| 1 |
#!/usr/bin/perl |
| 2 |
|
| 3 |
#-------------------------------------------------------------------------- |
| 4 |
# |
| 5 |
# Author: Dobrica Pavlinusic |
| 6 |
# Creation Date: 2002-03-17 |
| 7 |
|
| 8 |
|
| 9 |
#-------------------------------------------------------------------------- |
| 10 |
# |
| 11 |
# Description: |
| 12 |
# |
| 13 |
# This package implements the various filters for this database |
| 14 |
# |
| 15 |
|
| 16 |
#-------------------------------------------------------------------------- |
| 17 |
# |
| 18 |
# Pragmatic modules |
| 19 |
# |
| 20 |
|
| 21 |
use strict; |
| 22 |
|
| 23 |
|
| 24 |
#-------------------------------------------------------------------------- |
| 25 |
# |
| 26 |
# Package definition |
| 27 |
# |
| 28 |
|
| 29 |
package default; |
| 30 |
|
| 31 |
|
| 32 |
#-------------------------------------------------------------------------- |
| 33 |
# |
| 34 |
# Application Constants |
| 35 |
# |
| 36 |
|
| 37 |
#-------------------------------------------------------------------------- |
| 38 |
# |
| 39 |
# Function: DocumentParser() |
| 40 |
# |
| 41 |
# Purpose: This function serves as a document parser |
| 42 |
# |
| 43 |
# Called by: DocumentFilter(), SummaryFilter() |
| 44 |
# |
| 45 |
# Parameters: $Database Database name |
| 46 |
# $DocumentID Document ID |
| 47 |
# $ItemName Item name |
| 48 |
# $MimeType Mime type |
| 49 |
# $DocumentRaw Raw document text |
| 50 |
# |
| 51 |
# Global Variables: |
| 52 |
# |
| 53 |
# Returns: A hash table of the document fields |
| 54 |
# |
| 55 |
sub DocumentParser { |
| 56 |
|
| 57 |
my ($Database, $DocumentID, $ItemName, $MimeType, $DocumentRaw) = @_; |
| 58 |
|
| 59 |
my (%Document, @DocumentLines, $DocumentLine); |
| 60 |
my ($FieldTag, $FieldData, $Separator); |
| 61 |
|
| 62 |
@DocumentLines = split(/\n/, $DocumentRaw); |
| 63 |
|
| 64 |
# Extract the document |
| 65 |
foreach $DocumentLine ( @DocumentLines ) { |
| 66 |
# check if this is a new field? |
| 67 |
if ( $DocumentLine =~ /%(\S+)\s*(.*)/ ) { |
| 68 |
$FieldTag = $1; |
| 69 |
$FieldData = $2; |
| 70 |
if ($default::Separator{$FieldTag}) { |
| 71 |
$Separator = $default::Separator{$FieldTag}; |
| 72 |
} else { |
| 73 |
$Separator = ";"; |
| 74 |
} |
| 75 |
} |
| 76 |
else { |
| 77 |
$FieldData = $DocumentLine; |
| 78 |
$Separator = "\n"; |
| 79 |
} |
| 80 |
|
| 81 |
if ( defined($Document{$FieldTag}) ) { |
| 82 |
$Document{$FieldTag} .= $Separator . $FieldData; |
| 83 |
} |
| 84 |
else { |
| 85 |
$Document{$FieldTag} = $FieldData; |
| 86 |
} |
| 87 |
} |
| 88 |
|
| 89 |
return (%Document); |
| 90 |
|
| 91 |
} |
| 92 |
|
| 93 |
|
| 94 |
#-------------------------------------------------------------------------- |
| 95 |
# |
| 96 |
# Function: DocumentFilter() |
| 97 |
# |
| 98 |
# Purpose: This function is the document filter |
| 99 |
# |
| 100 |
# Called by: external |
| 101 |
# |
| 102 |
# Parameters: $Database Database name |
| 103 |
# $DocumentID Document ID |
| 104 |
# $ItemName Item name |
| 105 |
# $MimeType Mime type |
| 106 |
