problems installing HTML::Tree

7stud has asked for the wisdom of the Perl Monks concerning the following question:

Dear Monks,

I want to do some html parsing, but I am having problems installing HTML::Tree on mac osx 10.4.11. Is there another module I should use instead? The output from my failed install was lengthy, so I am including just parts of it:

$ perl -v
This is perl, v5.10.1 (*) built for darwin-2level-thread-multi

$ sudo perl -MCPAN -e shell
Terminal does not support AddHistory.

cpan shell -- CPAN exploration and modules installation (v1.9402)
Enter 'h' for help.

cpan[1]> install HTML::Tree

...
....
...

Running make test
PERL_DL_NONLAZY=1 /usr/local/bin/perl "-MExtUtils::Command::MM" "-e" "
+test_harness(0, 'blib/lib', 'blib/arch')" t/*.t
t/00system.t ........ 1/2 
#   Failed test 'use HTML::TreeBuilder;'
#   at t/00system.t line 7.
#     Tried to use 'HTML::TreeBuilder'.
#     Error:  Can't load '/usr/local/lib/perl5/site_perl/5.10.1/darwin
+-2level/auto/HTML/Parser/Parser.bundle' for module HTML::Parser: dlop
+en(/usr/local/lib/perl5/site_perl/5.10.1/darwin-2level/auto/HTML/Pars
+er/Parser.bundle, 2): Symbol not found: _PL_sv_undef
#   Referenced from: /usr/local/lib/perl5/site_perl/5.10.1/darwin-2lev
+el/auto/HTML/Parser/Parser.bundle
#   Expected in: dynamic lookup

....

#   Failed test 'use HTML::TreeBuilder;'
#   at t/doctype.t line 7.

#   Failed test 'use HTML::Element;'

#   Failed test 'use HTML::Parse;'
#   at t/oldparse.t line 7.

....


Test Summary Report
-------------------
t/00system.t      (Wstat: 512 Tests: 2 Failed: 2)
  Failed tests:  1-2
  Non-zero exit status: 2
t/assubs.t        (Wstat: 2304 Tests: 0 Failed: 0)
  Non-zero exit status: 9
  Parse errors: No plan found in TAP output
t/attributes.t    (Wstat: 2304 Tests: 0 Failed: 0)
  Non-zero exit status: 9
  Parse errors: Bad plan.  You planned 1 tests but ran 0.
t/body.t          (Wstat: 65280 Tests: 1 Failed: 1)
  Failed test:  1
  Non-zero exit status: 255
  Parse errors: Bad plan.  You planned 11 tests but ran 1.
t/building.t      (Wstat: 65280 Tests: 1 Failed: 1)
  Failed test:  1
  Non-zero exit status: 255
  Parse errors: Bad plan.  You planned 39 tests but ran 1.
t/children.t      (Wstat: 65280 Tests: 1 Failed: 1)
  Failed test:  1
  Non-zero exit status: 255
  Parse errors: Bad plan.  You planned 4 tests but ran 1.
t/clonei.t        (Wstat: 65280 Tests: 1 Failed: 1)
  Failed test:  1
  Non-zero exit status: 255
  Parse errors: Bad plan.  You planned 4 tests but ran 1.
t/construct_tree.t (Wstat: 65280 Tests: 1 Failed: 1)
  Failed test:  1
  Non-zero exit status: 255
  Parse errors: Bad plan.  You planned 59 tests but ran 1.
t/doctype.t       (Wstat: 65280 Tests: 1 Failed: 1)
  Failed test:  1
  Non-zero exit status: 255
  Parse errors: Bad plan.  You planned 5 tests but ran 1.
t/escape.t        (Wstat: 65280 Tests: 1 Failed: 1)
  Failed test:  1
  Non-zero exit status: 255
  Parse errors: Bad plan.  You planned 21 tests but ran 1.
t/oldparse.t      (Wstat: 65280 Tests: 1 Failed: 1)
  Failed test:  1
  Non-zero exit status: 255
  Parse errors: Bad plan.  You planned 17 tests but ran 1.
t/parse.t         (Wstat: 2304 Tests: 0 Failed: 0)
  Non-zero exit status: 9
  Parse errors: Bad plan.  You planned 40 tests but ran 0.
t/parsefile.t     (Wstat: 6400 Tests: 1 Failed: 1)
  Failed test:  1
  Non-zero exit status: 25
  Parse errors: Bad plan.  You planned 5 tests but ran 1.
t/split.t         (Wstat: 65280 Tests: 1 Failed: 1)
  Failed test:  1
  Non-zero exit status: 255
  Parse errors: Bad plan.  You planned 445 tests but ran 1.
t/tag-rendering.t (Wstat: 65280 Tests: 1 Failed: 1)
  Failed test:  1
  Non-zero exit status: 255
  Parse errors: Bad plan.  You planned 8 tests but ran 1.
t/unicode.t       (Wstat: 2304 Tests: 0 Failed: 0)
  Non-zero exit status: 9
  Parse errors: Bad plan.  You planned 11 tests but ran 0.
Files=17, Tests=13,  2 wallclock secs ( 0.09 usr  0.09 sys +  0.62 cus
+r  0.19 csys =  0.99 CPU)
Result: FAIL
Failed 16/17 test programs. 13/13 subtests failed.
make: *** [test_dynamic] Error 9
  PETEK/HTML-Tree-3.23.tar.gz
  /usr/bin/make test -- NOT OK
//hint// to see the cpan-testers results for installing this module, t
+ry:
  reports PETEK/HTML-Tree-3.23.tar.gz
Running make install
  make test had returned bad status, won't install without force
Failed during this command:
 PETEK/HTML-Tree-3.23.tar.gz                  : make_test NO
[download]

