/
usr
/
local
/
share
/
man
/
man3
/
/usr/local/share/man/man3
mkdir
upload
Name
Size
Mode
Actions
App::Prove.3pm
10508
0444
edit
dl
rm
App::Prove::State.3pm
6005
0444
edit
dl
rm
App::Prove::State::Result.3pm
5619
0444
edit
dl
rm
App::Prove::State::Result::Test.3pm
5051
0444
edit
dl
rm
AppConfig.3pm
35289
0444
edit
dl
rm
AppConfig::Args.3pm
7992
0444
edit
dl
rm
AppConfig::CGI.3pm
6609
0444
edit
dl
rm
AppConfig::File.3pm
12614
0444
edit
dl
rm
AppConfig::Getopt.3pm
7444
0444
edit
dl
rm
AppConfig::State.3pm
24972
0444
edit
dl
rm
AppConfig::Sys.3pm
6695
0444
edit
dl
rm
Archive::Tar.3pm
44061
0444
edit
dl
rm
Archive::Tar::File.3pm
11083
0444
edit
dl
rm
Archive::Zip.3pm
69985
0444
edit
dl
rm
Archive::Zip::FAQ.3pm
18437
0444
edit
dl
rm
Archive::Zip::MemberRead.3pm
6734
0444
edit
dl
rm
Archive::Zip::Tree.3pm
2875
0444
edit
dl
rm
B::COW.3pm
5163
0444
edit
dl
rm
Canary::Stability.3pm
3727
0444
edit
dl
rm
CDB_File.3pm
14318
0444
edit
dl
rm
common::sense.3pm
0
0444
edit
dl
rm
Compress::Raw::Bzip2.3pm
13463
0444
edit
dl
rm
Compress::Raw::Zlib.3pm
42082
0444
edit
dl
rm
Compress::Zlib.3pm
38719
0444
edit
dl
rm
CPAN::Meta.3pm
15923
0444
edit
dl
rm
CPAN::Meta::Converter.3pm
6594
0444
edit
dl
rm
CPAN::Meta::Feature.3pm
4322
0444
edit
dl
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CPAN::Meta::History.3pm
7855
0444
edit
dl
rm
CPAN::Meta::History::Meta_1_0.3pm
9973
0444
edit
dl
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CPAN::Meta::History::Meta_1_1.3pm
12410
0444
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dl
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CPAN::Meta::History::Meta_1_2.3pm
22224
0444
edit
dl
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CPAN::Meta::History::Meta_1_3.3pm
23974
0444
edit
dl
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CPAN::Meta::History::Meta_1_4.3pm
24565
0444
edit
dl
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CPAN::Meta::Merge.3pm
5285
0444
edit
dl
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CPAN::Meta::Prereqs.3pm
7380
0444
edit
dl
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CPAN::Meta::Requirements.3pm
12308
0444
edit
dl
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CPAN::Meta::Spec.3pm
45592
0444
edit
dl
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CPAN::Meta::Validator.3pm
4215
0444
edit
dl
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CPAN::Meta::YAML.3pm
4230
0444
edit
dl
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Crypt::OpenSSL::Random.3pm
5634
0444
edit
dl
rm
Curses.3pm
37580
0444
edit
dl
rm
Curses::UI.3pm
15619
0444
edit
dl
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Curses::UI::Buttonbox.3pm
8908
0444
edit
dl
rm
Curses::UI::Calendar.3pm
8203
0444
edit
dl
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Curses::UI::Checkbox.3pm
6509
0444
edit
dl
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Curses::UI::Color.3pm
5903
0444
edit
dl
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Curses::UI::Common.3pm
6498
0444
edit
dl
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Curses::UI::Container.3pm
9041
0444
edit
dl
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Curses::UI::Dialog::Basic.3pm
5213
0444
edit
dl
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Curses::UI::Dialog::Calendar.3pm
4761
0444
edit
dl
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Curses::UI::Dialog::Dirbrowser.3pm
5369
0444
edit
dl
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Curses::UI::Dialog::Error.3pm
4307
0444
edit
dl
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Curses::UI::Dialog::Filebrowser.3pm
6889
0444
edit
dl
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Curses::UI::Dialog::Progress.3pm
5774
0444
edit
dl
rm
Curses::UI::Dialog::Question.3pm
5277
0444
edit
dl
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Curses::UI::Dialog::Status.3pm
4765
0444
edit
dl
rm
Curses::UI::Label.3pm
7333
0444
edit
dl
rm
Curses::UI::Listbox.3pm
11988
0444
edit
dl
rm
Curses::UI::Menubar.3pm
8110
0444
edit
dl
rm
Curses::UI::Notebook.3pm
9140
0444
edit
dl
rm
Curses::UI::PasswordEntry.3pm
3743
0444
edit
dl
rm
Curses::UI::Popupmenu.3pm
7431
0444
edit
dl
rm
Curses::UI::Progressbar.3pm
5891
0444
edit
dl
rm
Curses::UI::Radiobuttonbox.3pm
4069
0444
edit
dl
rm
Curses::UI::Searchable.3pm
6668
0444
edit
dl
rm
Curses::UI::TextEditor.3pm
14171
0444
edit
dl
rm
Curses::UI::TextEntry.3pm
3623
0444
edit
dl
rm
Curses::UI::TextViewer.3pm
3670
0444
edit
dl
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Curses::UI::Tutorial.3pm
8555
0444
edit
dl
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Curses::UI::Widget.3pm
25675
0444
edit
dl
rm
Curses::UI::Window.3pm
5084
0444
edit
dl
rm
Cwd.3pm
7183
0444
edit
dl
rm
Date::Format.3pm
7291
0444
edit
dl
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Date::Language.3pm
3809
0444
