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README
post-commit
svn-watch.pl

README

Note: You can generate this documentation with the following commands;

* perldoc svn-watch.pl
* pod2text svn-watch.pl > documentation.txt  #Text Documentation
* pod2html svn-watch.pl > svn-watch.html     #HTML Documentation

========================================================================

NAME
    svn-watch.pl

SYNOPSIS
        svn-watch.pl -r <rev> [-directory <dir>] [-suffix <suffix>] \
            [-domain <domain>] [-smtphost <host>] [-message <message>] \
            [-sender <sender>] [-svnlook <svnlook>] [-subject <subject>] \
            [-debug <debuglevel>] [-url <url>] [-noemail] \
            [-smtpuser <host> -smtppassword <passwd>] <repos>
    or
        svn-watch.pl -help

    or svn-watch.pl -options

DESCRIPTION
    This program implements watchlists in Subversion. A watchlist is a list
    of files that a particular user would be notified on if changes occur in
    a file that user was watching. Although there are many similar programs
    like this for Subversion, most require access to the Subversion server
    to set, so users are unable to set their own watch lists.

    This program, however, allows users of Subversion to set their own watch
    lists since the watch list is actually stored in the Subversion
    repository itself.

    In the user's watchlist, the user specifies the various email addresses
    where notifications are sent when a file they were watching was
    modified. Users are allowed to specify multiple email addresses, and the
    program can be configured to automatically email the user at a default
    email address if the user didn't specify one. The default email address
    is set to the user's Subversion account name at the default domain
    provided when executing this program.

    Users can specify the files thwy are watching using Ant globbing (which
    has very straight forward syntax) or Perl regular expressions (which are
    more powerful, but the syntax is trickier).

INSTALLATION
    This program operates as a Subversion post-commit trigger and is
    automatically executed after each revision.

  REQUIREMENTS
    *   Perl 5.7 or later.

    *   Mail::Sendmail (optional). This is an optional Perl module to
        install. It's very old, but straightforward and usually works
        without too many issues. You can use the Perl CPAN utility to
        install this module.

        If this module is not installed, this program will automatically use
        the Net::SMTP module which is a standard Perl module, so it doesn't
        have to be installed. Unfortunately, this module sometimes fails and
        crashes the post-commit process leaving the Subversion client
        confused. Still, almost all sites have successfully used this
        program without installing Mail::Sendmail.

  WINDOWS
    Copy this program into your Subversion repository's hook directory. Copy
    or rename the post-commit.tmpl script to post-commit.bat. Modify the
    post-commit.bat file to execute this script. The PATH environment will
    not be set when the hook executes, so you need to include both the path
    to your Perl interpreter and to this program:

        set REV=%1
        set REPOS=%2
        C:\Perl\bin\perl %REPOS%\hooks\svn-watch.pl -r %REV% %REPOS%

  UNIX, LINUX, MAC OS X, AND OTHER REAL OPERATING SYSTEMS
    Copy this program into your Subversion repository's hook directory. Copy
    or rename the post-commit.tmpl script to post-commit. Modify the
    post-commit script to execute this script. The PATH environment will be
    set to the default "/bin:/usr/bin", so if your Perl interpreter is
    located in "/usr/local/bin" or some other non-standard place, you'll
    need to put the path to your Perl's interpreter and the perl interpreter
    in the script:

        REV=$1
        REPOS=$2

        # If you have Perl located in F</usr/bin> or F</bin>

        $REPOS/hooks/svn-watch.pl -r $REV $REPOS

        # If you have Perl in a funky location

        /usr/local/bin/perl5.8 $REPOS/hooks/svn-watch.pl -r $REV $REPOS

    path to your Perl interpreter and to this program:

  DIRECTIONS
    The default location for the watch files is in the root of the
    repository under a directory called /watchers. This can be modified by
    using the command line parameters. However, you shouldn't put this file
    in under the trunk, branches, or tags directory, nor should it be placed
    in a module sub-directory.

    The user's watch file will be the user's Subversion account name
    followed by a suffix. The default suffix is .cfg, but again the suffix
    can be changed by the command line parameters. You can use the
    pre-commit-kitchen-sink-hook.pl program (also available from DaveCo
    Software and Bait Shoppe, LLC) to prevent users from editing other
    users' watch files.

