3619 lines
83 KiB
C
3619 lines
83 KiB
C
|
||
/* String object implementation */
|
||
|
||
#include "Python.h"
|
||
|
||
#include <ctype.h>
|
||
|
||
#ifdef COUNT_ALLOCS
|
||
int null_strings, one_strings;
|
||
#endif
|
||
|
||
#if !defined(HAVE_LIMITS_H) && !defined(UCHAR_MAX)
|
||
#define UCHAR_MAX 255
|
||
#endif
|
||
|
||
static PyStringObject *characters[UCHAR_MAX + 1];
|
||
#ifndef DONT_SHARE_SHORT_STRINGS
|
||
static PyStringObject *nullstring;
|
||
#endif
|
||
|
||
/*
|
||
Newsizedstringobject() and newstringobject() try in certain cases
|
||
to share string objects. When the size of the string is zero,
|
||
these routines always return a pointer to the same string object;
|
||
when the size is one, they return a pointer to an already existing
|
||
object if the contents of the string is known. For
|
||
newstringobject() this is always the case, for
|
||
newsizedstringobject() this is the case when the first argument in
|
||
not NULL.
|
||
A common practice to allocate a string and then fill it in or
|
||
change it must be done carefully. It is only allowed to change the
|
||
contents of the string if the obect was gotten from
|
||
newsizedstringobject() with a NULL first argument, because in the
|
||
future these routines may try to do even more sharing of objects.
|
||
*/
|
||
PyObject *
|
||
PyString_FromStringAndSize(const char *str, int size)
|
||
{
|
||
register PyStringObject *op;
|
||
#ifndef DONT_SHARE_SHORT_STRINGS
|
||
if (size == 0 && (op = nullstring) != NULL) {
|
||
#ifdef COUNT_ALLOCS
|
||
null_strings++;
|
||
#endif
|
||
Py_INCREF(op);
|
||
return (PyObject *)op;
|
||
}
|
||
if (size == 1 && str != NULL &&
|
||
(op = characters[*str & UCHAR_MAX]) != NULL)
|
||
{
|
||
#ifdef COUNT_ALLOCS
|
||
one_strings++;
|
||
#endif
|
||
Py_INCREF(op);
|
||
return (PyObject *)op;
|
||
}
|
||
#endif /* DONT_SHARE_SHORT_STRINGS */
|
||
|
||
/* PyObject_NewVar is inlined */
|
||
op = (PyStringObject *)
|
||
PyObject_MALLOC(sizeof(PyStringObject) + size * sizeof(char));
|
||
if (op == NULL)
|
||
return PyErr_NoMemory();
|
||
PyObject_INIT_VAR(op, &PyString_Type, size);
|
||
#ifdef CACHE_HASH
|
||
op->ob_shash = -1;
|
||
#endif
|
||
#ifdef INTERN_STRINGS
|
||
op->ob_sinterned = NULL;
|
||
#endif
|
||
if (str != NULL)
|
||
memcpy(op->ob_sval, str, size);
|
||
op->ob_sval[size] = '\0';
|
||
#ifndef DONT_SHARE_SHORT_STRINGS
|
||
if (size == 0) {
|
||
PyObject *t = (PyObject *)op;
|
||
PyString_InternInPlace(&t);
|
||
op = (PyStringObject *)t;
|
||
nullstring = op;
|
||
Py_INCREF(op);
|
||
} else if (size == 1 && str != NULL) {
|
||
PyObject *t = (PyObject *)op;
|
||
PyString_InternInPlace(&t);
|
||
op = (PyStringObject *)t;
|
||
characters[*str & UCHAR_MAX] = op;
|
||
Py_INCREF(op);
|
||
}
|
||
#endif
|
||
return (PyObject *) op;
|
||
}
|
||
|
||
PyObject *
|
||
PyString_FromString(const char *str)
|
||
{
|
||
register size_t size = strlen(str);
|
||
register PyStringObject *op;
|
||
if (size > INT_MAX) {
|
||
PyErr_SetString(PyExc_OverflowError,
|
||
"string is too long for a Python string");
|
||
return NULL;
|
||
}
|
||
#ifndef DONT_SHARE_SHORT_STRINGS
|
||
if (size == 0 && (op = nullstring) != NULL) {
|
||
#ifdef COUNT_ALLOCS
|
||
null_strings++;
|
||
#endif
|
||
Py_INCREF(op);
|
||
return (PyObject *)op;
|
||
}
|
||
if (size == 1 && (op = characters[*str & UCHAR_MAX]) != NULL) {
|
||
#ifdef COUNT_ALLOCS
|
||
one_strings++;
|
||
#endif
|
||
Py_INCREF(op);
|
||
return (PyObject *)op;
|
||
}
|
||
#endif /* DONT_SHARE_SHORT_STRINGS */
|
||
|
||
/* PyObject_NewVar is inlined */
|
||
op = (PyStringObject *)
|
||
PyObject_MALLOC(sizeof(PyStringObject) + size * sizeof(char));
|
||
if (op == NULL)
|
||
return PyErr_NoMemory();
|
||
PyObject_INIT_VAR(op, &PyString_Type, size);
|
||
#ifdef CACHE_HASH
|
||
op->ob_shash = -1;
|
||
#endif
|
||
#ifdef INTERN_STRINGS
|
||
op->ob_sinterned = NULL;
|
||
#endif
|
||
strcpy(op->ob_sval, str);
|
||
#ifndef DONT_SHARE_SHORT_STRINGS
|
||
if (size == 0) {
|
||
PyObject *t = (PyObject *)op;
|
||
PyString_InternInPlace(&t);
|
||
op = (PyStringObject *)t;
|
||
nullstring = op;
|
||
Py_INCREF(op);
|
||
} else if (size == 1) {
|
||
PyObject *t = (PyObject *)op;
|
||
PyString_InternInPlace(&t);
|
||
op = (PyStringObject *)t;
|
||
characters[*str & UCHAR_MAX] = op;
|
||
Py_INCREF(op);
|
||
}
|
||
#endif
|
||
return (PyObject *) op;
|
||
}
|
||
|
||
PyObject *
|
||
PyString_FromFormatV(const char *format, va_list vargs)
|
||
{
|
||
va_list count = vargs;
|
||
int n = 0;
|
||
const char* f;
|
||
char *s;
|
||
PyObject* string;
|
||
|
||
/* step 1: figure out how large a buffer we need */
|
||
for (f = format; *f; f++) {
|
||
if (*f == '%') {
|
||
const char* p = f;
|
||
while (*++f && *f != '%' && !isalpha(Py_CHARMASK(*f)))
|
||
;
|
||
|
||
/* skip the 'l' in %ld, since it doesn't change the
|
||
width. although only %d is supported (see
|
||
"expand" section below), others can be easily
|
||
add */
|
||
if (*f == 'l' && *(f+1) == 'd')
|
||
++f;
|
||
|
||
switch (*f) {
|
||
case 'c':
|
||
(void)va_arg(count, int);
|
||
/* fall through... */
|
||
case '%':
|
||
n++;
|
||
break;
|
||
case 'd': case 'i': case 'x':
|
||
(void) va_arg(count, int);
|
||
/* 20 bytes should be enough to hold a 64-bit
|
||
integer */
|
||
n += 20;
|
||
break;
|
||
case 's':
|
||
s = va_arg(count, char*);
|
||
n += strlen(s);
|
||
break;
|
||
case 'p':
|
||
(void) va_arg(count, int);
|
||
/* maximum 64-bit pointer representation:
|
||
* 0xffffffffffffffff
|
||
* so 19 characters is enough.
|
||
*/
|
||
n += 19;
|
||
break;
|
||
default:
|
||
/* if we stumble upon an unknown
|
||
formatting code, copy the rest of
|
||
the format string to the output
|
||
string. (we cannot just skip the
|
||
code, since there's no way to know
|
||
what's in the argument list) */
|
||
n += strlen(p);
|
||
goto expand;
|
||
}
|
||
} else
|
||
n++;
|
||
}
|
||
expand:
|
||
/* step 2: fill the buffer */
|
||
string = PyString_FromStringAndSize(NULL, n);
|
||
if (!string)
|
||
return NULL;
|
||
|
||
s = PyString_AsString(string);
|
||
|
||
for (f = format; *f; f++) {
|
||
if (*f == '%') {
|
||
const char* p = f++;
|
||
int i, longflag = 0;
|
||
/* parse the width.precision part (we're only
|
||
interested in the precision value, if any) */
|
||
n = 0;
|
||
while (isdigit(Py_CHARMASK(*f)))
|
||
n = (n*10) + *f++ - '0';
|
||
if (*f == '.') {
|
||
f++;
|
||
n = 0;
|
||
while (isdigit(Py_CHARMASK(*f)))
|
||
n = (n*10) + *f++ - '0';
|
||
}
|
||
while (*f && *f != '%' && !isalpha(Py_CHARMASK(*f)))
|
||
f++;
|
||
/* handle the long flag, but only for %ld. others
|
||
can be added when necessary. */
|
||
if (*f == 'l' && *(f+1) == 'd') {
|
||
longflag = 1;
|
||
++f;
|
||
}
|
||
|
||
switch (*f) {
|
||
case 'c':
|
||
*s++ = va_arg(vargs, int);
|
||
break;
|
||
case 'd':
|
||
if (longflag)
|
||
sprintf(s, "%ld", va_arg(vargs, long));
|
||
else
|
||
sprintf(s, "%d", va_arg(vargs, int));
|
||
s += strlen(s);
|
||
break;
|
||
case 'i':
|
||
sprintf(s, "%i", va_arg(vargs, int));
|
||
s += strlen(s);
|
||
break;
|
||
case 'x':
|
||
sprintf(s, "%x", va_arg(vargs, int));
|
||
s += strlen(s);
|
||
break;
|
||
case 's':
|
||
p = va_arg(vargs, char*);
|
||
i = strlen(p);
|
||
if (n > 0 && i > n)
|
||
i = n;
|
||
memcpy(s, p, i);
|
||
s += i;
|
||
break;
|
||
case 'p':
|
||
sprintf(s, "%p", va_arg(vargs, void*));
|
||
/* %p is ill-defined: ensure leading 0x. */
|
||
if (s[1] == 'X')
|
||
s[1] = 'x';
|
||
else if (s[1] != 'x') {
|
||
memmove(s+2, s, strlen(s)+1);
|
||
s[0] = '0';
|
||
s[1] = 'x';
|
||
}
|
||
s += strlen(s);
|
||
break;
|
||
case '%':
|
||
*s++ = '%';
|
||
break;
|
||
default:
|
||
strcpy(s, p);
|
||
s += strlen(s);
|
||
goto end;
|
||
}
|
||
} else
|
||
*s++ = *f;
|
||
}
|
||
|
||
end:
|
||
_PyString_Resize(&string, s - PyString_AS_STRING(string));
|
||
return string;
|
||
}
|
||
|
||
PyObject *
|
||
PyString_FromFormat(const char *format, ...)
|
||
{
|
||
PyObject* ret;
|
||
va_list vargs;
|
||
|
||
#ifdef HAVE_STDARG_PROTOTYPES
|
||
va_start(vargs, format);
|
||
#else
|
||
va_start(vargs);
|
||
#endif
|
||
ret = PyString_FromFormatV(format, vargs);
|
||
va_end(vargs);
|
||
return ret;
|
||
}
|
||
|
||
|
||
PyObject *PyString_Decode(const char *s,
|
||
int size,
|
||
const char *encoding,
|
||
const char *errors)
|
||
{
|
||
PyObject *v, *str;
|
||
|
||
str = PyString_FromStringAndSize(s, size);
|
||
if (str == NULL)
|
||
return NULL;
|
||
v = PyString_AsDecodedString(str, encoding, errors);
|
||
Py_DECREF(str);
|
||
return v;
|
||
}
|
||
|
||
PyObject *PyString_AsDecodedObject(PyObject *str,
|
||
const char *encoding,
|
||
const char *errors)
|
||
{
|
||
PyObject *v;
|
||
|
||
if (!PyString_Check(str)) {
|
||
PyErr_BadArgument();
|
||
goto onError;
|
||
}
|
||
|
||
if (encoding == NULL) {
|
||
#ifdef Py_USING_UNICODE
|
||
encoding = PyUnicode_GetDefaultEncoding();
|
||
#else
|
||
PyErr_SetString(PyExc_ValueError, "no encoding specified");
|
||
goto onError;
|
||
#endif
|
||
}
|
||
|
||
/* Decode via the codec registry */
|
||
v = PyCodec_Decode(str, encoding, errors);
|
||
if (v == NULL)
|
||
goto onError;
|
||
|
||
return v;
|
||
|
||
onError:
|
||
return NULL;
|
||
}
|
||
|
||
PyObject *PyString_AsDecodedString(PyObject *str,
|
||
const char *encoding,
|
||
const char *errors)
|
||
{
|
||
PyObject *v;
|
||
|
||
v = PyString_AsDecodedObject(str, encoding, errors);
|
||
if (v == NULL)
|
||
goto onError;
|
||
|
||
#ifdef Py_USING_UNICODE
|
||
/* Convert Unicode to a string using the default encoding */
|
||
if (PyUnicode_Check(v)) {
|
||
PyObject *temp = v;
|
||
v = PyUnicode_AsEncodedString(v, NULL, NULL);
|
||
Py_DECREF(temp);
|
||
if (v == NULL)
|
||
goto onError;
|
||
}
|
||
#endif
|
||
if (!PyString_Check(v)) {
|
||
PyErr_Format(PyExc_TypeError,
|
||
"decoder did not return a string object (type=%.400s)",
|
||
v->ob_type->tp_name);
|
||
Py_DECREF(v);
|
||
goto onError;
|
||
}
|
||
|
||
return v;
|
||
|
||
onError:
|
||
return NULL;
|
||
}
|
||
|
||
PyObject *PyString_Encode(const char *s,
|
||
int size,
|
||
const char *encoding,
|
||
const char *errors)
|
||
{
|
||
PyObject *v, *str;
|
||
|
||
str = PyString_FromStringAndSize(s, size);
|
||
if (str == NULL)
|
||
return NULL;
|
||
v = PyString_AsEncodedString(str, encoding, errors);
|
||
Py_DECREF(str);
|
||
return v;
|
||
}
|
||
|
||
PyObject *PyString_AsEncodedObject(PyObject *str,
|
||
const char *encoding,
|
||
const char *errors)
|
||
{
|
||
PyObject *v;
|
||
|
||
if (!PyString_Check(str)) {
|
||
PyErr_BadArgument();
|
||
goto onError;
|
||
}
|
||
|
||
if (encoding == NULL) {
|
||
#ifdef Py_USING_UNICODE
|
||
encoding = PyUnicode_GetDefaultEncoding();
|
||
#else
|
||
PyErr_SetString(PyExc_ValueError, "no encoding specified");
|
||
goto onError;
|
||
#endif
|
||
}
|
||
|
||
/* Encode via the codec registry */
|
||
v = PyCodec_Encode(str, encoding, errors);
|
||
if (v == NULL)
|
||
goto onError;
|
||
|
||
return v;
|
||
|
||
onError:
|
||
return NULL;
|
||
}
|
||
|
||
PyObject *PyString_AsEncodedString(PyObject *str,
|
||
const char *encoding,
|
||
const char *errors)
|
||
{
|
||
PyObject *v;
|
||
|
||
v = PyString_AsEncodedObject(str, encoding, errors);
|
||
if (v == NULL)
|
||
goto onError;
|
||
|
||
#ifdef Py_USING_UNICODE
|
||
/* Convert Unicode to a string using the default encoding */
|
||
if (PyUnicode_Check(v)) {
|
||
PyObject *temp = v;
|
||
v = PyUnicode_AsEncodedString(v, NULL, NULL);
|
||
Py_DECREF(temp);
|
||
if (v == NULL)
|
||
goto onError;
|
||
}
|
||
#endif
|
||
if (!PyString_Check(v)) {
|
||
PyErr_Format(PyExc_TypeError,
|
||
"encoder did not return a string object (type=%.400s)",
|
||
v->ob_type->tp_name);
|
||
Py_DECREF(v);
|
||
goto onError;
|
||
}
|
||
|
||
return v;
|
||
|
||
onError:
|
||
return NULL;
