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    <p>Looking at the <a href="http://jamesabbottdd.com/examples/testfile.csv">file in question</a>:</p> <pre class="lang-none prettyprint-override"><code> $ curl -s http://jamesabbottdd.com/examples/testfile.csv | xxd | head -n3 0000000: fffe 4300 6100 6d00 7000 6100 6900 6700 ..C.a.m.p.a.i.g. 0000010: 6e00 0900 4300 7500 7200 7200 6500 6e00 n...C.u.r.r.e.n. 0000020: 6300 7900 0900 4200 7500 6400 6700 6500 c.y...B.u.d.g.e. </code></pre> <p>The <a href="http://en.wikipedia.org/wiki/Byte_order_mark">byte order mark<code>ffee</code> at the start</a> suggests the file encoding is little endian UTF-16, and the <code>00</code> bytes at every other position back this up.</p> <p>This would suggest that you should be able to do this:</p> <pre class="lang-ruby prettyprint-override"><code>CSV.foreach('./testfile.csv', :encoding =&gt; 'utf-16le') do |row| ... </code></pre> <p>However that gives me <code>invalid byte sequence in UTF-16LE (ArgumentError)</code> coming from <a href="https://github.com/ruby/ruby/blob/v2_0_0_353/lib/csv.rb#L1985">inside the CSV library</a>. I <em>think</em> this is due to <a href="http://ruby-doc.org/core-2.0.0/IO.html#method-i-gets">IO#gets</a> only returning a single byte for some reason when faced with the BOM when <a href="https://github.com/ruby/ruby/blob/v2_0_0_353/lib/csv.rb#L1978">called in CSV</a>, resulting in the invalid UTF-16.</p> <p>You can get CSV to strip of the BOM, by using <code>bom|utf-16-le</code> as the encoding:</p> <pre><code>CSV.foreach('./testfile.csv', :encoding =&gt; 'bom|utf-16le') do |row| ... </code></pre> <p>You might prefer to convert the string to a more familiar encoding instead, in which case you could do:</p> <pre><code>CSV.foreach('./testfile.csv', :encoding =&gt; 'utf-16le:utf-8') do |row| ... </code></pre> <p>Both of these appear to work okay.</p>
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    1. CONot only spot on, but very educational as well. Top job - thanks!
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