# -*- coding: utf-8 -*-

# Copyright (c) 2006 - 2007 Detlev Offenbach <detlev@die-offenbachs.de>
#

"""
Module implementing the version control systems interface to Subversion.
"""

import os
import shutil
import types
import urllib
import time

from PyQt4.QtCore import *
from PyQt4.QtGui import *

from KdeQt import KQMessageBox, KQInputDialog
from KdeQt.KQApplication import e4App

from VCS.VersionControl import VersionControl

import pysvn

from SvnDialog import SvnDialog
from SvnCommitDialog import SvnCommitDialog
from SvnLogDialog import SvnLogDialog
from SvnDiffDialog import SvnDiffDialog
from SvnRevisionSelectionDialog import SvnRevisionSelectionDialog
from SvnStatusDialog import SvnStatusDialog
from SvnTagDialog import SvnTagDialog
from SvnTagBranchListDialog import SvnTagBranchListDialog
from SvnCopyDialog import SvnCopyDialog
from SvnCommandDialog import SvnCommandDialog
from SvnSwitchDialog import SvnSwitchDialog
from SvnMergeDialog import SvnMergeDialog
from SvnPropListDialog import SvnPropListDialog
from SvnPropSetDialog import SvnPropSetDialog
from SvnPropDelDialog import SvnPropDelDialog
from SvnOptionsDialog import SvnOptionsDialog
from SvnNewProjectOptionsDialog import SvnNewProjectOptionsDialog
from SvnBlameDialog import SvnBlameDialog
from SvnInfoDialog import SvnInfoDialog
from SvnRelocateDialog import SvnRelocateDialog
from SvnUrlSelectionDialog import SvnUrlSelectionDialog

from ProjectBrowserHelper import SvnProjectBrowserHelper
from ProjectHelper import SvnProjectHelper

from VCS.vcsSubversion.SvnDialog import SvnDialog as SvnProcessDialog

import Utilities

class Subversion(VersionControl):
    """
    Class implementing the version control systems interface to Subversion.
    
    @signal committed() emitted after the commit action has completed
    """
    def __init__(self, parent=None, name=None):
        """
        Constructor
        
        @param parent parent widget (QWidget)
        @param name name of this object (string or QString)
        """
        VersionControl.__init__(self, parent, name)
        self.defaultOptions = {
            'global' : [''],
            'commit' : [''],
            'checkout' : [''],
            'update' : [''],
            'add' : [''],
            'remove' : [''],
            'diff' : [''],
            'log' : [''],
            'history' : [''],
            'status' : [''],
            'tag' : [''],
            'export' : ['']
        }
        self.interestingDataKeys = [
            "standardLayout",
        ]
        
        self.options = self.defaultOptions
        self.otherData["standardLayout"] = True
        self.tagsList = QStringList()
        self.branchesList = QStringList()
        self.allTagsBranchesList = QStringList()
        self.mergeList = [QStringList(), QStringList(), QStringList()]
        self.showedTags = False
        self.showedBranches = False
        
        self.tagTypeList = QStringList()
        self.tagTypeList.append('tags')
        self.tagTypeList.append('branches')
        
        self.commandHistory = QStringList()
        self.wdHistory = QStringList()
        
        if pysvn.version >= (1, 4, 3, 0) and os.environ.has_key("SVN_ASP_DOT_NET_HACK"):
            self.adminDir = '_svn'
        else:
            self.adminDir = '.svn'
        
        self.log = None
        self.diff = None
        self.status = None
        self.propList = None
        self.tagbranchList = None
        self.blame = None
        
        self.statusCache = {}
        
        self.__commitData = {}
        self.__commitDialog = None
    
    def getClient(self):
        """
        Public method to create and initialize the pysvn client object.
        
        @return the pysvn client object (pysvn.Client)
        """
        configDir = ""
        authCache = True
        for arg in self.options['global']:
            if arg.startswith("--config-dir"):
                configDir = arg.split("=", 1)[1]
            if arg.startswith("--no-auth-cache"):
                authCache = False
        
        client = pysvn.Client(configDir)
        client.exception_style = 1
        client.set_auth_cache(authCache)
        
        return client
    
    ############################################################################
    ## Methods of the VCS interface
    ############################################################################
    
    def vcsShutdown(self):
        """
        Public method used to shutdown the Subversion interface.
        """
        self.log and self.log.close()
        self.diff and self.diff.close()
        self.status and self.status.close()
        self.propList and self.propList.close()
        self.tagbranchList and self.tagbranchList.close()
        self.blame and self.blame.close()
        
    def vcsExists(self):
        """
        Public method used to test for the presence of the svn executable.
        
        @return flag indicating the existance (boolean)
        """
        self.versionStr = ".".join([str(v) for v in pysvn.svn_version[:-1]])
        return True
        
    def vcsInit(self, vcsDir, noDialog = False):
        """
        Public method used to initialize the subversion repository.
        
        The subversion repository has to be initialized from outside eric4
        because the respective command always works locally. Therefore we
        always return TRUE without doing anything.
        
        @param vcsDir name of the VCS directory (string)
        @param noDialog flag indicating quiet operations (boolean)
        @return always TRUE
        """
        return True
        
    def vcsConvertProject(self, vcsDataDict, project):
        """
        Public method to convert an uncontrolled project to a version controlled project.
        
        @param vcsDataDict dictionary of data required for the conversion
        @param project reference to the project object
        """
        success = self.vcsImport(vcsDataDict, project.ppath)[0]
        if not success:
            KQMessageBox.critical(None,
                self.trUtf8("Create project in repository"),
                self.trUtf8("""The project could not be created in the repository."""
                            """ Maybe the given repository doesn't exist or the"""
                            """ repository server is down."""))
        else:
            cwdIsPpath = False
            if os.getcwd() == project.ppath:
                os.chdir(os.path.dirname(project.ppath))
                cwdIsPpath = True
            tmpProjectDir = "%s_tmp" % project.ppath
            os.rename(project.ppath, tmpProjectDir)
            os.makedirs(project.ppath)
            self.vcsCheckout(vcsDataDict, project.ppath)
            if cwdIsPpath:
                os.chdir(project.ppath)
            self.vcsCommit(project.ppath, vcsDataDict["message"], True)
            pfn = project.pfile
            if not os.path.isfile(pfn):
                pfn += "z"
            if not os.path.isfile(pfn):
                KQMessageBox.critical(None,
                    self.trUtf8("New project"),
                    self.trUtf8("""The project could not be checked out of the"""
                                """ repository.<br />"""
                                """Restoring the original contents."""))
                if os.getcwd() == project.ppath:
                    os.chdir(os.path.dirname(project.ppath))
                    cwdIsPpath = True
                else:
                    cwdIsPpath = False
                shutil.rmtree(project.ppath, True)
                os.rename(tmpProjectDir, project.ppath)
                project.pdata["VCS"] = ['None']
                project.vcs = None
                project.setDirty(True)
                project.saveProject()
                return
            shutil.rmtree(tmpProjectDir, True)
            project.openProject(pfn)
        
    def vcsImport(self, vcsDataDict, projectDir, noDialog = False):
        """
        Public method used to import the project into the Subversion repository.
        
