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py/builtinimport: Fix bug when importing names from frozen packages. 

The commit d9047d3c8a introduced a bug
whereby "from a.b import c" stopped working for frozen packages.  This is
because the path was not properly truncated and became "a//b".  Such a
path resolves correctly for a "real" filesystem, but not for a search in
the list of frozen modules.
This commit is contained in:
Damien George 2017-01-08 20:17:23 +11:00
parent b2611d6be3
commit b528e9a428
1 changed files with 2 additions and 2 deletions
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4
py/builtinimport.c
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@ -466,15 +466,15 @@ mp_obj_t mp_builtin___import__(size_t n_args, const mp_obj_t *args) {
// https://docs.python.org/3/reference/import.html // https://docs.python.org/3/reference/import.html
// "Specifically, any module that contains a __path__ attribute is considered a package." // "Specifically, any module that contains a __path__ attribute is considered a package."
mp_store_attr(module_obj, MP_QSTR___path__, mp_obj_new_str(vstr_str(&path), vstr_len(&path), false)); mp_store_attr(module_obj, MP_QSTR___path__, mp_obj_new_str(vstr_str(&path), vstr_len(&path), false));
size_t orig_path_len = path.len;
vstr_add_char(&path, PATH_SEP_CHAR); vstr_add_char(&path, PATH_SEP_CHAR);
vstr_add_str(&path, "__init__.py"); vstr_add_str(&path, "__init__.py");
if (stat_file_py_or_mpy(&path) != MP_IMPORT_STAT_FILE) { if (stat_file_py_or_mpy(&path) != MP_IMPORT_STAT_FILE) {
vstr_cut_tail_bytes(&path, sizeof("/__init__.py") - 1); // cut off /__init__.py
//mp_warning("%s is imported as namespace package", vstr_str(&path)); //mp_warning("%s is imported as namespace package", vstr_str(&path));
} else { } else {
do_load(module_obj, &path); do_load(module_obj, &path);
vstr_cut_tail_bytes(&path, sizeof("/__init__.py") - 1); // cut off /__init__.py
} }
path.len = orig_path_len;
} else { // MP_IMPORT_STAT_FILE } else { // MP_IMPORT_STAT_FILE
do_load(module_obj, &path); do_load(module_obj, &path);
// TODO: We cannot just break here, at the very least, we must execute // TODO: We cannot just break here, at the very least, we must execute