Regex match the keyword everywhere except inside a URL
How can I create a regex that will match the keyword "politics" everywhere except for in the URL below? I am trying to use a negative lookahead.
The string is a paragraph of text that looks like this:
politics are good.
http://www.foxnews.com/politics/2018/09/07/omarosa-plans-another-tape-release-next-week-report.html
politics are bad.
I want to the 1st and 3rd matches, but not the second, which is part of a URL.
javascript regex
edited Nov 16 '18 at 4:12
benvc
6,0941827
asked Nov 15 '18 at 18:45
JasonJason
3982622
add a comment |
How can I create a regex that will match the keyword "politics" everywhere except for in the URL below? I am trying to use a negative lookahead.
The string is a paragraph of text that looks like this:
politics are good.
http://www.foxnews.com/politics/2018/09/07/omarosa-plans-another-tape-release-next-week-report.html
politics are bad.
I want to the 1st and 3rd matches, but not the second, which is part of a URL.
javascript regex
edited Nov 16 '18 at 4:12
benvc
6,0941827
asked Nov 15 '18 at 18:45
JasonJason
3982622
What is your regex tool?
– anubhava
Nov 15 '18 at 18:49
The stack programming seems to be raising to next level, where people tend to ask for solution without trying
– PeterM
Nov 15 '18 at 19:49
add a comment |
How can I create a regex that will match the keyword "politics" everywhere except for in the URL below? I am trying to use a negative lookahead.
The string is a paragraph of text that looks like this:
politics are good.
http://www.foxnews.com/politics/2018/09/07/omarosa-plans-another-tape-release-next-week-report.html
politics are bad.
I want to the 1st and 3rd matches, but not the second, which is part of a URL.
javascript regex
edited Nov 16 '18 at 4:12
benvc
6,0941827
asked Nov 15 '18 at 18:45
JasonJason
3982622
How can I create a regex that will match the keyword "politics" everywhere except for in the URL below? I am trying to use a negative lookahead.
The string is a paragraph of text that looks like this:
politics are good.
http://www.foxnews.com/politics/2018/09/07/omarosa-plans-another-tape-release-next-week-report.html
politics are bad.
I want to the 1st and 3rd matches, but not the second, which is part of a URL.
javascript regex
javascript regex
edited Nov 16 '18 at 4:12
benvc
6,0941827
asked Nov 15 '18 at 18:45
JasonJason
3982622
edited Nov 16 '18 at 4:12
benvc
6,0941827
asked Nov 15 '18 at 18:45
JasonJason
3982622
edited Nov 16 '18 at 4:12
benvc
6,0941827
edited Nov 16 '18 at 4:12
benvc
6,0941827
edited Nov 16 '18 at 4:12
benvc
6,0941827
6,0941827
asked Nov 15 '18 at 18:45
JasonJason
3982622
asked Nov 15 '18 at 18:45
JasonJason
3982622
asked Nov 15 '18 at 18:45
JasonJason
3982622
3982622
What is your regex tool?
– anubhava
Nov 15 '18 at 18:49
The stack programming seems to be raising to next level, where people tend to ask for solution without trying
– PeterM
Nov 15 '18 at 19:49
add a comment |
What is your regex tool?
– anubhava
Nov 15 '18 at 18:49
The stack programming seems to be raising to next level, where people tend to ask for solution without trying
– PeterM
Nov 15 '18 at 19:49
What is your regex tool?
– anubhava
Nov 15 '18 at 18:49
What is your regex tool?
– anubhava
Nov 15 '18 at 18:49
The stack programming seems to be raising to next level, where people tend to ask for solution without trying
– PeterM
Nov 15 '18 at 19:49
The stack programming seems to be raising to next level, where people tend to ask for solution without trying
– PeterM
Nov 15 '18 at 19:49
add a comment |
2 Answers
2
active
oldest
votes
You can use a negative look behind (if your regex Tool supports it):
(?<!http:.*)politics
The regex uses a negative look behind (looking for: 'http:' followed by any char any number of times), then matches 'politics'.
