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  r76308 | mark.dickinson | 2009-11-15 16:18:58 +0000 (Sun, 15 Nov 2009) | 3 lines

  Issue #7228:  Add '%lld' and '%llu' support to PyFormat_FromString,
  PyFormat_FromStringV and PyErr_Format.
........
This commit is contained in:
Mark Dickinson 2009-11-16 17:00:11 +00:00
parent 260bd3e557
commit 6ce4a9a9f2
9 changed files with 299 additions and 24 deletions
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16
Doc/c-api/exceptions.rst
View File

@ -155,6 +155,8 @@ in various ways. There is a separate error indicator for each thread.
.. % The descriptions for %zd and %zu are wrong, but the truth is complicated
.. % because not all compilers support the %z width modifier -- we fake it
.. % when necessary via interpolating PY_FORMAT_SIZE_T.
.. % Similar comments apply to the %ll width modifier and
.. % PY_FORMAT_LONG_LONG.
+-------------------+---------------+--------------------------------+
| Format Characters | Type | Comment |
@ -176,6 +178,12 @@ in various ways. There is a separate error indicator for each thread.
| :attr:`%lu` | unsigned long | Exactly equivalent to |
| | | ``printf("%lu")``. |
+-------------------+---------------+--------------------------------+
| :attr:`%lld` | long long | Exactly equivalent to |
| | | ``printf("%lld")``. |
+-------------------+---------------+--------------------------------+
| :attr:`%llu` | unsigned | Exactly equivalent to |
| | long long | ``printf("%llu")``. |
+-------------------+---------------+--------------------------------+
| :attr:`%zd` | Py_ssize_t | Exactly equivalent to |
| | | ``printf("%zd")``. |
+-------------------+---------------+--------------------------------+
@ -203,6 +211,14 @@ in various ways. There is a separate error indicator for each thread.
An unrecognized format character causes all the rest of the format string to be
copied as-is to the result string, and any extra arguments discarded.
.. note::
The `"%lld"` and `"%llu"` format specifiers are only available
when `HAVE_LONG_LONG` is defined.
.. versionchanged:: 3.2
Support for `"%lld"` and `"%llu"` added.
.. cfunction:: void PyErr_SetNone(PyObject *type)

18
Doc/c-api/unicode.rst
View File

@ -232,9 +232,12 @@ APIs:
types and must correspond exactly to the format characters in the *format*
string. The following format characters are allowed:
.. % This should be exactly the same as the table in PyErr_Format.
.. % The descriptions for %zd and %zu are wrong, but the truth is complicated
.. % because not all compilers support the %z width modifier -- we fake it
.. % when necessary via interpolating PY_FORMAT_SIZE_T.
.. % Similar comments apply to the %ll width modifier and
.. % PY_FORMAT_LONG_LONG.
+-------------------+---------------------+--------------------------------+
| Format Characters | Type | Comment |
@ -256,6 +259,12 @@ APIs:
| :attr:`%lu` | unsigned long | Exactly equivalent to |
| | | ``printf("%lu")``. |
+-------------------+---------------------+--------------------------------+
| :attr:`%lld` | long long | Exactly equivalent to |
| | | ``printf("%lld")``. |
+-------------------+---------------------+--------------------------------+
| :attr:`%llu` | unsigned long long | Exactly equivalent to |
| | | ``printf("%llu")``. |
+-------------------+---------------------+--------------------------------+
| :attr:`%zd` | Py_ssize_t | Exactly equivalent to |
| | | ``printf("%zd")``. |
+-------------------+---------------------+--------------------------------+
@ -301,6 +310,15 @@ APIs:
An unrecognized format character causes all the rest of the format string to be
copied as-is to the result string, and any extra arguments discarded.
.. note::
The `"%lld"` and `"%llu"` format specifiers are only available
when `HAVE_LONG_LONG` is defined.
.. versionchanged:: 3.2
Support for `"%lld"` and `"%llu"` added.
.. cfunction:: PyObject* PyUnicode_FromFormatV(const char *format, va_list vargs)

