1 | ###########################################################################
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2 | #
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3 | # ExcelPlugin.pm -- plugin for importing Microsoft Excel files.
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4 | # (basic version supports versions 95 and 97)
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5 | # (through OpenOffice extension, supports all contempoary formats)
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6 | #
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7 | # A component of the Greenstone digital library software
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8 | # from the New Zealand Digital Library Project at the
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9 | # University of Waikato, New Zealand.
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10 | #
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11 | # Copyright (C) 2002 New Zealand Digital Library Project
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12 | #
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13 | # This program is free software; you can redistribute it and/or modify
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14 | # it under the terms of the GNU General Public License as published by
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15 | # the Free Software Foundation; either version 2 of the License, or
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16 | # (at your option) any later version.
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17 | #
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18 | # This program is distributed in the hope that it will be useful,
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19 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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20 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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21 | # GNU General Public License for more details.
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22 | #
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23 | # You should have received a copy of the GNU General Public License
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24 | # along with this program; if not, write to the Free Software
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25 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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26 | #
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27 | ###########################################################################
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28 |
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29 | package ExcelPlugin;
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30 |
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31 | use strict;
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32 | no strict 'refs'; # allow filehandles to be variables and viceversa
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33 | no strict 'subs';
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34 | use gsprintf 'gsprintf';
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35 |
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36 | use AutoLoadConverters;
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37 | use ConvertBinaryFile;
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38 |
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39 | sub BEGIN {
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40 | @ExcelPlugin::ISA = ('ConvertBinaryFile', 'AutoLoadConverters');
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41 | }
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42 |
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43 | my $openoffice_available = 0;
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44 |
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45 | my $arguments =
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46 | [ { 'name' => "process_exp",
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47 | 'desc' => "{BasePlugin.process_exp}",
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48 | 'type' => "regexp",
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49 | 'reqd' => "no",
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50 | 'deft' => "&get_default_process_exp()" # delayed (see below)
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51 | }
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52 | ];
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53 |
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54 | my $options = { 'name' => "ExcelPlugin",
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55 | 'desc' => "{ExcelPlugin.desc}",
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56 | 'abstract' => "no",
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57 | 'inherits' => "yes",
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58 | 'srcreplaceable' => "yes", # Source docs in Excel format can be replaced with GS-generated html
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59 | 'args' => $arguments };
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60 |
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61 | sub new {
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62 | my ($class) = shift (@_);
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63 | my ($pluginlist,$inputargs,$hashArgOptLists) = @_;
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64 | push(@$pluginlist, $class);
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65 |
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66 | # this bit needs to happen later after the arguments array has been
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67 | # finished - used for parsing the input args.
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68 | # push(@{$hashArgOptLists->{"ArgList"}},@{$arguments});
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69 | # this one needs to go in first, to get the print info in the right order
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70 | push(@{$hashArgOptLists->{"OptList"}},$options);
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71 |
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72 | my $auto_converter_self = new AutoLoadConverters($pluginlist,$inputargs,$hashArgOptLists,["OpenOfficeConverter"],1);
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73 |
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74 | if ($auto_converter_self->{'openoffice_available'}) {
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75 | $openoffice_available = 1;
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76 | }
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77 |
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78 | # evaluate the default for process_exp - it needs to be delayed till here so we know if openoffice is available or not. But needs to be done before parsing the args.
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79 | foreach my $a (@$arguments) {
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80 | if ($a->{'name'} eq "process_exp") {
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81 | my $eval_expr = $a->{'deft'};
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82 | $a->{'deft'} = eval "$eval_expr";
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83 | last;
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84 | }
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85 | }
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86 |
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87 | push(@{$hashArgOptLists->{"ArgList"}},@{$arguments});
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88 | my $cbf_self = new ConvertBinaryFile($pluginlist, $inputargs, $hashArgOptLists);
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89 | my $self = BasePlugin::merge_inheritance($auto_converter_self, $cbf_self);
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90 |
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91 |
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92 | if ($self->{'info_only'}) {
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93 | # don't worry about any options etc
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94 | return bless $self, $class;
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95 | }
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96 |
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97 | $self = bless $self, $class;
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98 | $self->{'file_type'} = "Excel";
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99 |
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100 | my $outhandle = $self->{'outhandle'};
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101 |
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102 | # check convert_to
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103 | if ($self->{'convert_to'} eq "auto") {
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104 | $self->{'convert_to'} = "html";
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105 | }
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106 |
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107 | # set convert_to_plugin and convert_to_ext
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108 | $self->set_standard_convert_settings();
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109 |
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110 | my $secondary_plugin_name = $self->{'convert_to_plugin'};
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111 | my $secondary_plugin_options = $self->{'secondary_plugin_options'};
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112 |
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113 | if (!defined $secondary_plugin_options->{$secondary_plugin_name}) {
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114 | $secondary_plugin_options->{$secondary_plugin_name} = [];
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115 | }
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116 | my $specific_options = $secondary_plugin_options->{$secondary_plugin_name};
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117 |
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118 | push(@$specific_options,"-extract_language") if $self->{'extract_language'};
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119 | push(@$specific_options, "-file_rename_method", "none");
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120 |
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121 | if ($secondary_plugin_name eq "HTMLPlugin") {
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122 | push(@$specific_options, "-processing_tmp_files");
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123 | }
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124 |
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125 | $self->load_secondary_plugins($class,$secondary_plugin_options,$hashArgOptLists);
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126 | return $self;
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127 | }
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128 |
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129 |
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130 | sub get_default_process_exp {
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131 | my $self = shift (@_);
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132 |
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133 | if ($openoffice_available) {
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134 | return q^(?i)\.(xls|xlsx|ods)$^;
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135 | }
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136 |
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137 | return q^(?i)\.xls$^;
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138 | }
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139 |
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140 | sub init {
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141 | my $self = shift (@_);
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142 |
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143 | # ConvertBinaryFile init
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144 | $self->SUPER::init(@_);
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145 | $self->AutoLoadConverters::init(@_);
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146 |
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147 | }
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148 |
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149 | sub begin {
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150 | my $self = shift (@_);
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151 |
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152 | $self->AutoLoadConverters::begin(@_);
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153 | $self->SUPER::begin(@_);
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154 |
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155 | }
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156 |
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157 | sub deinit {
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158 | my $self = shift (@_);
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159 |
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160 | $self->AutoLoadConverters::deinit(@_);
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161 | $self->SUPER::deinit(@_);
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162 |
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163 | }
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164 |
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165 | sub tmp_area_convert_file {
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166 |
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167 | my $self = shift (@_);
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168 | return $self->AutoLoadConverters::tmp_area_convert_file(@_);
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169 |
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170 | }
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171 |
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172 | sub convert_post_process_old
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173 | {
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174 | my $self = shift (@_);
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175 | my ($conv_filename) = @_;
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176 |
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177 | my $outhandle=$self->{'outhandle'};
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178 |
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179 | my ($language, $encoding) = $self->textcat_get_language_encoding ($conv_filename);
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180 |
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181 | # read in file ($text will be in utf8)
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182 | my $text = "";
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183 | $self->read_file ($conv_filename, $encoding, $language, \$text);
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184 |
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185 | # turn any high bytes that aren't valid utf-8 into utf-8.
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186 | #unicode::ensure_utf8(\$text);
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187 |
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188 | # Write it out again!
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189 | #$self->utf8_write_file (\$text, $conv_filename);
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190 | }
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191 |
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192 | 1;
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