I m 采用《2010年视觉基本原理》,用XML文档进行编辑。 我想用一个零取代(典型的)非零浮动点数的项目。
开始:
<Body RelArmLen="1.234" RelLegLen="-9.876" RelWaist="-3.14159">
结束:
<Body RelArmLen="1.234" RelLegLen="0" RelWaist="-3.14159">
这些数字可能或可能不会开始――(主要)并且可能在数字的任一方面有任何数字。 如果起点值为零,则该数值可能或不一定为“0”或“0.0”或“0.00”。 无任何数值为+;缺乏——意味着积极。
(这个问题似乎涉及引文;我可以将其与RelLegLen=“前引书”和“RelLegLen=”之间的一切相匹配,而不只是属于RelLegLen的报价之间的浮动)
感谢!
从未经常使用XML。 从来没有。 你错了。 例如,一些拟议的“解决方案”将不能与使用单一报价作为限定词的特性相匹配,而是将“被引出”与在案文节点内出现的援引的特性相匹配。
This is an ideal candidate for XSLT, especially XSLT 2.0 which has regular expression support. Find the attributes you want to process with a template rule, then use the XPath 2.0 expression "castable as xs:double" to test if the format is floating point.
请你这样做:
RelLegLen="[^"]*"
似乎你们想要将RelLegLen的任何东西改变为零。
采用非电子配对:
/RelLegLen="(.*?)"/
这将从<代码>/RelLegLen=到下一个<编码>>>>。 该次表将包含你的浮标。
议题似乎已经完成,但也许有人会发现它很宝贵,即在2015年VS2015年,我用来寻找在扼杀和良好工作方面的硬编码数字:
"[-+]?d+(.d+)?"
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