summaryrefslogtreecommitdiff
path: root/tool/rbinstall.rb
blob: 65c0de7057e5175c0bd6a1d088307ca96fa9099d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
#!./miniruby

begin
  load "./rbconfig.rb"
rescue LoadError
  CONFIG = Hash.new {""}
else
  include RbConfig
  $".unshift File.expand_path("./rbconfig.rb")
end

srcdir = File.expand_path('../..', __FILE__)
unless defined?(CROSS_COMPILING) and CROSS_COMPILING
  $:.replace([srcdir+"/lib", Dir.pwd])
end
require 'fileutils'
require 'shellwords'
require 'optparse'
require 'optparse/shellwords'
require 'ostruct'
require 'rubygems'
begin
  require "zlib"
rescue LoadError
  $" << "zlib.rb"
end

STDOUT.sync = true
File.umask(077)

def parse_args(argv = ARGV)
  $mantype = 'doc'
  $destdir = nil
  $extout = nil
  $make = 'make'
  $mflags = []
  $install = []
  $installed_list = nil
  $dryrun = false
  $rdocdir = nil
  $data_mode = 0644
  $prog_mode = 0755
  $dir_mode = nil
  $script_mode = nil
  $strip = false
  $cmdtype = (if File::ALT_SEPARATOR == '\\'
                File.exist?("rubystub.exe") ? 'exe' : 'cmd'
              end)
  mflags = []
  opt = OptionParser.new
  opt.on('-n', '--dry-run') {$dryrun = true}
  opt.on('--dest-dir=DIR') {|dir| $destdir = dir}
  opt.on('--extout=DIR') {|dir| $extout = (dir unless dir.empty?)}
  opt.on('--make=COMMAND') {|make| $make = make}
  opt.on('--mantype=MAN') {|man| $mantype = man}
  opt.on('--make-flags=FLAGS', '--mflags', Shellwords) do |v|
    if arg = v.first
      arg.insert(0, '-') if /\A[^-][^=]*\Z/ =~ arg
    end
    $mflags.concat(v)
  end
  opt.on('-i', '--install=TYPE', $install_procs.keys) do |ins|
    $install << ins
  end
  opt.on('--data-mode=OCTAL-MODE', OptionParser::OctalInteger) do |mode|
    $data_mode = mode
  end
  opt.on('--prog-mode=OCTAL-MODE', OptionParser::OctalInteger) do |mode|
    $prog_mode = mode
  end
  opt.on('--dir-mode=OCTAL-MODE', OptionParser::OctalInteger) do |mode|
    $dir_mode = mode
  end
  opt.on('--script-mode=OCTAL-MODE', OptionParser::OctalInteger) do |mode|
    $script_mode = mode
  end
  opt.on('--installed-list [FILENAME]') {|name| $installed_list = name}
  opt.on('--rdoc-output [DIR]') {|dir| $rdocdir = dir}
  opt.on('--cmd-type=TYPE', %w[cmd plain]) {|cmd| $cmdtype = (cmd unless cmd == 'plain')}
  opt.on('--[no-]strip') {|strip| $strip = strip}

  opt.order!(argv) do |v|
    case v
    when /\AINSTALL[-_]([-\w]+)=(.*)/
      argv.unshift("--#{$1.tr('_', '-')}=#{$2}")
    when /\A\w[-\w+]*=\z/
      mflags << v
    when /\A\w[-\w+]*\z/
      $install << v.intern
    else
      raise OptionParser::InvalidArgument, v
    end
  end rescue abort "#{$!.message}\n#{opt.help}"

  unless defined?(RbConfig)
    puts opt.help
    exit
  end

  $make, *rest = Shellwords.shellwords($make)
  $mflags.unshift(*rest) unless rest.empty?
  $mflags.unshift(*mflags)

  def $mflags.set?(flag)
    grep(/\A-(?!-).*#{flag.chr}/i) { return true }
    false
  end
  def $mflags.defined?(var)
    grep(/\A#{var}=(.*)/) {return block_given? ? yield($1) : $1}
    false
  end

  if $mflags.set?(?n)
    $dryrun = true
  else
    $mflags << '-n' if $dryrun
  end

