Edit.Mod

MODULE Edit;    (** CAS/MH/HM 27.4.1994 / NW 15.11.94 **)
    IMPORT
        Modules, Oberon, Display, Viewers, MenuViewers, Fonts, Printer,
        Texts, TextFrames, ParcElems, TextPrinter;

    CONST
        Menu = "^Edit.Menu.Text System.Close  System.Copy  System.Grow  Edit.Search  Edit.Replace  Edit.Parcs  Edit.Store ";
        OptionChar = "/";

        mm = TextFrames.mm; Unit = TextPrinter.Unit;
        Scale = mm DIV 10;  (*unit of user setable attributes is 1/10 mm*)

        headerX = 15 * mm DIV Unit;
        headerW = 165 * mm DIV Unit;
        bodyX = 15 * mm DIV Unit; bodyY = 15 * mm DIV Unit;
        bodyW = 165 * mm DIV Unit;

        MaxPat = 128;
        CR = 0DX;

    VAR
        R: Texts.Reader;
        W: Texts.Writer;
        mnam: ARRAY 12*3 + 1 OF CHAR;

        find: RECORD
            time, len: LONGINT;
            buf: ARRAY MaxPat OF CHAR
        END;
        repl: RECORD
            time: LONGINT;
            buf: Texts.Buffer
        END;


    PROCEDURE Ch (ch: CHAR);
    BEGIN Texts.Write(W, ch); Texts.Append(Oberon.Log, W.buf)
    END Ch;

    PROCEDURE Str (s: ARRAY OF CHAR);
    BEGIN Texts.WriteString(W, s); Texts.Append(Oberon.Log, W.buf)
    END Str;

    PROCEDURE Int (n: LONGINT);
    BEGIN Texts.Write(W, " "); Texts.WriteInt(W, n, 0); Texts.Append(Oberon.Log, W.buf)
    END Int;

    PROCEDURE Ln;
    BEGIN Texts.WriteLn(W); Texts.Append(Oberon.Log, W.buf)
    END Ln;


    PROCEDURE Min (x, y: LONGINT): LONGINT;
    BEGIN
        IF x < y THEN RETURN x ELSE RETURN y END
    END Min;


    PROCEDURE AppendNum (VAR s: ARRAY OF CHAR; VAR i: INTEGER; n: LONGINT);
        VAR j: INTEGER; digits: ARRAY 16 OF CHAR;
    BEGIN j := 0;
        REPEAT digits[j] := CHR(n MOD 10 + 30H); INC(j); n := n DIV 10 UNTIL n = 0;
        REPEAT DEC(j); s[i] := digits[j]; INC(i) UNTIL j = 0;
        s[i] := 0X
    END AppendNum;

    PROCEDURE AppendDate (VAR s: ARRAY OF CHAR);    (*s := s & "   (dd mmm yy)"*)
        VAR time, date: LONGINT; i, j, k, m: INTEGER;
    BEGIN Oberon.GetClock(time, date); i := 0;
        WHILE s[i] # 0X DO INC(i) END;
        s[i] := " "; s[i + 1] := " "; s[i + 2] := " "; s[i + 3] := "("; INC(i, 4);
        AppendNum(s, i, date MOD 20H); s[i] := " "; INC(i);
        m := SHORT((date DIV 20H) MOD 10H); k := m * 3; j := k - 3;
        REPEAT s[i] := mnam[j]; INC(i); INC(j) UNTIL j = k;
        s[i] := " "; INC(i); AppendNum(s, i, (date DIV 200H) MOD 100);
        s[i] := ")"; s[i + 1] := 0X
    END AppendDate;

