I want to match specific parts (bold) in the following strings:
我想在以下字符串中匹配特定部分(粗体):
- \doc doc1,doc2
- \doc doc1,doc2 \in filed1,field2
- \doc doc1,doc2 \in filed1,field2 \doc doc3,doc4 \in field3,field4
\ doc doc1,doc2 \ in filed1,field2
\ doc doc1,doc2 \ in filed1,field2 \ doc doc3,doc4 \ in field3,field4
I came out with this regex /\\doc(.*?)\\in/g https://regex101.com/r/dV7mF4/1
我出来了这个正则表达式/\\doc(.*?)\\in/g https://regex101.com/r/dV7mF4/1
But it doesn't match the first string doc1,doc2. What do I need to add to my regex to match all these strings above?
但它与第一个字符串doc1,doc2不匹配。我需要添加到我的正则表达式以匹配上面的所有这些字符串?
2 个解决方案
#1
1
You may use an alternation in the positive lookahead to set the context:
您可以在正向前瞻中使用替换来设置上下文:
\\doc(.*?)(?=$|\\in)
^^^^^^^^^^
See the regex demo
请参阅正则表达式演示
The (?=$|\\in) will allow .*? to match up to the end of string (the $ branch) or up to the first \in (the second branch).
(?= $ | \\ in)将允许。*?匹配到字符串的结尾($ branch)或直到第一个\ in(第二个分支)。
As an alternative, you may just specify you want to match anything but \in after \doc:
作为替代方案,您可以在\ doc之后指定除了\ in之外的任何内容:
\\doc([^\\]*(?:\\(?!in)[^\\]*)*)
See this regex demo
看到这个正则表达式演示
Here, [^\\]*(?:\\(?!in)[^\\]*)* matches zero or more characters other than \, then 0+ sequences of \ not followed with in and followed with 0+ characters other than \. Basically, any text that is not \in.
这里,[^ \\] *(?:\\(?!in)[^ \\] *)*匹配除\之外的零个或多个字符,然后是0+序列\ not后跟in,后跟0+除\之外的字符。基本上,任何不是\的文本。
#2
1
Change your regex expression to : /\\doc(.*?)(?:\\in|\s)/g
将你的正则表达式改为:/\\doc(。*?)(?:\\ in | \)/ g
演示和解释
#1
1
You may use an alternation in the positive lookahead to set the context:
您可以在正向前瞻中使用替换来设置上下文:
\\doc(.*?)(?=$|\\in)
^^^^^^^^^^
See the regex demo
请参阅正则表达式演示
The (?=$|\\in) will allow .*? to match up to the end of string (the $ branch) or up to the first \in (the second branch).
(?= $ | \\ in)将允许。*?匹配到字符串的结尾($ branch)或直到第一个\ in(第二个分支)。
As an alternative, you may just specify you want to match anything but \in after \doc:
作为替代方案,您可以在\ doc之后指定除了\ in之外的任何内容:
\\doc([^\\]*(?:\\(?!in)[^\\]*)*)
See this regex demo
看到这个正则表达式演示
Here, [^\\]*(?:\\(?!in)[^\\]*)* matches zero or more characters other than \, then 0+ sequences of \ not followed with in and followed with 0+ characters other than \. Basically, any text that is not \in.
这里,[^ \\] *(?:\\(?!in)[^ \\] *)*匹配除\之外的零个或多个字符,然后是0+序列\ not后跟in,后跟0+除\之外的字符。基本上,任何不是\的文本。
#2
1
Change your regex expression to : /\\doc(.*?)(?:\\in|\s)/g
将你的正则表达式改为:/\\doc(。*?)(?:\\ in | \)/ g
演示和解释