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use full unicode mappings for upper/lower/title case (#12736) 

Also broaden the category of characters that count as lowercase/uppercase.
This commit is contained in:
Benjamin Peterson 2012-01-11 18:17:06 -05:00
parent 9007f72db0
commit b2bf01d824
11 changed files with 4634 additions and 1757 deletions
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9
Doc/c-api/unicode.rst
View File

@ -318,16 +318,25 @@ These APIs can be used for fast direct character conversions:
Return the character *ch* converted to lower case.
.. deprecated:: 3.3
This function uses simple case mappings.
.. c:function:: Py_UNICODE Py_UNICODE_TOUPPER(Py_UNICODE ch)
Return the character *ch* converted to upper case.
.. deprecated:: 3.3
This function uses simple case mappings.
.. c:function:: Py_UNICODE Py_UNICODE_TOTITLE(Py_UNICODE ch)
Return the character *ch* converted to title case.
.. deprecated:: 3.3
This function uses simple case mappings.
.. c:function:: int Py_UNICODE_TODECIMAL(Py_UNICODE ch)

3
Doc/library/stdtypes.rst
View File

@ -1360,7 +1360,8 @@ functions based on regular expressions.
.. method:: str.swapcase()
Return a copy of the string with uppercase characters converted to lowercase and
vice versa.
vice versa. Note that it is not necessarily true that
``s.swapcase().swapcase() == s``.
.. method:: str.title()

23
Include/unicodeobject.h
View File

@ -2008,6 +2008,29 @@ PyAPI_FUNC(Py_UCS4) _PyUnicode_ToTitlecase(
Py_UCS4 ch /* Unicode character */
);
PyAPI_FUNC(int) _PyUnicode_ToLowerFull(
Py_UCS4 ch, /* Unicode character */
Py_UCS4 *res
);
PyAPI_FUNC(int) _PyUnicode_ToTitleFull(
Py_UCS4 ch, /* Unicode character */
Py_UCS4 *res
);
PyAPI_FUNC(int) _PyUnicode_ToUpperFull(
Py_UCS4 ch, /* Unicode character */
Py_UCS4 *res
);
PyAPI_FUNC(int) _PyUnicode_IsCaseIgnorable(
const Py_UCS4 ch /* Unicode character */
);
PyAPI_FUNC(int) _PyUnicode_IsCased(
const Py_UCS4 ch /* Unicode character */
);
PyAPI_FUNC(int) _PyUnicode_ToDecimalDigit(
Py_UCS4 ch /* Unicode character */
);

2
Lib/test/string_tests.py
View File

@ -669,7 +669,7 @@ class CommonTest(BaseTest):
# check that titlecased chars are lowered correctly
# \u1ffc is the titlecased char
self.checkequal('\u1ffc\u1ff3\u1ff3\u1ff3',
self.checkequal('\u03a9\u0399\u1ff3\u1ff3\u1ff3',
'\u1ff3\u1ff3\u1ffc\u1ffc', 'capitalize')
# check with cased non-letter chars
self.checkequal('\u24c5\u24e8\u24e3\u24d7\u24de\u24dd',