|
||
}
|
||
|
||
static void
|
||
string_dealloc(PyObject *op)
|
||
{
|
||
PyObject_DEL(op);
|
||
}
|
||
|
||
static int
|
||
string_getsize(register PyObject *op)
|
||
{
|
||
char *s;
|
||
int len;
|
||
if (PyString_AsStringAndSize(op, &s, &len))
|
||
return -1;
|
||
return len;
|
||
}
|
||
|
||
static /*const*/ char *
|
||
string_getbuffer(register PyObject *op)
|
||
{
|
||
char *s;
|
||
int len;
|
||
if (PyString_AsStringAndSize(op, &s, &len))
|
||
return NULL;
|
||
return s;
|
||
}
|
||
|
||
int
|
||
PyString_Size(register PyObject *op)
|
||
{
|
||
if (!PyString_Check(op))
|
||
return string_getsize(op);
|
||
return ((PyStringObject *)op) -> ob_size;
|
||
}
|
||
|
||
/*const*/ char *
|
||
PyString_AsString(register PyObject *op)
|
||
{
|
||
if (!PyString_Check(op))
|
||
return string_getbuffer(op);
|
||
return ((PyStringObject *)op) -> ob_sval;
|
||
}
|
||
|
||
int
|
||
PyString_AsStringAndSize(register PyObject *obj,
|
||
register char **s,
|
||
register int *len)
|
||
{
|
||
if (s == NULL) {
|
||
PyErr_BadInternalCall();
|
||
return -1;
|
||
}
|
||
|
||
if (!PyString_Check(obj)) {
|
||
#ifdef Py_USING_UNICODE
|
||
if (PyUnicode_Check(obj)) {
|
||
obj = _PyUnicode_AsDefaultEncodedString(obj, NULL);
|
||
if (obj == NULL)
|
||
return -1;
|
||
}
|
||
else
|
||
#endif
|
||
{
|
||
PyErr_Format(PyExc_TypeError,
|
||
"expected string or Unicode object, "
|
||
"%.200s found", obj->ob_type->tp_name);
|
||
return -1;
|
||
}
|
||
}
|
||
|
||
*s = PyString_AS_STRING(obj);
|
||
if (len != NULL)
|
||
*len = PyString_GET_SIZE(obj);
|
||
else if ((int)strlen(*s) != PyString_GET_SIZE(obj)) {
|
||
PyErr_SetString(PyExc_TypeError,
|
||
"expected string without null bytes");
|
||
return -1;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
/* Methods */
|
||
|
||
static int
|
||
string_print(PyStringObject *op, FILE *fp, int flags)
|
||
{
|
||
int i;
|
||
char c;
|
||
int quote;
|
||
/* XXX Ought to check for interrupts when writing long strings */
|
||
if (flags & Py_PRINT_RAW) {
|
||
fwrite(op->ob_sval, 1, (int) op->ob_size, fp);
|
||
return 0;
|
||
}
|
||
|
||
/* figure out which quote to use; single is preferred */
|
||
quote = '\'';
|
||
if (strchr(op->ob_sval, '\'') && !strchr(op->ob_sval, '"'))
|
||
quote = '"';
|
||
|
||
fputc(quote, fp);
|
||
for (i = 0; i < op->ob_size; i++) {
|
||
c = op->ob_sval[i];
|
||
if (c == quote || c == '\\')
|
||
fprintf(fp, "\\%c", c);
|
||
else if (c == '\t')
|
||
fprintf(fp, "\\t");
|
||
else if (c == '\n')
|
||
fprintf(fp, "\\n");
|
||
else if (c == '\r')
|
||
fprintf(fp, "\\r");
|
||
else if (c < ' ' || c >= 0x7f)
|
||
fprintf(fp, "\\x%02x", c & 0xff);
|
||
else
|
||
fputc(c, fp);
|
||
}
|
||
fputc(quote, fp);
|
||
return 0;
|
||
}
|
||
|
||
static PyObject *
|
||
string_repr(register PyStringObject *op)
|
||
{
|
||
size_t newsize = 2 + 4 * op->ob_size * sizeof(char);
|
||
PyObject *v;
|
||
if (newsize > INT_MAX) {
|
||
PyErr_SetString(PyExc_OverflowError,
|
||
"string is too large to make repr");
|
||
}
|
||
v = PyString_FromStringAndSize((char *)NULL, newsize);
|
||
if (v == NULL) {
|
||
return NULL;
|
||
}
|
||
else {
|
||
register int i;
|
||
register char c;
|
||
register char *p;
|
||
int quote;
|
||
|
||
/* figure out which quote to use; single is preferred */
|
||
quote = '\'';
|
||
if (strchr(op->ob_sval, '\'') && !strchr(op->ob_sval, '"'))
|
||
quote = '"';
|
||
|
||
p = ((PyStringObject *)v)->ob_sval;
|
||
*p++ = quote;
|
||
for (i = 0; i < op->ob_size; i++) {
|
||
c = op->ob_sval[i];
|
||
if (c == quote || c == '\\')
|
||
*p++ = '\\', *p++ = c;
|
||
else if (c == '\t')
|
||
*p++ = '\\', *p++ = 't';
|
||
else if (c == '\n')
|
||
*p++ = '\\', *p++ = 'n';
|
||
else if (c == '\r')
|
||
*p++ = '\\', *p++ = 'r';
|
||
else if (c < ' ' || c >= 0x7f) {
|
||
sprintf(p, "\\x%02x", c & 0xff);
|
||
p += 4;
|
||
}
|
||
else
|
||
*p++ = c;
|
||
}
|
||
*p++ = quote;
|
||
*p = '\0';
|
||
_PyString_Resize(
|
||
&v, (int) (p - ((PyStringObject *)v)->ob_sval));
|
||
return v;
|
||
}
|
||
}
|
||
|
||
static PyObject *
|
||
string_str(PyObject *s)
|
||
{
|
||
Py_INCREF(s);
|
||
return s;
|
||
}
|
||
|
||
static int
|
||
string_length(PyStringObject *a)
|
||
{
|
||
return a->ob_size;
|
||
}
|
||
|
||
static PyObject *
|
||
string_concat(register PyStringObject *a, register PyObject *bb)
|
||
{
|
||
register unsigned int size;
|
||
register PyStringObject *op;
|
||
if (!PyString_Check(bb)) {
|
||
#ifdef Py_USING_UNICODE
|
||
if (PyUnicode_Check(bb))
|
||
return PyUnicode_Concat((PyObject *)a, bb);
|
||
#endif
|
||
PyErr_Format(PyExc_TypeError,
|
||
"cannot add type \"%.200s\" to string",
|
||
bb->ob_type->tp_name);
|
||
return NULL;
|
||
}
|
||
#define b ((PyStringObject *)bb)
|
||
/* Optimize cases with empty left or right operand */
|
||
if (a->ob_size == 0) {
|
||
Py_INCREF(bb);
|
||
return bb;
|
||
}
|
||
if (b->ob_size == 0) {
|
||
Py_INCREF(a);
|
||
return (PyObject *)a;
|
||
}
|
||
size = a->ob_size + b->ob_size;
|
||
/* PyObject_NewVar is inlined */
|
||
op = (PyStringObject *)
|
||
PyObject_MALLOC(sizeof(PyStringObject) + size * sizeof(char));
|
||
if (op == NULL)
|
||
return PyErr_NoMemory();
|
||
PyObject_INIT_VAR(op, &PyString_Type, size);
|
||
#ifdef CACHE_HASH
|
||
op->ob_shash = -1;
|
||
#endif
|
||
#ifdef INTERN_STRINGS
|
||
op->ob_sinterned = NULL;
|
||
#endif
|
||
memcpy(op->ob_sval, a->ob_sval, (int) a->ob_size);
|
||
memcpy(op->ob_sval + a->ob_size, b->ob_sval, (int) b->ob_size);
|
||
op->ob_sval[size] = '\0';
|
||
return (PyObject *) op;
|
||
#undef b
|
||
}
|
||
|
||
static PyObject *
|
||
string_repeat(register PyStringObject *a, register int n)
|
||
{
|
||
register int i;
|
||
register int size;
|
||
register PyStringObject *op;
|
||
size_t nbytes;
|
||
if (n < 0)
|
||
n = 0;
|
||
/* watch out for overflows: the size can overflow int,
|
||
* and the # of bytes needed can overflow size_t
|
||
*/
|
||
size = a->ob_size * n;
|
||
if (n && size / n != a->ob_size) {
|
||
PyErr_SetString(PyExc_OverflowError,
|
||
"repeated string is too long");
|
||
return NULL;
|
||
}
|
||
if (size == a->ob_size) {
|
||
Py_INCREF(a);
|
||
return (PyObject *)a;
|
||
}
|
||
nbytes = size * sizeof(char);
|
||
if (nbytes / sizeof(char) != (size_t)size ||
|
||
nbytes + sizeof(PyStringObject) <= nbytes) {
|
||
PyErr_SetString(PyExc_OverflowError,
|
||
"repeated string is too long");
|
||
return NULL;
|
||
}
|
||
op = (PyStringObject *)
|
||
PyObject_MALLOC(sizeof(PyStringObject) + nbytes);
|
||
if (op == NULL)
|
||
return PyErr_NoMemory();
|
||
PyObject_INIT_VAR(op, &PyString_Type, size);
|
||
#ifdef CACHE_HASH
|
||
op->ob_shash = -1;
|
||
#endif
|
||
#ifdef INTERN_STRINGS
|
||
op->ob_sinterned = NULL;
|
||
#endif
|
||
for (i = 0; i < size; i += a->ob_size)
|
||
memcpy(op->ob_sval+i, a->ob_sval, (int) a->ob_size);
|
||
op->ob_sval[size] = '\0';
|
||
return (PyObject *) op;
|
||
}
|
||
|
||
/* String slice a[i:j] consists of characters a[i] ... a[j-1] */
|
||
|
||
static PyObject *
|
||
string_slice(register PyStringObject *a, register int i, register int j)
|
||
/* j -- may be negative! */
|
||
{
|
||
if (i < 0)
|
||
i = 0;
|
||
if (j < 0)
|
||
j = 0; /* Avoid signed/unsigned bug in next line */
|
||
if (j > a->ob_size)
|
||
j = a->ob_size;
|
||
if (i == 0 && j == a->ob_size) { /* It's the same as a */
|
||
Py_INCREF(a);
|
||
return (PyObject *)a;
|
||
}
|
||
if (j < i)
|
||
j = i;
|
||
return PyString_FromStringAndSize(a->ob_sval + i, (int) (j-i));
|
||
}
|
||
|
||
static int
|
||
string_contains(PyObject *a, PyObject *el)
|
||
{
|
||
register char *s, *end;
|
||
register char c;
|
||
#ifdef Py_USING_UNICODE
|
||
if (PyUnicode_Check(el))
|
||
return PyUnicode_Contains(a, el);
|
||
#endif
|
||
if (!PyString_Check(el) || PyString_Size(el) != 1) {
|
||
PyErr_SetString(PyExc_TypeError,
|
||
"'in <string>' requires character as left operand");
|
||
return -1;
|
||
}
|
||
c = PyString_AsString(el)[0];
|
||
s = PyString_AsString(a);
|
||
end = s + PyString_Size(a);
|
||
while (s < end) {
|
||
if (c == *s++)
|
||
return 1;
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
static PyObject *
|
||
string_item(PyStringObject *a, register int i)
|
||
{
|
||
PyObject *v;
|
||
char *pchar;
|
||
if (i < 0 || i >= a->ob_size) {
|
||
PyErr_SetString(PyExc_IndexError, "string index out of range");
|
||
return NULL;
|
||
}
|
||
pchar = a->ob_sval + i;
|
||
v = (PyObject *)characters[*pchar & UCHAR_MAX];
|
||
if (v == NULL)
|
||
v = PyString_FromStringAndSize(pchar, 1);
|
||
else {
|
||
#ifdef COUNT_ALLOCS
|
||
one_strings++;
|
||
#endif
|
||
Py_INCREF(v);
|
||
}
|
||
return v;
|
||
}
|
||
|
||
static PyObject*
|
||
string_richcompare(PyStringObject *a, PyStringObject *b, int op)
|
||
{
|
||
int c;
|
||
int len_a, len_b;
|
||
int min_len;
|
||
PyObject *result;
|
||
|
||
/* One of the objects is a string object. Make sure the
|
||
other one is one, too. */
|
||
if (a->ob_type != b->ob_type) {
|
||
result = Py_NotImplemented;
|
||
goto out;
|
||
}
|
||
if (a == b) {
|
||
switch (op) {
|
||
case Py_EQ:case Py_LE:case Py_GE:
|
||
result = Py_True;
|
||
goto out;
|
||
case Py_NE:case Py_LT:case Py_GT:
|
||
result = Py_False;
|
||
goto out;
|
||
}
|
||
}
|
||
if (op == Py_EQ) {
|
||
/* Supporting Py_NE here as well does not save
|
||
much time, since Py_NE is rarely used. */
|
||
if (a->ob_size == b->ob_size
|
||
&& (a->ob_sval[0] == b->ob_sval[0]
|
||
&& memcmp(a->ob_sval, b->ob_sval,
|
||
a->ob_size) == 0)) {
|
||
result = Py_True;
|
||
} else {
|
||
result = Py_False;
|
||
}
|
||
goto out;
|
||
}
|
||
len_a = a->ob_size; len_b = b->ob_size;
|
||
min_len = (len_a < len_b) ? len_a : len_b;
|
||
if (min_len > 0) {
|
||
c = Py_CHARMASK(*a->ob_sval) - Py_CHARMASK(*b->ob_sval);
|
||
if (c==0)
|
||
c = memcmp(a->ob_sval, b->ob_sval, min_len);
|
||
}else
|
||
c = 0;
|
||
if (c == 0)
|
||
c = (len_a < len_b) ? -1 : (len_a > len_b) ? 1 : 0;
|
||
switch (op) {
|
||
case Py_LT: c = c < 0; break;
|
||
case Py_LE: c = c <= 0; break;
|
||
case Py_EQ: assert(0); break; /* unreachable */
|
||
case Py_NE: c = c != 0; break;
|
||
case Py_GT: c = c > 0; break;
|
||
case Py_GE: c = c >= 0; break;
|
||
default:
|
||
result = Py_NotImplemented;
|
||
goto out;
|
||
}
|
||
result = c ? Py_True : Py_False;
|
||
out:
|
||
Py_INCREF(result);
|
||
return result;
|
||
}
|
||
|
||
int
|
||
_PyString_Eq(PyObject *o1, PyObject *o2)
|
||
{
|
||
PyStringObject *a, *b;
|
||
a = (PyStringObject*)o1;
|
||
b = (PyStringObject*)o2;
|
||
return a->ob_size == b->ob_size
|
||
&& *a->ob_sval == *b->ob_sval
|
||
&& memcmp(a->ob_sval, b->ob_sval, a->ob_size) == 0;
|
||
}
|
||
|
||
static long
|
||
string_hash(PyStringObject *a)
|
||
{
|
||
register int len;
|
||
register unsigned char *p;
|
||
register long x;
|
||
|
||
#ifdef CACHE_HASH
|
||
if (a->ob_shash != -1)
|
||
return a->ob_shash;
|
||
#ifdef INTERN_STRINGS
|
||
if (a->ob_sinterned != NULL)
|
||
return (a->ob_shash =
|
||
((PyStringObject *)(a->ob_sinterned))->ob_shash);
|
||
#endif
|
||
#endif
|
||
len = a->ob_size;
|
||
p = (unsigned char *) a->ob_sval;
|
||
x = *p << 7;
|
||
while (--len >= 0)
|
||
x = (1000003*x) ^ *p++;
|
||
x ^= a->ob_size;
|
||
if (x == -1)
|
||
x = -2;
|
||
#ifdef CACHE_HASH
|
||
a->ob_shash = x;
|
||
#endif
|
||
return x;
|
||
}
|
||
|
||
static int
|
||
string_buffer_getreadbuf(PyStringObject *self, int index, const void **ptr)
|
||
{
|
||
if ( index != 0 ) {
|
||
PyErr_SetString(PyExc_SystemError,
|
||
"accessing non-existent string segment");
|
||
return -1;
|
||
}
|
||
*ptr = (void *)self->ob_sval;
|
||
return self->ob_size;
|
||
}
|
||
|
||
static int
|
||
string_buffer_getwritebuf(PyStringObject *self, int index, const void **ptr)
|
||
{
|
||
PyErr_SetString(PyExc_TypeError,
|
||