    PROCEDURE ShowAliens (t: Texts.Text);
        VAR R: Texts.Reader; identify: Texts.IdentifyMsg;
    BEGIN
        Texts.OpenReader(R, t, 0); Texts.ReadElem(R);
        WHILE ~R.eot DO identify.mod[31] := 0X; R.elem.handle(R.elem, identify);
            IF identify.mod[31] = 1X THEN Ln; Str("pos"); Int(Texts.Pos(R) - 1);
                Str("  unknown element allocator: "); Str(identify.mod); Ch("."); Str(identify.proc)
            END;
            Texts.ReadElem(R)
        END;
        IF W.buf.len > 0 THEN Ln; Texts.Append(Oberon.Log, W.buf) END
    END ShowAliens;


    (* view support *)

    PROCEDURE ShowPos (F: TextFrames.Frame; pos: LONGINT);
        VAR beg, end, delta: LONGINT;
    BEGIN delta := 200;
        LOOP beg := F.org; end := TextFrames.Pos(F, F.X + F.W, F.Y);
            IF (beg <= pos) & (pos < end) OR (delta = 0) THEN EXIT END;
            TextFrames.Show(F, pos - delta); delta := delta DIV 2
        END
    END ShowPos;

    PROCEDURE SetCaret (F: TextFrames.Frame; pos: LONGINT);
    BEGIN Oberon.PassFocus(Viewers.This(F.X, F.Y)); TextFrames.SetCaret(F, pos)
    END SetCaret;

    PROCEDURE NewView (name: ARRAY OF CHAR; class: INTEGER;
            T: Texts.Text; org: LONGINT): TextFrames.Frame;
        VAR V: MenuViewers.Viewer; F, M: TextFrames.Frame; i, x, y: INTEGER;
    BEGIN
        IF class = Texts.String THEN i := 0;
            WHILE name[i] # 0X DO INC(i) END;
            name[i] := 22X; INC(i); name[i] := 0X;
            WHILE i >= 0 DO name[i+1] := name[i]; DEC(i) END;
            name[0] := 22X
        END;
        F := TextFrames.NewText(T, org);
        Oberon.AllocateUserViewer(Oberon.Mouse.X, x, y);
        M := TextFrames.NewMenu(name, Menu);
        V := MenuViewers.New(M, F, TextFrames.menuH, x, y);
        ShowPos(F, org); RETURN F
    END NewView;


    (* search & replace *)

    PROCEDURE Find (T: Texts.Text; beg: LONGINT; VAR end: LONGINT);
        VAR i, j, b, e: INTEGER; ch: CHAR; ref: ARRAY MaxPat OF CHAR;   (*ref [b..e) is readback buffer*)
    BEGIN
        Texts.OpenReader(R, T, beg); Texts.Read(R, ch); i := 0; ref[0] := ch; j := 0; b := 0; e := 1;
        WHILE ~R.eot & (i < find.len) DO
            IF (find.buf[i] = ch)
                OR (find.buf[i] = 0FFX)
                    & ((ch < "0") OR (ch > "9") & (ch < "A") OR (ch > "Z") & (ch < "a") OR (ch > "z"))
                        THEN INC(i); j := (j + 1) MOD MaxPat
            ELSE i := 0; b := (b + 1) MOD MaxPat; j := b
            END;
            IF j # e THEN ch := ref[j]
            ELSE Texts.Read(R, ch); ref[j] := ch; e := (e + 1) MOD MaxPat; INC(beg);
            END
        END;
        IF i = find.len THEN end := beg ELSE end := -1 END
    END Find;

    PROCEDURE Check (T: Texts.Text; beg: LONGINT): BOOLEAN;
        VAR ch: CHAR; i: INTEGER;
    BEGIN i := 0;
        IF (beg >= 0) & (find.len > 0) THEN Texts.OpenReader(R, T, beg); Texts.Read(R, ch);
            WHILE ~R.eot & (i < find.len) & (ch = find.buf[i]) DO Texts.Read(R, ch); INC(i) END;
        END;
        RETURN i = find.len
    END Check;