edit
dl
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Date::Language::Bulgarian.3pm
3675
0444
edit
dl
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Date::Language::Hungarian.3pm
3091
0444
edit
dl
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Date::Parse.3pm
5402
0444
edit
dl
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Digest::SHA.3pm
25759
0444
edit
dl
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Expect.3pm
60229
0444
edit
dl
rm
ExtUtils::CBuilder.3pm
11923
0444
edit
dl
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ExtUtils::CBuilder::Platform::Windows.3pm
3117
0444
edit
dl
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ExtUtils::Command.3pm
5942
0444
edit
dl
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ExtUtils::Command::MM.3pm
5723
0444
edit
dl
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ExtUtils::Liblist.3pm
12679
0444
edit
dl
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ExtUtils::MakeMaker.3pm
79357
0444
edit
dl
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ExtUtils::MakeMaker::Config.3pm
2587
0444
edit
dl
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ExtUtils::MakeMaker::FAQ.3pm
26829
0444
edit
dl
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ExtUtils::MakeMaker::Locale.3pm
11168
0444
edit
dl
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ExtUtils::MakeMaker::Tutorial.3pm
8389
0444
edit
dl
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ExtUtils::Manifest.3pm
11961
0444
edit
dl
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ExtUtils::Mkbootstrap.3pm
3459
0444
edit
dl
rm
ExtUtils::Mksymlists.3pm
6699
0444
edit
dl
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ExtUtils::MM.3pm
2829
0444
edit
dl
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ExtUtils::MM_AIX.3pm
3044
0444
edit
dl
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ExtUtils::MM_Any.3pm
31129
0444
edit
dl
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ExtUtils::MM_BeOS.3pm
2798
0444
edit
dl
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ExtUtils::MM_Cygwin.3pm
3569
0444
edit
dl
rm
ExtUtils::MM_Darwin.3pm
2688
0444
edit
dl
rm
ExtUtils::MM_DOS.3pm
3021
0444
edit
dl
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ExtUtils::MM_MacOS.3pm
2987
0444
edit
dl
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ExtUtils::MM_NW5.3pm
3200
0444
edit
dl
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ExtUtils::MM_OS2.3pm
2886
0444
edit
dl
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ExtUtils::MM_QNX.3pm
2942
0444
edit
dl
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ExtUtils::MM_Unix.3pm
21419
0444
edit
dl
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ExtUtils::MM_UWIN.3pm
3051
0444
edit
dl
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ExtUtils::MM_VMS.3pm
14900
0444
edit
dl
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ExtUtils::MM_VOS.3pm
2926
0444
edit
dl
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ExtUtils::MM_Win32.3pm
5919
0444
edit
dl
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ExtUtils::MM_Win95.3pm
3276
0444
edit
dl
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ExtUtils::MY.3pm
2764
0444
edit
dl
rm
ExtUtils::testlib.3pm
2690
0444
edit
dl
rm
File::GlobMapper.3pm
11447
0444
edit
dl
rm
File::HomeDir.3pm
18212
0444
edit
dl
rm
File::HomeDir::Darwin.3pm
3232
0444
edit
dl
rm
File::HomeDir::Darwin::Carbon.3pm
3517
0444
edit
dl
rm
File::HomeDir::Darwin::Cocoa.3pm
3446
0444
edit
dl
rm
File::HomeDir::Driver.3pm
3101
0444
edit
dl
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File::HomeDir::FreeDesktop.3pm
3487
0444
edit
dl
rm
File::HomeDir::MacOS9.3pm
3499
0444
edit
dl
rm
File::HomeDir::Test.3pm
3534
0444
edit
dl
rm
File::HomeDir::Unix.3pm
3638
0444
edit
dl
rm
File::HomeDir::Windows.3pm
4891
0444
edit
dl
rm
File::Path.3pm
31030
0444
edit
dl
rm
File::Slurp.3pm
23626
0444
edit
dl
rm
File::Spec.3pm
13784
0444
edit
dl
rm
File::Spec::AmigaOS.3pm
2826
0444
edit
dl
rm
File::Spec::Cygwin.3pm
3957
0444
edit
dl
rm
File::Spec::Epoc.3pm
3251
0444
edit
dl
rm
File::Spec::Functions.3pm
3799
0444
edit
dl
rm
File::Spec::Mac.3pm
18664
0444
edit
dl
rm
File::Spec::OS2.3pm
3118
0444
edit
dl
rm
File::Spec::Unix.3pm
9837
0444
edit
dl
rm
File::Spec::VMS.3pm
6389
0444
edit
dl
rm
File::Spec::Win32.3pm
6451
0444
edit
dl
rm
File::Temp.3pm
36799
0444
edit
dl
rm
File::Which.3pm
9746
0444
edit
dl
rm
Getopt::Long.3pm
52647
0444
edit
dl
rm
HDB.3pm
10947
0444
edit
dl
rm
HDB::CMDS.3pm
18894
0444
edit
dl
rm
HDB::Encode.3pm
7863
0444
edit
dl
rm
HDB::Object.3pm
10057
0444
edit
dl
rm
HTML::AsSubs.3pm
8586
0444
edit
dl
rm
HTML::Element.3pm
70793
0444
edit
dl
rm
HTML::Element::traverse.3pm
15984
0444
edit
dl
rm
HTML::Form.3pm
28158
0444
edit
dl
rm
HTML::Parse.3pm
8277
0444
edit
dl
rm
HTML::Tree.3pm
9982
0444
edit
dl
rm
HTML::Tree::AboutObjects.3pm
