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import os, time
import collections
from pygit2 import init_repository, Signature
from binascii import b2a_hex
class Fit:
def __init__(self, path):
self.repo = init_repository(path, True)
def get_file(self, oid):
""" Returns the actual data of a git object """
return self.repo[oid].data
def get_modules(self):
""" returns a list of all modules """
return [x[0] for x in self._list()]
def get_module(self, module):
""" gets all entries for a module grouped by years """
years = self._list(module)
return [(year[0], self._list(os.path.join(module, year[0]))) for year in years]
def add_file(self, data, path):
""" Inserts the given file in the git tree and commits the changes """
try:
commit = self._get_last_commit()
parents = [commit.oid]
root = commit.tree.oid
except:
parents = []
root = None
blob_oid = self.repo.create_blob(data)
tree = self._insert_node(blob_oid, path, root)
author = committer = Signature('Fit', 'Fit@fit.de', int(time.time()), 120)
commit = self.repo.create_commit(
'HEAD',
author,
committer,
'added %s' % path,
tree,
parents
)
# save the actual head sha for dump git http protocol
# similiar to `git update-server-info`
info_refs_path = os.path.join(self.repo.path, 'info', 'refs')
with open(info_refs_path, 'w') as f:
f.write('%s\trefs/heads/master\n' % b2a_hex(commit).decode('ascii'))
return b2a_hex(blob_oid).decode('ascii')
def _insert_node(self, node_oid, path, root_oid):
""" Inserts a new Node in a Git Tree graph """
if root_oid:
root = self.repo.TreeBuilder(root_oid)
current_node = self.repo[root_oid]
else:
root = self.repo.TreeBuilder()
current_node = self.repo[root.write()]
# entire path
dir_path = path.split(os.sep)[:-1]
# search for existing nodes in path
existing_builders = [(os.sep, root)]
for dir_entry in dir_path:
try:
new_oid = current_node[str(dir_entry)].oid
current_node = self.repo[new_oid]
existing_builders.append((
dir_entry, self.repo.TreeBuilder(current_node)
))
except KeyError:
break
# directories to create
new_path = dir_path[len(existing_builders)-1:]
# inserts blob object
filename = os.path.basename(path)
if len(new_path) > 0:
builder = self.repo.TreeBuilder()
pre = filename
else:
last_dir = existing_builders.pop()
builder = last_dir[1]
pre = last_dir[0]
builder.insert(filename, node_oid, 0100644)
current_tree_oid = builder.write()
# create new nodes bottom-up for our node
if len(new_path) > 0:
pre = new_path.pop(0)
for entry in reversed(new_path):
builder = self.repo.TreeBuilder()
builder.insert(entry, current_tree_oid, 040000)
current_tree_oid = builder.write()
# connect existing nodes with created nodes
for name, builder in reversed(existing_builders):
builder.insert(pre, current_tree_oid, 040000)
current_tree_oid = builder.write()
pre = name
return current_tree_oid
def _get_last_commit(self):
head = self.repo.lookup_reference('HEAD').resolve()
return self.repo[head.oid]
def _list(self, path=None):
""" Lists all entries for a given path """
try:
commit = self._get_last_commit()
tree = commit.tree
if path:
for p in path.split('/'):
tree = tree[p].to_object()
return [(x.name, x.hex) for x in tree]
except:
return []
#fit = Fit('static/fit.git')
#fit.add_file('main.c', 'alp3/2007/main.c')
#fit.add_file('main.c', 'alp3/2008/main.c')
#fit.add_file('main.c', 'alp3/2009/main.c')
#
#print('All modules')
#for name in fit.get_modules():
# print('\t' + name)
#
#print('Module: alp4')
#for (year,items) in fit.get_module('alp4'):
# print('\t' + year)
# for name in items:
# print('\t\t' + name)
#
#for name, oid in fit.list('tags/aws'):
# print(name)
#
#print("All files")
#for name, oid in fit.list_directories():
# print(name)
#tags = ','.join(map(lambda x: x[0], fit.get_file_with_tags(oid)))
#print("* %s (%s)" % (name, tags))
#print(fit.get_file(oid) + "\n")
#
#print("\nAll tags")
#for name, oid in fit.get_all_tags():
# files = ','.join(map(lambda x: x[0], fit.get_files_for_tags([name])))
# print("* %s (%s)" % (name, files))
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