extracting linksfrom arbitrary html perl amp lwp

... #!/usr/local/bin /perl use LWP: :Simple; use HTML: :Parse; use HTML: :Element; use URI::URL; $html = get $ARGV[0]; $parsed _html = HTML: :Parse::parse _html( $html) ; for (@{ $parsed _html- >extract_links( ... used by LWP $parsed _html = HTML: :Parse::parse _html( $html) ; Here, the parse _html( ) function returns an instance of the HTML: :TreeBuilder class that contains the parsed HTML data Since the HTML: :TreeBuilder ... it: #!/usr/local/bin /perl use LWP: :Simple; use HTML: :Parse; use HTML: :Element; $html = get $ARGV[0]; $parsed _html = HTML: :Parse::parse _html( $html) ; for (@{ $parsed _html- >extract_links( ) }) { $link...

Ngày tải lên: 24/10/2013, 08:15

... collection when you're done with an HTML parse tree.[4] HTML: :Parse (superceded by HTML: :Parser after LWP 5.2.2.) parse _html( $html, [$obj]) Given a scalar variable containing HTML as a first parameter, ... HTML: :FormatText The HTML: :FormatText module converts an HTML parse tree into text $formatter = new HTML: :FormatText Creates a new HTML: :FormatText object $formatter->format( $html) Given an HTML ... returned by HTML: :Parse::parse _html( ), this method returns a text version of the HTML HTML::FormatPS The HTML: :FormatPS module converts an HTML parse tree into PostScript $formatter = new HTML: :FormatPS(parameter,...

Ngày tải lên: 24/10/2013, 08:15

... "$absolute_link\n"; } $parsed _html- >delete( ); # manually garbage collection } sub print_hyperlinks { my ($data, $model) = @_; my $parsed _html= HTML::Parse::parse _html( $data); for (@{ $parsed _html- >extract_links(qw ... in url # process the URL here } } But in LWP, this simplifies to something like this: my $parsed _html= HTML::Parse::parse _html( $data); for (@{ $parsed _html- >extract_links(qw (body img)) }) { my ... grep out hyperlink references only -p use this proxy server Example: $0 -p http://proxy:8080/ http://www.ora.com HELP } The get _html( ) routine is defined next The response of get _html( ) is...

Ngày tải lên: 28/10/2013, 15:15

... # if not HTML, don't bother to search it for URLs next if ($response->header('Content-Type') !~ m@text /html@ ); # it is text /html, get the entity-body this time $request->method('GET'); ... $response>header('Content-Type'); # if not HTML, don't bother to search it for URLs next if ($response->header('Content-Type') !~ m@text /html@ ); # it is text /html, get the entity-body this time $request->method('GET'); ... grab_urls( $html_ content) returns an array of links that are referenced # from within the html , and Covers , # This includes a little more functionality than the # HTML: :Element::extract_links(...

Ngày tải lên: 28/10/2013, 15:15

... site: PerlModule HTML: :Mason::ApacheHandler SetHandler perl- script PerlHandler HTML: :Mason::ApacheHandler This tells Apache that all files ending in html ... component inheritance, we can rewrite Example 1-4 through Example 1-6 in a more common Mason idiom, as shown in Example 1-7 and Example 1-8 Example 1-7 autohandler Welcome to Wally ... or, if you're building mod _perl too, you can just let mod _perl build and install Apache for you • mod _perl You can get mod _perl from http:/ /perl. apache.org/dist/ mod _perl follows the standard...

Ngày tải lên: 14/12/2013, 12:15

... Perl line A single line of Perl code < %perl> Perl block Perl code Component A call to another component, possibly with call arguments init block Perl code that executes before the main ... the HTML: :Mason::Interp module in a recent release of Mason for details Embedded Perl: % Lines and < %perl> Blocks There are two ways to embed Perl code into text with Mason The first, the Perl ... few lines of Perl code in a row, however, it is probably best to use a Perl block instead A Perl block is equivalent to a bunch of Perl lines in a row It begins with the start tag < %perl> and ends...

Ngày tải lên: 14/12/2013, 12:15

... $r Mason's special hooks into mod _perl are covered in Chapter Sample Component The component shown in Example 2-1 is part of our sample site and the focus of Chapter The component here is responsible ... value can be any Perl expression whose results can fit into a scalar (such as a number, string, reference, or undef ) As in the block, the syntax in these blocks looks like Perl, but it ... for the Perl code to exist on separate lines Mason therefore provides the ability to get rid of a newline simply by preceding it with a backslash ( \ ) If we rewrote the preceding example with...

