1 | ###########################################################################
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2 | #
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3 | # basebuildproc.pm --
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4 | # A component of the Greenstone digital library software
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5 | # from the New Zealand Digital Library Project at the
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6 | # University of Waikato, New Zealand.
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7 | #
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8 | # Copyright (C) 1999 New Zealand Digital Library Project
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9 | #
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10 | # This program is free software; you can redistribute it and/or modify
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11 | # it under the terms of the GNU General Public License as published by
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12 | # the Free Software Foundation; either version 2 of the License, or
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13 | # (at your option) any later version.
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14 | #
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15 | # This program is distributed in the hope that it will be useful,
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16 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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17 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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18 | # GNU General Public License for more details.
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19 | #
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20 | # You should have received a copy of the GNU General Public License
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21 | # along with this program; if not, write to the Free Software
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22 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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23 | #
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24 | ###########################################################################
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25 |
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26 | # This document processor outputs a document for indexing (should be
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27 | # implemented by subclass) and storing in gdbm database
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28 |
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29 | package basebuildproc;
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30 |
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31 | eval {require bytes};
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32 |
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33 | use classify;
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34 | use doc;
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35 | use docproc;
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36 | use util;
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37 |
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38 | BEGIN {
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39 | @basebuildproc::ISA = ('docproc');
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40 | }
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41 |
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42 | sub new {
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43 | my ($class, $collection, $source_dir, $build_dir, $keepold,
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44 | $verbosity, $outhandle) = @_;
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45 | my $self = new docproc ();
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46 |
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47 | # outhandle is where all the debugging info goes
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48 | # output_handle is where the output of the plugins is piped
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49 | # to (i.e. mg, gdbm etc.)
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50 | $outhandle = STDERR unless defined $outhandle;
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51 |
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52 | $self->{'collection'} = $collection;
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53 | $self->{'source_dir'} = $source_dir;
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54 | $self->{'build_dir'} = $build_dir;
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55 | $self->{'keepold'} = $keepold;
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56 | $self->{'verbosity'} = $verbosity;
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57 | $self->{'outhandle'} = $outhandle;
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58 |
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59 | $self->{'classifiers'} = [];
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60 | $self->{'mode'} = "text";
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61 | $self->{'assocdir'} = $build_dir;
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62 | $self->{'dontgdbm'} = {};
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63 |
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64 | $self->{'index'} = "section:text";
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65 | $self->{'indexexparr'} = [];
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66 |
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67 | my $found_num_data = 0;
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68 | my $buildconfigfile = undef;
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69 |
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70 | if ($keepold) {
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71 | # For incremental building need to seed num_docs etc from values
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72 | # stored in build.cfg (if present)
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73 |
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74 | $buildconfigfile = &util::filename_cat($build_dir, "build.cfg");
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75 |
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76 | if (-e $buildconfigfile) {
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77 | $found_num_data = 1;
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78 | }
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79 | else {
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80 | # try the index dir
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81 | $buildconfigfile = &util::filename_cat($ENV{'GSDLCOLLECTDIR'},
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82 | "index", "build.cfg");
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83 | if (-e $buildconfigfile) {
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84 | $found_num_data = 1;
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85 | }
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86 | }
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87 |
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88 | }
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89 |
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90 | if ($found_num_data) {
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91 | my $buildcfg = &colcfg::read_build_cfg($buildconfigfile);
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92 |
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93 | $self->{'starting_num_docs'} = $buildcfg->{'numdocs'};
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94 | $self->{'starting_num_sections'} = $buildcfg->{'numsections'};
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95 | $self->{'starting_num_bytes'} = $buildcfg->{'numbytes'};
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96 | }
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97 | else {
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98 | $self->{'starting_num_docs'} = 0;
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99 | $self->{'starting_num_sections'} = 0;
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100 | $self->{'starting_num_bytes'} = 0;
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101 | }
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102 |
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103 | $self->{'output_handle'} = "STDOUT";
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104 | $self->{'num_docs'} = $self->{'starting_num_docs'};
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105 | $self->{'num_sections'} = $self->{'starting_num_sections'};
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106 | $self->{'num_bytes'} = $self->{'starting_num_bytes'};
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107 |
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108 | $self->{'num_processed_bytes'} = 0;
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109 | $self->{'store_text'} = 1;
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110 |
