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Single_Line : in Boolean;
Size : out Count;
Cursor : in out Screen_Offset)
is
C : Count;
I : Offset := Data'First;
Last_Non_NL : Offset := Data'Last;
begin
while Last_Non_NL in Data'Range
and then (Data (Last_Non_NL) = Encodings.CR
or Data (Last_Non_NL) = Encodings.LF)
loop
Last_Non_NL := Last_Non_NL - 1;
end loop;
Size := 2;
Cursor := Cursor + 1;
while I in Data'Range loop
case Data (I) is
when 8 | 9 | 11 | 12
| Encodings.Quoted_Atom_End | Encodings.Escape =>
Size := Size + 2;
Cursor := Cursor + 2;
when 10 | 13 =>
if Single_Line
or else I > Last_Non_NL
or else not Is_Newline (Data, I, Newline)
then
Size := Size + 2;
Cursor := Cursor + 2;
else
case Newline is
when LF | CR =>
Size := Size + 1;
when CR_LF | LF_CR =>
Size := Size + 2;
I := I + 1;
end case;
Cursor := 1;
Size := Size + 4;
Cursor := Cursor + 4;
when 16#80# .. 16#FF# =>
case Encoding is
when ASCII =>
Size := Size + 4;
Cursor := Cursor + 4;
when Latin =>
if Data (I) in 16#80# .. 16#9F# then
Size := Size + 4;
Cursor := Cursor + 4;
else
Size := Size + 1;
Cursor := Cursor + 1;
end if;
when UTF_8 =>
C := UTF_Character_Size (Data, I);
if C = 0 then
Size := Size + 4;
Cursor := Cursor + 4;
else
Size := Size + C;
Cursor := Cursor + 1;
I := I + C - 1;
end if;
end case;
when others =>
Size := Size + 1;
Cursor := Cursor + 1;
end case;
if not Single_Line
and then Width > 0
and then Cursor >= Width
then
case Newline is
when CR | LF =>
Size := Size + 2;
when CR_LF | LF_CR =>
Size := Size + 3;
end case;
Cursor := 1;
end if;
I := I + 1;
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Single_Line : in Boolean;
Size : out Count;
Cursor : in out Screen_Offset)
is
C : Count;
I : Offset := Data'First;
Last_Non_NL : Offset := Data'Last;
Input_Delta : Count;
Output_Delta : Count;
Width_Adjust : Offset;
New_Cursor : Screen_Column;
begin
while Last_Non_NL in Data'Range
and then (Data (Last_Non_NL) = Encodings.CR
or Data (Last_Non_NL) = Encodings.LF)
loop
Last_Non_NL := Last_Non_NL - 1;
end loop;
Size := 2;
Cursor := Cursor + 1;
while I in Data'Range loop
Input_Delta := 1;
Width_Adjust := 0;
case Data (I) is
when 8 | 9 | 11 | 12
| Encodings.Quoted_Atom_End | Encodings.Escape =>
Output_Delta := 2;
when 10 | 13 =>
if Single_Line
or else I > Last_Non_NL
or else not Is_Newline (Data, I, Newline)
then
Output_Delta := 2;
else
Width_Adjust := -Offset (Cursor);
case Newline is
when LF | CR =>
Output_Delta := 1;
when CR_LF | LF_CR =>
Output_Delta := 2;
Input_Delta := 2;
end case;
end if;
when 0 .. 7 | 14 .. 31 =>
Output_Delta := 4;
when 16#80# .. 16#FF# =>
case Encoding is
when ASCII =>
Output_Delta := 4;
when Latin =>
if Data (I) in 16#80# .. 16#9F# then
Output_Delta := 4;
else
Output_Delta := 1;
end if;
when UTF_8 =>
C := UTF_Character_Size (Data, I);
if C = 0 then
Output_Delta := 4;
else
Output_Delta := C;
Input_Delta := C;
Width_Adjust := 1 - C;
end if;
end case;
when others =>
Output_Delta := 1;
end case;
New_Cursor := Screen_Column
(Offset (Cursor) + Output_Delta + Width_Adjust);
if not Single_Line
and then Width > 0
and then Cursor > 1
and then (New_Cursor > Width + 1
or else (New_Cursor = Width + 1
and then I + 1 in Data'Range
and then not Is_Newline (Data, I, Newline)))
then
case Newline is
when CR | LF =>
Size := Size + 2;
when CR_LF | LF_CR =>
Size := Size + 3;
end case;
Cursor := 1;
else
I := I + Input_Delta;
Size := Size + Output_Delta;
Cursor := New_Cursor;
end if;
end loop;
Cursor := Cursor + 1;
end Quoted_Lengths;
function Multi_Line_Quoted_Size
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procedure Write_Quoted
(Output : in out Printer;
Data : in Atom;
Single_Line : in Boolean)
is
procedure Escape
(Value : in Octet;
Result : out Atom;
Pos : in out Offset);
Size : Count;
Last_Non_NL : Offset := Data'Last;
procedure Escape
(Value : in Octet;
