diff options
Diffstat (limited to 'Python/pythonrun.c')
| -rw-r--r-- | Python/pythonrun.c | 224 |
1 files changed, 132 insertions, 92 deletions
diff --git a/Python/pythonrun.c b/Python/pythonrun.c index 6181a38..330b822 100644 --- a/Python/pythonrun.c +++ b/Python/pythonrun.c @@ -59,9 +59,13 @@ extern "C" { static void flush_io(void); static PyObject *run_mod(mod_ty, PyObject *, PyObject *, PyObject *, PyCompilerFlags *, PyArena *); -static PyObject *run_pyc_file(FILE *, const char *, PyObject *, PyObject *, +static PyObject *run_pyc_file(FILE *, PyObject *, PyObject *, PyCompilerFlags *); static int PyRun_InteractiveOneObjectEx(FILE *, PyObject *, PyCompilerFlags *); +static PyObject* pyrun_file(FILE *fp, PyObject *filename, int start, + PyObject *globals, PyObject *locals, int closeit, + PyCompilerFlags *flags); + /* Parse input from a file and execute it */ int @@ -269,82 +273,89 @@ PyRun_InteractiveOneFlags(FILE *fp, const char *filename_str, PyCompilerFlags *f the file type, and, if we may close it, at the first few bytes. */ static int -maybe_pyc_file(FILE *fp, const char* filename, const char* ext, int closeit) +maybe_pyc_file(FILE *fp, PyObject *filename, int closeit) { - if (strcmp(ext, ".pyc") == 0) + PyObject *ext = PyUnicode_FromString(".pyc"); + if (ext == NULL) { + return -1; + } + Py_ssize_t endswith = PyUnicode_Tailmatch(filename, ext, 0, PY_SSIZE_T_MAX, +1); + Py_DECREF(ext); + if (endswith) { return 1; + } /* Only look into the file if we are allowed to close it, since it then should also be seekable. */ - if (closeit) { - /* Read only two bytes of the magic. If the file was opened in - text mode, the bytes 3 and 4 of the magic (\r\n) might not - be read as they are on disk. */ - unsigned int halfmagic = PyImport_GetMagicNumber() & 0xFFFF; - unsigned char buf[2]; - /* Mess: In case of -x, the stream is NOT at its start now, - and ungetc() was used to push back the first newline, - which makes the current stream position formally undefined, - and a x-platform nightmare. - Unfortunately, we have no direct way to know whether -x - was specified. So we use a terrible hack: if the current - stream position is not 0, we assume -x was specified, and - give up. Bug 132850 on SourceForge spells out the - hopelessness of trying anything else (fseek and ftell - don't work predictably x-platform for text-mode files). - */ - int ispyc = 0; - if (ftell(fp) == 0) { - if (fread(buf, 1, 2, fp) == 2 && - ((unsigned int)buf[1]<<8 | buf[0]) == halfmagic) - ispyc = 1; - rewind(fp); - } - return ispyc; + if (!closeit) { + return 0; } - return 0; + + /* Read only two bytes of the magic. If the file was opened in + text mode, the bytes 3 and 4 of the magic (\r\n) might not + be read as they are on disk. */ + unsigned int halfmagic = PyImport_GetMagicNumber() & 0xFFFF; + unsigned char buf[2]; + /* Mess: In case of -x, the stream is NOT at its start now, + and ungetc() was used to push back the first newline, + which makes the current stream position formally undefined, + and a x-platform nightmare. + Unfortunately, we have no direct way to know whether -x + was specified. So we use a terrible hack: if the current + stream position is not 0, we assume -x was specified, and + give up. Bug 132850 on SourceForge spells out the + hopelessness of trying anything else (fseek and ftell + don't work predictably x-platform for text-mode files). + */ + int ispyc = 0; + if (ftell(fp) == 0) { + if (fread(buf, 1, 2, fp) == 2 && + ((unsigned int)buf[1]<<8 | buf[0]) == halfmagic) + ispyc = 1; + rewind(fp); + } + return ispyc; } + static int -set_main_loader(PyObject *d, const char *filename, const char *loader_name) +set_main_loader(PyObject *d, PyObject *filename, const char *loader_name) { - PyObject *filename_obj, *bootstrap, *loader_type = NULL, *loader; - int result = 0; - - filename_obj = PyUnicode_DecodeFSDefault(filename); - if (filename_obj == NULL) - return -1; PyInterpreterState *interp = _PyInterpreterState_GET(); - bootstrap = PyObject_GetAttrString(interp->importlib, - "_bootstrap_external"); - if (bootstrap != NULL) { - loader_type = PyObject_GetAttrString(bootstrap, loader_name); - Py_DECREF(bootstrap); + PyObject *bootstrap = PyObject_GetAttrString(interp->importlib, + "_bootstrap_external"); + if (bootstrap == NULL) { + return -1; } + + PyObject *loader_type = PyObject_GetAttrString(bootstrap, loader_name); + Py_DECREF(bootstrap); if (loader_type == NULL) { - Py_DECREF(filename_obj); return -1; } - loader = PyObject_CallFunction(loader_type, "sN", "__main__", filename_obj); + + PyObject *loader = PyObject_CallFunction(loader_type, + "sO", "__main__", filename); Py_DECREF(loader_type); if (loader == NULL) { return -1; } + if (PyDict_SetItemString(d, "__loader__", loader) < 