dirstate: Use the Rust implementation of DirstateItem when Rust is enabled
… instead of the C implementation, with C/Rust conversions at the FFI boundary
Differential Revision: https://phab.mercurial-scm.org/D11486
/*
parsers.c - efficient content parsing
Copyright 2008 Olivia Mackall <olivia@selenic.com> and others
This software may be used and distributed according to the terms of
the GNU General Public License, incorporated herein by reference.
*/
#define PY_SSIZE_T_CLEAN
#include <Python.h>
#include <ctype.h>
#include <stddef.h>
#include <string.h>
#include "bitmanipulation.h"
#include "charencode.h"
#include "util.h"
#ifdef IS_PY3K
/* The mapping of Python types is meant to be temporary to get Python
* 3 to compile. We should remove this once Python 3 support is fully
* supported and proper types are used in the extensions themselves. */
#define PyInt_Check PyLong_Check
#define PyInt_FromLong PyLong_FromLong
#define PyInt_FromSsize_t PyLong_FromSsize_t
#define PyInt_AsLong PyLong_AsLong
#endif
static const char *const versionerrortext = "Python minor version mismatch";
static const int dirstate_v1_from_p2 = -2;
static const int dirstate_v1_nonnormal = -1;
static const int ambiguous_time = -1;
static PyObject *dict_new_presized(PyObject *self, PyObject *args)
{
Py_ssize_t expected_size;
if (!PyArg_ParseTuple(args, "n:make_presized_dict", &expected_size)) {
return NULL;
}
return _dict_new_presized(expected_size);
}
static PyObject *dirstate_item_new(PyTypeObject *subtype, PyObject *args,
PyObject *kwds)
{
/* We do all the initialization here and not a tp_init function because
* dirstate_item is immutable. */
dirstateItemObject *t;
int wc_tracked;
int p1_tracked;
int p2_tracked;
int merged;
int clean_p1;
int clean_p2;
int possibly_dirty;
PyObject *parentfiledata;
static char *keywords_name[] = {
"wc_tracked", "p1_tracked", "p2_tracked",
"merged", "clean_p1", "clean_p2",
"possibly_dirty", "parentfiledata", NULL,
};
wc_tracked = 0;
p1_tracked = 0;
p2_tracked = 0;
merged = 0;
clean_p1 = 0;
clean_p2 = 0;
possibly_dirty = 0;
parentfiledata = Py_None;
if (!PyArg_ParseTupleAndKeywords(args, kwds, "iiiiiiiO", keywords_name,
&wc_tracked, &p1_tracked, &p2_tracked,
&merged, &clean_p1, &clean_p2,
&possibly_dirty, &parentfiledata
)) {
return NULL;
}
if (merged && (clean_p1 || clean_p2)) {
PyErr_SetString(PyExc_RuntimeError,
"`merged` argument incompatible with "
"`clean_p1`/`clean_p2`");
return NULL;
}
t = (dirstateItemObject *)subtype->tp_alloc(subtype, 1);
if (!t) {
return NULL;
}
t->flags = 0;
if (wc_tracked) {
t->flags |= dirstate_flag_wc_tracked;
}
if (p1_tracked) {
t->flags |= dirstate_flag_p1_tracked;
}
if (p2_tracked) {
t->flags |= dirstate_flag_p2_tracked;
}
if (possibly_dirty) {
t->flags |= dirstate_flag_possibly_dirty;
}
if (merged) {
t->flags |= dirstate_flag_merged;
}
if (clean_p1) {
t->flags |= dirstate_flag_clean_p1;
}
if (clean_p2) {
t->flags |= dirstate_flag_clean_p2;
}
t->mode = 0;
t->size = dirstate_v1_nonnormal;
t->mtime = ambiguous_time;
if (parentfiledata != Py_None) {
if (!PyTuple_CheckExact(parentfiledata)) {
PyErr_SetString(
PyExc_TypeError,
"parentfiledata should be a Tuple or None");
return NULL;
}
t->mode =
(int)PyLong_AsLong(PyTuple_GetItem(parentfiledata, 0));
t->size =
(int)PyLong_AsLong(PyTuple_GetItem(parentfiledata, 1));
t->mtime =
(int)PyLong_AsLong(PyTuple_GetItem(parentfiledata, 2));
}
return (PyObject *)t;
}
static void dirstate_item_dealloc(PyObject *o)
{
PyObject_Del(o);
}
static inline bool dirstate_item_c_tracked(dirstateItemObject *self)
{
return (self->flags & dirstate_flag_wc_tracked);
}
static inline bool dirstate_item_c_added(dirstateItemObject *self)
{
unsigned char mask =
(dirstate_flag_wc_tracked | dirstate_flag_p1_tracked |
dirstate_flag_p2_tracked);
unsigned char target = dirstate_flag_wc_tracked;
return (self->flags & mask) == target;
}
static inline bool dirstate_item_c_removed(dirstateItemObject *self)
{
if (self->flags & dirstate_flag_wc_tracked) {
return false;
}
return (self->flags &
(dirstate_flag_p1_tracked | dirstate_flag_p2_tracked));
