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/*
* Copyright 2010-2021 The pygit2 contributors
*
* This file is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2,
* as published by the Free Software Foundation.
*
* In addition to the permissions in the GNU General Public License,
* the authors give you unlimited permission to link the compiled
* version of this file into combinations with other programs,
* and to distribute those combinations without any restriction
* coming from the use of this file. (The General Public License
* restrictions do apply in other respects; for example, they cover
* modification of the file, and distribution when not linked into
* a combined executable.)
*
* This file is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#define PY_SSIZE_T_CLEAN
#include <Python.h>
#include <string.h>
#include "error.h"
#include "utils.h"
#include "repository.h"
#include "object.h"
#include "oid.h"
#include "tree.h"
#include "diff.h"
extern PyTypeObject TreeType;
extern PyTypeObject DiffType;
extern PyTypeObject TreeIterType;
extern PyTypeObject IndexType;
PyObject *
treeentry_to_object(const git_tree_entry *entry, Repository *repo)
{
if (repo == NULL) {
PyErr_SetString(PyExc_ValueError, "expected repository");
return NULL;
}
return wrap_object(NULL, repo, entry);
}
Py_ssize_t
Tree_len(Tree *self)
{
if (Object__load((Object*)self) == NULL) { return -1; } // Lazy load
return (Py_ssize_t)git_tree_entrycount(self->tree);
}
int
Tree_contains(Tree *self, PyObject *py_name)
{
if (Object__load((Object*)self) == NULL) { return -1; } // Lazy load
char *name = pgit_encode_fsdefault(py_name);
if (name == NULL)
return -1;
git_tree_entry *entry;
int err = git_tree_entry_bypath(&entry, self->tree, name);
free(name);
if (err == GIT_ENOTFOUND) {
return 0;
} else if (err < 0) {
Error_set(err);
return -1;
}
git_tree_entry_free(entry);
return 1;
}
int
Tree_fix_index(const git_tree *tree, PyObject *py_index)
{
long index;
size_t len;
long slen;
index = PyLong_AsLong(py_index);
if (PyErr_Occurred())
return -1;
len = git_tree_entrycount(tree);
slen = (long)len;
if (index >= slen) {
PyErr_SetObject(PyExc_IndexError, py_index);
return -1;
}
else if (index < -slen) {
PyErr_SetObject(PyExc_IndexError, py_index);
return -1;
}
/* This function is called via mp_subscript, which doesn't do negative
* index rewriting, so we have to do it manually. */
if (index < 0)
index = len + index;
return (int)index;
}
PyObject *
Tree_iter(Tree *self)
{
TreeIter *iter;
if (Object__load((Object*)self) == NULL) { return NULL; } // Lazy load
iter = PyObject_New(TreeIter, &TreeIterType);
if (iter) {
Py_INCREF(self);
iter->owner = self;
iter->i = 0;
}
return (PyObject*)iter;
}
PyObject*
tree_getentry_by_index(const git_tree *tree, Repository *repo, PyObject *py_index)
{
int index;
const git_tree_entry *entry_src;
git_tree_entry *entry;
index = Tree_fix_index(tree, py_index);
if (PyErr_Occurred())
return NULL;
entry_src = git_tree_entry_byindex(tree, index);
if (!entry_src) {
PyErr_SetObject(PyExc_IndexError, py_index);
return NULL;
}
if (git_tree_entry_dup(&entry, entry_src) < 0) {
PyErr_SetNone(PyExc_MemoryError);
return NULL;
}
return treeentry_to_object(entry, repo);
}
PyObject*
tree_getentry_by_path(const git_tree *tree, Repository *repo, PyObject *py_path)
{
char *path = pgit_encode_fsdefault(py_path);
if (path == NULL) {
PyErr_SetString(PyExc_TypeError, "Value must be a path string");
return NULL;
}
git_tree_entry *entry;
int err = git_tree_entry_bypath(&entry, tree, path);
free(path);
if (err == GIT_ENOTFOUND) {
PyErr_SetObject(PyExc_KeyError, py_path);
return NULL;
}
if (err < 0)
return Error_set(err);
/* git_tree_entry_dup is already done in git_tree_entry_bypath */
return treeentry_to_object(entry, repo);
}
PyObject*
Tree_subscript(Tree *self, PyObject *value)
{
if (Object__load((Object*)self) == NULL) { return NULL; } // Lazy load
/* Case 1: integer */
if (PyLong_Check(value))
return tree_getentry_by_index(self->tree, self->repo, value);
/* Case 2: byte or text string */
return tree_getentry_by_path(self->tree, self->repo, value);