    PROCEDURE SetReplBuf;
        VAR T: Texts.Text; beg, end, time: LONGINT;
    BEGIN Oberon.GetSelection(T, beg, end, time);
        IF time > repl.time THEN repl.time := time;
            Texts.OpenBuf(repl.buf); Texts.Save(T, beg, end, repl.buf)
        END
    END SetReplBuf;

    PROCEDURE Subst (T: Texts.Text; beg: LONGINT; VAR end: LONGINT);
    BEGIN Texts.Delete(T, beg, beg + find.len);
        IF repl.buf.len > 0 THEN end := beg + repl.buf.len;
            Texts.Insert(T, beg, repl.buf); Texts.Save(T, beg, end, repl.buf)
        END
    END Subst;


    (* arguments *)

    PROCEDURE MarkedFrame (): TextFrames.Frame;
        VAR V: Viewers.Viewer;
    BEGIN V := Oberon.MarkedViewer();
        IF (V # NIL) & (V IS MenuViewers.Viewer) & (V.dsc.next IS TextFrames.Frame) THEN
            RETURN V.dsc.next(TextFrames.Frame)
        ELSE RETURN NIL
        END
    END MarkedFrame;

    PROCEDURE FocusFrame (): TextFrames.Frame;
        VAR V: Viewers.Viewer; f: Display.Frame;
    BEGIN V := Oberon.FocusViewer;
        IF (V # NIL) & (V IS MenuViewers.Viewer) & (V.dsc # NIL) THEN f := V.dsc.next;
            IF (f # NIL) & (f IS TextFrames.Frame) THEN RETURN f(TextFrames.Frame) ELSE RETURN NIL END
        ELSE RETURN NIL
        END
    END FocusFrame;

    PROCEDURE TargetFrame (): TextFrames.Frame; (*body frame or focus frame*)
        VAR f: Display.Frame;
    BEGIN
        IF Oberon.Par.vwr.dsc = Oberon.Par.frame THEN f := Oberon.Par.frame.next;
            IF (f # NIL) & (f IS TextFrames.Frame) THEN RETURN f(TextFrames.Frame) ELSE RETURN NIL END
        ELSE RETURN FocusFrame()
        END
    END TargetFrame;

    PROCEDURE GetMainArg (VAR S: Texts.Scanner; VAR end: LONGINT); (*takes recent selection if ^*)
        VAR text: Texts.Text; beg, time: LONGINT;
    BEGIN Texts.Scan(S); end := MAX(LONGINT);
        IF (S.class = Texts.Char) & (S.c = "^") THEN Oberon.GetSelection(text, beg, end, time);
            IF time >= 0 THEN Texts.OpenScanner(S, text, beg); Texts.Scan(S) END
        END;
        IF S.line # 0 THEN S.class := Texts.Inval END
    END GetMainArg;

    PROCEDURE GetArg (VAR S: Texts.Scanner);
        (*takes selection in command frame if ^*)
        VAR F: TextFrames.Frame;
    BEGIN
        Texts.OpenScanner(S, Oberon.Par.text, Oberon.Par.pos); Texts.Scan(S);
        IF (S.class = Texts.Char) & (S.c = "^") THEN F := Oberon.Par.frame(TextFrames.Frame);
            IF F.hasSel THEN 
                Texts.OpenScanner(S, F.text, F.selbeg.pos); Texts.Scan(S); F.time := 0;
            END
        END
    END GetArg;

    PROCEDURE Change (sel: SET);
        VAR S: Texts.Scanner; fnt: Fonts.Font; text: Texts.Text; beg, end, time: LONGINT; col, off: SHORTINT;
    BEGIN GetArg(S); Oberon.GetSelection(text, beg, end, time);
        IF time >= 0 THEN
            IF (sel = {0}) & (S.class = Texts.Name) THEN fnt := Fonts.This(S.s)
            ELSIF (sel = {1}) & (S.class = Texts.Int) & (0 <= S.i) & (S.i < 16) THEN col := SHORT(SHORT(S.i))
            ELSIF (sel = {2}) & (S.class = Texts.Int) & (-128 <= S.i) & (S.i < 128) THEN off := SHORT(SHORT(S.i))
            ELSE sel := {}
            END;
            IF sel # {} THEN Texts.ChangeLooks(text, beg, end, sel, fnt, col, off) END
        END
    END Change;