0) { - result = -1; + Py_DECREF(loader); + return -1; } Py_DECREF(loader); - return result; + return 0; } -int -PyRun_SimpleFileExFlags(FILE *fp, const char *filename, int closeit, - PyCompilerFlags *flags) + +static int +pyrun_simple_file(FILE *fp, PyObject *filename, int closeit, + PyCompilerFlags *flags) { PyObject *m, *d, *v; - const char *ext; int set_file_name = 0, ret = -1; - size_t len; m = PyImport_AddModule("__main__"); if (m == NULL) @@ -355,29 +366,29 @@ PyRun_SimpleFileExFlags(FILE *fp, const char *filename, int closeit, if (PyErr_Occurred()) { goto done; } - PyObject *f; - f = PyUnicode_DecodeFSDefault(filename); - if (f == NULL) - goto done; - if (PyDict_SetItemString(d, "__file__", f) < 0) { - Py_DECREF(f); + if (PyDict_SetItemString(d, "__file__", filename) < 0) { goto done; } if (PyDict_SetItemString(d, "__cached__", Py_None) < 0) { - Py_DECREF(f); goto done; } set_file_name = 1; - Py_DECREF(f); } - len = strlen(filename); - ext = filename + len - (len > 4 ? 4 : 0); - if (maybe_pyc_file(fp, filename, ext, closeit)) { + + int pyc = maybe_pyc_file(fp, filename, closeit); + if (pyc < 0) { + goto done; + } + + if (pyc) { FILE *pyc_fp; /* Try to run a pyc file. First, re-open in binary */ - if (closeit) + if (closeit) { fclose(fp); - if ((pyc_fp = _Py_fopen(filename, "rb")) == NULL) { + } + + pyc_fp = _Py_fopen_obj(filename, "rb"); + if (pyc_fp == NULL) { fprintf(stderr, "python: Can't reopen .pyc file\n"); goto done; } @@ -388,17 +399,17 @@ PyRun_SimpleFileExFlags(FILE *fp, const char *filename, int closeit, fclose(pyc_fp); goto done; } - v = run_pyc_file(pyc_fp, filename, d, d, flags); + v = run_pyc_file(pyc_fp, d, d, flags); } else { /* When running from stdin, leave __main__.__loader__ alone */ - if (strcmp(filename, "<stdin>") != 0 && + if (PyUnicode_CompareWithASCIIString(filename, "<stdin>") != 0 && set_main_loader(d, filename, "SourceFileLoader") < 0) { fprintf(stderr, "python: failed to set __main__.__loader__\n"); ret = -1; goto done; } - v = PyRun_FileExFlags(fp, filename, Py_file_input, d, d, - closeit, flags); + v = pyrun_file(fp, filename, Py_file_input, d, d, + closeit, flags); } flush_io(); if (v == NULL) { @@ -421,6 +432,21 @@ PyRun_SimpleFileExFlags(FILE *fp, const char *filename, int closeit, return ret; } + +int +PyRun_SimpleFileExFlags(FILE *fp, const char *filename, int closeit, + PyCompilerFlags *flags) +{ + PyObject *filename_obj = PyUnicode_DecodeFSDefault(filename); + if (filename_obj == NULL) { + return -1; + } + int res = pyrun_simple_file(fp, filename_obj, closeit, flags); + Py_DECREF(filename_obj); + return res; +} + + int PyRun_SimpleStringFlags(const char *command, PyCompilerFlags *flags) { @@ -1039,40 +1065,54 @@ PyRun_StringFlags(const char *str, int start, PyObject *globals, return ret; } -PyObject * -PyRun_FileExFlags(FILE *fp, const char *filename_str, int start, PyObject *globals, - PyObject *locals, int closeit, PyCompilerFlags *flags) -{ - PyObject *ret = NULL; - mod_ty mod; - PyArena *arena = NULL; - PyObject *filename; - - filename = PyUnicode_DecodeFSDefault(filename_str); - if (filename == NULL) - goto exit; - arena = PyArena_New(); - if (arena == NULL) - goto exit; +static PyObject * +pyrun_file(FILE *fp, PyObject *filename, int start, PyObject *globals, + PyObject *locals, int closeit, PyCompilerFlags *flags) +{ + PyArena *arena = PyArena_New(); + if (arena == NULL) { + return NULL; + } + mod_ty mod; mod = PyParser_ASTFromFileObject(fp, filename, NULL, start, NULL, NULL, flags, NULL, arena); - if (closeit) + if (closeit) { fclose(fp); - if (mod == NULL) { - goto exit; } - ret = run_mod(mod, filename, globals, locals, flags, arena); -exit: - Py_XDECREF(filename); - if (arena != NULL) - PyArena_Free(arena); + PyObject *ret; + if (mod != NULL) { + ret = run_mod(mod, filename, globals, locals, flags, arena); + } + else { + ret = NULL; + } + PyArena_Free(arena); + return ret; } + +PyObject * +PyRun_FileExFlags(FILE *fp, const char *filename, int start, PyObject *globals, + PyObject *locals, int closeit, PyCompilerFlags *flags) +{ + PyObject *filename_obj = PyUnicode_DecodeFSDefault(filename); + if (filename_obj == NULL) { + return NULL; + } + + PyObject *res = pyrun_file(fp, filename_obj, start, globals, + locals, closeit, flags); + Py_DECREF(filename_obj); + return res; + +} + + static void flush_io(void) { @@ -1155,8 +1195,8 @@ run_mod(mod_ty mod, PyObject *filename, PyObject *globals, PyObject *locals, } static PyObject * -run_pyc_file(FILE *fp, const char *filename, PyObject *globals, - PyObject *locals, PyCompilerFlags *flags) +run_pyc_file(FILE *fp, PyObject *globals, PyObject *locals, + PyCompilerFlags *flags) { PyThreadState *tstate = _PyThreadState_GET(); PyCodeObject *co; |