37918
0444
edit
dl
rm
HTML::Tree::AboutTrees.3pm
58534
0444
edit
dl
rm
HTML::Tree::Scanning.3pm
34385
0444
edit
dl
rm
HTML::TreeBuilder.3pm
30138
0444
edit
dl
rm
HTTP::Tiny.3pm
27709
0444
edit
dl
rm
IO::AtomicFile.3pm
5381
0444
edit
dl
rm
IO::Compress::Base.3pm
3506
0444
edit
dl
rm
IO::Compress::Bzip2.3pm
23260
0444
edit
dl
rm
IO::Compress::Deflate.3pm
26768
0444
edit
dl
rm
IO::Compress::FAQ.3pm
26718
0444
edit
dl
rm
IO::Compress::Gzip.3pm
34489
0444
edit
dl
rm
IO::Compress::RawDeflate.3pm
27134
0444
edit
dl
rm
IO::Compress::Zip.3pm
40870
0444
edit
dl
rm
IO::InnerFile.3pm
6035
0444
edit
dl
rm
IO::Lines.3pm
3783
0444
edit
dl
rm
IO::Pty.3pm
8579
0444
edit
dl
rm
IO::Scalar.3pm
10679
0444
edit
dl
rm
IO::ScalarArray.3pm
10528
0444
edit
dl
rm
IO::Stringy.3pm
4049
0444
edit
dl
rm
IO::Tty.3pm
8348
0444
edit
dl
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IO::Tty::Constant.3pm
10012
0444
edit
dl
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IO::Uncompress::AnyInflate.3pm
32800
0444
edit
dl
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IO::Uncompress::AnyUncompress.3pm
30767
0444
edit
dl
rm
IO::Uncompress::Base.3pm
3518
0444
edit
dl
rm
IO::Uncompress::Bunzip2.3pm
29171
0444
edit
dl
rm
IO::Uncompress::Gunzip.3pm
31719
0444
edit
dl
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IO::Uncompress::Inflate.3pm
29915
0444
edit
dl
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IO::Uncompress::RawInflate.3pm
29563
0444
edit
dl
rm
IO::Uncompress::Unzip.3pm
31279
0444
edit
dl
rm
IO::Wrap.3pm
10664
0444
edit
dl
rm
IO::WrapTie.3pm
14987
0444
edit
dl
rm
JSON::PP.3pm
50080
0444
edit
dl
rm
JSON::PP::Boolean.3pm
2667
0444
edit
dl
rm
JSON::Syck.3pm
8094
0444
edit
dl
rm
JSON::XS.3pm
89037
0444
edit
dl
rm
JSON::XS::Boolean.3pm
2857
0444
edit
dl
rm
lib::core::only.3pm
5647
0444
edit
dl
rm
local::lib.3pm
31390
0444
edit
dl
rm
LWP.3pm
28506
0444
edit
dl
rm
LWP::Authen::Ntlm.3pm
7489
0444
edit
dl
rm
LWP::ConnCache.3pm
9967
0444
edit
dl
rm
LWP::Debug.3pm
5608
0444
edit
dl
rm
LWP::MemberMixin.3pm
4821
0444
edit
dl
rm
LWP::Protocol.3pm
8350
0444
edit
dl
rm
LWP::Protocol::https.3pm
5684
0444
edit
dl
rm
LWP::RobotUA.3pm
9022
0444
edit
dl
rm
LWP::Simple.3pm
9016
0444
edit
dl
rm
LWP::UserAgent.3pm
48156
0444
edit
dl
rm
lwpcook.3pm
14838
0444
edit
dl
rm
lwptut.3pm
32441
0444
edit
dl
rm
Module::Build.3pm
44563
0444
edit
dl
rm
Module::Build::API.3pm
89267
0444
edit
dl
rm
Module::Build::Authoring.3pm
17363
0444
edit
dl
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Module::Build::Base.3pm
5157
0444
edit
dl
rm
Module::Build::Bundling.3pm
9999
0444
edit
dl
rm
Module::Build::Compat.3pm
10885
0444
edit
dl
rm
Module::Build::ConfigData.3pm
7388
0444
edit
dl
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Module::Build::Cookbook.3pm
25946
0444
edit
dl
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Module::Build::Notes.3pm
4690
0444
edit
dl
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Module::Build::Platform::aix.3pm
4472
0444
edit
dl
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Module::Build::Platform::cygwin.3pm
4505
0444
edit
dl
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Module::Build::Platform::darwin.3pm
4491
0444
edit
dl
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Module::Build::Platform::Default.3pm
4490
0444
edit
dl
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Module::Build::Platform::MacOS.3pm
5398
0444
edit
dl
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Module::Build::Platform::os2.3pm
4474
0444
edit
dl
rm
Module::Build::Platform::Unix.3pm
4481
0444
edit
dl
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Module::Build::Platform::VMS.3pm
7885
0444
edit
dl
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Module::Build::Platform::VOS.3pm
4477
0444
edit
dl
rm
Module::Build::Platform::Windows.3pm
4529
0444
edit
dl
rm
Module::Build::PPMMaker.3pm
4886
0444
edit
dl
rm
Mozilla::CA.3pm
3571
0444
edit
dl
rm
Net::CIDR::Lite.3pm
9562
0444
edit
dl
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Net::Cmd.3pm
11545
0444
edit
dl
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Net::Config.3pm
8100
0444
edit
dl
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Net::Domain.3pm
3835
0444
edit
dl
rm
Net::FTP.3pm
27341
0444
edit
dl
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Net::FTP::dataconn.3pm
3979
0444
edit
dl
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Net::HTTP.3pm
16375
0444
edit
dl
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Net::HTTP::NB.3pm
5394
0444
edit
dl
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Net::HTTPS.3pm
5438
0444
edit
dl
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Net::IP.3pm
27697
0444
edit
dl
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Net::libnetFAQ.3pm
14746
0444
edit
dl
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Net::Netrc.3pm
