mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-08-03 08:34:29 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 6

Added ',' thousands grouping to int.__format__. See PEP 378.

Browse source 
This is incomplete, but I want to get some version into the next alpha. I am still working on:
Documentation.
More tests.
Implement for floats.

In addition, there's an existing bug with 'n' formatting that carries forward to thousands grouping (issue 5515).
This commit is contained in:
Eric Smith 2009-04-03 14:45:06 +00:00
parent f8c8b6d3ea
commit a3b1ac8dca
10 changed files with 190 additions and 88 deletions
Download patch file Download diff file Expand all files Collapse all files

35
Objects/stringlib/formatter.h
View file

@ -120,6 +120,7 @@ typedef struct {
int alternate;
STRINGLIB_CHAR sign;
Py_ssize_t width;
int thousands_separators;
Py_ssize_t precision;
STRINGLIB_CHAR type;
} InternalFormatSpec;
@ -149,6 +150,7 @@ parse_internal_render_format_spec(STRINGLIB_CHAR *format_spec,
format->alternate = 0;
format->sign = '\0';
format->width = -1;
format->thousands_separators = 0;
format->precision = -1;
format->type = default_type;
@ -201,6 +203,12 @@ parse_internal_render_format_spec(STRINGLIB_CHAR *format_spec,
format->width = -1;
}
/* Comma signifies add thousands separators */
if (end-ptr && ptr[0] == ',') {
format->thousands_separators = 1;
++ptr;
}
/* Parse field precision */
if (end-ptr && ptr[0] == '.') {
++ptr;
@ -230,6 +238,11 @@ parse_internal_render_format_spec(STRINGLIB_CHAR *format_spec,
++ptr;
}
if (format->type == 'n' && format->thousands_separators) {
PyErr_Format(PyExc_ValueError, "Cannot specify ',' with 'n'.");
return 0;
}
return 1;
}
@ -630,8 +643,13 @@ format_int_or_long_internal(PyObject *value, const InternalFormatSpec *format,
if (format->type == 'n')
/* Compute how many additional chars we need to allocate
to hold the thousands grouping. */
STRINGLIB_GROUPING(NULL, n_digits, n_digits,
STRINGLIB_GROUPING_LOCALE(NULL, n_digits, n_digits,
0, &n_grouping_chars, 0);
if (format->thousands_separators)
/* Compute how many additional chars we need to allocate
to hold the thousands grouping. */
STRINGLIB_GROUPING(NULL, n_digits, n_digits,
0, &n_grouping_chars, 0, "\3", ",");
/* Calculate the widths of the various leading and trailing parts */
calc_number_widths(&spec, sign, n_prefix, n_digits + n_grouping_chars,
@ -670,11 +688,22 @@ format_int_or_long_internal(PyObject *value, const InternalFormatSpec *format,
reserved enough space. */
STRINGLIB_CHAR *pstart = p + n_leading_chars;
#ifndef NDEBUG
int r =
int r;
#endif
STRINGLIB_GROUPING(pstart, n_digits, n_digits,
if (format->type == 'n')
#ifndef NDEBUG
r =
#endif
STRINGLIB_GROUPING_LOCALE(pstart, n_digits, n_digits,
spec.n_total+n_grouping_chars-n_leading_chars,
NULL, 0);
else
#ifndef NDEBUG
r =
STRINGLIB_GROUPING(pstart, n_digits, n_digits,
spec.n_total+n_grouping_chars-n_leading_chars,
NULL, 0, "\3", ",");
#endif
assert(r);
}