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#!/usr/bin/env python
# Copyright 2016 The Fuchsia Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# A tool for autogenerating the mapping between Status and zx_status_t
# Usage: python gen_status.py zircon/system/public/zircon/errors.h {sys,enum,match}
import re
import sys
status_re = re.compile('#define\s+(ZX_\w+)\s+\((\-?\d+)\)$')
def parse(in_filename):
result = []
for line in file(in_filename):
m = status_re.match(line)
if m:
result.append((m.group(1), int(m.group(2))))
return result
def to_snake_case(name):
result = []
for element in name.split('_'):
result.append(element[0] + element[1:].lower())
return ''.join(result)
def out(style, l):
print('// Auto-generated using tools/gen_status.py')
longest = max(len(name) for (name, num) in l)
if style == 'sys':
for (name, num) in l:
print('pub const %s : zx_status_t = %d;' % (name.ljust(longest), num))
if style == 'enum':
print('pub enum Status {')
for (name, num) in l:
print(' %s = %d,' % (to_snake_case(name[3:]), num))
print('');
print(' /// Any zx_status_t not in the set above will map to the following:')
print(' UnknownOther = -32768,')
print('}')
if style == 'match':
for (name, num) in l:
print(' sys::%s => Status::%s,' % (name, to_snake_case(name[3:])))
print(' _ => Status::UnknownOther,')
l = parse(sys.argv[1])
out(sys.argv[2], l)
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