        @param vcsDataDict dictionary of data required for the import
        @param projectDir project directory (string)
        @param noDialog flag indicating quiet operations
        @return flag indicating an execution without errors (boolean)
            and a flag indicating the version controll status (boolean)
        """
        noDialog = False
        msg = QString(vcsDataDict["message"])
        if msg.isEmpty():
            msg = QString('***')
        
        vcsDir = self.svnNormalizeURL(vcsDataDict["url"])
        if vcsDir.startswith('/') or vcsDir[1] == '|':
            vcsDir = 'file://%s' % vcsDir
        
        project = vcsDir[vcsDir.rfind('/')+1:]
        
        # create the dir structure to be imported into the repository
        tmpDir = '%s_tmp' % projectDir
        try:
            os.makedirs(tmpDir)
            if self.otherData["standardLayout"]:
                os.mkdir(os.path.join(tmpDir, project))
                os.mkdir(os.path.join(tmpDir, project, 'branches'))
                os.mkdir(os.path.join(tmpDir, project, 'tags'))
                shutil.copytree(projectDir, os.path.join(tmpDir, project, 'trunk'))
            else:
                shutil.copytree(projectDir, os.path.join(tmpDir, project))
        except OSError, e:
            if os.path.isdir(tmpDir):
                shutil.rmtree(tmpDir, 1)            
            return False, False
        
        cwd = os.getcwd()
        os.chdir(os.path.join(tmpDir, project))
        opts = self.options['global'] + self.options['update']
        recurse = "--non-recursive" not in opts
        ignore = "--ignore" in opts
        url = self.__svnURL(vcsDir)
        client = self.getClient()
        if not noDialog:
            dlg = \
                SvnDialog(self.trUtf8('Importing project into Subversion repository'),
                          "import%s%s --message %s ." % \
                            ((not recurse) and " --non-recursive" or "", 
                             ignore and " --ignore" or "",
                             unicode(msg)),
                    client)
            QApplication.processEvents()
        try:
            rev = client.import_(".", url, unicode(msg), recurse, ignore)
            status = True
        except pysvn.ClientError, e:
            status = False
            rev = None
            if not noDialog:
                dlg.showError(e.args[0])
        if not noDialog:
            rev and dlg.showMessage(self.trUtf8("Imported revision %1.\n")\
                                          .arg(rev.number))
            dlg.finish()
            dlg.exec_()
        os.chdir(cwd)
        
        shutil.rmtree(tmpDir, True)
        return status, False
        
    def vcsCheckout(self, vcsDataDict, projectDir, noDialog = False):
        """
        Public method used to check the project out of the Subversion repository.
        
        @param vcsDataDict dictionary of data required for the checkout
        @param projectDir project directory to create (string)
        @param noDialog flag indicating quiet operations
        @return flag indicating an execution without errors (boolean)
        """
        noDialog = False
        try:
            tag = vcsDataDict["tag"]
        except KeyError:
            tag = None
        vcsDir = self.svnNormalizeURL(vcsDataDict["url"])
        if vcsDir.startswith('/') or vcsDir[1] == '|':
            vcsDir = 'file://%s' % vcsDir
            
        if self.otherData["standardLayout"]:
            if tag is None or tag == '':
                svnUrl = '%s/trunk' % vcsDir
            else:
                if not tag.startswith('tags') and not tag.startswith('branches'):
                    type, ok = KQInputDialog.getItem(\
                        None,
                        self.trUtf8("Subversion Checkout"),
                        self.trUtf8("The tag must be a normal tag (tags) or"
                            " a branch tag (branches)."
                            " Please select from the list."),
                        self.tagTypeList,
                        0, False)
                    if not ok:
                        return False
                    tag = '%s/%s' % (unicode(type), tag)
                svnUrl = '%s/%s' % (vcsDir, tag)
        else:
            svnUrl = vcsDir
        
        opts = self.options['global'] + self.options['checkout']
        recurse = "--non-recursive" not in opts
        url = self.__svnURL(svnUrl)
        client = self.getClient()
        if not noDialog:
            dlg = \
                SvnDialog(self.trUtf8('Checking project out of Subversion repository'),
                          "checkout%s %s %s" % \
                            ((not recurse) and " --non-recursive" or "", 
                             url, projectDir),
                    client)
            QApplication.processEvents()
        try:
            rev = client.checkout(url, projectDir, recurse)
            status = True
        except pysvn.ClientError, e:
            status = False
            if not noDialog:
                dlg.showError(e.args[0])
        if not noDialog:
            dlg.finish()
            dlg.exec_()
        return status
        
    def vcsExport(self, vcsDataDict, projectDir):
        """
        Public method used to export a directory from the Subversion repository.
        
        @param vcsDataDict dictionary of data required for the checkout
        @param projectDir project directory to create (string)
        @return flag indicating an execution without errors (boolean)
        """
        try:
            tag = vcsDataDict["tag"]
        except KeyError:
            tag = None
        vcsDir = self.svnNormalizeURL(vcsDataDict["url"])
        if vcsDir.startswith('/') or vcsDir[1] == '|':
            vcsDir = 'file://%s' % vcsDir
            
        if self.otherData["standardLayout"]:
            if tag is None or tag == '':
                svnUrl = '%s/trunk' % vcsDir
            else:
                if not tag.startswith('tags') and not tag.startswith('branches'):
                    type, ok = KQInputDialog.getItem(\
                        None,
                        self.trUtf8("Subversion Export"),
                        self.trUtf8("The tag must be a normal tag (tags) or"
                            " a branch tag (branches)."
                            " Please select from the list."),
                        self.tagTypeList,
                        0, False)
                    if not ok:
                        return False
                    tag = '%s/%s' % (unicode(type), tag)
                svnUrl = '%s/%s' % (vcsDir, tag)
        else:
            svnUrl = vcsDir
        
        opts = self.options['global']
        recurse = "--non-recursive" not in opts
        url = self.__svnURL(svnUrl)
        client = self.getClient()
        dlg = \
            SvnDialog(self.trUtf8('Exporting project from Subversion repository'),
                      "export --force%s %s %s" % \
                        ((not recurse) and " --non-recursive" or "",
                         url, projectDir),
                client)
        QApplication.processEvents()
        try:
            rev = client.export(url, projectDir, force = True, recurse = recurse)
            status = True
        except pysvn.ClientError, e:
            status = False
            dlg.showError(e.args[0])
        dlg.finish()
        dlg.exec_()
        return status
        
    def vcsCommit(self, name, message, noDialog = False):
        """
        Public method used to make the change of a file/directory permanent in the
        Subversion repository.
        