  $destdir ||= $mflags.defined?("DESTDIR")
  if $extout ||= $mflags.defined?("EXTOUT")
    RbConfig.expand($extout)
  end

  $continue = $mflags.set?(?k)

  if $installed_list ||= $mflags.defined?('INSTALLED_LIST')
    RbConfig.expand($installed_list, RbConfig::CONFIG)
    $installed_list = open($installed_list, "ab")
    $installed_list.sync = true
  end

  $rdocdir ||= $mflags.defined?('RDOCOUT')

  $dir_mode ||= $prog_mode | 0700
  $script_mode ||= $prog_mode
end

$install_procs = Hash.new {[]}
def install?(*types, &block)
  $install_procs[:all] <<= block
  types.each do |type|
    $install_procs[type] <<= block
  end
end

def strip_file(files)
  if !defined?($strip_command) and (cmd = CONFIG["STRIP"])
    case cmd
    when "", "true", ":" then return
    else $strip_command = Shellwords.shellwords(cmd)
    end
  elsif !$strip_command
    return
  end
  system(*($strip_command + [files].flatten))
end

def install(src, dest, options = {})
  options = options.clone
  strip = options.delete(:strip)
  options[:preserve] = true
  d = with_destdir(dest)
  super(src, d, options)
  srcs = Array(src)
  if strip
    d = srcs.map {|s| File.join(d, File.basename(s))} if $made_dirs[dest]
    strip_file(d)
  end
  if $installed_list
    dest = srcs.map {|s| File.join(dest, File.basename(s))} if $made_dirs[dest]
    $installed_list.puts dest
  end
end

def ln_sf(src, dest)
  super(src, with_destdir(dest))
  $installed_list.puts dest if $installed_list
end

$made_dirs = {}
def makedirs(dirs)
  dirs = fu_list(dirs)
  dirs.collect! do |dir|
    realdir = with_destdir(dir)
    realdir unless $made_dirs.fetch(dir) do
      $made_dirs[dir] = true
      $installed_list.puts(File.join(dir, "")) if $installed_list
      File.directory?(realdir)
    end
  end.compact!
  super(dirs, :mode => $dir_mode) unless dirs.empty?
end

FalseProc = proc {false}
def path_matcher(pat)
  if pat and !pat.empty?
    proc {|f| pat.any? {|n| File.fnmatch?(n, f)}}
  else
    FalseProc
  end
end

def install_recursive(srcdir, dest, options = {})
  opts = options.clone
  noinst = opts.delete(:no_install)
  glob = opts.delete(:glob) || "*"
  maxdepth = opts.delete(:maxdepth)
  subpath = (srcdir.size+1)..-1
  prune = []
  skip = []
  if noinst
    if Array === noinst
      prune = noinst.grep(/#{File::SEPARATOR}/o).map!{|f| f.chomp(File::SEPARATOR)}
      skip = noinst.grep(/\A[^#{File::SEPARATOR}]*\z/o)
    else
      if noinst.index(File::SEPARATOR)
        prune = [noinst]
      else
        skip = [noinst]
      end
    end
  end
  skip |= %w"#*# *~ *.old *.bak *.orig *.rej *.diff *.patch *.core"
  prune = path_matcher(prune)
  skip = path_matcher(skip)
  File.directory?(srcdir) or return rescue return
  paths = [[srcdir, dest, 0]]
  found = []
  while file = paths.shift
    found << file
    file, d, dir = *file
    if dir
      depth = dir + 1
      next if maxdepth and maxdepth < depth
      files = []
      Dir.foreach(file) do |f|
        src = File.join(file, f)
        d = File.join(dest, dir = src[subpath])
        stat = File.lstat(src) rescue next
        if stat.directory?
          files << [src, d, depth] if maxdepth != depth and /\A\./ !~ f and !prune[dir]
        elsif stat.symlink?
          # skip
        else
          files << [src, d, false] if File.fnmatch?(glob, f) and !skip[f]
        end
      end
      paths.insert(0, *files)
    end
  end
  for src, d, dir in found
    if dir
      makedirs(d)
    else
      makedirs(d[/.*(?=\/)/m])
      if block_given?
        yield src, d, opts
      else
        install src, d, opts
      end
    end
  end
end

