mirror of https://github.com/python/cpython
1161 lines
22 KiB
C
1161 lines
22 KiB
C
/***********************************************************
|
|
Copyright 1991, 1992, 1993 by Stichting Mathematisch Centrum,
|
|
Amsterdam, The Netherlands.
|
|
|
|
All Rights Reserved
|
|
|
|
Permission to use, copy, modify, and distribute this software and its
|
|
documentation for any purpose and without fee is hereby granted,
|
|
provided that the above copyright notice appear in all copies and that
|
|
both that copyright notice and this permission notice appear in
|
|
supporting documentation, and that the names of Stichting Mathematisch
|
|
Centrum or CWI not be used in advertising or publicity pertaining to
|
|
distribution of the software without specific, written prior permission.
|
|
|
|
STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
|
|
THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
|
FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH CENTRUM BE LIABLE
|
|
FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
|
|
OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
|
|
******************************************************************/
|
|
|
|
/* Array object implementation */
|
|
|
|
/* An array is a uniform list -- all items have the same type.
|
|
The item type is restricted to simple C types like int or float */
|
|
|
|
#include "allobjects.h"
|
|
#include "modsupport.h"
|
|
#include "ceval.h"
|
|
|
|
#ifdef i860
|
|
/* Cray APP doesn't have memmove */
|
|
#define NEED_MEMMOVE
|
|
extern char *memcpy();
|
|
#endif
|
|
|
|
#ifdef sun
|
|
/* SunOS doesn't have memmove */
|
|
#define NEED_MEMMOVE
|
|
extern char *memcpy();
|
|
#endif
|
|
|
|
#ifdef NEED_MEMMOVE
|
|
extern char *memmove();
|
|
#endif
|
|
|
|
struct arrayobject; /* Forward */
|
|
|
|
struct arraydescr {
|
|
int typecode;
|
|
int itemsize;
|
|
object * (*getitem) FPROTO((struct arrayobject *, int));
|
|
int (*setitem) FPROTO((struct arrayobject *, int, object *));
|
|
};
|
|
|
|
typedef struct arrayobject {
|
|
OB_VARHEAD
|
|
char *ob_item;
|
|
struct arraydescr *ob_descr;
|
|
} arrayobject;
|
|
|
|
extern typeobject Arraytype;
|
|
|
|
#define is_arrayobject(op) ((op)->ob_type == &Arraytype)
|
|
|
|
extern object *newarrayobject PROTO((int, struct arraydescr *));
|
|
extern int getarraysize PROTO((object *));
|
|
extern object *getarrayitem PROTO((object *, int));
|
|
extern int setarrayitem PROTO((object *, int, object *));
|
|
extern int insarrayitem PROTO((object *, int, object *));
|
|
extern int addarrayitem PROTO((object *, object *));
|
|
|
|
static object *
|
|
c_getitem(ap, i)
|
|
arrayobject *ap;
|
|
int i;
|
|
{
|
|
return newsizedstringobject(&((char *)ap->ob_item)[i], 1);
|
|
}
|
|
|
|
static int
|
|
c_setitem(ap, i, v)
|
|
arrayobject *ap;
|
|
int i;
|
|
object *v;
|
|
{
|
|
char x;
|
|
if (!getargs(v, "c;array item must be char", &x))
|
|
return -1;
|
|
if (i >= 0)
|
|
((char *)ap->ob_item)[i] = x;
|
|
return 0;
|
|
}
|
|
|
|
static object *
|
|
b_getitem(ap, i)
|
|
arrayobject *ap;
|
|
int i;
|
|
{
|
|
long x = ((char *)ap->ob_item)[i];
|
|
if (x >= 128)
|
|
x -= 256;
|
|
return newintobject(x);
|
|
}
|
|
|
|
static int
|
|
