1 | ###########################################################################
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2 | #
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3 | # ConvertToRogPlug.pm -- plugin that inherits from RogPlug
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4 | #
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5 | # A component of the Greenstone digital library software
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6 | # from the New Zealand Digital Library Project at the
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7 | # University of Waikato, New Zealand.
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8 | #
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9 | # Copyright (C) 1999 New Zealand Digital Library Project
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10 | #
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11 | # This program is free software; you can redistribute it and/or modify
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12 | # it under the terms of the GNU General Public License as published by
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13 | # the Free Software Foundation; either version 2 of the License, or
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14 | # (at your option) any later version.
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15 | #
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16 | # This program is distributed in the hope that it will be useful,
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17 | # but WITHOUT ANY WARRANTY; without even the implied warranty of
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18 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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19 | # GNU General Public License for more details.
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20 | #
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21 | # You should have received a copy of the GNU General Public License
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22 | # along with this program; if not, write to the Free Software
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23 | # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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24 | #
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25 | ###########################################################################
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26 |
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27 |
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28 | package ConvertToRogPlug;
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29 |
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30 | use BasPlug;
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31 | use RogPlug;
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32 | use strict;
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33 | no strict 'refs'; # allow filehandles to be variables and viceversa
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34 |
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35 | sub BEGIN {
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36 | @ConvertToRogPlug::ISA = ('RogPlug');
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37 | }
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38 |
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39 | my $arguments = [
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40 | ];
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41 | my $options = { 'name' => "ConvertToRogPlug",
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42 | 'desc' => "{ConvertToRogPlug.desc}",
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43 | 'abstract' => "yes",
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44 | 'inherits' => "yes" };
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45 |
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46 | sub new {
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47 | my ($class) = shift (@_);
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48 | my ($pluginlist,$inputargs,$hashArgOptLists) = @_;
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49 | push(@$pluginlist, $class);
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50 |
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51 | if(defined $arguments){ push(@{$hashArgOptLists->{"ArgList"}},@{$arguments});}
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52 | if(defined $options) { push(@{$hashArgOptLists->{"OptList"}},$options)};
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53 |
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54 | my $self = new RogPlug($pluginlist, $inputargs, $hashArgOptLists);
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55 |
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56 | $self->{'convert_to'} = "Rog";
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57 | $self->{'convert_to_ext'} = "rog";
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58 |
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59 | return bless $self, $class;
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60 | }
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61 |
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62 |
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63 | sub begin {
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64 | my $self = shift (@_);
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65 |
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66 | $self->SUPER::begin(@_);
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67 |
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68 | $self->{'docnum'} = 0;
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69 | }
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70 |
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71 | sub end {
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72 | my ($self) = @_;
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73 |
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74 | # nothing to do, but keep symmetric with begin function
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75 | $self->SUPER::end(@_);
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76 | }
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77 |
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78 |
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79 | # Run conversion utility on the input file.
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80 | #
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81 | # The conversion takes place in a collection specific 'tmp' directory so
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82 | # that we don't accidentally damage the input.
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83 | #
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84 | # The desired output type is indicated by $output_ext. This is usually
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85 | # something like "html" or "word", but can be "best" (or the empty string)
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86 | # to indicate that the conversion utility should do the best it can.
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87 |
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88 | sub tmp_area_convert_file {
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89 | my $self = shift (@_);
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90 | my ($output_ext, $input_filename, $textref) = @_;
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91 |
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92 | my $outhandle = $self->{'outhandle'};
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93 | my $convert_to = $self->{'convert_to'};
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94 | my $failhandle = $self->{'failhandle'};
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95 |
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96 | # softlink to collection tmp dir
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97 | my $tmp_dirname
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98 | = &util::filename_cat($ENV{'GSDLCOLLECTDIR'}, "tmp");
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99 | &util::mk_dir($tmp_dirname) if (!-e $tmp_dirname);
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100 |
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101 | # derive tmp filename from input filename
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102 | my ($tailname, $dirname, $suffix)
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103 | = &File::Basename::fileparse($input_filename, "\\.[^\\.]+\$");
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104 |
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105 | # Remove any white space from filename -- no risk of name collision, and
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106 | # makes later conversion by utils simpler. Leave spaces in path...
