##// END OF EJS Templates
dispatch: don't show list of commands on bogus command...
dispatch: don't show list of commands on bogus command If a command is ambiguous, you get this: $ hg ve hg: command 've' is ambiguous: verify version [255] If you typo a command, you get this: $ hg comit hg: unknown command 'comit' (did you mean one of commit, incoming, mycommit?) [255] But if you completely mistype a command so it no longer looks like any existing commands, you get a full list of commands. That might be useful the first time you use Mercurial, but after that it's probably more annoying than help, especially if you have the pager enabled and have a short terminal. Let's instead give a short hint telling the user to run `hg help` for more help. Differential Revision: https://phab.mercurial-scm.org/D4024

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frameparams.c
138 lines | 4.2 KiB | text/x-c | CLexer
/**
* Copyright (c) 2017-present, Gregory Szorc
* All rights reserved.
*
* This software may be modified and distributed under the terms
* of the BSD license. See the LICENSE file for details.
*/
#include "python-zstandard.h"
extern PyObject* ZstdError;
PyDoc_STRVAR(FrameParameters__doc__,
"FrameParameters: information about a zstd frame");
FrameParametersObject* get_frame_parameters(PyObject* self, PyObject* args, PyObject* kwargs) {
static char* kwlist[] = {
"data",
NULL
};
Py_buffer source;
ZSTD_frameHeader header;
FrameParametersObject* result = NULL;
size_t zresult;
#if PY_MAJOR_VERSION >= 3
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "y*:get_frame_parameters",
#else
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s*:get_frame_parameters",
#endif
kwlist, &source)) {
return NULL;
}
if (!PyBuffer_IsContiguous(&source, 'C') || source.ndim > 1) {
PyErr_SetString(PyExc_ValueError,
"data buffer should be contiguous and have at most one dimension");
goto finally;
}
zresult = ZSTD_getFrameHeader(&header, source.buf, source.len);
if (ZSTD_isError(zresult)) {
PyErr_Format(ZstdError, "cannot get frame parameters: %s", ZSTD_getErrorName(zresult));
goto finally;
}
if (zresult) {
PyErr_Format(ZstdError, "not enough data for frame parameters; need %zu bytes", zresult);
goto finally;
}
result = PyObject_New(FrameParametersObject, &FrameParametersType);
if (!result) {
goto finally;
}
result->frameContentSize = header.frameContentSize;
result->windowSize = header.windowSize;
result->dictID = header.dictID;
result->checksumFlag = header.checksumFlag ? 1 : 0;
finally:
PyBuffer_Release(&source);
return result;
}
static void FrameParameters_dealloc(PyObject* self) {
PyObject_Del(self);
}
static PyMemberDef FrameParameters_members[] = {
{ "content_size", T_ULONGLONG,
offsetof(FrameParametersObject, frameContentSize), READONLY,
"frame content size" },
{ "window_size", T_ULONGLONG,
offsetof(FrameParametersObject, windowSize), READONLY,
"window size" },
{ "dict_id", T_UINT,
offsetof(FrameParametersObject, dictID), READONLY,
"dictionary ID" },
{ "has_checksum", T_BOOL,
offsetof(FrameParametersObject, checksumFlag), READONLY,
"checksum flag" },
{ NULL }
};
PyTypeObject FrameParametersType = {
PyVarObject_HEAD_INIT(NULL, 0)
"FrameParameters", /* tp_name */
sizeof(FrameParametersObject), /* tp_basicsize */
0, /* tp_itemsize */
(destructor)FrameParameters_dealloc, /* tp_dealloc */
0, /* tp_print */
0, /* tp_getattr */
0, /* tp_setattr */
0, /* tp_compare */
0, /* tp_repr */
0, /* tp_as_number */
0, /* tp_as_sequence */
0, /* tp_as_mapping */
0, /* tp_hash */
0, /* tp_call */
0, /* tp_str */
0, /* tp_getattro */
0, /* tp_setattro */
0, /* tp_as_buffer */
Py_TPFLAGS_DEFAULT, /* tp_flags */
FrameParameters__doc__, /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
0, /* tp_methods */
FrameParameters_members, /* tp_members */
0, /* tp_getset */
0, /* tp_base */
0, /* tp_dict */
0, /* tp_descr_get */
0, /* tp_descr_set */
0, /* tp_dictoffset */
0, /* tp_init */
0, /* tp_alloc */
0, /* tp_new */
};
void frameparams_module_init(PyObject* mod) {
Py_TYPE(&FrameParametersType) = &PyType_Type;
if (PyType_Ready(&FrameParametersType) < 0) {
return;
}
Py_INCREF(&FrameParametersType);
PyModule_AddObject(mod, "FrameParameters", (PyObject*)&FrameParametersType);
}