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48af1939 |
1 | package App::FatPacker; |
2 | |
3 | use strict; |
4 | use warnings FATAL => 'all'; |
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5 | use 5.008001; |
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6 | use Getopt::Long; |
7 | use Cwd qw(cwd); |
8 | use File::Find qw(find); |
9 | use File::Spec::Functions qw( |
10 | catdir splitpath splitdir catpath rel2abs abs2rel |
11 | ); |
12 | use File::Copy qw(copy); |
13 | use File::Path qw(make_path remove_tree); |
14 | use B qw(perlstring); |
15 | |
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16 | our $VERSION = '0.009001'; # 0.9.1 |
17 | |
18 | $VERSION = eval $VERSION; |
19 | |
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20 | my $option_parser = Getopt::Long::Parser->new( |
21 | config => [ qw(require_order pass_through bundling no_auto_abbrev) ] |
22 | ); |
23 | |
24 | sub call_parser { |
25 | local *ARGV = [ @{$_[0]} ]; |
26 | $option_parser->getoptions(@{$_[1]}); |
27 | [ @ARGV ]; |
28 | } |
29 | |
30 | sub lines_of { |
31 | map +(chomp,$_)[1], do { local @ARGV = ($_[0]); <> }; |
32 | } |
33 | |
34 | sub stripspace { |
35 | my ($text) = @_; |
36 | $text =~ /^(\s+)/ && $text =~ s/^$1//mg; |
37 | $text; |
38 | } |
39 | |
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40 | sub import { |
41 | $_[1] eq '-run_script' |
42 | and return shift->new->run_script; |
43 | } |
44 | |
45 | sub new { bless({}, $_[0]) } |
46 | |
47 | sub run_script { |
48 | my ($self, $args) = @_; |
49 | my @args = $args ? @$args : @ARGV; |
50 | (my $cmd = shift @args) =~ s/-/_/g; |
51 | if (my $meth = $self->can("script_command_${cmd}")) { |
52 | $self->$meth(\@args); |
53 | } else { |
54 | die "No such command ${cmd}"; |
55 | } |
56 | } |
57 | |
58 | sub script_command_trace { |
59 | my ($self, $args) = @_; |
60 | |
61 | $args = call_parser $args => [ |
62 | 'to=s' => \my $file, |
63 | 'to-stderr' => \my $to_stderr, |
64 | ]; |
65 | |
66 | die "Can't use to and to-stderr on same call" if $file && $to_stderr; |
67 | |
68 | (my $use_file = $file) ||= 'fatpacker.trace'; |
69 | if (!$to_stderr and -e $use_file) { |
70 | unlink $use_file or die "Couldn't remove old trace file: $!"; |
71 | } |
72 | my $arg = do { |
73 | if ($file) { |
74 | "=>>${file}" |
75 | } elsif ($to_stderr) { |
76 | "=>&STDERR" |
77 | } else { |
78 | "" |
79 | } |
80 | }; |
81 | { |
82 | local $ENV{PERL5OPT} = '-MApp::FatPacker::Trace'.$arg; |
83 | system $^X, @$args; |
84 | } |
85 | } |
86 | |
87 | sub script_command_packlists_for { |
88 | my ($self, $args) = @_; |
89 | foreach my $pl ($self->packlists_containing($args)) { |
90 | print "${pl}\n"; |
91 | } |
92 | } |
93 | |
94 | sub packlists_containing { |
95 | my ($self, $targets) = @_; |
96 | my @targets = @$targets; |
97 | require $_ for @targets; |
98 | my @search = grep -d $_, map catdir($_, 'auto'), @INC; |
99 | my %pack_rev; |
100 | my $cwd = cwd; |
101 | find(sub { |
102 | return unless $_ eq '.packlist' && -f $_; |
103 | $pack_rev{$_} = $File::Find::name for lines_of $File::Find::name; |
104 | }, @search); |
105 | chdir($cwd) or die "Couldn't chdir back to ${cwd} after find: $!"; |
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106 | my %found; @found{map +($pack_rev{$INC{$_}}||()), @targets} = (); |
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107 | sort keys %found; |
108 | } |
109 | |
110 | sub script_command_tree { |
111 | my ($self, $args) = @_; |
112 | my $base = catdir(cwd,'fatlib'); |
113 | $self->packlists_to_tree($base, $args); |
114 | } |
115 | |
116 | sub packlists_to_tree { |
117 | my ($self, $where, $packlists) = @_; |
118 | remove_tree $where; |
119 | make_path $where; |
120 | foreach my $pl (@$packlists) { |
121 | my ($vol, $dirs, $file) = splitpath $pl; |
