lib/python/Components/DreamInfoHandler.py

   1 import xml.sax
   2 from Tools.Directories import crawlDirectory, resolveFilename, SCOPE_CONFIG, SCOPE_SKIN
   3 from Components.NimManager import nimmanager
   4 from Components.Ipkg import IpkgComponent
   5 from Components.config import config, configfile
   6 from enigma import eConsoleAppContainer, eDVBDB
   7 import os
   8
   9 class InfoHandlerParseError(Exception):
  10         def __init__(self, value):
  11                 self.value = value
  12         def __str__(self):
  13                 return repr(self.value)
  14
  15 class InfoHandler(xml.sax.ContentHandler):
  16         def __init__(self, prerequisiteMet, directory):
  17                 self.attributes = {}
  18                 self.directory = directory
  19                 self.list = []
  20                 self.globalprerequisites = {}
  21                 self.prerequisites = {}
  22                 self.elements = []
  23                 self.validFileTypes = ["skin", "config", "services", "favourites", "package"]
  24                 self.prerequisitesMet = prerequisiteMet
  25
  26
  27         def printError(self, error):
  28                 print "Error in defaults xml files:", error
  29                 raise InfoHandlerParseError, error
  30
  31         def startElement(self, name, attrs):
  32                 #print name, ":", attrs.items()
  33                 self.elements.append(name)
  34                 if name in ["hardware", "bcastsystem", "satellite", "tag"]:
  35                         if not attrs.has_key("type"):
  36                                         self.printError(str(name) + " tag with no type attribute")
  37                         if self.elements[-3] == "default":
  38                                 prerequisites = self.globalprerequisites
  39                         else:
  40                                 prerequisites = self.prerequisites
  41                         if not prerequisites.has_key(name):
  42                                 prerequisites[name] = []
  43                         prerequisites[name].append(str(attrs["type"]))
  44                 if name == "files":
  45                         if attrs.has_key("type"):
  46                                 if attrs["type"] == "directories":
  47                                         self.attributes["filestype"] = "directories"
  48                                 # TODO add a compressed archive type
  49                 if name == "file":
  50                         self.prerequisites = {}
  51                         if not attrs.has_key("type"):
  52                                 self.printError("file tag with no type attribute")
  53                         else:
  54                                 if not attrs.has_key("name"):
  55                                         self.printError("file tag with no name attribute")
  56                                 else:
  57                                         if not attrs.has_key("directory"):
  58                                                 directory = self.directory
  59                                         type = attrs["type"]
  60                                         if not type in self.validFileTypes:
  61                                                 self.printError("file tag with invalid type attribute")
  62                                         else:
  63                                                 self.filetype = type
  64                                                 self.fileattrs = attrs
  65         def endElement(self, name):
  66                 #print "end", name
  67                 #print "self.elements:", self.elements
  68                 self.elements.pop()
  69                 if name == "file":
  70                         #print "prerequisites:", self.prerequisites
  71                         if len(self.prerequisites) == 0 or self.prerequisitesMet(self.prerequisites):
  72                                 if not self.attributes.has_key(self.filetype):
  73                                         self.attributes[self.filetype] = []
  74                                 if self.fileattrs.has_key("directory"):
  75                                         directory = str(self.fileattrs["directory"])
  76                                         if len(directory) < 1 or directory[0] != "/":
  77                                                 directory = self.directory + directory
  78                                 else:
  79                                         directory = self.directory
  80                                 self.attributes[self.filetype].append({ "name": str(self.fileattrs["name"]), "directory": directory })
  81
  82                 if name == "default":
  83                         self.list.append({"attributes": self.attributes, 'prerequisites': self.globalprerequisites})
  84                         self.attributes = {}
  85                         self.globalprerequisites = {}
  86
  87         def characters(self, data):
  88                 if self.elements[-1] == "author":
  89                         self.attributes["author"] = str(data)
  90                 if self.elements[-1] == "name":
  91                         self.attributes["name"] = str(data)
  92                 #print "characters", data
  93
  94 class DreamInfoHandler:
  95         STATUS_WORKING = 0
  96         STATUS_DONE = 1
  97         STATUS_ERROR = 2
  98         STATUS_INIT = 4
  99
 100         def __init__(self, statusCallback, blocking = False, neededTag = None):
 101                 self.directory = "/"
 102
 103                 self.neededTag = neededTag
 104
 105                 # caution: blocking should only be used, if further execution in enigma2 depends on the outcome of
 106                 # the installer!
