我实质上是试图替换大文本中的所有脚注。在Objective-C中我有很多种原因,所以请假设这个约束。RegexKitLite:匹配表达式 - >匹配除了] - > Match]
每个脚注众生本:[脚注
每个脚注只能到此为止:]
可以有这两种标记物,包括换行符之间不惜一切代价。但是,他们之间永远不会有]。
所以,基本上我想匹配[脚注,然后匹配任何东西除外],直到]匹配。
这是最接近我已经能够去确定所有脚注:使用正则表达式设法找出八百八十九分之七百八十零脚注
NSString *regexString = @"[\\[][F][o][o][t][n][o][t][e][^\\]\n]*[\\]]";
。它似乎也没有一个是虚假警报。似乎错过的只有那些有断行符的脚注。
我在www.regular-expressions.info上花了很长时间,特别是在关于点的页面上(http://www.regular-expressions.info/dot.html)。这有助于我创建上面的正则表达式,但我还没有真正想出如何包含任何字符或换行符,除了右括号。
使用下面的正则表达式,而不是设法捕捉所有脚注的,但它抓住了太多的文字,因为*是贪婪:(?s)[\\[][F][o][o][t][n][o][t][e].*[\\]]
下面是一些示例文本的正则表达式上运行:
<p id="id00082">[Footnote 1: In the history of Florence in the early part of the XVIth century <i>Piero di Braccio Martelli</i> is frequently mentioned as <i>Commissario della Signoria</i>. He was famous for his learning and at his death left four books on Mathematics ready for the press; comp. LITTA, <i>Famiglie celebri Italiane</i>, <i>Famiglia Martelli di Firenze</i>.—In the Official Catalogue of MSS. in the Brit. Mus., New Series Vol. I., where this passage is printed, <i>Barto</i> has been wrongly given for Braccio.</p>
<p id="id00083">2. <i>addi 22 di marzo 1508</i>. The Christian era was computed in Florence at that time from the Incarnation (Lady day, March 25th). Hence this should be 1509 by our reckoning.</p>
<p id="id00084">3. <i>racolto tratto di molte carte le quali io ho qui copiate</i>. We must suppose that Leonardo means that he has copied out his own MSS. and not those of others. The first thirteen leaves of the MS. in the Brit. Mus. are a fair copy of some notes on physics.]</p>
<p id="id00085">Suggestions for the arrangement of MSS treating of particular subjects.(5-8).</p>
When you put together the science of the motions of water, remember to include under each proposition its application and use, in order that this science may not be useless.--
[Footnote 2: A comparatively small portion of Leonardo's notes on water-power was published at Bologna in 1828, under the title: "_Del moto e misura dell'Acqua, di L. da Vinci_".]
在这个例子中有两个脚注和一些非脚注文本。正如你所看到的,第一个脚注包含两个换行符。第二个不包含换行符。
上面提到的第一个正则表达式将在本示例文本中捕获脚注2,但它不会捕获脚注1,因为它包含换行符。
对我的正则表达式的任何改进都将非常感谢。
这似乎工作。它匹配883次,但它取代了所有的脚注(889),所以显然有6次它吞没了两个脚注而不是一个脚注。也许有三个嵌套的脚注?我需要一段时间才能找到它们。 这为什么有效?我不明白[^ \\]] *是如何工作的。不应该只是寻找以右括号开头的行吗?我认为^角色应该“在一行的开头匹配”。 – 2010-12-03 21:14:19