"Cannot use string as modifiable buffer");
|
||
return -1;
|
||
}
|
||
|
||
static int
|
||
string_buffer_getsegcount(PyStringObject *self, int *lenp)
|
||
{
|
||
if ( lenp )
|
||
*lenp = self->ob_size;
|
||
return 1;
|
||
}
|
||
|
||
static int
|
||
string_buffer_getcharbuf(PyStringObject *self, int index, const char **ptr)
|
||
{
|
||
if ( index != 0 ) {
|
||
PyErr_SetString(PyExc_SystemError,
|
||
"accessing non-existent string segment");
|
||
return -1;
|
||
}
|
||
*ptr = self->ob_sval;
|
||
return self->ob_size;
|
||
}
|
||
|
||
static PySequenceMethods string_as_sequence = {
|
||
(inquiry)string_length, /*sq_length*/
|
||
(binaryfunc)string_concat, /*sq_concat*/
|
||
(intargfunc)string_repeat, /*sq_repeat*/
|
||
(intargfunc)string_item, /*sq_item*/
|
||
(intintargfunc)string_slice, /*sq_slice*/
|
||
0, /*sq_ass_item*/
|
||
0, /*sq_ass_slice*/
|
||
(objobjproc)string_contains /*sq_contains*/
|
||
};
|
||
|
||
static PyBufferProcs string_as_buffer = {
|
||
(getreadbufferproc)string_buffer_getreadbuf,
|
||
(getwritebufferproc)string_buffer_getwritebuf,
|
||
(getsegcountproc)string_buffer_getsegcount,
|
||
(getcharbufferproc)string_buffer_getcharbuf,
|
||
};
|
||
|
||
|
||
|
||
#define LEFTSTRIP 0
|
||
#define RIGHTSTRIP 1
|
||
#define BOTHSTRIP 2
|
||
|
||
|
||
static PyObject *
|
||
split_whitespace(const char *s, int len, int maxsplit)
|
||
{
|
||
int i, j, err;
|
||
PyObject* item;
|
||
PyObject *list = PyList_New(0);
|
||
|
||
if (list == NULL)
|
||
return NULL;
|
||
|
||
for (i = j = 0; i < len; ) {
|
||
while (i < len && isspace(Py_CHARMASK(s[i])))
|
||
i++;
|
||
j = i;
|
||
while (i < len && !isspace(Py_CHARMASK(s[i])))
|
||
i++;
|
||
if (j < i) {
|
||
if (maxsplit-- <= 0)
|
||
break;
|
||
item = PyString_FromStringAndSize(s+j, (int)(i-j));
|
||
if (item == NULL)
|
||
goto finally;
|
||
err = PyList_Append(list, item);
|
||
Py_DECREF(item);
|
||
if (err < 0)
|
||
goto finally;
|
||
while (i < len && isspace(Py_CHARMASK(s[i])))
|
||
i++;
|
||
j = i;
|
||
}
|
||
}
|
||
if (j < len) {
|
||
item = PyString_FromStringAndSize(s+j, (int)(len - j));
|
||
if (item == NULL)
|
||
goto finally;
|
||
err = PyList_Append(list, item);
|
||
Py_DECREF(item);
|
||
if (err < 0)
|
||
goto finally;
|
||
}
|
||
return list;
|
||
finally:
|
||
Py_DECREF(list);
|
||
return NULL;
|
||
}
|
||
|
||
|
||
static char split__doc__[] =
|
||
"S.split([sep [,maxsplit]]) -> list of strings\n\
|
||
\n\
|
||
Return a list of the words in the string S, using sep as the\n\
|
||
delimiter string. If maxsplit is given, at most maxsplit\n\
|
||
splits are done. If sep is not specified, any whitespace string\n\
|
||
is a separator.";
|
||
|
||
static PyObject *
|
||
string_split(PyStringObject *self, PyObject *args)
|
||
{
|
||
int len = PyString_GET_SIZE(self), n, i, j, err;
|
||
int maxsplit = -1;
|
||
const char *s = PyString_AS_STRING(self), *sub;
|
||
PyObject *list, *item, *subobj = Py_None;
|
||
|
||
if (!PyArg_ParseTuple(args, "|Oi:split", &subobj, &maxsplit))
|
||
return NULL;
|
||
if (maxsplit < 0)
|
||
maxsplit = INT_MAX;
|
||
if (subobj == Py_None)
|
||
return split_whitespace(s, len, maxsplit);
|
||
if (PyString_Check(subobj)) {
|
||
sub = PyString_AS_STRING(subobj);
|
||
n = PyString_GET_SIZE(subobj);
|
||
}
|
||
#ifdef Py_USING_UNICODE
|
||
else if (PyUnicode_Check(subobj))
|
||
return PyUnicode_Split((PyObject *)self, subobj, maxsplit);
|
||
#endif
|
||
else if (PyObject_AsCharBuffer(subobj, &sub, &n))
|
||
return NULL;
|
||
if (n == 0) {
|
||
PyErr_SetString(PyExc_ValueError, "empty separator");
|
||
return NULL;
|
||
}
|
||
|
||
list = PyList_New(0);
|
||
if (list == NULL)
|
||
return NULL;
|
||
|
||
i = j = 0;
|
||
while (i+n <= len) {
|
||
if (s[i] == sub[0] && memcmp(s+i, sub, n) == 0) {
|
||
if (maxsplit-- <= 0)
|
||
break;
|
||
item = PyString_FromStringAndSize(s+j, (int)(i-j));
|
||
if (item == NULL)
|
||
goto fail;
|
||
err = PyList_Append(list, item);
|
||
Py_DECREF(item);
|
||
if (err < 0)
|
||
goto fail;
|
||
i = j = i + n;
|
||
}
|
||
else
|
||
i++;
|
||
}
|
||
item = PyString_FromStringAndSize(s+j, (int)(len-j));
|
||
if (item == NULL)
|
||
goto fail;
|
||
err = PyList_Append(list, item);
|
||
Py_DECREF(item);
|
||
if (err < 0)
|
||
goto fail;
|
||
|
||
return list;
|
||
|
||
fail:
|
||
Py_DECREF(list);
|
||
return NULL;
|
||
}
|
||
|
||
|
||
static char join__doc__[] =
|
||
"S.join(sequence) -> string\n\
|
||
\n\
|
||
Return a string which is the concatenation of the strings in the\n\
|
||
sequence. The separator between elements is S.";
|
||
|
||
static PyObject *
|
||
string_join(PyStringObject *self, PyObject *orig)
|
||
{
|
||
char *sep = PyString_AS_STRING(self);
|
||
const int seplen = PyString_GET_SIZE(self);
|
||
PyObject *res = NULL;
|
||
char *p;
|
||
int seqlen = 0;
|
||
size_t sz = 0;
|
||
int i;
|
||
PyObject *seq, *item;
|
||
|
||
seq = PySequence_Fast(orig, "");
|
||
if (seq == NULL) {
|
||
if (PyErr_ExceptionMatches(PyExc_TypeError))
|
||
PyErr_Format(PyExc_TypeError,
|
||
"sequence expected, %.80s found",
|
||
orig->ob_type->tp_name);
|
||
return NULL;
|
||
}
|
||
|
||
seqlen = PySequence_Size(seq);
|
||
if (seqlen == 0) {
|
||
Py_DECREF(seq);
|
||
return PyString_FromString("");
|
||
}
|
||
if (seqlen == 1) {
|
||
item = PySequence_Fast_GET_ITEM(seq, 0);
|
||
if (!PyString_Check(item) && !PyUnicode_Check(item)) {
|
||
PyErr_Format(PyExc_TypeError,
|
||
"sequence item 0: expected string,"
|
||
" %.80s found",
|
||
item->ob_type->tp_name);
|
||
Py_DECREF(seq);
|
||
return NULL;
|
||
}
|
||
Py_INCREF(item);
|
||
Py_DECREF(seq);
|
||
return item;
|
||
}
|
||
|
||
/* There are at least two things to join. Do a pre-pass to figure out
|
||
* the total amount of space we'll need (sz), see whether any argument
|
||
* is absurd, and defer to the Unicode join if appropriate.
|
||
*/
|
||
for (i = 0; i < seqlen; i++) {
|
||
const size_t old_sz = sz;
|
||
item = PySequence_Fast_GET_ITEM(seq, i);
|
||
if (!PyString_Check(item)){
|
||
#ifdef Py_USING_UNICODE
|
||
if (PyUnicode_Check(item)) {
|
||
/* Defer to Unicode join.
|
||
* CAUTION: There's no gurantee that the
|
||
* original sequence can be iterated over
|
||
* again, so we must pass seq here.
|
||
*/
|
||
PyObject *result;
|
||
result = PyUnicode_Join((PyObject *)self, seq);
|
||
Py_DECREF(seq);
|
||
return result;
|
||
}
|
||
#endif
|
||
PyErr_Format(PyExc_TypeError,
|
||
"sequence item %i: expected string,"
|
||
" %.80s found",
|
||
i, item->ob_type->tp_name);
|
||
Py_DECREF(seq);
|
||
return NULL;
|
||
}
|
||
sz += PyString_GET_SIZE(item);
|
||
if (i != 0)
|
||
sz += seplen;
|
||
if (sz < old_sz || sz > INT_MAX) {
|
||
PyErr_SetString(PyExc_OverflowError,
|
||
"join() is too long for a Python string");
|
||
Py_DECREF(seq);
|
||
return NULL;
|
||
}
|
||
}
|
||
|
||
/* Allocate result space. */
|
||
res = PyString_FromStringAndSize((char*)NULL, (int)sz);
|
||
if (res == NULL) {
|
||
Py_DECREF(seq);
|
||
return NULL;
|
||
}
|
||
|
||
/* Catenate everything. */
|
||
p = PyString_AS_STRING(res);
|
||
for (i = 0; i < seqlen; ++i) {
|
||
size_t n;
|
||
item = PySequence_Fast_GET_ITEM(seq, i);
|
||
n = PyString_GET_SIZE(item);
|
||
memcpy(p, PyString_AS_STRING(item), n);
|
||
p += n;
|
||
if (i < seqlen - 1) {
|
||
memcpy(p, sep, seplen);
|
||
p += seplen;
|
||
}
|
||
}
|
||
|
||
Py_DECREF(seq);
|
||
return res;
|
||
}
|
||
|
||
PyObject *
|
||
_PyString_Join(PyObject *sep, PyObject *x)
|
||
{
|
||
assert(sep != NULL && PyString_Check(sep));
|
||
assert(x != NULL);
|
||
return string_join((PyStringObject *)sep, x);
|
||
}
|
||
|
||
static long
|
||
string_find_internal(PyStringObject *self, PyObject *args, int dir)
|
||
{
|
||
const char *s = PyString_AS_STRING(self), *sub;
|
||
int len = PyString_GET_SIZE(self);
|
||
int n, i = 0, last = INT_MAX;
|
||
PyObject *subobj;
|
||
|
||
if (!PyArg_ParseTuple(args, "O|O&O&:find/rfind/index/rindex",
|
||
&subobj, _PyEval_SliceIndex, &i, _PyEval_SliceIndex, &last))
|
||
return -2;
|
||
if (PyString_Check(subobj)) {
|
||
sub = PyString_AS_STRING(subobj);
|
||
n = PyString_GET_SIZE(subobj);
|
||
}
|
||
#ifdef Py_USING_UNICODE
|
||
else if (PyUnicode_Check(subobj))
|
||
return PyUnicode_Find((PyObject *)self, subobj, i, last, 1);
|
||
#endif
|
||
else if (PyObject_AsCharBuffer(subobj, &sub, &n))
|
||
return -2;
|
||
|
||
if (last > len)
|
||
last = len;
|
||
if (last < 0)
|
||
last += len;
|
||
if (last < 0)
|
||
last = 0;
|
||
if (i < 0)
|
||
i += len;
|
||
if (i < 0)
|
||
i = 0;
|
||
|
||
if (dir > 0) {
|
||
if (n == 0 && i <= last)
|
||
return (long)i;
|
||
last -= n;
|
||
for (; i <= last; ++i)
|
||
if (s[i] == sub[0] && memcmp(&s[i], sub, n) == 0)
|
||
return (long)i;
|
||
}
|
||
else {
|
||
int j;
|
||
|
||
if (n == 0 && i <= last)
|
||
return (long)last;
|
||
for (j = last-n; j >= i; --j)
|
||
if (s[j] == sub[0] && memcmp(&s[j], sub, n) == 0)
|
||
return (long)j;
|
||
}
|
||
|
||
return -1;
|
||
}
|
||
|
||
|
||
static char find__doc__[] =
|
||
"S.find(sub [,start [,end]]) -> int\n\
|
||
\n\
|
||
Return the lowest index in S where substring sub is found,\n\
|
||
such that sub is contained within s[start,end]. Optional\n\
|
||
arguments start and end are interpreted as in slice notation.\n\
|
||
\n\
|
||
Return -1 on failure.";
|
||
|
||
static PyObject *
|
||
string_find(PyStringObject *self, PyObject *args)
|
||
{
|
||
long result = string_find_internal(self, args, +1);
|
||
if (result == -2)
|
||
return NULL;
|
||
return PyInt_FromLong(result);
|
||
}
|
||
|
||
|
||
static char index__doc__[] =
|
||
"S.index(sub [,start [,end]]) -> int\n\
|
||
\n\
|
||
Like S.find() but raise ValueError when the substring is not found.";
|
||
|
||
static PyObject *
|
||
string_index(PyStringObject *self, PyObject *args)
|
||
{
|
||
long result = string_find_internal(self, args, +1);
|
||
if (result == -2)
|
||
return NULL;
|
||
if (result == -1) {
|
||
PyErr_SetString(PyExc_ValueError,
|
||
"substring not found in string.index");
|
||
return NULL;
|
||
}
|
||
return PyInt_FromLong(result);
|
||
}
|
||
|
||
|
||
static char rfind__doc__[] =
|
||
"S.rfind(sub [,start [,end]]) -> int\n\
|
||
\n\
|
||
Return the highest index in S where substring sub is found,\n\
|
||
such that sub is contained within s[start,end]. Optional\n\
|
||
arguments start and end are interpreted as in slice notation.\n\
|
||
\n\
|
||
Return -1 on failure.";
|
||
|
||
static PyObject *
|
||
string_rfind(PyStringObject *self, PyObject *args)
|
||
{
|
||
long result = string_find_internal(self, args, -1);
|
||
if (result == -2)
|
||
return NULL;
|
||
return PyInt_FromLong(result);
|
||
}
|
||
|
||
|
||
static char rindex__doc__[] =
|
||
"S.rindex(sub [,start [,end]]) -> int\n\
|
||
\n\
|
||
Like S.rfind() but raise ValueError when the substring is not found.";
|
||
|
||
static PyObject *
|
||
string_rindex(PyStringObject *self, PyObject *args)
|
||
{
|
||
long result = string_find_internal(self, args, -1);
|
||
if (result == -2)
|
||
return NULL;
|
||
if (result == -1) {
|
||
PyErr_SetString(PyExc_ValueError,
|
||
"substring not found in string.rindex");
|
||
return NULL;
|
||
}
|
||
return PyInt_FromLong(result);
|
||
}
|
||
|
||
|
||
static PyObject *
|
||
do_strip(PyStringObject *self, int striptype)
|
||
{
|
||
char *s = PyString_AS_STRING(self);
|
||
int len = PyString_GET_SIZE(self), i, j;
|
||
|
||
i = 0;
|
||
if (striptype != RIGHTSTRIP) {
|
||
while (i < len && isspace(Py_CHARMASK(s[i]))) {
|
||
i++;
|
||
}
|
||
}
|
||
|
||
j = len;
|
||
if (striptype != LEFTSTRIP) {
|
||
do {
|
||
j--;
|
||
} while (j >= i && isspace(Py_CHARMASK(s[j])));
|
||
j++;
|
||
}
|
||
|
||
if (i == 0 && j == len) {
|
||
Py_INCREF(self);
|
||
return (PyObject*)self;
|
||
}
|
||
else
|
||
return PyString_FromStringAndSize(s+i, j-i);