44
Lib/test/test_unicode.py
View File

@ -369,6 +369,8 @@ class UnicodeTest(string_tests.CommonTest,
def test_islower(self):
string_tests.MixinStrUnicodeUserStringTest.test_islower(self)
self.checkequalnofix(False, '\u1FFc', 'islower')
self.assertFalse('\u2167'.islower())
self.assertTrue('\u2177'.islower())
# non-BMP, uppercase
self.assertFalse('\U00010401'.islower())
self.assertFalse('\U00010427'.islower())
@ -383,6 +385,8 @@ class UnicodeTest(string_tests.CommonTest,
string_tests.MixinStrUnicodeUserStringTest.test_isupper(self)
if not sys.platform.startswith('java'):
self.checkequalnofix(False, '\u1FFc', 'isupper')
self.assertTrue('\u2167'.isupper())
self.assertFalse('\u2177'.isupper())
# non-BMP, uppercase
self.assertTrue('\U00010401'.isupper())
self.assertTrue('\U00010427'.isupper())
@ -548,6 +552,18 @@ class UnicodeTest(string_tests.CommonTest,
'\U0001044F\U0001044F')
self.assertEqual('X\U00010427x\U0001044F'.lower(),
'x\U0001044Fx\U0001044F')
self.assertEqual('fi'.lower(), 'fi')
self.assertEqual('\u0130'.lower(), '\u0069\u0307')
# Special case for GREEK CAPITAL LETTER SIGMA U+03A3
self.assertEqual('\u03a3'.lower(), '\u03c3')
self.assertEqual('\u0345\u03a3'.lower(), '\u0345\u03c3')
self.assertEqual('A\u0345\u03a3'.lower(), 'a\u0345\u03c2')
self.assertEqual('A\u0345\u03a3a'.lower(), 'a\u0345\u03c3a')
self.assertEqual('A\u0345\u03a3'.lower(), 'a\u0345\u03c2')
self.assertEqual('A\u03a3\u0345'.lower(), 'a\u03c2\u0345')
self.assertEqual('\u03a3\u0345 '.lower(), '\u03c3\u0345 ')
self.assertEqual('\U0008fffe'.lower(), '\U0008fffe')
self.assertEqual('\u2177'.lower(), '\u2177')
def test_upper(self):
string_tests.CommonTest.test_upper(self)
@ -558,6 +574,13 @@ class UnicodeTest(string_tests.CommonTest,
'\U00010427\U00010427')
self.assertEqual('X\U00010427x\U0001044F'.upper(),
'X\U00010427X\U00010427')
self.assertEqual('fi'.upper(), 'FI')
self.assertEqual('\u0130'.upper(), '\u0130')
self.assertEqual('\u03a3'.upper(), '\u03a3')
self.assertEqual('ß'.upper(), 'SS')
self.assertEqual('\u1fd2'.upper(), '\u0399\u0308\u0300')
self.assertEqual('\U0008fffe'.upper(), '\U0008fffe')
self.assertEqual('\u2177'.upper(), '\u2167')
def test_capitalize(self):
string_tests.CommonTest.test_capitalize(self)
@ -570,6 +593,11 @@ class UnicodeTest(string_tests.CommonTest,
'\U00010427\U0001044F')
self.assertEqual('X\U00010427x\U0001044F'.capitalize(),
'X\U0001044Fx\U0001044F')
self.assertEqual('h\u0130'.capitalize(), 'H\u0069\u0307')
exp = '\u0399\u0308\u0300\u0069\u0307'
self.assertEqual('\u1fd2\u0130'.capitalize(), exp)
self.assertEqual('finnish'.capitalize(), 'FInnish')
self.assertEqual('A\u0345\u03a3'.capitalize(), 'A\u0345\u03c2')
def test_title(self):
string_tests.MixinStrUnicodeUserStringTest.test_title(self)
@ -584,6 +612,9 @@ class UnicodeTest(string_tests.CommonTest,
'\U00010427\U0001044F \U00010427\U0001044F')
self.assertEqual('X\U00010427x\U0001044F X\U00010427x\U0001044F'.title(),
'X\U0001044Fx\U0001044F X\U0001044Fx\U0001044F')
self.assertEqual('fiNNISH'.title(), 'Finnish')
self.assertEqual('A\u03a3 \u1fa1xy'.title(), 'A\u03c2 \u1fa9xy')
self.assertEqual('A\u03a3A'.title(), 'A\u03c3a')
def test_swapcase(self):
string_tests.CommonTest.test_swapcase(self)
@ -597,6 +628,19 @@ class UnicodeTest(string_tests.CommonTest,
'\U00010427\U0001044F')
self.assertEqual('X\U00010427x\U0001044F'.swapcase(),
'x\U0001044FX\U00010427')
self.assertEqual('fi'.swapcase(), 'FI')
self.assertEqual('\u0130'.swapcase(), '\u0069\u0307')
# Special case for GREEK CAPITAL LETTER SIGMA U+03A3
self.assertEqual('\u03a3'.swapcase(), '\u03c3')
self.assertEqual('\u0345\u03a3'.swapcase(), '\u0399\u03c3')
self.assertEqual('A\u0345\u03a3'.swapcase(), 'a\u0399\u03c2')
self.assertEqual('A\u0345\u03a3a'.swapcase(), 'a\u0399\u03c3A')
self.assertEqual('A\u0345\u03a3'.swapcase(), 'a\u0399\u03c2')
self.assertEqual('A\u03a3\u0345'.swapcase(), 'a\u03c2\u0399')
self.assertEqual('\u03a3\u0345 '.swapcase(), '\u03c3\u0399 ')
self.assertEqual('\u03a3'.swapcase(), '\u03c3')
self.assertEqual('ß'.swapcase(), 'SS')
self.assertEqual('\u1fd2'.swapcase(), '\u0399\u0308\u0300')
def test_contains(self):
# Testing Unicode contains method

