start pos, ""132"", "ä");
+ change all by replace (text buffer, start pos, ""148"", "ö");
+ change all by replace (text buffer, start pos, ""129"", "ü");
+ change all by replace (text buffer, start pos, ""225"", "ß").
+
+END PROC adapt code;
+
+PROC change all by replace (TEXT VAR string, INT CONST begin pos,
+ TEXT CONST old, new):
+
+ INT VAR p := pos (string, old, begin pos);
+ WHILE p > 0 REP
+ replace (string, p, new);
+ p := pos (string, old, p + 1)
+ PER.
+
+END PROC change all by replace;
+
+PROC control char conversion (TEXT VAR string, INT CONST code type):
+
+ IF code type <> transparent
+ THEN code conversion
+ FI.
+
+code conversion:
+ INT VAR p := pos (string, ""0"", ""31"", 1);
+ WHILE p > 0 REP
+ convert char;
+ p := pos (string, ""0"", ""31"", p)
+ PER.
+
+convert char:
+ INT CONST char code := code (string SUB p);
+ SELECT char code OF
+ CASE tab code: expand tab
+ CASE lf code: change (string, p, p, "")
+ CASE ff code: change (string, p, p, page cmd)
+ CASE cr code: change (string, p, p, "")
+ OTHERWISE ersatzdarstellung
+ END SELECT.
+
+expand tab:
+ change (string, p, p, (8 - (p - 1) MOD 8) * " ").
+
+ersatzdarstellung:
+ TEXT CONST t := text (char code);
+ change (string, p, p, "#" + (3 - length (t)) * "0" + t + "#").
+
+END PROC control char conversion;
+
+PROC fetch rowtextmode (DATASPACE VAR file space,
+ TEXT CONST name):
+ enable stop;
+ open fetch dos file (name);
+ initialize fetch rowtext mode;
+ WHILE NOT was last fetch cluster REP
+ cluster struct.size INCR 1;
+ cluster struct.cluster row [cluster struct.size] := "";
+ cat next fetch dos cluster (cluster struct.cluster row [cluster struct.size])
+ PER;
+ close fetch dos file.
+
+initialize fetch row text mode:
+ forget (file space);
+ file space := nilspace;
+ cluster struct := file space;
+ type (file space, row text type);
+ cluster struct.size := 0.
+
+END PROC fetch rowtext mode;
+
+PROC fetch ds mode (DATASPACE VAR in ds, TEXT CONST name):
+ enable stop;
+ open fetch dos file (name);
+ init fetch dsmode;
+ WHILE NOT was last fetch cluster REP
+ read next fetch dos cluster (in ds, ds block no);
+ PER;
+ close fetch dos file.
+
+init fetch dsmode:
+ forget (in ds);
+ in ds := nilspace;
+ INT VAR ds block no := 2.
+
+END PROC fetch ds mode;
+
+PROC fetch dumpmode (DATASPACE VAR file space, TEXT CONST name):
+ enable stop;
+ open fetch dos file (name);
+ initialize fetch dumpmode;
+ WHILE NOT was last fetch cluster REP
+ TEXT VAR cluster buffer := "";
+ cat next fetch dos cluster (cluster buffer);
+ dump cluster
+ UNTIL offset > 50 000.0
+ PER;
+ close fetch dos file.
+
+initialize fetch dump mode:
+ BOOL VAR fertig := FALSE;
+ REAL VAR offset := 0.0;
+ forget (file space);
+ file space := nilspace;
+ file := sequential file (output, file space).
+
+dump cluster:
+ TEXT VAR dump line;
+ INT VAR line, column;
+ FOR line FROM 0 UPTO (cluster size DIV 16) - 1 REP
+ build dump line;
+ putline (file, dump line);
+ offset INCR 16.0
+ UNTIL fertig
+ PER.
+
+build dump line:
+ TEXT VAR char line := "";
+ dump line := text (offset, 6, 0);
+ dump line := subtext (dump line, 1, 5);
+ dump line CAT " ";
+ FOR column FROM 0 UPTO 7 REP
+ convert char;
+ dump line CAT " "
+ PER;
+ dump line CAT " ";
+ FOR column FROM 8 UPTO 15 REP
+ convert char;
+ dump line CAT " "
+ PER;
+ dump line CAT " ";
+ dump line CAT char line.
+
+convert char:
+ TEXT CONST char :: cluster buffer SUB (line * 16 + column + 1);
+ IF char = ""
+ THEN fertig := TRUE;
+ dump line CAT " ";
+ LEAVE convert char
+ FI;
+ INT CONST char code := code (char);
+ LET hex chars = "0123456789ABCDEF";
+ dump line CAT (hex chars SUB (char code DIV 16 + 1));
+ dump line CAT (hex chars SUB (char code MOD 16 + 1));
+ charline CAT show char.
+
+show char:
+ IF (char code > 31 AND char code < 127)
+ THEN char
+ ELSE "."
+ FI.
+
+END PROC fetch dump mode;
+
+PROC check file (TEXT CONST name):
+ disable stop;
+ DATASPACE VAR test ds := nilspace;
+ enable check file (name, test ds);
+ forget (test ds);
+ IF is error
+ THEN clear error;
+ error stop ("Fehler beim Prüflesen der Datei """ + name + """")
+ FI.
+
+END PROC check file;
+
+PROC enable check file (TEXT CONST name, DATASPACE VAR test ds):
+ enable stop;
+ open fetch dos file (name);
+ WHILE NOT was last fetch cluster REP
+ INT VAR dummy := 2;
+ read next fetch dos cluster (test ds, dummy)
+ PER;
+ close fetch dos file.
+
+END PROC enable check file;
+
+END PACKET fetch;
+