b_setitem(ap, i, v)
|
|
arrayobject *ap;
|
|
int i;
|
|
object *v;
|
|
{
|
|
char x;
|
|
if (!getargs(v, "b;array item must be integer", &x))
|
|
return -1;
|
|
if (i >= 0)
|
|
((char *)ap->ob_item)[i] = x;
|
|
return 0;
|
|
}
|
|
|
|
static object *
|
|
h_getitem(ap, i)
|
|
arrayobject *ap;
|
|
int i;
|
|
{
|
|
return newintobject((long) ((short *)ap->ob_item)[i]);
|
|
}
|
|
|
|
static int
|
|
h_setitem(ap, i, v)
|
|
arrayobject *ap;
|
|
int i;
|
|
object *v;
|
|
{
|
|
short x;
|
|
if (!getargs(v, "h;array item must be integer", &x))
|
|
return -1;
|
|
if (i >= 0)
|
|
((short *)ap->ob_item)[i] = x;
|
|
return 0;
|
|
}
|
|
|
|
static object *
|
|
l_getitem(ap, i)
|
|
arrayobject *ap;
|
|
int i;
|
|
{
|
|
return newintobject(((long *)ap->ob_item)[i]);
|
|
}
|
|
|
|
static int
|
|
l_setitem(ap, i, v)
|
|
arrayobject *ap;
|
|
int i;
|
|
object *v;
|
|
{
|
|
long x;
|
|
if (!getargs(v, "l;array item must be integer", &x))
|
|
return -1;
|
|
if (i >= 0)
|
|
((long *)ap->ob_item)[i] = x;
|
|
return 0;
|
|
}
|
|
|
|
static object *
|
|
f_getitem(ap, i)
|
|
arrayobject *ap;
|
|
int i;
|
|
{
|
|
return newfloatobject((double) ((float *)ap->ob_item)[i]);
|
|
}
|
|
|
|
static int
|
|
f_setitem(ap, i, v)
|
|
arrayobject *ap;
|
|
int i;
|
|
object *v;
|
|
{
|
|
float x;
|
|
if (!getargs(v, "f;array item must be float", &x))
|
|
return -1;
|
|
if (i >= 0)
|
|
((float *)ap->ob_item)[i] = x;
|
|
return 0;
|
|
}
|
|
|
|
static object *
|
|
d_getitem(ap, i)
|
|
arrayobject *ap;
|
|
int i;
|
|
{
|
|
return newfloatobject(((double *)ap->ob_item)[i]);
|
|
}
|
|
|
|
static int
|
|
d_setitem(ap, i, v)
|
|
arrayobject *ap;
|
|
int i;
|
|
object *v;
|
|
{
|
|
double x;
|
|
if (!getargs(v, "d;array item must be float", &x))
|
|
return -1;
|
|
if (i >= 0)
|
|
((double *)ap->ob_item)[i] = x;
|
|
return 0;
|
|
}
|
|
|
|
/* Description of types */
|
|
static struct arraydescr descriptors[] = {
|
|
{'c', sizeof(char), c_getitem, c_setitem},
|
|
{'b', sizeof(char), b_getitem, b_setitem},
|
|
{'h', sizeof(short), h_getitem, h_setitem},
|
|
{'l', sizeof(long), l_getitem, l_setitem},
|
|
{'f', sizeof(float), f_getitem, f_setitem},
|
|
{'d', sizeof(double), d_getitem, d_setitem},
|
|
{'\0', 0, 0, 0} /* Sentinel */
|
|
};
|
|
|
|
|
|
object *
|
|
newarrayobject(size, descr)
|
|
int size;
|
|
struct arraydescr *descr;
|
|
{
|
|
int i;
|
|
arrayobject *op;
|
|
MALLARG nbytes;
|
|
int itemsize;
|
|
if (size < 0) {
|
|
err_badcall();
|
|
return NULL;
|
|
}
|
|
nbytes = size * descr->itemsize;
|
|
/* Check for overflow */
|
|
if (nbytes / descr->itemsize != size) {
|
|
return err_nomem();
|
|
}
|
|
op = (arrayobject *) malloc(sizeof(arrayobject));
|
|
if (op == NULL) {
|
|
return err_nomem();
|
|
}
|
|
if (size <= 0) {
|
|
op->ob_item = NULL;
|
|
}
|
|
else {
|
|
op->ob_item = malloc(nbytes);
|
|
if (op->ob_item == NULL) {
|
|
free((ANY *)op);
|
|
return err_nomem();
|
|
}
|
|
}
|
|
op->ob_type = &Arraytype;
|
|
op->ob_size = size;
|
|
op->ob_descr = descr;
|
|
NEWREF(op);
|
|
return (object *) op;
|
|
}
|
|
|
|
int
|
|
getarraysize(op)
|
|
object *op;
|
|
{
|
|
if (!is_arrayobject(op)) {
|
|
err_badcall();
|
|
return -1;
|
|
}
|
|
return ((arrayobject *)op) -> ob_size;
|
|
}
|
