1 | ###########################################################################
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2 | #
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3 | # MACROPlug plugin - to process .dm files for language translation
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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 | package MACROPlug;
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27 |
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28 | use BasPlug;
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29 | use parsargv;
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30 |
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31 |
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32 | sub BEGIN {
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33 | @ISA = ('BasPlug');
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34 | }
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35 |
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36 | my $arguments =
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37 | [ { 'name' => "process_exp",
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38 | 'desc' => "{BasPlug.process_exp}",
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39 | 'type' => "regexp",
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40 | 'deft' => &get_default_process_exp(),
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41 | 'reqd' => "no" } ];
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42 |
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43 | my $options = { 'name' => "MACROPlug",
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44 | 'desc' => "{MACROPlug.desc}",
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45 | 'abstract' => "no",
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46 | 'inherits' => "yes",
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47 | 'args' => $arguments };
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48 |
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49 | # sub print_usage {
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50 | # print STDERR "\n usage: plugin MACROPlug [options]\n\n";
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51 | # print STDERR " options:\n";
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52 | # print STDERR " -title_sub\t Substitution expression to modify string stored as Title.\n";
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53 | # print STDERR "\t\t Used by, for example, PSPlug to remove \"Page 1\" etc from\n";
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54 | # print STDERR "\t\t text used as the title.\n";
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55 |
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56 | # print STDERR "\n";
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57 | # }
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58 |
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59 |
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60 | sub load_language_table
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61 | {
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62 | my $lang_table = {};
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63 |
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64 | my $lang_fname = util::filename_cat($ENV{'GSDLHOME'},"tmp","lang",
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65 | "package_forms","languages.log");
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66 | open (LANGFILE, "<$lang_fname")
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67 | || die ("Unable to open $lang_fname: $!\n");
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68 |
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69 | my $full_name;
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70 | my $abbr_name;
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71 |
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72 | while (defined ($full_name=<LANGFILE>)) {
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73 | chomp($full_name);
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74 |
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75 | $abbr_name = <LANGFILE>;
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76 | chomp($abbr_name);
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77 |
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78 | $lang_table->{$full_name} = $abbr_name;
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79 |
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80 | my $fourchar_name = substr($full_name,0,4);
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81 | if (!defined $lang_table->{$fourchar_name}) {
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82 | $lang_table->{$fourchar_name} = $abbr_name;
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83 | }
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84 | else {
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85 | print STDERR "Warning: Clash on four character abbreviation for language $fourchar_name\n";
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86 | }
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87 | }
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88 |
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89 | close LANGFILE;
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90 |
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91 | return $lang_table;
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92 | }
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93 |
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94 |
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95 |
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96 | sub new {
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97 | my ($class) = @_;
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98 | my $self = new BasPlug ($class, @_);
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99 |
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100 | # 14-05-02 To allow for proper inheritance of arguments - John Thompson
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101 | my $option_list = $self->{'option_list'};
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102 | push( @{$option_list}, $options );
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103 |
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104 | # $self->{'lang_abbr'} = load_language_table();
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105 |
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106 | return bless $self, $class;
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107 | }
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108 |
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109 | sub get_default_process_exp {
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110 | my $self = shift (@_);
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111 |
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112 | return q^(?i)\.dm$^;
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113 | }
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114 |
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115 |
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116 | sub read {
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117 | my $self = shift (@_);
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118 | my ($pluginfo, $base_dir, $file, $metadata, $processor, $maxdocs) = @_;