122 | my @dir_parts = splitdir $dirs; |
123 | my $pack_base; |
124 | PART: foreach my $p (0 .. $#dir_parts) { |
125 | if ($dir_parts[$p] eq 'auto') { |
126 | # $p-2 since it's <wanted path>/$Config{archname}/auto |
127 | $pack_base = catpath $vol, catdir @dir_parts[0..$p-2]; |
128 | last PART; |
129 | } |
130 | } |
131 | die "Couldn't figure out base path of packlist ${pl}" unless $pack_base; |
132 | foreach my $source (lines_of $pl) { |
133 | # there is presumably a better way to do "is this under this base?" |
134 | # but if so, it's not obvious to me in File::Spec |
135 | next unless substr($source,0,length $pack_base) eq $pack_base; |
136 | my $target = rel2abs( abs2rel($source, $pack_base), $where ); |
137 | my $target_dir = catpath((splitpath $target)[0,1]); |
138 | make_path $target_dir; |
139 | copy $source => $target; |
140 | } |
141 | } |
142 | } |
143 | |
144 | sub script_command_file { |
145 | my ($self, $args) = @_; |
146 | my $file = shift @$args; |
147 | my $cwd = cwd; |
148 | my @dirs = map rel2abs($_, $cwd), ('lib','fatlib'); |
149 | my %files; |
150 | foreach my $dir (@dirs) { |
151 | find(sub { |
152 | return unless -f $_; |
153 | !/\.pm$/ and warn "File ${File::Find::name} isn't a .pm file - can't pack this and if you hoped we were going to things may not be what you expected later\n" and return; |
154 | $files{abs2rel($File::Find::name,$dir)} = do { |
155 | local (@ARGV, $/) = ($File::Find::name); <> |
156 | }; |
157 | }, $dir); |
158 | } |
159 | my $start = stripspace <<' END_START'; |
160 | # This chunk of stuff was generated by App::FatPacker. To find the original |
161 | # file's code, look for the end of this BEGIN block or the string 'FATPACK' |
162 | BEGIN { |
163 | my %fatpacked; |
164 | END_START |
165 | my $end = stripspace <<' END_END'; |
166 | s/^ //mg for values %fatpacked; |
167 | |
168 | unshift @INC, sub { |
169 | if (my $fat = $fatpacked{$_[1]}) { |
170 | open my $fh, '<', \$fat; |
171 | return $fh; |
172 | } |
173 | return |
174 | }; |
175 | |
176 | } # END OF FATPACK CODE |
177 | END_END |
178 | my @segments = map { |
179 | (my $stub = $_) =~ s/\.pm$//; |
180 | my $name = uc join '_', split '/', $stub; |
181 | my $data = $files{$_}; $data =~ s/^/ /mg; |
182 | '$fatpacked{'.perlstring($_).qq!} = <<'${name}';\n! |
183 | .qq!${data}${name}\n!; |
184 | } sort keys %files; |
185 | print join "\n", $start, @segments, $end; |
186 | } |
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187 | |
188 | =head1 NAME |
189 | |
190 | App::FatPacker - pack your dependencies onto your script file |
191 | |
192 | =head1 SYNOPSIS |
193 | |
194 | $ fatpack trace myscript.pl |
195 | $ fatpack packlists-for `cat factpacker.trace` >packlists |
196 | $ fatpack tree fatlib `cat packlists` |
197 | $ (fatpack file; cat myscript.pl) >myscript.packed.pl |
198 | |
199 | See the documentation for the L<fatpack> script itself for more information. |
200 | |
201 | The programmatic API for this code is not yet fully decided, hence the 0.9.1 |
202 | release version. Expect that to be cleaned up for 1.0. |
203 | |
204 | =head1 SUPPORT |
205 | |
206 | Your current best avenue is to come annoy annoy mst on #toolchain on |
207 | irc.perl.org. There should be a non-IRC means of support by 1.0. |
208 | |
209 | =head1 AUTHOR |
210 | |
211 | Matt S. Trout (mst) <mst@shadowcat.co.uk> |
212 | |
213 | =head2 CONTRIBUTORS |
214 | |
215 | None as yet, though I probably owe lots of people thanks for ideas. Yet |
216 | another doc nit to fix. |
217 | |
218 | =head1 COPYRIGHT |
219 | |
220 | Copyright (c) 2010 the App::FatPacker L</AUTHOR> and L</CONTRIBUTORS> |
221 | as listed above. |
222 | |
223 | =head1 LICENSE |
224 | |
225 | This library is free software and may be distributed under the same terms |
226 | as perl itself. |
227 | |
228 | =cut |
229 | |
48af1939 |
230 | 1; |