WATCH FILE LAYOUT
    Each line in the Watchfile is one of six formats. (There are three line
    types and each has a synonym). Any other line not in one of these
    formats is ignored.

    * "email = "*<User's Email Address>*

    * "mail = "*<User's Email Address>*

    * "file = "*<Ant's Glob Description of the File to Watch>*

    * "glob = "*<Ant's Glob Description of the File to Watch>*

    * "match = "*<Perl Regular Expression fo the File to Watch>*

    * "regex = "*<Perl Regular Expression fo the File to Watch>*

    The line type at the beginning of the line is case insensitive. All
    white space at the beginning and end of the line is also ignored as well
    as the white space around the equals sign. All of the following lines do
    the same thing:

        email = bob@mycompany.com
        email=bob@mycompany.com
        EMAIL = bob@mycompany.com
        EmAiL = bob@mycompany.com
        EmAiL=     bob@mycompany.com

    The three different types of lines are:

    email or mail:
        The email address the notification is sent to. Users can have more
        than one email line, and a notification message will be sent to all
        of them.

    file or glob:
        Specifies a file to be watched. This specification is in Ant's
        globbing syntax which is easier and more familar than regular
        expressions. The globbing syntax has three parts.

        *    A single astrisk represents zero or more characters, but only
             with in the directory. Thus, if you specify:

                 file = /projects/myproj/*/*.java

             A watch would be placed on all Java files in the directory
             "/project/myproj/foo/" and in "/project/myproj/bar", but not
             Java files in "/project/myproj/foo/bar" since only the
             directories right below "/project/myproj" were specified and
             not any of their subdirectories.

        ?    A question mark represents a single character. So
             "/project/myproj/foo/apple?.java" would place a watch on
             "/project/myproj/foo/apple1.java" and
             "/project/myproj/foo/apple2.java", but not
             "/project/myproj/foo/apple.java" or
             "/project/myproj/foo/apple12.java".

        **   A double astrisk represents any number of characters in any
             directory or subdirectory tree. "/project/myproj/foo/**/*.java"
             would place a watch on any Jaa file under the
             "/project/myproj/foo" directory tree.

    match or regex:
        This specifies a match using the full set of Perl regular
        expressions. Perl regular expressions are more complex than simple
        globs, but gives the user much more power over matching file names.
        For example, a single Perl regular expression can match multiple
        suffixes in a file.

        Regular expressions do not require slashes before and after, and
        should not be in quotes. Regular expressions are not anchored, so
        "foo" would match any occurance of "foo" in the file name. You can
        use the standard Perl anchors of "^" and "$" to anchor a regular
        expression at teh beginning or end of a line.

        For more information on Perl regular expressions, type in the
        following command:

            $ perldoc perlre

    NOTE:
        All glob expressions are anchored to the root of the repository
        direcotry. And, the root of the directory tree starts with a slash.
        Thus, merely specifying "myproj/*.java" will not put a watch on any
        file. However, users can specify a double at the beginning of their
        file specification to remove this anchoring. Thus
        "**/myproj/**/*.java" would place a watch on any Java file under a
        directory "myproj" located anywhere in the repository.

  WATCH FILE LINE EXAMPLES
    *   Send an email to Bob's Acme's email address

            mail = bob@acme.com

    *   Send an email to Bob's Cellphone pager

            email = 2125554567@verizon.net

    *   Let me know when any build.xml file is modified

            file = **/build.xml

    *   Let me know when someone modifies any help files

            glob = **/main/src/**/help/**

    *   Let me know if someone modifies an shell script or Perl script

            match = \.(pl|sh|ksh|bash)$

    *   Let me know if someone modifies any build.xml file I suspect that
        some are in the format build-*.xml or build.*.xml:

            regex = build(-\.)\w+\.xml$

OPTIONS
    -r:         REQUIRED This is the revision number used for the
                post-commit trigger and is passed as the second command line
                argument to the post-commit trigger.

    -directory: Name of the directory in the repository where the Watch
                files are stored. Only files stored directly under this
                directory will be examined as watchfiles files in
                sub-directories will be ignored.