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119 |
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120 | my $outhandle = $self->{'outhandle'};
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121 |
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122 | my $lang_table = $self->{'lang_abbr'};
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123 | my $fn = $file;
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124 | $fn =~ s/.*\/(.*)\..*/$1/;
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125 | $fn =~ s/\d+$//; # remove any digits from end of filename
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126 |
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127 | my $filename = $file;
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128 | $filename = &util::filename_cat ($base_dir, $file) if $base_dir =~ /\w/;
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129 |
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130 | if ((!-d $filename) && ($file !~ m/doc.xml$/) && (!defined $lang_table->{$fn})) {
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131 | print $outhandle "MACROPlug: blocking $file\n"
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132 | if $self->{'verbosity'} > 2;
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133 | $self->{'num_blocked'} ++;
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134 | return 0;
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135 | }
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136 |
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137 | return $self->SUPER::read(@_);
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138 | }
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139 |
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140 |
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141 | # do plugin specific processing of doc_obj
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142 | sub process {
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143 | my $self = shift (@_);
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144 | my ($textref, $pluginfo, $base_dir, $file, $metadata, $doc_obj, $gli) = @_;
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145 | my $outhandle = $self->{'outhandle'};
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146 |
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147 | print STDERR "<Processing n='$file' p='MACROPlug'>\n" if ($gli);
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148 | print $outhandle "MACROPlug: processing $file\n"
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149 | if $self->{'verbosity'} > 1;
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150 |
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151 | my $thissection = $doc_obj->get_top_section();
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152 |
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153 | $self->extract_macronames (\$textref, $doc_obj, $thissection, $file);
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154 | # we need to escape the escape character, or else mg will convert into
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155 | # eg literal newlines, instead of leaving the text as '\n'
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156 |
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157 |
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158 | my ($filemeta) = $file =~ /([^\\\/]+)$/;
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159 | $doc_obj->add_utf8_metadata($thissection, "Title", &ghtml::dmsafe($filemeta));
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160 |
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161 | return 1;
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162 | }
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163 |
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164 |
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165 | sub extract_macronames {
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166 |
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167 | my $self = shift(@_);
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168 |
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169 | my ($textref, $doc_obj, $thissection, $file) = @_;
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170 | my $outhandle = $self->{'outhandle'};
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171 |
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172 | print $outhandle " extracting macronames ...\n"
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173 | if ($self->{'verbosity'}>3);
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174 |
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175 | my @textarray = split ("\n", $$$textref)
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176 | if ($self->{'verbosity'}>3);
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177 |
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178 | my $macro_text = "";
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179 | my $image_macro = "false";
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180 | my $norm_macro = "false";
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181 |
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182 | #print STDERR "FILE@@@@@ $file\n";
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183 |
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184 | #foreach my $ta (@textarray) {
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185 |
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186 | for ($k = 0; $k < scalar(@textarray); $k++) {
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187 |
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188 | $ta = $textarray[$k];
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189 |
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190 | #print STDERR "$ta\n" if ($file =~ m/port/);
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191 |
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192 | if ($ta =~ m/^package /) {
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193 | $currpackage = $ta;
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194 | chomp($currpackage);
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195 | $currpackage =~ s/^package //;
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196 | }
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197 |
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198 |
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199 | elsif ($image_macro eq "true") {
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200 | unless ($ta =~ m/\S+/) {
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201 | $image_macro = "false";
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202 |
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203 | $macro_text =~ s/\_/\\_/osg; # for dm (we have a convention of starting macros with _
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204 |
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205 | #print STDERR "$macro_text\n\n" if ($file =~ m/spanish/);
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206 |
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207 | $doc_obj->add_utf8_text($thissection, $macro_text);
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208 |
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209 | my @names = split(/\s*\#\#\s*/, $macro_text);