}
static inline bool dirstate_item_c_merged(dirstateItemObject *self)
{
return ((self->flags & dirstate_flag_wc_tracked) &&
(self->flags & dirstate_flag_merged));
}
static inline bool dirstate_item_c_merged_removed(dirstateItemObject *self)
{
if (!dirstate_item_c_removed(self)) {
return false;
}
return (self->flags & dirstate_flag_merged);
}
static inline bool dirstate_item_c_from_p2(dirstateItemObject *self)
{
if (!dirstate_item_c_tracked(self)) {
return false;
}
return (self->flags & dirstate_flag_clean_p2);
}
static inline bool dirstate_item_c_from_p2_removed(dirstateItemObject *self)
{
if (!dirstate_item_c_removed(self)) {
return false;
}
return (self->flags & dirstate_flag_clean_p2);
}
static inline char dirstate_item_c_v1_state(dirstateItemObject *self)
{
if (dirstate_item_c_removed(self)) {
return 'r';
} else if (dirstate_item_c_merged(self)) {
return 'm';
} else if (dirstate_item_c_added(self)) {
return 'a';
} else {
return 'n';
}
}
static inline int dirstate_item_c_v1_mode(dirstateItemObject *self)
{
return self->mode;
}
static inline int dirstate_item_c_v1_size(dirstateItemObject *self)
{
if (dirstate_item_c_merged_removed(self)) {
return dirstate_v1_nonnormal;
} else if (dirstate_item_c_from_p2_removed(self)) {
return dirstate_v1_from_p2;
} else if (dirstate_item_c_removed(self)) {
return 0;
} else if (dirstate_item_c_merged(self)) {
return dirstate_v1_from_p2;
} else if (dirstate_item_c_added(self)) {
return dirstate_v1_nonnormal;
} else if (dirstate_item_c_from_p2(self)) {
return dirstate_v1_from_p2;
} else if (self->flags & dirstate_flag_possibly_dirty) {
return self->size; /* NON NORMAL ? */
} else {
return self->size;
}
}
static inline int dirstate_item_c_v1_mtime(dirstateItemObject *self)
{
if (dirstate_item_c_removed(self)) {
return 0;
} else if (self->flags & dirstate_flag_possibly_dirty) {
return ambiguous_time;
} else if (dirstate_item_c_merged(self)) {
return ambiguous_time;
} else if (dirstate_item_c_added(self)) {
return ambiguous_time;
} else if (dirstate_item_c_from_p2(self)) {
return ambiguous_time;
} else {
return self->mtime;
}
}
static PyObject *dirstate_item_v1_state(dirstateItemObject *self)
{
char state = dirstate_item_c_v1_state(self);
return PyBytes_FromStringAndSize(&state, 1);
};
static PyObject *dirstate_item_v1_mode(dirstateItemObject *self)
{
return PyInt_FromLong(dirstate_item_c_v1_mode(self));
};
static PyObject *dirstate_item_v1_size(dirstateItemObject *self)
{
return PyInt_FromLong(dirstate_item_c_v1_size(self));
};
static PyObject *dirstate_item_v1_mtime(dirstateItemObject *self)
{
return PyInt_FromLong(dirstate_item_c_v1_mtime(self));
};
static PyObject *dirstate_item_need_delay(dirstateItemObject *self,
PyObject *value)
{
long now;
if (!pylong_to_long(value, &now)) {
return NULL;
}
if (dirstate_item_c_v1_state(self) == 'n' &&
dirstate_item_c_v1_mtime(self) == now) {
Py_RETURN_TRUE;
} else {
Py_RETURN_FALSE;
}
};
/* This will never change since it's bound to V1
*/
static inline dirstateItemObject *
dirstate_item_from_v1_data(char state, int mode, int size, int mtime)
{
dirstateItemObject *t =
PyObject_New(dirstateItemObject, &dirstateItemType);
if (!t) {
return NULL;
}
if (state == 'm') {
t->flags =
(dirstate_flag_wc_tracked | dirstate_flag_p1_tracked |
dirstate_flag_p2_tracked | dirstate_flag_merged);
t->mode = 0;
t->size = dirstate_v1_from_p2;
t->mtime = ambiguous_time;
} else if (state == 'a') {
t->flags = dirstate_flag_wc_tracked;
t->mode = 0;
t->size = dirstate_v1_nonnormal;
t->mtime = ambiguous_time;
} else if (state == 'r') {
t->mode = 0;
t->size = 0;
t->mtime = 0;
if (size == dirstate_v1_nonnormal) {
t->flags =
(dirstate_flag_p1_tracked |
dirstate_flag_p2_tracked | dirstate_flag_merged);
} else if (size == dirstate_v1_from_p2) {
t->flags =
(dirstate_flag_p2_tracked | dirstate_flag_clean_p2);
} else {
t->flags = dirstate_flag_p1_tracked;
}
} else if (state == 'n') {
if (size == dirstate_v1_from_p2) {
t->flags =
(dirstate_flag_wc_tracked |
dirstate_flag_p2_tracked | dirstate_flag_clean_p2);
t->mode = 0;
t->size = dirstate_v1_from_p2;
