1 | package manifest;
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2 |
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3 | use strict;
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4 | no strict 'refs'; # allow filehandles to be variables and viceversa
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5 |
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6 | use XMLParser;
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7 | use dbutil;
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8 |
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9 | our $self;
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10 |
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11 | sub new {
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12 | my ($class) = shift (@_);
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13 | my ($infodbtype,$archivedir) = @_;
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14 |
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15 | $self = {} ;
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16 |
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17 | $self->{'index'} = {};
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18 | $self->{'reindex'} = {};
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19 | $self->{'delete'} = {};
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20 |
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21 | my $arcinfo_doc_filename
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22 | = &dbutil::get_infodb_file_path($infodbtype, "archiveinf-doc", $archivedir);
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23 |
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24 | if (-e $arcinfo_doc_filename) {
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25 | # Only store the infodb-doc filename if it exists
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26 | # If it doesn't exist then this means the collection has not been
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27 | # built yet (or else the archives folder has been deleted).
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28 | # Either way we have no way to look up which files
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29 | # are associated with an OID. If we we encounter an OID
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30 | # tag later on, we will use the fact that this field is
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31 | # not defined to issue a warning
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32 |
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33 | $self->{'_arcinfo-doc-filename'} = $arcinfo_doc_filename;
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34 | $self->{'_infodbtype'} = $infodbtype;
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35 | }
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36 |
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37 | return bless $self, $class;
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38 | }
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39 |
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40 | sub parse
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41 | {
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42 | my ($self) = shift (@_);
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43 | my ($filename) = @_;
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44 |
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45 | my $parser = new XML::Parser('Style' => 'Stream',
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46 | 'Handlers' => {'Char' => \&Char,
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47 | 'XMLDecl' => \&XMLDecl,
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48 | 'Entity' => \&Entity,
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49 | 'Doctype' => \&Doctype,
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50 | 'Default' => \&Default
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51 | });
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52 |
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53 | $parser->parsefile($filename);
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54 | }
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55 |
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56 | sub StartDocument {$self->xml_start_document(@_);}
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57 | sub XMLDecl {$self->xml_xmldecl(@_);}
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58 | sub Entity {$self->xml_entity(@_);}
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59 | sub Doctype {$self->xml_doctype(@_);}
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60 | sub StartTag {$self->xml_start_tag(@_);}
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61 | sub EndTag {$self->xml_end_tag(@_);}
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62 | sub Text {$self->xml_text(@_);}
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63 | sub PI {$self->xml_pi(@_);}
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64 | sub EndDocument {$self->xml_end_document(@_);}
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65 | sub Default {$self->xml_default(@_);}
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66 |
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67 | # This Char function overrides the one in XML::Parser::Stream to overcome a
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68 | # problem where $expat->{Text} is treated as the return value, slowing
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69 | # things down significantly in some cases.
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70 | sub Char {
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71 | use bytes; # Necessary to prevent encoding issues with XML::Parser 2.31+
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72 | $_[0]->{'Text'} .= $_[1];
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73 | return undef;
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74 | }
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75 |
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76 | # Called at the beginning of the XML document.
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77 | sub xml_start_document {
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78 | my $self = shift(@_);
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79 | my ($expat) = @_;
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80 |
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81 | }
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82 |
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83 | # Called for XML declarations
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84 | sub xml_xmldecl {
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85 | my $self = shift(@_);
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86 | my ($expat, $version, $encoding, $standalone) = @_;
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87 | }
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88 |
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89 | # Called for XML entities
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90 | sub xml_entity {
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91 | my $self = shift(@_);
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92 | my ($expat, $name, $val, $sysid, $pubid, $ndata) = @_;
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93 | }
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94 |
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95 | # Called for DOCTYPE declarations - use die to bail out if this doctype
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96 | # is not meant for this plugin
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97 | sub xml_doctype {
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98 | my $self = shift(@_);
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99 | my ($expat, $name, $sysid, $pubid, $internal) = @_;
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100 | die "Manifest Cannot process XML document with DOCTYPE of $name";
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101 | }
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102 |
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103 | # Called for every start tag. The $_ variable will contain a copy of the
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104 | # tag and the %_ variable will contain the element's attributes.