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210 |
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211 | my ($title) = $names[1];
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212 |
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213 | if (length($title) > 100) {
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214 | $title = substr ($title, 0, 100) . "...";
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215 | }
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216 |
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217 | $title =~ s/</\</g;
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218 | $title =~ s/>/\>/g;
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219 |
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220 | #print STDERR "$title\n" if ($file =~ m/port/);
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221 |
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222 | $doc_obj->add_utf8_metadata ($thissection, "SecTitle", $title);
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223 | $macro_text = "";
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224 | }
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225 | $ta .= "<br>";
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226 | $macro_text .= $ta;
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227 |
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228 | }
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229 |
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230 | elsif ($norm_macro eq "true") {
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231 |
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232 | $macro_text .= $ta;
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233 |
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234 | if ($ta =~ m/\}\s*(\#.*)*\Z/) {
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235 |
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236 | $norm_macro = "false";
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237 |
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238 | $macro_text =~ s/\A(_\w+_)\s//;
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239 |
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240 | #print STDERR "$macro_text\n" if($file =~ m/spanish/i);
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241 |
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242 | $doc_obj->add_utf8_text($thissection, $macro_text);
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243 |
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244 | my ($title) = $macro_text;
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245 |
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246 | $title =~ s/\_/\\_/osg;
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247 | $title =~ s/\{//;
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248 | $title =~ s/\}\s*(\#.*)*\Z//;
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249 | $title =~ s/\<br\>|\<p\>/\n/osg;
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250 | $title =~ s/\n/ /osg;
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251 | $title =~ s/</\</g;
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252 | $title =~ s/>/\>/g;
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253 |
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254 | $title =~ s/\(/\\\(/g;
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255 | $title =~ s/\)/\\\)/g;
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256 |
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257 | if (length($title) > 100) {
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258 | $title = substr ($title, 0, 100) . "...";
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259 | }
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260 | #print STDERR "$title\n\n\n" if($file =~ m/spanish/i);
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261 |
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262 | $doc_obj->add_utf8_metadata ($thissection, "SecTitle", $title);
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263 | $macro_text = "";
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264 | }
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265 |
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266 | }
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267 | elsif(($ta =~ m/\A(_\w+_)\s*/) && ($image_macro eq "false")) {
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268 |
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269 | my $new_macro = $1;
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270 |
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271 | my $new_cursection = $doc_obj->get_next_child($thissection);
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272 | $thissection = $doc_obj->insert_section("");
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273 |
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274 | $new_macro =~ s/\_/\\_/osg;
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275 |
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276 | $new_macro = $currpackage . "::" . $new_macro;
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277 |
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278 | #print STDERR "$new_macro\n" if ($file =~ m/spanish/);
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279 |
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280 | $doc_obj->add_utf8_metadata ($thissection, "Macroname", $new_macro);
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281 |
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282 | $macro_text = $ta;
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283 |
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284 | if ($ta =~ m/\}\s*(\#.*)*\Z/) {
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285 |
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286 | $macro_text =~ s/\A(_\w+_)\s//;
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287 | $macro_text =~ s/\n/ /osg;
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288 |
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289 | #print STDERR "$macro_text\n" if($file =~ m/spanish/i);
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290 |
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291 | $doc_obj->add_utf8_text($thissection, $macro_text);
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292 |
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293 | my ($title) = $macro_text;
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294 | $title =~ s/\{//;
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295 | $title =~ s/\}\s*(\#.*)*\Z//;
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296 | $title =~ s/\<br\>|\<p\>/\n/osg;
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297 | $title =~ s/\n/ /osg;
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298 | $title =~ s/</\</g;
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299 | $title =~ s/>/\>/g;
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300 |
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301 | if (length($title) > 100) {
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302 | $title = substr ($title, 0, 100) . "...";
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303 | }
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304 | #print STDERR "$title\n\n\n" if($file =~ m/spanish/i);
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305 |