t->mtime = ambiguous_time;
} else if (size == dirstate_v1_nonnormal) {
t->flags = (dirstate_flag_wc_tracked |
dirstate_flag_p1_tracked |
dirstate_flag_possibly_dirty);
t->mode = 0;
t->size = dirstate_v1_nonnormal;
t->mtime = ambiguous_time;
} else if (mtime == ambiguous_time) {
t->flags = (dirstate_flag_wc_tracked |
dirstate_flag_p1_tracked |
dirstate_flag_possibly_dirty);
t->mode = mode;
t->size = size;
t->mtime = 0;
} else {
t->flags = (dirstate_flag_wc_tracked |
dirstate_flag_p1_tracked);
t->mode = mode;
t->size = size;
t->mtime = mtime;
}
} else {
PyErr_Format(PyExc_RuntimeError,
"unknown state: `%c` (%d, %d, %d)", state, mode,
size, mtime, NULL);
Py_DECREF(t);
return NULL;
}
return t;
}
/* This will never change since it's bound to V1, unlike `dirstate_item_new` */
static PyObject *dirstate_item_from_v1_meth(PyTypeObject *subtype,
PyObject *args)
{
/* We do all the initialization here and not a tp_init function because
* dirstate_item is immutable. */
char state;
int size, mode, mtime;
if (!PyArg_ParseTuple(args, "ciii", &state, &mode, &size, &mtime)) {
return NULL;
}
return (PyObject *)dirstate_item_from_v1_data(state, mode, size, mtime);
};
/* constructor to help legacy API to build a new "added" item
Should eventually be removed */
static PyObject *dirstate_item_new_added(PyTypeObject *subtype)
{
dirstateItemObject *t;
t = (dirstateItemObject *)subtype->tp_alloc(subtype, 1);
if (!t) {
return NULL;
}
t->flags = dirstate_flag_wc_tracked;
t->mode = 0;
t->size = dirstate_v1_nonnormal;
t->mtime = ambiguous_time;
return (PyObject *)t;
};
/* constructor to help legacy API to build a new "merged" item
Should eventually be removed */
static PyObject *dirstate_item_new_merged(PyTypeObject *subtype)
{
dirstateItemObject *t;
t = (dirstateItemObject *)subtype->tp_alloc(subtype, 1);
if (!t) {
return NULL;
}
t->flags = (dirstate_flag_wc_tracked | dirstate_flag_p1_tracked |
dirstate_flag_p2_tracked | dirstate_flag_merged);
t->mode = 0;
t->size = dirstate_v1_from_p2;
t->mtime = ambiguous_time;
return (PyObject *)t;
};
/* constructor to help legacy API to build a new "from_p2" item
Should eventually be removed */
static PyObject *dirstate_item_new_from_p2(PyTypeObject *subtype)
{
/* We do all the initialization here and not a tp_init function because
* dirstate_item is immutable. */
dirstateItemObject *t;
t = (dirstateItemObject *)subtype->tp_alloc(subtype, 1);
if (!t) {
return NULL;
}
t->flags = (dirstate_flag_wc_tracked | dirstate_flag_p2_tracked |
dirstate_flag_clean_p2);
t->mode = 0;
t->size = dirstate_v1_from_p2;
t->mtime = ambiguous_time;
return (PyObject *)t;
};
/* constructor to help legacy API to build a new "possibly" item
Should eventually be removed */
static PyObject *dirstate_item_new_possibly_dirty(PyTypeObject *subtype)
{
/* We do all the initialization here and not a tp_init function because
* dirstate_item is immutable. */
dirstateItemObject *t;
t = (dirstateItemObject *)subtype->tp_alloc(subtype, 1);
if (!t) {
return NULL;
}
t->flags = (dirstate_flag_wc_tracked | dirstate_flag_p1_tracked |
dirstate_flag_possibly_dirty);
t->mode = 0;
t->size = dirstate_v1_nonnormal;
t->mtime = ambiguous_time;
return (PyObject *)t;
};
/* constructor to help legacy API to build a new "normal" item
Should eventually be removed */
static PyObject *dirstate_item_new_normal(PyTypeObject *subtype, PyObject *args)
{
/* We do all the initialization here and not a tp_init function because
* dirstate_item is immutable. */
dirstateItemObject *t;
int size, mode, mtime;
if (!PyArg_ParseTuple(args, "iii", &mode, &size, &mtime)) {
return NULL;
}
t = (dirstateItemObject *)subtype->tp_alloc(subtype, 1);
if (!t) {
return NULL;
}
t->flags = (dirstate_flag_wc_tracked | dirstate_flag_p1_tracked);
t->mode = mode;
t->size = size;
t->mtime = mtime;
return (PyObject *)t;
};
/* This means the next status call will have to actually check its content
to make sure it is correct. */
static PyObject *dirstate_item_set_possibly_dirty(dirstateItemObject *self)
{
self->flags |= dirstate_flag_possibly_dirty;