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111 | # what level (section/document) the gdbm database - indexer intersection is
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112 | $self->{'gdbm_level'} = "section";
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113 | #used by browse interface
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114 | $self->{'doclist'} = [];
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115 |
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116 | $self->{'indexing_text'} = 0;
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117 |
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118 | return bless $self, $class;
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119 |
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120 | }
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121 |
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122 | sub reset {
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123 | my $self = shift (@_);
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124 |
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125 | $self->{'num_docs'} = $self->{'starting_num_docs'};
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126 | $self->{'num_sections'} = $self->{'starting_num_sections'};
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127 | $self->{'num_bytes'} = $self->{'starting_num_bytes'};
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128 |
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129 | $self->{'num_processed_bytes'} = 0;
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130 | }
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131 |
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132 | sub zero_reset {
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133 | my $self = shift (@_);
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134 |
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135 | $self->{'num_docs'} = 0;
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136 | $self->{'num_sections'} = 0;
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137 | $self->{'num_bytes'} = 0;
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138 |
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139 | $self->{'num_processed_bytes'} = 0;
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140 | }
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141 |
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142 | sub is_incremental_capable
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143 | {
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144 | # By default we return 'no' as the answer
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145 | # Safer to assume non-incremental to start with, and then override in
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146 | # inherited classes that are.
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147 |
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148 | return 0;
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149 | }
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150 |
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151 | sub get_num_docs {
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152 | my $self = shift (@_);
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153 |
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154 | return $self->{'num_docs'};
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155 | }
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156 |
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157 | sub get_num_sections {
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158 | my $self = shift (@_);
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159 |
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160 | return $self->{'num_sections'};
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161 | }
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162 |
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163 | # num_bytes is the actual number of bytes in the collection
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164 | # this is normally the same as what's processed during text compression
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165 | sub get_num_bytes {
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166 | my $self = shift (@_);
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167 |
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168 | return $self->{'num_bytes'};
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169 | }
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170 |
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171 | # num_processed_bytes is the number of bytes actually passed
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172 | # to mg for the current index
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173 | sub get_num_processed_bytes {
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174 | my $self = shift (@_);
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175 |
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176 | return $self->{'num_processed_bytes'};
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177 | }
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178 |
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179 | sub set_output_handle {
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180 | my $self = shift (@_);
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181 | my ($handle) = @_;
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182 |
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183 | $self->{'output_handle'} = $handle;
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184 | }
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185 |
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186 |
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187 | sub set_mode {
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188 | my $self = shift (@_);
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189 | my ($mode) = @_;
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190 |
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191 | $self->{'mode'} = $mode;
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192 | }
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193 |
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194 | sub get_mode {
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195 | my $self = shift (@_);
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196 |
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197 | return $self->{'mode'};
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198 | }
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199 |
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200 | sub set_assocdir {
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201 | my $self = shift (@_);
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202 | my ($assocdir) = @_;
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203 |
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204 | $self->{'assocdir'} = $assocdir;
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205 | }
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206 |
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207 | sub set_dontgdbm {
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208 | my $self = shift (@_);
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209 | my ($dontgdbm) = @_;
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210 |
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211 | $self->{'dontgdbm'} = $dontgdbm;
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212 | }
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213 |
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214 | sub set_index {
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215 | my $self = shift (@_);
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216 | my ($index, $indexexparr) = @_;
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217 |
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218 | $self->{'index'} = $index;
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219 | $self->{'indexexparr'} = $indexexparr if defined $indexexparr;
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220 | }
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221 |
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222 | sub set_index_languages {
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223 | my $self = shift (@_);
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224 | my ($lang_meta, $langarr) = @_;
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225 | $self->{'lang_meta'} = $lang_meta;
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226 | $self->{'langarr'} = $langarr;
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227 | }
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228 |
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229 | sub get_index {
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230 | my $self = shift (@_);
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231 |
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232 | return $self->{'index'};
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233 | }
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234 |
