Mercurial > gcp
annotate gcp @ 8:144cb2669f21
removed some forgotten TODO
| author | Goffi <goffi@goffi.org> |
|---|---|
| date | Mon, 27 Sep 2010 17:33:25 +0800 |
| parents | a110d31482f7 |
| children | 599b84e4ff01 |
| rev | line source |
|---|---|
| 0 | 1 #!/usr/bin/python |
| 2 # -*- coding: utf-8 -*- | |
| 3 | |
| 4 """ | |
| 5 gcp: Goffi's CoPier | |
| 6 Copyright (C) 2010 Jérôme Poisson (goffi@goffi.org) | |
| 7 | |
| 8 This program is free software: you can redistribute it and/or modify | |
| 9 it under the terms of the GNU General Public License as published by | |
| 10 the Free Software Foundation, either version 3 of the License, or | |
| 11 (at your option) any later version. | |
| 12 | |
| 13 This program is distributed in the hope that it will be useful, | |
| 14 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 16 GNU General Public License for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 19 along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 20 """ | |
| 21 | |
| 22 ### logging ### | |
| 23 import logging | |
| 24 from logging import debug, info, error, warning | |
|
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25 logging.basicConfig(level=logging.INFO, |
| 0 | 26 format='%(message)s') |
| 27 ### | |
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28 |
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29 import gettext |
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30 gettext.install('gcp', "i18n", unicode=True) |
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31 |
| 0 | 32 import sys |
| 33 import os,os.path | |
| 34 from optparse import OptionParser #To be replaced by argparse ASAP | |
| 1 | 35 import cPickle as pickle |
| 0 | 36 try: |
| 37 import gobject | |
| 38 #DBus | |
| 39 import dbus, dbus.glib | |
| 40 import dbus.service | |
| 41 import dbus.mainloop.glib | |
| 42 except ImportError,e: | |
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43 error(_("Error during import")) |
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44 error(_("Please check dependecies:"),e) |
| 0 | 45 exit(2) |
| 46 try: | |
| 47 from progressbar import ProgressBar, Percentage, Bar, ETA, FileTransferSpeed | |
| 48 pbar_available=True | |
| 49 except ImportError, e: | |
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50 info (_('ProgressBar not available, please download it at http://pypi.python.org/pypi/progressbar')) |
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51 info (_('Progress bar deactivated\n--\n')) |
| 0 | 52 pbar_available=False |
| 53 | |
| 54 NAME = "gcp (Goffi's copier)" | |
| 55 NAME_SHORT = "gcp" | |
| 56 VERSION = '0.1' | |
| 57 | |
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58 ABOUT = NAME+u" v"+VERSION+u""" (c) Jérôme Poisson (aka Goffi) 2010 |
| 0 | 59 |
| 60 --- | |
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61 """+NAME+u""" Copyright (C) 2010 Jérôme Poisson |
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62 """ + _(u"""This program comes with ABSOLUTELY NO WARRANTY; |
| 0 | 63 This is free software, and you are welcome to redistribute it |
| 64 under certain conditions. | |
| 65 --- | |
| 66 | |
| 67 This software is an advanced file copier | |
| 68 Get the latest version at http://www.goffi.org | |
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69 """) |
| 0 | 70 |
| 71 const_DBUS_INTERFACE = "org.goffi.gcp" | |
| 3 | 72 const_DBUS_PATH = "/org/goffi/gcp" |
| 73 const_BUFF_SIZE = 4096 | |
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74 const_PRESERVE = set(['mode','ownership','timestamps']) |
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75 const_JOURNAL_PATH = "~/.gcp_journal" |
| 0 | 76 |
| 77 | |
| 78 class DbusObject(dbus.service.Object): | |
| 79 | |
| 80 def __init__(self, gcp, bus, path): | |
| 81 self._gcp = gcp | |
| 82 dbus.service.Object.__init__(self, bus, path) | |
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83 debug(_("Init DbusObject...")) |
| 0 | 84 self.cb={} |
| 85 | |
| 86 @dbus.service.method(const_DBUS_INTERFACE, | |
| 87 in_signature='', out_signature='s') | |
| 88 def getVersion(self): | |
| 89 """Get gcp version | |
| 90 @return: version as string""" | |
| 91 return VERSION | |
| 92 | |
| 93 @dbus.service.method(const_DBUS_INTERFACE, | |
| 1 | 94 in_signature='ss', out_signature='bs') |
| 0 | 95 def addArgs(self, source_path, args): |
| 96 """Add arguments to gcp as if there were entered on its own command line | |
| 1 | 97 @param source_path: current working dir to use as base for arguments, as given by os.getcwd() |
| 98 @param args: serialized (wich pickle) list of strings - without command name -, as given by sys.argv[1:]. | |
| 99 @return: success (boolean) and error message if any (string)""" | |
| 100 try: | |
| 101 args = pickle.loads(str(args)) | |
| 102 except TypeError, pickle.UnpicklingError: | |
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103 return (False, _("INTERNAL ERROR: invalid arguments")) |
| 0 | 104 return self._gcp.parseArguments(args, source_path) |
| 105 | |
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106 class Journal(): |
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107 def __init__(self, path=const_JOURNAL_PATH): |
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108 self.journal_path = os.path.expanduser(path) |
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109 self.journal_fd = open(self.journal_path,'w') #TODO: check and maybe save previous journals |
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110 |
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111 def __del__(self): |
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112 self.journal_fd.flush() |
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113 self.journal_fd.close() |
