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    <p>In pseudo-code, given:</p> <ul> <li><p><i>input</i>: A string, first character is <i>input</i>[0]; last character is <i>input</i>[<i>length</i>]. Further, assume one dummy character, <i>input</i>[<i>length</i>+1]. It can be anything except <code>;</code> and <code>"</code>. This string is one line of the "CSV" file.</p></li> <li><p><i>length</i>: positive integer, number of characters in <i>input</i></p></li> </ul> <p>Do this:</p> <ul> <li><p>set <i>start</i> = 0</p></li> <li><p>if <i>input</i>[0] = <code>';'</code>:</p> <ul> <li><p>you have a blank field in the beginning; do whatever with it</p></li> <li><p>set start = 2</p></li> </ul></li> <li><p>endif</p></li> <li><p>for each <i>c</i> between 1 and <i>length</i>:</p> <ul> <li><p>next iteration unless <i>string</i>[<i>c</i>] = <code>';'</code></p></li> <li><p>if input[c-1] ≠ <code>'"'</code> or input[c+1] ≠ <code>'"'</code>: &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<strong>// test for escape sequence <code>";"</code></strong></p> <ul> <li><p>found field consting of half-open range [start,c); do whatever with it. Note that in the case of empty fields, start≥c, leaving an empty range</p></li> <li><p>set start = c+1</p></li> </ul></li> <li><p>endif</p></li> </ul></li> <li><p>end foreach</p></li> </ul> <p>Untested, of course. Debugging code like this is always fun….</p> <p>The special case of <i>input</i>[0] is to make sure we don't ever look at <i>input[-1]</i>. If you can make <i>input[-1]</i> safe, then you can get rid of that special case. You can also put a dummy character in <i>input</i>[0] and then start your data—and your parsing—from <i>input</i>[1].</p>
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    1. POFunny CSV format help
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    1. COOh, that's very nice.
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