Ngày tải lên: 14/12/2013, 12:15

... way to this (see Example 3-3 and Example 3-4) Example 3-3 /autohandler Example.com % $m->call_next; Home < /html> $dbh ... file that looks something like this: DocumentRoot /home/httpd /html SetHandler perl- script PerlHandler HTML: :Mason::ApacheHandler This directive has ... Example 3-1 /autohandler Example.com % $m->call_next; Home < /html> Example 3-2 /welcome .html Welcome to a very wonderful site...

Ngày tải lên: 14/12/2013, 12:15

... component For example, if your wrapper chain looks like this: /autohandler /tasks/autohandler /tasks/show_task .html this method would return the component object representing /tasks/show_task .html Note ... of these methods corresponds to a method in the HTML: :Mason::Exception class, such as as_text() or as_line() You can create your own method in the HTML: :Mason::Exception namespace, such as as_you_wish(), ... expected to return a string containing the formatted error message In a mod _perl or CGI environment, this defaults to html format Otherwise, the default is text • error_mode This may be either...

Ngày tải lên: 14/12/2013, 12:15

... under mod _perl with the HTML: :Mason::ApacheHandler class, which is covered in Chapter 7, the Request object will contain several additional methods • ah This method returns the current HTML: :Mason::ApacheHandler ... available when using the HTML: :Mason::ApacheHandler or HTML: :Mason::CGIHandler classes The latter class is covered in Chapter • cgi_object This method is always available when using HTML: :Mason::CGIHandler ... plain old HTML: :Mason::Buffer objects to the stack That wouldn't achieve much But if you were to create a custom buffer subclass, you might want to selectively stick one onto the stack For example,...

Ngày tải lên: 14/12/2013, 12:15

... arguments when you invoke them Example 5-3 and Example 5-4 demonstrate a more sophisticated example of method invocation Example 5-3 /autohandler % $m->call_next; < /html> ... attribute is a Perl scalar variable, not a Mason component Example 5-7 and Example 5-8 rewrite our previous autohandler example using attributes instead of methods Example 5-7 autohandler -home- < /html> www.Example.com Welcome to Example.com Example 5-6 fancy_page .html This page isn't all that...

Ngày tải lên: 14/12/2013, 12:15

... named bob .html, as shown in the example below: I am in current_comp->name %> content %> we would expect the output to be: I AM IN BOB .HTML And ... just show by example: my $ah = HTML: :Mason::ApacheHandler->new( comp_root => [ [main => '/usr/http/docs'], [util => '/usr/http/mason-util'], ] ); or, in an Apache configuration file: PerlSetVar MasonCompRoot ... to run predefined SQL queries via a Mason component interface For example, you might use the component as in Example 5-9 Example 5-9 A calling component Part NumberQuantityPriceTotal...

Ngày tải lên: 14/12/2013, 12:15

... an Apache configuration file: PerlSetVar MasonAllowGlobals $dbh PerlAddVar MasonAllowGlobals %session The allow_globals parameter can be used effectively with the Perl local() function in an autohandler ... href="emotion .html? emotion=">Visit your place! • use_strict By default, all components will be run under Perl' s strict pragma, which forces you to declare any Perl ... in_package The code written in < %perl> sections (or other component sections that contain Perl code) must be compiled in the context of some package, and the default package is HTML: :Mason::Commands To...

Ngày tải lên: 14/12/2013, 12:15

... www.example.com /home/example/htdocs/ PerlSetVar MasonCompRoot /home/example/htdocs PerlSetVar MasonDataDir /home/example/mason- data SetHandler perl- script PerlHandler HTML: :Mason::ApacheHandler ... AddType text /html mhtml SetHandler perl- script PerlHandler HTML: :Mason::ApacheHandler The first directive tells Apache that files ending with mhtml have ... virtual hosting example to use an external script: PerlRequire handler.pl ServerName www.example.com SetHandler perl- script PerlHandler MyMason::MyApp...

