| | 1216 | |
| | 1217 | def genBanner(self, bannerfileorcommand) : |
| | 1218 | """Reads a banner or generates one through an external command. |
| | 1219 | |
| | 1220 | Returns the banner's content in a format which MUST be accepted |
| | 1221 | by the printer. |
| | 1222 | """ |
| | 1223 | banner = "" # no banner by default |
| | 1224 | if bannerfileorcommand : |
| | 1225 | if (os.access(bannerfileorcommand, os.X_OK)) : |
| | 1226 | self.logdebug("Launching %s to generate a banner." % bannerfileorcommand) |
| | 1227 | child = popen2.Popen3(bannerfileorcommand, capturestderr=1) |
| | 1228 | child.tochild.close() |
| | 1229 | child.childerr.close() |
| | 1230 | banner = child.fromchild.read() |
| | 1231 | child.fromchild.close() |
| | 1232 | status = child.wait() |
| | 1233 | if os.WIFEXITED(status) : |
| | 1234 | status = os.WEXITSTATUS(status) |
| | 1235 | self.printInfo(_("Banner generator %s exit code is %s") % (bannerfileorcommand, str(status))) |
| | 1236 | else : |
| | 1237 | self.logdebug("Using %s as the banner." % bannerfileorcommand) |
| | 1238 | try : |
| | 1239 | fh = open(bannerfileorcommand, 'r') |
| | 1240 | except IOError, msg : |
| | 1241 | self.printInfo("Impossible to open %s : %s" % (bannerfileorcommand, msg), "error") |
| | 1242 | else : |
| | 1243 | banner = fh.read() |
| | 1244 | fh.close() |
| | 1245 | return cStringIO.StringIO(banner) |
| | 1246 | |
| | 1247 | def startingBanner(self, printername) : |
| | 1248 | """Retrieves a starting banner for current printer and returns its content.""" |
| | 1249 | self.logdebug("Retrieving starting banner...") |
| | 1250 | return self.genBanner(self.config.getStartingBanner(printername)) |
| | 1251 | |
| | 1252 | def endingBanner(self, printername) : |
| | 1253 | """Retrieves an ending banner for current printer and returns its content.""" |
| | 1254 | self.logdebug("Retrieving ending banner...") |
| | 1255 | return self.genBanner(self.config.getEndingBanner(printername)) |
