Parsing table could be difficult when its structure contains colspan or rowspan. TableParser parser HTML tables, group them by columns, with colspan and rowspan respected.
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Nokogiri
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sudo gem install table_parser
Use TableParser::Table to create parsed HTML table.
For example, following code: html = “<html><body><table><tr><td>A</td><td>B</td></tr>\ <tr><td rowspan="2">1</td><td>2</td></tr> \ <tr><td>3</td></tr></table></body></html>” doc = Nokogiri::HTML(html) table = TableParser::Table.new doc, “/html/body/table”
Result in following parsed table:
Table<TableColumn<name=A, children=[1],[1]>,TableColumn<name=B, children=[2],[3]>>
Note the first column contains duplicated item, because the first row contains “rowspan” element. If this is not desired, use following syntax to skip duplication:
html = “<html><body><table><tr><td>A</td><td>B</td></tr>\ <tr><td rowspan="2">1</td><td>2</td></tr> \ <tr><td>3</td></tr></table></body></html>” doc = Nokogiri::HTML(html) table = TableParser::Table.new doc, “/html/body/table”, {:dup_rows => false})
Which result in following parsed table:
Table<TableColumn<name=A, children=[1]>,TableColumn<name=B, children=[2],[3]>>
Read the spec (test/test_table_parser.rb) for more usage.
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Francis Chong, francis at ignition dot hk
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