|
|
|
object *
|
|
getarrayitem(op, i)
|
|
object *op;
|
|
int i;
|
|
{
|
|
register arrayobject *ap;
|
|
if (!is_arrayobject(op)) {
|
|
err_badcall();
|
|
return NULL;
|
|
}
|
|
ap = (arrayobject *)op;
|
|
if (i < 0 || i >= ap->ob_size) {
|
|
err_setstr(IndexError, "array index out of range");
|
|
return NULL;
|
|
}
|
|
return (*ap->ob_descr->getitem)(ap, i);
|
|
}
|
|
|
|
static int
|
|
ins1(self, where, v)
|
|
arrayobject *self;
|
|
int where;
|
|
object *v;
|
|
{
|
|
int i;
|
|
char *items;
|
|
if (v == NULL) {
|
|
err_badcall();
|
|
return -1;
|
|
}
|
|
if ((*self->ob_descr->setitem)(self, -1, v) < 0)
|
|
return -1;
|
|
items = self->ob_item;
|
|
RESIZE(items, char, (self->ob_size+1) * self->ob_descr->itemsize);
|
|
if (items == NULL) {
|
|
err_nomem();
|
|
return -1;
|
|
}
|
|
if (where < 0)
|
|
where = 0;
|
|
if (where > self->ob_size)
|
|
where = self->ob_size;
|
|
memmove(items + (where+1)*self->ob_descr->itemsize,
|
|
items + where*self->ob_descr->itemsize,
|
|
(self->ob_size-where)*self->ob_descr->itemsize);
|
|
self->ob_item = items;
|
|
self->ob_size++;
|
|
return (*self->ob_descr->setitem)(self, where, v);
|
|
}
|
|
|
|
int
|
|
insarrayitem(op, where, newitem)
|
|
object *op;
|
|
int where;
|
|
object *newitem;
|
|
{
|
|
if (!is_arrayobject(op)) {
|
|
err_badcall();
|
|
return -1;
|
|
}
|
|
return ins1((arrayobject *)op, where, newitem);
|
|
}
|
|
|
|
int
|
|
addarrayitem(op, newitem)
|
|
object *op;
|
|
object *newitem;
|
|
{
|
|
if (!is_arrayobject(op)) {
|
|
err_badcall();
|
|
return -1;
|
|
}
|
|
return ins1((arrayobject *)op,
|
|
(int) ((arrayobject *)op)->ob_size, newitem);
|
|
}
|
|
|
|
/* Methods */
|
|
|
|
static void
|
|
array_dealloc(op)
|
|
arrayobject *op;
|
|
{
|
|
int i;
|
|
if (op->ob_item != NULL)
|
|
free((ANY *)op->ob_item);
|
|
free((ANY *)op);
|
|
}
|
|
|
|
static int
|
|
array_compare(v, w)
|
|
arrayobject *v, *w;
|
|
{
|
|
int len = (v->ob_size < w->ob_size) ? v->ob_size : w->ob_size;
|
|
int i;
|
|
for (i = 0; i < len; i++) {
|
|
object *ai, *bi;
|
|
int cmp;
|
|
ai = getarrayitem((object *)v, i);
|
|
bi = getarrayitem((object *)w, i);
|
|
if (ai && bi)
|
|
cmp = cmpobject(ai, bi);
|
|
else
|
|
cmp = -1;
|
|
XDECREF(ai);
|
|
XDECREF(bi);
|
|
if (cmp != 0) {
|
|
err_clear(); /* XXX Can't report errors here */
|
|
return cmp;
|
|
}
|
|
}
|
|
return v->ob_size - w->ob_size;
|
|
}
|
|
|
|
static int
|
|
array_length(a)
|
|
arrayobject *a;
|
|
{
|
|
return a->ob_size;
|
|
}
|
|
|
|
static object *
|
|
array_item(a, i)
|
|
arrayobject *a;
|
|
int i;
|
|
{
|
|
if (i < 0 || i >= a->ob_size) {
|
|
err_setstr(IndexError, "array index out of range");
|
|
return NULL;
|
|
}
|
|
return getarrayitem((object *)a, i);
|
|
}
|
|
|
|
static object *
|
|
array_slice(a, ilow, ihigh)
|
|
arrayobject *a;
|
|
int ilow, ihigh;
|
|
{
|
|
arrayobject *np;
|
|
int i;
|
|
if (ilow < 0)
|
|
ilow = 0;
|
|
else if (ilow > a->ob_size)
|
|
ilow = a->ob_size;
|
|
if (ihigh < 0)
|
|
ihigh = 0;
|
|
if (ihigh < ilow)
|
|
ihigh = ilow;
|
|
else if (ihigh > a->ob_size)
|
|
ihigh = a->ob_size;
|
|
np = (arrayobject *) newarrayobject(ihigh - ilow, a->ob_descr);
|
|
if (np == NULL)
|
|
return NULL;
|
|
memcpy(np->ob_item, a->ob_item + ilow * a->ob_descr->itemsize,
