Regex force group order
up vote
0
down vote
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I'm new in regex and I have a question.
Like in this example, https://regex101.com/r/Iak7cF/1/ how do I force
src="wow"
to be in group 1, and
title="toto"
to be in group 2?
I want to capture this kind of text in any order only if it contains:
class="formula"
Am I doing it right?
regex
edited Nov 10 at 16:38
Liam Strilchuk
12515
asked Nov 10 at 16:33
Plomging
62
add a comment |
up vote
0
down vote
favorite
I'm new in regex and I have a question.
Like in this example, https://regex101.com/r/Iak7cF/1/ how do I force
src="wow"
to be in group 1, and
title="toto"
to be in group 2?
I want to capture this kind of text in any order only if it contains:
class="formula"
Am I doing it right?
regex
edited Nov 10 at 16:38
Liam Strilchuk
12515
asked Nov 10 at 16:33
Plomging
62
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
I'm new in regex and I have a question.
Like in this example, https://regex101.com/r/Iak7cF/1/ how do I force
src="wow"
to be in group 1, and
title="toto"
to be in group 2?
I want to capture this kind of text in any order only if it contains:
class="formula"
Am I doing it right?
regex
edited Nov 10 at 16:38
Liam Strilchuk
12515
asked Nov 10 at 16:33
Plomging
62
I'm new in regex and I have a question.
Like in this example, https://regex101.com/r/Iak7cF/1/ how do I force
src="wow"
to be in group 1, and
title="toto"
to be in group 2?
I want to capture this kind of text in any order only if it contains:
class="formula"
Am I doing it right?
regex
regex
edited Nov 10 at 16:38
Liam Strilchuk
12515
asked Nov 10 at 16:33
Plomging
62
edited Nov 10 at 16:38
Liam Strilchuk
12515
asked Nov 10 at 16:33
Plomging
62
edited Nov 10 at 16:38
Liam Strilchuk
12515
edited Nov 10 at 16:38
Liam Strilchuk
12515
edited Nov 10 at 16:38
Liam Strilchuk
12515
12515
asked Nov 10 at 16:33
Plomging
62
asked Nov 10 at 16:33
Plomging
62
asked Nov 10 at 16:33
Plomging
62
62
add a comment |
add a comment |
2 Answers
2
active
oldest
votes
up vote
-1
down vote
accepted
You'd better use an HTML parser
But if you really want to use regex, you have to use named groups to achieve what you want.
<img(?=[^>]*class="formula")(?=.*(?<src>src=".*"))(?=.*(?<title>title=".*")).*>
DEMO
answered Nov 10 at 17:19
Toto
63.8k175697
No need to use named groups with this regex <img(?=[^>]*class="formula")(?=.*(src=".*"))(?=.*(title=".*")).*> src will be in group 1 and title in group 2
– Plomging
Nov 10 at 17:36
@Plomging: Yes, you're right, but it's clearer when you use the named groups.
– Toto
Nov 10 at 18:12
@downvoter, what's wrong with this answer?
– Toto
Nov 11 at 10:47
add a comment |
up vote
-1
down vote
Regular expressions are very flexible and powerful, but in general, they are not the right tool for parsing XML, HTML, or XHTML. From WinBatch:
Regular Expressions are only good for parsing text that is tightly defined. Since Regular Expressions don't really understand the context of matches, they can be fooled in a big way if the structure of the text changes. In particular, Regular Expressions have difficulty with hierarchy.
PerlMonks has a detailed explanation of why regex is not a good solution for all but the most simple of casess. They summarize it like this:
So I hope it is clear: Please, don't try to parse arbitrary XML/HTML with regexes!
answered Nov 10 at 17:05
bitinerant
463
add a comment |
2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
-1
down vote
accepted
You'd better use an HTML parser
But if you really want to use regex, you have to use named groups to achieve what you want.
<img(?=[^>]*class="formula")(?=.*(?<src>src=".*"))(?=.*(?<title>title=".*")).*>
DEMO
answered Nov 10 at 17:19
Toto
63.8k175697
No need to use named groups with this regex <img(?=[^>]*class="formula")(?=.*(src=".*"))(?=.*(title=".*")).*> src will be in group 1 and title in group 2
– Plomging
Nov 10 at 17:36
@Plomging: Yes, you're right, but it's clearer when you use the named groups.
– Toto
Nov 10 at 18:12
@downvoter, what's wrong with this answer?
– Toto
Nov 11 at 10:47
add a comment |
up vote
-1
down vote
accepted
You'd better use an HTML parser
But if you really want to use regex, you have to use named groups to achieve what you want.
<img(?=[^>]*class="formula")(?=.*(?<src>src=".*"))(?=.*(?<title>title=".*")).*>
DEMO
answered Nov 10 at 17:19
Toto
63.8k175697
No need to use named groups with this regex <img(?=[^>]*class="formula")(?=.*(src=".*"))(?=.*(title=".*")).*> src will be in group 1 and title in group 2
– Plomging
Nov 10 at 17:36
@Plomging: Yes, you're right, but it's clearer when you use the named groups.
– Toto
Nov 10 at 18:12
@downvoter, what's wrong with this answer?