|
||
}
|
||
|
||
|
||
static char strip__doc__[] =
|
||
"S.strip() -> string\n\
|
||
\n\
|
||
Return a copy of the string S with leading and trailing\n\
|
||
whitespace removed.";
|
||
|
||
static PyObject *
|
||
string_strip(PyStringObject *self)
|
||
{
|
||
return do_strip(self, BOTHSTRIP);
|
||
}
|
||
|
||
|
||
static char lstrip__doc__[] =
|
||
"S.lstrip() -> string\n\
|
||
\n\
|
||
Return a copy of the string S with leading whitespace removed.";
|
||
|
||
static PyObject *
|
||
string_lstrip(PyStringObject *self)
|
||
{
|
||
return do_strip(self, LEFTSTRIP);
|
||
}
|
||
|
||
|
||
static char rstrip__doc__[] =
|
||
"S.rstrip() -> string\n\
|
||
\n\
|
||
Return a copy of the string S with trailing whitespace removed.";
|
||
|
||
static PyObject *
|
||
string_rstrip(PyStringObject *self)
|
||
{
|
||
return do_strip(self, RIGHTSTRIP);
|
||
}
|
||
|
||
|
||
static char lower__doc__[] =
|
||
"S.lower() -> string\n\
|
||
\n\
|
||
Return a copy of the string S converted to lowercase.";
|
||
|
||
static PyObject *
|
||
string_lower(PyStringObject *self)
|
||
{
|
||
char *s = PyString_AS_STRING(self), *s_new;
|
||
int i, n = PyString_GET_SIZE(self);
|
||
PyObject *new;
|
||
|
||
new = PyString_FromStringAndSize(NULL, n);
|
||
if (new == NULL)
|
||
return NULL;
|
||
s_new = PyString_AsString(new);
|
||
for (i = 0; i < n; i++) {
|
||
int c = Py_CHARMASK(*s++);
|
||
if (isupper(c)) {
|
||
*s_new = tolower(c);
|
||
} else
|
||
*s_new = c;
|
||
s_new++;
|
||
}
|
||
return new;
|
||
}
|
||
|
||
|
||
static char upper__doc__[] =
|
||
"S.upper() -> string\n\
|
||
\n\
|
||
Return a copy of the string S converted to uppercase.";
|
||
|
||
static PyObject *
|
||
string_upper(PyStringObject *self)
|
||
{
|
||
char *s = PyString_AS_STRING(self), *s_new;
|
||
int i, n = PyString_GET_SIZE(self);
|
||
PyObject *new;
|
||
|
||
new = PyString_FromStringAndSize(NULL, n);
|
||
if (new == NULL)
|
||
return NULL;
|
||
s_new = PyString_AsString(new);
|
||
for (i = 0; i < n; i++) {
|
||
int c = Py_CHARMASK(*s++);
|
||
if (islower(c)) {
|
||
*s_new = toupper(c);
|
||
} else
|
||
*s_new = c;
|
||
s_new++;
|
||
}
|
||
return new;
|
||
}
|
||
|
||
|
||
static char title__doc__[] =
|
||
"S.title() -> string\n\
|
||
\n\
|
||
Return a titlecased version of S, i.e. words start with uppercase\n\
|
||
characters, all remaining cased characters have lowercase.";
|
||
|
||
static PyObject*
|
||
string_title(PyStringObject *self)
|
||
{
|
||
char *s = PyString_AS_STRING(self), *s_new;
|
||
int i, n = PyString_GET_SIZE(self);
|
||
int previous_is_cased = 0;
|
||
PyObject *new;
|
||
|
||
new = PyString_FromStringAndSize(NULL, n);
|
||
if (new == NULL)
|
||
return NULL;
|
||
s_new = PyString_AsString(new);
|
||
for (i = 0; i < n; i++) {
|
||
int c = Py_CHARMASK(*s++);
|
||
if (islower(c)) {
|
||
if (!previous_is_cased)
|
||
c = toupper(c);
|
||
previous_is_cased = 1;
|
||
} else if (isupper(c)) {
|
||
if (previous_is_cased)
|
||
c = tolower(c);
|
||
previous_is_cased = 1;
|
||
} else
|
||
previous_is_cased = 0;
|
||
*s_new++ = c;
|
||
}
|
||
return new;
|
||
}
|
||
|
||
static char capitalize__doc__[] =
|
||
"S.capitalize() -> string\n\
|
||
\n\
|
||
Return a copy of the string S with only its first character\n\
|
||
capitalized.";
|
||
|
||
static PyObject *
|
||
string_capitalize(PyStringObject *self)
|
||
{
|
||
char *s = PyString_AS_STRING(self), *s_new;
|
||
int i, n = PyString_GET_SIZE(self);
|
||
PyObject *new;
|
||
|
||
new = PyString_FromStringAndSize(NULL, n);
|
||
if (new == NULL)
|
||
return NULL;
|
||
s_new = PyString_AsString(new);
|
||
if (0 < n) {
|
||
int c = Py_CHARMASK(*s++);
|
||
if (islower(c))
|
||
*s_new = toupper(c);
|
||
else
|
||
*s_new = c;
|
||
s_new++;
|
||
}
|
||
for (i = 1; i < n; i++) {
|
||
int c = Py_CHARMASK(*s++);
|
||
if (isupper(c))
|
||
*s_new = tolower(c);
|
||
else
|
||
*s_new = c;
|
||
s_new++;
|
||
}
|
||
return new;
|
||
}
|
||
|
||
|
||
static char count__doc__[] =
|
||
"S.count(sub[, start[, end]]) -> int\n\
|
||
\n\
|
||
Return the number of occurrences of substring sub in string\n\
|
||
S[start:end]. Optional arguments start and end are\n\
|
||
interpreted as in slice notation.";
|
||
|
||
static PyObject *
|
||
string_count(PyStringObject *self, PyObject *args)
|
||
{
|
||
const char *s = PyString_AS_STRING(self), *sub;
|
||
int len = PyString_GET_SIZE(self), n;
|
||
int i = 0, last = INT_MAX;
|
||
int m, r;
|
||
PyObject *subobj;
|
||
|
||
if (!PyArg_ParseTuple(args, "O|O&O&:count", &subobj,
|
||
_PyEval_SliceIndex, &i, _PyEval_SliceIndex, &last))
|
||
return NULL;
|
||
|
||
if (PyString_Check(subobj)) {
|
||
sub = PyString_AS_STRING(subobj);
|
||
n = PyString_GET_SIZE(subobj);
|
||
}
|
||
#ifdef Py_USING_UNICODE
|
||
else if (PyUnicode_Check(subobj)) {
|
||
int count;
|
||
count = PyUnicode_Count((PyObject *)self, subobj, i, last);
|
||
if (count == -1)
|
||
return NULL;
|
||
else
|
||
return PyInt_FromLong((long) count);
|
||
}
|
||
#endif
|
||
else if (PyObject_AsCharBuffer(subobj, &sub, &n))
|
||
return NULL;
|
||
|
||
if (last > len)
|
||
last = len;
|
||
if (last < 0)
|
||
last += len;
|
||
if (last < 0)
|
||
last = 0;
|
||
if (i < 0)
|
||
i += len;
|
||
if (i < 0)
|
||
i = 0;
|
||
m = last + 1 - n;
|
||
if (n == 0)
|
||
return PyInt_FromLong((long) (m-i));
|
||
|
||
r = 0;
|
||
while (i < m) {
|
||
if (!memcmp(s+i, sub, n)) {
|
||
r++;
|
||
i += n;
|
||
} else {
|
||
i++;
|
||
}
|
||
}
|
||
return PyInt_FromLong((long) r);
|
||
}
|
||
|
||
|
||
static char swapcase__doc__[] =
|
||
"S.swapcase() -> string\n\
|
||
\n\
|
||
Return a copy of the string S with uppercase characters\n\
|
||
converted to lowercase and vice versa.";
|
||
|
||
static PyObject *
|
||
string_swapcase(PyStringObject *self)
|
||
{
|
||
char *s = PyString_AS_STRING(self), *s_new;
|
||
int i, n = PyString_GET_SIZE(self);
|
||
PyObject *new;
|
||
|
||
new = PyString_FromStringAndSize(NULL, n);
|
||
if (new == NULL)
|
||
return NULL;
|
||
s_new = PyString_AsString(new);
|
||
for (i = 0; i < n; i++) {
|
||
int c = Py_CHARMASK(*s++);
|
||
if (islower(c)) {
|
||
*s_new = toupper(c);
|
||
}
|
||
else if (isupper(c)) {
|
||
*s_new = tolower(c);
|
||
}
|
||
else
|
||
*s_new = c;
|
||
s_new++;
|
||
}
|
||
return new;
|
||
}
|
||
|
||
|
||
static char translate__doc__[] =
|
||
"S.translate(table [,deletechars]) -> string\n\
|
||
\n\
|
||
Return a copy of the string S, where all characters occurring\n\
|
||
in the optional argument deletechars are removed, and the\n\
|
||
remaining characters have been mapped through the given\n\
|
||
translation table, which must be a string of length 256.";
|
||
|
||
static PyObject *
|
||
string_translate(PyStringObject *self, PyObject *args)
|
||
{
|
||
register char *input, *output;
|
||
register const char *table;
|
||
register int i, c, changed = 0;
|
||
PyObject *input_obj = (PyObject*)self;
|
||
const char *table1, *output_start, *del_table=NULL;
|
||
int inlen, tablen, dellen = 0;
|
||
PyObject *result;
|
||
int trans_table[256];
|
||
PyObject *tableobj, *delobj = NULL;
|
||
|
||
if (!PyArg_ParseTuple(args, "O|O:translate",
|
||
&tableobj, &delobj))
|
||
return NULL;
|
||
|
||
if (PyString_Check(tableobj)) {
|
||
table1 = PyString_AS_STRING(tableobj);
|
||
tablen = PyString_GET_SIZE(tableobj);
|
||
}
|
||
#ifdef Py_USING_UNICODE
|
||
else if (PyUnicode_Check(tableobj)) {
|
||
/* Unicode .translate() does not support the deletechars
|
||
parameter; instead a mapping to None will cause characters
|
||
to be deleted. */
|
||
if (delobj != NULL) {
|
||
PyErr_SetString(PyExc_TypeError,
|
||
"deletions are implemented differently for unicode");
|
||
return NULL;
|
||
}
|
||
return PyUnicode_Translate((PyObject *)self, tableobj, NULL);
|
||
}
|
||
#endif
|
||
else if (PyObject_AsCharBuffer(tableobj, &table1, &tablen))
|
||
return NULL;
|
||
|
||
if (delobj != NULL) {
|
||
if (PyString_Check(delobj)) {
|
||
del_table = PyString_AS_STRING(delobj);
|
||
dellen = PyString_GET_SIZE(delobj);
|
||
}
|
||
#ifdef Py_USING_UNICODE
|
||
else if (PyUnicode_Check(delobj)) {
|
||
PyErr_SetString(PyExc_TypeError,
|
||
"deletions are implemented differently for unicode");
|
||
return NULL;
|
||
}
|
||
#endif
|
||
else if (PyObject_AsCharBuffer(delobj, &del_table, &dellen))
|
||
return NULL;
|
||
|
||
if (tablen != 256) {
|
||
PyErr_SetString(PyExc_ValueError,
|
||
"translation table must be 256 characters long");
|
||
return NULL;
|
||
}
|
||
}
|
||
else {
|
||
del_table = NULL;
|
||
dellen = 0;
|
||
}
|
||
|
||
table = table1;
|
||
inlen = PyString_Size(input_obj);
|
||
result = PyString_FromStringAndSize((char *)NULL, inlen);
|
||
if (result == NULL)
|
||
return NULL;
|
||
output_start = output = PyString_AsString(result);
|
||
input = PyString_AsString(input_obj);
|
||
|
||
if (dellen == 0) {
|
||
/* If no deletions are required, use faster code */
|
||
for (i = inlen; --i >= 0; ) {
|
||
c = Py_CHARMASK(*input++);
|
||
if (Py_CHARMASK((*output++ = table[c])) != c)
|
||
changed = 1;
|
||
}
|
||
if (changed)
|
||
return result;
|
||
Py_DECREF(result);
|
||
Py_INCREF(input_obj);
|
||
return input_obj;
|
||
}
|
||
|
||
for (i = 0; i < 256; i++)
|
||
trans_table[i] = Py_CHARMASK(table[i]);
|
||
|
||
for (i = 0; i < dellen; i++)
|
||
trans_table[(int) Py_CHARMASK(del_table[i])] = -1;
|
||
|
||
for (i = inlen; --i >= 0; ) {
|
||
c = Py_CHARMASK(*input++);
|
||
if (trans_table[c] != -1)
|
||
if (Py_CHARMASK(*output++ = (char)trans_table[c]) == c)
|
||
continue;
|
||
changed = 1;
|
||
}
|
||
if (!changed) {
|
||
Py_DECREF(result);
|
||
Py_INCREF(input_obj);
|
||
return input_obj;
|
||
}
|
||
/* Fix the size of the resulting string */
|
||
if (inlen > 0 &&_PyString_Resize(&result, output-output_start))
|
||
return NULL;
|
||
return result;
|
||
}
|
||
|
||
|
||
/* What follows is used for implementing replace(). Perry Stoll. */
|
||
|
||
/*
|
||
mymemfind
|
||
|
||
strstr replacement for arbitrary blocks of memory.
|
||
|
||
Locates the first occurrence in the memory pointed to by MEM of the
|
||
contents of memory pointed to by PAT. Returns the index into MEM if
|
||
found, or -1 if not found. If len of PAT is greater than length of
|
||
MEM, the function returns -1.
|
||
*/
|
||
static int
|
||
mymemfind(const char *mem, int len, const char *pat, int pat_len)
|
||
{
|
||
register int ii;
|
||
|
||
/* pattern can not occur in the last pat_len-1 chars */
|
||
len -= pat_len;
|
||
|
||
for (ii = 0; ii <= len; ii++) {
|
||
if (mem[ii] == pat[0] && memcmp(&mem[ii], pat, pat_len) == 0) {
|
||
return ii;
|
||
}
|
||
}
|
||
return -1;
|
||
}
|
||
|
||
/*
|
||
mymemcnt
|
||
|
||
Return the number of distinct times PAT is found in MEM.
|
||
meaning mem=1111 and pat==11 returns 2.
|
||
mem=11111 and pat==11 also return 2.
|
||
*/
|
||
static int
|
||
mymemcnt(const char *mem, int len, const char *pat, int pat_len)
|
||
{
|
||
register int offset = 0;
|
||
int nfound = 0;
|
||
|
||
while (len >= 0) {
|
||
offset = mymemfind(mem, len, pat, pat_len);
|
||
if (offset == -1)
|
||
break;
|
||
mem += offset + pat_len;
|
||
len -= offset + pat_len;
|
||
nfound++;
|
||
}
|
||
return nfound;
|
||
}
|
||
|
||
/*
|
||
mymemreplace
|
||
|
||
Return a string in which all occurrences of PAT in memory STR are
|
||
replaced with SUB.
|
||
|
||
If length of PAT is less than length of STR or there are no occurrences
|
||
of PAT in STR, then the original string is returned. Otherwise, a new
|
||
string is allocated here and returned.
|
||
|
||
on return, out_len is:
|
||
the length of output string, or
|
||
-1 if the input string is returned, or
|
||
unchanged if an error occurs (no memory).
|
||
|
||
return value is:
|
||
the new string allocated locally, or
|
||
NULL if an error occurred.
