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#! /usr/bin/env perl
# Get symbols exported by the PLplot library and output only those that are
# included in the public header file.
#
# Rafael Laboissiere <rafael@users.sf.net> on Sun May 23 16:24:02 CEST 2004
# This file is part of PLplot and released under the terms of the GNU GPL.
# No warranties.
my $nargin = scalar @ARGV;
die "Usage:\n $0 library.so header.h [n_columns]\n"
if ($nargin != 2 and $nargin != 3);
my ($library, $header, $columns) = @ARGV;
$columns ||= 2;
die "$0: n_columns must be >= 1"
if $columns < 1;
open (HEADER, "< $header")
or die "$0: cannot open file $header";
my @hlines = <HEADER>;
close HEADER;
my @extsym = `nm "$library"`
or die "$0: cannot get external symbols of library $library";
my @symbols = ();
my $maxlen = 0;
map {
my $s = $_;
if (grep {/$s/} @hlines) {
push (@symbols, $s);
my $len = length ($s);
$maxlen = $len
if $len > $maxlen;
}
} sort map {
chomp;
my $s = (split (" "))[2];
$s =~ s/^c_//;
$s;
} grep {/ T /} @extsym;
if ($columns == 1) {
# Simple output if one column requested
print join ("\n", @symbols);
} else {
my $nsym = scalar @symbols;
my $percol = $nsym / $columns;
$percol = int ($percol) + 1
if $percol != int ($percol);
for (my $i = 0; $i < $percol; $i++) {
for (my $j = 0; $j < $columns; $j++) {
my $k = $j * $percol + $i;
if ($k < $nsym) {
my $sym = $symbols[$k];
print $sym;
print (" " x ($maxlen - length ($sym) + 2))
if $j < $columns - 1;
}
}
print "\n";
}
}
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