6729
0444
edit
dl
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Net::NNTP.3pm
23193
0444
edit
dl
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Net::POP3.3pm
12259
0444
edit
dl
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Net::SMTP.3pm
18880
0444
edit
dl
rm
Net::SSLeay.3pm
349350
0444
edit
dl
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Net::SSLeay::Handle.3pm
9127
0444
edit
dl
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Net::Time.3pm
4524
0444
edit
dl
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ok.3pm
2851
0444
edit
dl
rm
Parse::CPAN::Meta.3pm
10187
0444
edit
dl
rm
POD2::DE::local::lib.3pm
22879
0444
edit
dl
rm
POD2::PT_BR::local::lib.3pm
22762
0444
edit
dl
rm
Socket.3pm
34078
0444
edit
dl
rm
Sub::Identify.3pm
5087
0444
edit
dl
rm
SUPER.3pm
7394
0444
edit
dl
rm
Switch.3pm
19014
0444
edit
dl
rm
TAP::Base.3pm
3401
0444
edit
dl
rm
TAP::Formatter::Base.3pm
6233
0444
edit
dl
rm
TAP::Formatter::Color.3pm
3717
0444
edit
dl
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TAP::Formatter::Console.3pm
2722
0444
edit
dl
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TAP::Formatter::Console::ParallelSession.3pm
3065
0444
edit
dl
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TAP::Formatter::Console::Session.3pm
2832
0444
edit
dl
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TAP::Formatter::File.3pm
2693
0444
edit
dl
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TAP::Formatter::File::Session.3pm
2847
0444
edit
dl
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TAP::Formatter::Session.3pm
3603
0444
edit
dl
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TAP::Harness.3pm
21300
0444
edit
dl
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TAP::Harness::Beyond.3pm
19118
0444
edit
dl
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TAP::Harness::Env.3pm
5467
0444
edit
dl
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TAP::Object.3pm
4497
0444
edit
dl
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TAP::Parser.3pm
42210
0444
edit
dl
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TAP::Parser::Aggregator.3pm
8023
0444
edit
dl
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TAP::Parser::Grammar.3pm
8647
0444
edit
dl
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TAP::Parser::Iterator.3pm
4993
0444
edit
dl
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TAP::Parser::Iterator::Array.3pm
3771
0444
edit
dl
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TAP::Parser::Iterator::Process.3pm
4601
0444
edit
dl
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TAP::Parser::Iterator::Stream.3pm
3712
0444
edit
dl
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TAP::Parser::IteratorFactory.3pm
6904
0444
edit
dl
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TAP::Parser::Multiplexer.3pm
4646
0444
edit
dl
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TAP::Parser::Result.3pm
7512
0444
edit
dl
rm
TAP::Parser::Result::Bailout.3pm
3293
0444
edit
dl
rm
TAP::Parser::Result::Comment.3pm
3118
0444
edit
dl
rm
TAP::Parser::Result::Plan.3pm
4173
0444
edit
dl
rm
TAP::Parser::Result::Pragma.3pm
3073
0444
edit
dl
rm
TAP::Parser::Result::Test.3pm
7114
0444
edit
dl
rm
TAP::Parser::Result::Unknown.3pm
2973
0444
edit
dl
rm
TAP::Parser::Result::Version.3pm
3154
0444
edit
dl
rm
TAP::Parser::Result::YAML.3pm
3086
0444
edit
dl
rm
TAP::Parser::ResultFactory.3pm
5523
0444
edit
dl
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TAP::Parser::Scheduler.3pm
8113
0444
edit
dl
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TAP::Parser::Scheduler::Job.3pm
4301
0444
edit
dl
rm
TAP::Parser::Scheduler::Spinner.3pm
3346
0444
edit
dl
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TAP::Parser::Source.3pm
8170
0444
edit
dl
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TAP::Parser::SourceHandler.3pm
7559
0444
edit
dl
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TAP::Parser::SourceHandler::Executable.3pm
5297
0444
edit
dl
rm
TAP::Parser::SourceHandler::File.3pm
4567
0444
edit
dl
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TAP::Parser::SourceHandler::Handle.3pm
4425
0444
edit
dl
rm
TAP::Parser::SourceHandler::Perl.3pm
6262
0444
edit
dl
rm
TAP::Parser::SourceHandler::RawTAP.3pm
4434
0444
edit
dl
rm
TAP::Parser::YAMLish::Reader.3pm
3995
0444
edit
dl
rm
TAP::Parser::YAMLish::Writer.3pm
4879
0444
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/usr/local/share/man/man3/XML::SAX::Intro.3pm
(20220B)