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235 | sub set_classifiers {
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236 | my $self = shift (@_);
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237 | my ($classifiers) = @_;
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238 |
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239 | $self->{'classifiers'} = $classifiers;
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240 | }
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241 |
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242 | sub set_indexing_text {
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243 | my $self = shift (@_);
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244 | my ($indexing_text) = @_;
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245 |
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246 | $self->{'indexing_text'} = $indexing_text;
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247 | }
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248 |
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249 | sub get_indexing_text {
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250 | my $self = shift (@_);
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251 |
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252 | return $self->{'indexing_text'};
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253 | }
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254 |
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255 | sub set_store_text {
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256 | my $self = shift (@_);
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257 | my ($store_text) = @_;
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258 |
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259 | $self->{'store_text'} = $store_text;
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260 | }
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261 | sub get_doc_list {
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262 | my $self = shift(@_);
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263 |
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264 | return @{$self->{'doclist'}};
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265 | }
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266 |
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267 | # the standard gdbm level is section, but you may want to change it to document
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268 | sub set_gdbm_level {
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269 | my $self= shift (@_);
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270 | my ($gdbm_level) = @_;
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271 |
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272 | $self->{'gdbm_level'} = $gdbm_level;
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273 | }
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274 |
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275 | sub set_sections_index_document_metadata {
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276 | my $self= shift (@_);
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277 | my ($index_type) = @_;
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278 |
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279 | $self->{'sections_index_document_metadata'} = $index_type;
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280 | }
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281 | sub process {
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282 | my $self = shift (@_);
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283 | my $method = $self->{'mode'};
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284 |
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285 | $self->$method(@_);
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286 | }
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287 |
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288 | sub infodb {
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289 | my $self = shift (@_);
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290 | my ($doc_obj, $filename) = @_;
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291 | my $handle = $self->{'output_handle'};
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292 |
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293 | my $doctype = $doc_obj->get_doc_type();
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294 |
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295 | # only output this document if it is one to be indexed
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296 | return if ($doctype ne "indexed_doc");
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297 |
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298 | my ($archivedir) = $filename =~ /^(.*?)(?:\/|\\)[^\/\\]*$/;
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299 | $archivedir = "" unless defined $archivedir;
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300 | $archivedir =~ s/\\/\//g;
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301 | $archivedir =~ s/^\/+//;
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302 | $archivedir =~ s/\/+$//;
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303 |
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304 | # resolve the final filenames of the files associated with this document
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305 | $self->assoc_files ($doc_obj, $archivedir);
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306 |
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307 | #GRB: moved 1/06/2004 from GRB01062004
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308 | #add this document to the browse structure
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309 | push(@{$self->{'doclist'}},$doc_obj->get_OID())
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310 | unless ($doctype eq "classification");
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311 |
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312 | # classify this document
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313 | &classify::classify_doc ($self->{'classifiers'}, $doc_obj);
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314 | #GRB: end of moved block
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315 |
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316 | # this is another document
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317 | $self->{'num_docs'} += 1 unless ($doctype eq "classification");
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318 |
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319 | # is this a paged or a hierarchical document
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320 | my ($thistype, $childtype) = $self->get_document_type ($doc_obj);
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321 |
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322 | my $section = $doc_obj->get_top_section ();
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323 | my $doc_OID = $doc_obj->get_OID();
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324 | my $first = 1;
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325 | my $url = "";
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326 | while (defined $section) {
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327 | # update a few statistics
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328 | $self->{'num_bytes'} += $doc_obj->get_text_length ($section);
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329 | $self->{'num_sections'} += 1 unless ($doctype eq "classification");
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330 |
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331 | # output the section name
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332 | if ($section eq "") { print $handle "[$doc_OID]\n"; }
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333 | else { print $handle "[$doc_OID.$section]\n"; }
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334 |
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335 | # output the fact that this document is a document (unless doctype
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336 | # has been set to something else from within a plugin
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337 | my $dtype = $doc_obj->get_metadata_element ($section, "doctype");
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338 | if (!defined $dtype || $dtype !~ /\w/) {
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339 | print $handle "<doctype>doc\n";
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340 | }
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341 |
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342 | # output whether this node contains text
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343 | if ($doc_obj->get_text_length($section) > 0) {
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344 | print $handle "<hastxt>1\n";
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345 | } else {
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346 | print $handle "<hastxt>0\n";
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347 | }
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348 |