This will skip matching if the line contains 'http:'.
answered Nov 15 '18 at 20:09
Poul BakPoul Bak
5,48831233
Throws an error. * A quantifier inside a lookbehind makes it non-fixed width regex101.com/r/XPxPGn/1
– Jason
Nov 16 '18 at 2:32
What regex Tool do you use (they are very different)?
– Poul Bak
Nov 16 '18 at 2:37
regex101.com. App will be using javascript.
– Jason
Nov 16 '18 at 2:41
Nevermind. It works! I hadn't selected javascript.
– Jason
Nov 16 '18 at 2:42
add a comment |
This would probably be a bit easier to do without regex at all using whatever programming language you are working with (i.e. probably easier to parse the text and ignore any strings that start with "http" and then just use string operators to match the specific text you are looking for).
That said, you could use a negative lookahead, as mentioned in your question, to exclude matches of the word when followed by a forward slash with any number of non-space characters in between. This will work if the url does not end in the word you are trying to match without a forward slash to follow. For example:
politics(?!S*/)
answered Nov 15 '18 at 18:51
benvcbenvc
6,0941827
The challenge is the word may not always be proceeded by a forward slash. It could be anywhere in the URL.
– Jason
Nov 15 '18 at 19:27
@Jason edited the answer with a version that will match the word if it is not followed by non-space characters and a forward slash (but this would match the word in a url if it was in a filename or at the end of a path that was not followed by a forward slash).
– benvc
Nov 15 '18 at 19:48
regex101.com/r/XPxPGn/2 Often times the word is in the filename.
– Jason
Nov 16 '18 at 2:39
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
You can use a negative look behind (if your regex Tool supports it):
(?<!http:.*)politics
The regex uses a negative look behind (looking for: 'http:' followed by any char any number of times), then matches 'politics'.
This will skip matching if the line contains 'http:'.
answered Nov 15 '18 at 20:09
Poul BakPoul Bak
5,48831233
Throws an error. * A quantifier inside a lookbehind makes it non-fixed width regex101.com/r/XPxPGn/1
– Jason
Nov 16 '18 at 2:32
What regex Tool do you use (they are very different)?
– Poul Bak
Nov 16 '18 at 2:37
regex101.com. App will be using javascript.
– Jason
Nov 16 '18 at 2:41
Nevermind. It works! I hadn't selected javascript.
– Jason
Nov 16 '18 at 2:42
add a comment |
You can use a negative look behind (if your regex Tool supports it):
(?<!http:.*)politics
The regex uses a negative look behind (looking for: 'http:' followed by any char any number of times), then matches 'politics'.
This will skip matching if the line contains 'http:'.
answered Nov 15 '18 at 20:09
Poul BakPoul Bak
5,48831233
Throws an error. * A quantifier inside a lookbehind makes it non-fixed width regex101.com/r/XPxPGn/1
– Jason
Nov 16 '18 at 2:32
What regex Tool do you use (they are very different)?
– Poul Bak
Nov 16 '18 at 2:37
regex101.com. App will be using javascript.
– Jason
Nov 16 '18 at 2:41
Nevermind. It works! I hadn't selected javascript.
– Jason
Nov 16 '18 at 2:42
add a comment |
You can use a negative look behind (if your regex Tool supports it):
(?<!http:.*)politics
The regex uses a negative look behind (looking for: 'http:' followed by any char any number of times), then matches 'politics'.
This will skip matching if the line contains 'http:'.
answered Nov 15 '18 at 20:09
Poul BakPoul Bak
5,48831233
You can use a negative look behind (if your regex Tool supports it):
(?<!http:.*)politics
The regex uses a negative look behind (looking for: 'http:' followed by any char any number of times), then matches 'politics'.
