The second component to setting up an email-based ChangeSource is to parse the actual notices. This is highly dependent upon the VC system and commit script in use.
A couple of common tools used to create these change emails are:
The following sections describe the parsers available for each of these tools.
Most of these parsers accept a prefix= argument, which is used
to limit the set of files that the buildmaster pays attention to. This
is most useful for systems like CVS and SVN which put multiple
projects in a single repository (or use repository names to indicate
branches). Each filename that appears in the email is tested against
the prefix: if the filename does not start with the prefix, the file
is ignored. If the filename does start with the prefix, that
prefix is stripped from the filename before any further processing is
done. Thus the prefix usually ends with a slash.