MaplePrimes - answers and comments on Question, There were problems during the loading process, Your worksheet may become incomplete.

fixed

Joe Riel — Fri, 06 Jan 2012 21:06:13 Z

Here is the fixed worksheet, Projektet-fixed.mw. A few months ago I posted a Maple procedure to remove bad characters from a worksheet. Here it is again, with a small correction (added call to ?fclose to close the file after writing). It was used to fix the worksheet.

DeleteBadCharacters := proc(file :: string)
local base, badchar, char, cnt, msg, outfile, str, unicode;
    str := FileTools:-Text:-ReadFile(file);
    for cnt from 0 do
        try
            XMLTools:-ParseString(str);
            break;
        catch "An invalid XML character":
            msg := lastexception[2];
            if not StringTools:-RegMatch("Unicode: 0x([^)]+)", msg, 'all', 'unicode') then
                error;
            end if;
            unicode := sscanf(unicode,"%x");
            char := convert(unicode,'bytes');
            badchar[cnt+1] := char;
            str := StringTools:-SubstituteAll(str, char, "");
        end try;
    end do;

    if cnt=0 then
        printf("no errors in file\n");
    else
        if not StringTools:-RegMatch("^(.*)\\.mw$", file, 'all', 'base') then
            error "problem extracting basename";
        end if;
        printf("deleted bad characters: %A\n", {seq(badchar[cnt],cnt=1..cnt)});
        outfile := sprintf("%s-fixed.mw", base);
        FileTools:-Text:-WriteString(outfile, str);
        fclose(outfile);
        printf("wrote updated file to %s\n", outfile);
    end if;
    return NULL;
end proc:

Update

Modified routine to print the unique bad characters deleted (rather than just the number). With the given worksheet, the bad characters were ^U and ^V.

Help

_Username_ — Sun, 05 Mar 2023 09:36:21 Z

I have the same problem

How do you use that script? i have no idea? witch program? how does the script know witch file? help pls

attach the worksheet file

acer — Mon, 06 Mar 2023 14:12:44 Z

@_Username_ I suggest that you upload and attach the worksheet (green up-arrow in the Mapleprimes editor), in a separate Question thread.

preventable?

acer — Fri, 06 Jan 2012 22:21:48 Z

It's disturbing how often instances of this problem get reported here. I count 4 or 5 times in the past couple of months. Which raises the question of how often it occurs and is not reported here.

I wonder how it occurs, whether the cause is preventable and, if not, why the GUI itself cannot accomplish a repair more reliably.

acer

observation and speculation

Joe Riel — Fri, 06 Jan 2012 23:54:35 Z

@acer I agree---the Maple GUI really shouldn't be creating invalid worksheets. My limited observation is that the corrupted ones primarily originate from users with a non-ascii keyboard. I modified the above routine to print the invalid characters. Does the ^U come from inserting an umlaut? What about ^V?

Huge and humble THANKS!

Anasothman — Sat, 07 Jan 2012 00:31:02 Z

I cannot thank you enough; Huge thank you! You've saved me MANY hours of work :-)