Ngày tải lên: 14/12/2013, 12:15

... $class->alter_superclass( $HTML: :Mason::ApacheHandler::VERSION ? 'HTML: :Mason::Request::ApacheHandler' : $HTML: :Mason::CGIHandler::VERSION ? 'HTML: :Mason::Request::CGI' : 'HTML: :Mason::Request' ); ... package HTML: :Mason::Resolver::MySQL; $VERSION = '0.01'; use strict; use DBI; use Params::Validate qw(:all); use HTML: :Mason::ComponentSource; use HTML: :Mason::Resolver; use base qw (HTML: :Mason::Resolver); ... $VERSION = '0.01'; use strict; use HTML: :Mason::Lexer; use HTML: :Mason::Exceptions ( abbr => [qw(syntax_error)] ); use HTML: :Mason::Compiler; use base qw (HTML: :Mason::Compiler); This pulls in...

Ngày tải lên: 21/01/2014, 06:20

... extracting from bookmark files: 6.5 Example: Extracting Linksfrom a Bookmark File from remote files: 6.6 Example: Extracting Linksfrom Arbitrary HTML link-checking spider example: 12.3.5 Link Extraction ... remote files: 6.6 Example: Extracting Linksfrom Arbitrary HTML meta tags: 3.4.8 Advanced Methods parsing: 1.5.3 Parsing HTML HTML entities decode_entities( ): 7.2.3 Text Tokens HTML forms data extraction: ... to Trees libwww -perl project: 1.2 History of LWP license plate example: 5.5 POST Example: License Plates link-checking spider example: 12.3 Example: A Link-Checking Spider links extracting from...

Ngày tải lên: 17/03/2014, 17:20

... extracting from bookmark files: 6.5 Example: Extracting Linksfrom a Bookmark File from remote files: 6.6 Example: Extracting Linksfrom Arbitrary HTML link-checking spider example: 12.3.5 Link Extraction ... remote files: 6.6 Example: Extracting Linksfrom Arbitrary HTML meta tags: 3.4.8 Advanced Methods parsing: 1.5.3 Parsing HTML HTML entities decode_entities( ): 7.2.3 Text Tokens HTML forms data extraction: ... to Trees libwww -perl project: 1.2 History of LWP license plate example: 5.5 POST Example: License Plates link-checking spider example: 12.3 Example: A Link-Checking Spider links extracting from...

Ngày tải lên: 23/03/2014, 00:20

... 6.5 Example: Extracting Linksfrom a Bookmark File Section 6.6 Example: Extracting Linksfrom Arbitrary HTML Section 6.7 Example: Extracting Temperatures from Weather Underground Chapter HTML Processing ... all the Perl skills you need to use this book If you're new to Perl, consider reading Learning Perl (O'Reilly) and maybe also The Perl Cookbook (O'Reilly) If your HTML is shaky, try the HTML Pocket ... non-beta release of libwww -perl for Perl It was called release 5.00 because it was for Perl This made some room for Roy to maintain libwww -perl for Perl 4, called libwww -perl- 0.40 Martijn continued...

Ngày tải lên: 29/04/2014, 14:45

... phần tử HTML (HTML element) Một tài liệu HTML tạo nên từ nhiều thành phần HTML Một thành phần HTML được đánh dấu bằng một cặp thẻ mở và thẻ đóng Các thành phần HTML có ... Trang mã nguồn HTML trang Web 14 I.4.2 Các thẻ HTML 15 I.4.3 Các quy tắc chung 16 I.4.4 Cấu trúc tài liệu HTML .17 I.4.5 Các phần tử HTML (HTML element) ... cục, HTML ngày trở nên phức tạp hoàn thiện để đáp ứng yêu cầu nảy sinh trình phát triển (như âm thanh, hình ảnh động, v.v…) Người ta gọi phiên HTML đánh số để biểu thị HTML 2, HTML 2+, HTML 3,…...

Ngày tải lên: 15/08/2012, 11:24

... "text/CSS"> { : } { : } { : } Trong đó: - - thẻ mà ... with C HTML, DHTML and JavaScript Dream Weaver < /html> Chương V: Tạo xử lý tầng (Layer) Mục tiêu chương giúp người học có thể:  Thay đổi thuộc tính phần tử HTML có kiện ... trang HTML với JavaScript .17 Chương IV: Định dạng phần tử HTML CSS 26 Chương V: Tạo xử lý tầng (Layer) 36 Chương VI: Nội dung động định vị động 42 Chương 0: Tạo phần tử HTML...

Ngày tải lên: 18/08/2012, 11:00