度、分和秒正则表达式 [英] Degrees, Minutes and seconds regex
问题描述
我需要使用 RegEx 验证十六进制值,例如:24° 12' 55,4" 或 32° 24' 15,4".
I need validate with RegEx an sexagecimal value, for example: 24° 12' 55,4" or 32° 24' 15,4".
现在,我有下一个正则表达式,匹配成功的度数和分钟数:
For now, I have the next RegEx, that matches successful with degrees and minutes:
^([0-8][0-9]|[9][0])°\s([0-4][0-9]|[5][9])'$
但是,当添加秒验证器时有问题:
But, when add the seconds validator have problems:
^([0-8][0-9]|[9][0])°\s([0-4][0-9]|[5][9])'\s([0-4][0-9]|[5][9],[0-9])''$
我是 RegEx 的新手,有什么想法吗?
I'm new with RegEx, any ideas?
推荐答案
首先,你有一些冗余:
^([0-8][0-9]|[9][0])°\s([0-4][0-9]|[5][9])'$
可以变成:
^([0-8][0-9]|90)°\s([0-4][0-9]|59)'$
接下来,您遇到了一个逻辑问题,在您的第二场比赛中,您先匹配 0-4,然后匹配 0-9(即 00-49),然后只匹配 59.您可以将其更改为:
Next you have a logical issue, in your second match, you're matching 0-4 then 0-9 (ie 00-49) and then matching just 59. You can change this to:
^([0-8][0-9]|90)°\s[0-5][0-9]'$
匹配 00-59
接下来让我们看看你的秒修改:
Next let's look at your seconds modification:
\s([0-4][0-9]|[5][9],[0-9])''$
和以前一样的问题,除了现在你添加了一个小数,但不是在 | 的两边.所以它只会在一侧匹配,如果我们像修复最后一个一样修复它:
Same issue as before, except now you've added a decimal, but not to both sides of the | so it will only match on one side, if we fix this like we fixed the last one we get:
^([0-8][0-9]|90)°\s[0-5][0-9]'\s[0-5][0-9],[0-9]''$
接下来你有两个单引号而不是双引号,所以解决这个问题:
Next you have two single quotes instead of a double quote, so fix that:
^([0-8][0-9]|90)°\s([0-5][0-9])'\s[0-5][0-9],[0-9]"$
现在我们需要问自己,这个数字是强制性的吗?可能不会.因此,使用 ?
Now we need to ask ourselves, is the first digit on this mandatory? Probably not. So mark it as potentially missing using a ?
^([0-8]?[0-9]|90)°\s[0-5]?[0-9]'\s[0-5]?[0-9],[0-9]"$
接下来,第二个小数部分是必填的吗?可能不会,所以将其标记为可能丢失:
Next, is the fractional part of the second mandatory? Probably not, so mark it as potentially missing:
^([0-8]?[0-9]|90)°\s[0-5]?[0-9]'\s[0-5]?[0-9](,[0-9])?"$
最后,我假设除了学位以外的每个部分都不是必需的,将它们标记为可能缺失:
Finally, I'm assuming that each part except for the degrees is not required, mark them as potentially missing:
^([0-8]?[0-9]|90)°(\s[0-5]?[0-9]')?(\s[0-5]?[0-9](,[0-9])?")?$
您还可以采取其他措施来改善这种情况.但是,这应该会让你开始.
There's other things you can do to make this better. But, this should get you started.
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