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⟦f05f879b2⟧ Ada Source

    Length: 4096 (0x1000)
    Types: Ada Source
    Notes: 03_class, FILE, R1k_Segment, e3_tag, function Next_Token_Scanner, seg_00fde2

Derivation

└─⟦8527c1e9b⟧ Bits:30000544 8mm tape, Rational 1000, Arrival backup of disks in PAM's R1000
    └─ ⟦5a81ac88f⟧ »Space Info Vol 1« 
        └─⟦this⟧ 

function Next_Token_Scanner return String is
    -- global parameters:  Buffer, Buffer_Index
    Token_Start : Natural;
    Next_Char : Character;
    Quote : constant Character := '"';
begin
    while Buffer_Index <= Buffer'Last and then Buffer (Buffer_Index) = ' ' loop
        Buffer_Index := Buffer_Index + 1;
    end loop;

    Token_Start := Buffer_Index;
    if Buffer_Index > Buffer'Last then
        return "";
    end if;
    if Buffer (Buffer_Index) = Quote then
        -- quoted string token; look for ending Quote
        Buffer_Index := Buffer_Index + 1;  -- point to 1st string char
        Token_Start := Buffer_Index;
        while Buffer_Index <= Buffer'Last loop
            Next_Char := Buffer (Buffer_Index);
            Buffer_Index := Buffer_Index + 1;

            if Next_Char = Quote then
                -- if 2 quotes in a row; treat as one quote
                -- single quote; end of token
                if Buffer_Index > Buffer'Last or else
                   Buffer (Buffer_Index) /= Quote then
                    -- Just one quote.  Done
                    return Buffer (Token_Start .. Buffer_Index - 1);
                else
                    -- Got 2 quotes!
                    -- Shift array left 1.  Leave Buffer_Index
                    -- at char past double-"
                    Buffer (Buffer_Index .. Buffer'Last - 1) :=
                       Buffer (Buffer_Index + 1 .. Buffer'Last);
                end if;
            end if;
        end loop;

        -- open but no matching quote
        return Buffer (Token_Start .. Buffer'Last);
    else
        while Buffer_Index <= Buffer'Last loop
            -- regular case; just eat chars till delimiter
            Next_Char := Buffer (Buffer_Index);
            Buffer_Index := Buffer_Index + 1;
            case Next_Char is
                when '!' .. '~' => -- all printing characters
                    null;
                when others =>
                    exit;
            end case;
        end loop;

        if Buffer_Index > Buffer'Last then
            return Buffer (Token_Start .. Buffer'Last);
        else
            return Buffer (Token_Start .. Buffer_Index -
                                             2);  -- delim + incremented again
        end if;
    end if;
end Next_Token_Scanner;

    nblk1=3
    nid=0
    hdr6=6
        [0x00] rec0=1b rec1=00 rec2=01 rec3=054
        [0x01] rec0=18 rec1=00 rec2=02 rec3=01a
        [0x02] rec0=10 rec1=00 rec2=03 rec3=000
    tail 0x2150bb450822f6350b21d 0x42a00088462060003