|
||
*/
|
||
static char *
|
||
mymemreplace(const char *str, int len, /* input string */
|
||
const char *pat, int pat_len, /* pattern string to find */
|
||
const char *sub, int sub_len, /* substitution string */
|
||
int count, /* number of replacements */
|
||
int *out_len)
|
||
{
|
||
char *out_s;
|
||
char *new_s;
|
||
int nfound, offset, new_len;
|
||
|
||
if (len == 0 || pat_len > len)
|
||
goto return_same;
|
||
|
||
/* find length of output string */
|
||
nfound = mymemcnt(str, len, pat, pat_len);
|
||
if (count < 0)
|
||
count = INT_MAX;
|
||
else if (nfound > count)
|
||
nfound = count;
|
||
if (nfound == 0)
|
||
goto return_same;
|
||
|
||
new_len = len + nfound*(sub_len - pat_len);
|
||
if (new_len == 0) {
|
||
/* Have to allocate something for the caller to free(). */
|
||
out_s = (char *)PyMem_MALLOC(1);
|
||
if (out_s == NULL)
|
||
return NULL;
|
||
out_s[0] = '\0';
|
||
}
|
||
else {
|
||
assert(new_len > 0);
|
||
new_s = (char *)PyMem_MALLOC(new_len);
|
||
if (new_s == NULL)
|
||
return NULL;
|
||
out_s = new_s;
|
||
|
||
for (; count > 0 && len > 0; --count) {
|
||
/* find index of next instance of pattern */
|
||
offset = mymemfind(str, len, pat, pat_len);
|
||
if (offset == -1)
|
||
break;
|
||
|
||
/* copy non matching part of input string */
|
||
memcpy(new_s, str, offset);
|
||
str += offset + pat_len;
|
||
len -= offset + pat_len;
|
||
|
||
/* copy substitute into the output string */
|
||
new_s += offset;
|
||
memcpy(new_s, sub, sub_len);
|
||
new_s += sub_len;
|
||
}
|
||
/* copy any remaining values into output string */
|
||
if (len > 0)
|
||
memcpy(new_s, str, len);
|
||
}
|
||
*out_len = new_len;
|
||
return out_s;
|
||
|
||
return_same:
|
||
*out_len = -1;
|
||
return (char *)str; /* cast away const */
|
||
}
|
||
|
||
|
||
static char replace__doc__[] =
|
||
"S.replace (old, new[, maxsplit]) -> string\n\
|
||
\n\
|
||
Return a copy of string S with all occurrences of substring\n\
|
||
old replaced by new. If the optional argument maxsplit is\n\
|
||
given, only the first maxsplit occurrences are replaced.";
|
||
|
||
static PyObject *
|
||
string_replace(PyStringObject *self, PyObject *args)
|
||
{
|
||
const char *str = PyString_AS_STRING(self), *sub, *repl;
|
||
char *new_s;
|
||
int len = PyString_GET_SIZE(self), sub_len, repl_len, out_len;
|
||
int count = -1;
|
||
PyObject *new;
|
||
PyObject *subobj, *replobj;
|
||
|
||
if (!PyArg_ParseTuple(args, "OO|i:replace",
|
||
&subobj, &replobj, &count))
|
||
return NULL;
|
||
|
||
if (PyString_Check(subobj)) {
|
||
sub = PyString_AS_STRING(subobj);
|
||
sub_len = PyString_GET_SIZE(subobj);
|
||
}
|
||
#ifdef Py_USING_UNICODE
|
||
else if (PyUnicode_Check(subobj))
|
||
return PyUnicode_Replace((PyObject *)self,
|
||
subobj, replobj, count);
|
||
#endif
|
||
else if (PyObject_AsCharBuffer(subobj, &sub, &sub_len))
|
||
return NULL;
|
||
|
||
if (PyString_Check(replobj)) {
|
||
repl = PyString_AS_STRING(replobj);
|
||
repl_len = PyString_GET_SIZE(replobj);
|
||
}
|
||
#ifdef Py_USING_UNICODE
|
||
else if (PyUnicode_Check(replobj))
|
||
return PyUnicode_Replace((PyObject *)self,
|
||
subobj, replobj, count);
|
||
#endif
|
||
else if (PyObject_AsCharBuffer(replobj, &repl, &repl_len))
|
||
return NULL;
|
||
|
||
if (sub_len <= 0) {
|
||
PyErr_SetString(PyExc_ValueError, "empty pattern string");
|
||
return NULL;
|
||
}
|
||
new_s = mymemreplace(str,len,sub,sub_len,repl,repl_len,count,&out_len);
|
||
if (new_s == NULL) {
|
||
PyErr_NoMemory();
|
||
return NULL;
|
||
}
|
||
if (out_len == -1) {
|
||
/* we're returning another reference to self */
|
||
new = (PyObject*)self;
|
||
Py_INCREF(new);
|
||
}
|
||
else {
|
||
new = PyString_FromStringAndSize(new_s, out_len);
|
||
PyMem_FREE(new_s);
|
||
}
|
||
return new;
|
||
}
|
||
|
||
|
||
static char startswith__doc__[] =
|
||
"S.startswith(prefix[, start[, end]]) -> int\n\
|
||
\n\
|
||
Return 1 if S starts with the specified prefix, otherwise return 0. With\n\
|
||
optional start, test S beginning at that position. With optional end, stop\n\
|
||
comparing S at that position.";
|
||
|
||
static PyObject *
|
||
string_startswith(PyStringObject *self, PyObject *args)
|
||
{
|
||
const char* str = PyString_AS_STRING(self);
|
||
int len = PyString_GET_SIZE(self);
|
||
const char* prefix;
|
||
int plen;
|
||
int start = 0;
|
||
int end = -1;
|
||
PyObject *subobj;
|
||
|
||
if (!PyArg_ParseTuple(args, "O|O&O&:startswith", &subobj,
|
||
_PyEval_SliceIndex, &start, _PyEval_SliceIndex, &end))
|
||
return NULL;
|
||
if (PyString_Check(subobj)) {
|
||
prefix = PyString_AS_STRING(subobj);
|
||
plen = PyString_GET_SIZE(subobj);
|
||
}
|
||
#ifdef Py_USING_UNICODE
|
||
else if (PyUnicode_Check(subobj)) {
|
||
int rc;
|
||
rc = PyUnicode_Tailmatch((PyObject *)self,
|
||
subobj, start, end, -1);
|
||
if (rc == -1)
|
||
return NULL;
|
||
else
|
||
return PyInt_FromLong((long) rc);
|
||
}
|
||
#endif
|
||
else if (PyObject_AsCharBuffer(subobj, &prefix, &plen))
|
||
return NULL;
|
||
|
||
/* adopt Java semantics for index out of range. it is legal for
|
||
* offset to be == plen, but this only returns true if prefix is
|
||
* the empty string.
|
||
*/
|
||
if (start < 0 || start+plen > len)
|
||
return PyInt_FromLong(0);
|
||
|
||
if (!memcmp(str+start, prefix, plen)) {
|
||
/* did the match end after the specified end? */
|
||
if (end < 0)
|
||
return PyInt_FromLong(1);
|
||
else if (end - start < plen)
|
||
return PyInt_FromLong(0);
|
||
else
|
||
return PyInt_FromLong(1);
|
||
}
|
||
else return PyInt_FromLong(0);
|
||
}
|
||
|
||
|
||
static char endswith__doc__[] =
|
||
"S.endswith(suffix[, start[, end]]) -> int\n\
|
||
\n\
|
||
Return 1 if S ends with the specified suffix, otherwise return 0. With\n\
|
||
optional start, test S beginning at that position. With optional end, stop\n\
|
||
comparing S at that position.";
|
||
|
||
static PyObject *
|
||
string_endswith(PyStringObject *self, PyObject *args)
|
||
{
|
||
const char* str = PyString_AS_STRING(self);
|
||
int len = PyString_GET_SIZE(self);
|
||
const char* suffix;
|
||
int slen;
|
||
int start = 0;
|
||
int end = -1;
|
||
int lower, upper;
|
||
PyObject *subobj;
|
||
|
||
if (!PyArg_ParseTuple(args, "O|O&O&:endswith", &subobj,
|
||
_PyEval_SliceIndex, &start, _PyEval_SliceIndex, &end))
|
||
return NULL;
|
||
if (PyString_Check(subobj)) {
|
||
suffix = PyString_AS_STRING(subobj);
|
||
slen = PyString_GET_SIZE(subobj);
|
||
}
|
||
#ifdef Py_USING_UNICODE
|
||
else if (PyUnicode_Check(subobj)) {
|
||
int rc;
|
||
rc = PyUnicode_Tailmatch((PyObject *)self,
|
||
subobj, start, end, +1);
|
||
if (rc == -1)
|
||
return NULL;
|
||
else
|
||
return PyInt_FromLong((long) rc);
|
||
}
|
||
#endif
|
||
else if (PyObject_AsCharBuffer(subobj, &suffix, &slen))
|
||
return NULL;
|
||
|
||
if (start < 0 || start > len || slen > len)
|
||
return PyInt_FromLong(0);
|
||
|
||
upper = (end >= 0 && end <= len) ? end : len;
|
||
lower = (upper - slen) > start ? (upper - slen) : start;
|
||
|
||
if (upper-lower >= slen && !memcmp(str+lower, suffix, slen))
|
||
return PyInt_FromLong(1);
|
||
else return PyInt_FromLong(0);
|
||
}
|
||
|
||
|
||
static char encode__doc__[] =
|
||
"S.encode([encoding[,errors]]) -> object\n\
|
||
\n\
|
||
Encodes S using the codec registered for encoding. encoding defaults\n\
|
||
to the default encoding. errors may be given to set a different error\n\
|
||
handling scheme. Default is 'strict' meaning that encoding errors raise\n\
|
||
a ValueError. Other possible values are 'ignore' and 'replace'.";
|
||
|
||
static PyObject *
|
||
string_encode(PyStringObject *self, PyObject *args)
|
||
{
|
||
char *encoding = NULL;
|
||
char *errors = NULL;
|
||
if (!PyArg_ParseTuple(args, "|ss:encode", &encoding, &errors))
|
||
return NULL;
|
||
return PyString_AsEncodedObject((PyObject *)self, encoding, errors);
|
||
}
|
||
|
||
|
||
static char decode__doc__[] =
|
||
"S.decode([encoding[,errors]]) -> object\n\
|
||
\n\
|
||
Decodes S using the codec registered for encoding. encoding defaults\n\
|
||
to the default encoding. errors may be given to set a different error\n\
|
||
handling scheme. Default is 'strict' meaning that encoding errors raise\n\
|
||
a ValueError. Other possible values are 'ignore' and 'replace'.";
|
||
|
||
static PyObject *
|
||
string_decode(PyStringObject *self, PyObject *args)
|
||
{
|
||
char *encoding = NULL;
|
||
char *errors = NULL;
|
||
if (!PyArg_ParseTuple(args, "|ss:decode", &encoding, &errors))
|
||
return NULL;
|
||
return PyString_AsDecodedObject((PyObject *)self, encoding, errors);
|
||
}
|
||
|
||
|
||
static char expandtabs__doc__[] =
|
||
"S.expandtabs([tabsize]) -> string\n\
|
||
\n\
|
||
Return a copy of S where all tab characters are expanded using spaces.\n\
|
||
If tabsize is not given, a tab size of 8 characters is assumed.";
|
||
|
||
static PyObject*
|
||
string_expandtabs(PyStringObject *self, PyObject *args)
|
||
{
|
||
const char *e, *p;
|
||
char *q;
|
||
int i, j;
|
||
PyObject *u;
|
||
int tabsize = 8;
|
||
|
||
if (!PyArg_ParseTuple(args, "|i:expandtabs", &tabsize))
|
||
return NULL;
|
||
|
||
/* First pass: determine size of output string */
|
||
i = j = 0;
|
||
e = PyString_AS_STRING(self) + PyString_GET_SIZE(self);
|
||
for (p = PyString_AS_STRING(self); p < e; p++)
|
||
if (*p == '\t') {
|
||
if (tabsize > 0)
|
||
j += tabsize - (j % tabsize);
|
||
}
|
||
else {
|
||
j++;
|
||
if (*p == '\n' || *p == '\r') {
|
||
i += j;
|
||
j = 0;
|
||
}
|
||
}
|
||
|
||
/* Second pass: create output string and fill it */
|
||
u = PyString_FromStringAndSize(NULL, i + j);
|
||
if (!u)
|
||
return NULL;
|
||
|
||
j = 0;
|
||
q = PyString_AS_STRING(u);
|
||
|
||
for (p = PyString_AS_STRING(self); p < e; p++)
|
||
if (*p == '\t') {
|
||
if (tabsize > 0) {
|
||
i = tabsize - (j % tabsize);
|
||
j += i;
|
||
while (i--)
|
||
*q++ = ' ';
|
||
}
|
||
}
|
||
else {
|
||
j++;
|
||
*q++ = *p;
|
||
if (*p == '\n' || *p == '\r')
|
||
j = 0;
|
||
}
|
||
|
||
return u;
|
||
}
|
||
|
||
static
|
||
PyObject *pad(PyStringObject *self,
|
||
int left,
|
||
int right,
|
||
char fill)
|
||
{
|
||
PyObject *u;
|
||
|
||
if (left < 0)
|
||
left = 0;
|
||
if (right < 0)
|
||
right = 0;
|
||
|
||
if (left == 0 && right == 0) {
|
||
Py_INCREF(self);
|
||
return (PyObject *)self;
|
||
}
|
||
|
||
u = PyString_FromStringAndSize(NULL,
|
||
left + PyString_GET_SIZE(self) + right);
|
||
if (u) {
|
||
if (left)
|
||
memset(PyString_AS_STRING(u), fill, left);
|
||
memcpy(PyString_AS_STRING(u) + left,
|
||
PyString_AS_STRING(self),
|
||
PyString_GET_SIZE(self));
|
||
if (right)
|
||
memset(PyString_AS_STRING(u) + left + PyString_GET_SIZE(self),
|
||
fill, right);
|
||
}
|
||
|
||
return u;
|
||
}
|
||
|
||
static char ljust__doc__[] =
|
||
"S.ljust(width) -> string\n\
|
||
\n\
|
||
Return S left justified in a string of length width. Padding is\n\
|
||
done using spaces.";
|
||
|
||
static PyObject *
|
||
string_ljust(PyStringObject *self, PyObject *args)
|
||
{
|
||
int width;
|
||
if (!PyArg_ParseTuple(args, "i:ljust", &width))
|
||
return NULL;
|
||
|
||
if (PyString_GET_SIZE(self) >= width) {
|
||
Py_INCREF(self);
|
||
return (PyObject*) self;
|
||
}
|
||
|
||
return pad(self, 0, width - PyString_GET_SIZE(self), ' ');
|
||
}
|
||
|
||
|
||
static char rjust__doc__[] =
|
||
"S.rjust(width) -> string\n\
|
||
\n\
|
||
Return S right justified in a string of length width. Padding is\n\
|
||
done using spaces.";
|
||
|
||
static PyObject *
|
||
string_rjust(PyStringObject *self, PyObject *args)
|
||
{
|
||
int width;
|
||
if (!PyArg_ParseTuple(args, "i:rjust", &width))
|
||
return NULL;
|
||
|
||
if (PyString_GET_SIZE(self) >= width) {
|
||
Py_INCREF(self);
|
||
return (PyObject*) self;
|
||
}
|
||
|
||
return pad(self, width - PyString_GET_SIZE(self), 0, ' ');
|
||
}
|
||
|
||
|
||
static char center__doc__[] =
|
||
"S.center(width) -> string\n\
|
||
\n\
|
||