    (* commands *)

    PROCEDURE Locate*;
        VAR S: Texts.Scanner; F: TextFrames.Frame; text: Texts.Text; beg, end, time: LONGINT;
    BEGIN F := MarkedFrame(); Oberon.GetSelection(text, beg, end, time);
        IF time > 0 THEN Texts.OpenScanner(S, text, beg); Texts.Scan(S);
            WHILE (S.class # Texts.Int) & (S.line = 0) & ~S.eot DO Texts.Scan(S) END;
            IF (F # NIL) & (S.class = Texts.Int) & (S.line = 0) THEN ShowPos(F, S.i); SetCaret(F, S.i) END
        END;
    END Locate;

    PROCEDURE Search*;
        VAR F: TextFrames.Frame; T: Texts.Text; i, beg, end, time: LONGINT;
    BEGIN Oberon.GetSelection(T, beg, end, time); F := TargetFrame();
        IF time > find.time THEN find.time := time; find.len := Min(end - beg, MaxPat);
            Texts.OpenReader(R, T, beg); i := 0;
            REPEAT Texts.Read(R, find.buf[i]); INC(i) UNTIL i = find.len
        END;
        IF F # NIL THEN
            IF F.hasCar THEN beg := F.carloc.pos ELSE beg := 0 END;
            Find(F.text, beg, end);
            IF end >= 0 THEN ShowPos(F, end); SetCaret(F, end)
            ELSE TextFrames.RemoveCaret(F)
            END;
            TextFrames.RemoveSelection(F)
        END
    END Search;

    PROCEDURE Show*;
        VAR S: Texts.Scanner; F: TextFrames.Frame; text: Texts.Text;
            i, j, beg, end, time: LONGINT;
            name: ARRAY Modules.ModNameLen + 4 OF CHAR;
    BEGIN text := Oberon.Par.text; beg := Oberon.Par.pos; end := Oberon.Par.text.len; time := Oberon.Time();
        Texts.OpenScanner(S, text, beg); Texts.Scan(S);
        IF (S.class = Texts.Char) & (S.c = "^") OR (S.line > 0) THEN Oberon.GetSelection(text, beg, end, time);
            IF time >= 0 THEN Texts.OpenScanner(S, text, beg); Texts.Scan(S) END
        END;
        IF (time >= 0) & (S.class = Texts.Name) THEN i := 0;
            WHILE (S.s[i] # 0X) & (S.s[i] # ".") DO name[i] := S.s[i]; INC(i) END;
            IF i < Modules.ModNameLen THEN
                name[i] := "."; name[i+1] := "M"; name[i+2] := "o"; name[i+3] := "d"; name[i+4] := 0X;
                find.len := 0; j := i + 1; 
                WHILE S.s[j] # 0X DO find.buf[find.len] := S.s[j]; INC(find.len); INC(j) END;
                find.buf[find.len] := 0FFX; INC(find.len);
                find.time := time;
                text := TextFrames.Text(name);
                Find(text, 0, end); IF end < 0 THEN end := 0 END;
                F := NewView(name, Texts.Name, text, end);
                IF end > 0 THEN SetCaret(F, end) END
            END
        END
    END Show;

    PROCEDURE Recall*;
        VAR B: Texts.Buffer; copyover: Oberon.CopyOverMsg;
    BEGIN Texts.Recall(B);
        IF B # NIL THEN copyover.beg := 0; copyover.end := B.len;
            copyover.text := TextFrames.Text(""); Texts.Append(copyover.text, B);
            Oberon.FocusViewer.handle(Oberon.FocusViewer, copyover)
        END
    END Recall;