2
Lib/test/test_unicodedata.py
View File

@ -21,7 +21,7 @@ errors = 'surrogatepass'
class UnicodeMethodsTest(unittest.TestCase):
# update this, if the database changes
expectedchecksum = '21b90f1aed00081b81ca7942b22196af090015a0'
expectedchecksum = 'df0b3ca6785a070b21f837b227dbdbdff3c2e921'
def test_method_checksum(self):
h = hashlib.sha1()

2
Misc/NEWS
View File

@ -10,6 +10,8 @@ What's New in Python 3.3 Alpha 1?
Core and Builtins
-----------------
- Issue #12736: Use full unicode case mappings for upper, lower, and title case.
- Issue #12760: Add a create mode to open(). Patch by David Townshend.
- Issue #13738: Simplify implementation of bytes.lower() and bytes.upper().

97
Objects/unicodectype.c
View File

@ -21,8 +21,10 @@
#define XID_START_MASK 0x100
#define XID_CONTINUE_MASK 0x200
#define PRINTABLE_MASK 0x400
#define NODELTA_MASK 0x800
#define NUMERIC_MASK 0x1000
#define NUMERIC_MASK 0x800
#define CASE_IGNORABLE_MASK 0x1000
#define CASED_MASK 0x2000
#define EXTENDED_CASE_MASK 0x4000
typedef struct {
const Py_UCS4 upper;
@ -57,15 +59,8 @@ gettyperecord(Py_UCS4 code)
Py_UCS4 _PyUnicode_ToTitlecase(register Py_UCS4 ch)
{
const _PyUnicode_TypeRecord *ctype = gettyperecord(ch);
int delta = ctype->title;
if (ctype->flags & NODELTA_MASK)
return delta;
if (delta >= 32768)
delta -= 65536;
return ch + delta;
return ctype->title ? ctype->title : ch;
}
/* Returns 1 for Unicode characters having the category 'Lt', 0
@ -188,12 +183,10 @@ int _PyUnicode_IsUppercase(Py_UCS4 ch)
Py_UCS4 _PyUnicode_ToUppercase(Py_UCS4 ch)
{
const _PyUnicode_TypeRecord *ctype = gettyperecord(ch);
int delta = ctype->upper;
if (ctype->flags & NODELTA_MASK)
return delta;
if (delta >= 32768)
delta -= 65536;
return ch + delta;
if (ctype->flags & EXTENDED_CASE_MASK)
return _PyUnicode_ExtendedCase[ctype->upper & 0xFFFFFF];
return ctype->upper ? ctype->upper : ch;
}
/* Returns the lowercase Unicode characters corresponding to ch or just
@ -202,12 +195,72 @@ Py_UCS4 _PyUnicode_ToUppercase(Py_UCS4 ch)
Py_UCS4 _PyUnicode_ToLowercase(Py_UCS4 ch)
{
const _PyUnicode_TypeRecord *ctype = gettyperecord(ch);
int delta = ctype->lower;
if (ctype->flags & NODELTA_MASK)
return delta;
if (delta >= 32768)
delta -= 65536;
return ch + delta;
if (ctype->flags & EXTENDED_CASE_MASK)
return _PyUnicode_ExtendedCase[ctype->lower & 0xFFFFFF];
return ctype->lower ? ctype->lower : ch;
}
int _PyUnicode_ToLowerFull(Py_UCS4 ch, Py_UCS4 *res)
{
const _PyUnicode_TypeRecord *ctype = gettyperecord(ch);
if (ctype->flags & EXTENDED_CASE_MASK) {
int index = ctype->lower & 0xFFFFFF;
int n = ctype->lower >> 24;
int i;
for (i = 0; i < n; i++)
res[i] = _PyUnicode_ExtendedCase[index + i];
return n;
}
res[0] = ctype->lower ? ctype->lower : ch;
return 1;
}
int _PyUnicode_ToTitleFull(Py_UCS4 ch, Py_UCS4 *res)
{
const _PyUnicode_TypeRecord *ctype = gettyperecord(ch);
if (ctype->flags & EXTENDED_CASE_MASK) {
int index = ctype->title & 0xFFFFFF;
int n = ctype->title >> 24;
int i;
for (i = 0; i < n; i++)
res[i] = _PyUnicode_ExtendedCase[index + i];
return n;
}
res[0] = ctype->title ? ctype->title : ch;
return 1;
}
int _PyUnicode_ToUpperFull(Py_UCS4 ch, Py_UCS4 *res)
{
const _PyUnicode_TypeRecord *ctype = gettyperecord(ch);
if (ctype->flags & EXTENDED_CASE_MASK) {
int index = ctype->upper & 0xFFFFFF;
int n = ctype->upper >> 24;
int i;
for (i = 0; i < n; i++)
res[i] = _PyUnicode_ExtendedCase[index + i];
return n;
}
res[0] = ctype->upper ? ctype->upper : ch;
return 1;
}
int _PyUnicode_IsCased(Py_UCS4 ch)
{
const _PyUnicode_TypeRecord *ctype = gettyperecord(ch);
return (ctype->flags & CASED_MASK) != 0;
}
int _PyUnicode_IsCaseIgnorable(Py_UCS4 ch)
{
const _PyUnicode_TypeRecord *ctype = gettyperecord(ch);
return (ctype->flags & CASE_IGNORABLE_MASK) != 0;
}
/* Returns 1 for Unicode characters having the category 'Ll', 'Lu', 'Lt',

