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