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py/modio: resource_stream: Implement "package" param handling.

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This commit is contained in:
Paul Sokolovsky 2017-05-06 18:42:35 +03:00
parent c1e0eb7afe
commit 4a4490ffcc
3 changed files with 34 additions and 8 deletions
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35
py/modio.c
View File

@ -133,13 +133,39 @@ STATIC const mp_obj_type_t bufwriter_type = {
#if MICROPY_MODULE_FROZEN_STR
STATIC mp_obj_t resource_stream(mp_obj_t package_in, mp_obj_t path_in) {
VSTR_FIXED(path_buf, MICROPY_ALLOC_PATH_MAX);
size_t len;
// As an extension to pkg_resources.resource_stream(), we support
// package parameter being None, the path_in is interpreted as a
// raw path.
if (package_in != mp_const_none) {
mp_not_implemented("");
mp_obj_t args[5];
args[0] = package_in;
args[1] = mp_const_none; // TODO should be globals
args[2] = mp_const_none; // TODO should be locals
args[3] = mp_const_true; // Pass sentinel "non empty" value to force returning of leaf module
args[4] = MP_OBJ_NEW_SMALL_INT(0);
// TODO lookup __import__ and call that instead of going straight to builtin implementation
mp_obj_t pkg = mp_builtin___import__(5, args);
mp_obj_t dest[2];
mp_load_method_maybe(pkg, MP_QSTR___path__, dest);
if (dest[0] == MP_OBJ_NULL) {
mp_raise_TypeError(NULL);
}
const char *path = mp_obj_str_get_data(dest[0], &len);
vstr_add_strn(&path_buf, path, len);
vstr_add_byte(&path_buf, '/');
}
size_t len;
const char *path = mp_obj_str_get_data(path_in, &len);
const char *data = mp_find_frozen_str(path, &len);
vstr_add_strn(&path_buf, path, len);
len = path_buf.len;
const char *data = mp_find_frozen_str(path_buf.buf, &len);
if (data != NULL) {
mp_obj_stringio_t *o = m_new_obj(mp_obj_stringio_t);
o->base.type = &mp_type_bytesio;
@ -150,7 +176,8 @@ STATIC mp_obj_t resource_stream(mp_obj_t package_in, mp_obj_t path_in) {
return MP_OBJ_FROM_PTR(o);
}
return mp_builtin_open(1, &path_in, (mp_map_t*)&mp_const_empty_map);
mp_obj_t path_out = mp_obj_new_str(path_buf.buf, path_buf.len, false);
return mp_builtin_open(1, &path_out, (mp_map_t*)&mp_const_empty_map);
}
MP_DEFINE_CONST_FUN_OBJ_2(resource_stream_obj, resource_stream);
#endif

6
tests/io/resource_stream.py
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@ -7,10 +7,8 @@ except AttributeError:
print('SKIP')
sys.exit()
try:
buf = uio.resource_stream("data", "file2")
except NotImplementedError:
pass
buf = uio.resource_stream("data", "file2")
print(buf.read())
# resource_stream(None, ...) look ups from current dir, hence sys.path[0] hack
buf = uio.resource_stream(None, sys.path[0] + "/data/file2")

1
tests/io/resource_stream.py.exp
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@ -1 +1,2 @@
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