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Issue #3080: Import builtins using Unicode strings

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- is_builtin(), init_builtin(), load_builtin() and other builtin related
   functions use Unicode strings, instead of byte strings
 - Rename _PyImport_FixupExtensionUnicode() to _PyImport_FixupExtensionObject()
 - Rename _PyImport_FindExtensionUnicode() to _PyImport_FindExtensionObject()
This commit is contained in:
Victor Stinner 2011-03-07 18:20:56 +01:00
parent 53dc735168
commit 9587286f98
3 changed files with 80 additions and 60 deletions
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4
Include/import.h
View file

@ -79,12 +79,12 @@ PyAPI_FUNC(void) _PyImport_ReInitLock(void);
PyAPI_FUNC(PyObject *)_PyImport_FindBuiltin( PyAPI_FUNC(PyObject *)_PyImport_FindBuiltin(
const char *name /* UTF-8 encoded string */ const char *name /* UTF-8 encoded string */
); );
PyAPI_FUNC(PyObject *)_PyImport_FindExtensionUnicode(const char *, PyObject *); PyAPI_FUNC(PyObject *)_PyImport_FindExtensionObject(PyObject *, PyObject *);
PyAPI_FUNC(int)_PyImport_FixupBuiltin( PyAPI_FUNC(int)_PyImport_FixupBuiltin(
PyObject *mod, PyObject *mod,
char *name /* UTF-8 encoded string */ char *name /* UTF-8 encoded string */
); );
PyAPI_FUNC(int)_PyImport_FixupExtensionUnicode(PyObject*, char *, PyObject *); PyAPI_FUNC(int)_PyImport_FixupExtensionObject(PyObject*, PyObject *, PyObject *);
struct _inittab { struct _inittab {
char *name; char *name;

112
Python/import.c
View file

@ -117,7 +117,7 @@ typedef unsigned short mode_t;
static long pyc_magic = MAGIC; static long pyc_magic = MAGIC;
static const char *pyc_tag = TAG; static const char *pyc_tag = TAG;
/* See _PyImport_FixupExtensionUnicode() below */ /* See _PyImport_FixupExtensionObject() below */
static PyObject *extensions = NULL; static PyObject *extensions = NULL;
/* This table is defined in config.c: */ /* This table is defined in config.c: */
@ -563,10 +563,10 @@ PyImport_GetMagicTag(void)
once, we keep a static dictionary 'extensions' keyed by module name once, we keep a static dictionary 'extensions' keyed by module name
(for built-in modules) or by filename (for dynamically loaded (for built-in modules) or by filename (for dynamically loaded
modules), containing these modules. A copy of the module's modules), containing these modules. A copy of the module's
dictionary is stored by calling _PyImport_FixupExtensionUnicode() dictionary is stored by calling _PyImport_FixupExtensionObject()
immediately after the module initialization function succeeds. A immediately after the module initialization function succeeds. A
copy can be retrieved from there by calling copy can be retrieved from there by calling
_PyImport_FindExtensionUnicode(). _PyImport_FindExtensionObject().