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114 |
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115 def startFile(self, source_path): |
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116 """Start an entry in the journal""" |
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117 self.journal_fd.write(source_path+"\n") |
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118 self.journal_fd.flush() |
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119 self.success=True |
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120 self.errors=[] |
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121 |
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122 def closeFile(self): |
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123 """Close the entry in the journal""" |
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124 if not self.success: |
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125 status = "FAILED" |
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126 else: |
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127 status = "OK" if not self.errors else "PARTIAL" |
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128 self.journal_fd.write("%(status)s: %(errors)s\n" % {'status': status, 'errors': ', '.join(self.errors)}) |
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129 self.journal_fd.flush() |
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130 |
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131 def copyFailed(self): |
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132 """Must be called when something is wrong with the copy itself""" |
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133 self.success = False |
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134 |
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135 def error(self, name): |
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136 """Something went wrong""" |
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137 self.errors.append(name) |
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138 |
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139 |
| 0 | 140 class GCP(): |
| 141 | |
| 142 def __init__(self): | |
| 143 try: | |
| 144 sessions_bus = dbus.SessionBus() | |
| 145 db_object = sessions_bus.get_object(const_DBUS_INTERFACE, | |
| 146 const_DBUS_PATH) | |
| 147 self.gcp_main = dbus.Interface(db_object, | |
| 148 dbus_interface=const_DBUS_INTERFACE) | |
| 149 self._main_instance = False | |
| 150 | |
| 151 except dbus.exceptions.DBusException,e: | |
| 152 if e._dbus_error_name=='org.freedesktop.DBus.Error.ServiceUnknown': | |
| 153 self.launchDbusMainInstance() | |
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154 debug (_("gcp launched")) |
| 0 | 155 self._main_instance = True |
| 3 | 156 self.buffer_size = const_BUFF_SIZE |
| 0 | 157 else: |
| 158 raise e | |
| 159 | |
| 160 def launchDbusMainInstance(self): | |
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161 debug (_("Init DBus...")) |
| 0 | 162 session_bus = dbus.SessionBus() |
| 163 self.dbus_name = dbus.service.BusName(const_DBUS_INTERFACE, session_bus) | |
| 164 self.dbus_object = DbusObject(self, session_bus, const_DBUS_PATH) | |
| 165 | |
| 166 self.copy_list = [] | |
| 167 self.mounts = self.__getMountPoints() | |
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168 self.bytes_total = 0 |
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169 self.bytes_copied = 0 |
| 0 | 170 |
| 171 def getFsType(self, path): | |
| 6 | 172 fs = '' |
| 173 last_mount_point = '' | |
| 0 | 174 for mount in self.mounts: |
| 6 | 175 if path.startswith(mount) and len(mount)>=len(last_mount_point): |
| 0 | 176 fs = self.mounts[mount] |
| 6 | 177 last_mount_point = mount |
| 0 | 178 return fs |
| 179 | |
| 180 def __getMountPoints(self): | |
| 181 """Parse /proc/mounts to get currently mounted devices""" | |
| 182 #TODO: reparse when a new device is added/a device is removed | |
| 1 | 183 #(check freedesktop mounting signals) |
| 0 | 184 ret = {} |
| 185 try: | |
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186 with open("/proc/mounts",'rb') as mounts: |
| 0 | 187 for line in mounts.readlines(): |
| 188 fs_spec, fs_file, fs_vfstype, fs_mntops, fs_freq, fs_passno = line.split(' ') | |
| 189 ret[fs_file] = fs_vfstype | |
| 190 except: | |
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191 error (_("Can't read mounts table")) |
| 0 | 192 return ret |
| 193 | |
| 3 | 194 def __appendToList(self, path, dest_path, options): |
| 0 | 195 """Add a file to the copy list |
| 196 @param path: absolute path of file | |
| 197 @param options: options as return by optparse""" | |
| 6 | 198 debug ("Adding to copy list: %(path)s ==> %(dest_path)s (%(fs_type)s)" % {"path":path, |
| 199 "dest_path":dest_path, | |
| 200 "fs_type":self.getFsType(dest_path)} ) | |
| 1 | 201 try: |
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202 self.bytes_total+=os.path.getsize(path) |
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203 self.copy_list.insert(0,(path, dest_path, options)) |
| 1 | 204 except OSError,e: |
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205 error(_("Can't copy %(path)s: %(exception)s") % {'path':path, 'exception':e.strerror}) |
| 0 | 206 |
| 1 | 207 |
| 3 | 208 def __appendDirToList(self, dirpath, dest_path, options): |
| 0 | 209 """Add recursively directory to the copy list |
| 210 @param path: absolute path of dir | |
| 211 @param options: options as return by optparse""" | |
| 3 | 212 #We first check that the dest path exists, and create it if needed |
| 6 | 213 dest_path = self.__filename_fix(dest_path, options) |
| 3 | 214 if not os.path.exists(dest_path): |
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215 debug (_("Creating directory %s") % dest_path) |