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107 | $tailname =~ s/\s+//g;
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108 |
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109 | my $tmp_filename = &util::filename_cat($tmp_dirname, "$tailname$suffix");
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110 |
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111 | &util::soft_link($input_filename, $tmp_filename);
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112 |
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113 | my $verbosity = $self->{'verbosity'};
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114 | if ($verbosity > 0) {
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115 | print $outhandle "Converting $tailname$suffix to $convert_to format\n";
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116 | }
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117 |
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118 | my $errlog = &util::filename_cat($tmp_dirname, "err.log");
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119 |
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120 | # Execute the conversion command and get the type of the result,
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121 | # making sure the converter gives us the appropriate output type
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122 | my $output_type = lc($convert_to);
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123 | my $cmd = "perl -S gsMusicConvert.pl -verbose $verbosity -errlog \"$errlog\" -output $output_type \"$tmp_filename\"";
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124 | $output_type = `$cmd`;
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125 |
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126 | # remove symbolic link to original file
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127 | &util::rm($tmp_filename);
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128 |
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129 | # Check STDERR here
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130 | chomp $output_type;
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131 | if ($output_type eq "fail") {
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132 | print $outhandle "Could not convert $tailname$suffix to $convert_to format\n";
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133 | print $failhandle "$tailname$suffix: " . ref($self) . " failed to convert to $convert_to\n";
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134 | $self->{'num_not_processed'} ++;
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135 | if (-s "$errlog") {
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136 | open(ERRLOG, "$errlog");
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137 | while (<ERRLOG>) {
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138 | print $outhandle "$_";
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139 | }
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140 | print $outhandle "\n";
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141 | close ERRLOG;
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142 | }
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143 | &util::rm("$errlog") if (-e "$errlog");
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144 | return "";
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145 | }
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146 |
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147 | # store the *actual* output type and return the output filename
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148 | # it's possible we requested conversion to html, but only to text succeeded
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149 |
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150 | $self->{'convert_to_ext'} = $output_type;
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151 | $self->{'converted_to'} = "Rog";
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152 |
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153 | my $output_filename = $tmp_filename;
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154 |
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155 | $output_filename =~ s/$suffix$//;
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156 |
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157 | return $output_filename;
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158 | }
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159 |
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160 |
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161 | # Remove collection specific tmp directory and all its contents.
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162 |
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163 | sub cleanup_tmp_area {
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164 | my $self = shift (@_);
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165 |
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166 | my $tmp_dirname
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167 | = &util::filename_cat($ENV{'GSDLCOLLECTDIR'}, "tmp");
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168 | &util::rm_r($tmp_dirname);
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169 | &util::mk_dir($tmp_dirname);
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170 | }
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171 |
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172 |
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173 | # Exact copy of read_rog_record from RogPlug
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174 | # Needed for FILE in right scope
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175 |
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176 | sub read_rog_record
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177 | {
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178 | my ($self,$file_buffer, $docnum, $seclevel) = @_;
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179 |
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180 | my $next_line = $file_buffer->{'next_line'};
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181 |
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182 | return 0 if (!defined $next_line);
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183 |
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184 | if ($next_line eq "")
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185 | {
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186 | my $line;
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187 | while(defined($line=<FILE>))
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188 | {
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189 | $line =~ s/\r$//;
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190 | $file_buffer->{'line_no'}++;
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191 | next if ($line =~ m/^\#/);
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192 | $next_line = $line;
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193 | last;
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194 | }
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195 | }
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196 |
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197 | if ($next_line !~ m/^song( +)\"([^\"]*)\"( +)\"([^\"]*)\"( +)(\d+)( *)$/)