This will skip matching if the line contains 'http:'.
answered Nov 15 '18 at 20:09
Poul BakPoul Bak
5,48831233
answered Nov 15 '18 at 20:09
Poul BakPoul Bak
5,48831233
answered Nov 15 '18 at 20:09
Poul BakPoul Bak
5,48831233
answered Nov 15 '18 at 20:09
Poul BakPoul Bak
5,48831233
5,48831233
Throws an error. * A quantifier inside a lookbehind makes it non-fixed width regex101.com/r/XPxPGn/1
– Jason
Nov 16 '18 at 2:32
What regex Tool do you use (they are very different)?
– Poul Bak
Nov 16 '18 at 2:37
regex101.com. App will be using javascript.
– Jason
Nov 16 '18 at 2:41
Nevermind. It works! I hadn't selected javascript.
– Jason
Nov 16 '18 at 2:42
add a comment |
Throws an error. * A quantifier inside a lookbehind makes it non-fixed width regex101.com/r/XPxPGn/1
– Jason
Nov 16 '18 at 2:32
What regex Tool do you use (they are very different)?
– Poul Bak
Nov 16 '18 at 2:37
regex101.com. App will be using javascript.
– Jason
Nov 16 '18 at 2:41
Nevermind. It works! I hadn't selected javascript.
– Jason
Nov 16 '18 at 2:42
Throws an error. * A quantifier inside a lookbehind makes it non-fixed width regex101.com/r/XPxPGn/1
– Jason
Nov 16 '18 at 2:32
Throws an error. * A quantifier inside a lookbehind makes it non-fixed width regex101.com/r/XPxPGn/1
– Jason
Nov 16 '18 at 2:32
What regex Tool do you use (they are very different)?
– Poul Bak
Nov 16 '18 at 2:37
What regex Tool do you use (they are very different)?
– Poul Bak
Nov 16 '18 at 2:37
regex101.com. App will be using javascript.
– Jason
Nov 16 '18 at 2:41
regex101.com. App will be using javascript.
– Jason
Nov 16 '18 at 2:41
Nevermind. It works! I hadn't selected javascript.
– Jason
Nov 16 '18 at 2:42
Nevermind. It works! I hadn't selected javascript.
– Jason
Nov 16 '18 at 2:42
add a comment |
This would probably be a bit easier to do without regex at all using whatever programming language you are working with (i.e. probably easier to parse the text and ignore any strings that start with "http" and then just use string operators to match the specific text you are looking for).
That said, you could use a negative lookahead, as mentioned in your question, to exclude matches of the word when followed by a forward slash with any number of non-space characters in between. This will work if the url does not end in the word you are trying to match without a forward slash to follow. For example:
politics(?!S*/)
answered Nov 15 '18 at 18:51
benvcbenvc
6,0941827
The challenge is the word may not always be proceeded by a forward slash. It could be anywhere in the URL.
– Jason
Nov 15 '18 at 19:27
@Jason edited the answer with a version that will match the word if it is not followed by non-space characters and a forward slash (but this would match the word in a url if it was in a filename or at the end of a path that was not followed by a forward slash).
– benvc
Nov 15 '18 at 19:48
regex101.com/r/XPxPGn/2 Often times the word is in the filename.
– Jason
Nov 16 '18 at 2:39
add a comment |
This would probably be a bit easier to do without regex at all using whatever programming language you are working with (i.e. probably easier to parse the text and ignore any strings that start with "http" and then just use string operators to match the specific text you are looking for).
That said, you could use a negative lookahead, as mentioned in your question, to exclude matches of the word when followed by a forward slash with any number of non-space characters in between. This will work if the url does not end in the word you are trying to match without a forward slash to follow. For example:
politics(?!S*/)
answered Nov 15 '18 at 18:51
benvcbenvc
6,0941827
The challenge is the word may not always be proceeded by a forward slash. It could be anywhere in the URL.