# $DocumentRaw Raw document text |
| 107 |
# |
| 108 |
# Global Variables: %default::FieldNames, @default::FieldDisplayOrder |
| 109 |
# |
| 110 |
# Returns: The filtered document |
| 111 |
# |
| 112 |
sub DocumentFilter { |
| 113 |
|
| 114 |
my ($Database, $DocumentID, $ItemName, $MimeType, $DocumentRaw) = @_; |
| 115 |
|
| 116 |
my (%Document, $DocumentFinal, $FieldTag, $CommaFlag); |
| 117 |
my ($SearchTerm, @Authors, $Author, @AuthorNames, $AuthorName, @Keywords, $Keyword, @OrderNumbers, $OrderNumber); |
| 118 |
|
| 119 |
if ( !defined($DocumentRaw) ) { |
| 120 |
return (undef); |
| 121 |
} |
| 122 |
|
| 123 |
|
| 124 |
%Document = &DocumentParser($Database, $DocumentID, $ItemName, $MimeType, $DocumentRaw); |
| 125 |
|
| 126 |
$DocumentFinal = "<TABLE BORDER=0 CELLPADDING=0 CELLSPACING=2 WIDTH=100%> \n"; |
| 127 |
# $DocumentFinal .= "<TR><TD COLSPAN=2 VALIGN=TOP ALIGN=CENTER><H3> $Document{'T'} </H3></TD></TR> \n"; |
| 128 |
|
| 129 |
# Loop over each line in the document list |
| 130 |
foreach $FieldTag ( @default::FieldDisplayOrder ) { |
| 131 |
|
| 132 |
# print "-- $FieldTag = $Document{$FieldTag} --"; |
| 133 |
|
| 134 |
# Skip empty slots |
| 135 |
if ( !(defined($Document{$FieldTag}) && ($Document{$FieldTag} ne "")) ) { |
| 136 |
next; |
| 137 |
} |
| 138 |
|
| 139 |
|
| 140 |
# Print the row start |
| 141 |
$DocumentFinal .= "<TR><TD VALIGN=TOP ALIGN=RIGHT BGCOLOR=\"#EEEEEE\" WIDTH=\"130\"> $default::FieldNames{$FieldTag}: </TD><TD VALIGN=TOP ALIGN=LEFT> "; |
| 142 |
|
| 143 |
sub html_enc { |
| 144 |
my $tmp = $_[0]; |
| 145 |
$tmp =~ s/&/∧/g; |
| 146 |
$tmp =~ s/</</g; |
| 147 |
$tmp =~ s/>/>/g; |
| 148 |
# fix some tags |
| 149 |
$tmp =~ s/<br>/<br>/gi; |
| 150 |
return $tmp; |
| 151 |
} |
| 152 |
|
| 153 |
$Document{$FieldTag} = html_enc($Document{$FieldTag}); |
| 154 |
|
| 155 |
# Print the field data, marking up if needed |
| 156 |
if ( $FieldTag eq "A" || $FieldTag eq "E" ) { |
| 157 |
$CommaFlag = 0; |
| 158 |
@Authors = split(/;/, $Document{$FieldTag}); |
| 159 |
foreach $Author ( @Authors ) { |
| 160 |
if ( $CommaFlag ) { |
| 161 |
$DocumentFinal .= ", "; |
| 162 |
} |
| 163 |
$CommaFlag = 1; |
| 164 |
$SearchTerm = $Author; |
| 165 |
$SearchTerm =~ s/,//g; |
| 166 |
@AuthorNames = split(/ /, $SearchTerm); |
| 167 |
$SearchTerm = ""; |
| 168 |
foreach $AuthorName ( @AuthorNames ) { |
| 169 |
if ( ! ($AuthorName =~ /^\w+\.$/) ) { |
| 170 |
if ( $AuthorName ne "" ) { |
| 171 |
$AuthorName .= " "; |
| 172 |
} |
| 173 |
$SearchTerm .= $AuthorName; |
| 174 |
} |
| 175 |
} |
| 176 |
$SearchTerm =~ s/ /+/g; |
| 177 |
$DocumentFinal .= "<A HREF=\"$ENV{'SCRIPT_NAME'}/GetSearchResults?Database=$Database&FieldName1=author&FieldContent1=%22$SearchTerm%22\"> $Author </A>"; |
| 178 |
} |
| 179 |
} |
| 180 |
elsif ( $FieldTag eq "K" ) { |
| 181 |
$CommaFlag = 0; |
| 182 |
@Keywords = split(/,/, $Document{$FieldTag}); |
| 183 |
foreach $Keyword ( @Keywords ) { |
| 184 |
if ( $CommaFlag ) { |
| 185 |
$DocumentFinal .= ", "; |
| 186 |
} |
| 187 |
$CommaFlag = 1; |
| 188 |
$SearchTerm = $Keyword; |
| 189 |
