Mercurial > hgsubversion
view hgsubversion/compathacks.py @ 1506:332e803044e5
commands: fix registrar check
'util' in hgsubversion is a different type from hgutil, which is the one from
core hg. This was hidden by the fallback logic, but I'm not sure why it didn't
cause errors in the tests. Maybe I ran the original tests against an older hg.
This time I've ensured the tests pass against the latest version of hg.
author | Durham Goode <durham@fb.com> |
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date | Tue, 23 May 2017 11:08:42 -0700 |
parents | c5b7fb8911c0 |
children | 8410a978c650 |
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"""Functions to work around API changes.""" import errno import sys from mercurial import util def branchset(repo): """Return the set of branches present in a repo. Works around branchtags() vanishing between 2.8 and 2.9. """ try: return set(repo.branchmap()) except AttributeError: return set(repo.branchtags()) def pickle_load(f): import cPickle as pickle f.seek(0) return pickle.load(f) def makememfilectx(repo, path, data, islink, isexec, copied): """Return a memfilectx Works around memfilectx() adding a repo argument between 3.0 and 3.1. """ from mercurial import context try: return context.memfilectx(repo, path, data, islink, isexec, copied) except TypeError: return context.memfilectx(path, data, islink, isexec, copied) def filectxfn_deleted(memctx, path): """ Return None or raise an IOError as necessary if path is deleted. Call as: if path_missing: return compathacks.filectxfn_deleted(memctx, path) Works around filectxfn's contract changing between 3.1 and 3.2: 3.2 onwards, for deleted files, filectxfn should return None rather than returning IOError. """ if getattr(memctx, '_returnnoneformissingfiles', False): return None raise IOError(errno.ENOENT, '%s is deleted' % path) def filectxfn_deleted_reraise(memctx): """ Return None or reraise exc as necessary. Call as: try: # code that raises IOError if the path is missing except IOError: return compathacks.filectxfn_deleted_reraise(memctx) Works around filectxfn's contract changing between 3.1 and 3.2: 3.2 onwards, for deleted files, filectxfn should return None rather than returning IOError. """ exc_info = sys.exc_info() if (exc_info[1].errno == errno.ENOENT and getattr(memctx, '_returnnoneformissingfiles', False)): return None # preserve traceback info raise exc_info[0], exc_info[1], exc_info[2] # copied from hg 3.8 class _funcregistrarbase(object): """Base of decorator to register a fuction for specific purpose This decorator stores decorated functions into own dict 'table'. The least derived class can be defined by overriding 'formatdoc', for example:: class keyword(_funcregistrarbase): _docformat = ":%s: %s" This should be used as below: keyword = registrar.keyword() @keyword('bar') def barfunc(*args, **kwargs): '''Explanation of bar keyword .... ''' pass In this case: - 'barfunc' is stored as 'bar' in '_table' of an instance 'keyword' above - 'barfunc.__doc__' becomes ":bar: Explanation of bar keyword" """ def __init__(self, table=None): if table is None: self._table = {} else: self._table = table def __call__(self, decl, *args, **kwargs): return lambda func: self._doregister(func, decl, *args, **kwargs) def _doregister(self, func, decl, *args, **kwargs): name = self._getname(decl) if func.__doc__ and not util.safehasattr(func, '_origdoc'): doc = func.__doc__.strip() func._origdoc = doc func.__doc__ = self._formatdoc(decl, doc) self._table[name] = func self._extrasetup(name, func, *args, **kwargs) return func def _parsefuncdecl(self, decl): """Parse function declaration and return the name of function in it """ i = decl.find('(') if i >= 0: return decl[:i] else: return decl def _getname(self, decl): """Return the name of the registered function from decl Derived class should override this, if it allows more descriptive 'decl' string than just a name. """ return decl _docformat = None def _formatdoc(self, decl, doc): """Return formatted document of the registered function for help 'doc' is '__doc__.strip()' of the registered function. """ return self._docformat % (decl, doc) def _extrasetup(self, name, func): """Execute exra setup for registered function, if needed """ pass