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Original Path: trunk/webwork2/lib/WeBWorK/Utils.pm
| 1 : | sh002i | 410 | package WeBWorK::Utils; |
| 2 : | use base qw(Exporter); | ||
| 3 : | |||
| 4 : | sh002i | 412 | use strict; |
| 5 : | use warnings; | ||
| 6 : | use Date::Format; | ||
| 7 : | use Date::Parse; | ||
| 8 : | |||
| 9 : | sh002i | 410 | our @EXPORT = (); |
| 10 : | sh002i | 424 | our @EXPORT_OK = qw( |
| 11 : | runtime_use | ||
| 12 : | readFile | ||
| 13 : | formatDateTime | ||
| 14 : | parseDateTime | ||
| 15 : | sh002i | 427 | dbDecode |
| 16 : | dbEncode | ||
| 17 : | sh002i | 429 | decodeAnswers |
| 18 : | encodeAnswers | ||
| 19 : | sh002i | 424 | ref2string |
| 20 : | hash2string | ||
| 21 : | array2string | ||
| 22 : | ); | ||
| 23 : | sh002i | 410 | |
| 24 : | sub runtime_use($) { | ||
| 25 : | return unless @_; | ||
| 26 : | sh002i | 424 | eval "package Main; require $_[0]; import $_[0]"; |
| 27 : | sh002i | 410 | die $@ if $@; |
| 28 : | } | ||
| 29 : | |||
| 30 : | sub readFile($) { | ||
| 31 : | my $fileName = shift; | ||
| 32 : | open INPUTFILE, "<", $fileName | ||
| 33 : | or die "Failed to read $fileName: $!"; | ||
| 34 : | local $/ = undef; | ||
| 35 : | my $result = <INPUTFILE>; | ||
| 36 : | close INPUTFILE; | ||
| 37 : | return $result; | ||
| 38 : | } | ||
| 39 : | sh002i | 412 | |
| 40 : | sub formatDateTime($) { | ||
| 41 : | my $dateTime = shift; | ||
| 42 : | # "standard" WeBWorK date/time format: | ||
| 43 : | # %m month number, starting with 01 | ||
| 44 : | # %d numeric day of the month, with leading zeros (eg 01..31) | ||
| 45 : | # %y year (2 digits) | ||
| 46 : | # %I hour, 12 hour clock, leading 0's) | ||
| 47 : | # %M minute, leading 0's | ||
| 48 : | # %P am or pm (Yes %p and %P are backwards :) | ||
| 49 : | return time2str "%m/%d/%y %I:%M%P", $dateTime; | ||
| 50 : | } | ||
| 51 : | |||
| 52 : | sub parseDateTime($) { | ||
| 53 : | sh002i | 424 | my $string = shift; |
| 54 : | sh002i | 412 | return str2time $string; |
| 55 : | } | ||
| 56 : | sh002i | 422 | |
| 57 : | sh002i | 429 | # ----- |
| 58 : | |||
| 59 : | sh002i | 427 | sub dbDecode($) { |
| 60 : | my $string = shift; | ||
| 61 : | return unless defined $string and $string; | ||
| 62 : | my %hash = $string =~ /(.*?)(?<!\\)=(.*?)(?:(?<!\\)&|$)/g; | ||
| 63 : | sh002i | 429 | $hash{$_} =~ s/\\(&|=)/$1/g foreach keys %hash; # unescape & and = |
| 64 : | sh002i | 427 | return %hash; |
| 65 : | } | ||
| 66 : | |||
| 67 : | sub dbEncode(@) { | ||
| 68 : | my %hash = @_; | ||
| 69 : | my $string; | ||
| 70 : | foreach (keys %hash) { | ||
| 71 : | $hash{$_} = "" unless defined $hash{$_}; # promote undef to "" | ||
| 72 : | $hash{$_} =~ s/(=|&)/\\$1/g; # escape & and = | ||
| 73 : | $string .= "$_=$hash{$_}&"; | ||
| 74 : | } | ||
| 75 : | chop $string; # remove final '&' from string for old code :p | ||
| 76 : | return $string; | ||
| 77 : | } | ||
| 78 : | |||
| 79 : | sh002i | 429 | sub decodeAnswers($) { |
| 80 : | my $string = shift; | ||
| 81 : | return unless defined $string and $string; | ||
| 82 : | my @array = split m/##/, $string; | ||
| 83 : | $array[$_] =~ s/\\#\\/#/g foreach 0 .. $#array; | ||
| 84 : | return @array; # it's actually a hash ;) | ||
| 85 : | } | ||
| 86 : | |||
| 87 : | sub encodeAnswers(\%\@) { | ||
| 88 : | my %hash = %{ shift() }; | ||