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349 | # output all the section metadata
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350 | my $metadata = $doc_obj->get_all_metadata ($section);
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351 | foreach my $pair (@$metadata) {
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352 | my ($field, $value) = (@$pair);
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353 |
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354 | if ($field ne "Identifier" && $field !~ /^gsdl/ &&
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355 | defined $value && $value ne "") {
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356 |
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357 | # escape problematic stuff
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358 | $value =~ s/\\/\\\\/g;
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359 | $value =~ s/\n/\\n/g;
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360 | $value =~ s/\r/\\r/g;
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361 | if ($value =~ /-{70,}/) {
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362 | # if value contains 70 or more hyphens in a row we need
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363 | # to escape them to prevent txt2db from treating them
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364 | # as a separator
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365 | $value =~ s/-/&\#045;/gi;
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366 | }
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367 |
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368 | # special case for URL metadata
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369 | if ($field =~ /^URL$/i) {
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370 | $url .= "[$value]\n";
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371 | if ($section eq "") {$url .= "<section>$doc_OID\n";}
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372 | else {$url .= "<section>$doc_OID.$section\n";}
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373 | $url .= '-' x 70 . "\n";
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374 | }
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375 |
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376 | if (!defined $self->{'dontgdbm'}->{$field}) {
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377 | print $handle "<$field>$value\n";
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378 | }
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379 | }
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380 | }
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381 |
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382 | # output archivedir if at top level
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383 | if ($section eq $doc_obj->get_top_section()) {
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384 | print $handle "<archivedir>$archivedir\n";
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385 | }
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386 |
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387 | # output document display type
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388 | if ($first) {
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389 | print $handle "<thistype>$thistype\n";
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390 | }
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391 |
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392 | if ($self->{'gdbm_level'} eq "document") {
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393 | # doc num is num_docs not num_sections
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394 | # output the matching document number
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395 | print $handle "<docnum>$self->{'num_docs'}\n";
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396 | } else {
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397 | # output a list of children
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398 | my $children = $doc_obj->get_children ($section);
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399 | if (scalar(@$children) > 0) {
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400 | print $handle "<childtype>$childtype\n";
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401 | print $handle "<contains>";
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402 | my $firstchild = 1;
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403 | foreach my $child (@$children) {
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404 | print $handle ";" unless $firstchild;
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405 | $firstchild = 0;
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406 | if ($child =~ /^.*?\.(\d+)$/) {
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407 | print $handle "\".$1";
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408 | } else {
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409 | print $handle "\".$child";
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410 | }
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411 | # if ($child eq "") { print $handle "$doc_OID"; }
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412 | # elsif ($section eq "") { print $handle "$doc_OID.$child"; }
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413 | # else { print $handle "$doc_OID.$section.$child"; }
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414 | }
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415 | print $handle "\n";
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416 | }
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417 | #output the matching doc number
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418 | print $handle "<docnum>$self->{'num_sections'}\n";
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419 |
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420 | }
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421 |
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422 | print $handle '-' x 70, "\n";
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423 |
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424 |
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425 | # output a database entry for the document number
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426 | if ($self->{'gdbm_level'} eq "document") {
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427 | print $handle "[$self->{'num_docs'}]\n";
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428 | print $handle "<section>$doc_OID\n";
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429 | }
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430 | else {
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431 | print $handle "[$self->{'num_sections'}]\n";
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432 | if ($section eq "") { print $handle "<section>$doc_OID\n"; }
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433 | else { print $handle "<section>$doc_OID.$section\n"; }
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434 | }
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435 | print $handle '-' x 70, "\n";
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436 |
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437 | # output entry for url
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438 | if ($url ne "") {
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439 | print $handle $url;
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440 | }
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441 |
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442 | $first = 0;
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443 | $section = $doc_obj->get_next_section($section);
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444 | last if ($self->{'gdbm_level'} eq "document"); # if no sections wanted, only gdbm the docs
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445 | }
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446 |
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447 | #GRB01062004: see code above moved from here
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448 | }
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449 |
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450 |
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451 | sub text {
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452 | my $self = shift (@_);
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453 | my ($doc_obj) = @_;
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454 |
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455 | my $handle = $self->{'outhandle'};
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456 | print $handle "basebuildproc::text function must be implemented in sub classes\n";
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457 | die "\n";
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458 | }
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459 |
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460 | # should the document be indexed - according to the subcollection and language
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461 | # specification.
