def which(name, additional_dirs=None):
full_name = distutils.spawn.find_executable(name)
if full_name:
return full_name
for dir_name in additional_dirs or []:
full_name = joinpths(dirname(dirname(abspth(anvil.__file__))),
dir_name, name)
if isfile(full_name):
return full_name
raise excp.FileException("Cannot find %s" % name)
def which_first(bin_names, additional_dirs=None, ensure_executable=True):
assert bin_names, 'Binary names required'
for b in bin_names:
try:
return which(b,
additional_dirs=additional_dirs,
ensure_executable=ensure_executable)
except excp.FileException:
pass
bin_names = ", ".join(bin_names)
raise excp.FileException("Can't find any of %s" % bin_names)
def touch_file(fn, die_if_there=True, quiet=False, file_size=0, tracewriter=None):
if not isfile(fn):
if not quiet:
LOG.debug("Touching and truncating file %r (truncate size=%s)", fn, file_size)
if not is_dry_run():
mkdirslist(dirname(fn), tracewriter=tracewriter)
with open(fn, "w") as fh:
fh.truncate(file_size)
if tracewriter:
tracewriter.file_touched(fn)
else:
if die_if_there:
msg = "Can not touch & truncate file %r since it already exists" % (fn)
raise excp.FileException(msg)
def touch_file(fn, die_if_there=True, quiet=False, file_size=0):
if not isfile(fn):
if not quiet:
LOG.debug("Touching and truncating file %r (truncate size=%s)", fn,
file_size)
if not is_dry_run():
with open(fn, "w") as f:
f.truncate(file_size)
else:
if die_if_there:
msg = "Can not touch & truncate file %r since it already exists" % (
fn)
raise excp.FileException(msg)
return fn
def which(bin_name, additional_dirs=None, ensure_executable=True):
def check_it(path):
if not path:
return False
if not isfile(path):
return False
if ensure_executable and not os.access(path, os.X_OK):
return False
return True
full_name = distutils.spawn.find_executable(bin_name)
if check_it(full_name):
return full_name
if not additional_dirs:
additional_dirs = []
for dir_name in additional_dirs:
full_name = joinpths(dirname(dirname(abspth(anvil.__file__))),
dir_name, bin_name)
if check_it(full_name):
return full_name
raise excp.FileException("Can't find %s" % bin_name)