.\" Automatically generated by Pod::Man 2.27 (Pod::Simple 3.28) .\" .\" Standard preamble: .\" ======================================================================== .de Sp \" Vertical space (when we can't use .PP) .if t .sp .5v .if n .sp .. .de Vb \" Begin verbatim text .ft CW .nf .ne \\$1 .. .de Ve \" End verbatim text .ft R .fi .. .\" Set up some character translations and predefined strings. \*(-- will .\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left .\" double quote, and \*(R" will give a right double quote. \*(C+ will .\" give a nicer C++. Capital omega is used to do unbreakable dashes and .\" therefore won't be available. \*(C` and \*(C' expand to `' in nroff, .\" nothing in troff, for use with C<>. .tr \(*W- .ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p' .ie n \{\ . ds -- \(*W- . ds PI pi . if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch . if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch . ds L" "" . ds R" "" . ds C` "" . ds C' "" 'br\} .el\{\ . ds -- \|\(em\| . ds PI \(*p . ds L" `` . ds R" '' . ds C` . ds C' 'br\} .\" .\" Escape single quotes in literal strings from groff's Unicode transform. .ie \n(.g .ds Aq \(aq .el .ds Aq ' .\" .\" If the F register is turned on, we'll generate index entries on stderr for .\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index .\" entries marked with X<> in POD. Of course, you'll have to process the .\" output yourself in some meaningful fashion. .\" .\" Avoid warning from groff about undefined register 'F'. .de IX .. .nr rF 0 .if \n(.g .if rF .nr rF 1 .if (\n(rF:(\n(.g==0)) \{ . if \nF \{ . de IX . tm Index:\\$1\t\\n%\t"\\$2" .. . if !\nF==2 \{ . nr % 0 . nr F 2 . \} . \} .\} .rr rF .\" .\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2). .\" Fear. Run. Save yourself. No user-serviceable parts. . \" fudge factors for nroff and troff .if n \{\ . ds #H 0 . ds #V .8m . ds #F .3m . ds #[ \f1 . ds #] \fP .\} .if t \{\ . ds #H ((1u-(\\\\n(.fu%2u))*.13m) . ds #V .6m . ds #F 0 . ds #[ \& . ds #] \& .\} . \" simple accents for nroff and troff .if n \{\ . ds ' \& . ds ` \& . ds ^ \& . ds , \& . ds ~ ~ . ds / .\} .if t \{\ . ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u" . ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u' . ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u' . ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u' . ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u' . ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u' .\} . \" troff and (daisy-wheel) nroff accents .ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V' .ds 8 \h'\*(#H'\(*b\h'-\*(#H' .ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#] .ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H' .ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u' .ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#] .ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#] .ds ae a\h'-(\w'a'u*4/10)'e .ds Ae A\h'-(\w'A'u*4/10)'E . \" corrections for vroff .if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u' .if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u' . \" for low resolution devices (crt and lpr) .if \n(.H>23 .if \n(.V>19 \ \{\ . ds : e . ds 8 ss . ds o a . ds d- d\h'-1'\(ga . ds D- D\h'-1'\(hy . ds th \o'bp' . ds Th \o'LP' . ds ae ae . ds Ae AE .\} .rm #[ #] #H #V #F C .\" ======================================================================== .\" .IX Title "SAX::Intro 3" .TH SAX::Intro 3 "2009-10-10" "perl v5.16.3" "User Contributed Perl Documentation" .\" For nroff, turn off justification. Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .nh .SH "NAME" XML::SAX::Intro \- An Introduction to SAX Parsing with Perl .SH "Introduction" .IX Header "Introduction" \&\s-1XML::SAX\s0 is a new way to work with \s-1XML\s0 Parsers in Perl. In this article we'll discuss why you should be using \s-1SAX,\s0 why you should be using \&\s-1XML::SAX,\s0 and we'll see some of the finer implementation details. The text below assumes some familiarity with callback, or push based parsing, but if you are unfamiliar with these techniques then a good place to start is Kip Hampton's excellent series of articles on \s-1XML\s0.com. .SH "Replacing XML::Parser" .IX Header "Replacing XML::Parser" The de-facto way of parsing \s-1XML\s0 under perl is to use Larry Wall and Clark Cooper's XML::Parser. This module is a Perl and \s-1XS\s0 wrapper around the expat \s-1XML\s0 parser library by James Clark. It has been a hugely successful project, but suffers from a couple of rather major flaws. Firstly it is a proprietary \s-1API,\s0 designed before the \s-1SAX API\s0 was conceived, which means that it is not easily replaceable by other streaming parsers. Secondly it's callbacks are subrefs. This doesn't sound like much of an issue, but unfortunately leads to code like: .PP .Vb 6 \& sub handle_start { \& my ($e, $el, %attrs) = @_; \& if ($el eq \*(Aqfoo\*(Aq) { \& $e\->{inside_foo}++; # BAD! $e is an XML::Parser::Expat object. \& } \& } .Ve .PP As you can see, we're using the \f(CW$e\fR object to hold our state information, which is a bad idea because we don't own that object \- we didn't create it. It's an internal object of