– Toto
Nov 11 at 10:47
add a comment |
up vote
-1
down vote
accepted
up vote
-1
down vote
accepted
You'd better use an HTML parser
But if you really want to use regex, you have to use named groups to achieve what you want.
<img(?=[^>]*class="formula")(?=.*(?<src>src=".*"))(?=.*(?<title>title=".*")).*>
DEMO
answered Nov 10 at 17:19
Toto
63.8k175697
You'd better use an HTML parser
But if you really want to use regex, you have to use named groups to achieve what you want.
<img(?=[^>]*class="formula")(?=.*(?<src>src=".*"))(?=.*(?<title>title=".*")).*>
DEMO
answered Nov 10 at 17:19
Toto
63.8k175697
answered Nov 10 at 17:19
Toto
63.8k175697
answered Nov 10 at 17:19
Toto
63.8k175697
answered Nov 10 at 17:19
Toto
63.8k175697
63.8k175697
No need to use named groups with this regex <img(?=[^>]*class="formula")(?=.*(src=".*"))(?=.*(title=".*")).*> src will be in group 1 and title in group 2
– Plomging
Nov 10 at 17:36
@Plomging: Yes, you're right, but it's clearer when you use the named groups.
– Toto
Nov 10 at 18:12
@downvoter, what's wrong with this answer?
– Toto
Nov 11 at 10:47
add a comment |
No need to use named groups with this regex <img(?=[^>]*class="formula")(?=.*(src=".*"))(?=.*(title=".*")).*> src will be in group 1 and title in group 2
– Plomging
Nov 10 at 17:36
@Plomging: Yes, you're right, but it's clearer when you use the named groups.
– Toto
Nov 10 at 18:12
@downvoter, what's wrong with this answer?
– Toto
Nov 11 at 10:47
No need to use named groups with this regex <img(?=[^>]*class="formula")(?=.*(src=".*"))(?=.*(title=".*")).*> src will be in group 1 and title in group 2
– Plomging
Nov 10 at 17:36
No need to use named groups with this regex <img(?=[^>]*class="formula")(?=.*(src=".*"))(?=.*(title=".*")).*> src will be in group 1 and title in group 2
– Plomging
Nov 10 at 17:36
@Plomging: Yes, you're right, but it's clearer when you use the named groups.
– Toto
Nov 10 at 18:12
@Plomging: Yes, you're right, but it's clearer when you use the named groups.
– Toto
Nov 10 at 18:12
@downvoter, what's wrong with this answer?
– Toto
Nov 11 at 10:47
@downvoter, what's wrong with this answer?
– Toto
Nov 11 at 10:47
add a comment |
up vote
-1
down vote
Regular expressions are very flexible and powerful, but in general, they are not the right tool for parsing XML, HTML, or XHTML. From WinBatch:
Regular Expressions are only good for parsing text that is tightly defined. Since Regular Expressions don't really understand the context of matches, they can be fooled in a big way if the structure of the text changes. In particular, Regular Expressions have difficulty with hierarchy.
PerlMonks has a detailed explanation of why regex is not a good solution for all but the most simple of casess. They summarize it like this:
So I hope it is clear: Please, don't try to parse arbitrary XML/HTML with regexes!
answered Nov 10 at 17:05
bitinerant
463
add a comment |
up vote
-1
down vote
Regular expressions are very flexible and powerful, but in general, they are not the right tool for parsing XML, HTML, or XHTML. From WinBatch:
Regular Expressions are only good for parsing text that is tightly defined. Since Regular Expressions don't really understand the context of matches, they can be fooled in a big way if the structure of the text changes. In particular, Regular Expressions have difficulty with hierarchy.
PerlMonks has a detailed explanation of why regex is not a good solution for all but the most simple of casess. They summarize it like this:
So I hope it is clear: Please, don't try to parse arbitrary XML/HTML with regexes!
answered Nov 10 at 17:05
bitinerant
463
add a comment |
up vote
-1
down vote
up vote
-1
down vote
Regular expressions are very flexible and powerful, but in general, they are not the right tool for parsing XML, HTML, or XHTML. From WinBatch:
Regular Expressions are only good for parsing text that is tightly defined. Since Regular Expressions don't really understand the context of matches, they can be fooled in a big way if the structure of the text changes. In particular, Regular Expressions have difficulty with hierarchy.
PerlMonks has a detailed explanation of why regex is not a good solution for all but the most simple of casess. They summarize it like this:
So I hope it is clear: Please, don't try to parse arbitrary XML/HTML with regexes!
answered Nov 10 at 17:05
bitinerant
463
Regular expressions are very flexible and powerful, but in general, they are not the right tool for parsing XML, HTML, or XHTML. From WinBatch:
Regular Expressions are only good for parsing text that is tightly defined. Since Regular Expressions don't really understand the context of matches, they can be fooled in a big way if the structure of the text changes. In particular, Regular Expressions have difficulty with hierarchy.
PerlMonks has a detailed explanation of why regex is not a good solution for all but the most simple of casess. They summarize it like this:
So I hope it is clear: Please, don't try to parse arbitrary XML/HTML with regexes!
answered Nov 10 at 17:05
bitinerant
463
answered Nov 10 at 17:05
bitinerant
463
answered Nov 10 at 17:05
bitinerant
463
answered Nov 10 at 17:05
bitinerant
463
463
add a comment |
add a comment |
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