Return S centered in a string of length width. Padding is done\n\
|
||
using spaces.";
|
||
|
||
static PyObject *
|
||
string_center(PyStringObject *self, PyObject *args)
|
||
{
|
||
int marg, left;
|
||
int width;
|
||
|
||
if (!PyArg_ParseTuple(args, "i:center", &width))
|
||
return NULL;
|
||
|
||
if (PyString_GET_SIZE(self) >= width) {
|
||
Py_INCREF(self);
|
||
return (PyObject*) self;
|
||
}
|
||
|
||
marg = width - PyString_GET_SIZE(self);
|
||
left = marg / 2 + (marg & width & 1);
|
||
|
||
return pad(self, left, marg - left, ' ');
|
||
}
|
||
|
||
#if 0
|
||
static char zfill__doc__[] =
|
||
"S.zfill(width) -> string\n\
|
||
\n\
|
||
Pad a numeric string x with zeros on the left, to fill a field\n\
|
||
of the specified width. The string x is never truncated.";
|
||
|
||
static PyObject *
|
||
string_zfill(PyStringObject *self, PyObject *args)
|
||
{
|
||
int fill;
|
||
PyObject *u;
|
||
char *str;
|
||
|
||
int width;
|
||
if (!PyArg_ParseTuple(args, "i:zfill", &width))
|
||
return NULL;
|
||
|
||
if (PyString_GET_SIZE(self) >= width) {
|
||
Py_INCREF(self);
|
||
return (PyObject*) self;
|
||
}
|
||
|
||
fill = width - PyString_GET_SIZE(self);
|
||
|
||
u = pad(self, fill, 0, '0');
|
||
if (u == NULL)
|
||
return NULL;
|
||
|
||
str = PyString_AS_STRING(u);
|
||
if (str[fill] == '+' || str[fill] == '-') {
|
||
/* move sign to beginning of string */
|
||
str[0] = str[fill];
|
||
str[fill] = '0';
|
||
}
|
||
|
||
return u;
|
||
}
|
||
#endif
|
||
|
||
static char isspace__doc__[] =
|
||
"S.isspace() -> int\n\
|
||
\n\
|
||
Return 1 if there are only whitespace characters in S,\n\
|
||
0 otherwise.";
|
||
|
||
static PyObject*
|
||
string_isspace(PyStringObject *self)
|
||
{
|
||
register const unsigned char *p
|
||
= (unsigned char *) PyString_AS_STRING(self);
|
||
register const unsigned char *e;
|
||
|
||
/* Shortcut for single character strings */
|
||
if (PyString_GET_SIZE(self) == 1 &&
|
||
isspace(*p))
|
||
return PyInt_FromLong(1);
|
||
|
||
/* Special case for empty strings */
|
||
if (PyString_GET_SIZE(self) == 0)
|
||
return PyInt_FromLong(0);
|
||
|
||
e = p + PyString_GET_SIZE(self);
|
||
for (; p < e; p++) {
|
||
if (!isspace(*p))
|
||
return PyInt_FromLong(0);
|
||
}
|
||
return PyInt_FromLong(1);
|
||
}
|
||
|
||
|
||
static char isalpha__doc__[] =
|
||
"S.isalpha() -> int\n\
|
||
\n\
|
||
Return 1 if all characters in S are alphabetic\n\
|
||
and there is at least one character in S, 0 otherwise.";
|
||
|
||
static PyObject*
|
||
string_isalpha(PyStringObject *self)
|
||
{
|
||
register const unsigned char *p
|
||
= (unsigned char *) PyString_AS_STRING(self);
|
||
register const unsigned char *e;
|
||
|
||
/* Shortcut for single character strings */
|
||
if (PyString_GET_SIZE(self) == 1 &&
|
||
isalpha(*p))
|
||
return PyInt_FromLong(1);
|
||
|
||
/* Special case for empty strings */
|
||
if (PyString_GET_SIZE(self) == 0)
|
||
return PyInt_FromLong(0);
|
||
|
||
e = p + PyString_GET_SIZE(self);
|
||
for (; p < e; p++) {
|
||
if (!isalpha(*p))
|
||
return PyInt_FromLong(0);
|
||
}
|
||
return PyInt_FromLong(1);
|
||
}
|
||
|
||
|
||
static char isalnum__doc__[] =
|
||
"S.isalnum() -> int\n\
|
||
\n\
|
||
Return 1 if all characters in S are alphanumeric\n\
|
||
and there is at least one character in S, 0 otherwise.";
|
||
|
||
static PyObject*
|
||
string_isalnum(PyStringObject *self)
|
||
{
|
||
register const unsigned char *p
|
||
= (unsigned char *) PyString_AS_STRING(self);
|
||
register const unsigned char *e;
|
||
|
||
/* Shortcut for single character strings */
|
||
if (PyString_GET_SIZE(self) == 1 &&
|
||
isalnum(*p))
|
||
return PyInt_FromLong(1);
|
||
|
||
/* Special case for empty strings */
|
||
if (PyString_GET_SIZE(self) == 0)
|
||
return PyInt_FromLong(0);
|
||
|
||
e = p + PyString_GET_SIZE(self);
|
||
for (; p < e; p++) {
|
||
if (!isalnum(*p))
|
||
return PyInt_FromLong(0);
|
||
}
|
||
return PyInt_FromLong(1);
|
||
}
|
||
|
||
|
||
static char isdigit__doc__[] =
|
||
"S.isdigit() -> int\n\
|
||
\n\
|
||
Return 1 if there are only digit characters in S,\n\
|
||
0 otherwise.";
|
||
|
||
static PyObject*
|
||
string_isdigit(PyStringObject *self)
|
||
{
|
||
register const unsigned char *p
|
||
= (unsigned char *) PyString_AS_STRING(self);
|
||
register const unsigned char *e;
|
||
|
||
/* Shortcut for single character strings */
|
||
if (PyString_GET_SIZE(self) == 1 &&
|
||
isdigit(*p))
|
||
return PyInt_FromLong(1);
|
||
|
||
/* Special case for empty strings */
|
||
if (PyString_GET_SIZE(self) == 0)
|
||
return PyInt_FromLong(0);
|
||
|
||
e = p + PyString_GET_SIZE(self);
|
||
for (; p < e; p++) {
|
||
if (!isdigit(*p))
|
||
return PyInt_FromLong(0);
|
||
}
|
||
return PyInt_FromLong(1);
|
||
}
|
||
|
||
|
||
static char islower__doc__[] =
|
||
"S.islower() -> int\n\
|
||
\n\
|
||
Return 1 if all cased characters in S are lowercase and there is\n\
|
||
at least one cased character in S, 0 otherwise.";
|
||
|
||
static PyObject*
|
||
string_islower(PyStringObject *self)
|
||
{
|
||
register const unsigned char *p
|
||
= (unsigned char *) PyString_AS_STRING(self);
|
||
register const unsigned char *e;
|
||
int cased;
|
||
|
||
/* Shortcut for single character strings */
|
||
if (PyString_GET_SIZE(self) == 1)
|
||
return PyInt_FromLong(islower(*p) != 0);
|
||
|
||
/* Special case for empty strings */
|
||
if (PyString_GET_SIZE(self) == 0)
|
||
return PyInt_FromLong(0);
|
||
|
||
e = p + PyString_GET_SIZE(self);
|
||
cased = 0;
|
||
for (; p < e; p++) {
|
||
if (isupper(*p))
|
||
return PyInt_FromLong(0);
|
||
else if (!cased && islower(*p))
|
||
cased = 1;
|
||
}
|
||
return PyInt_FromLong(cased);
|
||
}
|
||
|
||
|
||
static char isupper__doc__[] =
|
||
"S.isupper() -> int\n\
|
||
\n\
|
||
Return 1 if all cased characters in S are uppercase and there is\n\
|
||
at least one cased character in S, 0 otherwise.";
|
||
|
||
static PyObject*
|
||
string_isupper(PyStringObject *self)
|
||
{
|
||
register const unsigned char *p
|
||
= (unsigned char *) PyString_AS_STRING(self);
|
||
register const unsigned char *e;
|
||
int cased;
|
||
|
||
/* Shortcut for single character strings */
|
||
if (PyString_GET_SIZE(self) == 1)
|
||
return PyInt_FromLong(isupper(*p) != 0);
|
||
|
||
/* Special case for empty strings */
|
||
if (PyString_GET_SIZE(self) == 0)
|
||
return PyInt_FromLong(0);
|
||
|
||
e = p + PyString_GET_SIZE(self);
|
||
cased = 0;
|
||
for (; p < e; p++) {
|
||
if (islower(*p))
|
||
return PyInt_FromLong(0);
|
||
else if (!cased && isupper(*p))
|
||
cased = 1;
|
||
}
|
||
return PyInt_FromLong(cased);
|
||
}
|
||
|
||
|
||
static char istitle__doc__[] =
|
||
"S.istitle() -> int\n\
|
||
\n\
|
||
Return 1 if S is a titlecased string, i.e. uppercase characters\n\
|
||
may only follow uncased characters and lowercase characters only cased\n\
|
||
ones. Return 0 otherwise.";
|
||
|
||
static PyObject*
|
||
string_istitle(PyStringObject *self, PyObject *uncased)
|
||
{
|
||
register const unsigned char *p
|
||
= (unsigned char *) PyString_AS_STRING(self);
|
||
register const unsigned char *e;
|
||
int cased, previous_is_cased;
|
||
|
||
/* Shortcut for single character strings */
|
||
if (PyString_GET_SIZE(self) == 1)
|
||
return PyInt_FromLong(isupper(*p) != 0);
|
||
|
||
/* Special case for empty strings */
|
||
if (PyString_GET_SIZE(self) == 0)
|
||
return PyInt_FromLong(0);
|
||
|
||
e = p + PyString_GET_SIZE(self);
|
||
cased = 0;
|
||
previous_is_cased = 0;
|
||
for (; p < e; p++) {
|
||
register const unsigned char ch = *p;
|
||
|
||
if (isupper(ch)) {
|
||
if (previous_is_cased)
|
||
return PyInt_FromLong(0);
|
||
previous_is_cased = 1;
|
||
cased = 1;
|
||
}
|
||
else if (islower(ch)) {
|
||
if (!previous_is_cased)
|
||
return PyInt_FromLong(0);
|
||
previous_is_cased = 1;
|
||
cased = 1;
|
||
}
|
||
else
|
||
previous_is_cased = 0;
|
||
}
|
||
return PyInt_FromLong(cased);
|
||
}
|
||
|
||
|
||
static char splitlines__doc__[] =
|
||
"S.splitlines([keepends]]) -> list of strings\n\
|
||
\n\
|
||
Return a list of the lines in S, breaking at line boundaries.\n\
|
||
Line breaks are not included in the resulting list unless keepends\n\
|
||
is given and true.";
|
||
|
||
#define SPLIT_APPEND(data, left, right) \
|
||
str = PyString_FromStringAndSize(data + left, right - left); \
|
||
if (!str) \
|
||
goto onError; \
|
||
if (PyList_Append(list, str)) { \
|
||
Py_DECREF(str); \
|
||
goto onError; \
|
||
} \
|
||
else \
|
||
Py_DECREF(str);
|
||
|
||
static PyObject*
|
||
string_splitlines(PyStringObject *self, PyObject *args)
|
||
{
|
||
register int i;
|
||
register int j;
|
||
int len;
|
||
int keepends = 0;
|
||
PyObject *list;
|
||
PyObject *str;
|
||
char *data;
|
||
|
||
if (!PyArg_ParseTuple(args, "|i:splitlines", &keepends))
|
||
return NULL;
|
||
|
||
data = PyString_AS_STRING(self);
|
||
len = PyString_GET_SIZE(self);
|
||
|
||
list = PyList_New(0);
|
||
if (!list)
|
||
goto onError;
|
||
|
||
for (i = j = 0; i < len; ) {
|
||
int eol;
|
||
|
||
/* Find a line and append it */
|
||
while (i < len && data[i] != '\n' && data[i] != '\r')
|
||
i++;
|
||
|
||
/* Skip the line break reading CRLF as one line break */
|
||
eol = i;
|
||
if (i < len) {
|
||
if (data[i] == '\r' && i + 1 < len &&
|
||
data[i+1] == '\n')
|
||
i += 2;
|
||
else
|
||
i++;
|
||
if (keepends)
|
||
eol = i;
|
||
}
|
||
SPLIT_APPEND(data, j, eol);
|
||
j = i;
|
||
}
|
||
if (j < len) {
|
||
SPLIT_APPEND(data, j, len);
|
||
}
|
||
|
||
return list;
|
||
|
||
onError:
|
||
Py_DECREF(list);
|
||
return NULL;
|
||
}
|
||
|
||
#undef SPLIT_APPEND
|
||
|
||
|
||
static PyMethodDef
|
||
string_methods[] = {
|
||
/* Counterparts of the obsolete stropmodule functions; except
|
||
string.maketrans(). */
|
||
{"join", (PyCFunction)string_join, METH_O, join__doc__},
|
||
{"split", (PyCFunction)string_split, METH_VARARGS, split__doc__},
|
||
{"lower", (PyCFunction)string_lower, METH_NOARGS, lower__doc__},
|
||
{"upper", (PyCFunction)string_upper, METH_NOARGS, upper__doc__},
|
||
{"islower", (PyCFunction)string_islower, METH_NOARGS, islower__doc__},
|
||
{"isupper", (PyCFunction)string_isupper, METH_NOARGS, isupper__doc__},
|
||
{"isspace", (PyCFunction)string_isspace, METH_NOARGS, isspace__doc__},
|
||
{"isdigit", (PyCFunction)string_isdigit, METH_NOARGS, isdigit__doc__},
|
||
{"istitle", (PyCFunction)string_istitle, METH_NOARGS, istitle__doc__},
|
||
{"isalpha", (PyCFunction)string_isalpha, METH_NOARGS, isalpha__doc__},
|
||
{"isalnum", (PyCFunction)string_isalnum, METH_NOARGS, isalnum__doc__},
|
||
{"capitalize", (PyCFunction)string_capitalize, METH_NOARGS, capitalize__doc__},
|
||
{"count", (PyCFunction)string_count, METH_VARARGS, count__doc__},
|
||
{"endswith", (PyCFunction)string_endswith, METH_VARARGS, endswith__doc__},
|
||
{"find", (PyCFunction)string_find, METH_VARARGS, find__doc__},
|
||
{"index", (PyCFunction)string_index, METH_VARARGS, index__doc__},
|
||
{"lstrip", (PyCFunction)string_lstrip, METH_NOARGS, lstrip__doc__},
|
||
{"replace", (PyCFunction)string_replace, METH_VARARGS, replace__doc__},
|
||
{"rfind", (PyCFunction)string_rfind, METH_VARARGS, rfind__doc__},
|
||
{"rindex", (PyCFunction)string_rindex, METH_VARARGS, rindex__doc__},
|
||
{"rstrip", (PyCFunction)string_rstrip, METH_NOARGS, rstrip__doc__},
|
||
{"startswith", (PyCFunction)string_startswith, METH_VARARGS, startswith__doc__},
|
||
{"strip", (PyCFunction)string_strip, METH_NOARGS, strip__doc__},
|
||
{"swapcase", (PyCFunction)string_swapcase, METH_NOARGS, swapcase__doc__},
|
||
{"translate", (PyCFunction)string_translate, METH_VARARGS, translate__doc__},
|
||
{"title", (PyCFunction)string_title, METH_NOARGS, title__doc__},
|
||
{"ljust", (PyCFunction)string_ljust, METH_VARARGS, ljust__doc__},
|
||
{"rjust", (PyCFunction)string_rjust, METH_VARARGS, rjust__doc__},
|
||
{"center", (PyCFunction)string_center, METH_VARARGS, center__doc__},
|
||
{"encode", (PyCFunction)string_encode, METH_VARARGS, encode__doc__},