16
Include/pyport.h
View File

@ -219,6 +219,22 @@ typedef Py_intptr_t Py_ssize_t;
# endif
#endif
/* PY_FORMAT_LONG_LONG is analogous to PY_FORMAT_SIZE_T above, but for
* the long long type instead of the size_t type. It's only available
* when HAVE_LONG_LONG is defined. The "high level" Python format
* functions listed above will interpret "lld" or "llu" correctly on
* all platforms.
*/
#ifdef HAVE_LONG_LONG
# ifndef PY_FORMAT_LONG_LONG
# if defined(MS_WIN64) || defined(MS_WINDOWS)
# define PY_FORMAT_LONG_LONG "I64"
# else
# error "This platform's pyconfig.h needs to define PY_FORMAT_LONG_LONG"
# endif
# endif
#endif
/* Py_LOCAL can be used instead of static to get the fastest possible calling
* convention for functions that are local to a given module.
*

3
Misc/NEWS
View File

@ -110,6 +110,9 @@ Core and Builtins
C-API
-----
- Issue #Add '%lld' and '%llu' support to PyString_FromFormat(V)
and PyErr_Format, on machines with HAVE_LONG_LONG defined.
- Issue #6151: Made PyDescr_COMMON conform to standard C (like PyObject_HEAD
in PEP 3123). The PyDescr_TYPE and PyDescr_NAME macros should be
should used for accessing the d_type and d_name members of structures

6
Modules/_testcapimodule.c
View File

@ -1037,6 +1037,12 @@ test_string_from_format(PyObject *self, PyObject *args)
CHECK_1_FORMAT("%lu", unsigned long);
CHECK_1_FORMAT("%zu", size_t);
/* "%lld" and "%llu" support added in Python 2.7. */
#ifdef HAVE_LONG_LONG
CHECK_1_FORMAT("%llu", unsigned PY_LONG_LONG);
CHECK_1_FORMAT("%lld", PY_LONG_LONG);
#endif
Py_RETURN_NONE;
Fail:

113
Objects/unicodeobject.c
View File

@ -667,7 +667,8 @@ PyObject *PyUnicode_FromWideChar(register const wchar_t *w,
#undef CONVERT_WCHAR_TO_SURROGATES
static void
makefmt(char *fmt, int longflag, int size_tflag, int zeropad, int width, int precision, char c)
makefmt(char *fmt, int longflag, int longlongflag, int size_tflag,
int zeropad, int width, int precision, char c)
{
*fmt++ = '%';
if (width) {
@ -679,6 +680,19 @@ makefmt(char *fmt, int longflag, int size_tflag, int zeropad, int width, int pre
fmt += sprintf(fmt, ".%d", precision);
if (longflag)
*fmt++ = 'l';
else if (longlongflag) {
/* longlongflag should only ever be nonzero on machines with
HAVE_LONG_LONG defined */
#ifdef HAVE_LONG_LONG
char *f = PY_FORMAT_LONG_LONG;
while (*f)
*fmt++ = *f++;
#else
/* we shouldn't ever get here */
assert(0);
*fmt++ = 'l';
#endif
}
else if (size_tflag) {
char *f = PY_FORMAT_SIZE_T;
while (*f)
@ -690,6 +704,16 @@ makefmt(char *fmt, int longflag, int size_tflag, int zeropad, int width, int pre
#define appendstring(string) {for (copy = string;*copy;) *s++ = *copy++;}
/* size of fixed-size buffer for formatting single arguments */
#define ITEM_BUFFER_LEN 21
/* maximum number of characters required for output of %ld. 21 characters
allows for 64-bit integers (in decimal) and an optional sign. */
#define MAX_LONG_CHARS 21
/* maximum number of characters required for output of %lld.
We need at most ceil(log10(256)*SIZEOF_LONG_LONG) digits,
plus 1 for the sign. 53/22 is an upper bound for log10(256). */
#define MAX_LONG_LONG_CHARS (2 + (SIZEOF_LONG_LONG*53-1) / 22)
PyObject *
PyUnicode_FromFormatV(const char *format, va_list vargs)
{
@ -705,13 +729,13 @@ PyUnicode_FromFormatV(const char *format, va_list vargs)
Py_UNICODE *s;
PyObject *string;
/* used by sprintf */
char buffer[21];
char buffer[ITEM_BUFFER_LEN+1];
/* use abuffer instead of buffer, if we need more space
* (which can happen if there's a format specifier with width). */
char *abuffer = NULL;
char *realbuffer;
Py_ssize_t abuffersize = 0;
char fmt[60]; /* should be enough for %0width.precisionld */
char fmt[61]; /* should be enough for %0width.precisionlld */
const char *copy;
#ifdef VA_LIST_IS_ARRAY
@ -754,6 +778,9 @@ PyUnicode_FromFormatV(const char *format, va_list vargs)
/* step 3: figure out how large a buffer we need */
for (f = format; *f; f++) {
if (*f == '%') {
#ifdef HAVE_LONG_LONG
int longlongflag = 0;
#endif
const char* p = f;
width = 0;
while (ISDIGIT((unsigned)*f))
@ -764,9 +791,21 @@ PyUnicode_FromFormatV(const char *format, va_list vargs)
/* skip the 'l' or 'z' in {%ld, %zd, %lu, %zu} since
* they don't affect the amount of space we reserve.
*/
if ((*f == 'l' || *f == 'z') &&
(f[1] == 'd' || f[1] == 'u'))
if (*f == 'l') {
if (f[1] == 'd' || f[1] == 'u') {
++f;
}
#ifdef HAVE_LONG_LONG
else if (f[1] == 'l' &&
(f[2] == 'd' || f[2] == 'u')) {
longlongflag = 1;
f += 2;
}
#endif
}
else if (*f == 'z' && (f[1] == 'd' || f[1] == 'u')) {
++f;
}
switch (*f) {
case 'c':
@ -777,14 +816,21 @@ PyUnicode_FromFormatV(const char *format, va_list vargs)
break;
case 'd': case 'u': case 'i': case 'x':
(void) va_arg(count, int);
/* 20 bytes is enough to hold a 64-bit
integer. Decimal takes the most space.
This isn't enough for octal.
If a width is specified we need more