        @param name file/directory name to be committed (string or list of strings)
        @param message message for this operation (string)
        @param noDialog flag indicating quiet operations
        """
        msg = QString(message)
        
        if not noDialog and msg.isEmpty():
            # call CommitDialog and get message from there
            if self.__commitDialog is None:
                self.__commitDialog = SvnCommitDialog()
                self.connect(self.__commitDialog, SIGNAL("accepted()"), 
                             self.__vcsCommit_Step2)
            self.__commitDialog.show()
            self.__commitDialog.raise_()
            self.__commitDialog.activateWindow()
        
        self.__commitData["name"] = name
        self.__commitData["msg"] = msg
        self.__commitData["noDialog"] = noDialog
        
        if noDialog:
            self.__vcsCommit_Step2()
        
    def __vcsCommit_Step2(self):
        """
        Private slot performing the second step of the commit action.
        """
        name = self.__commitData["name"]
        msg = self.__commitData["msg"]
        noDialog = self.__commitData["noDialog"]
        
        if self.__commitDialog is not None:
            msg = self.__commitDialog.logMessage()
            self.disconnect(self.__commitDialog, SIGNAL("accepted()"), 
                            self.__vcsCommit_Step2)
            self.__commitDialog = None
        
        if msg.isEmpty():
            msg = QString('***')
        
        if type(name) is types.ListType:
            dname, fnames = self.splitPathList(name)
        else:
            dname, fname = self.splitPath(name)
            fnames = [fname]
        
        try:
            if self.svnGetReposName(dname).startswith('http') or \
               self.svnGetReposName(dname).startswith('svn'):
                noDialog = False
        except:
            noDialog = False
        
        cwd = os.getcwd()
        os.chdir(dname)
        opts = self.options['global'] + self.options['commit']
        recurse = "--non-recursive" not in opts
        keeplocks = "--keep-locks" in opts
        client = self.getClient()
        if not noDialog:
            dlg = \
                SvnDialog(self.trUtf8('Commiting changes to Subversion repository'),
                          "commit%s%s --message %s %s" % \
                            ((not recurse) and " --non-recursive" or "",
                             keeplocks and " --keep-locks" or "",
                             unicode(msg), " ".join(fnames)),
                    client)
            QApplication.processEvents()
        try:
            rev = client.checkin(fnames, unicode(msg), 
                                 recurse = recurse, keep_locks = keeplocks)
        except pysvn.ClientError, e:
            rev = None
            if not noDialog:
                dlg.showError(e.args[0])
        if not noDialog:
            rev and dlg.showMessage(self.trUtf8("Committed revision %1.")\
                .arg(rev.number))
            dlg.finish()
            dlg.exec_()
        os.chdir(cwd)
        self.emit(SIGNAL("committed()"))
        
    def vcsUpdate(self, name):
        """
        Public method used to update a file/directory with the Subversion repository.
        
        @param name file/directory name to be updated (string or list of strings)
        """
        if type(name) is types.ListType:
            dname, fnames = self.splitPathList(name)
        else:
            dname, fname = self.splitPath(name)
            fnames = [fname]
        
        cwd = os.getcwd()
        os.chdir(dname)
        opts = self.options['global'] + self.options['update']
        recurse = "--non-recursive" not in opts
        client = self.getClient()
        dlg = \
            SvnDialog(self.trUtf8('Synchronizing with the Subversion repository'),
                      "update%s %s" % ((not recurse) and " --non-recursive" or "",
                        " ".join(fnames)),
                client)
        QApplication.processEvents()
        try:
            revlist = client.update(fnames, recurse)
        except pysvn.ClientError, e:
            dlg.showError(e.args[0])
        dlg.finish()
        dlg.exec_()
        os.chdir(cwd)
        
    def vcsAdd(self, name, isDir = False):
        """
        Public method used to add a file/directory to the Subversion repository.
        
        @param name file/directory name to be added (string)
        @param isDir flag indicating name is a directory (boolean)
        """
        if type(name) is types.ListType:
            if isDir:
                dname, fname = os.path.split(unicode(name[0]))
            else:
                dname, fnames = self.splitPathList(name)
        else:
            if isDir:
                dname, fname = os.path.split(unicode(name))
            else:
                dname, fname = self.splitPath(name)
        names = []
        tree = []
        wdir = dname
        while not os.path.exists(os.path.join(dname, self.adminDir)):
            # add directories recursively, if they aren't in the repository already
            tree.insert(-1, dname)
            dname = os.path.split(dname)[0]
            wdir = dname
        names.extend(tree)
        
        if type(name) is types.ListType:
            tree2 = []
            for n in name:
                d = os.path.split(n)[0]
                while not os.path.exists(os.path.join(d, self.adminDir)):
                    if d in tree2 + tree:
                        break
                    tree2.append(d)
                    d = os.path.split(d)[0]
            tree2.reverse()
            names.extend(tree2)
            names.extend(name)
        else:
            names.append(name)
        
        cwd = os.getcwd()
        os.chdir(wdir)
        opts = self.options['global'] + self.options['add']
        recurse = False
        force = "--force" in opts
        ignore = "--ignore" in opts
        client = self.getClient()
        dlg = \
            SvnDialog(\
                self.trUtf8('Adding files/directories to the Subversion repository'),
                    "add --non-recursive%s%s %s" % \
                        (force and " --force" or "",
                         ignore and " --ignore" or "",
                         " ".join(names)),
                client)
        QApplication.processEvents()
        try:
            client.add(names, recurse = recurse, force = force, ignore = ignore)
        except pysvn.ClientError, e:
            dlg.showError(e.args[0])
        dlg.finish()
        dlg.exec_()
        os.chdir(cwd)
        
    def vcsAddBinary(self, name, isDir = False):
        """
        Public method used to add a file/directory in binary mode to the
        Subversion repository.
        
        @param name file/directory name to be added (string)
        @param isDir flag indicating name is a directory (boolean)
        """
        self.vcsAdd(name, isDir)
        
    def vcsAddTree(self, path):
        """
        Public method to add a directory tree rooted at path to the Subversion repository.
        
        @param path root directory of the tree to be added (string or list of strings))
        """
        args = QStringList()
        args.append('add')
        self.addArguments(args, self.options['global'])
        self.addArguments(args, self.options['add'])
        
        tree = []
        if type(path) is types.ListType:
            dname, fnames = self.splitPathList(path)
            for n in path:
                d = os.path.split(n)[0]
                while not os.path.exists(os.path.join(d, self.adminDir)):
                    # add directories recursively, 
                    # if they aren't in the repository already
                    if d in tree:
                        break
                    tree.append(d)
                    d = os.path.split(d)[0]
            tree.reverse()
        else:
            dname, fname = os.path.split(unicode(path))
            while not os.path.exists(os.path.join(dname, self.adminDir)):
                # add directories recursively,
                # if they aren't in the repository already
                tree.insert(-1, dname)
                dname = os.path.split(dname)[0]
        if tree:
            self.vcsAdd(tree, True)
        
        names = []
        if type(path) is types.ListType:
            names.extend(path)
        else:
            names.append(path)
        cwd = os.getcwd()
        os.chdir(dname)
        opts = self.options['global'] + self.options['add']
        recurse = True
        force = "--force" in opts
        ignore = "--ignore" in opts
        client = self.getClient()
        dlg = \
            SvnDialog(\
                self.trUtf8('Adding directory trees to the Subversion repository'),
                    "add%s%s %s" % \
                        (force and " --force" or "",
                         ignore and " --ignore" or "",
                         " ".join(names)),
                client)
        QApplication.processEvents()
        try:
            client.add(names, recurse = recurse, force = force, ignore = ignore)
        except pysvn.ClientError, e:
            dlg.showError(e.args[0])
        dlg.finish()
        dlg.exec_()
        os.chdir(cwd)
        
    def vcsRemove(self, name, project=0):
        """
        Public method used to remove a file/directory from the Subversion repository.
        
