#!/usr/bin/env python3

import subprocess, sys, shlex

cfile = sys.argv[1]

hfile = sys.argv[2]

lfile = sys.argv[3]

tabhfile = sys.argv[4]

args = ['--header-file=' + hfile, '-o', cfile, '-Ppriv_gst_parse_yy', lfile]

flex = [r'@FLEX@'] + shlex.split(r'@FLEX_ARGS@')

subprocess.check_call(flex + args)

prefix = '''#ifdef HAVE_CONFIG_H

#include<config.h>

#endif

'''

parse_snippet = '''void priv_gst_parse_yyset_column (int column_no , void * yyscanner);

void priv_gst_parse_yyset_column (int column_no , void * yyscanner)

'''

contents = open(cfile).read()

if not 'priv_gst_parse_yyget_column' in contents:

    contents = parse_snippet + contents

contents = prefix + contents

open(cfile, 'w').write(contents)