| 89 : | my @order = @{ shift() }; | ||
| 90 : | my $string; | ||
| 91 : | foreach my $name (@order) { | ||
| 92 : | my $value = defined $hash{$name} ? $hash{$name} : ""; | ||
| 93 : | $name =~ s/#/\\#\\/g; # this is a WEIRD way to escape things | ||
| 94 : | $value =~ s/#/\\#\\/g; # and it's not my fault! | ||
| 95 : | $string .= "$name##$value##"; # this is also not my fault | ||
| 96 : | } | ||
| 97 : | $string =~ s/##$//; # remove last pair of hashs | ||
| 98 : | return $string; | ||
| 99 : | } | ||
| 100 : | |||
| 101 : | sh002i | 424 | # ----- |
| 102 : | sh002i | 422 | |
| 103 : | sh002i | 424 | sub ref2string($;$); |
| 104 : | sub ref2string($;$) { | ||
| 105 : | my $ref = shift; | ||
| 106 : | my $dontExpand = shift || {}; | ||
| 107 : | my $refType = ref $ref; | ||
| 108 : | sh002i | 422 | my $result; |
| 109 : | sh002i | 424 | if ($refType and not $dontExpand->{$refType}) { |
| 110 : | my $baseType = refBaseType($ref); | ||
| 111 : | $result .= '<font size="1" color="grey">' . $refType; | ||
| 112 : | sh002i | 425 | $result .= " ($baseType)" if $baseType and $refType ne $baseType; |
| 113 : | sh002i | 424 | $result .= ":</font><br>"; |
| 114 : | $result .= '<table border="1" cellpadding="2">'; | ||
| 115 : | if ($baseType eq "HASH") { | ||
| 116 : | my %hash = %$ref; | ||
| 117 : | foreach (sort keys %hash) { | ||
| 118 : | $result .= '<tr valign="top">'; | ||
| 119 : | $result .= "<td>$_</td>"; | ||
| 120 : | $result .= "<td>" . ref2string($hash{$_}, $dontExpand) . "</td>"; | ||
| 121 : | $result .= "</tr>"; | ||
| 122 : | } | ||
| 123 : | } elsif ($baseType eq "ARRAY") { | ||
| 124 : | my @array = @$ref; | ||
| 125 : | sh002i | 429 | # special case for Problem, Set, and User objects, which are defined |
| 126 : | # using lists and contain a @FIELDS package variable: | ||
| 127 : | no strict 'refs'; | ||
| 128 : | my @FIELDS = eval { @{$refType."::FIELDS"} }; | ||
| 129 : | use strict 'refs'; | ||
| 130 : | undef @FIELDS unless scalar @FIELDS == scalar @array and not $@; | ||
| 131 : | sh002i | 424 | foreach (0 .. $#array) { |
| 132 : | $result .= '<tr valign="top">'; | ||
| 133 : | $result .= "<td>$_</td>"; | ||
| 134 : | sh002i | 429 | $result .= "<td>".$FIELDS[$_]."</td>" if @FIELDS; |
| 135 : | sh002i | 424 | $result .= "<td>" . ref2string($array[$_], $dontExpand) . "</td>"; |
| 136 : | $result .= "</tr>"; | ||
| 137 : | } | ||
| 138 : | } elsif ($baseType eq "SCALAR") { | ||
| 139 : | my $scalar = $$ref; | ||
| 140 : | $result .= '<tr valign="top">'; | ||
| 141 : | $result .= "<td>$scalar</td>"; | ||
| 142 : | $result .= "</tr>"; | ||
| 143 : | sh002i | 422 | } else { |
| 144 : | sh002i | 424 | # perhaps a coderef? in any case, i don't feel like dealing with it! |
| 145 : | $result .= '<tr valign="top">'; | ||
| 146 : | $result .= "<td>$ref</td>"; | ||
| 147 : | $result .= "</tr>"; | ||
| 148 : | sh002i | 422 | } |
| 149 : | sh002i | 424 | $result .= "</table>" |
| 150 : | sh002i | 422 | } else { |
| 151 : | sh002i | 424 | $result .= defined $ref ? $ref : '<font color="red">undef</font>'; |
| 152 : | } | ||
| 153 : | sh002i | 422 | } |
| 154 : | |||
| 155 : | sh002i | 424 | sub refBaseType($) { |
| 156 : | my $ref = shift; | ||
| 157 : | local $SIG{__DIE__} = 'IGNORE'; | ||
| 158 : | return "HASH" if eval { $_ = %$ref; 1 }; | ||
