Created
June 13, 2012 02:17
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pre diff html
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| # coding: utf-8 | |
| require 'rubygems' | |
| require 'erb' | |
| require 'differ' | |
| MyFormat = Differ::Format::HTML.clone | |
| module MyFormat | |
| class << self | |
| private | |
| def as_change(change) | |
| as_delete(change) << "\n" << as_insert(change) | |
| end | |
| end | |
| end | |
| def diff(prev_text, new_text) | |
| prev, new = ERB::Util.h(prev_text), ERB::Util.h(new_text) | |
| differ = Differ.diff_by_line(prev, new) | |
| differ.format_as MyFormat | |
| end | |
| def diff_html(prev_text, new_text) | |
| String.new(<<-HTML) | |
| <html> | |
| <head> | |
| <title>diff</title> | |
| <style> | |
| ins.differ { | |
| background: #cfc; | |
| } | |
| del.differ { | |
| background: #fcc; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <h1>diff</h1> | |
| <pre class="diff"> | |
| #{diff(prev_text, new_text)} | |
| </pre> | |
| </body> | |
| </html> | |
| HTML | |
| end | |
| if __FILE__ == $0 | |
| a =<<-EOL | |
| いろはにほへと | |
| ちりぬるをわか | |
| よたれそつねな | |
| らむうゐのおく | |
| やまけふこえて | |
| あさきゆめみし | |
| ゑひもせす | |
| EOL | |
| b =<<-EOL | |
| いろはにほへど | |
| ちりぬるをわが | |
| よたれぞつねな | |
| らむうゐのおく | |
| やまけふこえて | |
| あさきゆめみじ | |
| ゑひもせず | |
| EOL | |
| print diff_html(a, b) | |
| end |
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| <html> | |
| <head> | |
| <title>diff</title> | |
| <style> | |
| ins.differ { | |
| background: #cfc; | |
| } | |
| del.differ { | |
| background: #fcc; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <h1>diff</h1> | |
| <pre class="diff"> | |
| <del class="differ">いろはにほへど | |
| ちりぬるをわが | |
| よたれぞつねな</del> | |
| <ins class="differ">いろはにほへと | |
| ちりぬるをわか | |
| よたれそつねな</ins> | |
| らむうゐのおく | |
| やまけふこえて | |
| <del class="differ">あさきゆめみじ | |
| ゑひもせず</del> | |
| <ins class="differ">あさきゆめみし | |
| ゑひもせす</ins> | |
| </pre> | |
| </body> | |
| </html> |
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