3544 save-args matcher could be considerably more robust

[unleashed.git] / usr / src / tools / scripts / validate_flg.pl

#!/usr/bin/perl
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#

# Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
# Use is subject to license terms.
#

use strict;
use File::Find ();
require v5.8.4;

use vars qw/$f_flg *name *dir @execlist $basedir @opt_e @exclude/;
*name   = *File::Find::name;
*dir    = *File::Find::dir;

# Use the same mechanism as def.dir.flp to determine if there are any
# SCCS files matching the pattern supplied for a "find_files"
# statement.
sub sccs_empty {
    my ($pat, $dir) = @_;
    return 0 if $f_flg;
    my $foo = `find $dir -name "$pat" -print | grep /SCCS/s.`;
    $foo eq "";
}

# Not pretty, but simple enough to work for the known cases.
# Does not bother with curly braces or fancy substitutions.
# Returns undef if this pattern is excluded.
sub expand {
    my ($str) = @_;
    while ($str =~ /\$(\w+)/) {
        my $newstr = $ENV{$1};
        $str =~ s/\$$1/$newstr/g;
    }
    foreach my $pat (@exclude) {
        return undef if $str =~ /$pat/;
    }
    $str;
}

# Process a single inc.flg or req.flg file.
sub process_file {
    my ($fname, $incpath) = @_;
    my ($dname, $isincflg);
    my ($expfile, $newpath, $line, $cont, $firstline, $text);

    $dname = $fname;
    $dname =~ s+/[^/]*$++;

    $isincflg = $fname =~ /inc.flg$/;

    if (defined $incpath) {
        $newpath = "$incpath, from $fname:";
    } else {
        $newpath = "from $fname:";
    }

    if (open INC, "<$fname") {
        $line = 0;
        $cont = 0;
        while (<INC>) {
            chomp;
            $line++;
            ( $cont = 0, next ) if /^\s*#/ || /^\s*$/;
            if ($cont) {
                $text = $text . $_;
            } else {
                $firstline = $line;
                $text = $_;
            }
            if (/\\$/) {
                $cont = 1;
                $text =~ s/\\$//;
                next;
            }
            $cont = 0;
            if ($text =~ /\s*echo_file\s+(\S+)/) {
                next if !defined($expfile = expand($1));
                warn "$fname:$firstline: $1 isn't a file\n" if ! -f $expfile;
            } elsif ($text =~ /\s*find_files\s+['"]([^'"]+)['"]\s+(.*)/) {
                foreach my $dir (split(/\s+/, "$2")) {
                    next if !defined($expfile = expand($dir));
                    if (! -d $expfile) {
                        warn "$fname:$firstline: $dir isn't a directory\n";
                    } elsif ($isincflg && $expfile eq $dname) {
                        warn "$fname:$firstline: $dir is unnecessary\n";
                    } elsif (sccs_empty($1, $expfile)) {
                        warn "$fname:$firstline: $dir has no SCCS objects ",
                                "with '$1'\n";
                    }
                }
            } elsif ($text =~ /\s*exec_file\s+(\S+)/) {
                next if !defined($expfile = expand($1));
                if (-f $expfile) {
                    push @execlist, $expfile, "$newpath:$firstline";
                } else {
                    warn "$fname:$firstline: $1 isn't a file\n";
                    warn "included $incpath\n" if defined $incpath;
                }
            } else {
                warn "$0: $fname:$firstline: unknown entry: $text\n";
                warn "included $incpath\n" if defined $incpath;
            }
        }
        close INC;
    } else {
        warn "$0: $fname: $!\n";
    }
}

sub wanted {
    process_file($_, undef) if /\/(inc|req)\.flg$/ && -f $_;
}

sub next_arg {
    my ($arg) = @_;
    if ($arg eq "") {
        die "$0: missing argument for $_\n" if $#ARGV == -1;
        $arg = shift @ARGV;
    }
    $arg;
}

# I'd like to use Perl's getopts here, but it doesn't handle repeated
# options, and using comma separators is just too ugly.
# This doesn't handle combined options (as in '-rm'), but I don't care.
my $arg;
while ($#ARGV >= 0) {
    $_ = $ARGV[0];
    last if /^[^-]/;
    shift @ARGV;
    last if /^--$/;
    SWITCH: {
          /^-f/ && do { $f_flg = 1; last SWITCH; };
          if (/^-e(.*)$/) {
              $arg = next_arg($1);
              push @opt_e, $arg;
              last SWITCH;
          }
          print "$0: unknown option $_\n";
          usage();
    }
}

# compile the 'exclude' regexps
@exclude = map qr/$_/x, @opt_e;

$basedir = "usr";
if ($#ARGV == 0) {
    $basedir = shift @ARGV;
} elsif ($#ARGV > 0) {
    die "$0: unexpected arguments\n";
}

die "$0: \$CODEMGR_WS must be set\n" if $ENV{CODEMGR_WS} eq "";
chdir $ENV{CODEMGR_WS} or die "$0: chdir $ENV{CODEMGR_WS}: $!\n";

File::Find::find({wanted => \&wanted, no_chdir => 1}, $basedir);

# After passing through the tree, process all of the included files.
# There aren't many of these, so don't bother trying to optimize the
# traversal.  Just do them all.
while (@execlist) {
    my $file = shift @execlist;
    my $incpath = shift @execlist;
    process_file($file, $incpath);
}

exit 0;