$SearchTerm =~ s/ /+/g; |
| 190 |
$DocumentFinal .= "<A HREF=\"$ENV{'SCRIPT_NAME'}/GetSearchResults?Database=$Database&FieldName1=keyword&FieldContent1=%22$SearchTerm%22\"> $Keyword </A>"; |
| 191 |
} |
| 192 |
} |
| 193 |
elsif ( $FieldTag eq "W" ) { |
| 194 |
$DocumentFinal .= "<A HREF=\"$Document{$FieldTag}\" TARGET=\"BlankWindow\"> $Document{$FieldTag} </A>"; |
| 195 |
} |
| 196 |
elsif ( $FieldTag eq "Y" ) { |
| 197 |
$DocumentFinal .= "<PRE>$Document{$FieldTag}</PRE>"; |
| 198 |
} |
| 199 |
else { |
| 200 |
$DocumentFinal .= "$Document{$FieldTag}"; |
| 201 |
} |
| 202 |
|
| 203 |
$DocumentFinal .= "</TD></TR> \n"; |
| 204 |
|
| 205 |
} |
| 206 |
|
| 207 |
|
| 208 |
# List any external links we may have |
| 209 |
if ( defined($Document{'G'}) ) { |
| 210 |
|
| 211 |
@OrderNumbers = split(/; /, $Document{'G'}); |
| 212 |
|
| 213 |
$DocumentFinal .= "<TR><TD COLSPAN=2> <HR WIDTH=50%> </TD></TR>"; |
| 214 |
$DocumentFinal .= "<TR><TD VALIGN=TOP ALIGN=LEFT> <B> External Links: </B> </TD><TD VALIGN=TOP ALIGN=LEFT><UL>"; |
| 215 |
|
| 216 |
foreach $OrderNumber ( @OrderNumbers ) { |
| 217 |
|
| 218 |
if ( $OrderNumber =~ /ISBN\s*(\S*)/ ) { |
| 219 |
$OrderNumber = $1; |
| 220 |
$OrderNumber =~ s/-//g; |
| 221 |
$DocumentFinal .= "<LI><A HREF=\"http://www.amazon.com/exec/obidos/ASIN/$OrderNumber\" TARGET=\"BlankWindow\"> Get this book from Amazon.com </A></LI>"; |
| 222 |
$DocumentFinal .= "<LI><A HREF=\"http://search.borders.com/fcgi-bin/db2www/search/search.d2w/Details?mediaType=Book&searchType=ISBNUPC&code=$OrderNumber\" TARGET=\"BlankWindow\"> Get this book from Borders </A></LI>"; |
| 223 |
$DocumentFinal .= "<LI><A HREF=\"http://shop.barnesandnoble.com/bookSearch/isbnInquiry.asp?isbn=$OrderNumber\" TARGET=\"BlankWindow\"> Get this book from Barnes & Noble </A></LI>"; |
| 224 |
} |
| 225 |
} |
| 226 |
|
| 227 |
$DocumentFinal .= "</UL></TD></TR>"; |
| 228 |
} |
| 229 |
|
| 230 |
$DocumentFinal .= "</TABLE> \n"; |
| 231 |
|
| 232 |
return ($DocumentFinal); |
| 233 |
|
| 234 |
} |
| 235 |
|
| 236 |
|
| 237 |
|
| 238 |
#-------------------------------------------------------------------------- |
| 239 |
# |
| 240 |
# Function: SummaryFilter() |
| 241 |
# |
| 242 |
# Purpose: This function is the summary filter |
| 243 |
# |
| 244 |
# Called by: external |
| 245 |
# |
| 246 |
# Parameters: $Database Database name |
| 247 |
# $DocumentID Document ID |
| 248 |
# $ItemName Item name |
| 249 |
# $MimeType Mime type |
| 250 |
# $DocumentRaw Raw document text |
| 251 |
# |
| 252 |
# Global Variables: none |
| 253 |
# |
| 254 |
# Returns: The filtered summary |
| 255 |
# |
| 256 |
sub SummaryFilter { |
| 257 |
|
| 258 |
my ($Database, $DocumentID, $ItemName, $MimeType, $DocumentRaw) = @_; |
| 259 |
|
| 260 |
my (%Document, $Summary); |
| 261 |
|
| 262 |
|
| 263 |
if ( !defined($DocumentRaw) ) { |
| 264 |
return (undef); |
| 265 |
} |
| 266 |
|
| 267 |
|
| 268 |
# Parse the document |
| 269 |
%Document = &DocumentParser($Database, $DocumentID, $ItemName, $MimeType, $DocumentRaw); |
| 270 |
|
| 271 |
|
| 272 |