Comment on problems installing HTML::Tree Download Code

Replies are listed 'Best First'.
Re: problems installing HTML::Tree by Corion (Patriarch) on May 08, 2010 at 14:32 UTC
`# Error: Can't load '/usr/local/lib/perl5/site_perl/5.10.1/darwin +-2level/auto/HTML/Parser/Parser.bundle' for module HTML::Parser: dlop +en(/usr/local/lib/perl5/site_perl/5.10.1/darwin-2level/auto/HTML/Pars +er/Parser.bundle, 2): Symbol not found: _PL_sv_undef # Referenced from: /usr/local/lib/perl5/site_perl/5.10.1/darwin-2lev +el/auto/HTML/Parser/Parser.bundle # Expected in: dynamic lookup` [download] This makes me think that the error is more with HTML::Parser. How did you install HTML::Parser? It seems as if Perl finds a version of HTML::Parser compiled for another (older?) version of Perl.	[reply] [d/l]
Re^2: problems installing HTML::Tree by 7stud (Deacon) on May 08, 2010 at 15:07 UTC
How did you install HTML::Parser? I didn't. Normally, when I install a module from cpan, it installs all the prerequisites. Am I supposed to already have certain modules installed? Which ones? How would I know that?	[reply]
Re^3: problems installing HTML::Tree by Anonymous Monk on May 08, 2010 at 15:41 UTC
You see after `cpan[1]> install HTML::Tree` see all those `...`? Thats when all that happens, when it tells you what you're missing (it doesn't actually check to see that its not broken, just present).	[reply] [d/l] [select]
Re^4: problems installing HTML::Tree by 7stud (Deacon) on May 08, 2010 at 19:35 UTC
Re: problems installing HTML::Tree by Jeffrey Kegler (Hermit) on May 09, 2010 at 16:17 UTC
You might want to look at Marpa-HTML, which also does high-level HTML parsing using a new parsing algorithm. As the author of Marpa-HTML I am biased, but I use Marpa-HTML for my own work. I think you may find its interface handy and that the power of the underlying Marpa algorithm pays off in this application.	[reply]
Re^2: problems installing HTML::Tree by metaperl (Curate) on May 10, 2010 at 15:45 UTC
ou might want to look at Marpa-HTML the docs for Marpa::HTML look very similar to Marpa::UrHTML. How do those 2 packages differ? also, it looks like Marpa::HTML is focused on parsing and a bit of tree transformation. an example of complex HTML rendering (such as a zebra table with 3 different "stripes") would be interesting. Also, how do you output the final document as HTML when done? Is there a method similar to `->as_HTML` in TreeBuilder? The mantra of every experienced web application developer is the same: thou shalt separate business logic from display. Ironically, almost all template engines allow violation of this separation principle, which is the very impetus for HTML template engine development. -- Terence Parr, "Enforcing Strict Model View Separation in Template Engines"	[reply] [d/l]
Re^3: problems installing HTML::Tree by Jeffrey Kegler (Hermit) on May 16, 2010 at 04:08 UTC
Marpa-HTML is derived from, and replaces Marpa::UrHTML. For an example of how to output the HTML, look at the `html_fmt` utility which is part of the Marpa-HTML distribution. Warning: `html_fmt` is primarily intended to pretty-print HTML for reading. This keeps it pretty simple. I find most of the time the HTML output also renders the same as the input, but you can't rely on that. I'll look into providing an equivalent to `as_HTML()`. Transforming a table with zebra striping might be a good example for me to add. I'll also look into that.	[reply]