357
Objects/unicodeobject.c
View File

@ -41,6 +41,7 @@ OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#define PY_SSIZE_T_CLEAN
#include "Python.h"
#include "ucnhash.h"
#include "bytes_methods.h"
#ifdef MS_WINDOWS
#include <windows.h>
@ -9428,188 +9429,222 @@ fixup(PyObject *self,
return v;
}
static Py_UCS4
fixupper(PyObject *self)
static PyObject *
ascii_upper_or_lower(PyObject *self, int lower)
{
/* No need to call PyUnicode_READY(self) because this function is only
called as a callback from fixup() which does it already. */
const Py_ssize_t len = PyUnicode_GET_LENGTH(self);
const int kind = PyUnicode_KIND(self);
void *data = PyUnicode_DATA(self);
int touched = 0;
Py_UCS4 maxchar = 0;
Py_ssize_t i;
Py_ssize_t len = PyUnicode_GET_LENGTH(self);
char *resdata, *data = PyUnicode_DATA(self);
PyObject *res;
for (i = 0; i < len; ++i) {
const Py_UCS4 ch = PyUnicode_READ(kind, data, i);
const Py_UCS4 up = Py_UNICODE_TOUPPER(ch);
if (up != ch) {
if (up > maxchar)
maxchar = up;
PyUnicode_WRITE(kind, data, i, up);
touched = 1;
}
else if (ch > maxchar)
maxchar = ch;
}
if (touched)
return maxchar;
res = PyUnicode_New(len, 127);
if (res == NULL)
return NULL;
resdata = PyUnicode_DATA(res);
if (lower)
_Py_bytes_lower(resdata, data, len);
else
return 0;
_Py_bytes_upper(resdata, data, len);
return res;
}
static Py_UCS4
fixlower(PyObject *self)
handle_capital_sigma(int kind, void *data, Py_ssize_t length, Py_ssize_t i)
{
/* No need to call PyUnicode_READY(self) because fixup() which does it. */
const Py_ssize_t len = PyUnicode_GET_LENGTH(self);
const int kind = PyUnicode_KIND(self);
void *data = PyUnicode_DATA(self);
int touched = 0;
Py_UCS4 maxchar = 0;
Py_ssize_t i;
Py_ssize_t j;
int final_sigma;
Py_UCS4 c;
/* U+03A3 is in the Final_Sigma context when, it is found like this:
for(i = 0; i < len; ++i) {
const Py_UCS4 ch = PyUnicode_READ(kind, data, i);
const Py_UCS4 lo = Py_UNICODE_TOLOWER(ch);
if (lo != ch) {
if (lo > maxchar)
maxchar = lo;
PyUnicode_WRITE(kind, data, i, lo);
touched = 1;
}
else if (ch > maxchar)
maxchar = ch;
\p{cased}\p{case-ignorable}*U+03A3!(\p{case-ignorable}*\p{cased})
where ! is a negation and \p{xxx} is a character with property xxx.
*/
for (j = i - 1; j >= 0; j--) {
c = PyUnicode_READ(kind, data, j);
if (!_PyUnicode_IsCaseIgnorable(c))
break;
}
if (touched)
return maxchar;