|
|
(ihigh-ilow) * a->ob_descr->itemsize);
|
|
return (object *)np;
|
|
}
|
|
|
|
static object *
|
|
array_concat(a, bb)
|
|
arrayobject *a;
|
|
object *bb;
|
|
{
|
|
int size;
|
|
int i;
|
|
arrayobject *np;
|
|
if (!is_arrayobject(bb)) {
|
|
err_badarg();
|
|
return NULL;
|
|
}
|
|
#define b ((arrayobject *)bb)
|
|
if (a->ob_descr != b->ob_descr) {
|
|
err_badarg();
|
|
return NULL;
|
|
}
|
|
size = a->ob_size + b->ob_size;
|
|
np = (arrayobject *) newarrayobject(size, a->ob_descr);
|
|
if (np == NULL) {
|
|
return NULL;
|
|
}
|
|
memcpy(np->ob_item, a->ob_item, a->ob_size*a->ob_descr->itemsize);
|
|
memcpy(np->ob_item + a->ob_size*a->ob_descr->itemsize,
|
|
a->ob_item, a->ob_size*a->ob_descr->itemsize);
|
|
return (object *)np;
|
|
#undef b
|
|
}
|
|
|
|
static object *
|
|
array_repeat(a, n)
|
|
arrayobject *a;
|
|
int n;
|
|
{
|
|
int i, j;
|
|
int size;
|
|
arrayobject *np;
|
|
char *p;
|
|
int nbytes;
|
|
if (n < 0)
|
|
n = 0;
|
|
size = a->ob_size * n;
|
|
np = (arrayobject *) newarrayobject(size, a->ob_descr);
|
|
if (np == NULL)
|
|
return NULL;
|
|
p = np->ob_item;
|
|
nbytes = a->ob_size * a->ob_descr->itemsize;
|
|
for (i = 0; i < n; i++) {
|
|
memcpy(p, a->ob_item, nbytes);
|
|
p += nbytes;
|
|
}
|
|
return (object *) np;
|
|
}
|
|
|
|
static int
|
|
array_ass_slice(a, ilow, ihigh, v)
|
|
arrayobject *a;
|
|
int ilow, ihigh;
|
|
object *v;
|
|
{
|
|
char *item;
|
|
int n; /* Size of replacement array */
|
|
int d; /* Change in size */
|
|
int k; /* Loop index */
|
|
#define b ((arrayobject *)v)
|
|
if (v == NULL)
|
|
n = 0;
|
|
else if (is_arrayobject(v)) {
|
|
n = b->ob_size;
|
|
if (a == b) {
|
|
/* Special case "a[i:j] = a" -- copy b first */
|
|
int ret;
|
|
v = array_slice(b, 0, n);
|
|
ret = array_ass_slice(a, ilow, ihigh, v);
|
|
DECREF(v);
|
|
return ret;
|
|
}
|
|
if (b->ob_descr != a->ob_descr) {
|
|
err_badarg();
|
|
return -1;
|
|
}
|
|
}
|
|
else {
|
|
err_badarg();
|
|
return -1;
|
|
}
|
|
if (ilow < 0)
|
|
ilow = 0;
|
|
else if (ilow > a->ob_size)
|
|
ilow = a->ob_size;
|
|
if (ihigh < 0)
|
|
ihigh = 0;
|
|
if (ihigh < ilow)
|
|
ihigh = ilow;
|
|
else if (ihigh > a->ob_size)
|
|
ihigh = a->ob_size;
|
|
item = a->ob_item;
|
|
d = n - (ihigh-ilow);
|
|
if (d < 0) { /* Delete -d items */
|
|
memmove(item + (ihigh+d)*a->ob_descr->itemsize,
|
|
item + ihigh*a->ob_descr->itemsize,
|
|
(a->ob_size-ihigh)*a->ob_descr->itemsize);
|
|
a->ob_size += d;
|
|
RESIZE(item, char, a->ob_size*a->ob_descr->itemsize);
|
|
/* Can't fail */
|
|
a->ob_item = item;
|
|
}
|
|
else if (d > 0) { /* Insert d items */
|
|
RESIZE(item, char, (a->ob_size + d)*a->ob_descr->itemsize);
|
|
if (item == NULL) {
|
|
err_nomem();
|
|
return -1;
|
|
}
|
|
memmove(item + (ihigh+d)*a->ob_descr->itemsize,
|
|
item + ihigh*a->ob_descr->itemsize,
|
|
(a->ob_size-ihigh)*a->ob_descr->itemsize);
|
|
a->ob_item = item;
|
|
a->ob_size += d;
|
|
}
|
|
if (n > 0)
|
|
memcpy(item + ilow*a->ob_descr->itemsize, b->ob_item,
|
|
n*b->ob_descr->itemsize);
|
|
return 0;
|
|
#undef b
|
|
}
|
|
|
|
static int
|
|
array_ass_item(a, i, v)
|
|
arrayobject *a;
|
|
int i;
|
|
object *v;
|
|
{
|
|
if (i < 0 || i >= a->ob_size) {
|
|