# Select the abstract if available |
| 273 |
if ( defined($Document{'X'}) ) { |
| 274 |
$Summary = $Document{'X'}; |
| 275 |
} |
| 276 |
|
| 277 |
# Select the table of contents if available |
| 278 |
elsif ( defined($Document{'Y'}) ) { |
| 279 |
$Summary = $Document{'Y'}; |
| 280 |
} |
| 281 |
|
| 282 |
# Select the keywords if available |
| 283 |
elsif ( defined($Document{'K'}) ) { |
| 284 |
$Summary = $Document{'K'}; |
| 285 |
} |
| 286 |
|
| 287 |
|
| 288 |
# Clean the summary text |
| 289 |
if ( defined($Summary) ) { |
| 290 |
# First clean up the text |
| 291 |
if ( index($Summary, "\r\n") >= 0 ) { |
| 292 |
$Summary =~ s/\r//gs; |
| 293 |
} |
| 294 |
elsif ( index($Summary, "\r") >= 0 ) { |
| 295 |
$Summary =~ s/\r/\n/gs; |
| 296 |
} |
| 297 |
$Summary =~ s/\n/ /gs; |
| 298 |
$Summary =~ s/\s+/ /gs; |
| 299 |
$Summary = ucfirst($Summary); |
| 300 |
} |
| 301 |
|
| 302 |
return ($Summary); |
| 303 |
|
| 304 |
} |
| 305 |
|
| 306 |
|
| 307 |
|
| 308 |
#-------------------------------------------------------------------------- |
| 309 |
# |
| 310 |
# Function: RelevanceFeedbackFilter() |
| 311 |
# |
| 312 |
# Purpose: This function is the relevance feedback filter |
| 313 |
# |
| 314 |
# Called by: external |
| 315 |
# |
| 316 |
# Parameters: $Database Database name |
| 317 |
# $DocumentID Document ID |
| 318 |
# $ItemName Item name |
| 319 |
# $MimeType Mime type |
| 320 |
# $DocumentRaw Raw document text |
| 321 |
# |
| 322 |
# Global Variables: none |
| 323 |
# |
| 324 |
# Returns: The filtered relevance feedback |
| 325 |
# |
| 326 |
sub RelevanceFeedbackFilter { |
| 327 |
|
| 328 |
my ($Database, $DocumentID, $ItemName, $MimeType, $DocumentRaw) = @_; |
| 329 |
|
| 330 |
my (%Document, $RelevanceFeedback); |
| 331 |
|
| 332 |
|
| 333 |
if ( !defined($DocumentRaw) ) { |
| 334 |
return (undef); |
| 335 |
} |
| 336 |
|
| 337 |
|
| 338 |
# Parse the document |
| 339 |
%Document = &DocumentParser($Database, $DocumentID, $ItemName, $MimeType, $DocumentRaw); |
| 340 |
|
| 341 |
|
| 342 |
# Select the abstract if available |
| 343 |
if ( defined($Document{'X'}) ) { |
| 344 |
$RelevanceFeedback = $Document{'X'}; |
| 345 |
} |
| 346 |
|
| 347 |
# Select the table of contents if available |
| 348 |
elsif ( defined($Document{'Y'}) ) { |
| 349 |
$RelevanceFeedback = $Document{'Y'}; |
| 350 |
} |
| 351 |
|
| 352 |
# Select the keywords if available |
| 353 |
elsif ( defined($Document{'K'}) ) { |
| 354 |
$RelevanceFeedback = $Document{'K'}; |
| 355 |
} |
| 356 |
|
| 357 |
# Select the title if available |
| 358 |
elsif ( defined($Document{'T'}) ) { |
| 359 |
$RelevanceFeedback = $Document{'T'}; |
| 360 |
} |
| 361 |
|
| 362 |
# Select the author if available |
| 363 |
elsif ( defined($Document{'A'}) ) { |
| 364 |
$RelevanceFeedback = $Document{'A'}; |
| 365 |
} |
| 366 |
|
| 367 |
return ($RelevanceFeedback); |
| 368 |
|
| 369 |
} |
| 370 |
|
| 371 |
|
| 372 |
|
| 373 |
#-------------------------------------------------------------------------- |
| 374 |
|
| 375 |
1; |
Parent Directory
| 
Revision Log