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native::Core(3perl)   User Contributed Perl Documentation  native::Core(3perl)

       SVN::Core - Core module of the subversion perl bindings

           use SVN::Core; # does apr_initialize and cleanup for you

           # create a root pool and set it as default pool for later use
           my $pool = SVN::Pool->new_default;

           sub something {
               # create a subpool of the current default pool
               my $pool = SVN::Pool->new_default_sub;
               # some svn operations...

               # $pool gets destroyed and the previous default pool
               # is restored when $pool's lexical scope ends

           # svn_stream_t as native perl io handle
           my $stream = $txn->root->apply_text('trunk/filea', undef);
           print $stream $text;
           close $stream;

           # native perl io handle as svn_stream_t
           SVN::Repos::dump_fs($repos, \*STDOUT, \*STDERR,
                               0, $repos->fs->youngest_rev, 0);

       SVN::Core implements higher level functions of fundamental subversion

       SVN::Core::auth_open([auth provider array]);
           Takes a reference to an array of authentication providers and
           returns an auth_baton.  If you use prompt providers you can not use
           this function, but need to use the auth_open_helper.

       SVN::Core::auth_open_helper([auth provider array);
           Prompt providers return two values instead of one.  The 2nd
           parameter is a reference to whatever was passed into them as the
           callback.  auth_open_helper splits up these arguments, passing the
           provider objects into auth_open which gives it an auth_baton and
           putting the other ones in an array.  The first return value of this
           function is the auth_baton, the second is a reference to an array
           containing the references to the callbacks.

           These callback arrays should be stored in the object the auth_baton
           is attached to.

   svn_stream_t - SVN::Stream
       You can use native perl io handles (including io globs) as svn_stream_t
       in subversion functions. Returned svn_stream_t are also translated into
       perl io handles, so you could access them with regular print, read,

       Note that some functions take a stream to read from or write to, but do
       not close the stream while still holding the reference to the io
       handle.  In this case the handle won't be destroyed properly.  You
       should always set up the correct default pool before calling such

   svn_pool_t - SVN::Pool
       The perl bindings significantly simplify the usage of pools, while
       still being manually adjustable.

       For functions requiring a pool as the last argument (which are, almost
       all of the subversion functions), the pool argument is optional. The
       default pool is used if it is omitted. When "SVN::Core" is loaded, it
       creates a new default pool, which is also available from

       For callback functions providing a pool to your subroutine, you could
       also use $pool->default to make it the default pool in the scope.


       new ([$parent])
           Create a new pool. The pool is a root pool if $parent is not

       new_default ([$parent])
           Create a new pool. The pool is a root pool if $parent is not
           supplied.  Set the new pool as default pool.

           Create a new subpool of the current default pool, and set the
           resulting pool as new default pool.

           Clear the pool.

           Destroy the pool. If the pool was the default pool, restore the
           previous default pool. This is normally called automatically when
           the SVN::Pool object is no longer used and destroyed by the perl
           garbage collector.

   svn_error_t - SVN::Error
       By default the perl bindings handle exceptions for you.  The default
       handler automatically croaks with an appropriate error message.  This
       is likely sufficient for simple scripts, but more complex usage may
       demand handling of errors.

       You can override the default exception handler by changing the
       $SVN::Error::handler variable.  This variable holds a reference to a
       perl sub that should be called whenever an error is returned by a svn
       function.  This sub will be passed a svn_error_t object.   Its return
       value is ignored.

       If you set the $SVN::Error::handler to undef then each call will return
       an svn_error_t object as its first return in the case of an error,
       followed by the normal return values.  If there is no error then a
       svn_error_t will not be returned and only the normal return values will
       be returned.  When using this mode you should be careful only to call
       functions in array context.  For example: my ($ci) =
       $ctx->mkdir('http://svn/foo');  In this case $ci will be an svn_error_t
       object if an error occurs and a svn_client_commit_info object
       otherwise.  If you leave the parenthesis off around $ci (scalar
       context) it will be the commit_info object, which in the case of an
       error will be undef.

       If you plan on using explicit exception handling, understanding the
       exception handling system the C API uses is helpful.  You can find
       information on it in the HACKING file and the API documentation.
       Looking at the implementation of SVN::Error::croak_on_error and
       SVN::Error::expanded_message may be helpful as well.

           APR error value, possibly SVN_ custom error.

           Details from producer of error.

           svn_error_t object of the error that's wrapped.

           The pool holding this error and any child errors it wraps.

           Source file where the error originated.

           Source line where the error originated.

           Returns the english description of the status code.