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306 | $doc_obj->add_utf8_metadata ($thissection, "SecTitle", $title);
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307 | }
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308 | else {
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309 | $norm_macro = "true";
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310 | }
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311 |
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312 | $macro_text = "";
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313 | $macro_text .= $ta;
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314 | }
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315 |
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316 | #line in format ## "sometext" ## macro ## macroname ##
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317 | elsif ($ta =~ m/^\#\# .*/) {
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318 | my $macroname = $ta;
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319 | $image_macro = "true";
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320 | $macro_text = "";
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321 |
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322 | #NEED S.T LIKE THIS TO PICK UP HOARY ONES OVER 2 LINES
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323 | unless ($macroname =~ m/^\#\# .*\#\#/) {
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324 | $macroname = $ta;
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325 | chomp($macroname);
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326 | $macro_text .= $macroname;
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327 | $ta .= $textarray[++$k];
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328 | $macroname .= $ta;
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329 | }
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330 |
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331 | my @names = split(/\s*\#\#\s*/, $macroname);
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332 | $macroname = $names[(scalar @names) - 1];
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333 | my $key = $currpackage . "::" . $macroname; # key to the hash and the database
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334 |
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335 | my $new_cursection = $doc_obj->get_next_child($thissection);
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336 | $thissection = $doc_obj->insert_section("");
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337 |
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338 | #print STDERR "$key \n" if ($file =~ m/(port)|(chin)|(engl)/);
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339 |
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340 | $doc_obj->add_utf8_metadata ($thissection, "Macroname", $key);
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341 |
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342 | $macro_text = $ta . "<br>";
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343 |
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344 | }
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345 | }
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346 |
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347 | print $outhandle "done extracting macros\n"
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348 | if ($self->{'verbosity'}>3);
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349 |
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350 | }
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351 |
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352 |
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353 | sub get_language_encoding_old {
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354 | my $self = shift (@_);
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355 | my ($filename) = @_;
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356 | my $outhandle = $self->{'outhandle'};
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357 |
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358 | # read in file
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359 | open (FILE, $filename) || die "BasPlug::get_language_encoding could not open $filename for reading ($!)\n";
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360 | undef $/;
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361 | my $text = <FILE>;
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362 | $/ = "\n";
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363 | close FILE;
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364 |
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365 | # remove <title>stuff</title> -- as titles tend often to be in English
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366 | # for foreign language documents
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367 | $text =~ s/<title>.*?<\/title>//i;
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368 |
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369 | # remove all HTML tags
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370 | $text =~ s/<[^>]*>//sg;
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371 | my $results = [];
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372 |
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373 | # get the language/encoding
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374 | $results = $self->{'textcat'}->classify(\$text);
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375 |
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376 | foreach $r (@$results) {
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377 | print $outhandle "Results: $r\n";
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378 |
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379 | }
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380 |
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381 | # if textcat returns 3 or less possibilities we'll use the
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382 | # first one in the list - otherwise use the defaults
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383 | if (scalar @$results > 3) {
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384 |
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385 | my $lang_fname = util::filename_cat($ENV{'GSDLHOME'},"tmp","lang","package_forms",
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386 | "languages.log");
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387 | open (LANGFILE, "<$lang_fname") or die ("Unable to open $lang_fname: $!\n");
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388 |
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389 | while (<LANGFILE>) {
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390 |
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391 | $line = $_;
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392 | chomp($line);
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393 |
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394 | $fn = $filename;
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395 | $fn =~ s/.*\/(.*)\..*/$1/;
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396 |
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397 |
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398 | if ($line eq $fn) {