}
PyObject *
Tree_divide(Tree *self, PyObject *value)
{
if (Object__load((Object*)self) == NULL) { return NULL; } // Lazy load
return tree_getentry_by_path(self->tree, self->repo, value);
}
PyDoc_STRVAR(Tree_diff_to_workdir__doc__,
"diff_to_workdir(flags: int = GIT_DIFF_NORMAL, context_lines: int = 3, interhunk_lines: int = 0) -> Diff\n"
"\n"
"Show the changes between the :py:class:`~pygit2.Tree` and the workdir.\n"
"\n"
"Parameters:\n"
"\n"
"flag\n"
" A GIT_DIFF_* constant.\n"
"\n"
"context_lines\n"
" The number of unchanged lines that define the boundary of a hunk\n"
" (and to display before and after).\n"
"\n"
"interhunk_lines\n"
" The maximum number of unchanged lines between hunk boundaries before\n"
" the hunks will be merged into a one.\n");
PyObject *
Tree_diff_to_workdir(Tree *self, PyObject *args)
{
git_diff_options opts = GIT_DIFF_OPTIONS_INIT;
git_diff *diff;
int err;
if (!PyArg_ParseTuple(args, "|IHH", &opts.flags, &opts.context_lines,
&opts.interhunk_lines))
return NULL;
if (Object__load((Object*)self) == NULL) { return NULL; } // Lazy load
err = git_diff_tree_to_workdir(&diff, self->repo->repo, self->tree, &opts);
if (err < 0)
return Error_set(err);
return wrap_diff(diff, self->repo);
}
PyDoc_STRVAR(Tree_diff_to_index__doc__,
"diff_to_index(index: Index, flags: int = GIT_DIFF_NORMAL, context_lines: int = 3, interhunk_lines: int = 0) -> Diff\n"
"\n"
"Show the changes between the index and a given :py:class:`~pygit2.Tree`.\n"
"\n"
"Parameters:\n"
"\n"
"index : :py:class:`~pygit2.Index`\n"
" The index to diff.\n"
"\n"
"flag\n"
" A GIT_DIFF_* constant.\n"
"\n"
"context_lines\n"
" The number of unchanged lines that define the boundary of a hunk\n"
" (and to display before and after).\n"
"\n"
"interhunk_lines\n"
" The maximum number of unchanged lines between hunk boundaries before\n"
" the hunks will be merged into a one.\n");
PyObject *
Tree_diff_to_index(Tree *self, PyObject *args, PyObject *kwds)
{
git_diff_options opts = GIT_DIFF_OPTIONS_INIT;
git_diff *diff;
git_index *index;
char *buffer;
Py_ssize_t length;
PyObject *py_idx;
int err;
if (!PyArg_ParseTuple(args, "O|IHH", &py_idx, &opts.flags,
&opts.context_lines,
&opts.interhunk_lines))
return NULL;
/* Check whether the first argument is an index.
* FIXME Uses duck typing. This would be easy and correct if we had
* _pygit2.Index. */
PyObject *pygit2_index = PyObject_GetAttrString(py_idx, "_index");
if (!pygit2_index) {
PyErr_SetString(PyExc_TypeError, "argument must be an Index");
return NULL;
}
Py_DECREF(pygit2_index);
/* Get git_index from cffi's pointer */
PyObject *py_idx_ptr = PyObject_GetAttrString(py_idx, "_pointer");
if (!py_idx_ptr)
return NULL;
/* Here we need to do the opposite conversion from the _pointer getters */
if (PyBytes_AsStringAndSize(py_idx_ptr, &buffer, &length))
goto error;
if (length != sizeof(git_index *)) {
PyErr_SetString(PyExc_TypeError, "passed value is not a pointer");
goto error;
}
index = *((git_index **) buffer); /* the "buffer" contains the pointer */
/* Call git_diff_tree_to_index */
if (Object__load((Object*)self) == NULL) { return NULL; } // Lazy load
err = git_diff_tree_to_index(&diff, self->repo->repo, self->tree, index, &opts);
Py_DECREF(py_idx_ptr);
if (err < 0)
return Error_set(err);
return wrap_diff(diff, self->repo);
error:
Py_DECREF(py_idx_ptr);
return NULL;
}
PyDoc_STRVAR(Tree_diff_to_tree__doc__,
"diff_to_tree([tree: Tree, flags: int = GIT_DIFF_NORMAL, context_lines: int = 3, interhunk_lines: int = 0, swap: bool = False]) -> Diff\n"
"\n"
"Show the changes between two trees.\n"
"\n"
"Parameters:\n"
"\n"
"tree: :py:class:`~pygit2.Tree`\n"
" The tree to diff. If no tree is given the empty tree will be used\n"
" instead.\n"
"\n"
"flag\n"
" A GIT_DIFF_* constant.\n"
"\n"
"context_lines\n"
" The number of unchanged lines that define the boundary of a hunk\n"
" (and to display before and after).\n"
"\n"
"interhunk_lines\n"
" The maximum number of unchanged lines between hunk boundaries before\n"
" the hunks will be merged into a one.\n"
"\n"
"swap\n"
" Instead of diffing a to b. Diff b to a.\n");
PyObject *