Modules which do support multiple initialization set their m_size Modules which do support multiple initialization set their m_size
field to a non-negative number (indicating the size of the field to a non-negative number (indicating the size of the
@ -575,7 +575,8 @@ PyImport_GetMagicTag(void)
*/ */
int int
_PyImport_FixupExtensionUnicode(PyObject *mod, char *name, PyObject *filename) _PyImport_FixupExtensionObject(PyObject *mod, PyObject *name,
PyObject *filename)
{ {
PyObject *modules, *dict; PyObject *modules, *dict;
struct PyModuleDef *def; struct PyModuleDef *def;
@ -594,10 +595,10 @@ _PyImport_FixupExtensionUnicode(PyObject *mod, char *name, PyObject *filename)
return -1; return -1;
} }
modules = PyImport_GetModuleDict(); modules = PyImport_GetModuleDict();
if (PyDict_SetItemString(modules, name, mod) < 0) if (PyDict_SetItem(modules, name, mod) < 0)
return -1; return -1;
if (_PyState_AddModule(mod, def) < 0) { if (_PyState_AddModule(mod, def) < 0) {
PyDict_DelItemString(modules, name); PyDict_DelItem(modules, name);
return -1; return -1;
} }
if (def->m_size == -1) { if (def->m_size == -1) {
@ -623,17 +624,17 @@ int
_PyImport_FixupBuiltin(PyObject *mod, char *name) _PyImport_FixupBuiltin(PyObject *mod, char *name)
{ {
int res; int res;
PyObject *filename; PyObject *nameobj;
filename = PyUnicode_FromString(name); nameobj = PyUnicode_FromString(name);
if (filename == NULL) if (nameobj == NULL)
return -1; return -1;
res = _PyImport_FixupExtensionUnicode(mod, name, filename); res = _PyImport_FixupExtensionObject(mod, nameobj, nameobj);
Py_DECREF(filename); Py_DECREF(nameobj);
return res; return res;
} }
PyObject * PyObject *
_PyImport_FindExtensionUnicode(const char *name, PyObject *filename) _PyImport_FindExtensionObject(PyObject *name, PyObject *filename)
{ {
PyObject *mod, *mdict; PyObject *mod, *mdict;
PyModuleDef* def; PyModuleDef* def;
@ -646,7 +647,7 @@ _PyImport_FindExtensionUnicode(const char *name, PyObject *filename)
/* Module does not support repeated initialization */ /* Module does not support repeated initialization */
if (def->m_base.m_copy == NULL) if (def->m_base.m_copy == NULL)
return NULL; return NULL;
mod = PyImport_AddModule(name); mod = PyImport_AddModuleObject(name);
if (mod == NULL) if (mod == NULL)
return NULL; return NULL;
mdict = PyModule_GetDict(mod); mdict = PyModule_GetDict(mod);
@ -661,16 +662,16 @@ _PyImport_FindExtensionUnicode(const char *name, PyObject *filename)
mod = def->m_base.m_init(); mod = def->m_base.m_init();
if (mod == NULL) if (mod == NULL)
return NULL; return NULL;
PyDict_SetItemString(PyImport_GetModuleDict(), name, mod); PyDict_SetItem(PyImport_GetModuleDict(), name, mod);
Py_DECREF(mod); Py_DECREF(mod);
} }
if (_PyState_AddModule(mod, def) < 0) { if (_PyState_AddModule(mod, def) < 0) {
PyDict_DelItemString(PyImport_GetModuleDict(), name); PyDict_DelItem(PyImport_GetModuleDict(), name);
Py_DECREF(mod); Py_DECREF(mod);
return NULL; return NULL;
} }
if (Py_VerboseFlag) if (Py_VerboseFlag)
PySys_FormatStderr("import %s # previously loaded (%U)\n", PySys_FormatStderr("import %U # previously loaded (%R)\n",
name, filename); name, filename);
return mod; return mod;
@ -679,12 +680,12 @@ _PyImport_FindExtensionUnicode(const char *name, PyObject *filename)
PyObject * PyObject *
_PyImport_FindBuiltin(const char *name) _PyImport_FindBuiltin(const char *name)
{ {
PyObject *res, *filename; PyObject *res, *nameobj;
filename = PyUnicode_FromString(name); nameobj = PyUnicode_FromString(name);
if (filename == NULL) if (nameobj == NULL)
return NULL; return NULL;
res = _PyImport_FindExtensionUnicode(name, filename); res = _PyImport_FindExtensionObject(nameobj, nameobj);
Py_DECREF(filename); Py_DECREF(nameobj);
return res; return res;
} }
@ -1491,11 +1492,12 @@ load_package(char *name, char *pathname)
/* Helper to test for built-in module */ /* Helper to test for built-in module */
static int static int
is_builtin(char *name) is_builtin(PyObject *name)
{ {
int i; int i, cmp;
for (i = 0; PyImport_Inittab[i].name != NULL; i++) { for (i = 0; PyImport_Inittab[i].name != NULL; i++) {
if (strcmp(name, PyImport_Inittab[i].name) == 0) { cmp = PyUnicode_CompareWithASCIIString(name, PyImport_Inittab[i].name);
if (cmp == 0) {
if (PyImport_Inittab[i].initfunc == NULL) if (PyImport_Inittab[i].initfunc == NULL)
return -1; return -1;
else else
@ -1617,7 +1619,7 @@ find_module(char *fullname, char *subname, PyObject *path, char *buf,
size_t saved_namelen; size_t saved_namelen;
char *saved_buf = NULL; char *saved_buf = NULL;
#endif #endif
PyObject *fullname_obj; PyObject *fullname_obj, *nameobj;
if (p_loader != NULL) if (p_loader != NULL)
*p_loader = NULL; *p_loader = NULL;
@ -1677,10 +1679,15 @@ find_module(char *fullname, char *subname, PyObject *path, char *buf,
} }
if (path == NULL) { if (path == NULL) {
if (is_builtin(name)) { nameobj = PyUnicode_FromString(name);
if (nameobj == NULL)
return NULL;
if (is_builtin(nameobj)) {
Py_DECREF(nameobj);
strcpy(buf, name); strcpy(buf, name);
return &fd_builtin; return &fd_builtin;
} }
Py_DECREF(nameobj);
#ifdef MS_COREDLL #ifdef MS_COREDLL
fp = _PyWin_FindRegisteredModule(name, &fdp, buf, buflen); fp = _PyWin_FindRegisteredModule(name, &fdp, buf, buflen);
if (fp != NULL) { if (fp != NULL) {
@ -2086,40 +2093,35 @@ find_init_module(char *buf)
#endif /* HAVE_STAT */ #endif /* HAVE_STAT */
static int init_builtin(char *); /* Forward */ static int init_builtin(PyObject *); /* Forward */
static PyObject* static PyObject*
load_builtin(char *name, char *pathname, int type) load_builtin(PyObject *name, int type)
{ {
PyObject *m, *modules; PyObject *m, *modules;
int err; int err;
if (pathname != NULL && pathname[0] != '\0')
name = pathname;
if (type == C_BUILTIN) if (type == C_BUILTIN)
err = init_builtin(name); err = init_builtin(name);
else else
err = PyImport_ImportFrozenModule(name); err = PyImport_ImportFrozenModuleObject(name);
if (err < 0) if (err < 0)
return NULL; return NULL;
if (err == 0) { if (err == 0) {
PyErr_Format(PyExc_ImportError, PyErr_Format(PyExc_ImportError,
"Purported %s module %.200s not found", "Purported %s module %R not found",
type == C_BUILTIN ? type == C_BUILTIN ? "builtin" : "frozen",
"builtin" : "frozen",
name); name);
return NULL; return NULL;
} }
modules = PyImport_GetModuleDict(); modules = PyImport_GetModuleDict();
m = PyDict_GetItemString(modules, name); m = PyDict_GetItem(modules, name);
if (m == NULL) { if (m == NULL) {
PyErr_Format( PyErr_Format(
PyExc_ImportError, PyExc_ImportError,
"%s module %.200s not properly initialized", "%s module %R not properly initialized",
type == C_BUILTIN ? type == C_BUILTIN ? "builtin" : "frozen",
"builtin" : "frozen",
name); name);
return NULL; return NULL;
} }
@ -2168,9 +2170,15 @@ load_module(char *name, FILE *fp, char *pathname, int type, PyObject *loader)
break; break;
case C_BUILTIN: case C_BUILTIN:
case PY_FROZEN: case PY_FROZEN: {
m = load_builtin(name, pathname, type); PyObject *nameobj = PyUnicode_FromString(name);
if (nameobj != NULL) {
m = load_builtin(nameobj, type);
Py_DECREF(nameobj);
} else
m = NULL;
break; break;
}
case IMP_HOOK: { case IMP_HOOK: {
if (loader == NULL) { if (loader == NULL) {
@ -2199,28 +2207,28 @@ load_module(char *name, FILE *fp, char *pathname, int type, PyObject *loader)
an exception set if the initialization failed. */ an exception set if the initialization failed. */
static int static int
init_builtin(char *name) init_builtin(PyObject *name)
{ {
struct _inittab *p; struct _inittab *p;
if (_PyImport_FindBuiltin(name) != NULL) if (_PyImport_FindExtensionObject(name, name) != NULL)
return 1; return 1;
for (p = PyImport_Inittab; p->name != NULL; p++) { for (p = PyImport_Inittab; p->name != NULL; p++) {
PyObject *mod; PyObject *mod;
if (strcmp(name, p->name) == 0) { if (PyUnicode_CompareWithASCIIString(name, p->name) == 0) {
if (p->initfunc == NULL) { if (p->initfunc == NULL) {
PyErr_Format(PyExc_ImportError, PyErr_Format(PyExc_ImportError,
"Cannot re-init internal module %.200s", "Cannot re-init internal module %R",
name); name);
return -1; return -1;
} }
if (Py_VerboseFlag) if (Py_VerboseFlag)
PySys_WriteStderr("import %s # builtin\n", name); PySys_FormatStderr("import %U # builtin\n", name);
mod = (*p->initfunc)(); mod = (*p->initfunc)();
if (mod == 0) if (mod == 0)
return -1; return -1;
if (_PyImport_FixupBuiltin(mod, name) < 0) if (_PyImport_FixupExtensionObject(mod, name, name) < 0)
return -1; return -1;
/* FixupExtension has put the module into sys.modules, /* FixupExtension has put the module into sys.modules,
so we can release our own reference. */ so we can release our own reference. */
@ -3286,10 +3294,10 @@ imp_find_module(PyObject *self, PyObject *args)
static PyObject * static PyObject *
imp_init_builtin(PyObject *self, PyObject *args) imp_init_builtin(PyObject *self, PyObject *args)
{ {
char *name; PyObject *name;
int ret; int ret;
PyObject *m; PyObject *m;
if (!PyArg_ParseTuple(args, "s:init_builtin", &name)) if (!PyArg_ParseTuple(args, "U:init_builtin", &name))
return NULL; return NULL;
ret = init_builtin(name); ret = init_builtin(name);
if (ret < 0) if (ret < 0)
@ -3298,7 +3306,7 @@ imp_init_builtin(PyObject *self, PyObject *args)
Py_INCREF(Py_None); Py_INCREF(Py_None);
return Py_None; return Py_None;
} }
m = PyImport_AddModule(name); m = PyImport_AddModuleObject(name);
Py_XINCREF(m); Py_XINCREF(m);
return m; return m;
} }
@ -3346,8 +3354,8 @@ imp_is_frozen_package(PyObject *self, PyObject *args)
static PyObject * static PyObject *
imp_is_builtin(PyObject *self, PyObject *args) imp_is_builtin(PyObject *self, PyObject *args)
{ {
char *name; PyObject *name;
if (!PyArg_ParseTuple(args, "s:is_builtin", &name)) if (!PyArg_ParseTuple(args, "U:is_builtin", &name))
return NULL; return NULL;
return PyLong_FromLong(is_builtin(name)); return PyLong_FromLong(is_builtin(name));
} }

24
Python/importdl.c
View file

@ -26,17 +26,23 @@ _PyImport_LoadDynamicModule(char *name, char *pathname, FILE *fp)
dl_funcptr p0; dl_funcptr p0;
PyObject* (*p)(void); PyObject* (*p)(void);
struct PyModuleDef *def; struct PyModuleDef *def;
PyObject *result; PyObject *nameobj, *result;
path = PyUnicode_DecodeFSDefault(pathname); path = PyUnicode_DecodeFSDefault(pathname);
if (path == NULL) if (path == NULL)
return NULL; return NULL;
if ((m = _PyImport_FindExtensionUnicode(name, path)) != NULL) { nameobj = PyUnicode_FromString(name);
if (nameobj == NULL)
return NULL;
m = _PyImport_FindExtensionObject(nameobj, path);
if (m != NULL) {
Py_DECREF(nameobj);
Py_INCREF(m); Py_INCREF(m);
result = m; result = m;
goto finally; goto finally;
} }
Py_DECREF(nameobj);
lastdot = strrchr(name, '.'); lastdot = strrchr(name, '.');
if (lastdot == NULL) { if (lastdot == NULL) {
packagecontext = NULL; packagecontext = NULL;
@ -82,12 +88,18 @@ _PyImport_LoadDynamicModule(char *name, char *pathname, FILE *fp)
else else
Py_INCREF(path); Py_INCREF(path);
if (_PyImport_FixupExtensionUnicode(m, name, path) < 0) nameobj = PyUnicode_FromString(name);
if (nameobj == NULL)
return NULL;
if (_PyImport_FixupExtensionObject(m, nameobj, path) < 0) {
Py_DECREF(nameobj);
goto error; goto error;
}
if (Py_VerboseFlag) if (Py_VerboseFlag)
PySys_WriteStderr( PySys_FormatStderr(
"import %s # dynamically loaded from %s\n", "import %U # dynamically loaded from %s\n",
name, pathname); nameobj, pathname);
Py_DECREF(nameobj);
result = m; result = m;
goto finally; goto finally;