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399 | print $outhandle "BINGO $line $fn\n";
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400 | $line = <LANGFILE>;
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401 | chomp($line);
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402 | print $outhandle "language code is $line\n";
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403 |
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404 | foreach $r (@$results) {
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405 | print $outhandle "MY1 $r\n";
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406 |
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407 | $roar = $& if($r =~ m/../);
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408 |
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409 | if ($roar eq $line) {
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410 | print $outhandle "WE HAVE A WINNER $r\n";
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411 | }
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412 | }
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413 |
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414 |
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415 | }
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416 | else {
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417 | $line = <LANGFILE>;
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418 | }
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419 | }
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420 |
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421 | close LANGFILE;
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422 |
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423 | if ($self->{'input_encoding'} ne 'auto') {
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424 | if ($self->{'extract_language'} && $self->{'verbosity'}) {
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425 | print $outhandle "BasPlug: WARNING: language could not be extracted from $filename - ";
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426 | print $outhandle "defaulting to $self->{'default_language'}\n";
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427 | }
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428 | return ($self->{'default_language'}, $self->{'input_encoding'});
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429 |
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430 | } else {
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431 | if ($self->{'verbosity'}) {
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432 | print $outhandle "BASPlug: WARNING: language/encoding could not be extracted from $filename - ";
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433 | print $outhandle "defaulting to $self->{'default_language'}/$self->{'default_encoding'}\n";
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434 | }
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435 | return ($self->{'default_language'}, $self->{'default_encoding'});
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436 | }
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437 | }
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438 |
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439 |
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440 | # format language/encoding
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441 | my ($language, $encoding) = $results->[0] =~ /^([^-]*)(?:-(.*))?$/;
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442 | if (!defined $language) {
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443 | if ($self->{'verbosity'}) {
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444 | print $outhandle "BasPlug: WARNING: language could not be extracted from $filename - ";
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445 | print $outhandle "defaulting to $self->{'default_language'}\n";
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446 | }
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447 | $language = $self->{'default_language'};
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448 | }
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449 | if (!defined $encoding) {
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450 | if ($self->{'verbosity'}) {
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451 | print $outhandle "BasPlug: WARNING: encoding could not be extracted from $filename - ";
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452 | print $outhandle "defaulting to $self->{'default_encoding'}\n";
|
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453 | }
|
---|
454 | $encoding = $self->{'default_encoding'};
|
---|
455 | }
|
---|
456 |
|
---|
457 | if ($encoding !~ /^(ascii|utf8|unicode)$/ &&
|
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458 | !defined $encodings::encodings->{$encoding}) {
|
---|
459 | if ($self->{'verbosity'}) {
|
---|
460 | print $outhandle "BasPlug: WARNING: $filename appears to be encoded in an unsupported encoding ($encoding) - ";
|
---|
461 | print $outhandle "using $self->{'default_encoding'}\n";
|
---|
462 | }
|
---|
463 | $encoding = $self->{'default_encoding'};
|
---|
464 | }
|
---|
465 |
|
---|
466 | print STDERR "**** forcing encoding to be utf8\n";
|
---|
467 | $encoding = "utf8";
|
---|
468 |
|
---|
469 | print STDERR "**** forcing language to be first two letters\n";
|
---|
470 | my $lfname = $filename;
|
---|
471 | $lfname =~ s/^.*\///;
|
---|
472 | $language = substr($lfname,0,2);
|
---|
473 |
|
---|
474 | print $outhandle "RETURNING VALUES $language $encoding\n";
|
---|
475 |
|
---|
476 | return ($language, $encoding);
|
---|
477 | }
|
---|
478 |
|
---|
479 |
|
---|
480 | sub find_language {
|
---|
481 | my ($self,$fn) = @_;
|
---|
482 |
|
---|
483 | my $lang_table = $self->{'lang_abbr'};
|
---|
484 |
|
---|
485 | if (!defined $lang_table->{$fn}) {
|
---|
486 |
|
---|
487 | # try and find it with shorter string name
|
---|
488 |
|
---|
489 | my $try_len = length($fn);
|
---|
490 |
|
---|
491 | while ($try_len>=4) {
|
---|
492 | $try_fn = substr($fn,0,$try_len);
|
---|
493 |
|
---|
494 | if (defined $lang_table->{$try_fn}) {
|
---|
495 | $fn = $try_fn;
|
---|
496 | last;
|
---|
497 | }
|
---|
498 | $try_len--;
|
---|
499 | }
|
---|
500 | }
|
---|
501 |
|
---|
502 | return $fn;
|
---|
503 | }
|
---|
504 |
|
---|
505 |
|
---|
506 | sub get_language_encoding {
|
---|
507 | my $self = shift (@_);
|
---|
508 | my ($filename) = @_;
|
---|
509 | my $outhandle = $self->{'outhandle'};
|
---|
510 |
|
---|
511 | my $fn = $filename;
|
---|
512 | $fn =~ s/.*\/(.*)\..*/$1/;
|
---|
513 | $fn =~ s/\d+$//; # remove any digits from end of filename
|
---|
514 |
|
---|
515 | my $languge;
|
---|
516 | my $encoding = "utf8";
|
---|
517 |
|
---|
518 | ## my $lang_lookup = $self->find_language($fn);
|
---|
519 |
|
---|
520 | my $lang_table = $self->{'lang_abbr'};
|
---|
521 |
|
---|
522 | if (!defined $lang_table->{$fn}) {
|
---|
523 |
|
---|
524 | print $outhandle "Warning: Macro file name $filename not in list of languages.\n";
|
---|
525 | print $outhandle " Using default language.\n";
|
---|
526 | $language = $self->{'default_language'};
|
---|
527 | }
|
---|
528 | else {
|
---|
529 | $language = $lang_table->{$fn};
|
---|
530 | }
|
---|
531 |
|
---|
532 | ## print $outhandle "Storing $filename as $language $encoding\n";
|
---|
533 |
|
---|
534 | return ($language, $encoding);
|
---|
535 | }
|
---|
536 |
|
---|
537 |
|
---|
538 | 1;
|
---|