 107                 self.blocking = blocking
 108
 109                 self.currentlyInstallingMetaIndex = None
 110
 111                 self.console = eConsoleAppContainer()
 112                 self.console.appClosed.get().append(self.installNext)
 113
 114                 self.statusCallback = statusCallback
 115                 self.setStatus(self.STATUS_INIT)
 116
 117                 self.packageslist = []
 118
 119         def readInfo(self, directory, file):
 120                 print "Reading .info file", file
 121                 handler = InfoHandler(self.prerequisiteMet, directory)
 122                 try:
 123                         xml.sax.parse(file, handler)
 124                         for entry in handler.list:
 125                                 self.packageslist.append((entry,file))
 126                 except InfoHandlerParseError:
 127                         print "file", file, "ignored due to errors in the file"
 128                 print handler.list
 129
 130         # prerequisites = True: give only packages matching the prerequisites
 131         def fillPackagesList(self, prerequisites = True):
 132                 self.packageslist = []
 133                 packages = []
 134                 if not isinstance(self.directory, list):
 135                         self.directory = [self.directory]
 136
 137                 for directory in self.directory:
 138                         packages += crawlDirectory(directory, ".*\.info$")
 139
 140                 for package in packages:
 141                         self.readInfo(package[0] + "/", package[0] + "/" + package[1])
 142
 143                 if prerequisites:
 144                         for package in self.packageslist[:]:
 145                                 if not self.prerequisiteMet(package[0]["prerequisites"]):
 146                                         self.packageslist.remove(package)
 147                 return self.packageslist
 148
 149         def prerequisiteMet(self, prerequisites):
 150                 # TODO: we need to implement a hardware detection here...
 151                 print "prerequisites:", prerequisites
 152                 met = True
 153                 if self.neededTag is None:
 154                         if prerequisites.has_key("tag"):
 155                                 return False
 156                 else:
 157                         if prerequisites.has_key("tag"):
 158                                 if not self.neededTag in prerequisites["tag"]:
 159                                         return False
 160
 161                 if prerequisites.has_key("satellite"):
 162                         for sat in prerequisites["satellite"]:
 163                                 if int(sat) not in nimmanager.getConfiguredSats():
 164                                         return False
 165                 if prerequisites.has_key("bcastsystem"):
 166                         for bcastsystem in prerequisites["bcastsystem"]:
 167                                 if nimmanager.hasNimType(bcastsystem):
 168                                         return True
 169                         return False
 170                 if prerequisites.has_key("hardware"):
 171                         for hardware in prerequisites["hardware"]:
 172                                 # TODO: hardware detection
 173                                 met = True
 174                 return True
 175
 176         def installPackages(self, indexes):
 177                 print "installing packages", indexes
 178                 if len(indexes) == 0:
 179                         self.setStatus(self.STATUS_DONE)
 180                         return
 181                 self.installIndexes = indexes
 182                 print "+++++++++++++++++++++++bla"
 183                 self.currentlyInstallingMetaIndex = 0
 184                 self.installPackage(self.installIndexes[self.currentlyInstallingMetaIndex])
 185
 186         def installPackage(self, index):
 187                 print "installing package with index", index, "and name", self.packageslist[index][0]["attributes"]["name"]
 188
 189                 attributes = self.packageslist[index][0]["attributes"]
 190                 self.installingAttributes = attributes
 191                 self.attributeNames = ["skin", "config", "favourites", "package", "services"]
 192                 self.currentAttributeIndex = 0
 193                 self.currentIndex = -1
 194                 self.installNext()
 195
 196         def setStatus(self, status):
 197                 self.status = status
 198                 self.statusCallback(self.status, None)
 199
 200         def installNext(self, *args, **kwargs):
 201                 self.currentIndex += 1
 202                 attributes = self.installingAttributes
 203                 #print "attributes:", attributes
 204
 205                 if self.currentAttributeIndex >= len(self.attributeNames): # end of package reached
 206                         print "end of package reached"
 207                         if self.currentlyInstallingMetaIndex is None or self.currentlyInstallingMetaIndex >= len(self.installIndexes) - 1:
 208                                 print "set status to DONE"
 209                                 self.setStatus(self.STATUS_DONE)
 210                                 return
 211                         else:
 212                                 print "increment meta index to install next package"
