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# blob.py
# Copyright (C) 2008, 2009 Michael Trier (mtrier@gmail.com) and contributors
#
# This module is part of GitPython and is released under
# the BSD License: http://www.opensource.org/licenses/bsd-license.php
import mimetypes
import os
import re
import time
from actor import Actor
from commit import Commit
class Blob(object):
"""A Blob encapsulates a git blob object"""
DEFAULT_MIME_TYPE = "text/plain"
def __init__(self, repo, id, mode=None, name=None):
"""
Create an unbaked Blob containing just the specified attributes
``repo``
is the Repo
``id``
is the git object id
``mode``
is the file mode
``name``
is the file name
Returns
git.Blob
"""
self.repo = repo
self.id = id
self.mode = mode
self.name = name
self._size = None
self.data_stored = None
@property
def size(self):
"""
The size of this blob in bytes
Returns
int
NOTE
The size will be cached after the first access
"""
if self._size is None:
self._size = int(self.repo.git.cat_file(self.id, s=True).rstrip())
return self._size
@property
def data(self):
"""
The binary contents of this blob.
Returns
str
NOTE
The data will be cached after the first access.
"""
self.data_stored = self.data_stored or self.repo.git.cat_file(self.id, p=True, with_raw_output=True)
return self.data_stored
@property
def mime_type(self):
"""
The mime type of this file (based on the filename)
Returns
str
NOTE
Defaults to 'text/plain' in case the actual file type is unknown.
"""
guesses = None
if self.name:
guesses = mimetypes.guess_type(self.name)
return guesses and guesses[0] or self.DEFAULT_MIME_TYPE
@property
def basename(self):
"""
Returns
The basename of the Blobs file name
"""
return os.path.basename(self.name)
@classmethod
def blame(cls, repo, commit, file):
"""
The blame information for the given file at the given commit
Returns
list: [git.Commit, list: [<line>]]
A list of tuples associating a Commit object with a list of lines that
changed within the given commit. The Commit objects will be given in order
of appearance.
"""
data = repo.git.blame(commit, '--', file, p=True)
commits = {}
blames = []
info = None
for line in data.splitlines():
parts = re.split(r'\s+', line, 1)
if re.search(r'^[0-9A-Fa-f]{40}$', parts[0]):
if re.search(r'^([0-9A-Fa-f]{40}) (\d+) (\d+) (\d+)$', line):
m = re.search(r'^([0-9A-Fa-f]{40}) (\d+) (\d+) (\d+)$', line)
id, origin_line, final_line, group_lines = m.groups()
info = {'id': id}
blames.append([None, []])
elif re.search(r'^([0-9A-Fa-f]{40}) (\d+) (\d+)$', line):
m = re.search(r'^([0-9A-Fa-f]{40}) (\d+) (\d+)$', line)
id, origin_line, final_line = m.groups()
info = {'id': id}
elif re.search(r'^(author|committer)', parts[0]):
if re.search(r'^(.+)-mail$', parts[0]):
m = re.search(r'^(.+)-mail$', parts[0])
info["%s_email" % m.groups()[0]] = parts[-1]
elif re.search(r'^(.+)-time$', parts[0]):
m = re.search(r'^(.+)-time$', parts[0])
info["%s_date" % m.groups()[0]] = time.gmtime(int(parts[-1]))
elif re.search(r'^(author|committer)$', parts[0]):
m = re.search(r'^(author|committer)$', parts[0])
info[m.groups()[0]] = parts[-1]
elif re.search(r'^filename', parts[0]):
info['filename'] = parts[-1]
elif re.search(r'^summary', parts[0]):
info['summary'] = parts[-1]
elif parts[0] == '':
if info:
c = commits.has_key(info['id']) and commits[info['id']]
if not c:
c = Commit(repo, id=info['id'],
author=Actor.from_string(info['author'] + ' ' + info['author_email']),
authored_date=info['author_date'],
committer=Actor.from_string(info['committer'] + ' ' + info['committer_email']),
committed_date=info['committer_date'],
message=info['summary'])
commits[info['id']] = c
m = re.search(r'^\t(.*)$', line)
text, = m.groups()
blames[-1][0] = c
blames[-1][1].append( text )
info = None
return blames
def __repr__(self):
return '<git.Blob "%s">' % self.id
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