diff options
Diffstat (limited to 'morphlib/git.py')
-rw-r--r-- | morphlib/git.py | 38 |
1 files changed, 37 insertions, 1 deletions
diff --git a/morphlib/git.py b/morphlib/git.py index f3403e2b..69f8752e 100644 --- a/morphlib/git.py +++ b/morphlib/git.py @@ -21,6 +21,22 @@ import urlparse import morphlib +class NoMorphs(Exception): + + def __init__(self, repo, ref): + Exception.__init__(self, + 'Cannot find any morpologies at %s:%s' % + (repo, ref)) + + +class TooManyMorphs(Exception): + + def __init__(self, repo, ref, morphs): + Exception.__init__(self, + 'Too many morphologies at %s:%s: %s' % + (repo, ref, ', '.join(morphs))) + + def export_sources(repo, ref, tar_filename): '''Export the contents of a specific commit into a compressed tarball.''' ex = morphlib.execute.Execute('.', msg=logging.debug) @@ -32,7 +48,7 @@ def export_sources(repo, ref, tar_filename): def get_commit_id(repo, ref): '''Return the full SHA-1 commit id for a repo+ref.''' - # FIXME: This assume repo is a file:/// URL. + # FIXME: This assumes repo is a file:/// URL. scheme, netlock, path, params, query, frag = urlparse.urlparse(repo) assert scheme == 'file' @@ -40,3 +56,23 @@ def get_commit_id(repo, ref): out = ex.runv(['git', 'rev-list', '-n1', ref]) return out.strip() + +def get_morph_text(repo, ref): + '''Return a morphology from a git repository.''' + # FIXME: This implementation assumes a local repo. + + scheme, netlock, path, params, query, frag = urlparse.urlparse(repo) + assert scheme == 'file' + + ex = morphlib.execute.Execute(path, msg=logging.debug) + out = ex.runv(['git', 'ls-tree', '--name-only', '-z', ref]) + names = [x for x in out.split('\0') if x] + morphs = [x for x in names if x.endswith('.morph')] + if len(morphs) == 0: + raise NoMorphs(repo, ref) + if len(morphs) > 1: + raise TooManyMorphs(repo, ref, morphs) + out = ex.runv(['git', 'cat-file', 'blob', '%s:%s' % (ref, morphs[0])]) + + return morphs[0], out + |