 213                                 self.currentlyInstallingMetaIndex += 1
 214                                 self.installPackage(self.installIndexes[self.currentlyInstallingMetaIndex])
 215
 216                 self.setStatus(self.STATUS_WORKING)
 217
 218                 currentAttribute = self.attributeNames[self.currentAttributeIndex]
 219
 220                 print "installing", currentAttribute, "with index", self.currentIndex
 221
 222                 if attributes.has_key(currentAttribute):
 223                         if self.currentIndex >= len(attributes[currentAttribute]): # all jobs done for current attribute
 224                                 self.currentIndex = -1
 225                                 self.currentAttributeIndex += 1
 226                                 self.installNext()
 227                                 return
 228                 else: # nothing to install here
 229                         self.currentIndex = -1
 230                         self.currentAttributeIndex += 1
 231                         self.installNext()
 232                         return
 233
 234                 if currentAttribute == "skin":
 235                         skin = attributes["skin"][self.currentIndex]
 236                         self.installSkin(skin["directory"], skin["name"])
 237                 elif currentAttribute == "config":
 238                         if self.currentIndex == 0:
 239                                 from Components.config import configfile
 240                                 configfile.save()
 241                         config = attributes["config"][self.currentIndex]
 242                         self.mergeConfig(config["directory"], config["name"])
 243                 elif currentAttribute == "favourites":
 244                         favourite = attributes["favourites"][self.currentIndex]
 245                         self.installFavourites(favourite["directory"], favourite["name"])
 246                 elif currentAttribute == "package":
 247                         package = attributes["package"][self.currentIndex]
 248                         self.installIPK(package["directory"], package["name"])
 249                 elif currentAttribute == "services":
 250                         service = attributes["services"][self.currentIndex]
 251                         self.mergeServices(service["directory"], service["name"])
 252
 253         def readfile(self, filename):
 254                 if not os.path.isfile(filename):
 255                         return []
 256                 fd = open(filename)
 257                 lines = fd.readlines()
 258                 fd.close()
 259                 return lines
 260
 261         def mergeConfig(self, directory, name, merge = True):
 262                 print "merging config:", directory, " - ", name
 263                 if os.path.isfile(directory + name):
 264                         config.loadFromFile(directory + name)
 265                         configfile.save()
 266                 self.installNext()
 267
 268         def installIPK(self, directory, name):
 269                 if self.blocking:
 270                         os.system("ipkg install " + directory + name)
 271                         self.installNext()
 272                 else:
 273                         self.ipkg = IpkgComponent()
 274                         self.ipkg.addCallback(self.ipkgCallback)
 275                         self.ipkg.startCmd(IpkgComponent.CMD_INSTALL, {'package': directory + name})
 276
 277         def ipkgCallback(self, event, param):
 278                 print "ipkgCallback"
 279                 if event == IpkgComponent.EVENT_DONE:
 280                         self.installNext()
 281                 elif event == IpkgComponent.EVENT_ERROR:
 282                         self.installNext()
 283
 284         def installSkin(self, directory, name):
 285                 print "installing skin:", directory, " - ", name
 286                 print "cp -a %s %s" % (directory, resolveFilename(SCOPE_SKIN))
 287                 if self.blocking:
 288                         os.system("cp -a %s %s" % (directory, resolveFilename(SCOPE_SKIN)))
 289                         self.installNext()
 290                 else:
 291                         if self.console.execute("cp -a %s %s" % (directory, resolveFilename(SCOPE_SKIN))):
 292                                 print "execute failed"
 293                                 self.installNext()
 294
 295         def mergeServices(self, directory, name, merge = False):
 296                 print "merging services:", directory, " - ", name
 297                 if os.path.isfile(directory + name):
 298                         db = eDVBDB.getInstance()
 299                         db.reloadServicelist()
 300                         db.loadServicelist(directory + name)
 301                         db.saveServicelist()
 302                 self.installNext()
 303
 304         def installFavourites(self, directory, name):
 305                 print "installing favourites:", directory, " - ", name
 306
 307                 if self.blocking:
 308                         os.system("cp %s %s" % ((directory + name), resolveFilename(SCOPE_CONFIG)))
 309                         self.installNext()
 310                 else:
 311                         if self.console.execute("cp %s %s" % ((directory + name), resolveFilename(SCOPE_CONFIG))):
 312                                 print "execute failed"
 313                                 self.installNext()