err_setstr(IndexError, "array assignment index out of range");
|
|
return -1;
|
|
}
|
|
if (v == NULL)
|
|
return array_ass_slice(a, i, i+1, v);
|
|
return (*a->ob_descr->setitem)(a, i, v);
|
|
}
|
|
|
|
static int
|
|
setarrayitem(a, i, v)
|
|
object *a;
|
|
int i;
|
|
object *v;
|
|
{
|
|
if (!is_arrayobject(a)) {
|
|
err_badcall();
|
|
return -1;
|
|
}
|
|
return array_ass_item((arrayobject *)a, i, v);
|
|
}
|
|
|
|
static object *
|
|
ins(self, where, v)
|
|
arrayobject *self;
|
|
int where;
|
|
object *v;
|
|
{
|
|
if (ins1(self, where, v) != 0)
|
|
return NULL;
|
|
INCREF(None);
|
|
return None;
|
|
}
|
|
|
|
static object *
|
|
array_insert(self, args)
|
|
arrayobject *self;
|
|
object *args;
|
|
{
|
|
int i;
|
|
object *v;
|
|
if (!getargs(args, "(iO)", &i, &v))
|
|
return NULL;
|
|
return ins(self, i, v);
|
|
}
|
|
|
|
static object *
|
|
array_append(self, args)
|
|
arrayobject *self;
|
|
object *args;
|
|
{
|
|
object *v;
|
|
if (!getargs(args, "O", &v))
|
|
return NULL;
|
|
return ins(self, (int) self->ob_size, v);
|
|
}
|
|
|
|
static object *
|
|
array_byteswap(self, args)
|
|
arrayobject *self;
|
|
object *args;
|
|
{
|
|
char *p;
|
|
int i;
|
|
switch (self->ob_descr->itemsize) {
|
|
case 1:
|
|
break;
|
|
case 2:
|
|
for (p = self->ob_item, i = self->ob_size; --i >= 0; p += 2) {
|
|
char p0 = p[0];
|
|
p[0] = p[1];
|
|
p[1] = p0;
|
|
}
|
|
break;
|
|
case 4:
|
|
for (p = self->ob_item, i = self->ob_size; --i >= 0; p += 4) {
|
|
char p0 = p[0];
|
|
char p1 = p[1];
|
|
p[0] = p[3];
|
|
p[1] = p[2];
|
|
p[2] = p1;
|
|
p[3] = p0;
|
|
}
|
|
break;
|
|
default:
|
|
err_setstr(RuntimeError,
|
|
"don't know how to byteswap this array type");
|
|
return NULL;
|
|
}
|
|
INCREF(None);
|
|
return None;
|
|
}
|
|
|
|
#if 0
|
|
static object *
|
|
array_reverse(self, args)
|
|
arrayobject *self;
|
|
object *args;
|
|
{
|
|
register object **p, **q;
|
|
register object *tmp;
|
|
|
|
if (args != NULL) {
|
|
err_badarg();
|
|
return NULL;
|
|
}
|
|
|
|
if (self->ob_size > 1) {
|
|
for (p = self->ob_item, q = self->ob_item + self->ob_size - 1;
|
|
p < q; p++, q--) {
|
|
tmp = *p;
|
|
*p = *q;
|
|
*q = tmp;
|
|
}
|
|
}
|
|
|
|
INCREF(None);
|
|
return None;
|
|
}
|
|
#endif
|
|
|
|
#if 0
|
|
static object *
|
|
array_index(self, args)
|
|
arrayobject *self;
|
|
object *args;
|
|
{
|
|
int i;
|
|
|
|
if (args == NULL) {
|
|
err_badarg();
|
|
return NULL;
|
|
}
|
|
for (i = 0; i < self->ob_size; i++) {
|
|
if (cmpobject(self->ob_item[i], args) == 0)
|
|
return newintobject((long)i);
|
|
}
|
|
err_setstr(ValueError, "array.index(x): x not in array");
|
|
return NULL;
|
|
}
|
|
#endif
|
|
|
|
#if 0
|
|
static object *
|
|
array_count(self, args)
|
|
arrayobject *self;
|
|
object *args;
|
|
{
|
|
int count = 0;
|
|
int i;
|
|
|
|
if (args == NULL) {
|
|
err_badarg();
|
|
return NULL;
|
|
}
|
|
for (i = 0; i < self->ob_size; i++) {
|
|
if (cmpobject(self->ob_item[i], args) == 0)
|
|
count++;
|
|
}
|
|
return newintobject((long)count);
|
|
}
|
|
#endif
|
|
|
|
#if 0
|
|
static object *
|
|
array_remove(self, args)
|
|
arrayobject *self;
|
|
object *args;
|
|
{
|
|
int i;
|
|
|
|
if (args == NULL) {
|
|
err_badarg();
|
|
return NULL;
|
|
}
|
|