def open_for_install(path, mode)
  data = open(realpath = with_destdir(path), "rb") {|f| f.read} rescue nil
  newdata = yield
  unless $dryrun
    unless newdata == data
      open(realpath, "wb", mode) {|f| f.write newdata}
    end
    File.chmod(mode, realpath)
  end
  $installed_list.puts path if $installed_list
end

def with_destdir(dir)
  return dir if !$destdir or $destdir.empty?
  dir = dir.sub(/\A\w:/, '') if File::PATH_SEPARATOR == ';'
  $destdir + dir
end

def without_destdir(dir)
  return dir if !$destdir or $destdir.empty? or !dir.start_with?($destdir)
  dir = dir.sub(/\A\w:/, '') if File::PATH_SEPARATOR == ';'
  dir[$destdir.size..-1]
end

def prepare(mesg, basedir, subdirs=nil)
  return unless basedir
  case
  when !subdirs
    dirs = basedir
  when subdirs.size == 0
    subdirs = nil
  when subdirs.size == 1
    dirs = [basedir = File.join(basedir, subdirs)]
    subdirs = nil
  else
    dirs = [basedir, *subdirs.collect {|dir| File.join(basedir, dir)}]
  end
  printf("installing %-18s %s%s\n", "#{mesg}:", basedir,
         (subdirs ? " (#{subdirs.join(', ')})" : ""))
  makedirs(dirs)
end

def CONFIG.[](name, mandatory = false)
  value = super(name)
  if mandatory
    raise "CONFIG['#{name}'] must be set" if !value or value.empty?
  end
  value
end

exeext = CONFIG["EXEEXT"]

ruby_install_name = CONFIG["ruby_install_name", true]
rubyw_install_name = CONFIG["rubyw_install_name"]
goruby_install_name = "go" + ruby_install_name

bindir = CONFIG["bindir", true]
libdir = CONFIG[CONFIG.fetch("libdirname", "libdir"), true]
rubyhdrdir = CONFIG["rubyhdrdir", true]
archhdrdir = CONFIG["rubyarchhdrdir"] || (rubyhdrdir + "/" + CONFIG['arch'])
rubylibdir = CONFIG["rubylibdir", true]
archlibdir = CONFIG["rubyarchdir", true]
sitelibdir = CONFIG["sitelibdir"]
sitearchlibdir = CONFIG["sitearchdir"]
vendorlibdir = CONFIG["vendorlibdir"]
vendorarchlibdir = CONFIG["vendorarchdir"]
mandir = CONFIG["mandir", true]
docdir = CONFIG["docdir", true]
configure_args = Shellwords.shellwords(CONFIG["configure_args"])
enable_shared = CONFIG["ENABLE_SHARED"] == 'yes'
dll = CONFIG["LIBRUBY_SO", enable_shared]
lib = CONFIG["LIBRUBY", true]
arc = CONFIG["LIBRUBY_A", true]
config_h = File.read(CONFIG["EXTOUT"]+"/include/"+CONFIG["arch"]+"/ruby/config.h")
load_relative = config_h[/^\s*#\s*define\s+LOAD_RELATIVE\s+(\d+)/, 1].to_i.nonzero?

install?(:local, :arch, :bin, :'bin-arch') do
  prepare "binary commands", bindir

  install ruby_install_name+exeext, bindir, :mode => $prog_mode, :strip => $strip
  if rubyw_install_name and !rubyw_install_name.empty?
    install rubyw_install_name+exeext, bindir, :mode => $prog_mode, :strip => $strip
  end
  if File.exist? goruby_install_name+exeext
    install goruby_install_name+exeext, bindir, :mode => $prog_mode, :strip => $strip
  end
  if enable_shared and dll != lib
    install dll, bindir, :mode => $prog_mode, :strip => $strip
  end
end