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462 | sub is_subcollection_doc {
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463 | my $self = shift (@_);
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464 | my ($doc_obj) = @_;
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465 |
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466 | my $indexed_doc = 1;
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467 | foreach my $indexexp (@{$self->{'indexexparr'}}) {
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468 | $indexed_doc = 0;
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469 | my ($field, $exp, $options) = split /\//, $indexexp;
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470 | if (defined ($field) && defined ($exp)) {
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471 | my ($bool) = $field =~ /^(.)/;
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472 | $field =~ s/^.// if $bool eq '!';
|
---|
473 | my @metadata_values;
|
---|
474 | if ($field =~ /^filename$/i) {
|
---|
475 | push(@metadata_values, $doc_obj->get_source_filename());
|
---|
476 | }
|
---|
477 | else {
|
---|
478 | @metadata_values = @{$doc_obj->get_metadata($doc_obj->get_top_section(), $field)};
|
---|
479 | }
|
---|
480 | next unless @metadata_values;
|
---|
481 | foreach my $metadata_value (@metadata_values) {
|
---|
482 | if ($bool eq '!') {
|
---|
483 | if ($options =~ /^i$/i) {
|
---|
484 | if ($metadata_value !~ /$exp/i) {$indexed_doc = 1; last;}
|
---|
485 | } else {
|
---|
486 | if ($metadata_value !~ /$exp/) {$indexed_doc = 1; last;}
|
---|
487 | }
|
---|
488 | } else {
|
---|
489 | if ($options =~ /^i$/i) {
|
---|
490 | if ($metadata_value =~ /$exp/i) {$indexed_doc = 1; last;}
|
---|
491 | } else {
|
---|
492 | if ($metadata_value =~ /$exp/) {$indexed_doc = 1; last;}
|
---|
493 | }
|
---|
494 | }
|
---|
495 | }
|
---|
496 |
|
---|
497 | last if ($indexed_doc == 1);
|
---|
498 | }
|
---|
499 | }
|
---|
500 |
|
---|
501 | # if this doc is so far in the sub collection, and we have lang info,
|
---|
502 | # now we check the languages to see if it matches
|
---|
503 | if($indexed_doc && defined $self->{'lang_meta'}) {
|
---|
504 | $indexed_doc = 0;
|
---|
505 | my $field = $doc_obj->get_metadata_element($doc_obj->get_top_section(), $self->{'lang_meta'});
|
---|
506 | if (defined $field) {
|
---|
507 | foreach my $lang (@{$self->{'langarr'}}) {
|
---|
508 | my ($bool) = $lang =~ /^(.)/;
|
---|
509 | if ($bool eq '!') {
|
---|
510 | $lang =~ s/^.//;
|
---|
511 | if ($field !~ /$lang/) {
|
---|
512 | $indexed_doc = 1; last;
|
---|
513 | }
|
---|
514 | } else {
|
---|
515 | if ($field =~ /$lang/) {
|
---|
516 | $indexed_doc = 1; last;
|
---|
517 | }
|
---|
518 | }
|
---|
519 | }
|
---|
520 | }
|
---|
521 | }
|
---|