        The default operation is to remove the local copy as well.
        
        @param name file/directory name to be removed (string or list of strings))
        @param project flag indicating deletion of a project tree (boolean) (not needed)
        @return flag indicating successfull operation (boolean)
        """
        if type(name) is not types.ListType:
            name = [name]
        opts = self.options['global'] + self.options['remove']
        force = "--force" in opts
        client = self.getClient()
        dlg = \
            SvnDialog(\
                self.trUtf8('Removing files/directories from the Subversion repository'),
                    "remove%s %s" % \
                        (force and " --force" or "",
                         " ".join(name)),
                client)
        QApplication.processEvents()
        try:
            client.remove(name, force = force)
            res = True
        except pysvn.ClientError, e:
            res = False
            dlg.showError(e.args[0])
        dlg.finish()
        dlg.exec_()
        
        return res
        
    def vcsLog(self, name):
        """
        Public method used to view the log of a file/directory from the 
        Subversion repository.
        
        @param name file/directory name to show the log of (string)
        """
        self.log = SvnLogDialog(self)
        self.log.show()
        self.log.start(name)
        
    def vcsDiff(self, name):
        """
        Public method used to view the difference of a file/directory to the 
        Subversion repository.
        
        If name is a directory and is the project directory, all project files
        are saved first. If name is a file (or list of files), which is/are being edited 
        and has unsaved modification, they can be saved or the operation may be aborted.
        
        @param name file/directory name to be diffed (string)
        """
        if type(name) is types.ListType:
            names = name[:]
        else:
            names = [name]
        for nam in names:
            if os.path.isfile(nam):
                editor = e4App().getObject("ViewManager").getOpenEditor(nam)
                if editor and not editor.checkDirty() :
                    return
            else:
                project = e4App().getObject("Project")
                if nam == project.ppath and not project.saveAllScripts():
                    return
        self.diff = SvnDiffDialog(self)
        self.diff.show()
        QApplication.processEvents()
        self.diff.start(name)
        
    def vcsStatus(self, name):
        """
        Public method used to view the status of files/directories in the 
        Subversion repository.
        
        @param name file/directory name(s) to show the status of
            (string or list of strings)
        """
        self.status = SvnStatusDialog(self)
        self.status.show()
        self.status.start(name)
        
    def vcsTag(self, name):
        """
        Public method used to set the tag of a file/directory in the 
        Subversion repository.
        
        @param name file/directory name to be tagged (string)
        """
        dname, fname = self.splitPath(name)
        
        reposURL = self.svnGetReposName(dname)
        if reposURL is None:
            KQMessageBox.critical(None,
                self.trUtf8("Subversion Error"),
                self.trUtf8("""The URL of the project repository could not be"""
                    """ retrieved from the working copy. The tag operation will"""
                    """ be aborted"""))
            return
        
        if self.otherData["standardLayout"]:
            url = None
        else:
            url = self.svnNormalizeURL(reposURL)
        dlg = SvnTagDialog(self.allTagsBranchesList, url,
                           self.otherData["standardLayout"])
        if dlg.exec_() == QDialog.Accepted:
            tag, tagOp = dlg.getParameters()
            self.allTagsBranchesList.removeAll(tag)
            self.allTagsBranchesList.prepend(tag)
        else:
            return
        
        if self.otherData["standardLayout"]:
            rx_base = QRegExp('(.+)/(trunk|tags|branches).*')
            if not rx_base.exactMatch(reposURL):
                KQMessageBox.critical(None,
                    self.trUtf8("Subversion Error"),
                    self.trUtf8("""The URL of the project repository has an"""
                        """ invalid format. The tag operation will"""
                        """ be aborted"""))
                return
            
            reposRoot = unicode(rx_base.cap(1))
            if tagOp in [1, 4]:
                url = '%s/tags/%s' % (reposRoot, urllib.quote(unicode(tag)))
            elif tagOp in [2, 8]:
                url = '%s/branches/%s' % (reposRoot, urllib.quote(unicode(tag)))
        else:
            url = self.__svnURL(unicode(tag))
        
        self.tagName = tag
        client = self.getClient()
        rev = None
        if tagOp in [1, 2]:
            log = 'Created tag <%s>' % unicode(self.tagName)
            dlg = \
                SvnDialog(\
                    self.trUtf8('Tagging %1 in the Subversion repository').arg(name),
                        "copy --message %s %s %s" % (log, reposURL, url),
                    client, log = log)
            QApplication.processEvents()
            try:
                rev = client.copy(reposURL, url)
            except pysvn.ClientError, e:
                dlg.showError(e.args[0])
        else:
            log = 'Deleted tag <%s>' % unicode(self.tagName)
            dlg = \
                SvnDialog(\
                    self.trUtf8('Tagging %1 in the Subversion repository').arg(name),
                        "remove --message %s %s" % (log, url),
                    client, log = log)
            QApplication.processEvents()
            try:
                rev = client.remove(url)
            except pysvn.ClientError, e:
                dlg.showError(e.args[0])
        rev and dlg.showMessage(\
            self.trUtf8("Revision %1.\n").arg(rev.number))
        dlg.finish()
        dlg.exec_()
        
    def vcsRevert(self, name):
        """
        Public method used to revert changes made to a file/directory.
        
        @param name file/directory name to be reverted (string)
        """
        recurse = False
        if type(name) is not types.ListType:
            name = [name]
            if os.path.isdir(name[0]):
                recurse = True
        client = self.getClient()
        dlg = \
            SvnDialog(self.trUtf8('Reverting changes'),
                      "revert %s %s" % ((not recurse) and " --non-recursive" or "",
                        " ".join(name)),
                client)
        QApplication.processEvents()
        try:
            client.revert(name, recurse)
        except pysvn.ClientError, e:
            dlg.showError(e.args[0])
        dlg.finish()
        dlg.exec_()
    
    def vcsSwitch(self, name):
        """
        Public method used to switch a directory to a different tag/branch.
        