install?(:local, :arch, :lib) do
  prepare "base libraries", libdir

  install lib, libdir, :mode => $prog_mode, :strip => $strip unless lib == arc
  install arc, libdir, :mode => $data_mode
  if dll == lib and dll != arc
    for link in CONFIG["LIBRUBY_ALIASES"].split
      ln_sf(dll, File.join(libdir, link))
    end
  end

  prepare "arch files", archlibdir
  install "rbconfig.rb", archlibdir, :mode => $data_mode
  if CONFIG["ARCHFILE"]
    for file in CONFIG["ARCHFILE"].split
      install file, archlibdir, :mode => $data_mode
    end
  end
end

install?(:local, :arch, :data) do
  pc = CONFIG["ruby_pc"]
  if pc and File.file?(pc) and File.size?(pc)
    prepare "pkgconfig data", pkgconfigdir = File.join(libdir, "pkgconfig")
    install pc, pkgconfigdir, :mode => $data_mode
  end
end

install?(:ext, :arch, :'ext-arch') do
  prepare "extension objects", archlibdir
  noinst = %w[-* -*/] | (CONFIG["no_install_files"] || "").split
  install_recursive("#{$extout}/#{CONFIG['arch']}", archlibdir, :no_install => noinst, :mode => $prog_mode, :strip => $strip)
  prepare "extension objects", sitearchlibdir
  prepare "extension objects", vendorarchlibdir
end
install?(:ext, :arch, :hdr, :'arch-hdr') do
  prepare "extension headers", archhdrdir
  install_recursive("#{$extout}/include/#{CONFIG['arch']}", archhdrdir, :glob => "*.h", :mode => $data_mode)
end
install?(:ext, :comm, :'ext-comm') do
  prepare "extension scripts", rubylibdir
  install_recursive("#{$extout}/common", rubylibdir, :mode => $data_mode)
  prepare "extension scripts", sitelibdir
  prepare "extension scripts", vendorlibdir
end
install?(:ext, :comm, :hdr, :'comm-hdr') do
  hdrdir = rubyhdrdir + "/ruby"
  prepare "extension headers", hdrdir
  install_recursive("#{$extout}/include/ruby", hdrdir, :glob => "*.h", :mode => $data_mode)
end

install?(:doc, :rdoc) do
  if $rdocdir
    ridatadir = File.join(CONFIG['ridir'], CONFIG['ruby_version'], "system")
    prepare "rdoc", ridatadir
    install_recursive($rdocdir, ridatadir, :mode => $data_mode)
  end
end
install?(:doc, :capi) do
  prepare "capi-docs", docdir
  install_recursive "doc/capi", docdir+"/capi", :mode => $data_mode
end

if load_relative
  PROLOG_SCRIPT = <<EOS
#!/bin/sh\n# -*- ruby -*-
bindir="${0%/*}"
EOS
  if CONFIG["LIBRUBY_RELATIVE"] != 'yes' and libpathenv = CONFIG["LIBPATHENV"]
    pathsep = File::PATH_SEPARATOR
    PROLOG_SCRIPT << <<EOS
prefix="${bindir%/bin}"
export #{libpathenv}="$prefix/lib${#{libpathenv}:+#{pathsep}$#{libpathenv}}"
EOS
  end
  PROLOG_SCRIPT << %Q[exec "$bindir/#{ruby_install_name}" -x "$0" "$@"\n]
else
  PROLOG_SCRIPT = nil
end

install?(:local, :comm, :bin, :'bin-comm') do
  prepare "command scripts", bindir