Py_RETURN_NONE;
}
/* See docstring of the python implementation for details */
static PyObject *dirstate_item_set_clean(dirstateItemObject *self,
PyObject *args)
{
int size, mode, mtime;
if (!PyArg_ParseTuple(args, "iii", &mode, &size, &mtime)) {
return NULL;
}
self->flags = dirstate_flag_wc_tracked | dirstate_flag_p1_tracked;
self->mode = mode;
self->size = size;
self->mtime = mtime;
Py_RETURN_NONE;
}
static PyObject *dirstate_item_set_tracked(dirstateItemObject *self)
{
self->flags |= dirstate_flag_wc_tracked;
self->flags |= dirstate_flag_possibly_dirty;
/* size = None on the python size turn into size = NON_NORMAL when
* accessed. So the next line is currently required, but a some future
* clean up would be welcome. */
self->size = dirstate_v1_nonnormal;
Py_RETURN_NONE;
}
static PyObject *dirstate_item_set_untracked(dirstateItemObject *self)
{
self->flags &= ~dirstate_flag_wc_tracked;
self->mode = 0;
self->mtime = 0;
self->size = 0;
Py_RETURN_NONE;
}
static PyMethodDef dirstate_item_methods[] = {
{"v1_state", (PyCFunction)dirstate_item_v1_state, METH_NOARGS,
"return a \"state\" suitable for v1 serialization"},
{"v1_mode", (PyCFunction)dirstate_item_v1_mode, METH_NOARGS,
"return a \"mode\" suitable for v1 serialization"},
{"v1_size", (PyCFunction)dirstate_item_v1_size, METH_NOARGS,
"return a \"size\" suitable for v1 serialization"},
{"v1_mtime", (PyCFunction)dirstate_item_v1_mtime, METH_NOARGS,
"return a \"mtime\" suitable for v1 serialization"},
{"need_delay", (PyCFunction)dirstate_item_need_delay, METH_O,
"True if the stored mtime would be ambiguous with the current time"},
{"from_v1_data", (PyCFunction)dirstate_item_from_v1_meth,
METH_VARARGS | METH_CLASS, "build a new DirstateItem object from V1 data"},
{"new_added", (PyCFunction)dirstate_item_new_added,
METH_NOARGS | METH_CLASS,
"constructor to help legacy API to build a new \"added\" item"},
{"new_merged", (PyCFunction)dirstate_item_new_merged,
METH_NOARGS | METH_CLASS,
"constructor to help legacy API to build a new \"merged\" item"},
{"new_from_p2", (PyCFunction)dirstate_item_new_from_p2,
METH_NOARGS | METH_CLASS,
"constructor to help legacy API to build a new \"from_p2\" item"},
{"new_possibly_dirty", (PyCFunction)dirstate_item_new_possibly_dirty,
METH_NOARGS | METH_CLASS,
"constructor to help legacy API to build a new \"possibly_dirty\" item"},
{"new_normal", (PyCFunction)dirstate_item_new_normal,
METH_VARARGS | METH_CLASS,
"constructor to help legacy API to build a new \"normal\" item"},
{"set_possibly_dirty", (PyCFunction)dirstate_item_set_possibly_dirty,
METH_NOARGS, "mark a file as \"possibly dirty\""},
{"set_clean", (PyCFunction)dirstate_item_set_clean, METH_VARARGS,
"mark a file as \"clean\""},
{"set_tracked", (PyCFunction)dirstate_item_set_tracked, METH_NOARGS,
"mark a file as \"tracked\""},
{"set_untracked", (PyCFunction)dirstate_item_set_untracked, METH_NOARGS,
"mark a file as \"untracked\""},
{NULL} /* Sentinel */
};
static PyObject *dirstate_item_get_mode(dirstateItemObject *self)
{
return PyInt_FromLong(dirstate_item_c_v1_mode(self));
};
static PyObject *dirstate_item_get_size(dirstateItemObject *self)
{
return PyInt_FromLong(dirstate_item_c_v1_size(self));
};
static PyObject *dirstate_item_get_mtime(dirstateItemObject *self)
{
return PyInt_FromLong(dirstate_item_c_v1_mtime(self));
};
static PyObject *dirstate_item_get_state(dirstateItemObject *self)
{
char state = dirstate_item_c_v1_state(self);
return PyBytes_FromStringAndSize(&state, 1);
};
static PyObject *dirstate_item_get_tracked(dirstateItemObject *self)
{
if (dirstate_item_c_tracked(self)) {
Py_RETURN_TRUE;
} else {
Py_RETURN_FALSE;
}
};
static PyObject *dirstate_item_get_added(dirstateItemObject *self)
{
if (dirstate_item_c_added(self)) {
Py_RETURN_TRUE;
} else {
Py_RETURN_FALSE;
}
};
static PyObject *dirstate_item_get_merged(dirstateItemObject *self)
{
if (dirstate_item_c_merged(self)) {
Py_RETURN_TRUE;
} else {
Py_RETURN_FALSE;
}
};
static PyObject *dirstate_item_get_merged_removed(dirstateItemObject *self)
{
if (dirstate_item_c_merged_removed(self)) {