| 3 | 216 os.makedirs(dest_path) #TODO: check permissions |
| 217 #TODO: check that dest_path is an accessible dir, | |
| 218 # and skip file/write error in log if needed | |
| 0 | 219 try: |
| 220 for filename in os.listdir(dirpath): | |
| 221 filepath = os.path.join(dirpath,filename) | |
| 222 if os.path.isdir(filepath): | |
| 3 | 223 full_dest_path = os.path.join(dest_path,filename) |
| 224 self.__appendDirToList(filepath, full_dest_path, options) | |
| 0 | 225 else: |
| 3 | 226 self.__appendToList(filepath, dest_path, options) |
| 0 | 227 except OSError,e: |
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228 error(_("Can't copy %(path)s: %(exception)s") % {'path':dirpath, 'exception':e.strerror}) |
| 0 | 229 |
| 230 def __checkArgs(self, options, source_path, args): | |
| 231 """Check thats args are files, and add them to copy list""" | |
| 1 | 232 assert(len (args)>=2) |
| 233 try: | |
| 3 | 234 dest_path = os.path.normpath(os.path.join(os.path.expanduser(source_path), args.pop())) |
| 1 | 235 except OSError,e: |
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236 error (_("Invalid dest_path: %s"),e) |
| 1 | 237 |
| 0 | 238 for path in args: |
| 1 | 239 abspath = os.path.normpath(os.path.join(os.path.expanduser(source_path), path)) |
| 0 | 240 if not os.path.exists(abspath): |
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241 warning(_("The path given in arg doesn't exist or is not accessible: %s") % abspath) |
| 0 | 242 else: |
| 243 if os.path.isdir(abspath): | |
| 3 | 244 full_dest_path = dest_path if os.path.isabs(path) else os.path.normpath(os.path.join(dest_path, path)) |
| 0 | 245 if not options.recursive: |
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246 warning (_('omitting directory "%s"') % abspath) |
| 0 | 247 else: |
| 3 | 248 self.__appendDirToList(abspath, full_dest_path, options) |
| 0 | 249 else: |
| 3 | 250 self.__appendToList(abspath, dest_path, options) |
| 0 | 251 |
| 3 | 252 def __copyNextFile(self): |
| 253 """Take the last file in the list, and launch the copy using glib io_watch event | |
| 254 @return: True a file was added, False else""" | |
| 255 if self.copy_list: | |
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256 source_file, dest_path, options = self.copy_list.pop() |
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257 self.journal.startFile(source_file) |
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258 source_fd = open(source_file, 'rb') |
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259 filename = os.path.basename(source_file) |
| 3 | 260 assert(filename) |
| 6 | 261 dest_file = self.__filename_fix(os.path.join(dest_path,filename),options) |
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262 if os.path.exists(dest_file) and not options.force: |
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263 warning (_("File [%s] already exists, skipping it !") % dest_file) |
| 3 | 264 return True |
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265 try: |
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266 dest_fd = open(dest_file, 'wb') |
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267 except: |
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268 self.journal.copyFailed() |
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269 self.journal.error("can't open dest") |
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270 self.journal.closeFile() |
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271 source_fd.close() |
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272 return True |
| 3 | 273 |
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274 gobject.io_add_watch(source_fd,gobject.IO_IN,self._copyFile, |
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275 (dest_fd, options), priority=gobject.PRIORITY_HIGH) |
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276 if not self.progress: |
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277 info(_("COPYING %(source)s ==> %(dest)s") % {"source":source_path,"dest":dest_file}) |
| 3 | 278 return True |
| 279 else: | |
| 280 #Nothing left to copy, we quit | |
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281 if self.progress: |
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282 self.__pbar_finish() |
| 3 | 283 self.loop.quit() |
| 284 | |
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285 def __copyFailed(self, reason, source_fd, dest_fd): |
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286 """Write the failure in the journal and close files descriptors""" |
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287 self.journal.copyFailed() |
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288 self.journal.error(reason) |
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289 self.journal.closeFile() |
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290 source_fd.close() |
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291 dest_fd.close() |
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292 |
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293 |
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294 |
| 3 | 295 def _copyFile(self, source_fd, condition, data): |
| 296 """Actually copy the file, callback used with io_add_watch | |
| 297 @param source_fd: file descriptor of the file to copy | |
| 298 @param condition: condition which launched the callback (glib.IO_IN) | |
| 299 @param data: tuple with (destination file descriptor, copying options)""" | |
| 300 dest_fd,options = data | |
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301 |
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302 try: |
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303 buff = source_fd.read(self.buffer_size) |