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198 | {
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199 | print STDERR "Error: Malformed Rog file: $next_line";
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200 | return 0;
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201 | }
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202 | else
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203 | {
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204 | # init default values
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205 | $file_buffer->{'song'}->{'tempo'} = 120;
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206 | $file_buffer->{'song'}->{'ks_type'} = 0;
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207 | $file_buffer->{'song'}->{'ks_num'} = 0;
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208 | $file_buffer->{'song'}->{'metadata'} = [];
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209 | $file_buffer->{'song'}->{'content'} = "";
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210 |
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211 | $file_buffer->{'song'}->{'subcol'} = $2;
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212 | $file_buffer->{'song'}->{'title'} = $4;
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213 | $file_buffer->{'song'}->{'tval'} = $6;
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214 |
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215 | chomp($next_line);
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216 | my $content = $next_line;
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217 | if (defined $docnum)
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218 | {
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219 | $content.= " $docnum $seclevel";
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220 | }
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221 | $content .= "\n";
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222 |
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223 | $file_buffer->{'song'}->{'content'} = $content;
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224 |
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225 |
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226 | my $line;
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227 | while(defined($line=<FILE>))
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228 | {
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229 | $line =~ s/\r$//;
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230 |
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231 | $file_buffer->{'line_no'}++;
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232 | next if ($line =~ m/^\#/);
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233 |
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234 | if ($line =~ m/^song/)
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235 | {
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236 | $file_buffer->{'next_line'} = $line;
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237 | return 1;
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238 | }
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239 | elsif ($line =~ m/^tempo( +)(\d+)( *)$/)
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240 | {
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241 | $file_buffer->{'song'}->{'tempo'} = $2;
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242 | $file_buffer->{'song'}->{'content'} .= $line;
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243 | }
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244 | elsif ($line =~ m/^keysig( +)(\d+)( +)(\d+)( *)$/)
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245 | {
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246 | $file_buffer->{'song'}->{'ks_type'} = $2;
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247 | $file_buffer->{'song'}->{'ks_num'} = $4;
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248 | $file_buffer->{'song'}->{'content'} .= $line;
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249 | }
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250 | elsif ($line =~ m/^timesig( +)(\d+)( +)(\d+)( *)$/)
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251 | {
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252 | $file_buffer->{'song'}->{'ts_numer'} = $2;
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253 | $file_buffer->{'song'}->{'ts_denom'} = $4;
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254 | $file_buffer->{'song'}->{'content'} .= $line;
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255 | }
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256 | elsif ($line =~ m/^metadata ([^:]*): (.*)/)
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257 | {
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258 | push(@{$file_buffer->{'song'}->{'metadata'}},[$1,$2]);
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259 | $file_buffer->{'song'}->{'content'} .= $line;
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260 | }
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261 | else
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262 | {
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263 | $file_buffer->{'song'}->{'content'} .= $line;
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264 | }
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265 | }
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266 |
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267 | $file_buffer->{'next_line'} = undef;
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268 | }
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269 |
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270 | return 1;
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271 | }
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272 |
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273 | # Override RogPlug function so rog files are stored as sections (not docs)
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274 |
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275 | sub process_rog_record
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276 | {
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277 | my ($self,$doc_obj,$cursection,$song) = @_;
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278 |
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279 | $cursection =
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280 | $doc_obj->insert_section($cursection);
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281 | $self->{'docnum'}++;
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282 |
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283 | my $title = $song->{'title'};
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284 | my $title_safe = $title;
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285 | $title_safe =~ s/\'/\\\\'/g;
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286 |
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287 | # add metadata
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288 | $doc_obj->add_metadata($cursection, "Tempo", $song->{'tempo'});
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289 | $doc_obj->add_metadata($cursection, "KeySigType", $song->{'ks_type'});