  ruby_shebang = File.join(bindir, ruby_install_name)
  if File::ALT_SEPARATOR
    ruby_bin = ruby_shebang.tr(File::SEPARATOR, File::ALT_SEPARATOR)
    if $cmdtype == 'exe'
      stub = File.open("rubystub.exe", "rb") {|f| f.read} << "\n" rescue nil
    end
  end
  if trans = CONFIG["program_transform_name"]
    exp = []
    trans.gsub!(/\$\$/, '$')
    trans.scan(%r[\G[\s;]*(/(?:\\.|[^/])*/)?([sy])(\\?\W)((?:(?!\3)(?:\\.|.))*)\3((?:(?!\3)(?:\\.|.))*)\3([gi]*)]) do
      |addr, cmd, sep, pat, rep, opt|
      addr &&= Regexp.new(addr[/\A\/(.*)\/\z/, 1])
      case cmd
      when 's'
        next if pat == '^' and rep.empty?
        exp << [addr, (opt.include?('g') ? :gsub! : :sub!),
                Regexp.new(pat, opt.include?('i')), rep.gsub(/&/){'\&'}]
      when 'y'
        exp << [addr, :tr!, Regexp.quote(pat), rep]
      end
    end
    trans = proc do |base|
      exp.each {|addr, opt, pat, rep| base.__send__(opt, pat, rep) if !addr or addr =~ base}
      base
    end
  elsif /ruby/ =~ ruby_install_name
    trans = proc {|base| ruby_install_name.sub(/ruby/, base)}
  else
    trans = proc {|base| base}
  end
  prebatch = ':""||{ ""=> %q<-*- ruby -*-'"\n"
  postbatch = PROLOG_SCRIPT ? "};{\n#{PROLOG_SCRIPT.sub(/\A(?:#.*\n)*/, '')}" : ''
  postbatch << ">,\n}\n"
  postbatch.gsub!(/(?=\n)/, ' #')
  install_recursive(File.join(srcdir, "bin"), bindir, :maxdepth => 1) do |src, cmd|
    cmd = cmd.sub(/[^\/]*\z/m) {|n| RbConfig.expand(trans[n])}

    shebang, body = open(src, "rb") do |f|
      next f.gets, f.read
    end
    shebang or raise "empty file - #{src}"
    if PROLOG_SCRIPT and !$cmdtype
      shebang.sub!(/\A(\#!.*?ruby\b)?/) {PROLOG_SCRIPT + ($1 || "#!ruby\n")}
    else
      shebang.sub!(/\A(\#!.*?ruby\b)?/) {"#!" + ruby_shebang + ($1 ? "" : "\n")}
    end
    shebang.sub!(/\r$/, '')
    body.gsub!(/\r$/, '')

    cmd << ".#{$cmdtype}" if $cmdtype
    open_for_install(cmd, $script_mode) do
      case $cmdtype
      when "exe"
        stub + shebang + body
      when "cmd"
        prebatch + <<"/EOH" << postbatch << shebang << body
@"%~dp0#{ruby_install_name}" -x "%~f0" %*
@exit /b %ERRORLEVEL%
/EOH
      else
        shebang + body
      end
    end
  end
end

install?(:local, :comm, :lib) do
  prepare "library scripts", rubylibdir
  noinst = %w[README* *.txt *.rdoc *.gemspec]
  install_recursive(File.join(srcdir, "lib"), rubylibdir, :no_install => noinst, :mode => $data_mode)
end

install?(:local, :comm, :hdr, :'comm-hdr') do
  prepare "common headers", rubyhdrdir

  noinst = []
  unless RUBY_PLATFORM =~ /mswin|mingw|bccwin/
    noinst << "win32.h"
  end
  noinst = nil if noinst.empty?
  install_recursive(File.join(srcdir, "include"), rubyhdrdir, :no_install => noinst, :glob => "*.h", :mode => $data_mode)
end

install?(:local, :comm, :man) do
  mdocs = Dir["#{srcdir}/man/*.[1-9]"]
  prepare "manpages", mandir, ([] | mdocs.collect {|mdoc| mdoc[/\d+$/]}).sort.collect {|sec| "man#{sec}"}

  mandir = File.join(mandir, "man")
  has_goruby = File.exist?(goruby_install_name+exeext)
  require File.join(srcdir, "tool/mdoc2man.rb") if $mantype != "doc"
  mdocs.each do |mdoc|
    next unless File.file?(mdoc) and open(mdoc){|fh| fh.read(1) == '.'}
    base = File.basename(mdoc)
    if base == "goruby.1"
      next unless has_goruby
    end

    destdir = mandir + (section = mdoc[/\d+$/])
    destname = ruby_install_name.sub(/ruby/, base.chomp(".#{section}"))
    destfile = File.join(destdir, "#{destname}.#{section}")