(which we allocate later). */
if (width < 20)
width = 20;
#ifdef HAVE_LONG_LONG
if (longlongflag) {
if (width < MAX_LONG_LONG_CHARS)
width = MAX_LONG_LONG_CHARS;
}
else
#endif
/* MAX_LONG_CHARS is enough to hold a 64-bit integer,
including sign. Decimal takes the most space. This
isn't enough for octal. If a width is specified we
need more (which we allocate later). */
if (width < MAX_LONG_CHARS)
width = MAX_LONG_CHARS;
n += width;
/* XXX should allow for large precision here too. */
if (abuffersize < width)
abuffersize = width;
break;
@ -881,8 +927,9 @@ PyUnicode_FromFormatV(const char *format, va_list vargs)
n++;
}
expand:
if (abuffersize > 20) {
abuffer = PyObject_Malloc(abuffersize);
if (abuffersize > ITEM_BUFFER_LEN) {
/* add 1 for sprintf's trailing null byte */
abuffer = PyObject_Malloc(abuffersize + 1);
if (!abuffer) {
PyErr_NoMemory();
goto fail;
@ -906,6 +953,7 @@ PyUnicode_FromFormatV(const char *format, va_list vargs)
if (*f == '%') {
const char* p = f++;
int longflag = 0;
int longlongflag = 0;
int size_tflag = 0;
zeropad = (*f == '0');
/* parse the width.precision part */
@ -918,11 +966,19 @@ PyUnicode_FromFormatV(const char *format, va_list vargs)
while (ISDIGIT((unsigned)*f))
precision = (precision*10) + *f++ - '0';
}
/* handle the long flag, but only for %ld and %lu.
others can be added when necessary. */
if (*f == 'l' && (f[1] == 'd' || f[1] == 'u')) {
longflag = 1;
++f;
/* Handle %ld, %lu, %lld and %llu. */
if (*f == 'l') {
if (f[1] == 'd' || f[1] == 'u') {
longflag = 1;
++f;
}
#ifdef HAVE_LONG_LONG
else if (f[1] == 'l' &&
(f[2] == 'd' || f[2] == 'u')) {
longlongflag = 1;
f += 2;
}
#endif
}
/* handle the size_t flag. */
if (*f == 'z' && (f[1] == 'd' || f[1] == 'u')) {
@ -935,9 +991,14 @@ PyUnicode_FromFormatV(const char *format, va_list vargs)
*s++ = va_arg(vargs, int);
break;
case 'd':
makefmt(fmt, longflag, size_tflag, zeropad, width, precision, 'd');
makefmt(fmt, longflag, longlongflag, size_tflag, zeropad,
width, precision, 'd');
if (longflag)
sprintf(realbuffer, fmt, va_arg(vargs, long));
#ifdef HAVE_LONG_LONG
else if (longlongflag)
sprintf(realbuffer, fmt, va_arg(vargs, PY_LONG_LONG));
#endif
else if (size_tflag)
sprintf(realbuffer, fmt, va_arg(vargs, Py_ssize_t));
else
@ -945,9 +1006,15 @@ PyUnicode_FromFormatV(const char *format, va_list vargs)
appendstring(realbuffer);
break;
case 'u':
makefmt(fmt, longflag, size_tflag, zeropad, width, precision, 'u');
makefmt(fmt, longflag, longlongflag, size_tflag, zeropad,
width, precision, 'u');
if (longflag)
sprintf(realbuffer, fmt, va_arg(vargs, unsigned long));
#ifdef HAVE_LONG_LONG
else if (longlongflag)
sprintf(realbuffer, fmt, va_arg(vargs,
unsigned PY_LONG_LONG));
#endif
else if (size_tflag)
sprintf(realbuffer, fmt, va_arg(vargs, size_t));
else
@ -955,12 +1022,12 @@ PyUnicode_FromFormatV(const char *format, va_list vargs)
appendstring(realbuffer);
break;
case 'i':
makefmt(fmt, 0, 0, zeropad, width, precision, 'i');
makefmt(fmt, 0, 0, 0, zeropad, width, precision, 'i');
sprintf(realbuffer, fmt, va_arg(vargs, int));
appendstring(realbuffer);
break;
case 'x':
makefmt(fmt, 0, 0, zeropad, width, precision, 'x');
makefmt(fmt, 0, 0, 0, zeropad, width, precision, 'x');
sprintf(realbuffer, fmt, va_arg(vargs, int));
appendstring(realbuffer);
break;

