Make it possible to pass perl code to autoscript.

[debhelper.git] / Debian / Debhelper / Dh_Lib.pm

diff --git a/Debian/Debhelper/Dh_Lib.pm b/Debian/Debhelper/Dh_Lib.pm
index 40c33e84722606c64b8afa293f3f65e2271cbaa1..7b550b0ea5752820d98d1a84d49b5255c3aeeedc 100644 (file)
--- a/Debian/Debhelper/Dh_Lib.pm
+++ b/Debian/Debhelper/Dh_Lib.pm
@@ -18,9 +18,9 @@ use vars qw(@ISA @EXPORT %dh);
            &inhibit_log &load_log &write_log &commit_override_log
            &dpkg_architecture_value &sourcepackage
            &is_make_jobserver_unavailable &clean_jobserver_makeflags
-           &cross_command &set_buildflags);
+           &cross_command &set_buildflags &get_buildoption);
 
-my $max_compat=9;
+my $max_compat=10;
 
 sub init {
        my %params=@_;
@@ -328,29 +328,35 @@ sub dirname {
 
        sub compat {
                my $num=shift;
+               my $nowarn=shift;
        
                if (! defined $c) {
                        $c=1;
-                       if (defined $ENV{DH_COMPAT}) {
-                               $c=$ENV{DH_COMPAT};
-                       }
-                       elsif (-e 'debian/compat') {
-                               # Try the file..
+                       if (-e 'debian/compat') {
                                open (COMPAT_IN, "debian/compat") || error "debian/compat: $!";
                                my $l=<COMPAT_IN>;
                                close COMPAT_IN;
                                if (! defined $l || ! length $l) {
-                                       warning("debian/compat is empty, assuming level $c");
+                                       warning("debian/compat is empty, assuming level $c")
+                                               unless defined $ENV{DH_COMPAT};
                                }
                                else {
                                        chomp $l;
                                        $c=$l;
                                }
                        }
+                       else {
+                               warning("No compatibility level specified in debian/compat");
+                               warning("This package will soon FTBFS; time to fix it!");
+                       }
+
+                       if (defined $ENV{DH_COMPAT}) {
+                               $c=$ENV{DH_COMPAT};
+                       }
                }
 
-               if ($c <= 4 && ! $warned_compat) {
-                       warning("Compatibility levels before 5 are deprecated.");
+               if ($c <= 4 && ! $warned_compat && ! $nowarn) {
+                       warning("Compatibility levels before 5 are deprecated (level $c in use)");
                        $warned_compat=1;
                }
        
@@ -498,7 +504,8 @@ sub pkgfilename {
 # 1: package
 # 2: script to add to
 # 3: filename of snippet
-# 4: sed to run on the snippet. Ie, s/#PACKAGE#/$PACKAGE/
+# 4: either text: shell-quoted sed to run on the snippet. Ie, 's/#PACKAGE#/$PACKAGE/'
+#    or a sub to run on each line of the snippet. Ie sub { s/#PACKAGE#/$PACKAGE/ }
 sub autoscript {
        my $package=shift;
        my $script=shift;
@@ -527,18 +534,34 @@ sub autoscript {
           && !compat(5)) {
                # Add fragments to top so they run in reverse order when removing.
                complex_doit("echo \"# Automatically added by ".basename($0)."\"> $outfile.new");
-               complex_doit("sed \"$sed\" $infile >> $outfile.new");
+               autoscript_sed($sed, $infile, "$outfile.new");
                complex_doit("echo '# End automatically added section' >> $outfile.new");
                complex_doit("cat $outfile >> $outfile.new");
                complex_doit("mv $outfile.new $outfile");
        }
        else {
                complex_doit("echo \"# Automatically added by ".basename($0)."\">> $outfile");
-               complex_doit("sed \"$sed\" $infile >> $outfile");
+               autoscript_sed($sed, $infile, $outfile);
                complex_doit("echo '# End automatically added section' >> $outfile");
        }
 }
 
+sub autoscript_sed {
+       my $sed = shift;
+       my $infile = shift;
+       my $outfile = shift;
+       if (ref($sed) eq 'CODE') {
+               open(IN, $infile) or die "$infile: $!";
+               open(OUT, ">>$outfile") or die "$outfile: $!";
+               while (<IN>) { $sed->(); print OUT }
+               close(OUT) or die "$outfile: $!";
+               close(IN) or die "$infile: $!";
+       }
+       else {
+               complex_doit("sed \"$sed\" $infile >> $outfile");
+       }
+}
+
 # Removes a whole substvar line.
 sub delsubstvar {
        my $package=shift;
@@ -612,12 +635,22 @@ sub filedoublearray {
        my $file=shift;
        my $globdir=shift;
 
+       # executable config files are a v9 thing.
+       my $x=! compat(8) && -x $file;
+       if ($x) {
+               require Cwd;
+               my $cmd=Cwd::abs_path($file);
+               open (DH_FARRAY_IN, "$cmd |") || error("cannot run $file: $!");
+       }
+       else {
+               open (DH_FARRAY_IN, $file) || error("cannot read $file: $!");
+       }
+
        my @ret;
-       open (DH_FARRAY_IN, $file) || error("cannot read $file: $!");
        while (<DH_FARRAY_IN>) {
                chomp;
                # Only ignore comments and empty lines in v5 mode.
-               if (! compat(4)) {
+               if (! compat(4) && ! $x)  {
                        next if /^#/ || /^$/;
                }
                my @line;
@@ -626,7 +659,7 @@ sub filedoublearray {
                # The tricky bit is that the glob expansion is done
                # as if we were in the specified directory, so the
                # filenames that come out are relative to it.
-               if (defined $globdir && ! compat(2)) {
+               if (defined $globdir && ! compat(2) && ! $x) {
                        foreach (map { glob "$globdir/$_" } split) {
                                s#^$globdir/##;
                                push @line, $_;
@@ -637,7 +670,8 @@ sub filedoublearray {
                }
                push @ret, [@line];
        }
-       close DH_FARRAY_IN;
+
+       close DH_FARRAY_IN || error("problem reading $file: $!");
        
        return @ret;
 }
@@ -926,4 +960,21 @@ sub set_buildflags {
        }
 }
 
+# Gets a DEB_BUILD_OPTIONS option, if set.
+sub get_buildoption {
+       my $wanted=shift;
+
+       return undef unless exists $ENV{DEB_BUILD_OPTIONS};
+
+       foreach my $opt (split(/\s+/, $ENV{DEB_BUILD_OPTIONS})) {
+               # currently parallel= is the only one with a parameter
+               if ($opt =~ /^parallel=(-?\d+)$/ && $wanted eq 'parallel') {
+                       return $1;
+               }
+               elsif ($opt eq $wanted) {
+                       return 1;
+               }
+       }
+}
+
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