for (i = 0; i < self->ob_size; i++) {
|
|
if (cmpobject(self->ob_item[i], args) == 0) {
|
|
if (array_ass_slice(self, i, i+1, (object *)NULL) != 0)
|
|
return NULL;
|
|
INCREF(None);
|
|
return None;
|
|
}
|
|
|
|
}
|
|
err_setstr(ValueError, "array.remove(x): x not in array");
|
|
return NULL;
|
|
}
|
|
#endif
|
|
|
|
static object *
|
|
array_read(self, args)
|
|
arrayobject *self;
|
|
object *args;
|
|
{
|
|
object *f;
|
|
int n;
|
|
FILE *fp;
|
|
if (!getargs(args, "(Oi)", &f, &n))
|
|
return NULL;
|
|
fp = getfilefile(f);
|
|
if (fp == NULL) {
|
|
err_setstr(TypeError, "arg1 must be open file");
|
|
return NULL;
|
|
}
|
|
if (n > 0) {
|
|
char *item = self->ob_item;
|
|
int itemsize = self->ob_descr->itemsize;
|
|
int nread;
|
|
RESIZE(item, char, (self->ob_size + n) * itemsize);
|
|
if (item == NULL) {
|
|
err_nomem();
|
|
return NULL;
|
|
}
|
|
self->ob_item = item;
|
|
self->ob_size += n;
|
|
nread = fread(item + (self->ob_size - n) * itemsize,
|
|
itemsize, n, fp);
|
|
if (nread < n) {
|
|
self->ob_size -= (n - nread);
|
|
RESIZE(item, char, self->ob_size*itemsize);
|
|
self->ob_item = item;
|
|
err_setstr(EOFError, "not enough items in file");
|
|
return NULL;
|
|
}
|
|
}
|
|
INCREF(None);
|
|
return None;
|
|
}
|
|
|
|
static object *
|
|
array_write(self, args)
|
|
arrayobject *self;
|
|
object *args;
|
|
{
|
|
object *f;
|
|
FILE *fp;
|
|
if (!getargs(args, "O", &f))
|
|
return NULL;
|
|
fp = getfilefile(f);
|
|
if (fp == NULL) {
|
|
err_setstr(TypeError, "arg must be open file");
|
|
return NULL;
|
|
}
|
|
if (self->ob_size > 0) {
|
|
if (fwrite(self->ob_item, self->ob_descr->itemsize,
|
|
self->ob_size, fp) != self->ob_size) {
|
|
err_errno(IOError);
|
|
clearerr(fp);
|
|
return NULL;
|
|
}
|
|
}
|
|
INCREF(None);
|
|
return None;
|
|
}
|
|
|
|
static object *
|
|
array_fromlist(self, args)
|
|
arrayobject *self;
|
|
object *args;
|
|
{
|
|
int n;
|
|
object *list;
|
|
int itemsize = self->ob_descr->itemsize;
|
|
if (!getargs(args, "O", &list))
|
|
return NULL;
|
|
if (!is_listobject(list)) {
|
|
err_setstr(TypeError, "arg must be list");
|
|
return NULL;
|
|
}
|
|
n = getlistsize(list);
|
|
if (n > 0) {
|
|
char *item = self->ob_item;
|
|
int i;
|
|
RESIZE(item, char, (self->ob_size + n) * itemsize);
|
|
if (item == NULL) {
|
|
err_nomem();
|
|
return NULL;
|
|
}
|
|
self->ob_item = item;
|
|
self->ob_size += n;
|
|
for (i = 0; i < n; i++) {
|
|
object *v = getlistitem(list, i);
|
|
if ((*self->ob_descr->setitem)(self,
|
|
self->ob_size - n + i, v) != 0) {
|
|
self->ob_size -= n;
|
|
RESIZE(item, char, self->ob_size * itemsize);
|
|
self->ob_item = item;
|
|
return NULL;
|
|
}
|
|
}
|
|
}
|
|
INCREF(None);
|
|
return None;
|
|
}
|
|
|
|
static object *
|
|
array_tolist(self, args)
|
|
arrayobject *self;
|
|
object *args;
|
|
{
|
|
object *list = newlistobject(self->ob_size);
|
|
int i;
|
|
if (list == NULL)
|
|
return NULL;
|
|
for (i = 0; i < self->ob_size; i++) {
|
|
object *v = getarrayitem((object *)self, i);
|
|
if (v == NULL) {
|
|
DECREF(list);
|
|
return NULL;
|
|
}
|
|
setlistitem(list, i, v);
|
|
}
|
|
return list;
|
|
}
|
|
|
|
static object *
|
|
array_fromstring(self, args)
|
|
arrayobject *self;
|
|