Tree_diff_to_tree(Tree *self, PyObject *args, PyObject *kwds)
{
git_diff_options opts = GIT_DIFF_OPTIONS_INIT;
git_diff *diff;
git_tree *from, *to = NULL, *tmp;
int err, swap = 0;
char *keywords[] = {"obj", "flags", "context_lines", "interhunk_lines",
"swap", NULL};
Tree *other = NULL;
if (!PyArg_ParseTupleAndKeywords(args, kwds, "|O!IHHi", keywords,
&TreeType, &other, &opts.flags,
&opts.context_lines,
&opts.interhunk_lines, &swap))
return NULL;
if (Object__load((Object*)self) == NULL) { return NULL; } // Lazy load
from = self->tree;
if (other) {
if (Object__load((Object*)other) == NULL) { return NULL; } // Lazy load
to = other->tree;
}
if (swap > 0) {
tmp = from;
from = to;
to = tmp;
}
err = git_diff_tree_to_tree(&diff, self->repo->repo, from, to, &opts);
if (err < 0)
return Error_set(err);
return wrap_diff(diff, self->repo);
}
PySequenceMethods Tree_as_sequence = {
0, /* sq_length */
0, /* sq_concat */
0, /* sq_repeat */
0, /* sq_item */
0, /* sq_slice */
0, /* sq_ass_item */
0, /* sq_ass_slice */
(objobjproc)Tree_contains, /* sq_contains */
};
PyMappingMethods Tree_as_mapping = {
(lenfunc)Tree_len, /* mp_length */
(binaryfunc)Tree_subscript, /* mp_subscript */
0, /* mp_ass_subscript */
};
PyMethodDef Tree_methods[] = {
METHOD(Tree, diff_to_tree, METH_VARARGS | METH_KEYWORDS),
METHOD(Tree, diff_to_workdir, METH_VARARGS),
METHOD(Tree, diff_to_index, METH_VARARGS | METH_KEYWORDS),
{NULL}
};
/* Py2/3 compatible structure
* see https://py3c.readthedocs.io/en/latest/ext-types.html#pynumbermethods
*/
PyNumberMethods Tree_as_number = {
0, /* nb_add */
0, /* nb_subtract */
0, /* nb_multiply */
0, /* nb_remainder */
0, /* nb_divmod */
0, /* nb_power */
0, /* nb_negative */
0, /* nb_positive */
0, /* nb_absolute */
0, /* nb_bool (Py2: nb_nonzero) */
0, /* nb_invert */
0, /* nb_lshift */
0, /* nb_rshift */
0, /* nb_and */
0, /* nb_xor */
0, /* nb_or */
0, /* nb_int */
0, /* nb_reserved (Py2: nb_long) */
0, /* nb_float */
0, /* nb_inplace_add */
0, /* nb_inplace_subtract */
0, /* nb_inplace_multiply */
0, /* nb_inplace_remainder */
0, /* nb_inplace_power */
0, /* nb_inplace_lshift */
0, /* nb_inplace_rshift */
0, /* nb_inplace_and */
0, /* nb_inplace_xor */
0, /* nb_inplace_or */
0, /* nb_floor_divide */
(binaryfunc)Tree_divide, /* nb_true_divide */
0, /* nb_inplace_floor_divide */
0, /* nb_inplace_true_divide */
0, /* nb_index */
0, /* nb_matrix_multiply */
0, /* nb_inplace_matrix_multiply */
};
PyDoc_STRVAR(Tree__doc__, "Tree objects.");
PyTypeObject TreeType = {
PyVarObject_HEAD_INIT(NULL, 0)
"_pygit2.Tree", /* tp_name */
sizeof(Tree), /* tp_basicsize */
0, /* tp_itemsize */
0, /* tp_dealloc */
0, /* tp_print */
0, /* tp_getattr */
0, /* tp_setattr */
0, /* tp_compare */
(reprfunc)Object_repr, /* tp_repr */
&Tree_as_number, /* tp_as_number */
&Tree_as_sequence, /* tp_as_sequence */
&Tree_as_mapping, /* 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 | Py_TPFLAGS_BASETYPE, /* tp_flags */
Tree__doc__, /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
(getiterfunc)Tree_iter, /* tp_iter */
0, /* tp_iternext */
Tree_methods, /* tp_methods */
0, /* 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
TreeIter_dealloc(TreeIter *self)
{
Py_CLEAR(self->owner);
PyObject_Del(self);
}
PyObject*
TreeIter_iternext(TreeIter *self)
{
const git_tree_entry *entry_src;
git_tree_entry *entry;
entry_src = git_tree_entry_byindex(self->owner->tree, self->i);
if (!entry_src)
return NULL;
self->i += 1;
if (git_tree_entry_dup(&entry, entry_src) < 0) {
PyErr_SetNone(PyExc_MemoryError);
return NULL;
}
return treeentry_to_object(entry, self->owner->repo);
}
PyDoc_STRVAR(TreeIter__doc__, "Tree iterator.");
PyTypeObject TreeIterType = {
PyVarObject_HEAD_INIT(NULL, 0)
"_pygit2.TreeIter", /* tp_name */
sizeof(TreeIter), /* tp_basicsize */
0, /* tp_itemsize */
(destructor)TreeIter_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 */
TreeIter__doc__, /* tp_doc */
0, /* tp_traverse */
0, /* tp_clear */
0, /* tp_richcompare */
0, /* tp_weaklistoffset */
PyObject_SelfIter, /* tp_iter */
(iternextfunc)TreeIter_iternext, /* tp_iternext */
};