def which(self, command, path=None, exts=None):
for parent in (path or self._search_path):
c = mozpath.abspath(mozpath.join(parent, command))
for candidate in (c, ensure_exe_extension(c)):
if self.imported_os.path.exists(candidate):
return candidate
raise WhichError()
def which(self, command):
for parent in self._search_path:
path = mozpath.join(parent, command)
if self.OS.path.exists(path):
return path
raise WhichError()
def which(self, command, path=None):
for parent in (path or self._search_path):
candidate = mozpath.join(parent, command)
if self.OS.path.exists(candidate):
return candidate
raise WhichError()