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290 | $doc_obj->add_metadata($cursection, "KeySigNum", $song->{'ks_num'});
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291 | $doc_obj->add_metadata($cursection, "SubCollection", $song->{'subcol'});
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292 | $doc_obj->add_metadata($cursection, "Title", $title);
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293 | $doc_obj->add_metadata($cursection, "TitleSafe", $title_safe);
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294 | $doc_obj->add_metadata($cursection, "TVal", $song->{'tval'});
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295 |
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296 | foreach my $md ( @{$song->{'metadata'}} )
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297 | {
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298 | $doc_obj->add_metadata($cursection, $md->[0], $md->[1]);
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299 | }
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300 |
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301 | # add contents as text
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302 | $doc_obj->add_text($cursection,$song->{'content'});
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303 |
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304 | return $cursection;
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305 | }
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306 |
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307 |
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308 |
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309 | # Override BasPlug read
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310 | # We don't want to get language encoding stuff until after we've converted
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311 | # our file to Rog format
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312 | sub read {
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313 | my $self = shift (@_);
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314 | my ($pluginfo, $base_dir, $file, $metadata, $processor, $maxdocs, $total_count, $gli) = @_;
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315 |
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316 | my $outhandle = $self->{'outhandle'};
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317 |
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318 | # check process_exp, block_exp, associate_ext etc
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319 | my ($block_status,$filename) = $self->read_block(@_);
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320 | return $block_status if ((!defined $block_status) || ($block_status==0));
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321 |
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322 | $file =~ s/^[\/\\]+//; # $file often begins with / so we'll tidy it up
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323 |
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324 | # read in file ($text will be in utf8)
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325 | my $text = "";
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326 |
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327 | my $output_ext = $self->{'convert_to_ext'};
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328 | my $conv_filename = $self->tmp_area_convert_file($output_ext, $filename);
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329 |
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330 | if ("$conv_filename" eq "") {return 0;} # allows continue on errors
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331 | $self->{'conv_filename'} = $conv_filename;
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332 |
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333 |
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334 | # create a new document
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335 | #my $doc_obj = new doc ($conv_filename, "indexed_doc");
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336 | # the original filename is used now
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337 | my $doc_obj = new doc ($filename, "indexed_doc");
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338 | # the converted filename is set separately
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339 | $doc_obj->set_converted_filename($conv_filename);
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340 |
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341 | my $topsection = $doc_obj->get_top_section();
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342 | my $cursection = $topsection;
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343 |
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344 | $self->{'docnum'}++;
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345 | my $docnum = $self->{'docnum'};
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346 |
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347 | $doc_obj->set_OIDtype ($processor->{'OIDtype'}, $processor->{'OIDmetadata'});
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348 | my ($filemeta) = $file =~ /([^\\\/]+)$/;
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349 | $doc_obj->add_utf8_metadata($doc_obj->get_top_section(), "Source", &ghtml::dmsafe($filemeta));
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350 | if ($self->{'cover_image'}) {
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351 | $self->associate_cover_image($doc_obj, $filename);
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352 | }
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353 | $doc_obj->add_utf8_metadata($doc_obj->get_top_section(), "Plugin", "$self->{'plugin_type'}");
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354 | $doc_obj->add_utf8_metadata($doc_obj->get_top_section(), "FileSize", (-s $filename));
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355 |
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356 | my $track_no = "1";
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357 | my $rog_filename = "$conv_filename$track_no.$output_ext";
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358 | while (1)
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359 | {
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360 | last unless open (FILE, $rog_filename) ;
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361 |
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362 | my $file_buffer = { line_no => 0, next_line => "", song => {} };
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363 |
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364 | while ($self->read_rog_record($file_buffer, $docnum, $track_no))
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365 | {
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366 | my $song = $file_buffer->{'song'};
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367 | my $content = $song->{'content'};
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368 | $content =~ s/^song\w+(.*)$/song $1 X.$track_no/;
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369 |
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370 | $cursection
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371 | = $self->process_rog_record($doc_obj,$cursection,
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372 | $file_buffer->{'song'});
