def launch_external_diff(file_a, file_b):
extdiff = options.get("diff", "extdiff")
if not extdiff:
return CmdResult.warning(_("No external diff viewer is defined.\n"))
try:
runext.run_cmd_in_bgnd([extdiff, file_a, file_b])
except OSError as edata:
return CmdResult.error(
stderr=_("Error launching external viewer \"{0}\": {1}\n").format(
extdiff, edata.strerror))
return CmdResult.ok()
def os_create_file(file_path):
"""Attempt to create a file with the given file_path and report the outcome as
a CmdResult tuple.
1. If console is not None print report of successful creation on it.
2. If a file with same file_path already exists fail and report a warning.
3. If file creation fails for other reasons report an error.
"""
_CONSOLE_LOG.start_cmd("create \"{0}\"".format(file_path))
if not os.path.exists(file_path):
try:
open(file_path, 'w').close()
enotify.notify_events(E_FILE_ADDED)
result = CmdResult.ok()
except (IOError, OSError) as msg:
result = CmdResult.error(stderr="\"{0}\": {1}".format(file_path, msg))
else:
result = CmdResult.warning(stderr=_("\"{0}\": file already exists").format(file_path))
_CONSOLE_LOG.end_cmd(result)
return result