Result : out Atom;
Pos : in out Offset) is
begin
Result (Pos) := Encodings.Escape;
case Output.Param.Quoted_Escape is
when Octal_Escape =>
Result (Pos + 1) := Encodings.Digit_0 + (Value / 2**6);
Result (Pos + 2) := Encodings.Digit_0 + (Value / 2**3) mod 2**3;
Result (Pos + 3) := Encodings.Digit_0 + (Value mod 2**3);
when Hex_Escape =>
Result (Pos + 1) := Character'Pos ('x');
Encodings.Encode_Hex
(Value,
Output.Param.Hex_Casing,
Result (Pos + 2),
Result (Pos + 3));
end case;
Pos := Pos + 4;
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procedure Write_Quoted
(Output : in out Printer;
Data : in Atom;
Single_Line : in Boolean)
is
procedure Escape
(Value : in Octet;
Result : in out Atom;
Pos : in Offset);
Size : Count;
Last_Non_NL : Offset := Data'Last;
procedure Escape
(Value : in Octet;
Result : in out Atom;
Pos : in Offset) is
begin
Result (Pos) := Encodings.Escape;
case Output.Param.Quoted_Escape is
when Octal_Escape =>
Result (Pos + 1) := Encodings.Digit_0 + (Value / 2**6);
Result (Pos + 2) := Encodings.Digit_0 + (Value / 2**3) mod 2**3;
Result (Pos + 3) := Encodings.Digit_0 + (Value mod 2**3);
when Hex_Escape =>
Result (Pos + 1) := Character'Pos ('x');
Encodings.Encode_Hex
(Value,
Output.Param.Hex_Casing,
Result (Pos + 2),
Result (Pos + 3));
end case;
end Escape;
begin
declare
Discarded_Cursor : Screen_Offset := Output.Cursor;
begin
Quoted_Lengths
(Data,
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end loop;
declare
Result : Atom (0 .. Size - 1);
I : Offset := Data'First;
O : Offset := Result'First + 1;
C : Count;
begin
Result (0) := Encodings.Quoted_Atom_Begin;
Output.Cursor := Output.Cursor + 1;
while I in Data'Range loop
case Data (I) is
when 8 =>
Result (O) := Encodings.Escape;
Result (O + 1) := Character'Pos ('b');
O := O + 2;
Output.Cursor := Output.Cursor + 2;
when 9 =>
Result (O) := Encodings.Escape;
Result (O + 1) := Character'Pos ('t');
O := O + 2;
Output.Cursor := Output.Cursor + 2;
when 10 =>
if Single_Line
or else I > Last_Non_NL
or else not Is_Newline (Data, I, Output.Param.Newline)
then
Result (O) := Encodings.Escape;
Result (O + 1) := Character'Pos ('n');
O := O + 2;
Output.Cursor := Output.Cursor + 2;
else
Result (O) := Data (I);
O := O + 1;
Output.Cursor := 1;
I := I + 1;
Result (O) := Data (I);
O := O + 1;
end if;
end if;
when 11 =>
Result (O) := Encodings.Escape;
Result (O + 1) := Character'Pos ('v');
O := O + 2;
Output.Cursor := Output.Cursor + 2;
when 12 =>
Result (O) := Encodings.Escape;
Result (O + 1) := Character'Pos ('f');
O := O + 2;
Output.Cursor := Output.Cursor + 2;
when 13 =>
if Single_Line
or else I > Last_Non_NL
or else not Is_Newline (Data, I, Output.Param.Newline)
then
Result (O) := Encodings.Escape;
Result (O + 1) := Character'Pos ('r');
O := O + 2;
Output.Cursor := Output.Cursor + 2;
else
Result (O) := Data (I);
O := O + 1;
Output.Cursor := 1;
I := I + 1;
Result (O) := Data (I);
O := O + 1;
end if;
end if;
when Encodings.Quoted_Atom_End | Encodings.Escape =>
Result (O) := Encodings.Escape;
Result (O + 1) := Data (I);
O := O + 2;
Output.Cursor := Output.Cursor + 2;
when 0 .. 7 | 14 .. 31 =>
Escape (Data (I), Result, O);
Output.Cursor := Output.Cursor + 4;
when 16#80# .. 16#FF# =>
case Output.Param.Char_Encoding is
when ASCII =>
Escape (Data (I), Result, O);
Output.Cursor := Output.Cursor + 4;
when Latin =>
if Data (I) in 16#80# .. 16#9F# then
Escape (Data (I), Result, O);
Output.Cursor := Output.Cursor + 4;
else
Result (O) := Data (I);
O := O + 1;
Output.Cursor := Output.Cursor + 1;
Output.Cursor := Output.Cursor + 4;
else
Result (O .. O + C - 1) := Data (I .. I + C - 1);
O := O + C;
I := I + C - 1;
Output.Cursor := Output.Cursor + 1;
end if;
end case;
when others =>
Result (O) := Data (I);
O := O + 1;
Output.Cursor := Output.Cursor + 1;
and then Output.Cursor >= Output.Param.Width
then
Result (O) := Encodings.Escape;