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304 except: |
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305 self.__copyFailed("can't read source", source_fd, dest_fd) |
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306 return False |
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307 |
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308 try: |
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309 dest_fd.write(buff) |
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310 except: |
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311 self.__copyFailed("can't write to dest", source_fd, dest_fd) |
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312 return False |
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313 |
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314 self.bytes_copied += len(buff) |
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315 if self.progress: |
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316 self.__pbar_update() |
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317 |
| 3 | 318 if len(buff) != self.buffer_size: |
| 319 source_fd.close() | |
| 320 dest_fd.close() | |
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321 self.__post_copy(source_fd.name, dest_fd.name, options) |
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322 self.journal.closeFile() |
| 3 | 323 return False |
| 324 return True | |
| 325 | |
| 6 | 326 def __filename_fix(self, filename, options): |
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327 """Fix filenames incompatibilities/mistake according to options |
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328 @param filename: full path to the file |
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329 @param options: options as parsed on command line |
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330 @return: fixed filename""" |
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331 fixed_filename = filename |
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332 |
| 6 | 333 if self.getFsType(filename) == 'vfat' and options.fs_fix: |
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334 fixed_filename = filename.replace('\\','_')\ |
| 6 | 335 .replace(':',';')\ |
| 336 .replace('*','+')\ | |
| 337 .replace('?','')\ | |
| 338 .replace('"','\'')\ | |
| 339 .replace('<','[')\ | |
| 340 .replace('>',']')\ | |
| 341 .replace('|','!') | |
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342 |
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343 if fixed_filename != filename: |
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344 self.journal.error('filename fixed') |
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345 return fixed_filename |
| 6 | 346 |
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347 def __post_copy(self, source_file, dest_file, options): |
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348 """Do post copy traitement (mainly managing --preserve option)""" |
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349 st_mode, st_ino, st_dev, st_nlink, st_uid, st_gid, st_size, st_atime, st_mtime, st_ctime = os.stat(source_file) |
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350 for preserve in options.preserve: |
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351 try: |
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352 if preserve == 'mode': |
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353 os.chmod(dest_file, st_mode) |
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354 elif preserve == 'ownership': |
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355 os.chown(dest_file, st_uid, st_gid) |
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356 elif preserve == 'timestamps': |
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357 os.utime(dest_file, (st_atime, st_mtime)) |
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358 except OSError,e: |
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359 self.journal.error("preserve-"+preserve) |
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360 |
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361 def __pbar_update(self): |
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362 """Update progress bar position, create the bar if it doesn't exist""" |
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363 assert(self.progress) |
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364 try: |
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365 if self.pbar.maxval != self.bytes_total: |
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366 self.pbar.maxval = self.bytes_total |
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367 except AttributeError: |
| 6 | 368 if not self.bytes_total: |
| 369 #No progress bar if the files have a null size | |
| 370 return | |
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371 self.pbar = ProgressBar(self.bytes_total,[_("Progress: "),Percentage()," ",Bar()," ",FileTransferSpeed()," ",ETA()]) |
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372 self.pbar.start() |
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373 self.pbar.update(self.bytes_copied) |
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374 |
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375 def __pbar_finish(self): |
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376 """Mark the progression as finished""" |
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377 assert(self.progress) |
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378 try: |
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379 self.pbar.finish() |
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380 except AttributeError: |
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381 pass |