        @param name directory name to be switched (string)
        """
        dname, fname = self.splitPath(name)
        
        reposURL = self.svnGetReposName(dname)
        if reposURL is None:
            KQMessageBox.critical(None,
                self.trUtf8("Subversion Error"),
                self.trUtf8("""The URL of the project repository could not be"""
                    """ retrieved from the working copy. The switch operation will"""
                    """ be aborted"""))
            return
        
        if self.otherData["standardLayout"]:
            url = None
        else:
            url = self.svnNormalizeURL(reposURL)
        dlg = SvnSwitchDialog(self.allTagsBranchesList, url,
                              self.otherData["standardLayout"])
        if dlg.exec_() == QDialog.Accepted:
            tag, tagType = dlg.getParameters()
            self.allTagsBranchesList.removeAll(tag)
            self.allTagsBranchesList.prepend(tag)
        else:
            return
        
        if self.otherData["standardLayout"]:
            rx_base = QRegExp('(.+)/(trunk|tags|branches).*')
            if not rx_base.exactMatch(reposURL):
                KQMessageBox.critical(None,
                    self.trUtf8("Subversion Error"),
                    self.trUtf8("""The URL of the project repository has an"""
                        """ invalid format. The switch operation will"""
                        """ be aborted"""))
                return
            
            reposRoot = unicode(rx_base.cap(1))
            tn = tag
            if tagType == 1:
                url = '%s/tags/%s' % (reposRoot, urllib.quote(unicode(tag)))
            elif tagType == 2:
                url = '%s/branches/%s' % (reposRoot, urllib.quote(unicode(tag)))
            elif tagType == 4:
                url = '%s/trunk' % (reposRoot)
                tn = QString('HEAD')
        else:
            url = self.__svnURL(unicode(tag))
            tn = url
        
        client = self.getClient()
        dlg = \
            SvnDialog(self.trUtf8('Switching to %1').arg(tn),
                      "switch %s %s" % (url, name),
                client)
        QApplication.processEvents()
        try:
            rev = client.switch(name, url)
            dlg.showMessage(self.trUtf8("Revision %1.\n").arg(rev.number))
        except pysvn.ClientError, e:
            dlg.showError(e.args[0])
        dlg.finish()
        dlg.exec_()
        
    def vcsMerge(self, name):
        """
        Public method used to merge a URL/revision into the local project.
        
        @param name file/directory name to be merged (string)
        """
        dname, fname = self.splitPath(name)
        
        opts = self.options['global']
        dlg = SvnMergeDialog(self.mergeList[0], self.mergeList[1], self.mergeList[2], 
                             "--force" in opts)
        if dlg.exec_() == QDialog.Accepted:
            urlrev1, urlrev2, target, force = dlg.getParameters()
        else:
            return
        
        # remember URL or revision
        self.mergeList[0].removeAll(urlrev1)
        self.mergeList[0].prepend(urlrev1)
        self.mergeList[1].removeAll(urlrev2)
        self.mergeList[1].prepend(urlrev2)
        
        rx_rev = QRegExp('\\d+|HEAD|head')
        
        cwd = os.getcwd()
        os.chdir(dname)
        recurse = "--non-recursive" not in opts
        if rx_rev.exactMatch(urlrev1):
            if unicode(urlrev1) in ["HEAD", "head"]:
                revision1 = pysvn.Revision(pysvn.opt_revision_kind.head)
                rev1 = "HEAD"
            else:
                revision1 = \
                    pysvn.Revision(pysvn.opt_revision_kind.number, urlrev1.toLong()[0])
                rev1 = unicode(urlrev1)
            if unicode(urlrev2) in ["HEAD", "head"]:
                revision2 = pysvn.Revision(pysvn.opt_revision_kind.head)
                rev2 = "HEAD"
            else:
                revision2 = \
                    pysvn.Revision(pysvn.opt_revision_kind.number, urlrev2.toLong()[0])
                rev2 = unicode(urlrev2)
            if target.isEmpty():
                url1 = unicode(name)
                url2 = unicode(name)
            else:
                url1 = unicode(target)
                url2 = unicode(target)
                
            # remember target
            self.mergeList[2].removeAll(target)
            self.mergeList[2].prepend(target)
        else:
            urlrev1 = unicode(urlrev1)
            if "@" in urlrev1:
                url1, rev = urlrev1.split("@")
                if rev in ["HEAD", "head"]:
                    revision1 = pysvn.Revision(pysvn.opt_revision_kind.head)
                    rev1 = "HEAD"
                else:
                    revision1 = \
                        pysvn.Revision(pysvn.opt_revision_kind.number, int(rev))
                    rev1 = rev
            else:
                url1 = urlrev1
                revision1 = pysvn.Revision(pysvn.opt_revision_kind.unspecified)
                rev1 = ""
            urlrev2 = unicode(urlrev2)
            if "@" in urlrev2:
                url2, rev = urlrev2.split("@")
                if rev in ["HEAD", "head"]:
                    revision2 = pysvn.Revision(pysvn.opt_revision_kind.head)
                    rev2 = "HEAD"
                else:
                    revision2 = \
                        pysvn.Revision(pysvn.opt_revision_kind.number, int(rev))
                    rev2 = rev
            else:
                url2 = urlrev2
                revision2 = pysvn.Revision(pysvn.opt_revision_kind.unspecified)
                rev2 = ""
        client = self.getClient()
        dlg = \
            SvnDialog(\
                self.trUtf8('Merging %1').arg(name),
                    "merge%s%s %s %s %s" % \
                        ((not recurse) and " --non-recursive" or "",
                         force and " --force" or "",
                         "%s%s" % (url1, rev1 and ("@"+rev1) or ""),
                         "%s%s" % (url2, rev2 and ("@"+rev2) or ""),
                         fname),
                client)
        QApplication.processEvents()
        try:
            client.merge(url1, revision1, url2, revision2, fname, 
                         recurse = recurse, force = force)
        except pysvn.ClientError, e:
            dlg.showError(e.args[0])
        dlg.finish()
        dlg.exec_()
        os.chdir(cwd)
        
    def vcsRegisteredState(self, name):
        """
        Public method used to get the registered state of a file in the vcs.
        
        @param name filename to check (string or QString)
        @return a combination of canBeCommited and canBeAdded
        """
        dname, fname = self.splitPath(name)
        
        if fname == '.':
            if os.path.isdir(os.path.join(dname, self.adminDir)):
                return self.canBeCommitted
            else:
                return self.canBeAdded
        
        name = os.path.normcase(unicode(name))
        states = { name : 0 }
        states = self.vcsAllRegisteredStates(states, dname, False)
        if states[name] == self.canBeCommitted:
            return self.canBeCommitted
        else:
            return self.canBeAdded
        
    def vcsAllRegisteredStates(self, names, dname, shortcut = True):
        """
        Public method used to get the registered states of a number of files in the vcs.
        
        <b>Note:</b> If a shortcut is to be taken, the code will only check, if the named
        directory has been scanned already. If so, it is assumed, that the states for
        all files has been populated by the previous run.
        
        @param names dictionary with all filenames to be checked as keys
        @param dname directory to check in (string)
        @param shortcut flag indicating a shortcut should be taken (boolean)
        @return the received dictionary completed with a combination of 
            canBeCommited and canBeAdded or None in order to signal an error
        """
        dname = unicode(dname)
        if not os.path.isdir(os.path.join(dname, self.adminDir)):
            # not under version control -> do nothing
            return names
        
        found = False
        for name in self.statusCache.keys():
            if os.path.dirname(name) == dname:
                if shortcut:
                    found = True
                    break
                if names.has_key(name):
                    found = True
                    names[name] = self.statusCache[name]
        
        if not found:
            from SvnDialogMixin import SvnDialogMixin
            mixin = SvnDialogMixin()
            client = self.getClient()
            client.callback_get_login = \
                mixin._clientLoginCallback
            client.callback_ssl_server_trust_prompt = \
                mixin._clientSslServerTrustPromptCallback
            
            try:
                allFiles = client.status(dname, recurse = True, get_all = True, 
                                              ignore = True, update = False)
                for file in allFiles:
                    name = os.path.normcase(file.path)
                    if file.is_versioned:
                        if names.has_key(name):
                            names[name] = self.canBeCommitted
                        self.statusCache[name] = self.canBeCommitted
                    else:
                        self.statusCache[name] = self.canBeAdded
            except pysvn.ClientError, e:
                pass    # ignore pysvn errors
        
        return names
        
    def clearStatusCache(self):
        """
        Public method to clear the status cache.
        """
        self.statusCache = {}
        
    def vcsName(self):
        """
        Public method returning the name of the vcs.
        