    PROCEDURE ClearReplaceBuffer*;
    BEGIN Texts.OpenBuf(repl.buf)
    END ClearReplaceBuffer;

    PROCEDURE Replace*;
        VAR F: TextFrames.Frame; T: Texts.Text; beg, end: LONGINT;
    BEGIN F := TargetFrame(); SetReplBuf;
        IF (F # NIL) & F.hasCar THEN T := F.text; end := F.carloc.pos; beg := end - find.len;
            TextFrames.RemoveSelection(F);
            IF Check(T, beg) THEN Subst(T, beg, end) END;
            Find(T, end, beg);
            IF beg >= 0 THEN ShowPos(F, beg); SetCaret(F, beg)
            ELSE TextFrames.RemoveCaret(F)
            END
        END
    END Replace;

    PROCEDURE ReplaceAll*;
        VAR F: TextFrames.Frame; T: Texts.Text; beg, end: LONGINT;
    BEGIN F := TargetFrame(); SetReplBuf;
        IF (F # NIL) & F.hasCar THEN T := F.text; end := F.carloc.pos; beg := end - find.len;
            TextFrames.RemoveSelection(F);
            IF Check(T, beg) THEN Subst(T, beg, end) END;
            LOOP Find(T, end, beg);
                IF beg < 0 THEN EXIT END;
                Subst(T, beg - find.len, end)
            END
        END
    END ReplaceAll;

    PROCEDURE ChangeFont*;
    BEGIN Change({0})
    END ChangeFont;

    PROCEDURE ChangeColor*;
    BEGIN Change({1})
    END ChangeColor;

    PROCEDURE ChangeOffset*;
    BEGIN Change({2})
    END ChangeOffset;

    PROCEDURE ChangeBackgroundColor*;
        VAR F: TextFrames.Frame; m: MenuViewers.ModifyMsg; S: Texts.Scanner; H: INTEGER;
    BEGIN F := MarkedFrame();
        IF F # NIL THEN GetArg(S);
            IF S.class = Texts.Int THEN
                F.col := SHORT(SHORT(S.i)); m.id := MenuViewers.extend; m.Y := F.Y; H := F.H;
                m.H := 0; F.handle(F, m); (*suspend*)
                m.H := H; F.handle(F, m) (*extend*)
            END
        END
    END ChangeBackgroundColor;


    PROCEDURE InsertParc*;
        VAR copy: Texts.CopyMsg; insert: TextFrames.InsertElemMsg;
    BEGIN
        TextFrames.defParc.handle(TextFrames.defParc, copy); insert.e := copy.e;
        Oberon.FocusViewer.handle(Oberon.FocusViewer, insert)
    END InsertParc;

    PROCEDURE Parcs*;
        VAR S: Texts.Scanner; V: Viewers.Viewer; F: TextFrames.Frame; um: TextFrames.UpdateMsg;
            end: LONGINT; R: Texts.Reader;
    BEGIN
        IF Oberon.Par.frame # Oberon.Par.vwr.dsc THEN Texts.OpenScanner(S, Oberon.Par.text, Oberon.Par.pos);
            Texts.Scan(S);
            IF (S.class = Texts.Char) & (S.line = 0) & (S.c = "*") THEN V := Oberon.MarkedViewer() ELSE V := NIL END
        ELSE V := Oberon.Par.vwr
        END;
        IF (V # NIL) & (V IS MenuViewers.Viewer) & (V.dsc.next IS TextFrames.Frame) THEN
            F := V.dsc.next(TextFrames.Frame); F.showsParcs := ~ F.showsParcs;
            Texts.OpenReader(R, F.text, F.org); Texts.ReadElem(R); end := TextFrames.Pos(F, F.X + F.W, F.Y);
            WHILE (Texts.Pos(R) <= end) & (R.elem # NIL) & ~(R.elem IS TextFrames.Parc) DO Texts.ReadElem(R) END;
            IF (R.elem # NIL) & (R.elem IS TextFrames.Parc) & (Texts.Pos(R) <= end) THEN
                um.id := Texts.replace; um.text := F.text; um.end := end;
                um.beg := Texts.Pos(R)-1;
                F.handle(F, um)
            END
        END
    END Parcs;

