def generate():
'''
Generate patch for specific branch.
'''
repo = Repo('.')
if repo.is_dirty:
abort('Working tree is dirty. Working tree must be clean to perform this operation.')
if confirm('Use master as base?'):
for branch in repo.branches:
if branch.name == 'master':
master = branch
else:
branch, master = prompt_branch_select(repo, 'Select base branch')
name, selected_branch = prompt_branch_select(repo)
while exists(path(name)):
name = prompt('Directory already exists: %s.\nWhat should I call this patch?'%path(name))
os.mkdir(path(name))
rawpath = join(path(name), 'raw.diff')
local('git diff --binary %s %s > %s'%(selected_branch.commit, master.commit, rawpath))
with open(rawpath, 'r') as raw:
changed = raw.read()
config = RawConfigParser()
config.add_section('target')
config.add_section('iteration')
config.set('target', 'branch', master.name)
config.set('target', 'commit', master.commit)
config.set('iteration', 'branch', selected_branch.name)
config.set('iteration', 'commit', selected_branch.commit)
print("Generated %s patch directory."%name)
diffs = Diff.list_from_string(repo, changed)
def filter(diff):
def match(pattern):
if fnmatch.fnmatch(diff.b_path, pattern):
return pattern
matches = [match for match in map(match, patterns) if not match is None]
if not bool(matches):
return diff
ignore = os.path.join(os.getcwd(), '.diffignore')
if os.path.exists(ignore):
patterns = open(ignore, 'r').read().split('\n')
diffs = [diff for diff in map(filter, diffs) if not diff is None]
binary_ext = ['.png', '.gif', '.jpg', '.jpeg', '.flv', '.swf','.zip', '.gz', '.rar', '.fla']
# TODO: change this to use git generated binary marker
binaries = [diff for diff in diffs if splitext(diff.b_path)[1] in binary_ext]
text = set(diffs) - set(binaries)
config.add_section('patch')
config.set('patch', 'binary', int(len(binaries) > 0))
config.set('patch', 'text', int(len(text) > 0))
print 'Generated patch config file'
if text:
text_patch = join(path(name), 'text.patch')
with open(text_patch, 'w') as pf:
for diff in text:
pf.write('%s\n\n'%diff.diff)
print 'Generated %s text patch'%name
else:
text_patch = None
if binaries:
binary_list = join(path(name), 'binary.changes')
binary_base = join(path(name), 'binaries')
os.mkdir(binary_base)
with open(binary_list, 'w') as pf:
for binary in binaries:
def mkdirs(path):
path = join(binary_base, path)
try:
os.makedirs(path)
except:
pass
return path
def extractfile(commit, path):
dirs, file = os.path.split(path)
dirs = mkdirs('%s/%s'%(commit, dirs))
with settings(show('stdout'), warn_only = True):
if commit == 'target':
commit_id = master.commit
else:
commit_id = selected_branch.commit
get_file(commit_id, path, join(binary_base, commit, path))
if binary.a_commit is None:
# new file is being created
extractfile('iteration', binary.b_path)
elif binary.b_commit is None:
# file is being removed
extractfile('target', binary.a_path)
else:
# file is being updated or renamed
extractfile('target', binary.a_path)
extractfile('iteration', binary.b_path)
if binary.new_file:
pf.write('new %s\n'%binary.b_path)
elif binary.deleted_file:
pf.write('rm %s\n'%binary.b_path)
elif binary.renamed:
pf.write('mv %s %s\n'%(binary.a_path, binary.b_path))
else:
pf.write('up %s\n'%binary.b_path)
print 'Generated %s'%binary_list
else:
binary_list = None
with open(join(path(name), 'patch.cfg'), 'wb') as configfile:
config.write(configfile)
os.mkdir(join(path(name), 'db'))
source = join(path(name), 'db', 'source.sql')
target = join(path(name), 'db', 'target.sql')
get_file(selected_branch.commit, join('db', 'last'), source)
get_file(master.commit, join('db', 'last'), target)
with open(join(path(name), 'db', 'source.sql'), 'r') as sfp:
with open(join(path(name), 'db', 'target.sql'), 'r') as tfp:
dbchanged = md5sum(sfp) != md5sum(tfp)
if dbchanged and confirm('Generate database patch?'):
dbpatch.generate(join(path(name), 'db'), source, target)
else:
shutil.rmtree(join(path(name), 'db'), ignore_errors=True)
config.set('patch', 'schema', 0)
config.set('patch', 'data', 0)
with open(join(path(name), 'patch.cfg'), 'wb') as configfile:
config.write(configfile)
return name, path(name)