        @return always 'Subversion' (string)
        """
        return "Subversion"

    def vcsCleanup(self, name):
        """
        Public method used to cleanup the working copy.
        
        @param name directory name to be cleaned up (string)
        """
        client = self.getClient()
        dlg = \
            SvnDialog(self.trUtf8('Cleaning up %1').arg(name),
                      "cleanup %s" % name,
                client)
        QApplication.processEvents()
        try:
            rev = client.cleanup(name)
        except pysvn.ClientError, e:
            dlg.showError(e.args[0])
        dlg.finish()
        dlg.exec_()
    
    def vcsCommandLine(self, name):
        """
        Public method used to execute arbitrary subversion commands.
        
        @param name directory name of the working directory (string)
        """
        dlg = SvnCommandDialog(self.commandHistory, self.wdHistory, name)
        if dlg.exec_() == QDialog.Accepted:
            command, wd = dlg.getData()
            commandList = Utilities.parseOptionString(command)
            
            # This moves any previous occurence of these arguments to the head
            # of the list.
            self.commandHistory.removeAll(command)
            self.commandHistory.prepend(command)
            self.wdHistory.removeAll(wd)
            self.wdHistory.prepend(wd)
            
            args = QStringList()
            self.addArguments(args, commandList)
            
            dia = SvnProcessDialog(self.trUtf8('Subversion command'))
            res = dia.startProcess(args, wd)
            if res:
                dia.exec_()
        
    def vcsOptionsDialog(self, project, archive, editable = False, parent = None):
        """
        Public method to get a dialog to enter repository info.
        
        @param project reference to the project object
        @param archive name of the project in the repository (string)
        @param editable flag indicating that the project name is editable (boolean)
        @param parent parent widget (QWidget)
        """
        return SvnOptionsDialog(project, parent)
        
    def vcsNewProjectOptionsDialog(self, parent = None):
        """
        Public method to get a dialog to enter repository info for getting a new project.
        
        @param parent parent widget (QWidget)
        """
        return SvnNewProjectOptionsDialog(parent)
        
    def vcsRepositoryInfos(self, ppath):
        """
        Public method to retrieve information about the repository.
        
        @param ppath local path to get the repository infos (string)
        @return string with ready formated info for display (QString)
        """
        entry = self.getClient().info(ppath)
        if hasattr(pysvn, 'svn_api_version'):
            apiVersion = "%s %s" % \
                (".".join([str(v) for v in pysvn.svn_api_version[:3]]), 
                 pysvn.svn_api_version[3])
        else:
            apiVersion = QString(QApplication.translate('subversion', "unknown"))
        return QString(QApplication.translate('subversion',
            """<h3>Repository information</h3>"""
            """<table>"""
            """<tr><td><b>PySvn V.</b></td><td>%1</td></tr>"""
            """<tr><td><b>Subversion V.</b></td><td>%2</td></tr>"""
            """<tr><td><b>Subversion API V.</b></td><td>%3</td></tr>"""
            """<tr><td><b>URL</b></td><td>%4</td></tr>"""
            """<tr><td><b>Current revision</b></td><td>%5</td></tr>"""
            """<tr><td><b>Committed revision</b></td><td>%6</td></tr>"""
            """<tr><td><b>Committed date</b></td><td>%7</td></tr>"""
            """<tr><td><b>Comitted time</b></td><td>%8</td></tr>"""
            """<tr><td><b>Last author</b></td><td>%9</td></tr>"""
            """</table>"""
            ))\
            .arg(".".join([str(v) for v in pysvn.version]))\
            .arg(".".join([str(v) for v in pysvn.svn_version[:3]]))\
            .arg(apiVersion)\
            .arg(entry.url)\
            .arg(entry.revision.number)\
            .arg(entry.commit_revision.number)\
            .arg(time.strftime("%Y-%m-%d", time.localtime(entry.commit_time)))\
            .arg(time.strftime("%H:%M:%S %Z", time.localtime(entry.commit_time)))\
            .arg(entry.commit_author)
    
    ############################################################################
    ## Public Subversion specific methods are below.
    ############################################################################
    
    def svnGetReposName(self, path):
        """
        Public method used to retrieve the URL of the subversion repository path.
        
        @param path local path to get the svn repository path for (string)
        @return string with the repository path URL
        """
        client = pysvn.Client()
        try:
            entry = client.info(path)
            return entry.url
        except pysvn.ClientError:
            return None

    def svnResolve(self, name):
        """
        Public method used to resolve conflicts of a file/directory.
        
        @param name file/directory name to be resolved (string)
        """
        if type(name) is types.ListType:
            dname, fnames = self.splitPathList(name)
        else:
            dname, fname = self.splitPath(name)
            fnames = [fname]
        
        cwd = os.getcwd()
        os.chdir(dname)
        opts = self.options['global']
        recurse = "--non-recursive" not in opts
        client = self.getClient()
        dlg = \
            SvnDialog(self.trUtf8('Resolving conficts'),
                      "resolved%s %s" % \
                        ((not recurse) and " --non-recursive" or "", 
                        " ".join(fnames)),
                client)
        QApplication.processEvents()
        try:
            for name in fnames:
                rev = client.resolved(name, recurse = recurse)
        except pysvn.ClientError, e:
            dlg.showError(e.args[0])
        dlg.finish()
        dlg.exec_()
        os.chdir(cwd)
    
    def svnCopy(self, name, project):
        """
        Public method used to copy a file/directory.
        
        @param name file/directory name to be copied (string)
        @param project reference to the project object
        @return flag indicating successfull operation (boolean)
        """
        rx_prot = QRegExp('(file:|svn:|svn+ssh:|http:|https:).+')
        dlg = SvnCopyDialog(name)
        res = False
        if dlg.exec_() == QDialog.Accepted:
            target, force = dlg.getData()
            
            client = self.getClient()
            if rx_prot.exactMatch(target):
                target = self.__svnURL(target)
                log = "Copying %s to %s" % (unicode(name), unicode(target))
            else:
                log = ""
                target = unicode(target)
            dlg = \
                SvnDialog(\
                    self.trUtf8('Copying %1').arg(name),
                        "copy%s %s %s" % \
                            (log and (" --message %s" % log) or "", 
                            name, target),
                    client, log = log)
            QApplication.processEvents()
            try:
                client.copy(name, target)
                res = True
            except pysvn.ClientError, e:
                res = False
                dlg.showError(e.args[0])
            dlg.finish()
            dlg.exec_()
            if res and not rx_prot.exactMatch(target):
                if os.path.isdir(name):
                    project.copyDirectory(name, target)
                else:
                    project.appendFile(target)
        return res
    
    def svnMove(self, name, project):
        """
        Public method used to move a file/directory.
        