Py_RETURN_TRUE;
} else {
Py_RETURN_FALSE;
}
};
static PyObject *dirstate_item_get_from_p2(dirstateItemObject *self)
{
if (dirstate_item_c_from_p2(self)) {
Py_RETURN_TRUE;
} else {
Py_RETURN_FALSE;
}
};
static PyObject *dirstate_item_get_from_p2_removed(dirstateItemObject *self)
{
if (dirstate_item_c_from_p2_removed(self)) {
Py_RETURN_TRUE;
} else {
Py_RETURN_FALSE;
}
};
static PyObject *dirstate_item_get_removed(dirstateItemObject *self)
{
if (dirstate_item_c_removed(self)) {
Py_RETURN_TRUE;
} else {
Py_RETURN_FALSE;
}
};
static PyObject *dm_nonnormal(dirstateItemObject *self)
{
if ((dirstate_item_c_v1_state(self) != 'n') ||
(dirstate_item_c_v1_mtime(self) == ambiguous_time)) {
Py_RETURN_TRUE;
} else {
Py_RETURN_FALSE;
}
};
static PyObject *dm_otherparent(dirstateItemObject *self)
{
if (dirstate_item_c_v1_mtime(self) == dirstate_v1_from_p2) {
Py_RETURN_TRUE;
} else {
Py_RETURN_FALSE;
}
};
static PyGetSetDef dirstate_item_getset[] = {
{"mode", (getter)dirstate_item_get_mode, NULL, "mode", NULL},
{"size", (getter)dirstate_item_get_size, NULL, "size", NULL},
{"mtime", (getter)dirstate_item_get_mtime, NULL, "mtime", NULL},
{"state", (getter)dirstate_item_get_state, NULL, "state", NULL},
{"tracked", (getter)dirstate_item_get_tracked, NULL, "tracked", NULL},
{"added", (getter)dirstate_item_get_added, NULL, "added", NULL},
{"merged_removed", (getter)dirstate_item_get_merged_removed, NULL,
"merged_removed", NULL},
{"merged", (getter)dirstate_item_get_merged, NULL, "merged", NULL},
{"from_p2_removed", (getter)dirstate_item_get_from_p2_removed, NULL,
"from_p2_removed", NULL},
{"from_p2", (getter)dirstate_item_get_from_p2, NULL, "from_p2", NULL},
{"removed", (getter)dirstate_item_get_removed, NULL, "removed", NULL},
{"dm_nonnormal", (getter)dm_nonnormal, NULL, "dm_nonnormal", NULL},
{"dm_otherparent", (getter)dm_otherparent, NULL, "dm_otherparent", NULL},
{NULL} /* Sentinel */
};
PyTypeObject dirstateItemType = {
PyVarObject_HEAD_INIT(NULL, 0) /* header */
"dirstate_tuple", /* tp_name */
sizeof(dirstateItemObject), /* tp_basicsize */
0, /* tp_itemsize */
(destructor)dirstate_item_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 */
"dirstate tuple", /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
0, /* tp_iter */
0, /* tp_iternext */
dirstate_item_methods, /* tp_methods */
0, /* tp_members */
dirstate_item_getset, /* 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 */
dirstate_item_new, /* tp_new */
};
static PyObject *parse_dirstate(PyObject *self, PyObject *args)
{
PyObject *dmap, *cmap, *parents = NULL, *ret = NULL;
PyObject *fname = NULL, *cname = NULL, *entry = NULL;
char state, *cur, *str, *cpos;
int mode, size, mtime;
unsigned int flen, pos = 40;
Py_ssize_t len = 40;
Py_ssize_t readlen;
if (!PyArg_ParseTuple(
args, PY23("O!O!s#:parse_dirstate", "O!O!y#:parse_dirstate"),
&PyDict_Type, &dmap, &PyDict_Type, &cmap, &str, &readlen)) {
goto quit;
}
len = readlen;
/* read parents */
if (len < 40) {
PyErr_SetString(PyExc_ValueError,
"too little data for parents");
goto quit;
}
parents = Py_BuildValue(PY23("s#s#", "y#y#"), str, (Py_ssize_t)20,
str + 20, (Py_ssize_t)20);
if (!parents) {
goto quit;
}
/* read filenames */
while (pos >= 40 && pos < len) {
if (pos + 17 > len) {
PyErr_SetString(PyExc_ValueError,
"overflow in dirstate");
goto quit;
}
cur = str + pos;
/* unpack header */
state = *cur;
mode = getbe32(cur + 1);
size = getbe32(cur + 5);
mtime = getbe32(cur + 9);
flen = getbe32(cur + 13);
pos += 17;
cur += 17;
if (flen > len - pos) {
PyErr_SetString(PyExc_ValueError,
"overflow in dirstate");
goto quit;
}
entry = (PyObject *)dirstate_item_from_v1_data(state, mode,
size, mtime);
if (!entry)
goto quit;
cpos = memchr(cur, 0, flen);
if (cpos) {
fname = PyBytes_FromStringAndSize(cur, cpos - cur);
cname = PyBytes_FromStringAndSize(
cpos + 1, flen - (cpos - cur) - 1);
if (!fname || !cname ||
PyDict_SetItem(cmap, fname, cname) == -1 ||
PyDict_SetItem(dmap, fname, entry) == -1) {
goto quit;
}
Py_DECREF(cname);
} else {
fname = PyBytes_FromStringAndSize(cur, flen);