|
||
{"decode", (PyCFunction)string_decode, METH_VARARGS, decode__doc__},
|
||
{"expandtabs", (PyCFunction)string_expandtabs, METH_VARARGS, expandtabs__doc__},
|
||
{"splitlines", (PyCFunction)string_splitlines, METH_VARARGS, splitlines__doc__},
|
||
#if 0
|
||
{"zfill", (PyCFunction)string_zfill, METH_VARARGS, zfill__doc__},
|
||
#endif
|
||
{NULL, NULL} /* sentinel */
|
||
};
|
||
|
||
static PyObject *
|
||
string_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
|
||
{
|
||
PyObject *x = NULL;
|
||
static char *kwlist[] = {"object", 0};
|
||
|
||
assert(type == &PyString_Type);
|
||
if (!PyArg_ParseTupleAndKeywords(args, kwds, "|O:str", kwlist, &x))
|
||
return NULL;
|
||
if (x == NULL)
|
||
return PyString_FromString("");
|
||
return PyObject_Str(x);
|
||
}
|
||
|
||
static char string_doc[] =
|
||
"str(object) -> string\n\
|
||
\n\
|
||
Return a nice string representation of the object.\n\
|
||
If the argument is a string, the return value is the same object.";
|
||
|
||
PyTypeObject PyString_Type = {
|
||
PyObject_HEAD_INIT(&PyType_Type)
|
||
0,
|
||
"str",
|
||
sizeof(PyStringObject),
|
||
sizeof(char),
|
||
(destructor)string_dealloc, /* tp_dealloc */
|
||
(printfunc)string_print, /* tp_print */
|
||
0, /* tp_getattr */
|
||
0, /* tp_setattr */
|
||
0, /* tp_compare */
|
||
(reprfunc)string_repr, /* tp_repr */
|
||
0, /* tp_as_number */
|
||
&string_as_sequence, /* tp_as_sequence */
|
||
0, /* tp_as_mapping */
|
||
(hashfunc)string_hash, /* tp_hash */
|
||
0, /* tp_call */
|
||
(reprfunc)string_str, /* tp_str */
|
||
PyObject_GenericGetAttr, /* tp_getattro */
|
||
0, /* tp_setattro */
|
||
&string_as_buffer, /* tp_as_buffer */
|
||
Py_TPFLAGS_DEFAULT, /* tp_flags */
|
||
string_doc, /* tp_doc */
|
||
0, /* tp_traverse */
|
||
0, /* tp_clear */
|
||
(richcmpfunc)string_richcompare, /* tp_richcompare */
|
||
0, /* tp_weaklistoffset */
|
||
0, /* tp_iter */
|
||
0, /* tp_iternext */
|
||
string_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 */
|
||
string_new, /* tp_new */
|
||
};
|
||
|
||
void
|
||
PyString_Concat(register PyObject **pv, register PyObject *w)
|
||
{
|
||
register PyObject *v;
|
||
if (*pv == NULL)
|
||
return;
|
||
if (w == NULL || !PyString_Check(*pv)) {
|
||
Py_DECREF(*pv);
|
||
*pv = NULL;
|
||
return;
|
||
}
|
||
v = string_concat((PyStringObject *) *pv, w);
|
||
Py_DECREF(*pv);
|
||
*pv = v;
|
||
}
|
||
|
||
void
|
||
PyString_ConcatAndDel(register PyObject **pv, register PyObject *w)
|
||
{
|
||
PyString_Concat(pv, w);
|
||
Py_XDECREF(w);
|
||
}
|
||
|
||
|
||
/* The following function breaks the notion that strings are immutable:
|
||
it changes the size of a string. We get away with this only if there
|
||
is only one module referencing the object. You can also think of it
|
||
as creating a new string object and destroying the old one, only
|
||
more efficiently. In any case, don't use this if the string may
|
||
already be known to some other part of the code... */
|
||
|
||
int
|
||
_PyString_Resize(PyObject **pv, int newsize)
|
||
{
|
||
register PyObject *v;
|
||
register PyStringObject *sv;
|
||
v = *pv;
|
||
if (!PyString_Check(v) || v->ob_refcnt != 1) {
|
||
*pv = 0;
|
||
Py_DECREF(v);
|
||
PyErr_BadInternalCall();
|
||
return -1;
|
||
}
|
||
/* XXX UNREF/NEWREF interface should be more symmetrical */
|
||
#ifdef Py_REF_DEBUG
|
||
--_Py_RefTotal;
|
||
#endif
|
||
_Py_ForgetReference(v);
|
||
*pv = (PyObject *)
|
||
PyObject_REALLOC((char *)v,
|
||
sizeof(PyStringObject) + newsize * sizeof(char));
|
||
if (*pv == NULL) {
|
||
PyObject_DEL(v);
|
||
PyErr_NoMemory();
|
||
return -1;
|
||
}
|
||
_Py_NewReference(*pv);
|
||
sv = (PyStringObject *) *pv;
|
||
sv->ob_size = newsize;
|
||
sv->ob_sval[newsize] = '\0';
|
||
return 0;
|
||
}
|
||
|
||
/* Helpers for formatstring */
|
||
|
||
static PyObject *
|
||
getnextarg(PyObject *args, int arglen, int *p_argidx)
|
||
{
|
||
int argidx = *p_argidx;
|
||
if (argidx < arglen) {
|
||
(*p_argidx)++;
|
||
if (arglen < 0)
|
||
return args;
|
||
else
|
||
return PyTuple_GetItem(args, argidx);
|
||
}
|
||
PyErr_SetString(PyExc_TypeError,
|
||
"not enough arguments for format string");
|
||
return NULL;
|
||
}
|
||
|
||
/* Format codes
|
||
* F_LJUST '-'
|
||
* F_SIGN '+'
|
||
* F_BLANK ' '
|
||
* F_ALT '#'
|
||
* F_ZERO '0'
|
||
*/
|
||
#define F_LJUST (1<<0)
|
||
#define F_SIGN (1<<1)
|
||
#define F_BLANK (1<<2)
|
||
#define F_ALT (1<<3)
|
||
#define F_ZERO (1<<4)
|
||
|
||
static int
|
||
formatfloat(char *buf, size_t buflen, int flags,
|
||
int prec, int type, PyObject *v)
|
||
{
|
||
/* fmt = '%#.' + `prec` + `type`
|
||
worst case length = 3 + 10 (len of INT_MAX) + 1 = 14 (use 20)*/
|
||
char fmt[20];
|
||
double x;
|
||
if (!PyArg_Parse(v, "d;float argument required", &x))
|
||
return -1;
|
||
if (prec < 0)
|
||
prec = 6;
|
||
if (type == 'f' && fabs(x)/1e25 >= 1e25)
|
||
type = 'g';
|
||
sprintf(fmt, "%%%s.%d%c", (flags&F_ALT) ? "#" : "", prec, type);
|
||
/* worst case length calc to ensure no buffer overrun:
|
||
fmt = %#.<prec>g
|
||
buf = '-' + [0-9]*prec + '.' + 'e+' + (longest exp
|
||
for any double rep.)
|
||
len = 1 + prec + 1 + 2 + 5 = 9 + prec
|
||
If prec=0 the effective precision is 1 (the leading digit is
|
||
always given), therefore increase by one to 10+prec. */
|
||
if (buflen <= (size_t)10 + (size_t)prec) {
|
||
PyErr_SetString(PyExc_OverflowError,
|
||
"formatted float is too long (precision too large?)");
|
||
return -1;
|
||
}
|
||
sprintf(buf, fmt, x);
|
||
return strlen(buf);
|
||
}
|
||
|
||
/* _PyString_FormatLong emulates the format codes d, u, o, x and X, and
|
||
* the F_ALT flag, for Python's long (unbounded) ints. It's not used for
|
||
* Python's regular ints.
|
||
* Return value: a new PyString*, or NULL if error.
|
||
* . *pbuf is set to point into it,
|
||
* *plen set to the # of chars following that.
|
||
* Caller must decref it when done using pbuf.
|
||
* The string starting at *pbuf is of the form
|
||
* "-"? ("0x" | "0X")? digit+
|
||
* "0x"/"0X" are present only for x and X conversions, with F_ALT
|
||
* set in flags. The case of hex digits will be correct,
|
||
* There will be at least prec digits, zero-filled on the left if
|
||
* necessary to get that many.
|
||
* val object to be converted
|
||
* flags bitmask of format flags; only F_ALT is looked at
|
||
* prec minimum number of digits; 0-fill on left if needed
|
||
* type a character in [duoxX]; u acts the same as d
|
||
*
|
||
* CAUTION: o, x and X conversions on regular ints can never
|
||
* produce a '-' sign, but can for Python's unbounded ints.
|
||
*/
|
||
PyObject*
|
||
_PyString_FormatLong(PyObject *val, int flags, int prec, int type,
|
||
char **pbuf, int *plen)
|
||
{
|
||
PyObject *result = NULL;
|
||
char *buf;
|
||
int i;
|
||
int sign; /* 1 if '-', else 0 */
|
||
int len; /* number of characters */
|
||
int numdigits; /* len == numnondigits + numdigits */
|
||
int numnondigits = 0;
|
||
|
||
switch (type) {
|
||
case 'd':
|
||
case 'u':
|
||
result = val->ob_type->tp_str(val);
|
||
break;
|
||
case 'o':
|
||
result = val->ob_type->tp_as_number->nb_oct(val);
|
||
break;
|
||
case 'x':
|
||
case 'X':
|
||
numnondigits = 2;
|
||
result = val->ob_type->tp_as_number->nb_hex(val);
|
||
break;
|
||
default:
|
||
assert(!"'type' not in [duoxX]");
|
||
}
|
||
if (!result)
|
||
return NULL;
|
||
|
||
/* To modify the string in-place, there can only be one reference. */
|
||
if (result->ob_refcnt != 1) {
|
||
PyErr_BadInternalCall();
|
||
return NULL;
|
||
}
|
||
buf = PyString_AsString(result);
|
||
len = PyString_Size(result);
|
||
if (buf[len-1] == 'L') {
|
||
--len;
|
||
buf[len] = '\0';
|
||
}
|
||
sign = buf[0] == '-';
|
||
numnondigits += sign;
|
||
numdigits = len - numnondigits;
|
||
assert(numdigits > 0);
|
||
|
||
/* Get rid of base marker unless F_ALT */
|
||
if ((flags & F_ALT) == 0) {
|
||
/* Need to skip 0x, 0X or 0. */
|
||
int skipped = 0;
|
||
switch (type) {
|
||
case 'o':
|
||
assert(buf[sign] == '0');
|
||
/* If 0 is only digit, leave it alone. */
|
||
if (numdigits > 1) {
|
||
skipped = 1;
|
||
--numdigits;
|
||
}
|
||
break;
|
||
case 'x':
|
||
case 'X':
|
||
assert(buf[sign] == '0');
|
||
assert(buf[sign + 1] == 'x');
|
||
skipped = 2;
|
||
numnondigits -= 2;
|
||
break;
|
||
}
|
||
if (skipped) {
|
||
buf += skipped;
|
||
len -= skipped;
|
||
if (sign)
|
||
buf[0] = '-';
|
||
}
|
||
assert(len == numnondigits + numdigits);
|
||
assert(numdigits > 0);
|
||
}
|
||
|
||
/* Fill with leading zeroes to meet minimum width. */
|
||
if (prec > numdigits) {
|
||
PyObject *r1 = PyString_FromStringAndSize(NULL,
|
||
numnondigits + prec);
|
||
char *b1;
|
||
if (!r1) {
|
||
Py_DECREF(result);
|
||
return NULL;
|
||
}
|
||
b1 = PyString_AS_STRING(r1);
|
||
for (i = 0; i < numnondigits; ++i)
|
||
*b1++ = *buf++;
|
||
for (i = 0; i < prec - numdigits; i++)
|
||
*b1++ = '0';
|
||
for (i = 0; i < numdigits; i++)
|
||
*b1++ = *buf++;
|
||
*b1 = '\0';
|
||
Py_DECREF(result);
|
||
result = r1;
|
||
buf = PyString_AS_STRING(result);
|
||
len = numnondigits + prec;
|
||
}
|
||
|
||
/* Fix up case for hex conversions. */
|
||
switch (type) {
|
||
case 'x':
|
||
/* Need to convert all upper case letters to lower case. */
|
||
for (i = 0; i < len; i++)
|
||
if (buf[i] >= 'A' && buf[i] <= 'F')
|
||
buf[i] += 'a'-'A';
|
||
break;
|
||
case 'X':
|
||
/* Need to convert 0x to 0X (and -0x to -0X). */
|
||
if (buf[sign + 1] == 'x')
|
||
buf[sign + 1] = 'X';
|
||
break;
|
||
}
|
||
*pbuf = buf;
|
||
*plen = len;
|
||
return result;
|
||
}
|
||
|
||
static int
|
||
formatint(char *buf, size_t buflen, int flags,
|
||
int prec, int type, PyObject *v)
|
||
{
|
||
/* fmt = '%#.' + `prec` + 'l' + `type`
|
||
worst case length = 3 + 19 (worst len of INT_MAX on 64-bit machine)
|
||
+ 1 + 1 = 24 */
|
||
char fmt[64]; /* plenty big enough! */
|
||
long x;
|
||
if (!PyArg_Parse(v, "l;int argument required", &x))
|
||
return -1;
|
||
if (prec < 0)
|
||
prec = 1;
|
||
sprintf(fmt, "%%%s.%dl%c", (flags&F_ALT) ? "#" : "", prec, type);
|
||
/* buf = '+'/'-'/'0'/'0x' + '[0-9]'*max(prec, len(x in octal))
|
||
worst case buf = '0x' + [0-9]*prec, where prec >= 11 */
|
||
if (buflen <= 13 || buflen <= (size_t)2 + (size_t)prec) {
|
||
PyErr_SetString(PyExc_OverflowError,
|
||
"formatted integer is too long (precision too large?)");
|
||
return -1;
|
||
}
|
||
sprintf(buf, fmt, x);
|
||
/* When converting 0 under %#x or %#X, C leaves off the base marker,
|
||
* but we want it (for consistency with other %#x conversions, and
|
||
* for consistency with Python's hex() function).
|
||
* BUG 28-Apr-2001 tim: At least two platform Cs (Metrowerks &
|
||
* Compaq Tru64) violate the std by converting 0 w/ leading 0x anyway.
|
||
* So add it only if the platform didn't already.
|
||
*/
|
||
if (x == 0 &&
|
||
(flags & F_ALT) &&
|
||
(type == 'x' || type == 'X') &&
|
||
buf[1] != (char)type) /* this last always true under std C */
|
||
{
|
||
memmove(buf+2, buf, strlen(buf) + 1);
|
||
buf[0] = '0';
|
||
buf[1] = (char)type;
|
||
}
|
||
return strlen(buf);
|
||
}
|
||
|
||
static int
|
||
formatchar(char *buf, size_t buflen, PyObject *v)
|
||
{
|
||
/* presume that the buffer is at least 2 characters long */
|
||
if (PyString_Check(v)) {
|
||
if (!PyArg_Parse(v, "c;%c requires int or char", &buf[0]))
|
||
return -1;
|
||
}
|
||
else {
|
||
if (!PyArg_Parse(v, "b;%c requires int or char", &buf[0]))
|
||
return -1;
|
||
}
|
||
buf[1] = '\0';
|
||
return 1;
|
||
}
|
||
|
||
|
||
/* fmt%(v1,v2,...) is roughly equivalent to sprintf(fmt, v1, v2, ...)
|
||
|
||
FORMATBUFLEN is the length of the buffer in which the floats, ints, &
|
||
chars are formatted. XXX This is a magic number. Each formatting
|
||
routine does bounds checking to ensure no overflow, but a better
|
||
solution may be to malloc a buffer of appropriate size for each
|
||
format. For now, the current solution is sufficient.