    if $mantype == "doc"
      install mdoc, destfile, :mode => $data_mode
    else
      class << (w = [])
        alias print push
      end
      open(mdoc) {|r| Mdoc2Man.mdoc2man(r, w)}
      open_for_install(destfile, $data_mode) {w.join("")}
    end
  end
end

module RbInstall
  module Specs
    class FileCollector
      def initialize(base_dir)
        @base_dir = base_dir
      end

      def collect
        (ruby_libraries + built_libraries).sort
      end

      private
      def type
        /\/(ext|lib)?\/.*?\z/ =~ @base_dir
        $1
      end

      def ruby_libraries
        case type
        when "ext"
          prefix = "#{$extout}/common/"
          base = "#{prefix}#{relative_base}"
        when "lib"
          base = @base_dir
          prefix = base.sub(/lib\/.*?\z/, "") + "lib/"
        end

        Dir.glob("#{base}{.rb,/**/*.rb}").collect do |ruby_source|
          remove_prefix(prefix, ruby_source)
        end
      end

      def built_libraries
        case type
        when "ext"
          prefix = "#{$extout}/#{CONFIG['arch']}/"
          base = "#{prefix}#{relative_base}"
          dlext = CONFIG['DLEXT']
          Dir.glob("#{base}{.#{dlext},/**/*.#{dlext}}").collect do |built_library|
            remove_prefix(prefix, built_library)
          end
        when "lib"
          []
        end
      end

      def relative_base
        /\/#{Regexp.escape(type)}\/(.*?)\z/ =~ @base_dir
        $1
      end

      def remove_prefix(prefix, string)
        string.sub(/\A#{Regexp.escape(prefix)}/, "")
      end
    end

    class Reader < Struct.new(:src)
      def gemspec
        @gemspec ||= begin
          spec = Gem::Specification.load(src) || raise("invalid spec in #{src}")
          file_collector = FileCollector.new(File.dirname(src))
          spec.files = file_collector.collect
          spec
        end
      end

      def spec_source
        @gemspec.to_ruby
      end
    end

    class Generator < Struct.new(:name, :base_dir, :src, :execs)
      def gemspec
        @gemspec ||= eval spec_source
      end

      def spec_source
        <<-GEMSPEC
Gem::Specification.new do |s|
  s.name = #{name.dump}
  s.version = #{version.dump}
  s.summary = "This #{name} is bundled with Ruby"
  s.executables = #{execs.inspect}
  s.files = #{files.inspect}
end
        GEMSPEC
      end

      private
      def version
        version = open(src) { |f|
          f.find { |s| /^\s*\w*VERSION\s*=(?!=)/ =~ s }
        } or return
        version.split(%r"=\s*", 2)[1].strip[/\A([\'\"])(.*?)\1/, 2]
      end

      def files
        file_collector = FileCollector.new(base_dir)
        file_collector.collect
      end
    end
  end

  class UnpackedInstaller < Gem::Installer
    module DirPackage
      def extract_files(destination_dir, pattern = "*")
        path = File.dirname(@gem.path)
        return if path == destination_dir
        File.chmod(0700, destination_dir)
        mode = pattern == "bin/*" ? $script_mode : $data_mode
        install_recursive(path, without_destdir(destination_dir),
                          :glob => pattern,
                          :no_install => "*.gemspec",
                          :mode => mode)
        File.chmod($dir_mode, destination_dir)
      end
    end

    def initialize(spec, *options)
      super(spec.loaded_from, *options)
      @package.extend(DirPackage).spec = spec
    end

    def write_cache_file
    end
  end
end

class Gem::Installer
  generate_bin_script = instance_method(:generate_bin_script)
  define_method(:generate_bin_script) do |filename, bindir|
    generate_bin_script.bind(self).call(filename, bindir)
    File.chmod($script_mode, File.join(bindir, formatted_program_filename(filename)))
  end
end