| 159 : | return "ARRAY" if eval { $_ = @$ref; 1 }; | ||
| 160 : | return "SCALAR" if eval { $_ = $$ref; 1 }; | ||
| 161 : | return 0; | ||
| 162 : | sh002i | 422 | } |
| 163 : | |||
| 164 : | sh002i | 424 | # ----- |
| 165 : | |||
| 166 : | #sub hash2string($;$$) { | ||
| 167 : | # my $hr = shift; | ||
| 168 : | # my $table = shift || 0; | ||
| 169 : | # my $indent = shift || 0; | ||
| 170 : | # my $result = $table ? '<table border="1">' : ""; | ||
| 171 : | # foreach my $key (keys %$hr) { | ||
| 172 : | # my $value = $hr->{$key}; | ||
| 173 : | # $result .= $table | ||
| 174 : | # ? "<tr><td>$key</td>" | ||
| 175 : | # : "\t"x$indent . "{$key} ="; | ||
| 176 : | # if (ref $value eq 'HASH') { | ||
| 177 : | # $result .= $table ? "<td>" : "\n"; | ||
| 178 : | # $result .= hash2string($value, $table, $indent+1); | ||
| 179 : | # $result .= $table ? "</td>" : ""; | ||
| 180 : | # } elsif (ref $value eq 'ARRAY') { | ||
| 181 : | # $result .= $table ? "<td>" : "\n"; | ||
| 182 : | # $result .= array2string($value, $table, $indent+1); | ||
| 183 : | # $result .= $table ? "</td>" : ""; | ||
| 184 : | # } elsif (defined $value) { | ||
| 185 : | # $result .= $table | ||
| 186 : | # ? "<td>$value</td>" | ||
| 187 : | # : " $value\n"; | ||
| 188 : | # } else { | ||
| 189 : | # $result .= $table ? "" : "\n"; | ||
| 190 : | # } | ||
| 191 : | # $result .= $table ? "</tr>" : ""; | ||
| 192 : | # } | ||
| 193 : | # $result .= "</table>"; | ||
| 194 : | # return $result; | ||
| 195 : | #} | ||
| 196 : | # | ||
| 197 : | #sub array2string($;$$) { | ||
| 198 : | # my $ar = shift; | ||
| 199 : | # my $table = shift || 0; | ||
| 200 : | # my $indent = shift || 0; | ||
| 201 : | # my $result = $table ? '<table border="1">' : ""; | ||
| 202 : | # foreach my $index (0 .. @$ar-1) { | ||
| 203 : | # my $value = $ar->[$index]; | ||
| 204 : | # $result .= $table | ||
| 205 : | # ? "<tr><td>$index</td>" | ||
| 206 : | # : "\t"x$indent . "[$index] ="; | ||
| 207 : | # if (ref $value eq 'HASH') { | ||
| 208 : | # $result .= $table ? "<td>" : "\n"; | ||
| 209 : | # $result .= hash2string($value, $table, $indent+1); | ||
| 210 : | # $result .= $table ? "</td>" : ""; | ||
| 211 : | # } elsif (ref $value eq 'ARRAY') { | ||
| 212 : | # $result .= $table ? "<td>" : "\n"; | ||
| 213 : | # $result .= array2string($value, $table, $indent+1); | ||
| 214 : | # $result .= $table ? "</td>" : ""; | ||
| 215 : | # } elsif (defined $value) { | ||
| 216 : | # $result .= $table | ||
| 217 : | # ? "<td>$value</td>" | ||
| 218 : | # : " $value\n"; | ||
| 219 : | # } else { | ||
| 220 : | # $result .= $table ? "" : "\n"; | ||
| 221 : | # } | ||
| 222 : | # $result .= $table ? "</tr>" : ""; | ||
| 223 : | # } | ||
| 224 : | # $result .= "</table>"; | ||
| 225 : | # return $result; | ||
| 226 : | #} | ||
| 227 : | # | ||
| 228 : | #sub isHashRef($) { | ||
| 229 : | # my $ref = shift; | ||
| 230 : | # local $SIG{__DIE__} = 'IGNORE'; | ||
| 231 : | # $_ = eval{ %$ref }; | ||
| 232 : | # return not defined $@; | ||
| 233 : | #} | ||
| 234 : | # | ||
| 235 : | #sub isArrayRef($) { | ||
| 236 : | # my $ref = shift; | ||
| 237 : | # local $SIG{__DIE__} = 'IGNORE'; | ||
| 238 : | # $_ = eval{ @$ref }; | ||
| 239 : | # return not defined $@; | ||
| 240 : | #} | ||
| 241 : | |||
| 242 : | sh002i | 422 | 1; |
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