– Jason
Nov 15 '18 at 19:27
@Jason edited the answer with a version that will match the word if it is not followed by non-space characters and a forward slash (but this would match the word in a url if it was in a filename or at the end of a path that was not followed by a forward slash).
– benvc
Nov 15 '18 at 19:48
regex101.com/r/XPxPGn/2 Often times the word is in the filename.
– Jason
Nov 16 '18 at 2:39
add a comment |
This would probably be a bit easier to do without regex at all using whatever programming language you are working with (i.e. probably easier to parse the text and ignore any strings that start with "http" and then just use string operators to match the specific text you are looking for).
That said, you could use a negative lookahead, as mentioned in your question, to exclude matches of the word when followed by a forward slash with any number of non-space characters in between. This will work if the url does not end in the word you are trying to match without a forward slash to follow. For example:
politics(?!S*/)
answered Nov 15 '18 at 18:51
benvcbenvc
6,0941827
This would probably be a bit easier to do without regex at all using whatever programming language you are working with (i.e. probably easier to parse the text and ignore any strings that start with "http" and then just use string operators to match the specific text you are looking for).
That said, you could use a negative lookahead, as mentioned in your question, to exclude matches of the word when followed by a forward slash with any number of non-space characters in between. This will work if the url does not end in the word you are trying to match without a forward slash to follow. For example:
politics(?!S*/)
answered Nov 15 '18 at 18:51
benvcbenvc
6,0941827
edited Nov 15 '18 at 19:53
answered Nov 15 '18 at 18:51
benvcbenvc
6,0941827
answered Nov 15 '18 at 18:51
benvcbenvc
6,0941827
answered Nov 15 '18 at 18:51
benvcbenvc
6,0941827
6,0941827
The challenge is the word may not always be proceeded by a forward slash. It could be anywhere in the URL.
– Jason
Nov 15 '18 at 19:27
@Jason edited the answer with a version that will match the word if it is not followed by non-space characters and a forward slash (but this would match the word in a url if it was in a filename or at the end of a path that was not followed by a forward slash).
– benvc
Nov 15 '18 at 19:48
regex101.com/r/XPxPGn/2 Often times the word is in the filename.
– Jason
Nov 16 '18 at 2:39
add a comment |
The challenge is the word may not always be proceeded by a forward slash. It could be anywhere in the URL.
– Jason
Nov 15 '18 at 19:27
@Jason edited the answer with a version that will match the word if it is not followed by non-space characters and a forward slash (but this would match the word in a url if it was in a filename or at the end of a path that was not followed by a forward slash).
– benvc
Nov 15 '18 at 19:48
regex101.com/r/XPxPGn/2 Often times the word is in the filename.
– Jason
Nov 16 '18 at 2:39
The challenge is the word may not always be proceeded by a forward slash. It could be anywhere in the URL.
– Jason
Nov 15 '18 at 19:27
The challenge is the word may not always be proceeded by a forward slash. It could be anywhere in the URL.
– Jason
Nov 15 '18 at 19:27
@Jason edited the answer with a version that will match the word if it is not followed by non-space characters and a forward slash (but this would match the word in a url if it was in a filename or at the end of a path that was not followed by a forward slash).
– benvc
Nov 15 '18 at 19:48
@Jason edited the answer with a version that will match the word if it is not followed by non-space characters and a forward slash (but this would match the word in a url if it was in a filename or at the end of a path that was not followed by a forward slash).
– benvc
Nov 15 '18 at 19:48
regex101.com/r/XPxPGn/2 Often times the word is in the filename.
– Jason
Nov 16 '18 at 2:39
regex101.com/r/XPxPGn/2 Often times the word is in the filename.
– Jason
Nov 16 '18 at 2:39
add a comment |
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What is your regex tool?
– anubhava
Nov 15 '18 at 18:49
The stack programming seems to be raising to next level, where people tend to ask for solution without trying
– PeterM
Nov 15 '18 at 19:49