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DirElems.Mod
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Oberon Text
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1995-08-22
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3KB
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77 lines
Syntax10.Scn.Fnt
StampElems
Alloc
24 Nov 94
Syntax10b.Scn.Fnt
MODULE DirElems; (** HM
IMPORT Viewers, Texts, TextFrames, Oberon, PopupElems, Directories;
Elem* = POINTER TO ElemDesc;
ElemDesc* = RECORD (PopupElems.ElemDesc)
END;
w: Texts.Writer;
PROCEDURE ReadName (t: Texts.Text; pos: LONGINT; VAR name: ARRAY OF CHAR);
VAR r: Texts.Reader; ch, stopch: CHAR; i: INTEGER;
BEGIN
Texts.OpenReader(r, t, pos); Texts.Read(r, ch); i := 0;
IF ch = '"' THEN Texts.Read(r, ch);
WHILE ~r.eot & (ch # '"') DO name[i] := ch; INC(i); Texts.Read(r, ch) END
ELSE
WHILE ~r.eot & (ch > " ") DO name[i] := ch; INC(i); Texts.Read(r, ch) END
END;
name[i] := 0X
END ReadName;
PROCEDURE SetDirName (e: Elem; defName: ARRAY OF CHAR);
VAR vRef, i, j: INTEGER; dirID: LONGINT; name: ARRAY 256 OF CHAR;
BEGIN
IF defName = "" THEN
Directories.GetCurDir(name, vRef, dirID);
Directories.GetFullPath(vRef, dirID, name)
ELSE COPY(defName, name)
END;
i := 0; WHILE name[i] # 0X DO INC(i) END;
IF i < 32 THEN COPY(name, e.name)
ELSE e.name[31] := 0X; j := 31;
REPEAT DEC(i); DEC(j); e.name[j] := name[i] UNTIL j = 1;
e.name[0] := "*"
END SetDirName;
PROCEDURE Exec (e: Elem; pos: LONGINT);
VAR m: TextFrames.UpdateMsg; res: INTEGER; name: ARRAY 256 OF CHAR;
BEGIN
ReadName(e.menu, pos, name);
Directories.ChangeDir(name, res);
IF res = 0 THEN
IF (name = "::") OR (name = "$") THEN name := "" END;
SetDirName(e, name);
m.id := TextFrames.replace; m.text := Texts.ElemBase(e); m.beg := Texts.ElemPos(e); m.end := m.beg + 1;
Viewers.Broadcast(m)
ELSE Texts.WriteString(w, " -- failed"); Texts.WriteLn(w); Texts.Append(Oberon.Log, w.buf)
END Exec;
PROCEDURE Handle* (e: Texts.Elem; VAR m: Texts.ElemMsg);
VAR e1: Elem;
BEGIN
WITH e: Elem DO
WITH
m: Texts.CopyMsg DO
NEW(e1); m.e := e1; PopupElems.Handle(e, m)
| m: Texts.IdentifyMsg DO
m.mod := "DirElems"; m.proc := "Alloc"
| m: PopupElems.ExecMsg DO Exec(e, m.pos)
ELSE PopupElems.Handle(e, m)
END
END Handle;
PROCEDURE Alloc*;
VAR e: Elem;
BEGIN
NEW(e); e.handle := Handle; Texts.new := e
END Alloc;
PROCEDURE Insert*;
VAR e: Elem; insert: TextFrames.InsertElemMsg;
BEGIN
NEW(e); e.handle := Handle; e.small := FALSE; SetDirName(e, "");
e.menu := TextFrames.Text(""); PopupElems.MeasureMenu(e);
insert.e := e; Viewers.Broadcast(insert)
END Insert;
BEGIN
Texts.OpenWriter(w)
END DirElems.