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105 | sub xml_start_tag
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106 | {
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107 | my $self = shift(@_);
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108 | my ($expat, $element) = @_;
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109 |
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110 | if (($element eq "Filename") || ($element eq "OID"))
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111 | {
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112 | $self->{'item-val'} = "";
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113 | }
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114 | elsif ($element eq "Manifest") {
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115 | }
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116 | else
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117 | {
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118 | if (defined($self->{'file-type'}))
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119 | {
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120 | print STDERR "Warning: Malformed XML manifest\n";
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121 | print STDERR " Unrecognized element $element nested inside " . $self->{'file-type'} . ".\n";
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122 | }
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123 | else {
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124 | my $filetype = lc($element);
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125 | $self->{'file-type'} = $filetype;
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126 | if (!defined $self->{$filetype}) {
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127 | print STDERR "Warning: <$element> is not one of the registered tags for manifest format.\n";
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128 | }
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129 | }
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130 |
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131 | }
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132 | }
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133 |
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134 | # Called for every end tag. The $_ variable will contain a copy of the tag.
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135 | sub xml_end_tag
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136 | {
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137 | my $self = shift(@_);
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138 | my ($expat, $element) = @_;
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139 |
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140 | if ($element eq "Filename")
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141 | {
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142 | my $filetype = $self->{'file-type'};
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143 | my $filename = $self->{'item-val'};
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144 |
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145 | $self->{$filetype}->{$filename} = 1;
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146 | $self->{'item-val'} = undef;
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147 | }
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148 | elsif ($element eq "OID") {
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149 | # look up src and assoc filenames used by this doc oid
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150 |
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151 | my $filetype = $self->{'file-type'};
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152 | my $oid = $self->{'item-val'};
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153 |
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154 | if (defined $self->{'_infodbtype'}) {
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155 |
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156 |
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157 | my $infodbtype = $self->{'_infodbtype'};
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158 | my $arcinfo_doc_filename = $self->{'_arcinfo-doc-filename'};
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159 |
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160 | my $doc_rec_string = &dbutil::read_infodb_entry($infodbtype, $arcinfo_doc_filename, $oid);
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161 |
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162 | my $doc_rec = &dbutil::convert_infodb_string_to_hash($doc_rec_string);
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163 |
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164 | my $doc_source_file = $doc_rec->{'src-file'}->[0];
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165 | my $assoc_files = $doc_rec->{'assoc-file'};
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166 | my @all_files = ($doc_source_file);
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167 | push(@all_files,@$assoc_files) if defined $assoc_files;
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168 |
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169 | foreach my $filename (@all_files) {
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170 |
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171 | if (!&util::filename_is_absolute($filename)) {
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172 | $filename = &util::filename_cat($ENV{'GSDLCOLLECTDIR'},$filename);
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173 | }
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174 |
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175 | $self->{$filetype}->{$filename} = 1;
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176 | }
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177 | }
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178 | else {
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179 | print STDERR "Warning: No archiveinf-doc database in archives directory.\n";
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180 | print STDERR " Unable to look up source files that constitute document $oid.\n";
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181 | }
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182 |
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183 | $self->{'item-val'} = undef;
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184 | }
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185 | else
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186 | {
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187 | $self->{'file-type'} = undef;
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188 | }
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189 | }
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190 |
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191 | # Called just before start or end tags with accumulated non-markup text in
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192 | # the $_ variable.
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193 | sub xml_text {
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194 | my $self = shift(@_);
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195 | my ($expat) = @_;
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196 |
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197 | if (defined $self->{'item-val'}) {
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198 | my $text = $_;
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199 | chomp($text);
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200 |
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201 | $text =~ s/^\s+//;
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202 | $text =~ s/\s+$//;
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203 |
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204 | $self->{'item-val'} .= $text if ($text !~ m/^\s*$/);
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205 | }
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206 | }
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207 |
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208 | # Called for processing instructions. The $_ variable will contain a copy
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209 | # of the pi.
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210 | sub xml_pi {
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211 | my $self = shift(@_);
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212 | my ($expat, $target, $data) = @_;
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213 | }
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214 |
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215 | # Called at the end of the XML document.
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216 | sub xml_end_document {
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217 | my $self = shift(@_);
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218 | my ($expat) = @_;
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219 |
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220 | if (defined $self->{'import'}) {
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221 | print STDERR "Warning: <Import> tag is deprecated.\n";
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222 | print STDERR " Processing data as if it were tagged as <Index>\n";
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223 | $self->{'index'} = $self->{'import'};
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224 | }
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225 |
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226 | }
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227 |
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228 | # Called for any characters not handled by the above functions.
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229 | sub xml_default {
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230 | my $self = shift(@_);
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231 | my ($expat, $text) = @_;
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232 | }
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233 |
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234 |
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235 | 1;
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