Hi guys,
I'm having some trouble figuring out how to do some regular expression
foo and thought maybe someone on here could help,
Basically i am trying to parse out special tags from html returned
from TinyMCE, and replace them with content for doing html to pdf
generation.
I've written a little gist page demonstrating what i need it to do:
http://gist.github.com/53383
i have got it working so far with 1 paragraph inside the if statement
(the first example), but when you have two content paragraphs, it
fails to match.
i have written some rspec tests for it, if anyone fancies having a go,
i've included my current regular expression, if you want to build on
that :)
Cheers,
Adam
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describe "Regular expression" do
before(:each) do
@regular_expression = /(<p>.*\{\{if[\s\w_\.><=\-\+\*\/&|]*?\}\}.*<\/p>\r?\n?<p>.*<\/p>\r?\n?<p>.*\{\{end\}\}.*<\/p>)\r?\n?/
end
it 'should match a single paragraph block statement' do
string = "<p>{{if something > something_else}}</p>\n<p>Show some content</p>\n<p>{{end}}</p>"
result = string.scan(@regular_expression)
result.size.should == 1
result.first.first.should == "<p>{{if something > something_else}}</p>\n<p>Show some content</p>\n<p>{{end}}</p>"
end
it 'should match a single paragraph block statement with a custom matcher in the content' do
string = "<p>{{if something > something_else}}</p>\n<p>Show some content, and a {{custom_matcher}}</p>\n<p>{{end}}</p>"
result = string.scan(@regular_expression)
result.size.should == 1
result.first.first.should == "<p>{{if something > something_else}}</p>\n<p>Show some content, and a {{custom_matcher}}</p>\n<p>{{end}}</p>"
end
it 'should match a single paragraph block statement with multiple nested html elements' do
string = "<p><span><span><span>{{if something > something_else}}</span></span></span></p>\n<p><span><span><span>Show some content</span></span></span></p>\n<p><span><span><span>{{end}}</span></span></span></p>"
result = string.scan(@regular_expression)
result.size.should == 1
result.first.first.should == "<p><span><span><span>{{if something > something_else}}</span></span></span></p>\n<p><span><span><span>Show some content</span></span></span></p>\n<p><span><span><span>{{end}}</span></span></span></p>"
end
it 'should match a double paragraph block statement' do
string = "<p>{{if something > something_else}}</p>\n<p>Show some content</p>\n<p>Show some more content</p>\n<p>{{end}}</p>"
result = string.scan(@regular_expression)
result.size.should == 1
result.first.first.should == "<p>{{if something > something_else}}</p>\n<p>Show some content</p>\n<p>Show some more content</p>\n<p>{{end}}</p>"
end
it 'should match a double paragraph block statement with extra html elements' do
string = "<p><span>{{if something > something_else}}</span></p>\n<p><strong>Show some content</strong></p>\n<p><strong>Show some more content</strong></p>\n<p><span>{{end}}</span></p>"
result = string.scan(@regular_expression)
result.size.should == 1
result.first.first.should == "<p><span>{{if something > something_else}}</span></p>\n<p><strong>Show some content</strong></p>\n<p><strong>Show some more content</strong></p>\n<p><span>{{end}}</span></p>"
end
it 'should match two double paragraph block staatements' do
string = "<p>{{if something > something_else}}</p>\n<p>Show some content</p>\n<p>Show some more content</p>\n<p>{{end}}</p>\n<p>{{if something_else > something_other}}</p>\n<p>Show some other content</p>\n<p>Show some other other content</p>\n<p>{{end}}</p>"
result = string.scan(@regular_expression)
result.size.should == 2
result[0].first.should == "<p>{{if something > something_else}}</p>\n<p>Show some content</p>\n<p>Show some more content</p>\n<p>{{end}}</p>"
result[1].first.should == "<p>{{if something_else > something_other}}</p>\n<p>Show some other content</p>\n<p>Show some other other content</p>\n<p>{{end}}</p>"
end
end
