Grep & Regex
[grep] context
This popular UNIX utility has been adapted to WebDNA. [grep] replaces text based on a regular expression.
[grep search=regexp&replace=regexp] Any Text [/grep]Parameters
| Parameter | Description |
|---|---|
| search | (Required) Regular expression that defines what text to search for in the body of the context |
| replace | (Required) Regular expression that defines how to output the resulting text |
ignorecase | (Optional) T/F ignores case sensitivity while performing the grep function |
Example WebDNA code:
Hi, my phone number is 555-1234, and I'd like you to call me
Using 'ignorecase' parameter in [grep] context. Search for 'usa' and replace with 'USA'
Example WebDNA code:
I was born in the USA
I was born in the USA
I was born in the USA
Removing html tags from text
Example WebDNA code:
but not here 1 but not here 2 but not here 3
[grep search=([0-9]*-[0-9]*)&replace=<strong>\1</strong>]
Hi, my phone number is 555-1234, and I'd like you to call me
[/grep]Hi, my phone number is 555-1234, and I'd like you to call me
Using 'ignorecase' parameter in [grep] context. Search for 'usa' and replace with 'USA'
Example WebDNA code:
[grep search=usa&replace=USA&ignorecase=T]
I was born in the usA
I was born in the uSa
I was born in the Usa
[/grep]I was born in the USA
I was born in the USA
I was born in the USA
Removing html tags from text
Example WebDNA code:
[grep search=(<[a-z]*>[^<>]*<\/[a-z]*>|<[a-z]*>)&replace=]
<script>remove the code that's here 1</script> but not here 1 <br> <hr>
<script>remove the code that's here 2</script> but not here 2 <br> <hr>
<script>remove the code that's here 3</script> but not here 3 <br> <hr>
[/grep]but not here 1 but not here 2 but not here 3
[regex] WebDNA v8.1+ context
[regex] is a full implementation of [grep], starting from version 8.1 of WebDNA. The older implementation of [grep] remains for backward compatibility for its simple search and replace capabilities, however, [regex] is a better choice.
Syntax is the same as for [grep], except that it does not have the limitations of WebDNA's implementation of [grep]
Syntax is the same as for [grep], except that it does not have the limitations of WebDNA's implementation of [grep]
Some specific operators used by [regex] will be interpreted by WebDNA, like "%2B" or "%26" for instance. In this case, it is safer to [url][/url] the operator like in the following
Example WebDNA code:[text]value=\b0%2B[/text]
[regex search=[value]&replace=]080.010.001.305[/regex][text]value=\b0+[/text]
[regex search=[url][value][/url]&replace=]080.010.001.305[/regex]