if (!fname ||
PyDict_SetItem(dmap, fname, entry) == -1) {
goto quit;
}
}
Py_DECREF(fname);
Py_DECREF(entry);
fname = cname = entry = NULL;
pos += flen;
}
ret = parents;
Py_INCREF(ret);
quit:
Py_XDECREF(fname);
Py_XDECREF(cname);
Py_XDECREF(entry);
Py_XDECREF(parents);
return ret;
}
/*
* Build a set of non-normal and other parent entries from the dirstate dmap
*/
static PyObject *nonnormalotherparententries(PyObject *self, PyObject *args)
{
PyObject *dmap, *fname, *v;
PyObject *nonnset = NULL, *otherpset = NULL, *result = NULL;
Py_ssize_t pos;
if (!PyArg_ParseTuple(args, "O!:nonnormalentries", &PyDict_Type,
&dmap)) {
goto bail;
}
nonnset = PySet_New(NULL);
if (nonnset == NULL) {
goto bail;
}
otherpset = PySet_New(NULL);
if (otherpset == NULL) {
goto bail;
}
pos = 0;
while (PyDict_Next(dmap, &pos, &fname, &v)) {
dirstateItemObject *t;
if (!dirstate_tuple_check(v)) {
PyErr_SetString(PyExc_TypeError,
"expected a dirstate tuple");
goto bail;
}
t = (dirstateItemObject *)v;
if (dirstate_item_c_from_p2(t)) {
if (PySet_Add(otherpset, fname) == -1) {
goto bail;
}
}
if (!(t->flags & dirstate_flag_wc_tracked) ||
!(t->flags &
(dirstate_flag_p1_tracked | dirstate_flag_p2_tracked)) ||
(t->flags &
(dirstate_flag_possibly_dirty | dirstate_flag_merged))) {
if (PySet_Add(nonnset, fname) == -1) {
goto bail;
}
}
}
result = Py_BuildValue("(OO)", nonnset, otherpset);
if (result == NULL) {
goto bail;
}
Py_DECREF(nonnset);
Py_DECREF(otherpset);
return result;
bail:
Py_XDECREF(nonnset);
Py_XDECREF(otherpset);
Py_XDECREF(result);
return NULL;
}
/*
* Efficiently pack a dirstate object into its on-disk format.
*/
static PyObject *pack_dirstate(PyObject *self, PyObject *args)
{
PyObject *packobj = NULL;
PyObject *map, *copymap, *pl, *mtime_unset = NULL;
Py_ssize_t nbytes, pos, l;
PyObject *k, *v = NULL, *pn;
char *p, *s;
int now;
if (!PyArg_ParseTuple(args, "O!O!O!i:pack_dirstate", &PyDict_Type, &map,
&PyDict_Type, ©map, &PyTuple_Type, &pl,
&now)) {
return NULL;
}
if (PyTuple_Size(pl) != 2) {
PyErr_SetString(PyExc_TypeError, "expected 2-element tuple");
return NULL;
}
/* Figure out how much we need to allocate. */
for (nbytes = 40, pos = 0; PyDict_Next(map, &pos, &k, &v);) {
PyObject *c;
if (!PyBytes_Check(k)) {
PyErr_SetString(PyExc_TypeError, "expected string key");
goto bail;
}
nbytes += PyBytes_GET_SIZE(k) + 17;
c = PyDict_GetItem(copymap, k);
if (c) {
if (!PyBytes_Check(c)) {
PyErr_SetString(PyExc_TypeError,
"expected string key");
goto bail;
}
nbytes += PyBytes_GET_SIZE(c) + 1;
}
}
packobj = PyBytes_FromStringAndSize(NULL, nbytes);
if (packobj == NULL) {
goto bail;
}
p = PyBytes_AS_STRING(packobj);
pn = PyTuple_GET_ITEM(pl, 0);
if (PyBytes_AsStringAndSize(pn, &s, &l) == -1 || l != 20) {
PyErr_SetString(PyExc_TypeError, "expected a 20-byte hash");
goto bail;
}
memcpy(p, s, l);
p += 20;
pn = PyTuple_GET_ITEM(pl, 1);
if (PyBytes_AsStringAndSize(pn, &s, &l) == -1 || l != 20) {
PyErr_SetString(PyExc_TypeError, "expected a 20-byte hash");
goto bail;
}
memcpy(p, s, l);
p += 20;
for (pos = 0; PyDict_Next(map, &pos, &k, &v);) {
dirstateItemObject *tuple;
char state;
int mode, size, mtime;
Py_ssize_t len, l;
PyObject *o;
char *t;
if (!dirstate_tuple_check(v)) {
PyErr_SetString(PyExc_TypeError,
"expected a dirstate tuple");
goto bail;
}
tuple = (dirstateItemObject *)v;
state = dirstate_item_c_v1_state(tuple);
mode = dirstate_item_c_v1_mode(tuple);
size = dirstate_item_c_v1_size(tuple);
mtime = dirstate_item_c_v1_mtime(tuple);
if (state == 'n' && mtime == now) {
/* See pure/parsers.py:pack_dirstate for why we do
* this. */
mtime = -1;
mtime_unset = (PyObject *)dirstate_item_from_v1_data(
state, mode, size, mtime);
if (!mtime_unset) {
goto bail;
}
if (PyDict_SetItem(map, k, mtime_unset) == -1) {
goto bail;
}
Py_DECREF(mtime_unset);
mtime_unset = NULL;
}
*p++ = state;
putbe32((uint32_t)mode, p);
putbe32((uint32_t)size, p + 4);
putbe32((uint32_t)mtime, p + 8);
t = p + 12;
p += 16;
len = PyBytes_GET_SIZE(k);
memcpy(p, PyBytes_AS_STRING(k), len);
p += len;
o = PyDict_GetItem(copymap, k);
if (o) {
*p++ = '\0';
l = PyBytes_GET_SIZE(o);
