1import cffi
  2import os, os.path
  3import shlex
  4import subprocess
  5import sys
  6
  7ffi = cffi.FFI()
  8pydir = os.path.dirname(os.path.abspath(__file__))
  9srcdir = os.path.join(pydir, "..", "..")
 10incdir = os.path.join(pydir, "..", "..", "..", "include")
 11bindir = os.environ.get("BINDIR", os.path.join(os.getcwd(), ".."))
 12libdir = os.environ.get("LIBDIR")
 13
 14cpp = shlex.split(os.environ.get("CPP", "cc -E"))
 15cppflags = shlex.split(os.environ.get("CPPFLAGS", ""))
 16if __name__ == "__main__":
 17    cppflags.extend(sys.argv[1:])
 18cppflags.extend(["-I" + incdir, "-I" + srcdir, "-I" + bindir])
 19
 20ffi.set_source("mgba._pylib", """
 21#define static
 22#define inline
 23#include "flags.h"
 24#define OPAQUE_THREADING
 25#include <mgba/core/cache-set.h>
 26#include <mgba-util/common.h>
 27#include <mgba/core/core.h>
 28#include <mgba/core/map-cache.h>
 29#include <mgba/core/log.h>
 30#include <mgba/core/mem-search.h>
 31#include <mgba/core/thread.h>
 32#include <mgba/core/version.h>
 33#include <mgba/debugger/debugger.h>
 34#include <mgba/gba/interface.h>
 35#include <mgba/internal/arm/arm.h>
 36#include <mgba/internal/debugger/cli-debugger.h>
 37#include <mgba/internal/gba/gba.h>
 38#include <mgba/internal/gba/input.h>
 39#include <mgba/internal/gba/renderers/cache-set.h>
 40#include <mgba/internal/lr35902/lr35902.h>
 41#include <mgba/internal/gb/gb.h>
 42#include <mgba/internal/gb/renderers/cache-set.h>
 43#include <mgba-util/png-io.h>
 44#include <mgba-util/vfs.h>
 45
 46#define PYEXPORT
 47#include "platform/python/core.h"
 48#include "platform/python/log.h"
 49#include "platform/python/sio.h"
 50#include "platform/python/vfs-py.h"
 51#undef PYEXPORT
 52""", include_dirs=[incdir, srcdir],
 53     extra_compile_args=cppflags,
 54     libraries=["mgba"],
 55     library_dirs=[bindir],
 56     runtime_library_dirs=[libdir],
 57     sources=[os.path.join(pydir, path) for path in ["vfs-py.c", "core.c", "log.c", "sio.c"]])
 58
 59preprocessed = subprocess.check_output(cpp + ["-fno-inline", "-P"] + cppflags + [os.path.join(pydir, "_builder.h")], universal_newlines=True)
 60
 61lines = []
 62for line in preprocessed.splitlines():
 63    line = line.strip()
 64    if line.startswith('#'):
 65        continue
 66    lines.append(line)
 67ffi.cdef('\n'.join(lines))
 68
 69preprocessed = subprocess.check_output(cpp + ["-fno-inline", "-P"] + cppflags + [os.path.join(pydir, "lib.h")], universal_newlines=True)
 70
 71lines = []
 72for line in preprocessed.splitlines():
 73    line = line.strip()
 74    if line.startswith('#'):
 75        continue
 76    lines.append(line)
 77ffi.embedding_api('\n'.join(lines))
 78
 79ffi.embedding_init_code("""
 80    import os, os.path
 81    venv = os.getenv('VIRTUAL_ENV')
 82    if venv:
 83        activate = os.path.join(venv, 'bin', 'activate_this.py')
 84        exec(compile(open(activate, "rb").read(), activate, 'exec'), dict(__file__=activate))
 85    from mgba._pylib import ffi, lib
 86    symbols = {}
 87    globalSyms = {
 88        'symbols': symbols
 89    }
 90    pendingCode = []
 91
 92    @ffi.def_extern()
 93    def mPythonSetDebugger(debugger):
 94        from mgba.debugger import NativeDebugger, CLIDebugger
 95        oldDebugger = globalSyms.get('debugger')
 96        if oldDebugger and oldDebugger._native == debugger:
 97            return
 98        if oldDebugger and not debugger:
 99            del globalSyms['debugger']
100            return
101        if debugger.type == lib.DEBUGGER_CLI:
102            debugger = CLIDebugger(debugger)
103        else:
104            debugger = NativeDebugger(debugger)
105        globalSyms['debugger'] = debugger
106
107    @ffi.def_extern()
108    def mPythonLoadScript(name, vf):
109        from mgba.vfs import VFile
110        vf = VFile(vf)
111        name = ffi.string(name)
112        source = vf.readAll().decode('utf-8')
113        try:
114            code = compile(source, name, 'exec')
115            pendingCode.append(code)
116        except:
117            return False
118        return True
119
120    @ffi.def_extern()
121    def mPythonRunPending():
122        global pendingCode
123        for code in pendingCode:
124            exec(code, globalSyms, {})
125        pendingCode = []
126
127    @ffi.def_extern()
128    def mPythonDebuggerEntered(reason, info):
129        debugger = globalSyms['debugger']
130        if not debugger:
131            return
132        if info == ffi.NULL:
133            info = None
134        for cb in debugger._cbs:
135            cb(reason, info)
136
137    @ffi.def_extern()
138    def mPythonLookupSymbol(name, outptr):
139        name = ffi.string(name).decode('utf-8')
140        if name not in symbols:
141            return False
142        sym = symbols[name]
143        val = None
144        try:
145            val = int(sym)
146        except:
147            try:
148                val = sym()
149            except:
150                pass
151        if val is None:
152            return False
153        try:
154            outptr[0] = ffi.cast('int32_t', val)
155            return True
156        except:
157            return False
158""")
159
160if __name__ == "__main__":
161    ffi.emit_c_code("lib.c")