                The default is "/watchers".

    -suffix:    The suffix for watch files. Watch files are the same name as
                the subversion user ID plus the suffix. If a watch file does
                not have this suffix, it will be ignored. Suffixes are added
                to the file after a period, so you don't have to specify the
                beginning period. However, if you do, it will be ignored.

                The default is "cfg"

                For example, if both the default for "-directory" and
                "-suffix" are kept, user "bob" would have the watch file
                "/watchfiles/bob.cfg".

    -domain:    The domain to add to user names if the user does not specify
                an email address for example, if the domain is set to
                "mycompany.com" and user *bob* is suppose to receive a
                notification message, the message will be sent to
                "bob@mycompany.com".

    -smtphost:  The SMTP host used for sending email messages.

    -message:   This is a text file that contains the message to email to
                users when a file they are watching is changed. Certain
                keywords are replaced with values taken from the
                notificaiton list. If you use your own message, you can
                include these special keywords in your own message.

                %AUTHOR%       The name of the user who did the commit.

                %CHANGED%      A list of all the files changed that the user
                               is interested in. This listing is one per
                               line.

                %COMMIT%       The commit message made by the author at the
                               time of the commit. NOTE: The commit message
                               can be more than one line long. Remember that
                               when you format your notification message.

                %EMAIL%        The email address of the user.

                %REVISION%     The revision of the Subverision repository.

                %URL%          The URL used by the users to access the
                               Subversion repository.

                %USER%         The Subversion user ID of the user getting
                               the notificaiton message.

                %WATCHFILE%    The name of the user's watchfile including
                               its full path.

    -sender     The email address you want to appear as the sender of the
                notification message. Note this will be the address used if
                a user replies to their notification message.

                Default can be seen via "svn-watch.pl -help".

    -svnlook:   The location of the "svnlook" command.

                The default is "/usr/bin/svnlook".

    -debug      This is the debug level. The higher the number, the more
                debugging messages.

                The default is "0" which means no debugging informtion.

    -url        This is the URL that the users normally use to access the
                Subversion repository. This is mainly used for the
                notification email message sent to the users.

    -smtpuser -smtppassword
                These two items are required if your SMTP server uses
                authorization. The "-smtpuser" is the user, the
                "-smtppassword)" is the password to use, and the "-smtpauth"
                is the authorization type needed for sending the user name
                and password.

    -subject    This is the subject line that will appear on emails sent out
                ot watchers. Certain keywords are replaced with values taken
                from the notificaiton list. If you use your own subject
                line, you can include these special keywords in your own
                subject line.

    -noemail    This option prevents users from defining their own email
                addresses. Apparently, someone at one of the sites that used
                this couldn't understand the concept that he wasn't suppose
                to tell other peoplw what files they were suppose to watch.
                If used, only the default email address will be used.

    *<repos>*   REQUIRED: The path to the root of the Subversion repository.

    -help       Displays a brief help message just showing the command line
                options.

    -options    Displays indepth help message showing the command line and
                description of all the options.

BUGS
    *   There is nothing preventing a user from entering someone else's
        email address, and there's no easy way to catch this. We simply are
        trusting everyone to act professionally.

    *   This program doesn't show the diff between the files like
        "svnnotify" does.

    *   It would be nice if this program could interface somehow with
        svnnotify. An earlier version attempted to, but it never really
        worked as advertised, and made the code more difficult to read. The
        whole thing was removed in a later version.

SEE ALSO
        svnnotify(1)

AUTHOR
    David Weintraub <david@weintraub.name>

COPYRIGHT
    Copyright (c) 2011 by David Weintraub. All rights reserved. This program
    is covered by the open source BMAB license.

    The BMAB (Buy me a beer) license allows you to use all code for whatever
    reason you want with these three caveats:

    1.  If you make any modifications in the code, please consider sending
        them to me, so I can put them into my code.

    2.  Give me attribution and credit on this program.

    3.  If you're in town, buy me a beer. Or, a cup of coffee which is what
        I'd prefer. Or, if you're feeling really spendthrify, you can buy me
        lunch. I promise to eat with my mouth closed and to use a napkin
        instead of my sleeves.