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-rw-r--r--pomu/repo/remote/remote.py28
-rw-r--r--pomu/util/git.py46
2 files changed, 74 insertions, 0 deletions
diff --git a/pomu/repo/remote/remote.py b/pomu/repo/remote/remote.py
new file mode 100644
index 0000000..e177f68
--- /dev/null
+++ b/pomu/repo/remote/remote.py
@@ -0,0 +1,28 @@
+"""A template class for remote repos"""
+
+
+class RemoteRepo():
+ """A class responsible for remotes"""
+ def __init__(self, url):
+ self.uri = uri
+ raise NotImplementedError()
+
+ def fetch_package(self, name, category=None, version=None):
+ """Fetches a package, determined by the parametres"""
+ raise NotImplementedError()
+
+ def list_cpvs(self):
+ """Gets a list of all pebuilds in the repo"""
+ raise NotImplementedError()
+
+ def fetch_tree(self):
+ """Returns repos hierarchy"""
+ raise NotImplementedError()
+
+ def fetch_subtree(self, key):
+ """Lists a subtree"""
+ raise NotImplementedError()
+
+ def fetch_file(self, key):
+ """Fetches a file from the repo"""
+ raise NotImplementedError()
diff --git a/pomu/util/git.py b/pomu/util/git.py
new file mode 100644
index 0000000..4c3e2ed
--- /dev/null
+++ b/pomu/util/git.py
@@ -0,0 +1,46 @@
+"""Miscellaneous utility functions for git structures"""
+
+from base64 import b16encode
+
+from pomu.util.result import Result
+
+def parse_tree(blob):
+ """Parses a git tree"""
+ res = []
+ leng, _, tree = blob.partition('\0')
+ if not tree:
+ return Result.Err('Invalid tree')
+ while len(data) > 0:
+ data = data[7:] # strip access code
+ name, _, data = data.partition('\0')
+ sha = b16encode(data[0:20]).decode('utf-8')
+ data = data[20:]
+ if not name or not sha:
+ return Result.Err()
+ res.append((sha, name))
+ return Result.Ok(res)
+
+def parse_blob(blob):
+ """Parses a git blob"""
+ data = zlib.decompress(blob)
+ leng, _, data = data.partition('\0')
+ if not leng or not data:
+ return Result.Err()
+
+def commit_head(blob):
+ if not blob[7:] == 'commit ':
+ return Result.Err()
+ l = blob.split('\n')[0]
+ cid, _, tid = l.partition('\0')
+ if not tid[0:5] == 'tree ':
+ return Result.Err()
+ return tid[5:]
+
+def parse_object(obj):
+ """Parses a git object"""
+ data = zlib.decompress(obj)
+ if data[0:5] == 'blob ':
+ return parse_blob(data[5:])
+ elif data[0:5] == 'tree ':
+ return parse_tree(data[5:])
+ return Result.Err('Unsupported object type')