    PROCEDURE Open*;
        VAR S: Texts.Scanner; F: TextFrames.Frame; end: LONGINT;
    BEGIN Texts.OpenScanner(S, Oberon.Par.text, Oberon.Par.pos); GetMainArg(S, end);
        IF (S.class = Texts.Name) OR (S.class = Texts.String) THEN
            F := NewView(S.s, S.class, TextFrames.Text(S.s), 0);
            ShowAliens(F.text)
        END
    END Open;

    PROCEDURE Store*;
        VAR S: Texts.Scanner; R: Texts.Reader; V: Viewers.Viewer; T: Texts.Text; ch: CHAR;
    BEGIN V := NIL;
        IF Oberon.Par.frame = Oberon.Par.vwr.dsc THEN V := Oberon.Par.vwr
        ELSIF Oberon.Pointer.on THEN  V := Oberon.MarkedViewer()
        END;
        IF (V # NIL) & (V IS MenuViewers.Viewer) & (V.dsc IS TextFrames.Frame) & (V.dsc.next IS TextFrames.Frame) THEN
            Texts.OpenScanner(S, V.dsc(TextFrames.Frame).text, 0); Texts.Scan(S);
            IF (S.class = Texts.Name) OR (S.class = Texts.String) THEN
                Str("Edit.Store "); Str(S.s); T := V.dsc.next(TextFrames.Frame).text;
                Texts.Close(T, S.s); Int(T.len); Ln;
                T := V.dsc(TextFrames.Frame).text;
                Texts.OpenReader(R, T, T.len - 1); Texts.Read(R, ch);
                IF ch = "!" THEN Texts.Delete(T, T.len - 1, T.len) END
            END
        END
    END Store;

    PROCEDURE Set*;
        VAR S: Texts.Scanner; R: Texts.Reader; text: Texts.Text; P: TextFrames.Parc;
            msg: ParcElems.StateMsg; pos, beg, end, time: LONGINT;
    BEGIN GetArg(S); Oberon.GetSelection(text, beg, end, time);
        IF time >= 0 THEN Texts.OpenReader(R, text, beg); 
            REPEAT Texts.ReadElem(R); pos := Texts.Pos(R);
                IF ~R.eot & (pos <= end) & (R.elem IS TextFrames.Parc) THEN
                    msg.id := ParcElems.set; msg.pos := pos - 1; msg.frame := NIL; msg.par := S; msg.log := Oberon.Log;
                    P := R.elem(TextFrames.Parc); P.handle(P, msg);
                END
            UNTIL R.eot OR (pos > end)
        ELSE Str("Edit.Set failed (no parc selected)"); Ln
        END
    END Set;

    PROCEDURE Get*;
        VAR S: Texts.Scanner; R: Texts.Reader; text: Texts.Text; P: TextFrames.Parc; pos, beg, end, time: LONGINT;
            msg: ParcElems.StateMsg;
    BEGIN GetArg(S); Oberon.GetSelection(text, beg, end, time);
        IF time >= 0 THEN
            Texts.OpenReader(R, text, beg); Texts.ReadElem(R); pos := Texts.Pos(R);
            IF ~R.eot & (pos <= end) & (R.elem IS TextFrames.Parc) THEN
                Str("Edit.Set ^ ");
                msg.id := ParcElems.get; msg.pos := pos - 1; msg.frame := NIL; msg.par := S; msg.log := Oberon.Log;
                P := R.elem(TextFrames.Parc); P.handle(P, msg)
            ELSE Str("Edit.Get failed (no parc selected)")
            END
        ELSE Str("Edit.Get failed (no parc selected)")
        END;
        Ln
    END Get;


