native::Core(3perl) User Contributed Perl Documentation native::Core(3perl)NAMESVN::Core - Core module of the subversion perl bindings
SYNOPSIS
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);
DESCRIPTIONSVN::Core implements higher level functions of fundamental subversion
functions.
FUNCTIONS
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.
OTHER OBJECTS
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,
etc.
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
functions.
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
"SVN::Core->gpool".
For callback functions providing a pool to your subroutine, you could
also use $pool->default to make it the default pool in the scope.
Methods
new ([$parent])
Create a new pool. The pool is a root pool if $parent is not
supplied.
new_default ([$parent])
Create a new pool. The pool is a root pool if $parent is not
supplied. Set the new pool as default pool.
new_default_sub
Create a new subpool of the current default pool, and set the
resulting pool as new default pool.
clear
Clear the pool.
DESTROY
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.
$svn_error_t->apr_err()
APR error value, possibly SVN_ custom error.
$svn_error_t->message()
Details from producer of error.
$svn_error_t->child()
svn_error_t object of the error that's wrapped.
$svn_error_t->pool()
The pool holding this error and any child errors it wraps.
$svn_error_t->file()
Source file where the error originated.
$svn_error_t->line()
Source line where the error originated.
SVN::Error::strerror($apr_status_t)
Returns the english description of the status code.
$svn_error_t->strerror()
Returns the english description of the apr_err status code set on
the $svn_error_t. This is short for:
SVN::Error::strerror($svn_error_t->apr_err());
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
$child->quick_wrap($new_msg);
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
$chain->compose($new_error);
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
$svn_error_t->expanded_message()
Returns the error message by tracing through the svn_error_t object
and its children and concatenating the error messages. This is how
the internal exception handlers get their error messages.
SVN::Error::is_error($value)
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.
SVN::Error::croak_on_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
$SVN::Error::handler.
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:
my
$result_rev=SVN::Error::croak_on_error($ctx->checkout($url,$path,'HEAD',1));
If there is no error then croak_on_error will return the arguments
passed to it unchanged.
SVN::Error::confess_on_error
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.
SVN::Error::ignore_error
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
parameters.
svn_log_changed_path_t
$lcp->action()
'A'dd, 'D'elete, 'R'eplace, 'M'odify
$lcp->copyfrom_path()
Source path of copy, or "undef" if there isn't any previous
revision history.
$lcp->copyfrom_rev()
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,
$SVN::Node::unknown.
svn_opt_revision_t
svn_config_t
Opaque object describing a set of configuration options.
svn_dirent_t
$dirent->kind()
Node kind. A number which matches one of these constants:
$SVN::Node::none, $SVN::Node::file, $SVN::Node::dir,
$SVN::Node::unknown.
$dirent->size()
Length of file text, or 0 for directories.
$dirent->has_props()
Does the node have properties?
$dirent->created_rev()
Last revision in which this node changed.
$dirent->time()
Time of created_rev (mod-time).
$dirent->last_author()
Author of created rev.
svn_auth_cred_simple_t
$simple->username()
Username.
$simple->password()
Password.
$simple->may_save()
Indicates if the credentials may be saved (to disk).
svn_auth_cred_username_t
$username->username()
Username.
$username->may_save()
Indicates if the credentials may be saved (to disk).
svn_auth_cred_ssl_server_trust_t
$strust->may_save()
Indicates if the credentials may be saved (to disk).
$strust->accepted_failures()
Bit mask of the accepted failures.
svn_auth_ssl_server_cert_info_t
$scert->hostname()
Primary CN.
$scert->fingerprint()
ASCII fingerprint.
$scert->valid_from()
ASCII date from which the certificate is valid.
$scert->valid_until()
ASCII date until which the certificate is valid.
$scert->issuer_dname()
DN of the certificate issuer.
$scert->ascii_cert()
Base-64 encoded DER certificate representation.
svn_auth_cred_ssl_client_cert_t
$ccert->cert_file()
Full paths to the certificate file.
$ccert->may_save()
Indicates if the credentials may be saved (to disk).
svn_auth_cred_ssl_client_cert_pw_t
$ccertpw->password()
Certificate password.
$ccertpw->may_save()
Indicates if the credentials may be saved (to disk).
CONSTANTS
SVN::Auth::SSL
$SVN::Auth::SSL::NOTYETVALID
Certificate is not yet valid.
$SVN::Auth::SSL::EXPIRED
Certificate has expired.
$SVN::Auth::SSL::CNMISMATCH
Certificate's CN (hostname) does not match the remote hostname.
$SVN::Auth::SSL::UNKNOWNCA
Certificate authority is unknown (i.e. not trusted).
$SVN::Auth::SSL::OTHER
Other failure. This can happen if neon has introduced a new failure
bit that we do not handle yet.
_p_svn_lock_t
Objects of this class contain information about locks placed on files
in a repository. It has the following accessor methods:
path
The full path to the file which is locked, starting with a forward
slash ("/").
token
A string containing the lock token, which is a unique URI.
owner
The username of whoever owns the lock.
comment
A comment associated with the lock, or undef if there isn't one.
is_dav_comment
True if the comment was made by a generic DAV client.
creation_date
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.
expiration_date
When the lock will expire. Has the value '0' if the lock will
never expire.
AUTHORS
Chia-liang Kao <clkao@clkao.org>
COPYRIGHT
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 v5.10.1 2008-08-13 native::Core(3perl)
