version 1.381, 2005/08/12 21:33:41
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version 1.384, 2005/08/16 03:34:34
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Line 44 use Apache::lonlocal;
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Line 44 use Apache::lonlocal;
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my $resources_printed = ''; |
my $resources_printed = ''; |
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# Determine if a code is a valid numeric code. Valid |
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# numeric codes must be comprised entirely of digits and |
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# have a correct number of digits. |
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# |
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# Parameters: |
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# value - proposed code value. |
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# num_digits - Number of digits required. |
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# |
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sub is_valid_numeric_code { |
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my ($value, $num_digits) = @_; |
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# Remove leading/trailing whitespace; |
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$value =~ s/^\s*//; |
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$value =~ s/\s*$//; |
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# All digits? |
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if ($value =~ /^[0-9]+$/) { |
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return "Numeric code $value has invalid characters - must only be digits"; |
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} |
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if (length($value) != $num_digits) { |
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return "Numeric code $value incorrect number of digits (correct = $num_digits)"; |
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} |
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} |
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# Determines if a code is a valid alhpa code. Alpha codes |
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# are ciphers that map [A-J,a-j] -> 0..9 0..9. |
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# They also have a correct digit count. |
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# Parameters: |
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# value - Proposed code value. |
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# num_letters - correct number of letters. |
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# Note: |
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# leading and trailing whitespace are ignored. |
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# |
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sub is_valid_alpha_code { |
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my ($value, $num_letters) = @_; |
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# strip leading and trailing spaces. |
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$value =~ s/^\s*//g; |
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$value =~ s/\s*$//g; |
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# All alphas in the right range? |
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if ($value !~ /^[A-J,a-j]+$/) { |
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return "Invalid letter code $value must only contain A-J"; |
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} |
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if (length($value) != $num_letters) { |
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return "Letter code $value has incorrect number of letters (correct = $num_letters)"; |
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} |
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} |
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# Determine if a code entered by the user in a helper is valid. |
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# valid depends on the code type and the type of code selected. |
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# The type of code selected can either be numeric or |
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# Alphabetic. If alphabetic, the code, in fact is a simple |
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# substitution cipher for the actual numeric code: 0->A, 1->B ... |
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# We'll be nice and be case insensitive for alpha codes. |
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# Parameters: |
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# code_value - the value of the code the user typed in. |
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# code_option - The code type selected from the set in the scantron format |
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# table. |
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# Returns: |
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# undef - The code is valid. |
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# other - An error message indicating what's wrong. |
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# |
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sub is_code_valid { |
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my ($code_value, $code_option) = @_; |
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my ($code_type, $code_length) = ('letter', 6); # defaults. |
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open(FG, $Apache::lonnet::perlvar{'lonTabDir'}.'/scantronformat.tab'); |
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foreach my $line (<FG>) { |
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my ($name, $type, $length) = (split(/:/, $line))[0,2,4]; |
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if($name eq $code_option) { |
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$code_length = $length; |
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if($type eq 'number') { |
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$code_type = 'number'; |
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} |
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} |
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} |
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my $valid; |
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if ($code_type eq 'number') { |
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$valid = &is_valid_numeric_code($code_value, $code_length); |
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} else { |
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$valid = &is_valid_alpha_code($code_value, $code_length); |
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} |
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return "Entering a single code is not supported (yet): $code_type $code_length $valid"; |
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} |
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# Compare two students by name. The students are in the form |
# Compare two students by name. The students are in the form |
# returned by the helper: |
# returned by the helper: |
# user:domain:section:last, first:status |
# user:domain:section:last, first:status |
Line 1989 CHOOSE_STUDENTS
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Line 2074 CHOOSE_STUDENTS
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<string variable="NUMBER_TO_PRINT_TOTAL" maxlength="5" size="5"> |
<string variable="NUMBER_TO_PRINT_TOTAL" maxlength="5" size="5"> |
<validator> |
<validator> |
if (((\$helper->{'VARS'}{'NUMBER_TO_PRINT_TOTAL'}+0) < 1) && |
if (((\$helper->{'VARS'}{'NUMBER_TO_PRINT_TOTAL'}+0) < 1) && |
!\$helper->{'VARS'}{'REUSE_OLD_CODES'}) { |
!\$helper->{'VARS'}{'REUSE_OLD_CODES'} && |
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!\$helper->{'VARS'}{'SINGLE_CODE'}) { |
return "You need to specify the number of assignments to print"; |
return "You need to specify the number of assignments to print"; |
} |
} |
return undef; |
return undef; |
</validator> |
</validator> |
</string> |
</string> |
<message></td></tr><tr><td></message> |
<message></td></tr><tr><td></message> |
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<message><b>Value of CODE to print?</b></td><td></message> |
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<string variable="SINGLE_CODE" size="10" defaultvalue="zzzz"> |
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<validator> |
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if(!\$helper->{'VARS'}{'NUMBER_TO_PRINT_TOTAL'} && |
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!\$helper->{'VARS'}{'REUSE_OLD_CODES'}) { |
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return &Apache::lonprintout::is_code_valid(\$helper->{'VARS'}{'SINGLE_CODE'}, |
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\$helper->{'VARS'}{'CODE_OPTION'}); |
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} else { |
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return undef; # Other forces control us. |
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} |
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</validator> |
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</string> |
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<message></td></tr><tr><td></message> |
<message><b>Names to store the CODEs under for later:</b></message> |
<message><b>Names to store the CODEs under for later:</b></message> |
<message></td><td></message> |
<message></td><td></message> |
<string variable="ANON_CODE_STORAGE_NAME" maxlength="50" size="20" /> |
<string variable="ANON_CODE_STORAGE_NAME" maxlength="50" size="20" /> |