memcpy(p, PyBytes_AS_STRING(o), l);
p += l;
len += l + 1;
}
putbe32((uint32_t)len, t);
}
pos = p - PyBytes_AS_STRING(packobj);
if (pos != nbytes) {
PyErr_Format(PyExc_SystemError, "bad dirstate size: %ld != %ld",
(long)pos, (long)nbytes);
goto bail;
}
return packobj;
bail:
Py_XDECREF(mtime_unset);
Py_XDECREF(packobj);
Py_XDECREF(v);
return NULL;
}
#define BUMPED_FIX 1
#define USING_SHA_256 2
#define FM1_HEADER_SIZE (4 + 8 + 2 + 2 + 1 + 1 + 1)
static PyObject *readshas(const char *source, unsigned char num,
Py_ssize_t hashwidth)
{
int i;
PyObject *list = PyTuple_New(num);
if (list == NULL) {
return NULL;
}
for (i = 0; i < num; i++) {
PyObject *hash = PyBytes_FromStringAndSize(source, hashwidth);
if (hash == NULL) {
Py_DECREF(list);
return NULL;
}
PyTuple_SET_ITEM(list, i, hash);
source += hashwidth;
}
return list;
}
static PyObject *fm1readmarker(const char *databegin, const char *dataend,
uint32_t *msize)
{
const char *data = databegin;
const char *meta;
double mtime;
int16_t tz;
uint16_t flags;
unsigned char nsuccs, nparents, nmetadata;
Py_ssize_t hashwidth = 20;
PyObject *prec = NULL, *parents = NULL, *succs = NULL;
PyObject *metadata = NULL, *ret = NULL;
int i;
if (data + FM1_HEADER_SIZE > dataend) {
goto overflow;
}
*msize = getbe32(data);
data += 4;
mtime = getbefloat64(data);
data += 8;
tz = getbeint16(data);
data += 2;
flags = getbeuint16(data);
data += 2;
if (flags & USING_SHA_256) {
hashwidth = 32;
}
nsuccs = (unsigned char)(*data++);
nparents = (unsigned char)(*data++);
nmetadata = (unsigned char)(*data++);
if (databegin + *msize > dataend) {
goto overflow;
}
dataend = databegin + *msize; /* narrow down to marker size */
if (data + hashwidth > dataend) {
goto overflow;
}
prec = PyBytes_FromStringAndSize(data, hashwidth);
data += hashwidth;
if (prec == NULL) {
goto bail;
}
if (data + nsuccs * hashwidth > dataend) {
goto overflow;
}
succs = readshas(data, nsuccs, hashwidth);
if (succs == NULL) {
goto bail;
}
data += nsuccs * hashwidth;
if (nparents == 1 || nparents == 2) {
if (data + nparents * hashwidth > dataend) {
goto overflow;
}
parents = readshas(data, nparents, hashwidth);
if (parents == NULL) {
goto bail;
}
data += nparents * hashwidth;
} else {
parents = Py_None;
Py_INCREF(parents);
}
if (data + 2 * nmetadata > dataend) {
goto overflow;
}
meta = data + (2 * nmetadata);
metadata = PyTuple_New(nmetadata);
if (metadata == NULL) {
goto bail;
}
for (i = 0; i < nmetadata; i++) {
PyObject *tmp, *left = NULL, *right = NULL;
Py_ssize_t leftsize = (unsigned char)(*data++);
Py_ssize_t rightsize = (unsigned char)(*data++);
if (meta + leftsize + rightsize > dataend) {
goto overflow;
}
left = PyBytes_FromStringAndSize(meta, leftsize);
meta += leftsize;
right = PyBytes_FromStringAndSize(meta, rightsize);
meta += rightsize;
tmp = PyTuple_New(2);
if (!left || !right || !tmp) {
Py_XDECREF(left);
Py_XDECREF(right);
Py_XDECREF(tmp);
goto bail;
}
PyTuple_SET_ITEM(tmp, 0, left);
PyTuple_SET_ITEM(tmp, 1, right);
PyTuple_SET_ITEM(metadata, i, tmp);
}
ret = Py_BuildValue("(OOHO(di)O)", prec, succs, flags, metadata, mtime,
(int)tz * 60, parents);
goto bail; /* return successfully */
overflow:
PyErr_SetString(PyExc_ValueError, "overflow in obsstore");
bail:
Py_XDECREF(prec);
Py_XDECREF(succs);
Py_XDECREF(metadata);
Py_XDECREF(parents);
return ret;
}
static PyObject *fm1readmarkers(PyObject *self, PyObject *args)
{
const char *data, *dataend;
Py_ssize_t datalen, offset, stop;
PyObject *markers = NULL;
if (!PyArg_ParseTuple(args, PY23("s#nn", "y#nn"), &data, &datalen,
&offset, &stop)) {
return NULL;
}
if (offset < 0) {
PyErr_SetString(PyExc_ValueError,
"invalid negative offset in fm1readmarkers");
return NULL;
}
if (stop > datalen) {
PyErr_SetString(
PyExc_ValueError,
"stop longer than data length in fm1readmarkers");
return NULL;
}
dataend = data + datalen;
data += offset;
markers = PyList_New(0);
if (!markers) {
return NULL;
}
while (offset < stop) {
uint32_t msize;
int error;
PyObject *record = fm1readmarker(data, dataend, &msize);
if (!record) {
goto bail;
}