object *args;
|
|
{
|
|
char *str;
|
|
int n;
|
|
int itemsize = self->ob_descr->itemsize;
|
|
if (!getargs(args, "s#", &str, &n))
|
|
return NULL;
|
|
if (n % itemsize != 0) {
|
|
err_setstr(ValueError,
|
|
"string length not a multiple of item size");
|
|
return NULL;
|
|
}
|
|
n = n / itemsize;
|
|
if (n > 0) {
|
|
char *item = self->ob_item;
|
|
RESIZE(item, char, (self->ob_size + n) * itemsize);
|
|
if (item == NULL) {
|
|
err_nomem();
|
|
return NULL;
|
|
}
|
|
self->ob_item = item;
|
|
self->ob_size += n;
|
|
memcpy(item + (self->ob_size - n) * itemsize, str, itemsize*n);
|
|
}
|
|
INCREF(None);
|
|
return None;
|
|
}
|
|
|
|
static object *
|
|
array_tostring(self, args)
|
|
arrayobject *self;
|
|
object *args;
|
|
{
|
|
if (!getargs(args, ""))
|
|
return NULL;
|
|
return newsizedstringobject(self->ob_item,
|
|
self->ob_size * self->ob_descr->itemsize);
|
|
}
|
|
|
|
static struct methodlist array_methods[] = {
|
|
{"append", array_append},
|
|
{"byteswap", array_byteswap},
|
|
/* {"count", array_count},*/
|
|
/* {"index", array_index},*/
|
|
{"insert", array_insert},
|
|
/* {"sort", array_sort},*/
|
|
/* {"remove", array_remove},*/
|
|
/* {"reverse", array_reverse},*/
|
|
{"read", array_read},
|
|
{"write", array_write},
|
|
{"fromlist", array_fromlist},
|
|
{"tolist", array_tolist},
|
|
{"fromstring", array_fromstring},
|
|
{"tostring", array_tostring},
|
|
{NULL, NULL} /* sentinel */
|
|
};
|
|
|
|
static object *
|
|
array_getattr(a, name)
|
|
arrayobject *a;
|
|
char *name;
|
|
{
|
|
if (strcmp(name, "typecode") == 0) {
|
|
char tc = a->ob_descr->typecode;
|
|
return newsizedstringobject(&tc, 1);
|
|
}
|
|
if (strcmp(name, "itemsize") == 0) {
|
|
return newintobject((long)a->ob_descr->itemsize);
|
|
}
|
|
return findmethod(array_methods, (object *)a, name);
|
|
}
|
|
|
|
static int
|
|
array_print(a, fp, flags)
|
|
arrayobject *a;
|
|
FILE *fp;
|
|
int flags;
|
|
{
|
|
int ok = 0;
|
|
int i, len;
|
|
object *v;
|
|
len = a->ob_size;
|
|
if (len == 0) {
|
|
fprintf(fp, "array('%c')", a->ob_descr->typecode);
|
|
return ok;
|
|
}
|
|
if (a->ob_descr->typecode == 'c') {
|
|
fprintf(fp, "array('c', ");
|
|
v = array_tostring(a, (object *)NULL);
|
|
ok = printobject(v, fp, flags);
|
|
XDECREF(v);
|
|
fprintf(fp, ")");
|
|
return ok;
|
|
}
|
|
fprintf(fp, "array('%c', [", a->ob_descr->typecode);
|
|
for (i = 0; i < len && ok == 0; i++) {
|
|
if (i > 0)
|
|
fprintf(fp, ", ");
|
|
v = (a->ob_descr->getitem)(a, i);
|
|
ok = printobject(v, fp, flags);
|
|
XDECREF(v);
|
|
}
|
|
fprintf(fp, "])");
|
|
return ok;
|
|
}
|
|
|
|
static object *
|
|
array_repr(a)
|
|
arrayobject *a;
|
|
{
|
|
char buf[256];
|
|
object *s, *t, *comma, *v;
|
|
int i, len;
|
|
len = a->ob_size;
|
|
if (len == 0) {
|
|
sprintf(buf, "array('%c')", a->ob_descr->typecode);
|
|
return newstringobject(buf);
|
|
}
|
|
if (a->ob_descr->typecode == 'c') {
|
|
sprintf(buf, "array('c', ");
|
|
s = newstringobject(buf);
|
|
v = array_tostring(a, (object *)NULL);
|
|
t = reprobject(v);
|
|
XDECREF(v);
|
|
joinstring(&s, t);
|
|
XDECREF(t);
|
|
t = newstringobject(")");
|
|
joinstring(&s, t);
|
|
XDECREF(t);
|
|
if (err_occurred()) {
|
|
XDECREF(s);
|
|
s = NULL;
|
|
}
|
|