    PROCEDURE Print*;
        VAR S, S1: Texts.Scanner; V: Viewers.Viewer; F: TextFrames.Frame; end: LONGINT; draft: BOOLEAN;

        PROCEDURE PrintText(VAR S: Texts.Scanner; T: Texts.Text; name: ARRAY OF CHAR; draft: BOOLEAN);
            CONST headerLen = 128;
            VAR pos, len: LONGINT; ch: CHAR;
                hx, hy, hw, bx, by, bw, bh, i, k: INTEGER;
                nofcopies, pno, first, last, arab: INTEGER;
                fnt: Fonts.Font; label, labelfirst, alt: BOOLEAN;
                header: ARRAY headerLen OF CHAR;
        BEGIN hx := headerX; hw := headerW;
            hy := SHORT((LONG(Printer.PageHeight) * Unit - 17 * mm) DIV Unit);
            bx := bodyX; by := bodyY; bw := bodyW;
            bh := SHORT((LONG(Printer.PageHeight) * Unit - 37 * mm) DIV Unit);
            nofcopies := 1; pno := 0; first := 0; last := 10000; arab := 1;
            label := TRUE; labelfirst := TRUE; alt := FALSE;
            header[0] := 0X; fnt := Fonts.Default;
            Texts.Scan(S);
            WHILE (S.class = Texts.Char) & (S.c = OptionChar) DO
                Texts.Scan(S);
                IF S.class = Texts.Name THEN ch := CAP(S.s[0]);
                    IF ch # "H" THEN Texts.Scan(S) END;
                    IF ch = "A" THEN alt := TRUE
                    ELSIF (ch = "C") & (S.class = Texts.Int) & (1 <= S.i) & (S.i < 10) THEN nofcopies := SHORT(S.i); Texts.Scan(S)
                    ELSIF (ch = "F") & (S.class = Texts.Name) THEN fnt := Fonts.This(S.s); Texts.Scan(S)
                    ELSIF ch = "H" THEN
                        REPEAT Texts.Read(S, ch) UNTIL (ch > " ") OR S.eot;
                        IF ch = 22X THEN i := 0; (* read string *)
                            REPEAT Texts.Read(S, ch); header[i] := ch; INC(i) UNTIL (ch = 22X) OR (ch = CR);
                            header[i-1] := 0X; Texts.Read(S, ch);
                            (*COPY(S.s, header); Texts.Scan(S)*)
                        ELSE COPY(name, header); AppendDate(header)
                        END;
                        S.nextCh := ch; Texts.Scan(S);
                    ELSIF ch = "M" THEN (*margin options*)
                        IF S.class = Texts.Name THEN ch := CAP(S.s[0]); Texts.Scan(S); i := 0;
                            WHILE (S.class = Texts.Int) & (0 <= S.i) DO
                                k := SHORT(S.i * Scale DIV TextPrinter.Unit); INC(i); Texts.Scan(S);
                                IF ch = "H" THEN
                                    IF i = 1 THEN hx := k ELSIF i = 2 THEN hy := k ELSIF i = 3 THEN hw := k END
                                ELSIF ch = "B" THEN
                                    IF i = 1 THEN bx := k ELSIF i = 2 THEN by := k
                                    ELSIF i = 3 THEN bw := k ELSIF i = 4 THEN bh := k
                                    END
                                END
                            END
                        END
                    ELSIF ch = "P" THEN (*page numbering options*)
                        IF (S.class = Texts.Int) & (0 <= S.i) THEN pno := SHORT(S.i); first := pno; Texts.Scan(S)
                        ELSIF S.class = Texts.Name THEN ch := CAP(S.s[0]); Texts.Scan(S);
                            IF ch = "F" THEN labelfirst := FALSE
                            ELSIF ch = "N" THEN label := FALSE
                            ELSIF ch = "R" THEN arab := -1;
                                IF first = 0 THEN pno := 1; first := 1 END
                            END
                        END
                    ELSIF (ch = "S") & (S.class = Texts.Int) & (0 <= S.i) THEN first := SHORT(S.i); Texts.Scan(S);
                        IF (S.class = Texts.Int) & (0 <= S.i) THEN last := SHORT(S.i); Texts.Scan(S) ELSE last := first END
                    END
                END
            END;
            Ch(" "); Str(name); Int(nofcopies); Ch(" ");
            IF draft THEN TextPrinter.PrintDraft(T, name, nofcopies)
            ELSE pos := 0; len := T.len;
                WHILE (pos < len) & (pno <= last) & (Printer.res = 0) DO
                    IF (first <= pno) & label & labelfirst THEN
                        TextPrinter.PlaceHeader(hx, hy, hw, arab*pno, fnt, header, alt)
                    END;
                    TextPrinter.PlaceBody(bx, by, bw, bh, T, pos, pno, (first <= pno) & (pno <= last));
                    IF first <= pno THEN Printer.Page(nofcopies); Ch(".") ELSE Ch("'") END;
                    INC(pno); labelfirst := TRUE
                END
            END;
            Ln
        END PrintText;