        @param name file/directory name to be moved (string)
        @param project reference to the project object
        @return flag indicating successfull operation (boolean)
        """
        rx_prot = QRegExp('(file:|svn:|svn+ssh:|http:|https:).+')
        opts = self.options['global']
        dlg = SvnCopyDialog(name, None, True, "--force" in opts)
        res = False
        if dlg.exec_() == QDialog.Accepted:
            target, force = dlg.getData()
            
            client = self.getClient()
            if rx_prot.exactMatch(target):
                target = self.__svnURL(target)
                log = "Moving %s to %s" % (unicode(name), unicode(target))
            else:
                log = ""
                target = unicode(target)
            dlg = \
                SvnDialog(\
                    self.trUtf8('Moving %1').arg(name),
                        "move%s%s %s %s" % \
                            (force and " --force" or "",
                            log and (" --message %s" % log) or "", 
                            name, target),
                    client, log = log)
            QApplication.processEvents()
            try:
                client.move(name, target, force = force)
                res = True
            except pysvn.ClientError, e:
                res = False
                dlg.showError(e.args[0])
            dlg.finish()
            dlg.exec_()
            if res and not rx_prot.exactMatch(target):
                if os.path.isdir(name):
                    project.moveDirectory(name, target)
                else:
                    project.renameFileInPdata(name, target)
        return res
        
    def svnListProps(self, name, recursive = False):
        """
        Public method used to list the properties of a file/directory.
        
        @param name file/directory name (string or list of strings)
        @param recursive flag indicating a recursive list is requested
        """
        self.propList = SvnPropListDialog(self)
        self.propList.show()
        self.propList.start(name, recursive)
        
    def svnSetProp(self, name, recursive = False):
        """
        Public method used to add a property to a file/directory.
        
        @param name file/directory name (string or list of strings)
        @param recursive flag indicating a recursive set is requested
        """
        dlg = SvnPropSetDialog(recursive)
        if dlg.exec_() == QDialog.Accepted:
            propName, propValue, recurse = dlg.getData()
            if not propName:
                KQMessageBox.critical(None,
                    self.trUtf8("Subversion Set Property"),
                    self.trUtf8("""You have to supply a property name. Aborting."""))
                return
            
            if type(name) is types.ListType:
                dname, fnames = self.splitPathList(name)
            else:
                dname, fname = self.splitPath(name)
                fnames = [fname]
            
            cwd = os.getcwd()
            os.chdir(dname)
            opts = self.options['global']
            skipchecks = "--skip-checks" in opts
            client = self.getClient()
            dlg = \
                SvnDialog(\
                    self.trUtf8('Subversion Set Property'),
                        "propset%s%s %s %s %s" % \
                            (recurse and " --recurse" or "",
                             skipchecks and " --skip-checks" or "",
                             propName, propValue,
                             " ".join(fnames)),
                    client)
            QApplication.processEvents()
            try:
                for name in fnames:
                    client.propset(propName, propValue, name, 
                                   recurse = recurse, skip_checks = skipchecks)
            except pysvn.ClientError, e:
                dlg.showError(e.args[0])
            dlg.showMessage(self.trUtf8("Property set."))
            dlg.finish()
            dlg.exec_()
            os.chdir(cwd)
        
    def svnDelProp(self, name, recursive = False):
        """
        Public method used to delete a property of a file/directory.
        
        @param name file/directory name (string or list of strings)
        @param recursive flag indicating a recursive list is requested
        """
        dlg = SvnPropDelDialog(recursive)
        if dlg.exec_() == QDialog.Accepted:
            propName, recurse = dlg.getData()
            
            if not propName:
                KQMessageBox.critical(None,
                    self.trUtf8("Subversion Delete Property"),
                    self.trUtf8("""You have to supply a property name. Aborting."""))
                return
            
            if type(name) is types.ListType:
                dname, fnames = self.splitPathList(name)
            else:
                dname, fname = self.splitPath(name)
                fnames = [fname]
                
            cwd = os.getcwd()
            os.chdir(dname)
            opts = self.options['global']
            skipchecks = "--skip-checks" in opts
            client = self.getClient()
            dlg = \
                SvnDialog(\
                    self.trUtf8('Subversion Delete Property'),
                        "propdel%s%s %s %s" % \
                            (recurse and " --recurse" or "",
                             skipchecks and " --skip-checks" or "",
                             propName, " ".join(fnames)),
                    client)
            QApplication.processEvents()
            try:
                for name in fnames:
                    client.propdel(propName, name, 
                                   recurse = recurse, skip_checks = skipchecks)
            except pysvn.ClientError, e:
                dlg.showError(e.args[0])
            dlg.showMessage(self.trUtf8("Property deleted."))
            dlg.finish()
            dlg.exec_()
            os.chdir(cwd)
        
    def svnListTagBranch(self, path, tags = True):
        """
        Public method used to list the available tags or branches.
        
        @param path directory name of the project (string)
        @param tags flag indicating listing of branches or tags
                (False = branches, True = tags)
        """
        self.tagbranchList = SvnTagBranchListDialog(self)
        self.tagbranchList.show()
        res = self.tagbranchList.start(path, tags)
        if res:
            if tags:
                self.tagsList = self.tagbranchList.getTagList()
                if not self.showedTags:
                    self.allTagsBranchesList = self.allTagsBranchesList + self.tagsList
                    self.showedTags = True
            elif not tags:
                self.branchesList = self.tagbranchList.getTagList()
                if not self.showedBranches:
                    self.allTagsBranchesList = self.allTagsBranchesList + self.branchesList
                    self.showedBranches = True
        
    def svnBlame(self, name):
        """
        Public method to show the output of the svn blame command.
        
        @param name file name to show the blame for (string)
        """
        self.blame = SvnBlameDialog(self)
        self.blame.show()
        self.blame.start(name)
        
    def svnExtendedDiff(self, name):
        """
        Public method used to view the difference of a file/directory to the 
        Subversion repository.
        
        If name is a directory and is the project directory, all project files
        are saved first. If name is a file (or list of files), which is/are being edited 
        and has unsaved modification, they can be saved or the operation may be aborted.
        
        This method gives the chance to enter the revisions to be compared.
        
        @param name file/directory name to be diffed (string)
        """
        if type(name) is types.ListType:
            names = name[:]
        else:
            names = [name]
        for nam in names:
            if os.path.isfile(nam):
                editor = e4App().getObject("ViewManager").getOpenEditor(nam)
                if editor and not editor.checkDirty() :
                    return
            else:
                project = e4App().getObject("Project")
                if nam == project.ppath and not project.saveAllScripts():
                    return
        dlg = SvnRevisionSelectionDialog()
        if dlg.exec_() == QDialog.Accepted:
            revisions = dlg.getRevisions()
            self.diff = SvnDiffDialog(self)
            self.diff.show()
            QApplication.processEvents()
            self.diff.start(name, revisions)
        
    def svnUrlDiff(self, name):
        """
        Public method used to view the difference of a file/directory of two
        repository URLs.
        
