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Re^2: Help With Online Table Scraper

by Anonymous Monk
on Mar 03, 2011 at 09:40 UTC ( #891181=note: print w/replies, xml ) Need Help??


in reply to Re: Help With Online Table Scraper
in thread Help With Online Table Scraper

Sinistral is right, use a documented API whenever available, scraping is a fragile PITA :)
#!/usr/bin/perl -- use strict; use warnings; use Data::Dumper; use Web::Scraper; use File::Slurp qw' read_file '; use URI; Main( @ARGV ); exit( 0 ); sub Main { my $uri = URI->new('http://finance.yahoo.com/q/ks?s=MNDO+Key+Stati +stics'); if(@_){ my $html_content = read_file( @_ ); ScrapePrint(\$html_content, $uri ); } else { ScrapePrint( $uri ); } } sub ScrapePrint { my $scraper = scraper { process q~//table[@id='yfncsumtab']/tr/td/table[8]//tr//tr~, 'Balance Sheet[]' => scraper { process '/tr/td[1]', 'key', 'TEXT'; process '/tr/td[2]', 'value', 'TEXT'; }, process #~ q~//table[@id='yfncsumtab']/tr/td/table[9]//tr//tr~, q~//table[@id='yfncsumtab']//table[9]//table//tr~, 'Cash Flow Statement[]' => scraper { process '/tr/td[1]', 'key', 'TEXT'; process '/tr/td[2]', 'value', 'TEXT'; }, process q~//table[@id='yfncsumtab']/tr[2]/td[3]/table[4]//tr//tr~, 'Dividends & Splits[]' => scraper { process '/tr/td[1]', 'key', 'TEXT'; process '/tr/td[2]', 'value', 'TEXT'; }, process q~//table[@id='yfncsumtab']/tr/td/table[4]//tr//tr~, 'Fiscal Year[]' => scraper { process '/tr/td[1]', 'key', 'TEXT'; process '/tr/td[2]', 'value', 'TEXT'; }, process q~//table[@id='yfncsumtab']/tr/td/table[7]//tr//tr~, 'Income Statement[]' => scraper { process '/tr/td[1]', 'key', 'TEXT'; process '//tr/td[2]', 'value.', 'TEXT'; }, process q~//table[@id='yfncsumtab']/tr/td/table[6]//tr//tr~, 'Management Effectiveness[]' => scraper { process '/tr/td[1]', 'key', 'TEXT'; process '/tr/td[2]', 'value', 'TEXT'; }, process q~//table[@id='yfncsumtab']/tr/td/table[5]//tr//tr~, 'Profitability[]' => scraper { process '/tr/td[1]', 'key', 'TEXT'; process '/tr/td[2]', 'value', 'TEXT'; }, process q~//table[@id='yfncsumtab']/tr/td[3]/table[3]//tr//tr~, 'Share Statistics[]' => scraper { process '/tr/td[1]', 'key', 'TEXT'; process '/tr/td[2]', 'value', 'TEXT'; }, process q~//table[@id='yfncsumtab']/tr[2]/td[3]/table[2]/tr//tr~, 'Stock Price History[]' => scraper { process '/tr/td[1]', 'key', 'TEXT'; process '/tr/td[2]', 'value', 'TEXT'; }, process q~//table[@id='yfncsumtab']/tr[2]/td/table[2]/tr/td/table/ +tr~, 'Valuation Measures[]' => scraper { process '/tr/td[1]', 'key', 'TEXT'; process '/tr/td[2]', 'value', 'TEXT'; }, }; my $res = $scraper->scrape( @_ ); print Data::Dumper->new([ $res ])->Sortkeys(1)->Dump; } __END__ $VAR1 = { ... 'Cash Flow Statement' => [ { 'key' => 'Cash Flow Statement' }, { 'key' => 'Operating Cash Flow (ttm):', 'value' => '6.30M' }, { 'key' => 'Levered Free Cash Flow (ttm):', 'value' => '3.66M' } ], ...
Come to think of it, Web::Scraper might be also be a bit of a PITA, but I've only studied the trivial examples, not the others

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[tye]: We use auditd for security monitoring. So we can rely on auditing being enabled. I'm not sure who would want to not be able to audit. Maybe some VM inside another system with audit?
[SuicideJunkie]: spies would want a system to not be able to audit.
[erix]: spies should use a type-writer, no power needed, no auditable

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