error = PyList_Append(markers, record);
Py_DECREF(record);
if (error) {
goto bail;
}
data += msize;
offset += msize;
}
return markers;
bail:
Py_DECREF(markers);
return NULL;
}
static char parsers_doc[] = "Efficient content parsing.";
PyObject *encodedir(PyObject *self, PyObject *args);
PyObject *pathencode(PyObject *self, PyObject *args);
PyObject *lowerencode(PyObject *self, PyObject *args);
PyObject *parse_index2(PyObject *self, PyObject *args, PyObject *kwargs);
static PyMethodDef methods[] = {
{"pack_dirstate", pack_dirstate, METH_VARARGS, "pack a dirstate\n"},
{"nonnormalotherparententries", nonnormalotherparententries, METH_VARARGS,
"create a set containing non-normal and other parent entries of given "
"dirstate\n"},
{"parse_dirstate", parse_dirstate, METH_VARARGS, "parse a dirstate\n"},
{"parse_index2", (PyCFunction)parse_index2, METH_VARARGS | METH_KEYWORDS,
"parse a revlog index\n"},
{"isasciistr", isasciistr, METH_VARARGS, "check if an ASCII string\n"},
{"asciilower", asciilower, METH_VARARGS, "lowercase an ASCII string\n"},
{"asciiupper", asciiupper, METH_VARARGS, "uppercase an ASCII string\n"},
{"dict_new_presized", dict_new_presized, METH_VARARGS,
"construct a dict with an expected size\n"},
{"make_file_foldmap", make_file_foldmap, METH_VARARGS,
"make file foldmap\n"},
{"jsonescapeu8fast", jsonescapeu8fast, METH_VARARGS,
"escape a UTF-8 byte string to JSON (fast path)\n"},
{"encodedir", encodedir, METH_VARARGS, "encodedir a path\n"},
{"pathencode", pathencode, METH_VARARGS, "fncache-encode a path\n"},
{"lowerencode", lowerencode, METH_VARARGS, "lower-encode a path\n"},
{"fm1readmarkers", fm1readmarkers, METH_VARARGS,
"parse v1 obsolete markers\n"},
{NULL, NULL}};
void dirs_module_init(PyObject *mod);
void manifest_module_init(PyObject *mod);
void revlog_module_init(PyObject *mod);
static const int version = 20;
static void module_init(PyObject *mod)
{
PyModule_AddIntConstant(mod, "version", version);
/* This module constant has two purposes. First, it lets us unit test
* the ImportError raised without hard-coding any error text. This
* means we can change the text in the future without breaking tests,
* even across changesets without a recompile. Second, its presence
* can be used to determine whether the version-checking logic is
* present, which also helps in testing across changesets without a
* recompile. Note that this means the pure-Python version of parsers
* should not have this module constant. */
PyModule_AddStringConstant(mod, "versionerrortext", versionerrortext);
dirs_module_init(mod);
manifest_module_init(mod);
revlog_module_init(mod);
if (PyType_Ready(&dirstateItemType) < 0) {
return;
}
Py_INCREF(&dirstateItemType);
PyModule_AddObject(mod, "DirstateItem", (PyObject *)&dirstateItemType);
}
static int check_python_version(void)
{
PyObject *sys = PyImport_ImportModule("sys"), *ver;
long hexversion;
if (!sys) {
return -1;
}
ver = PyObject_GetAttrString(sys, "hexversion");
Py_DECREF(sys);
if (!ver) {
return -1;
}
hexversion = PyInt_AsLong(ver);
Py_DECREF(ver);
/* sys.hexversion is a 32-bit number by default, so the -1 case
* should only occur in unusual circumstances (e.g. if sys.hexversion
* is manually set to an invalid value). */
if ((hexversion == -1) || (hexversion >> 16 != PY_VERSION_HEX >> 16)) {
PyErr_Format(PyExc_ImportError,
"%s: The Mercurial extension "
"modules were compiled with Python " PY_VERSION
", but "
"Mercurial is currently using Python with "
"sys.hexversion=%ld: "
"Python %s\n at: %s",
versionerrortext, hexversion, Py_GetVersion(),
Py_GetProgramFullPath());
return -1;
}
return 0;
}
#ifdef IS_PY3K
static struct PyModuleDef parsers_module = {PyModuleDef_HEAD_INIT, "parsers",
parsers_doc, -1, methods};
PyMODINIT_FUNC PyInit_parsers(void)
{
PyObject *mod;
if (check_python_version() == -1)
return NULL;
mod = PyModule_Create(&parsers_module);
module_init(mod);
return mod;
}
#else
PyMODINIT_FUNC initparsers(void)
{
PyObject *mod;
if (check_python_version() == -1) {
return;
}
mod = Py_InitModule3("parsers", methods, parsers_doc);
module_init(mod);
}
#endif