|
||
*/
|
||
#define FORMATBUFLEN (size_t)120
|
||
|
||
PyObject *
|
||
PyString_Format(PyObject *format, PyObject *args)
|
||
{
|
||
char *fmt, *res;
|
||
int fmtcnt, rescnt, reslen, arglen, argidx;
|
||
int args_owned = 0;
|
||
PyObject *result, *orig_args;
|
||
#ifdef Py_USING_UNICODE
|
||
PyObject *v, *w;
|
||
#endif
|
||
PyObject *dict = NULL;
|
||
if (format == NULL || !PyString_Check(format) || args == NULL) {
|
||
PyErr_BadInternalCall();
|
||
return NULL;
|
||
}
|
||
orig_args = args;
|
||
fmt = PyString_AsString(format);
|
||
fmtcnt = PyString_Size(format);
|
||
reslen = rescnt = fmtcnt + 100;
|
||
result = PyString_FromStringAndSize((char *)NULL, reslen);
|
||
if (result == NULL)
|
||
return NULL;
|
||
res = PyString_AsString(result);
|
||
if (PyTuple_Check(args)) {
|
||
arglen = PyTuple_Size(args);
|
||
argidx = 0;
|
||
}
|
||
else {
|
||
arglen = -1;
|
||
argidx = -2;
|
||
}
|
||
if (args->ob_type->tp_as_mapping)
|
||
dict = args;
|
||
while (--fmtcnt >= 0) {
|
||
if (*fmt != '%') {
|
||
if (--rescnt < 0) {
|
||
rescnt = fmtcnt + 100;
|
||
reslen += rescnt;
|
||
if (_PyString_Resize(&result, reslen) < 0)
|
||
return NULL;
|
||
res = PyString_AsString(result)
|
||
+ reslen - rescnt;
|
||
--rescnt;
|
||
}
|
||
*res++ = *fmt++;
|
||
}
|
||
else {
|
||
/* Got a format specifier */
|
||
int flags = 0;
|
||
int width = -1;
|
||
int prec = -1;
|
||
int c = '\0';
|
||
int fill;
|
||
PyObject *v = NULL;
|
||
PyObject *temp = NULL;
|
||
char *pbuf;
|
||
int sign;
|
||
int len;
|
||
char formatbuf[FORMATBUFLEN]; /* For format{float,int,char}() */
|
||
#ifdef Py_USING_UNICODE
|
||
char *fmt_start = fmt;
|
||
int argidx_start = argidx;
|
||
#endif
|
||
|
||
fmt++;
|
||
if (*fmt == '(') {
|
||
char *keystart;
|
||
int keylen;
|
||
PyObject *key;
|
||
int pcount = 1;
|
||
|
||
if (dict == NULL) {
|
||
PyErr_SetString(PyExc_TypeError,
|
||
"format requires a mapping");
|
||
goto error;
|
||
}
|
||
++fmt;
|
||
--fmtcnt;
|
||
keystart = fmt;
|
||
/* Skip over balanced parentheses */
|
||
while (pcount > 0 && --fmtcnt >= 0) {
|
||
if (*fmt == ')')
|
||
--pcount;
|
||
else if (*fmt == '(')
|
||
++pcount;
|
||
fmt++;
|
||
}
|
||
keylen = fmt - keystart - 1;
|
||
if (fmtcnt < 0 || pcount > 0) {
|
||
PyErr_SetString(PyExc_ValueError,
|
||
"incomplete format key");
|
||
goto error;
|
||
}
|
||
key = PyString_FromStringAndSize(keystart,
|
||
keylen);
|
||
if (key == NULL)
|
||
goto error;
|
||
if (args_owned) {
|
||
Py_DECREF(args);
|
||
args_owned = 0;
|
||
}
|
||
args = PyObject_GetItem(dict, key);
|
||
Py_DECREF(key);
|
||
if (args == NULL) {
|
||
goto error;
|
||
}
|
||
args_owned = 1;
|
||
arglen = -1;
|
||
argidx = -2;
|
||
}
|
||
while (--fmtcnt >= 0) {
|
||
switch (c = *fmt++) {
|
||
case '-': flags |= F_LJUST; continue;
|
||
case '+': flags |= F_SIGN; continue;
|
||
case ' ': flags |= F_BLANK; continue;
|
||
case '#': flags |= F_ALT; continue;
|
||
case '0': flags |= F_ZERO; continue;
|
||
}
|
||
break;
|
||
}
|
||
if (c == '*') {
|
||
v = getnextarg(args, arglen, &argidx);
|
||
if (v == NULL)
|
||
goto error;
|
||
if (!PyInt_Check(v)) {
|
||
PyErr_SetString(PyExc_TypeError,
|
||
"* wants int");
|
||
goto error;
|
||
}
|
||
width = PyInt_AsLong(v);
|
||
if (width < 0) {
|
||
flags |= F_LJUST;
|
||
width = -width;
|
||
}
|
||
if (--fmtcnt >= 0)
|
||
c = *fmt++;
|
||
}
|
||
else if (c >= 0 && isdigit(c)) {
|
||
width = c - '0';
|
||
while (--fmtcnt >= 0) {
|
||
c = Py_CHARMASK(*fmt++);
|
||
if (!isdigit(c))
|
||
break;
|
||
if ((width*10) / 10 != width) {
|
||
PyErr_SetString(
|
||
PyExc_ValueError,
|
||
"width too big");
|
||
goto error;
|
||
}
|
||
width = width*10 + (c - '0');
|
||
}
|
||
}
|
||
if (c == '.') {
|
||
prec = 0;
|
||
if (--fmtcnt >= 0)
|
||
c = *fmt++;
|
||
if (c == '*') {
|
||
v = getnextarg(args, arglen, &argidx);
|
||
if (v == NULL)
|
||
goto error;
|
||
if (!PyInt_Check(v)) {
|
||
PyErr_SetString(
|
||
PyExc_TypeError,
|
||
"* wants int");
|
||
goto error;
|
||
}
|
||
prec = PyInt_AsLong(v);
|
||
if (prec < 0)
|
||
prec = 0;
|
||
if (--fmtcnt >= 0)
|
||
c = *fmt++;
|
||
}
|
||
else if (c >= 0 && isdigit(c)) {
|
||
prec = c - '0';
|
||
while (--fmtcnt >= 0) {
|
||
c = Py_CHARMASK(*fmt++);
|
||
if (!isdigit(c))
|
||
break;
|
||
if ((prec*10) / 10 != prec) {
|
||
PyErr_SetString(
|
||
PyExc_ValueError,
|
||
"prec too big");
|
||
goto error;
|
||
}
|
||
prec = prec*10 + (c - '0');
|
||
}
|
||
}
|
||
} /* prec */
|
||
if (fmtcnt >= 0) {
|
||
if (c == 'h' || c == 'l' || c == 'L') {
|
||
if (--fmtcnt >= 0)
|
||
c = *fmt++;
|
||
}
|
||
}
|
||
if (fmtcnt < 0) {
|
||
PyErr_SetString(PyExc_ValueError,
|
||
"incomplete format");
|
||
goto error;
|
||
}
|
||
if (c != '%') {
|
||
v = getnextarg(args, arglen, &argidx);
|
||
if (v == NULL)
|
||
goto error;
|
||
}
|
||
sign = 0;
|
||
fill = ' ';
|
||
switch (c) {
|
||
case '%':
|
||
pbuf = "%";
|
||
len = 1;
|
||
break;
|
||
case 's':
|
||
case 'r':
|
||
#ifdef Py_USING_UNICODE
|
||
if (PyUnicode_Check(v)) {
|
||
fmt = fmt_start;
|
||
argidx = argidx_start;
|
||
goto unicode;
|
||
}
|
||
#endif
|
||
if (c == 's')
|
||
temp = PyObject_Str(v);
|
||
else
|
||
temp = PyObject_Repr(v);
|
||
if (temp == NULL)
|
||
goto error;
|
||
if (!PyString_Check(temp)) {
|
||
PyErr_SetString(PyExc_TypeError,
|
||
"%s argument has non-string str()");
|
||
goto error;
|
||
}
|
||
pbuf = PyString_AsString(temp);
|
||
len = PyString_Size(temp);
|
||
if (prec >= 0 && len > prec)
|
||
len = prec;
|
||
break;
|
||
case 'i':
|
||
case 'd':
|
||
case 'u':
|
||
case 'o':
|
||
case 'x':
|
||
case 'X':
|
||
if (c == 'i')
|
||
c = 'd';
|
||
if (PyLong_Check(v)) {
|
||
temp = _PyString_FormatLong(v, flags,
|
||
prec, c, &pbuf, &len);
|
||
if (!temp)
|
||
goto error;
|
||
/* unbounded ints can always produce
|
||
a sign character! */
|
||
sign = 1;
|
||
}
|
||
else {
|
||
pbuf = formatbuf;
|
||
len = formatint(pbuf, sizeof(formatbuf),
|
||
flags, prec, c, v);
|
||
if (len < 0)
|
||
goto error;
|
||
/* only d conversion is signed */
|
||
sign = c == 'd';
|
||
}
|
||
if (flags & F_ZERO)
|
||
fill = '0';
|
||
break;
|
||
case 'e':
|
||
case 'E':
|
||
case 'f':
|
||
case 'g':
|
||
case 'G':
|
||
pbuf = formatbuf;
|
||
len = formatfloat(pbuf, sizeof(formatbuf), flags, prec, c, v);
|
||
if (len < 0)
|
||
goto error;
|
||
sign = 1;
|
||
if (flags & F_ZERO)
|
||
fill = '0';
|
||
break;
|
||
case 'c':
|
||
pbuf = formatbuf;
|
||
len = formatchar(pbuf, sizeof(formatbuf), v);
|
||
if (len < 0)
|
||
goto error;
|
||
break;
|
||
default:
|
||
PyErr_Format(PyExc_ValueError,
|
||
"unsupported format character '%c' (0x%x) "
|
||
"at index %i",
|
||
c, c, fmt - 1 - PyString_AsString(format));
|
||
goto error;
|
||
}
|
||
if (sign) {
|
||
if (*pbuf == '-' || *pbuf == '+') {
|
||
sign = *pbuf++;
|
||
len--;
|
||
}
|
||
else if (flags & F_SIGN)
|
||
sign = '+';
|
||
else if (flags & F_BLANK)
|
||
sign = ' ';
|
||
else
|
||
sign = 0;
|
||
}
|
||
if (width < len)
|
||
width = len;
|
||
if (rescnt < width + (sign != 0)) {
|
||
reslen -= rescnt;
|
||
rescnt = width + fmtcnt + 100;
|
||
reslen += rescnt;
|
||
if (_PyString_Resize(&result, reslen) < 0)
|
||
return NULL;
|
||
res = PyString_AsString(result)
|
||
+ reslen - rescnt;
|
||
}
|
||
if (sign) {
|
||
if (fill != ' ')
|
||
*res++ = sign;
|
||
rescnt--;
|
||
if (width > len)
|
||
width--;
|
||
}
|
||
if ((flags & F_ALT) && (c == 'x' || c == 'X')) {
|
||
assert(pbuf[0] == '0');
|
||
assert(pbuf[1] == c);
|
||
if (fill != ' ') {
|
||
*res++ = *pbuf++;
|
||
*res++ = *pbuf++;
|
||
}
|
||
rescnt -= 2;
|
||
width -= 2;
|
||
if (width < 0)
|
||
width = 0;
|
||
len -= 2;
|
||
}
|
||
if (width > len && !(flags & F_LJUST)) {
|
||
do {
|
||
--rescnt;
|
||
*res++ = fill;
|
||
} while (--width > len);
|
||
}
|
||
if (fill == ' ') {
|
||
if (sign)
|
||
*res++ = sign;
|
||
if ((flags & F_ALT) &&
|
||
(c == 'x' || c == 'X')) {
|
||
assert(pbuf[0] == '0');
|
||
assert(pbuf[1] == c);
|
||
*res++ = *pbuf++;
|
||
*res++ = *pbuf++;
|
||
}
|
||
}
|
||
memcpy(res, pbuf, len);
|
||
res += len;
|
||
rescnt -= len;
|
||
while (--width >= len) {
|
||
--rescnt;
|
||
*res++ = ' ';
|
||
}
|
||
if (dict && (argidx < arglen) && c != '%') {
|
||
PyErr_SetString(PyExc_TypeError,
|
||
"not all arguments converted");
|
||
goto error;
|
||
}
|
||
Py_XDECREF(temp);
|
||
} /* '%' */
|
||
} /* until end */
|
||
if (argidx < arglen && !dict) {
|
||
PyErr_SetString(PyExc_TypeError,
|
||
"not all arguments converted");
|
||
goto error;
|
||
}
|
||
if (args_owned) {
|
||
Py_DECREF(args);
|
||
}
|
||
_PyString_Resize(&result, reslen - rescnt);
|
||
return result;
|
||
|
||
#ifdef Py_USING_UNICODE
|
||
unicode:
|
||
if (args_owned) {
|
||
Py_DECREF(args);
|
||
args_owned = 0;
|
||
}
|
||
/* Fiddle args right (remove the first argidx arguments) */
|
||
if (PyTuple_Check(orig_args) && argidx > 0) {
|
||
PyObject *v;
|
||
int n = PyTuple_GET_SIZE(orig_args) - argidx;
|
||
v = PyTuple_New(n);
|
||
if (v == NULL)
|
||
goto error;
|
||
while (--n >= 0) {
|
||
PyObject *w = PyTuple_GET_ITEM(orig_args, n + argidx);
|
||
Py_INCREF(w);
|
||
PyTuple_SET_ITEM(v, n, w);
|
||
}
|
||
args = v;
|
||
} else {
|
||
Py_INCREF(orig_args);
|
||
args = orig_args;
|
||
}
|
||
args_owned = 1;
|
||
/* Take what we have of the result and let the Unicode formatting
|
||
function format the rest of the input. */
|
||
rescnt = res - PyString_AS_STRING(result);
|
||
if (_PyString_Resize(&result, rescnt))
|
||
goto error;
|
||
fmtcnt = PyString_GET_SIZE(format) - \
|
||
(fmt - PyString_AS_STRING(format));
|
||
format = PyUnicode_Decode(fmt, fmtcnt, NULL, NULL);
|
||
if (format == NULL)
|
||
goto error;
|
||
v = PyUnicode_Format(format, args);
|
||
Py_DECREF(format);
|
||
if (v == NULL)
|
||
goto error;
|
||
/* Paste what we have (result) to what the Unicode formatting
|
||
function returned (v) and return the result (or error) */
|
||
w = PyUnicode_Concat(result, v);
|
||
Py_DECREF(result);
|
||
Py_DECREF(v);
|
||
Py_DECREF(args);
|
||
return w;
|
||
#endif /* Py_USING_UNICODE */
|
||
|
||
error:
|
||
Py_DECREF(result);
|
||
if (args_owned) {
|
||
Py_DECREF(args);
|
||
}
|
||
return NULL;
|
||
}
|
||
|
||
|
||
#ifdef INTERN_STRINGS
|
||
|
||
/* This dictionary will leak at PyString_Fini() time. That's acceptable
|
||
* because PyString_Fini() specifically frees interned strings that are
|
||
* only referenced by this dictionary. The CVS log entry for revision 2.45
|
||
* says:
|
||
*
|
||
* Change the Fini function to only remove otherwise unreferenced
|
||
* strings from the interned table. There are references in
|
||
* hard-to-find static variables all over the interpreter, and it's not
|
||
* worth trying to get rid of all those; but "uninterning" isn't fair
|
||
* either and may cause subtle failures later -- so we have to keep them
|
||
* in the interned table.
|
||
*/
|
||
static PyObject *interned;
|
||
|
||
void
|
||
PyString_InternInPlace(PyObject **p)
|
||
{
|
||
register PyStringObject *s = (PyStringObject *)(*p);
|
||
PyObject *t;
|
||
if (s == NULL || !PyString_Check(s))
|
||
Py_FatalError("PyString_InternInPlace: strings only please!");
|
||
if ((t = s->ob_sinterned) != NULL) {
|
||
if (t == (PyObject *)s)
|
||
return;
|
||
Py_INCREF(t);
|
||
*p = t;
|
||
Py_DECREF(s);
|
||
return;
|
||
}
|
||
if (interned == NULL) {
|
||
interned = PyDict_New();
|
||
if (interned == NULL)
|
||
return;
|
||
}
|
||
if ((t = PyDict_GetItem(interned, (PyObject *)s)) != NULL) {
|
||
Py_INCREF(t);
|
||
*p = s->ob_sinterned = t;
|
||
Py_DECREF(s);
|
||
return;
|
||
}
|
||
t = (PyObject *)s;
|
||
if (PyDict_SetItem(interned, t, t) == 0) {
|
||
s->ob_sinterned = t;
|
||
return;
|
||
}
|
||
PyErr_Clear();
|
||
}
|
||
|
||
|
||
PyObject *
|
||
PyString_InternFromString(const char *cp)
|
||
{
|
||
PyObject *s = PyString_FromString(cp);
|
||
if (s == NULL)
|
||
return NULL;
|
||
PyString_InternInPlace(&s);
|
||
return s;
|
||
}
|
||
|
||
#endif
|
||
|
||
void
|
||
PyString_Fini(void)
|
||
{
|
||
int i;
|
||
for (i = 0; i < UCHAR_MAX + 1; i++) {
|
||
Py_XDECREF(characters[i]);
|
||
characters[i] = NULL;
|
||
}
|
||
#ifndef DONT_SHARE_SHORT_STRINGS
|
||
Py_XDECREF(nullstring);
|
||
nullstring = NULL;
|
||
#endif
|
||
#ifdef INTERN_STRINGS
|
||
if (interned) {
|
||
int pos, changed;
|
||
PyObject *key, *value;
|
||
do {
|
||
changed = 0;
|
||
pos = 0;
|
||
while (PyDict_Next(interned, &pos, &key, &value)) {
|
||
if (key->ob_refcnt == 2 && key == value) {
|
||
PyDict_DelItem(interned, key);
|
||
changed = 1;
|
||
}
|
||
}
|
||
} while (changed);
|
||
}
|
||
#endif
|
||
}
|
||
|
||
#ifdef INTERN_STRINGS
|
||
void _Py_ReleaseInternedStrings(void)
|
||
{
|
||
if (interned) {
|
||
fprintf(stderr, "releasing interned strings\n");
|
||
PyDict_Clear(interned);
|
||
Py_DECREF(interned);
|
||
interned = NULL;
|
||
}
|
||
}
|
||
#endif /* INTERN_STRINGS */
|