def init(directory):
try: #try to create the directory, throw OSError otherwise
objectFilePath = os.path.join(directory, 'objects')
indexFilePath = os.path.join(directory, 'index.txt')
if not os.path.isdir(objectFilePath): #checks if the objects directory has been created. If not, creates directory
os.makedirs(os.path.join(directory, 'objects'))
if not os.path.exists(indexFilePath): #checks if the index file has been created. If not, creates file
open(indexFilePath, 'a')
utilities.saveIndex(directory, {})
print "Archive directory created with subdirectory 'objects' and file 'index.txt' in " + directory
else:
print "Backup already intialised"
except OSError: #throws an OSError if something went wrong with the creation of directory or files
print "Error: Could not create directories or files"
except OSError as (errno, strerror):
print "Failed to load archive index at '"+archiveDir+"': "+strerror;
return;
except IOError as (errno, strerror):
print "Failed to load archive index at '"+archiveDir+"': "+strerror;
return;
objectsDir = os.path.join(archiveDir, "objects");
for root, dirs, files in os.walk(dirToBackup):
for name in files:
try:
backupFile(objectsDir, os.path.join(root, name), index, logger);
except OSError as (errno, strerror):
print "Failed to backup file '"+name+"': "+strerror;
except IOError as (errno, strerror):
print "Failed to backup file '"+name+"': "+strerror;
utilities.saveIndex(archiveDir, index);
else:
print "The backup archive has not been created! Use 'mybackup init' to initialise the directory before calling 'store'.";
def backupFile (archiveDir, fileName, index, logger):
fileHash = utilities.createFileSignature(fileName)[2];
if (index.has_key(fileName)):
if (index[fileName] == fileHash):
logger.debug("Backup file '"+fileName+"' already exists and is up-to-date; skipping.");
return;
#Check whether the file is already in the index
#If so, remove the existing file
canRemove = True;
for key, value in index.items():
if (value == fileHash and key != fileName):