1 | #!/usr/bin/perl -- # -*- Perl -*- |
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2 | |
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3 | # this needs some cleanup... |
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4 | |
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5 | my $PSTOTEXT = "pstotext"; |
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6 | |
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7 | my $pdf = shift @ARGV; |
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8 | |
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9 | my $index = ""; |
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10 | my $inindex = 0; |
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11 | open (F, "$PSTOTEXT $pdf |"); |
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12 | while (<F>) { |
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13 | if (/^<\/index/) { |
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14 | $index .= $_; |
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15 | $inindex = 0; |
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16 | } |
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17 | $inindex = 1 if /^<index/; |
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18 | |
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19 | if ($inindex) { |
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20 | $index .= $_ if /^\s*</; |
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21 | } |
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22 | } |
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23 | |
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24 | my $cindex = ""; |
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25 | while ($index =~ /^(.*?)((<phrase role=\"pageno\">.*?<\/phrase>\s*)+)/s) { |
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26 | $cindex .= $1; |
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27 | $_ = $2; |
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28 | $index = $'; # ' |
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29 | |
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30 | my @pages = m/<phrase role=\"pageno\">.*?<\/phrase>\s*/sg; |
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31 | |
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32 | # Expand ranges |
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33 | if ($#pages >= 0) { |
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34 | my @mpages = (); |
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35 | foreach my $page (@pages) { |
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36 | my $pageno = &pageno($page); |
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37 | if ($pageno =~ /^([0-9]+)[^0-9]([0-9]+)$/) { # funky - |
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38 | for (my $count = $1; $count <= $2; $count++) { |
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39 | push (@mpages, "<phrase role=\"$pageno\">$count</phrase>"); |
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40 | } |
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41 | } else { |
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42 | push (@mpages, $page); |
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43 | } |
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44 | } |
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45 | @pages = sort rangesort @mpages; |
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46 | } |
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47 | |
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48 | # Remove duplicates... |
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49 | if ($#pages > 0) { |
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50 | my @mpages = (); |
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51 | my $current = ""; |
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52 | foreach my $page (@pages) { |
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53 | my $pageno = &pageno($page); |
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54 | if ($pageno ne $current) { |
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55 | push (@mpages, $page); |
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56 | $current = $pageno; |
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57 | } |
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58 | } |
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59 | @pages = @mpages; |
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60 | } |
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61 | |
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62 | # Collapse ranges... |
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63 | if ($#pages > 1) { |
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64 | my @cpages = (); |
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65 | while (@pages) { |
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66 | my $count = 0; |
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67 | my $len = &rangelen($count, @pages); |
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68 | if ($len <= 2) { |
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69 | my $page = shift @pages; |
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70 | push (@cpages, $page); |
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71 | } else { |
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72 | my $fpage = shift @pages; |
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73 | my $lpage = ""; |
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74 | while ($len > 1) { |
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75 | $lpage = shift @pages; |
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76 | $len--; |
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77 | } |
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78 | my $fpno = &pageno($fpage); |
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79 | my $lpno = &pageno($lpage); |
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80 | $fpage =~ s/>$fpno</>${fpno}-$lpno</s; |
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81 | push (@cpages, $fpage); |
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82 | } |
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83 | } |
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84 | @pages = @cpages; |
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85 | } |
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86 | |
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87 | my $page = shift @pages; |
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88 | $page =~ s/\s*$//s; |
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89 | $cindex .= $page; |
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90 | while (@pages) { |
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91 | $page = shift @pages; |
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92 | $page =~ s/\s*$//s; |
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93 | $cindex .= ", $page"; |
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94 | } |
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95 | } |
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96 | $cindex .= $index; |
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97 | |
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98 | print "$cindex\n"; |
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99 | |
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100 | sub pageno { |
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101 | my $page = shift; |
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102 | |
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103 | $page =~ s/^<phrase.*?>//; |
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104 | $page =~ s/^<link.*?>//; |
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105 | |
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106 | return $1 if $page =~ /^([^<>]+)/; |
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107 | return "?"; |
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108 | } |
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109 | |
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110 | sub rangesort { |
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111 | my $apno = &pageno($a); |
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112 | my $bpno = &pageno($b); |
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113 | |
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114 | # Make sure roman pages come before arabic ones, otherwise sort them in order |
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115 | return -1 if ($apno !~ /^\d+/ && $bpno =~ /^\d+/); |
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116 | return 1 if ($apno =~ /^\d+/ && $bpno !~ /^\d+/); |
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117 | return $apno <=> $bpno; |
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118 | } |
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119 | |
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120 | sub rangelen { |
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121 | my $count = shift; |
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122 | my @pages = @_; |
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123 | my $len = 1; |
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124 | my $inrange = 1; |
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125 | |
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126 | my $current = &pageno($pages[$count]); |
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127 | while ($count < $#pages && $inrange) { |
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128 | $count++; |
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129 | my $next = &pageno($pages[$count]); |
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130 | if ($current + 1 eq $next) { |
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131 | $current = $next; |
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132 | $inrange = 1; |
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133 | $len++; |
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134 | } else { |
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135 | $inrange = 0; |
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136 | } |
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137 | } |
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138 | |
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139 | return $len; |
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140 | } |
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