100
configure vendored
View File

@ -1,5 +1,5 @@
#! /bin/sh
# From configure.in Revision: 76030 .
# From configure.in Revision: 76301 .
# Guess values for system-dependent variables and create Makefiles.
# Generated by GNU Autoconf 2.61 for python 3.2.
#
@ -26314,6 +26314,104 @@ else
echo "${ECHO_T}no" >&6; }
fi
if test "$have_long_long" = yes
then
{ echo "$as_me:$LINENO: checking for %lld and %llu printf() format support" >&5
echo $ECHO_N "checking for %lld and %llu printf() format support... $ECHO_C" >&6; }
if test "${ac_cv_have_long_long_format+set}" = set; then
echo $ECHO_N "(cached) $ECHO_C" >&6
else
if test "$cross_compiling" = yes; then
ac_cv_have_long_long_format=no
else
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h. */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h. */
#include <stdio.h>
#include <stddef.h>
#include <string.h>
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
int main()
{
char buffer[256];
if (sprintf(buffer, "%lld", (long long)123) < 0)
return 1;
if (strcmp(buffer, "123"))
return 1;
if (sprintf(buffer, "%lld", (long long)-123) < 0)
return 1;
if (strcmp(buffer, "-123"))
return 1;
if (sprintf(buffer, "%llu", (unsigned long long)123) < 0)
return 1;
if (strcmp(buffer, "123"))
return 1;
return 0;
}
_ACEOF
rm -f conftest$ac_exeext
if { (ac_try="$ac_link"
case "(($ac_try" in
*\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
*) ac_try_echo=$ac_try;;
esac
eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
(eval "$ac_link") 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); } && { ac_try='./conftest$ac_exeext'
{ (case "(($ac_try" in
*\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
*) ac_try_echo=$ac_try;;
esac
eval "echo \"\$as_me:$LINENO: $ac_try_echo\"") >&5
(eval "$ac_try") 2>&5
ac_status=$?
echo "$as_me:$LINENO: \$? = $ac_status" >&5
(exit $ac_status); }; }; then
ac_cv_have_long_long_format=yes
else
echo "$as_me: program exited with status $ac_status" >&5
echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5
( exit $ac_status )
ac_cv_have_long_long_format=no
fi
rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
fi
fi
{ echo "$as_me:$LINENO: result: $ac_cv_have_long_long_format" >&5
echo "${ECHO_T}$ac_cv_have_long_long_format" >&6; }
fi
if test $ac_cv_have_long_long_format = yes
then
cat >>confdefs.h <<\_ACEOF
#define PY_FORMAT_LONG_LONG "ll"
_ACEOF
fi
{ echo "$as_me:$LINENO: checking for %zd printf() format support" >&5
echo $ECHO_N "checking for %zd printf() format support... $ECHO_C" >&6; }
if test "${ac_cv_have_size_t_format+set}" = set; then

48
configure.in
View File

@ -3806,6 +3806,54 @@ else
AC_MSG_RESULT(no)
fi
if test "$have_long_long" = yes
then
AC_MSG_CHECKING(for %lld and %llu printf() format support)
AC_CACHE_VAL(ac_cv_have_long_long_format,
AC_TRY_RUN([[
#include <stdio.h>
#include <stddef.h>
#include <string.h>
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
int main()
{
char buffer[256];
if (sprintf(buffer, "%lld", (long long)123) < 0)
return 1;
if (strcmp(buffer, "123"))
return 1;
if (sprintf(buffer, "%lld", (long long)-123) < 0)
return 1;
if (strcmp(buffer, "-123"))
return 1;
if (sprintf(buffer, "%llu", (unsigned long long)123) < 0)
return 1;
if (strcmp(buffer, "123"))
return 1;
return 0;
}
]], ac_cv_have_long_long_format=yes,
ac_cv_have_long_long_format=no,
ac_cv_have_long_long_format=no)
)
AC_MSG_RESULT($ac_cv_have_long_long_format)
fi
if test $ac_cv_have_long_long_format = yes
then
AC_DEFINE(PY_FORMAT_LONG_LONG, "ll",
[Define to printf format modifier for long long type])
fi
AC_MSG_CHECKING(for %zd printf() format support)
AC_CACHE_VAL(ac_cv_have_size_t_format,
AC_TRY_RUN([[

3
pyconfig.h.in
View File

@ -910,6 +910,9 @@
/* Define as the preferred size in bits of long digits */
#undef PYLONG_BITS_IN_DIGIT
/* Define to printf format modifier for long long type */
#undef PY_FORMAT_LONG_LONG
/* Define to printf format modifier for Py_ssize_t */
#undef PY_FORMAT_SIZE_T