def get_lineno_last_page(self, fileobj, runner):
if not fileobj.filename or not exists(runner.dump_dir.filename_public_path(fileobj)):
return None
dumpfile = DumpFile(self.wiki,
runner.dump_dir.filename_public_path(fileobj, self.wiki.date),
fileobj, self.verbose)
pipeline = dumpfile.setup_uncompression_command()
grep = self.wiki.config.grep
if not exists(grep):
raise BackupError("grep command %s not found" % grep)
pipeline.append([grep, "-n", "<page>"])
tail = self.wiki.config.tail
if not exists(tail):
raise BackupError("tail command %s not found" % tail)
pipeline.append([tail, "-1"])
# without shell
proc = CommandPipeline(pipeline, quiet=True)
proc.run_pipeline_get_output()
if (proc.exited_successfully() or
(proc.get_failed_cmds_with_retcode() ==
[[-signal.SIGPIPE, pipeline[0]]]) or
(proc.get_failed_cmds_with_retcode() ==
[[signal.SIGPIPE + 128, pipeline[0]]])):
output = proc.output()
# 339915646: <page>
if ':' in output:
linecount = output.split(':')[0]
if linecount.isdigit():
return linecount
return None
def get_last_lines_from_n(self, fileobj, runner, count):
if not fileobj.filename or not exists(runner.dump_dir.filename_public_path(fileobj)):
return None
dumpfile = DumpFile(self.wiki,
runner.dump_dir.filename_public_path(fileobj, self.wiki.date),
fileobj, self.verbose)
pipeline = dumpfile.setup_uncompression_command()
tail = self.wiki.config.tail
if not exists(tail):
raise BackupError("tail command %s not found" % tail)
tail_esc = MiscUtils.shell_escape(tail)
pipeline.append([tail, "-n", "+%s" % count])
# without shell
proc = CommandPipeline(pipeline, quiet=True)
proc.run_pipeline_get_output()
if (proc.exited_successfully() or
(proc.get_failed_cmds_with_retcode() ==
[[-signal.SIGPIPE, pipeline[0]]]) or
(proc.get_failed_cmds_with_retcode() ==
[[signal.SIGPIPE + 128, pipeline[0]]])):
last_lines = proc.output()
return last_lines