| 0 | 382 |
| 383 def parseArguments(self, full_args=sys.argv[1:], source_path = os.getcwd()): | |
| 1 | 384 """Parse arguments and add files to queue |
| 385 @param full_args: list of arguments strings (without program name) | |
| 386 @param source_path: path from where the arguments come, ad given by os.getcwd() | |
| 387 @return: a tuple (boolean, message) where the boolean is the success of the arguments | |
| 388 validation, and message is the error message to print when necessary""" | |
| 0 | 389 _usage=""" |
| 390 %prog [options] FILE1 [FILE2 ...] DEST | |
| 391 | |
| 392 %prog --help for options list | |
| 393 """ | |
| 1 | 394 for idx in range(len(full_args)): |
| 395 if isinstance(full_args[idx], unicode): | |
| 396 #We don't want unicode as some filenames can be invalid unicode | |
| 397 full_args[idx] = full_args[idx].encode('utf-8') | |
| 398 | |
| 0 | 399 parser = OptionParser(usage=_usage,version=ABOUT) |
| 400 | |
| 401 parser.add_option("-r", "--recursive", action="store_true", default=False, | |
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402 help=_("copy directories recursively")) |
| 0 | 403 |
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404 parser.add_option("-f", "--force", action="store_true", default=False, |
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405 help=_("force overwriting of existing files")) |
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406 |
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407 parser.add_option("--preserve", action="store", default='mode,ownership,timestamps', |
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408 help=_("preserve the specified attributes")) |
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409 |
| 6 | 410 parser.add_option("--no-unicode-fix", action="store_false", dest='unicode_fix', default=True, |
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411 help=_("don't fixe name encoding errors")) #TODO |
| 6 | 412 |
| 413 parser.add_option("--no-fs-fix", action="store_false", dest='fs_fix', default=True, | |
| 8 | 414 help=_("don't fixe filesystem name incompatibily")) |
| 6 | 415 |
| 3 | 416 parser.add_option("--no-progress", action="store_false", dest="progress", default=True, |
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417 help=_("deactivate progress bar")) |
| 3 | 418 |
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419 parser.add_option("-v", "--verbose", action="store_true", default=False, |
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420 help=_("Show what is currently done")) |
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421 |
| 0 | 422 (options, args) = parser.parse_args(full_args) |
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423 #options check |
| 3 | 424 if options.progress and not pbar_available: |
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425 warning (_("Progress bar is not available, deactivating")) |
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426 options.progress = self.progress = False |
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427 else: |
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428 self.progress = options.progress |
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429 |
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430 if options.verbose: |
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431 logging.getLogger().setLevel(logging.DEBUG) |
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432 |
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433 preserve = set(options.preserve.split(',')) |
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434 if not preserve.issubset(const_PRESERVE): |
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435 error (_("Invalide --preserve value\nvalid values are:")) |
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436 for value in const_PRESERVE: |
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437 error('- %s' % value) |
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438 exit(2) |
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439 else: |
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440 options.preserve = preserve |
| 0 | 441 |
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442 #if there is an other instance of gcp, we send options to it |
| 0 | 443 if not self._main_instance: |
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444 info (_("There is already one instance of %s running, pluging to it") % NAME_SHORT) |
| 1 | 445 #XXX: we have to serialize data as dbus only accept valid unicode, and filenames |
| 446 # can have invalid unicode. | |
| 447 return self.gcp_main.addArgs(os.getcwd(),pickle.dumps(full_args)) | |
| 0 | 448 else: |
| 1 | 449 if len(args) < 2: |
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450 _error_msg = _("Wrong number of arguments") |
| 1 | 451 return (False, _error_msg) |
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452 debug(_("adding args to gcp: %s"),args) |
| 0 | 453 self.__checkArgs(options, source_path, args) |
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454 self.journal = Journal() |
| 3 | 455 gobject.idle_add(self.__copyNextFile) |
| 1 | 456 return (True,'') |
| 0 | 457 |
| 458 def go(self): | |
| 1 | 459 """Launch main loop""" |
| 0 | 460 self.loop = gobject.MainLoop() |
| 461 try: | |
| 462 self.loop.run() | |
| 463 except KeyboardInterrupt: | |
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464 info(_("User interruption: good bye")) |
| 0 | 465 |
| 466 | |
| 467 if __name__ == "__main__": | |
| 468 gcp = GCP() | |
| 1 | 469 success,message = gcp.parseArguments() |
| 470 if not success: | |
| 471 error(message) | |
| 472 exit(1) | |
| 0 | 473 if gcp._main_instance: |
| 474 gcp.go() | |
| 475 |