           Returns the english description of the apr_err status code set on
           the $svn_error_t.  This is short for:

       SVN::Error::create($apr_err, $child, $message);
           Returns a new svn_error_t object with the error status specified in
           $apr_err, the child as $child, and error message of $message.

       SVN::Error::quick_wrap($child, $new_msg); or
           A quick n' easy way to create a wrappered exception with your own
           message before throwing it up the stack.

           $child is the svn_error_t object you want to wrap and $new_msg is
           the new error string you want to set.

       SVN::Error::compose($chain, $new_error); or
           Add new_err to the end of $chain's chain of errors.

           The $new_err chain will be copied into $chain's pool and destroyed,
           so $new_err itself becomes invalid after this function.

       SVN::Error::clear($svn_error_t); or $svn_error_t->clear();
           Free the memory used by $svn_error_t, as well as all ancestors and
           descendants of $svn_error_t.

           You must call this on every svn_error_t object you get or you will
           leak memory.

       SVN::Error::expanded_message($svn_error_t) or
           Returns the error message by tracing through the svn_error_t object
           and its children and concatenating the error messages.  This is how
           the internal exception handlers get their error messages.

           Returns true if value is of type svn_error.  Returns false if value
           is anything else or undefined.  This is useful for seeing if a call
           has returned an error.

           Default error handler.  It takes an svn_error_t and extracts the
           error messages from it and croaks with those messages.

           It can be used in two ways.  The first is detailed above as setting
           it as the automatic exception handler via setting

           The second is if you have $SVN::Error::handler set to undef as a
           wrapper for calls you want to croak on when there is an error, but
           you don't want to write an explicit error handler. For example:


           If there is no error then croak_on_error will return the arguments
           passed to it unchanged.

           The same as croak_on_error except it will give a more detailed
           stack backtrace, including internal calls within the implementation
           of the perl bindings.  This is useful when you are doing
           development work on the bindings themselves.

           This is useful for wrapping around calls which you wish to ignore
           any potential error.  It checks to see if the first parameter is an
           error and if it is it clears it.  It then returns all the other

           'A'dd, 'D'elete, 'R'eplace, 'M'odify

           Source path of copy, or "undef" if there isn't any previous
           revision history.

           Source revision of copy, or $SVN::Core::INVALID_REVNUM if there is
           no previous history.

   svn_node_kind_t - SVN::Node
       An enum of the following constants:

       $SVN::Node::none, $SVN::Node::file, $SVN::Node::dir,

       Opaque object describing a set of configuration options.

           Node kind.  A number which matches one of these constants:
           $SVN::Node::none, $SVN::Node::file, $SVN::Node::dir,

           Length of file text, or 0 for directories.

           Does the node have properties?

           Last revision in which this node changed.

           Time of created_rev (mod-time).

           Author of created rev.



           Indicates if the credentials may be saved (to disk).


           Indicates if the credentials may be saved (to disk).

           Indicates if the credentials may be saved (to disk).

           Bit mask of the accepted failures.

           Primary CN.

           ASCII fingerprint.

           ASCII date from which the certificate is valid.

           ASCII date until which the certificate is valid.

           DN of the certificate issuer.

           Base-64 encoded DER certificate representation.

           Full paths to the certificate file.

           Indicates if the credentials may be saved (to disk).

           Certificate password.

           Indicates if the credentials may be saved (to disk).

           Certificate is not yet valid.

           Certificate has expired.

           Certificate's CN (hostname) does not match the remote hostname.

           Certificate authority is unknown (i.e. not trusted).

           Other failure. This can happen if neon has introduced a new failure
           bit that we do not handle yet.

       Objects of this class contain information about locks placed on files
       in a repository.  It has the following accessor methods:

           The full path to the file which is locked, starting with a forward
           slash ("/").

           A string containing the lock token, which is a unique URI.

           The username of whoever owns the lock.

           A comment associated with the lock, or undef if there isn't one.

           True if the comment was made by a generic DAV client.

           Time at which the lock was created, as the number of microseconds
           since 00:00:00 January 1, 1970 UTC.  Divide it by 1_000_000 to get
           a Unix time_t value.

           When the lock will expire.  Has the value '0' if the lock will
           never expire.

       Chia-liang Kao <clkaoATclkao.org>

       Copyright (c) 2003 CollabNet.  All rights reserved.

       This software is licensed as described in the file COPYING, which you
       should have received as part of this distribution.  The terms are also
       available at http://subversion.tigris.org/license-1.html.  If newer
       versions of this license are posted there, you may use a newer version
       instead, at your option.

       This software consists of voluntary contributions made by many
       individuals.  For exact contribution history, see the revision history
       and logs, available at http://subversion.tigris.org/.

perl v5.10.0                      2007-11-05               native::Core(3perl)