lib/PXElator/file.pm

package file;

use File::Slurp;
use autodie;
use Carp qw/carp confess/;
use File::Path qw//;
use Data::Dump qw/dump/;

my $debug = 0;

sub mkpath {
        my $file = shift;
        my $dir = $1 if $file =~ s{(^.+)/[^/]+}{$1};
        if ( $dir && ! -d $dir ) {
                carp "# mkdir $dir";
                File::Path::mkpath $dir;
        }
}

sub append {
        my ( $file, $content ) = @_;

        if ( ! -e $file ) {
                mkpath $file;
                write_file $file, $content;
                my $size = -s $file;
                carp "## append created $size bytes in $file";
                return $size;
        }

        my $on_disk = read_file $file;

        my $relaxed_content = $content;
           $relaxed_content =~ s{\s+}{\\s+}gs;

        if ( $on_disk !~ m{$relaxed_content} ) {

#               $content =~ s{^[\n\r]+}{\n}s;
#               $content =~ s{[\n\r]*$}{\n}s;

                if ( $on_disk =~ s{([\s+]exit[\s\d]*)$}{\n$content\n$1}s ) {
                        warn "# insert $file\n$on_disk" if $debug;
                        write_file $file, $on_disk;
                } else {
                        warn "# append $file\n$content\n" if $debug;
                        open($fh, '>>', $file);
                        print $fh $content;
                        close($fh);
                }

                carp "## append to $file" if $debug;
                return -s $file;
        } else {
                warn "## $file not modified" if $debug;
        }
}

sub change {
        my ( $file, $from, $to ) = @_;

        my $content = read_file $file;
        if ( $content =~ s{$from}{$to}s ) {
                write_file $file, $content;
                carp "## change $file $from => $to" if $debug;
                return 1;
        } elsif ( $content !~ m{$to}s ) {
                confess "can't find $from to change into $to in $file in ",dump( $content );
        }
}

sub replace {
        my ( $file, $content ) = @_;
        mkpath $file;
        write_file $file, $content;
}

sub copy_once {
        my ( $from, $to ) = @_;
        die "no destination" unless $to;
        return if -e $to;
        mkpath $to;
        my $perm = (stat $from)[2];
        carp "# copy_once $from => $to $perm";
        write_file $to, read_file($from);
        chmod $perm, $to;
}

1;
1	package file;
2
3	use File::Slurp;
4	use autodie;
5	use Carp qw/carp confess/;
6	use File::Path qw//;
7	use Data::Dump qw/dump/;
8
9	my $debug = 0;
10
11	sub mkpath {
12	my $file = shift;
13	my $dir = $1 if $file =~ s{(^.+)/[^/]+}{$1};
14	if ( $dir && ! -d $dir ) {
15	carp "# mkdir $dir";
16	File::Path::mkpath $dir;
17	}
18	}
19
20	sub append {
21	my ( $file, $content ) = @_;
22
23	if ( ! -e $file ) {
24	mkpath $file;
25	write_file $file, $content;
26	my $size = -s $file;
27	carp "## append created $size bytes in $file";
28	return $size;
29	}
30
31	my $on_disk = read_file $file;
32
33	my $relaxed_content = $content;
34	$relaxed_content =~ s{\s+}{\\s+}gs;
35
36	if ( $on_disk !~ m{$relaxed_content} ) {
37
38	# $content =~ s{^[\n\r]+}{\n}s;
39	# $content =~ s{[\n\r]*$}{\n}s;
40
41	if ( $on_disk =~ s{([\s+]exit[\s\d]*)$}{\n$content\n$1}s ) {
42	warn "# insert $file\n$on_disk" if $debug;
43	write_file $file, $on_disk;
44	} else {
45	warn "# append $file\n$content\n" if $debug;
46	open($fh, '>>', $file);
47	print $fh $content;
48	close($fh);
49	}
50
51	carp "## append to $file" if $debug;
52	return -s $file;
53	} else {
54	warn "## $file not modified" if $debug;
55	}
56	}
57
58	sub change {
59	my ( $file, $from, $to ) = @_;
60
61	my $content = read_file $file;
62	if ( $content =~ s{$from}{$to}s ) {
63	write_file $file, $content;
64	carp "## change $file $from => $to" if $debug;
65	return 1;
66	} elsif ( $content !~ m{$to}s ) {
67	confess "can't find $from to change into $to in $file in ",dump( $content );
68	}
69	}
70
71	sub replace {
72	my ( $file, $content ) = @_;
73	mkpath $file;
74	write_file $file, $content;
75	}
76
77	sub copy_once {
78	my ( $from, $to ) = @_;
79	die "no destination" unless $to;
80	return if -e $to;
81	mkpath $to;
82	my $perm = (stat $from)[2];
83	carp "# copy_once $from => $to $perm";
84	write_file $to, read_file($from);
85	chmod $perm, $to;
86	}
87
88	1;