Bugs item #1305673, was opened at 2005-09-27 18:11
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Category: Core
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Henry (henryl)
Assigned to: Nobody/Anonymous (nobody)
Summary: Adding a regex filter
Initial Comment:
Attached is a build file to enable a regular expression
filter to be used as part of a filter chain. It gives
far more powerful filtering of data than (for example)
replacetokens.
Enable it by including it in your nant config file...
<include buildfile="regex.build" />
Here is an example bit of a task to copy (and filter) a
version.h header file to include build information:
<copy file="${source_filename}"
tofile="${version_header_filename}">
<filterchain>
<regex pattern="(MAJOR_FILE_VER)(.*)"
replacement="$1
${version::get-major(build::get-version())}" />
<regex pattern="(MINOR_FILE_VER)(.*)"
replacement="$1
${version::get-minor(build::get-version()) / 10}" />
<regex pattern="(PRIVATE_FILE_VER)(.*)"
replacement="$1
${version::get-minor(build::get-version()) % 10}" />
<regex pattern="(BUILD_FILE_VER)(.*)"
replacement="$1
${version::get-build(build::get-version())}" />
<regex pattern="(PRODUCT_COMMENTS)(.*)"
replacement='$1 "Release of ${ReleaseName} built on
${environment::get-machine-name()} by
${environment::get-user-name()}\r\nBuild started on
${datetime::now()}"' />
<!-- Strip out comments. Note that we want
to strip out the entire line, so we include the new
line characters. -->
<regex pattern="[\r\n]+//.*" replacement="" />
<!-- Add a note before the initial header
guard that this is the generated copy. Note the new
line characters. -->
<regex pattern="(.*ifndef.*)"
replacement="// This is an automatically generated copy
of the file at ${source_filename}
$1" />
</filterchain>
</copy>
Note that this is using a custom build::get-version()
function, but you get the idea.
The code can be trivially extraced from the build file
and put directly in the nant source (I put it in a
script so I wouldn't have to update everybody's copy of
nant).
Hope someone will find it useful (possibly for
inclusion as a default filter in nant).
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