XML::Parser, that happens to be a hashref. We could all too easily overwrite XML::Parser internal state variables by using this, or Clark could change it to an array ref (not that he would, because it would break so much code, but he could). .PP The only way currently with XML::Parser to safely maintain state is to use a closure: .PP .Vb 2 \& my $state = MyState\->new(); \& $parser\->setHandlers(Start => sub { handle_start($state, @_) }); .Ve .PP This closure traps the \f(CW$state\fR variable, which now gets passed as the first parameter to your callback. Unfortunately very few people use this technique, as it is not documented in the XML::Parser \s-1POD\s0 files. .PP Another reason you might not want to use XML::Parser is because you need some feature that it doesn't provide (such as validation), or you might need to use a library that doesn't use expat, due to it not being installed on your system, or due to having a restrictive \s-1ISP.\s0 Using \s-1SAX\s0 allows you to work around these restrictions. .SH "Introducing SAX" .IX Header "Introducing SAX" \&\s-1SAX\s0 stands for the Simple \s-1API\s0 for \s-1XML.\s0 And simple it really is. Constructing a \s-1SAX\s0 parser and passing events to handlers is done as simply as: .PP .Vb 2 \& use XML::SAX; \& use MySAXHandler; \& \& my $parser = XML::SAX::ParserFactory\->parser( \& Handler => MySAXHandler\->new \& ); \& \& $parser\->parse_uri("foo.xml"); .Ve .PP The important concept to grasp here is that \s-1SAX\s0 uses a factory class called XML::SAX::ParserFactory to create a new parser instance. The reason for this is so that you can support other underlying parser implementations for different feature sets. This is one thing that XML::Parser has always sorely lacked. .PP In the code above we see the parse_uri method used, but we could have equally well called parse_file, parse_string, or \fIparse()\fR. Please see XML::SAX::Base for what these methods take as parameters, but don't be fooled into believing parse_file takes a filename. No, it takes a file handle, a glob, or a subclass of IO::Handle. Beware. .PP \&\s-1SAX\s0 works very similarly to XML::Parser's default callback method, except it has one major difference: rather than setting individual callbacks, you create a new class in which to recieve the callbacks. Each callback is called as a method call on an instance of that handler class. An example will best demonstrate this: .PP .Vb 2 \& package MySAXHandler; \& use base qw(XML::SAX::Base); \& \& sub start_document { \& my ($self, $doc) = @_; \& # process document start event \& } \& \& sub start_element { \& my ($self, $el) = @_; \& # process element start event \& } .Ve .PP Now, when we instantiate this as above, and parse some \s-1XML\s0 with this as the handler, the methods start_document and start_element will be called as method calls, so this would be the equivalent of directly calling: .PP .Vb 1 \& $object\->start_element($el); .Ve .PP Notice how this is different to XML::Parser's calling style, which calls: .PP .Vb 1 \& start_element($e, $name, %attribs); .Ve .PP It's the difference between function calling and method calling which allows you to subclass \s-1SAX\s0 handlers which contributes to \s-1SAX\s0 being a powerful solution. .PP As you can see, unlike XML::Parser, we have to define a new package in which to do our processing (there are hacks you can do to make this uneccessary, but I'll leave figuring those out to the experts). The biggest benefit of this is that you maintain your own state variable ($self in the above example) thus freeing you of the concerns listed above. It is also an improvement in maintainability \- you can place the code in a separate file if you wish to, and your callback methods are always called the same thing, rather than having to choose a suitable name for them as you had to with XML::Parser. This is an obvious win. .PP \&\s-1SAX\s0 parsers are also very flexible in how you pass a handler to them. You can use a constructor parameter as we saw above, or we can pass the handler directly in the call to one of the parse methods: .PP .Vb 4 \& $parser\->parse(Handler => $handler, \& Source => { SystemId => "foo.xml" }); \& # or... \& $parser\->parse_file($fh, Handler => $handler); .Ve .PP This flexibility allows for one parser to be used in many different scenarios throughout your script (though one shouldn't feel pressure to use this method, as parser construction is generally not a time consuming process). .SH "Callback Parameters" .IX Header "Callback Parameters" The only other thing you need to know to understand basic \s-1SAX\s0 is the structure of the parameters passed to each of the callbacks. In XML::Parser, all parameters are passed as multiple options to the callbacks, so for example the Start callback would be called as my_start($e, \f(CW$name\fR, \f(CW%attributes\fR), and