92 lines
2.0 KiB
Plaintext
92 lines
2.0 KiB
Plaintext
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#!/usr/local/bin/perl
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# To scan a Caml Light source file, find all references to external modules
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# (open Foo or Foo.bar), and output the dependencies on standard output.
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#
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# Usage: camldep [-I path] <file> ...
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while ($#ARGV >= 0) {
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$_ = shift(@ARGV);
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if (/^-I(.*)$/) {
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$dir = $1 ? $1 : shift(@ARGV);
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$dir =~ s|/$||;
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unshift(@path, $dir);
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}
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elsif (/(.*)\.mli$/ || /(.*)\.cmi$/) {
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do scan_source ($_, "$1.cmi");
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}
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elsif (/(.*)\.ml$/ || /(.*)\.cmo$/) {
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do scan_source ($_, "$1.cmo");
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}
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else {
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die "Don't know what to do with $_";
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}
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}
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sub scan_source {
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local ($source_name, $target_name) = @_;
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$modname = $target_name;
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$modname =~ s|^.*/||;
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$modname =~ s|\.z[io]$||;
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undef(%imports);
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open(SRC, $source_name) || return;
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while(<SRC>) {
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if (m/\bopen\s*([A-Z][a-zA-Z0-9_]*)\b/) {
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$imports{$1} = 1;
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}
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while(m/\b([A-Z][a-zA-Z0-9_]*)\./) {
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$imports{$1} = 1;
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$_ = $';
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}
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}
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close(SRC);
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undef(@deps);
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if ($target_name =~ m/(.*)\.cmo$/ && -r ($source_name . "i")) {
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push(@deps, "$1.cmi");
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}
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foreach $modl (keys(%imports)) {
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$modl = do lowercase($modl);
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next if ($modl eq $modname);
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if ($dep = do find_path ("$modl.mli")) {
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$dep =~ s/\.mli$/.cmi/;
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push(@deps, $dep);
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}
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elsif ($dep = do find_path ("$modl.ml")) {
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$dep =~ s/\.ml$/.cmo/;
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push(@deps, $dep);
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}
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}
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if ($#deps >= 0) {
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print "$target_name: ";
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$col = length($target_name) + 2;
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foreach $dep (@deps) {
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next if $dep eq $target_name;
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$col += length($dep) + 1;
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if ($col >= 77) {
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print "\\\n ";
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$col = length($dep) + 5;
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}
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print $dep, " ";
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}
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print "\n";
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}
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}
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sub find_path {
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local ($filename) = @_;
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return $filename if (-r $filename);
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foreach $dir (@path) {
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return "$dir/$filename" if (-r "$dir/$filename");
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}
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return 0;
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}
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sub lowercase {
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local ($_) = @_;
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m/^(.)(.*)$/;
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$hd = $1;
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$tl = $2;
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$hd =~ tr/A-Z/a-z/;
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return $hd . $tl;
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}
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