case Output.Param.Newline is
when CR =>
Result (O + 1) := Encodings.CR;
O := O + 2;
when LF =>
Result (O + 1) := Encodings.LF;
O := O + 2;
when CR_LF =>
Result (O + 1) := Encodings.CR;
Result (O + 2) := Encodings.LF;
O := O + 3;
when LF_CR =>
Result (O + 1) := Encodings.LF;
Result (O + 2) := Encodings.CR;
O := O + 3;
end case;
Output.Cursor := 1;
end if;
I := I + 1;
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end loop;
declare
Result : Atom (0 .. Size - 1);
I : Offset := Data'First;
O : Offset := Result'First + 1;
C : Count;
Input_Delta : Count;
Output_Delta : Count;
Width_Adjust : Offset;
New_Cursor : Screen_Column;
begin
Result (0) := Encodings.Quoted_Atom_Begin;
Output.Cursor := Output.Cursor + 1;
while I in Data'Range loop
Output_Delta := 1;
Width_Adjust := 0;
Input_Delta := 1;
case Data (I) is
when 8 =>
Result (O) := Encodings.Escape;
Result (O + 1) := Character'Pos ('b');
Output_Delta := 2;
when 9 =>
Result (O) := Encodings.Escape;
Result (O + 1) := Character'Pos ('t');
Output_Delta := 2;
when 10 =>
if Single_Line
or else I > Last_Non_NL
or else not Is_Newline (Data, I, Output.Param.Newline)
then
Result (O) := Encodings.Escape;
Result (O + 1) := Character'Pos ('n');
Output_Delta := 2;
else
Result (O) := Data (I);
Width_Adjust := -Offset (Output.Cursor);
if Output.Param.Newline = CR_LF
or Output.Param.Newline = LF_CR
then
Input_Delta := 2;
Result (O + 1) := Data (I + 1);
Output_Delta := 2;
end if;
end if;
when 11 =>
Result (O) := Encodings.Escape;
Result (O + 1) := Character'Pos ('v');
Output_Delta := 2;
when 12 =>
Result (O) := Encodings.Escape;
Result (O + 1) := Character'Pos ('f');
Output_Delta := 2;
when 13 =>
if Single_Line
or else I > Last_Non_NL
or else not Is_Newline (Data, I, Output.Param.Newline)
then
Result (O) := Encodings.Escape;
Result (O + 1) := Character'Pos ('r');
Output_Delta := 2;
else
Result (O) := Data (I);
Width_Adjust := -Offset (Output.Cursor);
if Output.Param.Newline = CR_LF
or Output.Param.Newline = LF_CR
then
Input_Delta := 2;
Result (O + 1) := Data (I + 1);
Output_Delta := 2;
end if;
end if;
when Encodings.Quoted_Atom_End | Encodings.Escape =>
Result (O) := Encodings.Escape;
Result (O + 1) := Data (I);
Output_Delta := 2;
when 0 .. 7 | 14 .. 31 =>
Escape (Data (I), Result, O);
Output_Delta := 4;
when 16#80# .. 16#FF# =>
case Output.Param.Char_Encoding is
when ASCII =>
Escape (Data (I), Result, O);
Output_Delta := 4;
when Latin =>
if Data (I) in 16#80# .. 16#9F# then
Escape (Data (I), Result, O);
Output_Delta := 4;
else
Result (O) := Data (I);
end if;
when UTF_8 =>
C := UTF_Character_Size (Data, I);
if C = 0 then
Escape (Data (I), Result, O);
Output_Delta := 4;
else
Result (O .. O + C - 1) := Data (I .. I + C - 1);
Input_Delta := C;
Output_Delta := C;
Width_Adjust := 1 - C;
end if;
end case;
when others =>
Result (O) := Data (I);
end case;
New_Cursor := Screen_Column
(Offset (Output.Cursor) + Output_Delta + Width_Adjust);
if not Single_Line
and then Output.Param.Width > 0
and then Output.Cursor > 1
and then (New_Cursor > Output.Param.Width + 1
or else (New_Cursor = Output.Param.Width + 1
and then I + 1 in Data'Range
and then not Is_Newline (Data, I + 1, Output.Param.Newline)))
then
Result (O) := Encodings.Escape;
case Output.Param.Newline is
when CR =>
Result (O + 1) := Encodings.CR;
O := O + 2;
when LF =>
Result (O + 1) := Encodings.LF;
O := O + 2;
when CR_LF =>
Result (O + 1) := Encodings.CR;
Result (O + 2) := Encodings.LF;
O := O + 3;
when LF_CR =>
Result (O + 1) := Encodings.LF;
Result (O + 2) := Encodings.CR;
O := O + 3;
end case;
Output.Cursor := 1;
else
I := I + Input_Delta;
O := O + Output_Delta;
Output.Cursor := New_Cursor;
end if;
end loop;
pragma Assert (O = Result'Last);
Result (O) := Encodings.Quoted_Atom_End;
Output.Stream.Write (Result);
end;
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