forked from epics_driver_modules/require
124 lines
3.3 KiB
Perl
Executable File
124 lines
3.3 KiB
Perl
Executable File
#!/usr/bin/env perl
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use warnings;
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use strict;
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use 5.010;
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use File::Basename qw/basename/;
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use File::Spec::Functions qw/catfile/;
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my $epicsversion = 0x030E0000; # 3.14
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my $quiet = 0;
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my @searchpath = ();
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my %filesDone = ();
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my @filesInput = ();
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my $nested = 0;
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while (@ARGV) {
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my $arg = shift @ARGV;
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if ($arg =~ /^-(\d+(.\d+){0,3})$/) { $epicsversion = parseVersion($1); }
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elsif ($arg eq "-q") { $quiet = 1; }
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elsif ($arg =~ /^-I$/) { push @searchpath, shift @ARGV; }
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elsif ($arg =~ /^-I(.*)$/) { push @searchpath, $1; }
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else { push @filesInput, $arg; }
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}
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##
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## Convert version string of version.revision.modification.patch format
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## to integer format 0Xvvrrmmpp (in hexadecimal)
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## 3.14.12.8 -> 0x030E0C08
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## 7.0.3 -> 0x07000300
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## This requires all parts of version number are in range 0-255,
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## which is true for EPICS base version number.
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##
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sub parseVersion {
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my @vi = split(/\./, shift); # version integers list
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my $vh = 0; # hexadecimal version
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foreach my $i (0..$#vi) {
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$vh |= $vi[$i] << (8 * (3-$i));
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}
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return $vh;
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}
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##
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## Search given dbd file from @searchpath list.
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## If it is not found, return the file name as it is.
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##
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sub finddbd {
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my $name = shift;
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foreach my $dir (@searchpath) {
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my $fullname = catfile($dir, $name);
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if ( -f $fullname) {
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return $fullname;
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}
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}
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return $name;
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}
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##
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## Read a dbd file and dump its contents to stdout.
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## File after "include" directive is read in too.
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##
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sub scanfile {
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my $name = shift; # dbd file to read
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my $includer = shift; # dbd file and lineno where this dbd file is included.
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my $lineno = shift; # they are undef for files from command line.
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if (!$nested) {
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my $base = basename($name);
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if (exists($filesDone{$base})) {
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if (!$quiet) {
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if ($includer) {
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say STDERR "Info: skipping duplicate file $name included from $includer line $lineno";
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}
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else {
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say STDERR "Info: skipping duplicate file $name from command line";
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}
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}
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return 1;
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}
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$filesDone{$base} = 1;
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}
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my $fh;
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if (!(open $fh, "<", finddbd($name))) {
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if ($includer) {
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say STDERR "ERROR: file $name not found in path \"@searchpath\" called from $includer line $lineno";
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}
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else {
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say STDERR "ERROR: file $name not found in path \"@searchpath\"";
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}
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return 0;
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}
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foreach (my $n=1;<$fh>;$n++) {
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chomp;
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if (/^[ \t]*(#|%|$)/) {
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# skip
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}
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elsif (/include[ \t]+"?([^"]*)"?/) {
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return 0 unless scanfile($1, $name, $n);
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}
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elsif (/(registrar|variable|function)[ \t]*\([ \t]*"?([a-zA-Z0-9_]+)"?[ \t]*\)/) {
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say "$1($2)" if $epicsversion > 0x030D0000; # 3.13
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}
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elsif (/variable[ \t]*\([ \t]*"?([a-zA-Z0-9_]+)"?[ \t]*,[ \t]*"?([a-zA-Z0-9_]+)"?[ \t]*\)/) {
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say "variable($1,$2)" if $epicsversion > 0x030D0000; # 3.13
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}
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else {
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say;
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if (/\{/) { $nested++; }
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if (/\}/) { $nested--; }
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}
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}
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return 1;
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}
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foreach my $name (@filesInput) {
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exit 1 unless scanfile($name);
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}
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