# :startdoc:

install?(:ext, :comm, :gem) do
  gem_dir = Gem.default_dir
  directories = Gem.ensure_gem_subdirectories(gem_dir, :mode => $dir_mode)
  prepare "default gems", gem_dir, directories

  spec_dir = File.join(gem_dir, directories.grep(/^spec/)[0])
  default_spec_dir = "#{spec_dir}/default"
  makedirs(default_spec_dir)

  gems = {}
  File.foreach(File.join(srcdir, "defs/default_gems")) do |line|
    line.chomp!
    line.sub!(/\s*#.*/, '')
    next if line.empty?
    words = []
    line.scan(/\G\s*([^\[\]\s]+|\[([^\[\]]*)\])/) do
      words << ($2 ? $2.split : $1)
    end
    name, base_dir, src, execs = *words
    next unless name and base_dir and src

    src       = File.join(srcdir, src)
    base_dir  = File.join(srcdir, base_dir)
    specgen   = RbInstall::Specs::Generator.new(name, base_dir, src, execs || [])
    gems[name] ||= specgen
  end

  Dir.glob(srcdir+"/{lib,ext}/**/*.gemspec").each do |src|
    specgen   = RbInstall::Specs::Reader.new(src)
    gems[specgen.gemspec.name] ||= specgen
  end

  gems.sort.each do |name, specgen|
    gemspec   = specgen.gemspec
    full_name = "#{gemspec.name}-#{gemspec.version}"

    puts "#{" "*30}#{gemspec.name} #{gemspec.version}"
    gemspec_path = File.join(default_spec_dir, "#{full_name}.gemspec")
    open_for_install(gemspec_path, $data_mode) do
      specgen.spec_source
    end

    unless gemspec.executables.empty? then
      bin_dir = File.join(gem_dir, 'gems', full_name, 'bin')
      makedirs(bin_dir)

      execs = gemspec.executables.map {|exec| File.join(srcdir, 'bin', exec)}
      install(execs, bin_dir, :mode => $script_mode)
    end
  end
end

install?(:ext, :comm, :gem) do
  gem_dir = Gem.default_dir
  directories = Gem.ensure_gem_subdirectories(gem_dir, :mode => $dir_mode)
  prepare "bundle gems", gem_dir, directories
  install_dir = with_destdir(gem_dir)
  installed_gems = {}
  options = {
    :install_dir => install_dir,
    :bin_dir => with_destdir(bindir),
    :domain => :local,
    :ignore_dependencies => true,
    :dir_mode => $dir_mode,
    :data_mode => $data_mode,
    :prog_mode => $prog_mode,
    :wrappers => true,
    :format_executable => true,
  }
  Gem::Specification.each_spec([srcdir+'/gems/*']) do |spec|
    ins = RbInstall::UnpackedInstaller.new(spec, options)
    puts "#{" "*30}#{spec.name} #{spec.version}"
    ins.install
    installed_gems[spec.full_name] = true
  end
  installed_gems, gems = Dir.glob(srcdir+'/gems/*.gem').partition {|gem| installed_gems.key?(File.basename(gem, '.gem'))}
  unless installed_gems.empty?
    install installed_gems, gem_dir+"/cache"
  end
  next if gems.empty?
  if defined?(Zlib)
    gems.each do |gem|
      Gem.install(gem, Gem::Requirement.default, options)
      gemname = File.basename(gem)
      puts "#{" "*30}#{gemname}"
    end
    # fix directory permissions
    # TODO: Gem.install should accept :dir_mode option or something
    File.chmod($dir_mode, *Dir.glob(install_dir+"/**/"))
    # fix .gemspec permissions
    File.chmod($data_mode, *Dir.glob(install_dir+"/specifications/*.gemspec"))
  else
    puts "skip installing bundle gems because of lacking zlib"
  end
end

parse_args()

include FileUtils
include FileUtils::NoWrite if $dryrun
@fileutils_output = STDOUT
@fileutils_label = ''

all = $install.delete(:all)
$install << :local << :ext if $install.empty?
installs = $install.map do |inst|
  if !(procs = $install_procs[inst]) || procs.empty?
    next warn("unknown install target - #{inst}")
  end
  procs
end
installs.flatten!
installs.uniq!
installs |= $install_procs[:all] if all
installs.each do |block|
  dir = Dir.pwd
  begin
    block.call
  ensure
    Dir.chdir(dir)
  end
end

# vi:set sw=2: