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- /***********************************************************
- Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
- The Netherlands.
-
- All Rights Reserved
-
- Permission to use, copy, modify, and distribute this software and its
- documentation for any purpose and without fee is hereby granted,
- provided that the above copyright notice appear in all copies and that
- both that copyright notice and this permission notice appear in
- supporting documentation, and that the names of Stichting Mathematisch
- Centrum or CWI or Corporation for National Research Initiatives or
- CNRI not be used in advertising or publicity pertaining to
- distribution of the software without specific, written prior
- permission.
-
- While CWI is the initial source for this software, a modified version
- is made available by the Corporation for National Research Initiatives
- (CNRI) at the Internet address ftp://ftp.python.org.
-
- STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
- REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
- MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
- CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
- DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
- PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
- TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
- PERFORMANCE OF THIS SOFTWARE.
-
- ******************************************************************/
-
- /* Module definition and import implementation */
-
- #include "Python.h"
-
- #include "node.h"
- #include "token.h"
- #include "errcode.h"
- #include "marshal.h"
- #include "compile.h"
- #include "eval.h"
- #include "osdefs.h"
- #include "importdl.h"
- #ifdef macintosh
- #include "macglue.h"
- #endif
-
- #ifdef HAVE_UNISTD_H
- #include <unistd.h>
- #endif
-
- /* We expect that stat exists on most systems.
- It's confirmed on Unix, Mac and Windows.
- If you don't have it, add #define DONT_HAVE_STAT to your config.h. */
- #ifndef DONT_HAVE_STAT
- #define HAVE_STAT
-
- #ifndef DONT_HAVE_SYS_TYPES_H
- #include <sys/types.h>
- #endif
- #ifndef DONT_HAVE_SYS_STAT_H
- #include <sys/stat.h>
- #endif
-
- #if defined(PYCC_VACPP)
- /* VisualAge C/C++ Failed to Define MountType Field in sys/stat.h */
- #define S_IFMT (S_IFDIR|S_IFCHR|S_IFREG)
- #endif
-
- #ifndef S_ISDIR
- #define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
- #endif
-
- #endif
-
-
- extern long PyOS_GetLastModificationTime(); /* In getmtime.c */
-
- /* Magic word to reject .pyc files generated by other Python versions */
- /* Change for each incompatible change */
- /* The value of CR and LF is incorporated so if you ever read or write
- a .pyc file in text mode the magic number will be wrong; also, the
- Apple MPW compiler swaps their values, botching string constants */
- /* XXX Perhaps the magic number should be frozen and a version field
- added to the .pyc file header? */
- /* New way to come up with the magic number: (YEAR-1995), MONTH, DAY */
- #define MAGIC (20121 | ((long)'\r'<<16) | ((long)'\n'<<24))
-
- /* See _PyImport_FixupExtension() below */
- static PyObject *extensions = NULL;
-
- /* This table is defined in config.c: */
- extern struct _inittab _PyImport_Inittab[];
-
- struct _inittab *PyImport_Inittab = _PyImport_Inittab;
-
- /* these tables define the module suffixes that Python recognizes */
- struct filedescr * _PyImport_Filetab = NULL;
- static const struct filedescr _PyImport_StandardFiletab[] = {
- {".py", "r", PY_SOURCE},
- {".pyc", "rb", PY_COMPILED},
- {0, 0}
- };
-
- /* Initialize things */
-
- void
- _PyImport_Init()
- {
- const struct filedescr *scan;
- struct filedescr *filetab;
- int countD = 0;
- int countS = 0;
-
- /* prepare _PyImport_Filetab: copy entries from
- _PyImport_DynLoadFiletab and _PyImport_StandardFiletab.
- */
- #ifndef NO_DYNAMIC_LINK
- for (scan = _PyImport_DynLoadFiletab; scan->suffix != NULL; ++scan)
- ++countD;
- #endif /* NO_DYNAMIC_LINK */
- for (scan = _PyImport_StandardFiletab; scan->suffix != NULL; ++scan)
- ++countS;
- filetab = malloc((countD + countS + 1) * sizeof(struct filedescr));
- #ifndef NO_DYNAMIC_LINK
- memcpy(filetab, _PyImport_DynLoadFiletab,
- countD * sizeof(struct filedescr));
- #endif /* NO_DYNAMIC_LINK */
- memcpy(filetab + countD, _PyImport_StandardFiletab,
- countS * sizeof(struct filedescr));
- filetab[countD + countS].suffix = NULL;
-
- _PyImport_Filetab = filetab;
-
- if (Py_OptimizeFlag) {
- /* Replace ".pyc" with ".pyo" in _PyImport_Filetab */
- for (; filetab->suffix != NULL; filetab++) {
- if (strcmp(filetab->suffix, ".pyc") == 0)
- filetab->suffix = ".pyo";
- }
- }
- }
-
- void
- _PyImport_Fini()
- {
- Py_XDECREF(extensions);
- extensions = NULL;
- }
-
-
- /* Locking primitives to prevent parallel imports of the same module
- in different threads to return with a partially loaded module.
- These calls are serialized by the global interpreter lock. */
-
- #ifdef WITH_THREAD
-
- #include "pythread.h"
-
- static PyThread_type_lock import_lock = 0;
- static long import_lock_thread = -1;
- static int import_lock_level = 0;
-
- static void
- lock_import()
- {
- long me = PyThread_get_thread_ident();
- if (me == -1)
- return; /* Too bad */
- if (import_lock == NULL)
- import_lock = PyThread_allocate_lock();
- if (import_lock_thread == me) {
- import_lock_level++;
- return;
- }
- if (import_lock_thread != -1 || !PyThread_acquire_lock(import_lock, 0)) {
- PyThreadState *tstate = PyEval_SaveThread();
- PyThread_acquire_lock(import_lock, 1);
- PyEval_RestoreThread(tstate);
- }
- import_lock_thread = me;
- import_lock_level = 1;
- }
-
- static void
- unlock_import()
- {
- long me = PyThread_get_thread_ident();
- if (me == -1)
- return; /* Too bad */
- if (import_lock_thread != me)
- Py_FatalError("unlock_import: not holding the import lock");
- import_lock_level--;
- if (import_lock_level == 0) {
- import_lock_thread = -1;
- PyThread_release_lock(import_lock);
- }
- }
-
- #else
-
- #define lock_import()
- #define unlock_import()
-
- #endif
-
- /* Helper for sys */
-
- PyObject *
- PyImport_GetModuleDict()
- {
- PyInterpreterState *interp = PyThreadState_Get()->interp;
- if (interp->modules == NULL)
- Py_FatalError("PyImport_GetModuleDict: no module dictionary!");
- return interp->modules;
- }
-
-
- /* List of names to clear in sys */
- const static char* sys_deletes[] = {
- "path", "argv", "ps1", "ps2", "exitfunc",
- "exc_type", "exc_value", "exc_traceback",
- "last_type", "last_value", "last_traceback",
- NULL
- };
-
- const static char* sys_files[] = {
- "stdin", "__stdin__",
- "stdout", "__stdout__",
- "stderr", "__stderr__",
- NULL
- };
-
-
- /* Un-initialize things, as good as we can */
-
- void
- PyImport_Cleanup()
- {
- int pos, ndone;
- char *name;
- PyObject *key, *value, *dict;
- PyInterpreterState *interp = PyThreadState_Get()->interp;
- PyObject *modules = interp->modules;
-
- if (modules == NULL)
- return; /* Already done */
-
- /* Delete some special variables first. These are common
- places where user values hide and people complain when their
- destructors fail. Since the modules containing them are
- deleted *last* of all, they would come too late in the normal
- destruction order. Sigh. */
-
- value = PyDict_GetItemString(modules, "__builtin__");
- if (value != NULL && PyModule_Check(value)) {
- dict = PyModule_GetDict(value);
- if (Py_VerboseFlag)
- PySys_WriteStderr("# clear __builtin__._\n");
- PyDict_SetItemString(dict, "_", Py_None);
- }
- value = PyDict_GetItemString(modules, "sys");
- if (value != NULL && PyModule_Check(value)) {
- char **p;
- PyObject *v;
- dict = PyModule_GetDict(value);
- for (p = sys_deletes; *p != NULL; p++) {
- if (Py_VerboseFlag)
- PySys_WriteStderr("# clear sys.%s\n", *p);
- PyDict_SetItemString(dict, *p, Py_None);
- }
- for (p = sys_files; *p != NULL; p+=2) {
- if (Py_VerboseFlag)
- PySys_WriteStderr("# restore sys.%s\n", *p);
- v = PyDict_GetItemString(dict, *(p+1));
- if (v == NULL)
- v = Py_None;
- PyDict_SetItemString(dict, *p, v);
- }
- }
-
- /* First, delete __main__ */
- value = PyDict_GetItemString(modules, "__main__");
- if (value != NULL && PyModule_Check(value)) {
- if (Py_VerboseFlag)
- PySys_WriteStderr("# cleanup __main__\n");
- _PyModule_Clear(value);
- PyDict_SetItemString(modules, "__main__", Py_None);
- }
-
- /* The special treatment of __builtin__ here is because even
- when it's not referenced as a module, its dictionary is
- referenced by almost every module's __builtins__. Since
- deleting a module clears its dictionary (even if there are
- references left to it), we need to delete the __builtin__
- module last. Likewise, we don't delete sys until the very
- end because it is implicitly referenced (e.g. by print).
-
- Also note that we 'delete' modules by replacing their entry
- in the modules dict with None, rather than really deleting
- them; this avoids a rehash of the modules dictionary and
- also marks them as "non existent" so they won't be
- re-imported. */
-
- /* Next, repeatedly delete modules with a reference count of
- one (skipping __builtin__ and sys) and delete them */
- do {
- ndone = 0;
- pos = 0;
- while (PyDict_Next(modules, &pos, &key, &value)) {
- if (value->ob_refcnt != 1)
- continue;
- if (PyString_Check(key) && PyModule_Check(value)) {
- name = PyString_AS_STRING(key);
- if (strcmp(name, "__builtin__") == 0)
- continue;
- if (strcmp(name, "sys") == 0)
- continue;
- if (Py_VerboseFlag)
- PySys_WriteStderr(
- "# cleanup[1] %s\n", name);
- _PyModule_Clear(value);
- PyDict_SetItem(modules, key, Py_None);
- ndone++;
- }
- }
- } while (ndone > 0);
-
- /* Next, delete all modules (still skipping __builtin__ and sys) */
- pos = 0;
- while (PyDict_Next(modules, &pos, &key, &value)) {
- if (PyString_Check(key) && PyModule_Check(value)) {
- name = PyString_AS_STRING(key);
- if (strcmp(name, "__builtin__") == 0)
- continue;
- if (strcmp(name, "sys") == 0)
- continue;
- if (Py_VerboseFlag)
- PySys_WriteStderr("# cleanup[2] %s\n", name);
- _PyModule_Clear(value);
- PyDict_SetItem(modules, key, Py_None);
- }
- }
-
- /* Next, delete sys and __builtin__ (in that order) */
- value = PyDict_GetItemString(modules, "sys");
- if (value != NULL && PyModule_Check(value)) {
- if (Py_VerboseFlag)
- PySys_WriteStderr("# cleanup sys\n");
- _PyModule_Clear(value);
- PyDict_SetItemString(modules, "sys", Py_None);
- }
- value = PyDict_GetItemString(modules, "__builtin__");
- if (value != NULL && PyModule_Check(value)) {
- if (Py_VerboseFlag)
- PySys_WriteStderr("# cleanup __builtin__\n");
- _PyModule_Clear(value);
- PyDict_SetItemString(modules, "__builtin__", Py_None);
- }
-
- /* Finally, clear and delete the modules directory */
- PyDict_Clear(modules);
- interp->modules = NULL;
- Py_DECREF(modules);
- }
-
-
- /* Helper for pythonrun.c -- return magic number */
-
- long
- PyImport_GetMagicNumber()
- {
- return MAGIC;
- }
-
-
- /* Magic for extension modules (built-in as well as dynamically
- loaded). To prevent initializing an extension module more than
- once, we keep a static dictionary 'extensions' keyed by module name
- (for built-in modules) or by filename (for dynamically loaded
- modules), containing these modules. A copy od the module's
- dictionary is stored by calling _PyImport_FixupExtension()
- immediately after the module initialization function succeeds. A
- copy can be retrieved from there by calling
- _PyImport_FindExtension(). */
-
- PyObject *
- _PyImport_FixupExtension(name, filename)
- char *name;
- char *filename;
- {
- PyObject *modules, *mod, *dict, *copy;
- if (extensions == NULL) {
- extensions = PyDict_New();
- if (extensions == NULL)
- return NULL;
- }
- modules = PyImport_GetModuleDict();
- mod = PyDict_GetItemString(modules, name);
- if (mod == NULL || !PyModule_Check(mod)) {
- PyErr_Format(PyExc_SystemError,
- "_PyImport_FixupExtension: module %.200s not loaded", name);
- return NULL;
- }
- dict = PyModule_GetDict(mod);
- if (dict == NULL)
- return NULL;
- copy = PyObject_CallMethod(dict, "copy", "");
- if (copy == NULL)
- return NULL;
- PyDict_SetItemString(extensions, filename, copy);
- Py_DECREF(copy);
- return copy;
- }
-
- PyObject *
- _PyImport_FindExtension(name, filename)
- char *name;
- char *filename;
- {
- PyObject *dict, *mod, *mdict, *result;
- if (extensions == NULL)
- return NULL;
- dict = PyDict_GetItemString(extensions, filename);
- if (dict == NULL)
- return NULL;
- mod = PyImport_AddModule(name);
- if (mod == NULL)
- return NULL;
- mdict = PyModule_GetDict(mod);
- if (mdict == NULL)
- return NULL;
- result = PyObject_CallMethod(mdict, "update", "O", dict);
- if (result == NULL)
- return NULL;
- Py_DECREF(result);
- if (Py_VerboseFlag)
- PySys_WriteStderr("import %s # previously loaded (%s)\n",
- name, filename);
- return mod;
- }
-
-
- /* Get the module object corresponding to a module name.
- First check the modules dictionary if there's one there,
- if not, create a new one and insert in in the modules dictionary.
- Because the former action is most common, THIS DOES NOT RETURN A
- 'NEW' REFERENCE! */
-
- PyObject *
- PyImport_AddModule(name)
- char *name;
- {
- PyObject *modules = PyImport_GetModuleDict();
- PyObject *m;
-
- if ((m = PyDict_GetItemString(modules, name)) != NULL &&
- PyModule_Check(m))
- return m;
- m = PyModule_New(name);
- if (m == NULL)
- return NULL;
- if (PyDict_SetItemString(modules, name, m) != 0) {
- Py_DECREF(m);
- return NULL;
- }
- Py_DECREF(m); /* Yes, it still exists, in modules! */
-
- return m;
- }
-
-
- /* Execute a code object in a module and return the module object
- WITH INCREMENTED REFERENCE COUNT */
-
- PyObject *
- PyImport_ExecCodeModule(name, co)
- char *name;
- PyObject *co;
- {
- return PyImport_ExecCodeModuleEx(name, co, (char *)NULL);
- }
-
- PyObject *
- PyImport_ExecCodeModuleEx(name, co, pathname)
- char *name;
- PyObject *co;
- char *pathname;
- {
- PyObject *modules = PyImport_GetModuleDict();
- PyObject *m, *d, *v;
-
- m = PyImport_AddModule(name);
- if (m == NULL)
- return NULL;
- d = PyModule_GetDict(m);
- if (PyDict_GetItemString(d, "__builtins__") == NULL) {
- if (PyDict_SetItemString(d, "__builtins__",
- PyEval_GetBuiltins()) != 0)
- return NULL;
- }
- /* Remember the filename as the __file__ attribute */
- v = NULL;
- if (pathname != NULL) {
- v = PyString_FromString(pathname);
- if (v == NULL)
- PyErr_Clear();
- }
- if (v == NULL) {
- v = ((PyCodeObject *)co)->co_filename;
- Py_INCREF(v);
- }
- if (PyDict_SetItemString(d, "__file__", v) != 0)
- PyErr_Clear(); /* Not important enough to report */
- Py_DECREF(v);
-
- v = PyEval_EvalCode((PyCodeObject *)co, d, d);
- if (v == NULL)
- return NULL;
- Py_DECREF(v);
- if ((m = PyDict_GetItemString(modules, name)) == NULL) {
- PyErr_Format(PyExc_ImportError,
- "Loaded module %.200s not found in sys.modules",
- name);
- return NULL;
- }
-
- Py_INCREF(m);
-
- return m;
- }
-
-
- /* Given a pathname for a Python source file, fill a buffer with the
- pathname for the corresponding compiled file. Return the pathname
- for the compiled file, or NULL if there's no space in the buffer.
- Doesn't set an exception. */
-
- static char *
- make_compiled_pathname(pathname, buf, buflen)
- char *pathname;
- char *buf;
- int buflen;
- {
- int len;
-
- len = strlen(pathname);
- if (len+2 > buflen)
- return NULL;
- strcpy(buf, pathname);
- strcpy(buf+len, Py_OptimizeFlag ? "o" : "c");
-
- return buf;
- }
-
-
- /* Given a pathname for a Python source file, its time of last
- modification, and a pathname for a compiled file, check whether the
- compiled file represents the same version of the source. If so,
- return a FILE pointer for the compiled file, positioned just after
- the header; if not, return NULL.
- Doesn't set an exception. */
-
- static FILE *
- check_compiled_module(pathname, mtime, cpathname)
- char *pathname;
- long mtime;
- char *cpathname;
- {
- FILE *fp;
- long magic;
- long pyc_mtime;
-
- fp = fopen(cpathname, "rb");
- if (fp == NULL)
- return NULL;
- magic = PyMarshal_ReadLongFromFile(fp);
- if (magic != MAGIC) {
- if (Py_VerboseFlag)
- PySys_WriteStderr("# %s has bad magic\n", cpathname);
- fclose(fp);
- return NULL;
- }
- pyc_mtime = PyMarshal_ReadLongFromFile(fp);
- if (pyc_mtime != mtime) {
- if (Py_VerboseFlag)
- PySys_WriteStderr("# %s has bad mtime\n", cpathname);
- fclose(fp);
- return NULL;
- }
- if (Py_VerboseFlag)
- PySys_WriteStderr("# %s matches %s\n", cpathname, pathname);
- return fp;
- }
-
-
- /* Read a code object from a file and check it for validity */
-
- static PyCodeObject *
- read_compiled_module(cpathname, fp)
- char *cpathname;
- FILE *fp;
- {
- PyObject *co;
-
- co = PyMarshal_ReadObjectFromFile(fp);
- /* Ugly: rd_object() may return NULL with or without error */
- if (co == NULL || !PyCode_Check(co)) {
- if (!PyErr_Occurred())
- PyErr_Format(PyExc_ImportError,
- "Non-code object in %.200s", cpathname);
- Py_XDECREF(co);
- return NULL;
- }
- return (PyCodeObject *)co;
- }
-
-
- /* Load a module from a compiled file, execute it, and return its
- module object WITH INCREMENTED REFERENCE COUNT */
-
- static PyObject *
- load_compiled_module(name, cpathname, fp)
- char *name;
- char *cpathname;
- FILE *fp;
- {
- long magic;
- PyCodeObject *co;
- PyObject *m;
-
- magic = PyMarshal_ReadLongFromFile(fp);
- if (magic != MAGIC) {
- PyErr_Format(PyExc_ImportError,
- "Bad magic number in %.200s", cpathname);
- return NULL;
- }
- (void) PyMarshal_ReadLongFromFile(fp);
- co = read_compiled_module(cpathname, fp);
- if (co == NULL)
- return NULL;
- if (Py_VerboseFlag)
- PySys_WriteStderr("import %s # precompiled from %s\n",
- name, cpathname);
- m = PyImport_ExecCodeModuleEx(name, (PyObject *)co, cpathname);
- Py_DECREF(co);
-
- return m;
- }
-
- /* Parse a source file and return the corresponding code object */
- #ifndef WITHOUT_COMPILER
- static PyCodeObject *
- parse_source_module(pathname, fp)
- char *pathname;
- FILE *fp;
- {
- PyCodeObject *co;
- node *n;
-
- n = PyParser_SimpleParseFile(fp, pathname, Py_file_input);
- if (n == NULL)
- return NULL;
- co = PyNode_Compile(n, pathname);
- PyNode_Free(n);
-
- return co;
- }
- #endif /* WITHOUT_COMPILER */
-
- /* Write a compiled module to a file, placing the time of last
- modification of its source into the header.
- Errors are ignored, if a write error occurs an attempt is made to
- remove the file. */
-
- #ifndef WITHOUT_COMPILER
-
- static void
- write_compiled_module(co, cpathname, mtime)
- PyCodeObject *co;
- char *cpathname;
- long mtime;
- {
- FILE *fp;
-
- fp = fopen(cpathname, "wb");
- if (fp == NULL) {
- if (Py_VerboseFlag)
- PySys_WriteStderr(
- "# can't create %s\n", cpathname);
- return;
- }
- PyMarshal_WriteLongToFile(MAGIC, fp);
- /* First write a 0 for mtime */
- PyMarshal_WriteLongToFile(0L, fp);
- PyMarshal_WriteObjectToFile((PyObject *)co, fp);
- if (ferror(fp)) {
- if (Py_VerboseFlag)
- PySys_WriteStderr("# can't write %s\n", cpathname);
- /* Don't keep partial file */
- fclose(fp);
- (void) unlink(cpathname);
- return;
- }
- /* Now write the true mtime */
- fseek(fp, 4L, 0);
- PyMarshal_WriteLongToFile(mtime, fp);
- fflush(fp);
- fclose(fp);
- if (Py_VerboseFlag)
- PySys_WriteStderr("# wrote %s\n", cpathname);
- #ifdef macintosh
- setfiletype(cpathname, 'Pyth', 'PYC ');
- #endif
- }
-
-
- /* Load a source module from a given file and return its module
- object WITH INCREMENTED REFERENCE COUNT. If there's a matching
- byte-compiled file, use that instead. */
-
- static PyObject *
- load_source_module(name, pathname, fp)
- char *name;
- char *pathname;
- FILE *fp;
- {
- long mtime;
- FILE *fpc;
- char buf[MAXPATHLEN+1];
- char *cpathname;
- PyCodeObject *co;
- PyObject *m;
-
- mtime = PyOS_GetLastModificationTime(pathname, fp);
- cpathname = make_compiled_pathname(pathname, buf, MAXPATHLEN+1);
- if (cpathname != NULL &&
- (fpc = check_compiled_module(pathname, mtime, cpathname))) {
- co = read_compiled_module(cpathname, fpc);
- fclose(fpc);
- if (co == NULL)
- return NULL;
- if (Py_VerboseFlag)
- PySys_WriteStderr("import %s # precompiled from %s\n",
- name, cpathname);
- pathname = cpathname;
- }
- else {
- co = parse_source_module(pathname, fp);
- if (co == NULL)
- return NULL;
- if (Py_VerboseFlag)
- PySys_WriteStderr("import %s # from %s\n",
- name, pathname);
- write_compiled_module(co, cpathname, mtime);
- }
- m = PyImport_ExecCodeModuleEx(name, (PyObject *)co, pathname);
- Py_DECREF(co);
-
- return m;
- }
- #endif /* WITHOUT_COMPILER */
-
- /* Forward */
- static PyObject *load_module Py_PROTO((char *, FILE *, char *, int)) SEG_IMPORT_C;
- static struct filedescr *find_module Py_PROTO((char *, PyObject *,
- char *, int, FILE **)) SEG_IMPORT_C;
- static struct _frozen *find_frozen Py_PROTO((char *name)) SEG_IMPORT_C;
-
- /* Load a package and return its module object WITH INCREMENTED
- REFERENCE COUNT */
-
- static PyObject *
- load_package(name, pathname)
- char *name;
- char *pathname;
- {
- PyObject *m, *d, *file, *path;
- int err;
- char buf[MAXPATHLEN+1];
- FILE *fp = NULL;
- struct filedescr *fdp;
-
- m = PyImport_AddModule(name);
- if (m == NULL)
- return NULL;
- if (Py_VerboseFlag)
- PySys_WriteStderr("import %s # directory %s\n",
- name, pathname);
- d = PyModule_GetDict(m);
- file = PyString_FromString(pathname);
- if (file == NULL)
- return NULL;
- path = Py_BuildValue("[O]", file);
- if (path == NULL) {
- Py_DECREF(file);
- return NULL;
- }
- err = PyDict_SetItemString(d, "__file__", file);
- if (err == 0)
- err = PyDict_SetItemString(d, "__path__", path);
- if (err != 0) {
- m = NULL;
- goto cleanup;
- }
- buf[0] = '\0';
- fdp = find_module("__init__", path, buf, sizeof(buf), &fp);
- if (fdp == NULL) {
- if (PyErr_ExceptionMatches(PyExc_ImportError)) {
- PyErr_Clear();
- }
- else
- m = NULL;
- goto cleanup;
- }
- m = load_module(name, fp, buf, fdp->type);
- if (fp != NULL)
- fclose(fp);
- cleanup:
- Py_XDECREF(path);
- Py_XDECREF(file);
- return m;
- }
-
-
- /* Helper to test for built-in module */
-
- static int
- is_builtin(name)
- char *name;
- {
- int i;
- for (i = 0; PyImport_Inittab[i].name != NULL; i++) {
- if (strcmp(name, PyImport_Inittab[i].name) == 0) {
- if (PyImport_Inittab[i].initfunc == NULL)
- return -1;
- else
- return 1;
- }
- }
- return 0;
- }
-
-
- /* Search the path (default sys.path) for a module. Return the
- corresponding filedescr struct, and (via return arguments) the
- pathname and an open file. Return NULL if the module is not found. */
-
- #ifdef MS_COREDLL
- extern FILE *PyWin_FindRegisteredModule();
- #endif
-
- #ifdef CHECK_IMPORT_CASE
- static int check_case(char *, int, int, char *);
- #endif
-
- #ifdef HAVE_STAT
- static int find_init_module Py_PROTO((char *)) SEG_IMPORT_C; /* Forward */
- #endif /* HAVE_STAT */
-
- static struct filedescr *
- find_module(realname, path, buf, buflen, p_fp)
- char *realname;
- PyObject *path;
- /* Output parameters: */
- char *buf;
- int buflen;
- FILE **p_fp;
- {
- int i, npath, len, namelen;
- struct _frozen *f;
- struct filedescr *fdp = NULL;
- FILE *fp = NULL;
- #ifdef HAVE_STAT
- struct stat statbuf;
- #endif /* HAVE_STAT */
- static struct filedescr fd_frozen = {"", "", PY_FROZEN};
- static struct filedescr fd_builtin = {"", "", C_BUILTIN};
- static struct filedescr fd_package = {"", "", PKG_DIRECTORY};
- char name[MAXPATHLEN+1];
-
- strcpy(name, realname);
-
- if (path != NULL && PyString_Check(path)) {
- /* Submodule of "frozen" package:
- Set name to the fullname, path to NULL
- and continue as "usual" */
- if (PyString_Size(path) + 1 + strlen(name) >= (size_t)buflen) {
- PyErr_SetString(PyExc_ImportError,
- "full frozen module name too long");
- return NULL;
- }
- strcpy(buf, PyString_AsString(path));
- strcat(buf, ".");
- strcat(buf, name);
- strcpy(name, buf);
- path = NULL;
- }
- if (path == NULL) {
- if (is_builtin(name)) {
- strcpy(buf, name);
- return &fd_builtin;
- }
- if ((f = find_frozen(name)) != NULL) {
- strcpy(buf, name);
- return &fd_frozen;
- }
-
- #ifdef MS_COREDLL
- fp = PyWin_FindRegisteredModule(name, &fdp, buf, buflen);
- if (fp != NULL) {
- *p_fp = fp;
- return fdp;
- }
- #endif
- path = PySys_GetObject("path");
- }
- if (path == NULL || !PyList_Check(path)) {
- PyErr_SetString(PyExc_ImportError,
- "sys.path must be a list of directory names");
- return NULL;
- }
- npath = PyList_Size(path);
- namelen = strlen(name);
- for (i = 0; i < npath; i++) {
- PyObject *v = PyList_GetItem(path, i);
- if (!PyString_Check(v))
- continue;
- len = PyString_Size(v);
- if (len + 2 + namelen + MAXSUFFIXSIZE >= buflen)
- continue; /* Too long */
- strcpy(buf, PyString_AsString(v));
- if ((int)strlen(buf) != len)
- continue; /* v contains '\0' */
- #ifdef macintosh
- #ifdef INTERN_STRINGS
- /*
- ** Speedup: each sys.path item is interned, and
- ** FindResourceModule remembers which items refer to
- ** folders (so we don't have to bother trying to look
- ** into them for resources).
- */
- PyString_InternInPlace(&PyList_GET_ITEM(path, i));
- v = PyList_GET_ITEM(path, i);
- #endif
- if (PyMac_FindResourceModule((PyStringObject *)v, name, buf)) {
- static struct filedescr resfiledescr =
- {"", "", PY_RESOURCE};
-
- return &resfiledescr;
- }
- if (PyMac_FindCodeResourceModule((PyStringObject *)v, name, buf)) {
- static struct filedescr resfiledescr =
- {"", "", PY_CODERESOURCE};
-
- return &resfiledescr;
- }
- #endif
- if (len > 0 && buf[len-1] != SEP
- #ifdef ALTSEP
- && buf[len-1] != ALTSEP
- #endif
- )
- buf[len++] = SEP;
- #ifdef IMPORT_8x3_NAMES
- /* see if we are searching in directory dos-8x3 */
- if (len > 7 && !strncmp(buf + len - 8, "dos-8x3", 7)){
- int j;
- char ch; /* limit name to 8 lower-case characters */
- for (j = 0; (ch = name[j]) && j < 8; j++)
- if (isupper(ch))
- buf[len++] = tolower(ch);
- else
- buf[len++] = ch;
- }
- else /* Not in dos-8x3, use the full name */
- #endif
- {
- strcpy(buf+len, name);
- len += namelen;
- }
- #ifdef HAVE_STAT
- if (stat(buf, &statbuf) == 0) {
- if (S_ISDIR(statbuf.st_mode)) {
- if (find_init_module(buf)) {
- #ifdef CHECK_IMPORT_CASE
- if (!check_case(buf, len, namelen,
- name))
- return NULL;
- #endif
- return &fd_package;
- }
- }
- }
- #else
- /* XXX How are you going to test for directories? */
- #endif
- #ifdef macintosh
- fdp = PyMac_FindModuleExtension(buf, &len, name);
- if (fdp)
- fp = fopen(buf, fdp->mode);
- #else
- for (fdp = _PyImport_Filetab; fdp->suffix != NULL; fdp++) {
- strcpy(buf+len, fdp->suffix);
- if (Py_VerboseFlag > 1)
- PySys_WriteStderr("# trying %s\n", buf);
- fp = fopen(buf, fdp->mode);
- if (fp != NULL)
- break;
- }
- #endif /* !macintosh */
- if (fp != NULL)
- break;
- }
- if (fp == NULL) {
- PyErr_Format(PyExc_ImportError,
- "No module named %.200s", name);
- return NULL;
- }
- #ifdef CHECK_IMPORT_CASE
- if (!check_case(buf, len, namelen, name)) {
- fclose(fp);
- return NULL;
- }
- #endif
-
- *p_fp = fp;
- return fdp;
- }
-
- #ifdef CHECK_IMPORT_CASE
-
- #ifdef MS_WIN32
- #include <windows.h>
- #include <ctype.h>
-
- static int
- allcaps8x3(s)
- char *s;
- {
- /* Return 1 if s is an 8.3 filename in ALLCAPS */
- char c;
- char *dot = strchr(s, '.');
- char *end = strchr(s, '\0');
- if (dot != NULL) {
- if (dot-s > 8)
- return 1; /* More than 8 before '.' */
- if (end-dot > 4)
- return 1; /* More than 3 after '.' */
- end = strchr(dot+1, '.');
- if (end != NULL)
- return 1; /* More than one dot */
- }
- else if (end-s > 8)
- return 1; /* More than 8 and no dot */
- while ((c = *s++)) {
- if (islower(c))
- return 0;
- }
- return 1;
- }
-
- static int
- check_case(char *buf, int len, int namelen, char *name)
- {
- WIN32_FIND_DATA data;
- HANDLE h;
- if (getenv("PYTHONCASEOK") != NULL)
- return 1;
- h = FindFirstFile(buf, &data);
- if (h == INVALID_HANDLE_VALUE) {
- PyErr_Format(PyExc_NameError,
- "Can't find file for module %.100s\n(filename %.300s)",
- name, buf);
- return 0;
- }
- FindClose(h);
- if (allcaps8x3(data.cFileName)) {
- /* Skip the test if the filename is ALL.CAPS. This can
- happen in certain circumstances beyond our control,
- e.g. when software is installed under NT on a FAT
- filesystem and then the same FAT filesystem is used
- under Windows 95. */
- return 1;
- }
- if (strncmp(data.cFileName, name, namelen) != 0) {
- strcpy(buf+len-namelen, data.cFileName);
- PyErr_Format(PyExc_NameError,
- "Case mismatch for module name %.100s\n(filename %.300s)",
- name, buf);
- return 0;
- }
- return 1;
- }
- #endif /* MS_WIN32 */
-
- #ifdef macintosh
- #include <TextUtils.h>
- #ifdef USE_GUSI
- #include "TFileSpec.h" /* for Path2FSSpec() */
- #endif
- static int
- check_case(char *buf, int len, int namelen, char *name)
- {
- FSSpec fss;
- OSErr err;
- #ifndef USE_GUSI
- err = FSMakeFSSpec(0, 0, Pstring(buf), &fss);
- #else
- /* GUSI's Path2FSSpec() resolves all possible aliases nicely on
- the way, which is fine for all directories, but here we need
- the original name of the alias file (say, Dlg.ppc.slb, not
- toolboxmodules.ppc.slb). */
- char *colon;
- err = Path2FSSpec(buf, &fss);
- if (err == noErr) {
- colon = strrchr(buf, ':'); /* find filename */
- if (colon != NULL)
- err = FSMakeFSSpec(fss.vRefNum, fss.parID,
- Pstring(colon+1), &fss);
- else
- err = FSMakeFSSpec(fss.vRefNum, fss.parID,
- fss.name, &fss);
- }
- #endif
- if (err) {
- PyErr_Format(PyExc_NameError,
- "Can't find file for module %.100s\n(filename %.300s)",
- name, buf);
- return 0;
- }
- p2cstr(fss.name);
- if ( strncmp(name, (char *)fss.name, namelen) != 0 ) {
- PyErr_Format(PyExc_NameError,
- "Case mismatch for module name %.100s\n(filename %.300s)",
- name, fss.name);
- return 0;
- }
- return 1;
- }
- #endif /* macintosh */
-
- #ifdef DJGPP
- #include <dir.h>
-
- static int
- check_case(char *buf, int len, int namelen, char *name)
- {
- struct ffblk ffblk;
- int done;
-
- if (getenv("PYTHONCASEOK") != NULL)
- return 1;
- done = findfirst(buf, &ffblk, FA_ARCH|FA_RDONLY|FA_HIDDEN|FA_DIREC);
- if (done) {
- PyErr_Format(PyExc_NameError,
- "Can't find file for module %.100s\n(filename %.300s)",
- name, buf);
- return 0;
- }
-
- if (strncmp(ffblk.ff_name, name, namelen) != 0) {
- strcpy(buf+len-namelen, ffblk.ff_name);
- PyErr_Format(PyExc_NameError,
- "Case mismatch for module name %.100s\n(filename %.300s)",
- name, buf);
- return 0;
- }
- return 1;
- }
- #endif
-
- #endif /* CHECK_IMPORT_CASE */
-
- #ifdef HAVE_STAT
- /* Helper to look for __init__.py or __init__.py[co] in potential package */
- static int
- find_init_module(buf)
- char *buf;
- {
- int save_len = strlen(buf);
- int i = save_len;
- struct stat statbuf;
-
- if (save_len + 13 >= MAXPATHLEN)
- return 0;
- buf[i++] = SEP;
- strcpy(buf+i, "__init__.py");
- if (stat(buf, &statbuf) == 0) {
- buf[save_len] = '\0';
- return 1;
- }
- i += strlen(buf+i);
- if (Py_OptimizeFlag)
- strcpy(buf+i, "o");
- else
- strcpy(buf+i, "c");
- if (stat(buf, &statbuf) == 0) {
- buf[save_len] = '\0';
- return 1;
- }
- buf[save_len] = '\0';
- return 0;
- }
- #endif /* HAVE_STAT */
-
-
- static int init_builtin Py_PROTO((char *)) SEG_IMPORT_C; /* Forward */
-
- /* Load an external module using the default search path and return
- its module object WITH INCREMENTED REFERENCE COUNT */
-
- static PyObject *
- load_module(name, fp, buf, type)
- char *name;
- FILE *fp;
- char *buf;
- int type;
- {
- PyObject *modules;
- PyObject *m;
- int err;
-
- /* First check that there's an open file (if we need one) */
- switch (type) {
- case PY_SOURCE:
- case PY_COMPILED:
- if (fp == NULL) {
- PyErr_Format(PyExc_ValueError,
- "file object required for import (type code %d)",
- type);
- return NULL;
- }
- }
-
- switch (type) {
-
- case PY_SOURCE:
- #ifndef WITHOUT_COMPILER
- m = load_source_module(name, buf, fp);
- #else /* !WITHOUT_COMPILER */
- PyErr_SetString(PyExc_MissingFeatureError,
- "Compiling is not allowed");
- m = NULL;
- #endif /* !WITHOUT_COMPILER */
- break;
-
- case PY_COMPILED:
- m = load_compiled_module(name, buf, fp);
- break;
-
- #ifdef HAVE_DYNAMIC_LOADING
- case C_EXTENSION:
- m = _PyImport_LoadDynamicModule(name, buf, fp);
- break;
- #endif
-
- #ifdef macintosh
- case PY_RESOURCE:
- m = PyMac_LoadResourceModule(name, buf);
- break;
- case PY_CODERESOURCE:
- m = PyMac_LoadCodeResourceModule(name, buf);
- break;
- #endif
-
- case PKG_DIRECTORY:
- m = load_package(name, buf);
- break;
-
- case C_BUILTIN:
- case PY_FROZEN:
- if (buf != NULL && buf[0] != '\0')
- name = buf;
- if (type == C_BUILTIN)
- err = init_builtin(name);
- else
- err = PyImport_ImportFrozenModule(name);
- if (err < 0)
- return NULL;
- if (err == 0) {
- PyErr_Format(PyExc_ImportError,
- "Purported %s module %.200s not found",
- type == C_BUILTIN ?
- "builtin" : "frozen",
- name);
- return NULL;
- }
- modules = PyImport_GetModuleDict();
- m = PyDict_GetItemString(modules, name);
- if (m == NULL) {
- PyErr_Format(
- PyExc_ImportError,
- "%s module %.200s not properly initialized",
- type == C_BUILTIN ?
- "builtin" : "frozen",
- name);
- return NULL;
- }
- Py_INCREF(m);
- break;
-
- default:
- PyErr_Format(PyExc_ImportError,
- "Don't know how to import %.200s (type code %d)",
- name, type);
- m = NULL;
-
- }
-
- return m;
- }
-
-
- /* Initialize a built-in module.
- Return 1 for succes, 0 if the module is not found, and -1 with
- an exception set if the initialization failed. */
-
- static int
- init_builtin(name)
- char *name;
- {
- struct _inittab *p;
- PyObject *mod;
-
- if ((mod = _PyImport_FindExtension(name, name)) != NULL)
- return 1;
-
- for (p = PyImport_Inittab; p->name != NULL; p++) {
- if (strcmp(name, p->name) == 0) {
- if (p->initfunc == NULL) {
- PyErr_Format(PyExc_ImportError,
- "Cannot re-init internal module %.200s",
- name);
- return -1;
- }
- if (Py_VerboseFlag)
- PySys_WriteStderr("import %s # builtin\n", name);
- (*p->initfunc)();
- if (PyErr_Occurred())
- return -1;
- if (_PyImport_FixupExtension(name, name) == NULL)
- return -1;
- return 1;
- }
- }
- return 0;
- }
-
-
- /* Frozen modules */
-
- static struct _frozen *
- find_frozen(name)
- char *name;
- {
- struct _frozen *p;
-
- for (p = PyImport_FrozenModules; ; p++) {
- if (p->name == NULL)
- return NULL;
- if (strcmp(p->name, name) == 0)
- break;
- }
- return p;
- }
-
- static PyObject *
- get_frozen_object(name)
- char *name;
- {
- struct _frozen *p = find_frozen(name);
- int size;
-
- if (p == NULL) {
- PyErr_Format(PyExc_ImportError,
- "No such frozen object named %.200s",
- name);
- return NULL;
- }
- size = p->size;
- if (size < 0)
- size = -size;
- return PyMarshal_ReadObjectFromString((char *)p->code, size);
- }
-
- /* Initialize a frozen module.
- Return 1 for success, 0 if the module is not found, and -1 with
- an exception set if the initialization failed.
- This function is also used from frozenmain.c */
-
- int
- PyImport_ImportFrozenModule(name)
- char *name;
- {
- struct _frozen *p = find_frozen(name);
- PyObject *co;
- PyObject *m;
- int ispackage;
- int size;
-
- if (p == NULL)
- return 0;
- size = p->size;
- ispackage = (size < 0);
- if (ispackage)
- size = -size;
- if (Py_VerboseFlag)
- PySys_WriteStderr("import %s # frozen%s\n",
- name, ispackage ? " package" : "");
- DMESSAGE("Marshalling");
- /* printf("begin marshalling %s\n", name); */
- co = PyMarshal_ReadObjectFromString((char *)p->code, size);
- /* printf("end marshalling %s\n", name); */
- if (co == NULL) DMESSAGE("Marshalling failed");
- if (co == NULL)
- return -1;
- if (!PyCode_Check(co)) {
- DMESSAGE("OOPS - not a code object")
- Py_DECREF(co);
- PyErr_Format(PyExc_TypeError,
- "frozen object %.200s is not a code object",
- name);
- return -1;
- }
- if (ispackage) {
- /* Set __path__ to the package name */
- PyObject *d, *s;
- int err;
- m = PyImport_AddModule(name);
- if (m == NULL)
- return -1;
- d = PyModule_GetDict(m);
- s = PyString_InternFromString(name);
- if (s == NULL)
- return -1;
- err = PyDict_SetItemString(d, "__path__", s);
- Py_DECREF(s);
- if (err != 0)
- return err;
- }
- DMESSAGE("Executing");
- /* printf("executing %s\n", name); */
- m = PyImport_ExecCodeModuleEx(name, co, "<frozen>");
- /* printf("done executing %s\n", name); */
- DMESSAGE("Done Executing");
- Py_DECREF(co);
- if (m == NULL) DMESSAGE("Execution failed");
- if (m == NULL)
- return -1;
- Py_DECREF(m);
- return 1;
- }
-
-
- /* Import a module, either built-in, frozen, or external, and return
- its module object WITH INCREMENTED REFERENCE COUNT */
-
- PyObject *
- PyImport_ImportModule(name)
- char *name;
- {
- static PyObject *fromlist = NULL;
- if (fromlist == NULL && strchr(name, '.') != NULL) {
- fromlist = Py_BuildValue("[s]", "*");
- if (fromlist == NULL)
- return NULL;
- }
- return PyImport_ImportModuleEx(name, NULL, NULL, fromlist);
- }
-
- /* Forward declarations for helper routines */
- static PyObject *get_parent Py_PROTO((PyObject *globals,
- char *buf, int *p_buflen)) SEG_IMPORT_C;
- static PyObject *load_next Py_PROTO((PyObject *mod, PyObject *altmod,
- char **p_name, char *buf, int *p_buflen)) SEG_IMPORT_C;
- static int mark_miss Py_PROTO((char *name)) SEG_IMPORT_C;
- static int ensure_fromlist Py_PROTO((PyObject *mod, PyObject *fromlist,
- char *buf, int buflen, int recursive)) SEG_IMPORT_C;
- static PyObject * import_submodule Py_PROTO((PyObject *mod,
- char *name, char *fullname)) SEG_IMPORT_C;
-
- /* The Magnum Opus of dotted-name import :-) */
-
- static PyObject *
- import_module_ex(name, globals, locals, fromlist)
- char *name;
- PyObject *globals;
- PyObject *locals;
- PyObject *fromlist;
- {
- char buf[MAXPATHLEN+1];
- int buflen = 0;
- PyObject *parent, *head, *next, *tail;
-
- parent = get_parent(globals, buf, &buflen);
- if (parent == NULL)
- return NULL;
-
- head = load_next(parent, Py_None, &name, buf, &buflen);
- if (head == NULL)
- return NULL;
-
- tail = head;
- Py_INCREF(tail);
- while (name) {
- next = load_next(tail, tail, &name, buf, &buflen);
- Py_DECREF(tail);
- if (next == NULL) {
- Py_DECREF(head);
- return NULL;
- }
- tail = next;
- }
-
- if (fromlist != NULL) {
- if (fromlist == Py_None || !PyObject_IsTrue(fromlist))
- fromlist = NULL;
- }
-
- if (fromlist == NULL) {
- Py_DECREF(tail);
- return head;
- }
-
- Py_DECREF(head);
- if (!ensure_fromlist(tail, fromlist, buf, buflen, 0)) {
- Py_DECREF(tail);
- return NULL;
- }
-
- return tail;
- }
-
- PyObject *
- PyImport_ImportModuleEx(name, globals, locals, fromlist)
- char *name;
- PyObject *globals;
- PyObject *locals;
- PyObject *fromlist;
- {
- PyObject *result;
- lock_import();
- result = import_module_ex(name, globals, locals, fromlist);
- unlock_import();
- return result;
- }
-
- static PyObject *
- get_parent(globals, buf, p_buflen)
- PyObject *globals;
- char *buf;
- int *p_buflen;
- {
- static PyObject *namestr = NULL;
- static PyObject *pathstr = NULL;
- PyObject *modname, *modpath, *modules, *parent;
-
- if (globals == NULL || !PyDict_Check(globals))
- return Py_None;
-
- if (namestr == NULL) {
- namestr = PyString_InternFromString("__name__");
- if (namestr == NULL)
- return NULL;
- }
- if (pathstr == NULL) {
- pathstr = PyString_InternFromString("__path__");
- if (pathstr == NULL)
- return NULL;
- }
-
- *buf = '\0';
- *p_buflen = 0;
- modname = PyDict_GetItem(globals, namestr);
- if (modname == NULL || !PyString_Check(modname))
- return Py_None;
-
- modpath = PyDict_GetItem(globals, pathstr);
- if (modpath != NULL) {
- int len = PyString_GET_SIZE(modname);
- if (len > MAXPATHLEN) {
- PyErr_SetString(PyExc_ValueError,
- "Module name too long");
- return NULL;
- }
- strcpy(buf, PyString_AS_STRING(modname));
- *p_buflen = len;
- }
- else {
- char *start = PyString_AS_STRING(modname);
- char *lastdot = strrchr(start, '.');
- int len;
- if (lastdot == NULL)
- return Py_None;
- len = lastdot - start;
- if (len >= MAXPATHLEN) {
- PyErr_SetString(PyExc_ValueError,
- "Module name too long");
- return NULL;
- }
- strncpy(buf, start, len);
- buf[len] = '\0';
- *p_buflen = len;
- }
-
- modules = PyImport_GetModuleDict();
- parent = PyDict_GetItemString(modules, buf);
- if (parent == NULL)
- parent = Py_None;
- return parent;
- /* We expect, but can't guarantee, if parent != None, that:
- - parent.__name__ == buf
- - parent.__dict__ is globals
- If this is violated... Who cares? */
- }
-
- static PyObject *
- load_next(mod, altmod, p_name, buf, p_buflen)
- PyObject *mod;
- PyObject *altmod; /* Either None or same as mod */
- char **p_name;
- char *buf;
- int *p_buflen;
- {
- char *name = *p_name;
- char *dot = strchr(name, '.');
- int len;
- char *p;
- PyObject *result;
-
- if (dot == NULL) {
- *p_name = NULL;
- len = strlen(name);
- }
- else {
- *p_name = dot+1;
- len = dot-name;
- }
- if (len == 0) {
- PyErr_SetString(PyExc_ValueError,
- "Empty module name");
- return NULL;
- }
-
- p = buf + *p_buflen;
- if (p != buf)
- *p++ = '.';
- if (p+len-buf >= MAXPATHLEN) {
- PyErr_SetString(PyExc_ValueError,
- "Module name too long");
- return NULL;
- }
- strncpy(p, name, len);
- p[len] = '\0';
- *p_buflen = p+len-buf;
-
- result = import_submodule(mod, p, buf);
- if (result == Py_None && altmod != mod) {
- Py_DECREF(result);
- /* Here, altmod must be None and mod must not be None */
- result = import_submodule(altmod, p, p);
- if (result != NULL && result != Py_None) {
- if (mark_miss(buf) != 0) {
- Py_DECREF(result);
- return NULL;
- }
- strncpy(buf, name, len);
- buf[len] = '\0';
- *p_buflen = len;
- }
- }
- if (result == NULL)
- return NULL;
-
- if (result == Py_None) {
- Py_DECREF(result);
- PyErr_Format(PyExc_ImportError,
- "No module named %.200s", name);
- return NULL;
- }
-
- return result;
- }
-
- static int
- mark_miss(name)
- char *name;
- {
- PyObject *modules = PyImport_GetModuleDict();
- return PyDict_SetItemString(modules, name, Py_None);
- }
-
- static int
- ensure_fromlist(mod, fromlist, buf, buflen, recursive)
- PyObject *mod;
- PyObject *fromlist;
- char *buf;
- int buflen;
- int recursive;
- {
- int i;
-
- if (!PyObject_HasAttrString(mod, "__path__"))
- return 1;
-
- for (i = 0; ; i++) {
- PyObject *item = PySequence_GetItem(fromlist, i);
- int hasit;
- if (item == NULL) {
- if (PyErr_ExceptionMatches(PyExc_IndexError)) {
- PyErr_Clear();
- return 1;
- }
- return 0;
- }
- if (!PyString_Check(item)) {
- PyErr_SetString(PyExc_TypeError,
- "Item in ``from list'' not a string");
- Py_DECREF(item);
- return 0;
- }
- if (PyString_AS_STRING(item)[0] == '*') {
- PyObject *all;
- Py_DECREF(item);
- /* See if the package defines __all__ */
- if (recursive)
- continue; /* Avoid endless recursion */
- all = PyObject_GetAttrString(mod, "__all__");
- if (all == NULL)
- PyErr_Clear();
- else {
- if (!ensure_fromlist(mod, all, buf, buflen, 1))
- return 0;
- Py_DECREF(all);
- }
- continue;
- }
- hasit = PyObject_HasAttr(mod, item);
- if (!hasit) {
- char *subname = PyString_AS_STRING(item);
- PyObject *submod;
- char *p;
- if (buflen + strlen(subname) >= MAXPATHLEN) {
- PyErr_SetString(PyExc_ValueError,
- "Module name too long");
- Py_DECREF(item);
- return 0;
- }
- p = buf + buflen;
- *p++ = '.';
- strcpy(p, subname);
- submod = import_submodule(mod, subname, buf);
- Py_XDECREF(submod);
- if (submod == NULL) {
- Py_DECREF(item);
- return 0;
- }
- }
- Py_DECREF(item);
- }
-
- /* NOTREACHED */
- }
-
- static PyObject *
- import_submodule(mod, subname, fullname)
- PyObject *mod; /* May be None */
- char *subname;
- char *fullname;
- {
- PyObject *modules = PyImport_GetModuleDict();
- PyObject *m;
-
- /* Require:
- if mod == None: subname == fullname
- else: mod.__name__ + "." + subname == fullname
- */
-
- if ((m = PyDict_GetItemString(modules, fullname)) != NULL) {
- Py_INCREF(m);
- }
- else {
- PyObject *path;
- char buf[MAXPATHLEN+1];
- struct filedescr *fdp;
- FILE *fp = NULL;
-
- if (mod == Py_None)
- path = NULL;
- else {
- path = PyObject_GetAttrString(mod, "__path__");
- if (path == NULL) {
- PyErr_Clear();
- Py_INCREF(Py_None);
- return Py_None;
- }
- }
-
- buf[0] = '\0';
- fdp = find_module(subname, path, buf, MAXPATHLEN+1, &fp);
- Py_XDECREF(path);
- if (fdp == NULL) {
- if (!PyErr_ExceptionMatches(PyExc_ImportError))
- return NULL;
- PyErr_Clear();
- Py_INCREF(Py_None);
- return Py_None;
- }
- m = load_module(fullname, fp, buf, fdp->type);
- if (fp)
- fclose(fp);
- if (m != NULL && mod != Py_None) {
- if (PyObject_SetAttrString(mod, subname, m) < 0) {
- Py_DECREF(m);
- m = NULL;
- }
- }
- }
-
- return m;
- }
-
-
- /* Re-import a module of any kind and return its module object, WITH
- INCREMENTED REFERENCE COUNT */
-
- PyObject *
- PyImport_ReloadModule(m)
- PyObject *m;
- {
- PyObject *modules = PyImport_GetModuleDict();
- PyObject *path = NULL;
- char *name, *subname;
- char buf[MAXPATHLEN+1];
- struct filedescr *fdp;
- FILE *fp = NULL;
-
- if (m == NULL || !PyModule_Check(m)) {
- PyErr_SetString(PyExc_TypeError,
- "reload() argument must be module");
- return NULL;
- }
- name = PyModule_GetName(m);
- if (name == NULL)
- return NULL;
- if (m != PyDict_GetItemString(modules, name)) {
- PyErr_Format(PyExc_ImportError,
- "reload(): module %.200s not in sys.modules",
- name);
- return NULL;
- }
- subname = strrchr(name, '.');
- if (subname == NULL)
- subname = name;
- else {
- PyObject *parentname, *parent;
- parentname = PyString_FromStringAndSize(name, (subname-name));
- if (parentname == NULL)
- return NULL;
- parent = PyDict_GetItem(modules, parentname);
- Py_DECREF(parentname);
- if (parent == NULL) {
- PyErr_Format(PyExc_ImportError,
- "reload(): parent %.200s not in sys.modules",
- name);
- return NULL;
- }
- subname++;
- path = PyObject_GetAttrString(parent, "__path__");
- if (path == NULL)
- PyErr_Clear();
- }
- buf[0] = '\0';
- fdp = find_module(subname, path, buf, MAXPATHLEN+1, &fp);
- Py_XDECREF(path);
- if (fdp == NULL)
- return NULL;
- m = load_module(name, fp, buf, fdp->type);
- if (fp)
- fclose(fp);
- return m;
- }
-
-
- /* Higher-level import emulator which emulates the "import" statement
- more accurately -- it invokes the __import__() function from the
- builtins of the current globals. This means that the import is
- done using whatever import hooks are installed in the current
- environment, e.g. by "rexec".
- A dummy list ["__doc__"] is passed as the 4th argument so that
- e.g. PyImport_Import(PyString_FromString("win32com.client.gencache"))
- will return <module "gencache"> instead of <module "win32com">. */
-
- PyObject *
- PyImport_Import(module_name)
- PyObject *module_name;
- {
- static PyObject *silly_list = NULL;
- static PyObject *builtins_str = NULL;
- static PyObject *import_str = NULL;
- static PyObject *standard_builtins = NULL;
- PyObject *globals = NULL;
- PyObject *import = NULL;
- PyObject *builtins = NULL;
- PyObject *r = NULL;
-
- /* Initialize constant string objects */
- if (silly_list == NULL) {
- import_str = PyString_InternFromString("__import__");
- if (import_str == NULL)
- return NULL;
- builtins_str = PyString_InternFromString("__builtins__");
- if (builtins_str == NULL)
- return NULL;
- silly_list = Py_BuildValue("[s]", "__doc__");
- if (silly_list == NULL)
- return NULL;
- }
-
- /* Get the builtins from current globals */
- globals = PyEval_GetGlobals();
- if(globals != NULL) {
- Py_INCREF(globals);
- builtins = PyObject_GetItem(globals, builtins_str);
- if (builtins == NULL)
- goto err;
- }
- else {
- /* No globals -- use standard builtins, and fake globals */
- PyErr_Clear();
-
- if (standard_builtins == NULL) {
- standard_builtins =
- PyImport_ImportModule("__builtin__");
- if (standard_builtins == NULL)
- return NULL;
- }
-
- builtins = standard_builtins;
- Py_INCREF(builtins);
- globals = Py_BuildValue("{OO}", builtins_str, builtins);
- if (globals == NULL)
- goto err;
- }
-
- /* Get the __import__ function from the builtins */
- if (PyDict_Check(builtins))
- import=PyObject_GetItem(builtins, import_str);
- else
- import=PyObject_GetAttr(builtins, import_str);
- if (import == NULL)
- goto err;
-
- /* Call the _import__ function with the proper argument list */
- r = PyObject_CallFunction(import, "OOOO",
- module_name, globals, globals, silly_list);
-
- err:
- Py_XDECREF(globals);
- Py_XDECREF(builtins);
- Py_XDECREF(import);
-
- return r;
- }
-
-
- /* Module 'imp' provides Python access to the primitives used for
- importing modules.
- */
-
- static PyObject *
- imp_get_magic(self, args)
- PyObject *self;
- PyObject *args;
- {
- char buf[4];
-
- if (!PyArg_ParseTuple(args, ":get_magic"))
- return NULL;
- buf[0] = (char) ((MAGIC >> 0) & 0xff);
- buf[1] = (char) ((MAGIC >> 8) & 0xff);
- buf[2] = (char) ((MAGIC >> 16) & 0xff);
- buf[3] = (char) ((MAGIC >> 24) & 0xff);
-
- return PyString_FromStringAndSize(buf, 4);
- }
-
- static PyObject *
- imp_get_suffixes(self, args)
- PyObject *self;
- PyObject *args;
- {
- PyObject *list;
- struct filedescr *fdp;
-
- if (!PyArg_ParseTuple(args, ":get_suffixes"))
- return NULL;
- list = PyList_New(0);
- if (list == NULL)
- return NULL;
- for (fdp = _PyImport_Filetab; fdp->suffix != NULL; fdp++) {
- PyObject *item = Py_BuildValue("ssi",
- fdp->suffix, fdp->mode, fdp->type);
- if (item == NULL) {
- Py_DECREF(list);
- return NULL;
- }
- if (PyList_Append(list, item) < 0) {
- Py_DECREF(list);
- Py_DECREF(item);
- return NULL;
- }
- Py_DECREF(item);
- }
- return list;
- }
-
- static PyObject *
- call_find_module(name, path)
- char *name;
- PyObject *path; /* list or None or NULL */
- {
- extern int fclose Py_PROTO((FILE *));
- PyObject *fob, *ret;
- struct filedescr *fdp;
- char pathname[MAXPATHLEN+1];
- FILE *fp = NULL;
-
- pathname[0] = '\0';
- if (path == Py_None)
- path = NULL;
- fdp = find_module(name, path, pathname, MAXPATHLEN+1, &fp);
- if (fdp == NULL)
- return NULL;
- if (fp != NULL) {
- fob = PyFile_FromFile(fp, pathname, fdp->mode, fclose);
- if (fob == NULL) {
- fclose(fp);
- return NULL;
- }
- }
- else {
- fob = Py_None;
- Py_INCREF(fob);
- }
- ret = Py_BuildValue("Os(ssi)",
- fob, pathname, fdp->suffix, fdp->mode, fdp->type);
- Py_DECREF(fob);
- return ret;
- }
-
- static PyObject *
- imp_find_module(self, args)
- PyObject *self;
- PyObject *args;
- {
- char *name;
- PyObject *path = NULL;
- if (!PyArg_ParseTuple(args, "s|O:find_module", &name, &path))
- return NULL;
- return call_find_module(name, path);
- }
-
- static PyObject *
- imp_init_builtin(self, args)
- PyObject *self;
- PyObject *args;
- {
- char *name;
- int ret;
- PyObject *m;
- if (!PyArg_ParseTuple(args, "s:init_builtin", &name))
- return NULL;
- ret = init_builtin(name);
- if (ret < 0)
- return NULL;
- if (ret == 0) {
- Py_INCREF(Py_None);
- return Py_None;
- }
- m = PyImport_AddModule(name);
- Py_XINCREF(m);
- return m;
- }
-
- static PyObject *
- imp_init_frozen(self, args)
- PyObject *self;
- PyObject *args;
- {
- char *name;
- int ret;
- PyObject *m;
- if (!PyArg_ParseTuple(args, "s:init_frozen", &name))
- return NULL;
- ret = PyImport_ImportFrozenModule(name);
- if (ret < 0)
- return NULL;
- if (ret == 0) {
- Py_INCREF(Py_None);
- return Py_None;
- }
- m = PyImport_AddModule(name);
- Py_XINCREF(m);
- return m;
- }
-
- static PyObject *
- imp_get_frozen_object(self, args)
- PyObject *self;
- PyObject *args;
- {
- char *name;
-
- if (!PyArg_ParseTuple(args, "s:get_frozen_object", &name))
- return NULL;
- return get_frozen_object(name);
- }
-
- static PyObject *
- imp_is_builtin(self, args)
- PyObject *self;
- PyObject *args;
- {
- char *name;
- if (!PyArg_ParseTuple(args, "s:is_builtin", &name))
- return NULL;
- return PyInt_FromLong(is_builtin(name));
- }
-
- static PyObject *
- imp_is_frozen(self, args)
- PyObject *self;
- PyObject *args;
- {
- char *name;
- struct _frozen *p;
- if (!PyArg_ParseTuple(args, "s:is_frozen", &name))
- return NULL;
- p = find_frozen(name);
- return PyInt_FromLong((long) (p == NULL ? 0 : p->size));
- }
-
- static FILE *
- get_file(pathname, fob, mode)
- char *pathname;
- PyObject *fob;
- char *mode;
- {
- FILE *fp;
- if (fob == NULL) {
- fp = fopen(pathname, mode);
- if (fp == NULL)
- PyErr_SetFromErrno(PyExc_IOError);
- }
- else {
- fp = PyFile_AsFile(fob);
- if (fp == NULL)
- PyErr_SetString(PyExc_ValueError,
- "bad/closed file object");
- }
- return fp;
- }
-
- static PyObject *
- imp_load_compiled(self, args)
- PyObject *self;
- PyObject *args;
- {
- char *name;
- char *pathname;
- PyObject *fob = NULL;
- PyObject *m;
- FILE *fp;
- if (!PyArg_ParseTuple(args, "ss|O!:load_compiled", &name, &pathname,
- &PyFile_Type, &fob))
- return NULL;
- fp = get_file(pathname, fob, "rb");
- if (fp == NULL)
- return NULL;
- m = load_compiled_module(name, pathname, fp);
- if (fob == NULL)
- fclose(fp);
- return m;
- }
-
- #ifdef HAVE_DYNAMIC_LOADING
-
- static PyObject *
- imp_load_dynamic(self, args)
- PyObject *self;
- PyObject *args;
- {
- char *name;
- char *pathname;
- PyObject *fob = NULL;
- PyObject *m;
- FILE *fp = NULL;
- if (!PyArg_ParseTuple(args, "ss|O!:load_dynamic", &name, &pathname,
- &PyFile_Type, &fob))
- return NULL;
- if (fob) {
- fp = get_file(pathname, fob, "r");
- if (fp == NULL)
- return NULL;
- }
- m = _PyImport_LoadDynamicModule(name, pathname, fp);
- return m;
- }
-
- #endif /* HAVE_DYNAMIC_LOADING */
-
- static PyObject *
- imp_load_source(self, args)
- PyObject *self;
- PyObject *args;
- #ifndef WITHOUT_COMPILER
- {
- char *name;
- char *pathname;
- PyObject *fob = NULL;
- PyObject *m;
- FILE *fp;
- if (!PyArg_ParseTuple(args, "ss|O!:load_source", &name, &pathname,
- &PyFile_Type, &fob))
- return NULL;
- fp = get_file(pathname, fob, "r");
- if (fp == NULL)
- return NULL;
- m = load_source_module(name, pathname, fp);
- if (fob == NULL)
- fclose(fp);
- return m;
- }
- #else /* !WITHOUT_COMPILER */
- {
- PyErr_SetString(PyExc_MissingFeatureError,
- "Compiling is not allowed");
- return NULL;
- }
- #endif /* !WITHOUT_COMPILER */
-
-
- #ifdef macintosh
- static PyObject *
- imp_load_resource(self, args)
- PyObject *self;
- PyObject *args;
- {
- char *name;
- char *pathname;
- PyObject *m;
-
- if (!PyArg_ParseTuple(args, "ss:load_resource", &name, &pathname))
- return NULL;
- m = PyMac_LoadResourceModule(name, pathname);
- return m;
- }
- #endif /* macintosh */
-
- static PyObject *
- imp_load_module(self, args)
- PyObject *self;
- PyObject *args;
- {
- char *name;
- PyObject *fob;
- char *pathname;
- char *suffix; /* Unused */
- char *mode;
- int type;
- FILE *fp;
-
- if (!PyArg_ParseTuple(args, "sOs(ssi):load_module",
- &name, &fob, &pathname,
- &suffix, &mode, &type))
- return NULL;
- if (*mode && (*mode != 'r' || strchr(mode, '+') != NULL)) {
- PyErr_Format(PyExc_ValueError,
- "invalid file open mode %.200s", mode);
- return NULL;
- }
- if (fob == Py_None)
- fp = NULL;
- else {
- if (!PyFile_Check(fob)) {
- PyErr_SetString(PyExc_ValueError,
- "load_module arg#2 should be a file or None");
- return NULL;
- }
- fp = get_file(pathname, fob, mode);
- if (fp == NULL)
- return NULL;
- }
- return load_module(name, fp, pathname, type);
- }
-
- static PyObject *
- imp_load_package(self, args)
- PyObject *self;
- PyObject *args;
- {
- char *name;
- char *pathname;
- if (!PyArg_ParseTuple(args, "ss:load_package", &name, &pathname))
- return NULL;
- return load_package(name, pathname);
- }
-
- static PyObject *
- imp_new_module(self, args)
- PyObject *self;
- PyObject *args;
- {
- char *name;
- if (!PyArg_ParseTuple(args, "s:new_module", &name))
- return NULL;
- return PyModule_New(name);
- }
-
- /* Doc strings */
-
- DEF_DOC(doc_imp,
- "This module provides the components needed to build your own\n\
- __import__ function. Undocumented functions are obsolete.\n\
- ");
-
- DEF_DOC(doc_find_module,
- "find_module(name, [path]) -> (file, filename, (suffix, mode, type))\n\
- Search for a module. If path is omitted or None, search for a\n\
- built-in, frozen or special module and continue search in sys.path.\n\
- The module name cannot contain '.'; to search for a submodule of a\n\
- package, pass the submodule name and the package's __path__.\
- ");
-
- DEF_DOC(doc_load_module,
- "load_module(name, file, filename, (suffix, mode, type)) -> module\n\
- Load a module, given information returned by find_module().\n\
- The module name must include the full package name, if any.\
- ");
-
- DEF_DOC(doc_get_magic,
- "get_magic() -> string\n\
- Return the magic number for .pyc or .pyo files.\
- ");
-
- DEF_DOC(doc_get_suffixes,
- "get_suffixes() -> [(suffix, mode, type), ...]\n\
- Return a list of (suffix, mode, type) tuples describing the files\n\
- that find_module() looks for.\
- ");
-
- DEF_DOC(doc_new_module,
- "new_module(name) -> module\n\
- Create a new module. Do not enter it in sys.modules.\n\
- The module name must include the full package name, if any.\
- ");
-
- static PyMethodDef imp_methods[] = {
- {"find_module", imp_find_module, 1, USE_DOC(doc_find_module)},
- {"get_magic", imp_get_magic, 1, USE_DOC(doc_get_magic)},
- {"get_suffixes", imp_get_suffixes, 1, USE_DOC(doc_get_suffixes)},
- {"load_module", imp_load_module, 1, USE_DOC(doc_load_module)},
- {"new_module", imp_new_module, 1, USE_DOC(doc_new_module)},
- /* The rest are obsolete */
- {"get_frozen_object", imp_get_frozen_object, 1},
- {"init_builtin", imp_init_builtin, 1},
- {"init_frozen", imp_init_frozen, 1},
- {"is_builtin", imp_is_builtin, 1},
- {"is_frozen", imp_is_frozen, 1},
- {"load_compiled", imp_load_compiled, 1},
- #ifdef HAVE_DYNAMIC_LOADING
- {"load_dynamic", imp_load_dynamic, 1},
- #endif
- {"load_package", imp_load_package, 1},
- #ifdef macintosh
- {"load_resource", imp_load_resource, 1},
- #endif
- {"load_source", imp_load_source, 1},
- {NULL, NULL} /* sentinel */
- };
-
- static int
- setint(d, name, value)
- PyObject *d;
- char *name;
- int value;
- {
- PyObject *v;
- int err;
-
- v = PyInt_FromLong((long)value);
- err = PyDict_SetItemString(d, name, v);
- Py_XDECREF(v);
- return err;
- }
-
- void initimp() SEG_IMPORT_C;
- void
- initimp()
- {
- PyObject *m, *d;
-
- m = Py_InitModule4("imp", imp_methods, USE_DOC(doc_imp),
- NULL, PYTHON_API_VERSION);
- d = PyModule_GetDict(m);
-
- if (setint(d, "SEARCH_ERROR", SEARCH_ERROR) < 0) goto failure;
- if (setint(d, "PY_SOURCE", PY_SOURCE) < 0) goto failure;
- if (setint(d, "PY_COMPILED", PY_COMPILED) < 0) goto failure;
- if (setint(d, "C_EXTENSION", C_EXTENSION) < 0) goto failure;
- if (setint(d, "PY_RESOURCE", PY_RESOURCE) < 0) goto failure;
- if (setint(d, "PKG_DIRECTORY", PKG_DIRECTORY) < 0) goto failure;
- if (setint(d, "C_BUILTIN", C_BUILTIN) < 0) goto failure;
- if (setint(d, "PY_FROZEN", PY_FROZEN) < 0) goto failure;
- if (setint(d, "PY_CODERESOURCE", PY_CODERESOURCE) < 0) goto failure;
-
- failure:
- ;
- }
-
-
- /* API for embedding applications that want to add their own entries to the
- table of built-in modules. This should normally be called *before*
- Py_Initialize(). When the malloc() or realloc() call fails, -1 is returned
- and the existing table is unchanged.
-
- After a similar function by Just van Rossum. */
-
- int
- PyImport_ExtendInittab(newtab)
- struct _inittab *newtab;
- {
- static struct _inittab *our_copy = NULL;
- struct _inittab *p;
- int i, n;
-
- /* Count the number of entries in both tables */
- for (n = 0; newtab[n].name != NULL; n++)
- ;
- if (n == 0)
- return 0; /* Nothing to do */
- for (i = 0; PyImport_Inittab[i].name != NULL; i++)
- ;
-
- /* Allocate new memory for the combined table */
- if (our_copy == NULL)
- p = malloc((i+n+1) * sizeof(struct _inittab));
- else
- p = realloc(our_copy, (i+n+1) * sizeof(struct _inittab));
- if (p == NULL)
- return -1;
-
- /* Copy the tables into the new memory */
- if (our_copy != PyImport_Inittab)
- memcpy(p, PyImport_Inittab, (i+1) * sizeof(struct _inittab));
- PyImport_Inittab = our_copy = p;
- memcpy(p+i, newtab, (n+1) * sizeof(struct _inittab));
-
- return 0;
- }
-
- /* Shorthand to add a single entry given a name and a function */
-
- int
- PyImport_AppendInittab(name, initfunc)
- char *name;
- void (*initfunc)();
- {
- struct _inittab newtab[2];
-
- memset(newtab, '\0', sizeof newtab);
-
- newtab[0].name = name;
- newtab[0].initfunc = initfunc;
-
- return PyImport_ExtendInittab(newtab);
- }
-