Apache Module mod_substitute
Summary
mod_substitute
provides a mechanism to perform both regular expression and fixed string substitutions on response bodies.
Substitute Directive
The Substitute
directive specifies a search and replace pattern to apply to the response body.
The meaning of the pattern can be modified by using any combination of these flags:
i
- Perform a case-insensitive match.
n
- By default the pattern is treated as a regular expression. Using the
n
flag forces the pattern to be treated as a fixed string. f
- The
f
flag causes mod_substitute to flatten the result of a substitution allowing for later substitutions to take place on the boundary of this one. This is the default. q
- The
q
flag causes mod_substitute to not flatten the buckets after each substitution. This can result in much faster response and a decrease in memory utilization, but should only be used if there is no possibility that the result of one substitution will ever match a pattern or regex of a subsequent one.
Example
<Location /> AddOutputFilterByType SUBSTITUTE text/html
Substitute s/foo/bar/ni
</Location>
If either the pattern or the substitution contain a slash character then an alternative delimiter should be used:
Example of using an alternate delimiter
<Location /> AddOutputFilterByType SUBSTITUTE text/html
Substitute "s|<BR */?>|<br />|i" </Location>