        If name is a directory and is the project directory, all project files
        are saved first. If name is a file (or list of files), which is/are being edited 
        and has unsaved modification, they can be saved or the operation may be aborted.
        
        This method gives the chance to enter the revisions to be compared.
        
        @param name file/directory name to be diffed (string)
        """
        if type(name) is types.ListType:
            names = name[:]
        else:
            names = [name]
        for nam in names:
            if os.path.isfile(nam):
                editor = e4App().getObject("ViewManager").getOpenEditor(nam)
                if editor and not editor.checkDirty() :
                    return
            else:
                project = e4App().getObject("Project")
                if nam == project.ppath and not project.saveAllScripts():
                    return
        
        dname = self.splitPath(names[0])[0]
        
        dlg = SvnUrlSelectionDialog(self, self.tagsList, self.branchesList, dname)
        if dlg.exec_() == QDialog.Accepted:
            urls, summary = dlg.getURLs()
            self.diff = SvnDiffDialog(self)
            self.diff.show()
            QApplication.processEvents()
            self.diff.start(name, urls = urls, summary = summary)
        
    def svnLogLimited(self, name):
        """
        Public method used to view the (limited) log of a file/directory from the 
        Subversion repository.
        
        @param name file/directory name to show the log of (string)
        """
        noEntries, ok = KQInputDialog.getInteger(\
            None,
            self.trUtf8("Subversion Log"),
            self.trUtf8("Select number of entries to show."),
            100, 1, 999999, 1)
        if ok:
            self.log = SvnLogDialog(self)
            self.log.show()
            self.log.start(name, noEntries)
        
    def svnLock(self, name, stealIt=False, parent=None):
        """
        Public method used to lock a file in the Subversion repository.
        
        @param name file/directory name to be locked (string or list of strings)
        @param stealIt flag indicating a forced operation (boolean)
        @param parent reference to the parent object of the subversion dialog (QWidget)
        """
        comment, ok = KQInputDialog.getText(\
            None,
            self.trUtf8("Subversion Lock"),
            self.trUtf8("Enter lock comment"),
            QLineEdit.Normal)
        
        if not ok:
            return
        
        comment = unicode(comment)
        
        if type(name) is types.ListType:
            dname, fnames = self.splitPathList(name)
        else:
            dname, fname = self.splitPath(name)
            fnames = [fname]
        
        cwd = os.getcwd()
        os.chdir(dname)
        client = self.getClient()
        dlg = \
            SvnDialog(\
                self.trUtf8('Locking in the Subversion repository'),
                    "lock%s%s %s" % \
                        (stealIt and " --force" or "",
                         comment and (" --message %s" % comment) or "",
                         " ".join(fnames)),
                client, parent = parent)
        QApplication.processEvents()
        try:
            client.lock(fnames, comment, force = stealIt)
        except pysvn.ClientError, e:
            dlg.showError(e.args[0])
        except AttributeError, e:
            dlg.showError(str(e))
        dlg.finish()
        dlg.exec_()
        os.chdir(cwd)
        
    def svnUnlock(self, name, breakIt=False, parent=None):
        """
        Public method used to unlock a file in the Subversion repository.
        
        @param name file/directory name to be unlocked (string or list of strings)
        @param breakIt flag indicating a forced operation (boolean)
        @param parent reference to the parent object of the subversion dialog (QWidget)
        """
        if type(name) is types.ListType:
            dname, fnames = self.splitPathList(name)
        else:
            dname, fname = self.splitPath(name)
            fnames = [fname]
        
        cwd = os.getcwd()
        os.chdir(dname)
        client = self.getClient()
        dlg = \
            SvnDialog(\
                self.trUtf8('Unlocking in the Subversion repository'),
                    "unlock%s %s" % \
                        (breakIt and " --force" or "",
                         " ".join(fnames)),
                client, parent = parent)
        QApplication.processEvents()
        try:
            client.unlock(fnames, force = breakIt)
        except pysvn.ClientError, e:
            dlg.showError(e.args[0])
        except AttributeError, e:
            dlg.showError(str(e))
        dlg.finish()
        dlg.exec_()
        os.chdir(cwd)
        
    def svnInfo(self, projectPath, name):
        """
        Public method to show repository information about a file or directory.
        
        @param projectPath path name of the project (string)
        @param name file/directory name relative to the project (string)
        """
        dlg = SvnInfoDialog(self)
        dlg.start(projectPath, name)
        dlg.exec_()
        
    def svnRelocate(self, projectPath):
        """
        Public method to relocate the working copy to a new repository URL.
        
        @param projectPath path name of the project (string)
        """
        currUrl = self.svnGetReposName(projectPath)
        dlg = SvnRelocateDialog(currUrl)
        if dlg.exec_() == QDialog.Accepted:
            newUrl = dlg.getData()
            client = self.getClient()
            dlg = \
                SvnDialog(self.trUtf8('Relocating'),
                          "relocate %s %s %s" % \
                            (currUrl, newUrl, projectPath),
                    client)
            QApplication.processEvents()
            try:
                client.relocate(currUrl, newUrl, projectPath, recurse = True)
            except pysvn.ClientError, e:
                dlg.showError(e.args[0])
            dlg.finish()
            dlg.exec_()

    ############################################################################
    ## Private Subversion specific methods are below.
    ############################################################################
    
    def __svnURL(self, url):
        """
        Private method to format a url for subversion.
        
        @param url unformatted url string (string)
        @return properly formated url for subversion
        """
        url = self.svnNormalizeURL(url)
        url = tuple(url.split(':', 2))
        if len(url) == 3:
            scheme = url[0]
            host = url[1]
            port, path = url[2].split("/",1)
            return "%s:%s:%s/%s" % (scheme, host, port, urllib.quote(path))
        else:
            scheme = url[0]
            if scheme == "file":
                return "%s:%s" % (scheme, urllib.quote(url[1]))
            else:
                host, path = url[1][2:].split("/",1)
                return "%s://%s/%s" % (scheme, host, urllib.quote(path))

    def svnNormalizeURL(self, url):
        """
        Public method to normalize a url for subversion.
        
        @param url url string (string)
        @return properly normalized url for subversion
        """
        url = url.replace('\\', '/')
        if url.endswith('/'):
            url = url[:-1]
        urll = url.split('//')
        return "%s//%s" % (urll[0], '/'.join(urll[1:]))

    ############################################################################
    ## Methods to get the helper objects are below.
    ############################################################################
    
    def vcsGetProjectBrowserHelper(self, browser, project, isTranslationsBrowser = False):
        """
        Public method to instanciate a helper object for the different project browsers.
        
        @param browser reference to the project browser object
        @param project reference to the project object
        @param isTranslationsBrowser flag indicating, the helper is requested for the
            translations browser (this needs some special treatment)
        @return the project browser helper object
        """
        return SvnProjectBrowserHelper(self, browser, project, isTranslationsBrowser)
        
    def vcsGetProjectHelper(self, project):
        """
        Public method to instanciate a helper object for the project.
        
        @param project reference to the project object
        @return the project helper object
        """
        return SvnProjectHelper(self, project)