return s;
|
|
}
|
|
sprintf(buf, "array('%c', [", a->ob_descr->typecode);
|
|
s = newstringobject(buf);
|
|
comma = newstringobject(", ");
|
|
for (i = 0; i < len && !err_occurred(); i++) {
|
|
v = (a->ob_descr->getitem)(a, i);
|
|
t = reprobject(v);
|
|
XDECREF(v);
|
|
if (i > 0)
|
|
joinstring(&s, comma);
|
|
joinstring(&s, t);
|
|
XDECREF(t);
|
|
}
|
|
XDECREF(comma);
|
|
t = newstringobject("])");
|
|
joinstring(&s, t);
|
|
XDECREF(t);
|
|
if (err_occurred()) {
|
|
XDECREF(s);
|
|
s = NULL;
|
|
}
|
|
return s;
|
|
}
|
|
|
|
static sequence_methods array_as_sequence = {
|
|
array_length, /*sq_length*/
|
|
array_concat, /*sq_concat*/
|
|
array_repeat, /*sq_repeat*/
|
|
array_item, /*sq_item*/
|
|
array_slice, /*sq_slice*/
|
|
array_ass_item, /*sq_ass_item*/
|
|
array_ass_slice, /*sq_ass_slice*/
|
|
};
|
|
|
|
typeobject Arraytype = {
|
|
OB_HEAD_INIT(&Typetype)
|
|
0,
|
|
"array",
|
|
sizeof(arrayobject),
|
|
0,
|
|
array_dealloc, /*tp_dealloc*/
|
|
array_print, /*tp_print*/
|
|
array_getattr, /*tp_getattr*/
|
|
0, /*tp_setattr*/
|
|
array_compare, /*tp_compare*/
|
|
array_repr, /*tp_repr*/
|
|
0, /*tp_as_number*/
|
|
&array_as_sequence, /*tp_as_sequence*/
|
|
0, /*tp_as_mapping*/
|
|
};
|
|
|
|
|
|
static object *
|
|
a_array(self, args)
|
|
object *self;
|
|
object *args;
|
|
{
|
|
char c;
|
|
object *initial = NULL;
|
|
struct arraydescr *descr;
|
|
if (!getargs(args, "c", &c)) {
|
|
err_clear();
|
|
if (!getargs(args, "(cO)", &c, &initial))
|
|
return NULL;
|
|
if (!is_listobject(initial) && !is_stringobject(initial)) {
|
|
err_setstr(TypeError,
|
|
"array initializer must be list or string");
|
|
return NULL;
|
|
}
|
|
}
|
|
for (descr = descriptors; descr->typecode != '\0'; descr++) {
|
|
if (descr->typecode == c) {
|
|
object *a;
|
|
int len;
|
|
if (initial == NULL || !is_listobject(initial))
|
|
len = 0;
|
|
else
|
|
len = getlistsize(initial);
|
|
a = newarrayobject(len, descr);
|
|
if (a == NULL)
|
|
return NULL;
|
|
if (len > 0) {
|
|
int i;
|
|
for (i = 0; i < len; i++) {
|
|
object *v = getlistitem(initial, i);
|
|
if (setarrayitem(a, i, v) != 0) {
|
|
DECREF(a);
|
|
return NULL;
|
|
}
|
|
}
|
|
}
|
|
if (initial != NULL && is_stringobject(initial)) {
|
|
object *v =
|
|
array_fromstring((arrayobject *)a, initial);
|
|
if (v == NULL) {
|
|
DECREF(a);
|
|
return NULL;
|
|
}
|
|
DECREF(v);
|
|
}
|
|
return a;
|
|
}
|
|
}
|
|
err_setstr(ValueError, "bad typecode (must be c, b, h, l, f or d)");
|
|
return NULL;
|
|
}
|
|
|
|
static struct methodlist a_methods[] = {
|
|
{"array", a_array},
|
|
{NULL, NULL} /* sentinel */
|
|
};
|
|
|
|
void
|
|
initarray()
|
|
{
|
|
initmodule("array", a_methods);
|
|
}
|
|
|
|
|
|
#ifdef NEED_MEMMOVE
|
|
|
|
/* A perhaps slow but I hope correct implementation of memmove */
|
|
|
|
char *memmove(dst, src, n)
|
|
char *dst;
|
|
char *src;
|
|
int n;
|
|
{
|
|
char *realdst = dst;
|
|
if (n <= 0)
|
|
return dst;
|
|
if (src >= dst+n || dst >= src+n)
|
|
return memcpy(dst, src, n);
|
|
if (src > dst) {
|
|
while (--n >= 0)
|
|
*dst++ = *src++;
|
|
}
|
|
else if (src < dst) {
|
|
src += n;
|
|
dst += n;
|
|
while (--n >= 0)
|
|
*--dst = *--src;
|
|
}
|
|
return realdst;
|
|
}
|
|
|
|
#endif
|