142 lines
3.9 KiB
Python
Executable File
142 lines
3.9 KiB
Python
Executable File
#! /usr/local/bin/python
|
|
|
|
# Read #define's and translate to Python code.
|
|
# Handle #include statements.
|
|
# Handle #define macros with one argument.
|
|
# Anything that isn't recognized or doesn't translate into valid
|
|
# Python is ignored.
|
|
|
|
# Without filename arguments, acts as a filter.
|
|
# If one or more filenames are given, output is written to corresponding
|
|
# filenames in the local directory, translated to all uppercase, with
|
|
# the extension replaced by ".py".
|
|
|
|
# By passing one or more options of the form "-i regular_expression"
|
|
# you can specify additional strings to be ignored. This is useful
|
|
# e.g. to ignore casts to u_long: simply specify "-i '(u_long)'".
|
|
|
|
# XXX To do:
|
|
# - turn trailing C comments into Python comments
|
|
# - turn C Boolean operators "&& || !" into Python "and or not"
|
|
# - what to do about #if(def)?
|
|
# - what to do about macros with multiple parameters?
|
|
|
|
import sys, regex, regsub, string, getopt, os
|
|
|
|
p_define = regex.compile('^#[\t ]*define[\t ]+\([a-zA-Z0-9_]+\)[\t ]+')
|
|
|
|
p_macro = regex.compile(
|
|
'^#[\t ]*define[\t ]+\([a-zA-Z0-9_]+\)(\([_a-zA-Z][_a-zA-Z0-9]*\))[\t ]+')
|
|
|
|
p_include = regex.compile('^#[\t ]*include[\t ]+<\([a-zA-Z0-9_/\.]+\)')
|
|
|
|
p_comment = regex.compile('/\*\([^*]+\|\*+[^/]\)*\(\*+/\)?')
|
|
|
|
ignores = [p_comment]
|
|
|
|
p_char = regex.compile("'\(\\\\.[^\\\\]*\|[^\\\\]\)'")
|
|
|
|
filedict = {}
|
|
|
|
try:
|
|
searchdirs=string.splitfields(os.environ['include'],';')
|
|
except KeyError:
|
|
try:
|
|
searchdirs=string.splitfields(os.environ['INCLUDE'],';')
|
|
except KeyError:
|
|
searchdirs=['/usr/include']
|
|
|
|
def main():
|
|
opts, args = getopt.getopt(sys.argv[1:], 'i:')
|
|
for o, a in opts:
|
|
if o == '-i':
|
|
ignores.append(regex.compile(a))
|
|
if not args:
|
|
args = ['-']
|
|
for filename in args:
|
|
if filename == '-':
|
|
sys.stdout.write('# Generated by h2py from stdin\n')
|
|
process(sys.stdin, sys.stdout)
|
|
else:
|
|
fp = open(filename, 'r')
|
|
outfile = os.path.basename(filename)
|
|
i = string.rfind(outfile, '.')
|
|
if i > 0: outfile = outfile[:i]
|
|
outfile = string.upper(outfile)
|
|
outfile = outfile + '.py'
|
|
outfp = open(outfile, 'w')
|
|
outfp.write('# Generated by h2py from %s\n' % filename)
|
|
filedict = {}
|
|
for dir in searchdirs:
|
|
if filename[:len(dir)] == dir:
|
|
filedict[filename[len(dir)+1:]] = None # no '/' trailing
|
|
break
|
|
process(fp, outfp)
|
|
outfp.close()
|
|
fp.close()
|
|
|
|
def process(fp, outfp, env = {}):
|
|
lineno = 0
|
|
while 1:
|
|
line = fp.readline()
|
|
if not line: break
|
|
lineno = lineno + 1
|
|
n = p_define.match(line)
|
|
if n >= 0:
|
|
# gobble up continuation lines
|
|
while line[-2:] == '\\\n':
|
|
nextline = fp.readline()
|
|
if not nextline: break
|
|
lineno = lineno + 1
|
|
line = line + nextline
|
|
name = p_define.group(1)
|
|
body = line[n:]
|
|
# replace ignored patterns by spaces
|
|
for p in ignores:
|
|
body = regsub.gsub(p, ' ', body)
|
|
# replace char literals by ord(...)
|
|
body = regsub.gsub(p_char, 'ord(\\0)', body)
|
|
stmt = '%s = %s\n' % (name, string.strip(body))
|
|
ok = 0
|
|
try:
|
|
exec stmt in env
|
|
except:
|
|
sys.stderr.write('Skipping: %s' % stmt)
|
|
else:
|
|
outfp.write(stmt)
|
|
n =p_macro.match(line)
|
|
if n >= 0:
|
|
macro, arg = p_macro.group(1, 2)
|
|
body = line[n:]
|
|
for p in ignores:
|
|
body = regsub.gsub(p, ' ', body)
|
|
body = regsub.gsub(p_char, 'ord(\\0)', body)
|
|
stmt = 'def %s(%s): return %s\n' % (macro, arg, body)
|
|
try:
|
|
exec stmt in env
|
|
except:
|
|
sys.stderr.write('Skipping: %s' % stmt)
|
|
else:
|
|
outfp.write(stmt)
|
|
if p_include.match(line) >= 0:
|
|
regs = p_include.regs
|
|
a, b = regs[1]
|
|
filename = line[a:b]
|
|
if not filedict.has_key(filename):
|
|
filedict[filename] = None
|
|
inclfp = None
|
|
for dir in searchdirs:
|
|
try:
|
|
inclfp = open(dir + '/' + filename, 'r')
|
|
break
|
|
except IOError:
|
|
pass
|
|
if inclfp:
|
|
outfp.write(
|
|
'\n# Included from %s\n' % filename)
|
|
process(inclfp, outfp, env)
|
|
else:
|
|
sys.stderr.write('Warning - could not find file %s' % filename)
|
|
|
|
main()
|