1 import distutils.ccompiler
2 import sys, os, subprocess, glob
4 header = os.path.join('src', 'aubio.h')
5 output_path = os.path.join('python', 'gen')
7 source_header = """// this file is generated! do not modify
8 #include "aubio-types.h"
45 def get_preprocessor():
46 # findout which compiler to use
47 from distutils.sysconfig import customize_compiler
48 compiler_name = distutils.ccompiler.get_default_compiler()
49 compiler = distutils.ccompiler.new_compiler(compiler=compiler_name)
51 customize_compiler(compiler)
52 except AttributeError as e:
53 print("Warning: failed customizing compiler ({:s})".format(repr(e)))
55 if hasattr(compiler, 'initialize'):
58 except ValueError as e:
59 print("Warning: failed initializing compiler ({:s})".format(repr(e)))
62 if hasattr(compiler, 'preprocessor'): # for unixccompiler
63 cpp_cmd = compiler.preprocessor
64 elif hasattr(compiler, 'compiler'): # for ccompiler
65 cpp_cmd = compiler.compiler.split()
67 elif hasattr(compiler, 'cc'): # for msvccompiler
68 cpp_cmd = compiler.cc.split()
72 print("Warning: could not guess preprocessor, using env's CC")
73 cpp_cmd = os.environ.get('CC', 'cc').split()
78 def get_cpp_objects(header=header):
79 cpp_cmd = get_preprocessor()
81 macros = [('AUBIO_UNSTABLE', 1)]
83 if not os.path.isfile(header):
84 raise Exception("could not find include file " + header)
86 includes = [os.path.dirname(header)]
87 cpp_cmd += distutils.ccompiler.gen_preprocess_options(macros, includes)
90 print("Running command: {:s}".format(" ".join(cpp_cmd)))
91 proc = subprocess.Popen(cpp_cmd,
92 stderr=subprocess.PIPE,
93 stdout=subprocess.PIPE)
94 assert proc, 'Proc was none'
95 cpp_output = proc.stdout.read()
96 err_output = proc.stderr.read()
98 raise Exception("preprocessor output is empty:\n%s" % err_output)
100 print ("Warning: preprocessor produced warnings:\n%s" % err_output)
101 if not isinstance(cpp_output, list):
102 cpp_output = [l.strip() for l in cpp_output.decode('utf8').split('\n')]
104 cpp_output = filter(lambda y: len(y) > 1, cpp_output)
105 cpp_output = list(filter(lambda y: not y.startswith('#'), cpp_output))
109 if i >= len(cpp_output): break
110 if cpp_output[i-1].endswith(',') or cpp_output[i-1].endswith('{') or cpp_output[i].startswith('}'):
111 cpp_output[i] = cpp_output[i-1] + ' ' + cpp_output[i]
116 typedefs = filter(lambda y: y.startswith ('typedef struct _aubio'), cpp_output)
118 cpp_objects = [a.split()[3][:-1] for a in typedefs]
120 return cpp_output, cpp_objects
123 def analyze_cpp_output(cpp_objects, cpp_output):
126 for o in cpp_objects:
127 if o[:6] != 'aubio_':
130 if shortname in skip_objects:
132 lib[shortname] = {'struct': [], 'new': [], 'del': [], 'do': [], 'get': [], 'set': [], 'other': []}
133 lib[shortname]['longname'] = o
134 lib[shortname]['shortname'] = shortname
135 for fn in cpp_output:
137 #print "found", o[:-1], "in", fn
138 if 'typedef struct ' in fn:
139 lib[shortname]['struct'].append(fn)
141 lib[shortname]['do'].append(fn)
143 lib[shortname]['new'].append(fn)
145 lib[shortname]['del'].append(fn)
147 lib[shortname]['get'].append(fn)
149 lib[shortname]['set'].append(fn)
151 #print "no idea what to do about", fn
152 lib[shortname]['other'].append(fn)
155 def print_cpp_output_results(lib, cpp_output):
156 for fn in cpp_output:
159 for family in lib[o]:
160 if fn in lib[o][family]:
163 print ("missing", fn)
166 for family in lib[o]:
167 if type(lib[o][family]) == str:
168 print ( "{:15s} {:10s} {:s}".format(o, family, lib[o][family] ) )
169 elif len(lib[o][family]) == 1:
170 print ( "{:15s} {:10s} {:s}".format(o, family, lib[o][family][0] ) )
172 print ( "{:15s} {:10s} {:s}".format(o, family, lib[o][family] ) )
175 def generate_external(header=header, output_path=output_path, usedouble=False, overwrite=True):
176 if not os.path.isdir(output_path): os.mkdir(output_path)
177 elif not overwrite: return sorted(glob.glob(os.path.join(output_path, '*.c')))
179 cpp_output, cpp_objects = get_cpp_objects(header)
181 lib = analyze_cpp_output(cpp_objects, cpp_output)
182 # print_cpp_output_results(lib, cpp_output)
186 from .gen_code import MappedObject
187 except (SystemError, ValueError):
188 from gen_code import MappedObject
191 mapped = MappedObject(lib[o], usedouble = usedouble)
192 out += mapped.gen_code()
193 output_file = os.path.join(output_path, 'gen-%s.c' % o)
194 with open(output_file, 'w') as f:
196 print ("wrote %s" % output_file )
197 sources_list.append(output_file)
200 out += "#include \"aubio-generated.h\""
201 check_types = "\n || ".join(["PyType_Ready(&Py_%sType) < 0" % o for o in lib])
204 int generated_types_ready (void)
206 return ({pycheck_types});
208 """.format(pycheck_types = check_types)
210 add_types = "".join(["""
211 Py_INCREF (&Py_{name}Type);
212 PyModule_AddObject(m, "{name}", (PyObject *) & Py_{name}Type);""".format(name = o) for o in lib])
215 void add_generated_objects ( PyObject *m )
219 """.format(add_types = add_types)
221 output_file = os.path.join(output_path, 'aubio-generated.c')
222 with open(output_file, 'w') as f:
224 print ("wrote %s" % output_file )
225 sources_list.append(output_file)
227 objlist = "".join(["extern PyTypeObject Py_%sType;\n" % p for p in lib])
228 out = """// generated list of objects created with gen_external.py
234 #ifndef HAVE_AUBIO_DOUBLE
235 #define HAVE_AUBIO_DOUBLE 1
240 int generated_objects ( void );
241 void add_generated_objects( PyObject *m );
242 """.format(objlist = objlist)
244 output_file = os.path.join(output_path, 'aubio-generated.h')
245 with open(output_file, 'w') as f:
247 print ("wrote %s" % output_file )
248 # no need to add header to list of sources
252 if __name__ == '__main__':
253 if len(sys.argv) > 1: header = sys.argv[1]
254 if len(sys.argv) > 2: output_path = sys.argv[2]
255 generate_external(header, output_path)