the \s-1PI\s0 callback would be called as my_processing_instruction($e, \f(CW$target\fR, \f(CW$data\fR). In \s-1SAX,\s0 every callback is passed a hash reference, containing entries that define our \&\*(L"node\*(R". The key callbacks and the structures they receive are: .SS "start_element" .IX Subsection "start_element" The start_element handler is called whenever a parser sees an opening tag. It is passed an element structure consisting of: .IP "LocalName" 4 .IX Item "LocalName" The name of the element minus any namespace prefix it may have come with in the document. .IP "NamespaceURI" 4 .IX Item "NamespaceURI" The \s-1URI\s0 of the namespace associated with this element, or the empty string for none. .IP "Attributes" 4 .IX Item "Attributes" A set of attributes as described below. .IP "Name" 4 .IX Item "Name" The name of the element as it was seen in the document (i.e. including any prefix associated with it) .IP "Prefix" 4 .IX Item "Prefix" The prefix used to qualify this element's namespace, or the empty string if none. .PP The \fBAttributes\fR are a hash reference, keyed by what we have called \&\*(L"James Clark\*(R" notation. This means that the attribute name has been expanded to include any associated namespace \s-1URI,\s0 and put together as {ns}name, where \*(L"ns\*(R" is the expanded namespace \s-1URI\s0 of the attribute if and only if the attribute had a prefix, and \*(L"name\*(R" is the LocalName of the attribute. .PP The value of each entry in the attributes hash is another hash structure consisting of: .IP "LocalName" 4 .IX Item "LocalName" The name of the attribute minus any namespace prefix it may have come with in the document. .IP "NamespaceURI" 4 .IX Item "NamespaceURI" The \s-1URI\s0 of the namespace associated with this attribute. If the attribute had no prefix, then this consists of just the empty string. .IP "Name" 4 .IX Item "Name" The attribute's name as it appeared in the document, including any namespace prefix. .IP "Prefix" 4 .IX Item "Prefix" The prefix used to qualify this attribute's namepace, or the empty string if none. .IP "Value" 4 .IX Item "Value" The value of the attribute. .PP So a full example, as output by Data::Dumper might be: .PP .Vb 1 \& .... .Ve .SS "end_element" .IX Subsection "end_element" The end_element handler is called either when a parser sees a closing tag, or after start_element has been called for an empty element (do note however that a parser may if it is so inclined call characters with an empty string when it sees an empty element. There is no simple way in \s-1SAX\s0 to determine if the parser in fact saw an empty element, a start and end element with no content.. .PP The end_element handler receives exactly the same structure as start_element, minus the Attributes entry. One must note though that it should not be a reference to the same data as start_element receives, so you may change the values in start_element but this will not affect the values later seen by end_element. .SS "characters" .IX Subsection "characters" The characters callback may be called in serveral circumstances. The most obvious one is when seeing ordinary character data in the markup. But it is also called for text in a \s-1CDATA\s0 section, and is also called in other situations. A \s-1SAX\s0 parser has to make no guarantees whatsoever about how many times it may call characters for a stretch of text in an \&\s-1XML\s0 document \- it may call once, or it may call once for every character in the text. In order to work around this it is often important for the \s-1SAX\s0 developer to use a bundling technique, where text is gathered up and processed in one of the other callbacks. This is not always necessary, but it is a worthwhile technique to learn, which we will cover in XML::SAX::Advanced (when I get around to writing it). .PP The characters handler is called with a very simple structure \- a hash reference consisting of just one entry: .IP "Data" 4 .IX Item "Data" The text data that was received. .SS "comment" .IX Subsection "comment" The comment callback is called for comment text. Unlike with \&\f(CW\*(C`characters()\*(C'\fR, the comment callback *must* be invoked just once for an entire comment string. It receives a single simple structure \- a hash reference containing just one entry: .IP "Data" 4 .IX Item "Data" The text of the comment. .SS "processing_instruction" .IX Subsection "processing_instruction" The processing instruction handler is called for all processing instructions in the document. Note that these processing instructions may appear before the document root element, or after it, or anywhere where text and elements would normally appear within the document, according to the \s-1XML\s0 specification. .PP The handler is passed a structure containing just two entries: .IP "Target" 4 .IX Item "Target" The target of the processing instrcution .IP "Data" 4 .IX Item "Data" The text data in the processing instruction. Can be an empty string for a processing instruction that has no data element. For example <?wiggle?