    BEGIN Str("Edit.Print "); Texts.OpenScanner(S, Oberon.Par.text, Oberon.Par.pos); Texts.Scan(S);
        IF ((S.class = Texts.Name) OR (S.class = Texts.String)) & (S.line = 0) THEN Str(S.s);
            Printer.Open(S.s, Oberon.User, Oberon.Password); TextPrinter.InitFonts;
            IF Printer.res = 0 THEN GetMainArg(S, end);
                IF (S.class = Texts.Char) & (S.c = "%") THEN draft := TRUE; Texts.Scan(S) ELSE draft := FALSE END;
                IF Oberon.Par.frame = Oberon.Par.vwr.dsc THEN
                    F := Oberon.Par.frame(TextFrames.Frame);
                    IF (F.next # NIL) & (F.next IS TextFrames.Frame) THEN
                        Texts.OpenScanner(S1, F.text, 0); Texts.Scan(S1);
                        PrintText(S, F.next(TextFrames.Frame).text, S1.s, draft)
                    END
                ELSIF (S.class = Texts.Char) & (S.c = "*") THEN V := Oberon.MarkedViewer();
                    IF (V IS MenuViewers.Viewer) & (V.dsc.next IS TextFrames.Frame) THEN
                        Texts.OpenScanner(S1, V.dsc(TextFrames.Frame).text, 0); Texts.Scan(S1);
                        IF S1.class # Texts.Name THEN S1.s[0] := "*"; S1.s[1] := 0X END;
                        PrintText(S, V.dsc.next(TextFrames.Frame).text, S1.s, draft)
                    ELSE Str(" failed (bad * marker)"); Ln
                    END
                ELSIF S.class = Texts.Name THEN
                    REPEAT PrintText(S, TextFrames.Text(S.s), S.s, draft)
                    UNTIL S.eot OR (S.class # Texts.Name) OR (Texts.Pos(S) > end)
                ELSE Ln
                END;
                Printer.Close
            ELSE Str(" failed (");
                IF Printer.res = 1 THEN Str("no such printer)")
                ELSIF Printer.res = 2 THEN Str("no link)")
                ELSIF Printer.res = 3 THEN Str("printer not ready)")
                ELSIF Printer.res = 4 THEN Str("no permission)")
                ELSE Str("res ="); Int(Printer.res); Str(" ?)")
                END;
                Ln
            END
        ELSE Str("failed (no printer specified)"); Ln
        END
    END Print;

BEGIN Texts.OpenWriter(W);
    mnam := "JanFebMarAprMayJunJulAugSepOctNovDec";
    find.time := -1; find.len := 0;
    repl.time := -1; NEW(repl.buf); Texts.OpenBuf(repl.buf)
END Edit.