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373 | }
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374 |
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375 | close FILE;
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376 |
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377 | $track_no++;
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378 | $rog_filename = "$conv_filename$track_no.$output_ext";
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379 | }
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380 |
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381 | print STDERR "\n";
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382 |
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383 | # include any metadata passed in from previous plugins
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384 | # note that this metadata is associated with the top level section
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385 | $self->extra_metadata ($doc_obj, $doc_obj->get_top_section(), $metadata);
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386 | # do plugin specific processing of doc_obj
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387 | unless (defined ($self->process(\$text, $pluginfo, $base_dir, $file, $metadata, $doc_obj))) {
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388 | print STDERR "<ProcessingError n='$file'>\n" if ($gli);
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389 | return -1;
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390 | }
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391 | # do any automatic metadata extraction
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392 | $self->auto_extract_metadata ($doc_obj);
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393 | # add an OID
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394 | $doc_obj->set_OID();
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395 |
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396 | my $oid = $doc_obj->get_OID();
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397 | my $appletlink = "<a href=\"javascript:meldexout(\'$oid\','[TitleSafe]')\">";
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398 |
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399 | $doc_obj->add_utf8_metadata ($topsection, "audiolink", $appletlink);
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400 | $doc_obj->add_utf8_metadata ($topsection, "audioicon", "_iconaudio_");
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401 | $doc_obj->add_utf8_metadata ($topsection, "/audiolink", "</a>");
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402 |
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403 | # if no title metadata defined, set it to filename minus extension
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404 | my $existing_title = $doc_obj->get_metadata_element($topsection,"Title");
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405 | if (!defined $existing_title)
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406 | {
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407 | my $title = $doc_obj->get_metadata_element($topsection,"Source");
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408 | $title =~ s/\..*?$//g;
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409 | $doc_obj->add_utf8_metadata ($topsection, "Title", $title);
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410 |
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411 | my $title_safe = $title;
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412 | $title_safe =~ s/\'/\\\\'/g;
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413 | $doc_obj->add_utf8_metadata ($topsection, "TitleSafe", $title_safe);
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414 | }
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415 |
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416 | # process the document
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417 | $processor->process($doc_obj);
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418 | $self->cleanup_tmp_area();
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419 |
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420 | $self->{'num_processed'} ++;
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421 |
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422 | return 1;
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423 | }
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424 |
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425 |
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426 | # do plugin specific processing of doc_obj for HTML type
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427 | sub process_type {
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428 | my $self = shift (@_);
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429 | my ($doc_ext, $textref, $pluginfo, $base_dir, $file, $metadata, $doc_obj) = @_;
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430 |
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431 | my $conv_filename = $self->{'conv_filename'};
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432 | my $tmp_dirname = File::Basename::dirname($conv_filename);
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433 | my $tmp_tailname = File::Basename::basename($conv_filename);
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434 |
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435 | my $converted_to = $self->{'converted_to'};
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436 | my $ret_val = 1;
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437 |
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438 | # $ret_val = &RogPlug::process($self, $textref, $pluginfo,
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439 | # $tmp_dirname, $tmp_tailname,
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440 | # $metadata, $doc_obj);
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441 |
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442 | # associate original file with doc object
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443 | my $cursection = $doc_obj->get_top_section();
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444 | my $filename = &util::filename_cat($base_dir, $file);
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445 | $doc_obj->associate_file($filename, "doc.$doc_ext", undef, $cursection);
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446 |
|
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447 | my $doclink = "<a href=\"_httpprefix_/collect/[collection]/index/assoc/[archivedir]/doc.$doc_ext\">";
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448 | $doc_obj->add_utf8_metadata ($cursection, "srclink", $doclink);
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449 | $doc_obj->add_utf8_metadata ($cursection, "srcicon", "_icon".$doc_ext."_");
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450 | $doc_obj->add_utf8_metadata ($cursection, "/srclink", "</a>");
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451 | return $ret_val;
|
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452 | }
|
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453 |
|
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454 | 1;
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