> is a perfectly valid processing instruction. .SH "Tip of the iceberg" .IX Header "Tip of the iceberg" What we have discussed above is really the tip of the \s-1SAX\s0 iceberg. And so far it looks like there's not much of interest to \s-1SAX\s0 beyond what we have seen with XML::Parser. But it does go much further than that, I promise. .PP People who hate Object Oriented code for the sake of it may be thinking here that creating a new package just to parse something is a waste when they've been parsing things just fine up to now using procedural code. But there's reason to all this madness. And that reason is \s-1SAX\s0 Filters. .PP As you saw right at the very start, to let the parser know about our class, we pass it an instance of our class as the Handler to the parser. But now imagine what would happen if our class could also take a Handler option, and simply do some processing and pass on our data further down the line? That in a nutshell is how \s-1SAX\s0 filters work. It's Unix pipes for the 21st century! .PP There are two downsides to this. Number 1 \- writing \s-1SAX\s0 filters can be tricky. If you look into the future and read the advanced tutorial I'm writing, you'll see that Handler can come in several shapes and sizes. So making sure your filter does the right thing can be tricky. Secondly, constructing complex filter chains can be difficult, and simple thinking tells us that we only get one pass at our document, when often we'll need more than that. .PP Luckily though, those downsides have been fixed by the release of two very cool modules. What's even better is that I didn't write either of them! .PP The first module is XML::SAX::Base. This is a \s-1VITAL SAX\s0 module that acts as a base class for all \s-1SAX\s0 parsers and filters. It provides an abstraction away from calling the handler methods, that makes sure your filter or parser does the right thing, and it does it \s-1FAST.\s0 So, if you ever need to write a \s-1SAX\s0 filter, which if you're processing \s-1XML \-\s0> \s-1XML,\s0 or \s-1XML \-\s0> \s-1HTML,\s0 then you probably do, then you need to be writing it as a subclass of XML::SAX::Base. Really \- this is advice not to ignore lightly. I will not go into the details of writing a \s-1SAX\s0 filter here. Kip Hampton, the author of XML::SAX::Base has covered this nicely in his article on \s-1XML\s0.com here <\s-1URI\s0>. .PP To construct \s-1SAX\s0 pipelines, Barrie Slaymaker, a long time Perl hacker whose modules you will probably have heard of or used, wrote a very clever module called XML::SAX::Machines. This combines some really clever \s-1SAX\s0 filter-type modules, with a construction toolkit for filters that makes building pipelines easy. But before we see how it makes things easy, first lets see how tricky it looks to build complex \s-1SAX\s0 filter pipelines. .PP .Vb 4 \& use XML::SAX::ParserFactory; \& use XML::Filter::Filter1; \& use XML::Filter::Filter2; \& use XML::SAX::Writer; \& \& my $output_string; \& my $writer = XML::SAX::Writer\->new(Output => \e$output_string); \& my $filter2 = XML::SAX::Filter2\->new(Handler => $writer); \& my $filter1 = XML::SAX::Filter1\->new(Handler => $filter2); \& my $parser = XML::SAX::ParserFactory\->parser(Handler => $filter1); \& \& $parser\->parse_uri("foo.xml"); .Ve .PP This is a lot easier with XML::SAX::Machines: .PP .Vb 1 \& use XML::SAX::Machines qw(Pipeline); \& \& my $output_string; \& my $parser = Pipeline( \& XML::SAX::Filter1 => XML::SAX::Filter2 => \e$output_string \& ); \& \& $parser\->parse_uri("foo.xml"); .Ve .PP One of the main benefits of XML::SAX::Machines is that the pipelines are constructed in natural order, rather than the reverse order we saw with manual pipeline construction. XML::SAX::Machines takes care of all the internals of pipe construction, providing you at the end with just a parser you can use (and you can re-use the same parser as many times as you need to). .PP Just a final tip. If you ever get stuck and are confused about what is being passed from one \s-1SAX\s0 filter or parser to the next, then Devel::TraceSAX will come to your rescue. This perl debugger plugin will allow you to dump the \s-1SAX\s0 stream of events as it goes by. Usage is really very simple just call your perl script that uses \s-1SAX\s0 as follows: .PP .Vb 1 \& $ perl \-d:TraceSAX <scriptname> .Ve .PP And preferably pipe the output to a pager of some sort, such as more or less. The output is extremely verbose, but should help clear some issues up. .SH "AUTHOR" .IX Header "AUTHOR" Matt Sergeant, matt@sergeant.org .PP \&\f(CW$Id\fR$
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