522 | return $indexed_doc;
|
---|
523 |
|
---|
524 | }
|
---|
525 |
|
---|
526 | # use 'Paged' if document has no more than 2 levels
|
---|
527 | # and each section at second level has a number for
|
---|
528 | # Title metadata
|
---|
529 | # also use Paged if gsdlthistype metadata is set to Paged
|
---|
530 | sub get_document_type {
|
---|
531 | my $self = shift (@_);
|
---|
532 | my ($doc_obj) = @_;
|
---|
533 |
|
---|
534 | my $thistype = "VList";
|
---|
535 | my $childtype = "VList";
|
---|
536 | my $title;
|
---|
537 | my @tmp = ();
|
---|
538 |
|
---|
539 | my $section = $doc_obj->get_top_section ();
|
---|
540 |
|
---|
541 | my $gsdlthistype = $doc_obj->get_metadata_element ($section, "gsdlthistype");
|
---|
542 | if (defined $gsdlthistype) {
|
---|
543 | if ($gsdlthistype eq "Paged") {
|
---|
544 | $childtype = "Paged";
|
---|
545 | if ($doc_obj->get_text_length ($doc_obj->get_top_section())) {
|
---|
546 | $thistype = "Paged";
|
---|
547 | } else {
|
---|
548 | $thistype = "Invisible";
|
---|
549 | }
|
---|
550 |
|
---|
551 | return ($thistype, $childtype);
|
---|
552 | } elsif ($gsdlthistype eq "Hierarchy") {
|
---|
553 | return ($thistype, $childtype); # use VList, VList
|
---|
554 | }
|
---|
555 | }
|
---|
556 | my $first = 1;
|
---|
557 | while (defined $section) {
|
---|
558 | @tmp = split /\./, $section;
|
---|
559 | if (scalar(@tmp) > 1) {
|
---|
560 | return ($thistype, $childtype);
|
---|
561 | }
|
---|
562 | if (!$first) {
|
---|
563 | $title = $doc_obj->get_metadata_element ($section, "Title");
|
---|
564 | if (!defined $title || $title !~ /^\d+$/) {
|
---|
565 | return ($thistype, $childtype);
|
---|
566 | }
|
---|
567 | }
|
---|
568 | $first = 0;
|
---|
569 | $section = $doc_obj->get_next_section($section);
|
---|
570 | }
|
---|
571 | if ($doc_obj->get_text_length ($doc_obj->get_top_section())) {
|
---|
572 | $thistype = "Paged";
|
---|
573 | } else {
|
---|
574 | $thistype = "Invisible";
|
---|
575 | }
|
---|
576 | $childtype = "Paged";
|
---|
577 | return ($thistype, $childtype);
|
---|
578 | }
|
---|
579 |
|
---|
580 | sub assoc_files {
|
---|
581 | my $self = shift (@_);
|
---|
582 | my ($doc_obj, $archivedir) = @_;
|
---|
583 | my ($afile);
|
---|
584 |
|
---|
585 | foreach my $assoc_file (@{$doc_obj->get_assoc_files()}) {
|
---|
586 | # if assoc file starts with a slash, we put it relative to the assoc
|
---|
587 | # dir, otherwise it is relative to the HASH... directory
|
---|
588 | if ($assoc_file->[1] =~ m@^[/\\]@) {
|
---|
589 | $afile = &util::filename_cat($self->{'assocdir'},$assoc_file->[1]);
|
---|
590 | } else {
|
---|
591 | $afile = &util::filename_cat($self->{'assocdir'}, $archivedir, $assoc_file->[1]);
|
---|
592 | }
|
---|
593 | &util::hard_link ($assoc_file->[0], $afile);
|
---|
594 | }
|
---|
595 | }
|
---|
596 |
|
---|