File size: 2,183 Bytes
0f034b9 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 | #!/usr/bin/env python
# Copyright IBM Corporation 2021, 2022
# Written by Geert Janssen <geert@us.ibm.com>
# Simple ctypes-based Python wrapper of libtoken.so
# See ctypes documentation: https://docs.python.org/3/library/ctypes.html
# This Python script works with versions 2.6, 2.7, and 3.5
import sys
from ctypes import *
# Load the shared object (expects it in current directory):
libtoken = CDLL('./libtoken.so')
# Define the exported function signatures:
libtoken.C_tokenize.argtypes = (POINTER(c_char_p),
POINTER(c_char_p),
POINTER(c_uint),
POINTER(c_uint),
POINTER(c_uint))
libtoken.open_as_stdin.argtypes = (c_char_p,)
# 'Declare' the C function argument types:
_token = c_char_p()
_kind = c_char_p()
_linenr = c_uint()
_column = c_uint()
_pos = c_uint()
# Token generator:
def token():
global _token, _kind, _linenr, _column, _pos
# C_tokenize returns 0 upon end-of-file.
while int(libtoken.C_tokenize(byref(_token), byref(_kind), byref(_linenr),
byref(_column), byref(_pos))):
# Turn ctypes into real Python values:
lin = _linenr.value
col = _column.value
pos = _pos.value # not used for now
clas = _kind.value.decode()
text = _token.value.decode()
yield (lin,col,clas,text)
if len(sys.argv) == 1:
for tok in token():
print('[%u:%u] %s, %s' % tok)
else:
for file in sys.argv[1:]:
# Set C filename global and reopen as stdin:
b_str = file.encode('utf-8') # need handle b_str to retain as C pointer
libtoken.open_as_stdin(b_str)
# Access C globals:
filename = c_char_p.in_dll(libtoken, 'filename')
print('[0:0] filename, %s' % filename.value.decode())
for tok in token():
print('[%u:%u] %s, %s' % tok)
# Reset globals:
c_uint.in_dll(libtoken, 'linenr').value = 1
c_uint.in_dll(libtoken, 'column').value = 0
c_uint.in_dll(libtoken, 'char_count').value = 0
c_uint.in_dll(libtoken, 'utf8_count').value = 0
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