else
return 0;
final_sigma = j >= 0 && _PyUnicode_IsCased(c);
if (final_sigma) {
for (j = i + 1; j < length; j++) {
c = PyUnicode_READ(kind, data, j);
if (!_PyUnicode_IsCaseIgnorable(c))
break;
}
final_sigma = j == length || !_PyUnicode_IsCased(c);
}
return (final_sigma) ? 0x3C2 : 0x3C3;
}
static Py_UCS4
fixswapcase(PyObject *self)
static int
lower_ucs4(int kind, void *data, Py_ssize_t length, Py_ssize_t i,
Py_UCS4 c, Py_UCS4 *mapped)
{
/* No need to call PyUnicode_READY(self) because fixup() which does it. */
const Py_ssize_t len = PyUnicode_GET_LENGTH(self);
const int kind = PyUnicode_KIND(self);
void *data = PyUnicode_DATA(self);
int touched = 0;
Py_UCS4 maxchar = 0;
Py_ssize_t i;
for(i = 0; i < len; ++i) {
const Py_UCS4 ch = PyUnicode_READ(kind, data, i);
Py_UCS4 nu = 0;
if (Py_UNICODE_ISUPPER(ch))
nu = Py_UNICODE_TOLOWER(ch);
else if (Py_UNICODE_ISLOWER(ch))
nu = Py_UNICODE_TOUPPER(ch);
if (nu != 0) {
if (nu > maxchar)
maxchar = nu;
PyUnicode_WRITE(kind, data, i, nu);
touched = 1;
}
else if (ch > maxchar)
maxchar = ch;
/* Obscure special case. */
if (c == 0x3A3) {
mapped[0] = handle_capital_sigma(kind, data, length, i);
return 1;
}
if (touched)
return maxchar;
else
return 0;
return _PyUnicode_ToLowerFull(c, mapped);
}
static Py_UCS4
fixcapitalize(PyObject *self)
static Py_ssize_t
do_capitalize(int kind, void *data, Py_ssize_t length, Py_UCS4 *res, Py_UCS4 *maxchar)
{
/* No need to call PyUnicode_READY(self) because fixup() which does it. */
const Py_ssize_t len = PyUnicode_GET_LENGTH(self);
const int kind = PyUnicode_KIND(self);
void *data = PyUnicode_DATA(self);
int touched = 0;
Py_UCS4 maxchar = 0;
Py_ssize_t i = 0;
Py_UCS4 ch;
Py_ssize_t i, k = 0;
int n_res, j;
Py_UCS4 c, mapped[3];
if (len == 0)
return 0;
ch = PyUnicode_READ(kind, data, i);
if (!Py_UNICODE_ISUPPER(ch)) {
maxchar = Py_UNICODE_TOUPPER(ch);
PyUnicode_WRITE(kind, data, i, maxchar);
touched = 1;
c = PyUnicode_READ(kind, data, 0);
n_res = _PyUnicode_ToUpperFull(c, mapped);
for (j = 0; j < n_res; j++) {
if (mapped[j] > *maxchar)
*maxchar = mapped[j];
res[k++] = mapped[j];
}
++i;
for(; i < len; ++i) {
ch = PyUnicode_READ(kind, data, i);
if (!Py_UNICODE_ISLOWER(ch)) {
const Py_UCS4 lo = Py_UNICODE_TOLOWER(ch);
if (lo > maxchar)
maxchar = lo;
PyUnicode_WRITE(kind, data, i, lo);
touched = 1;
for (i = 1; i < length; i++) {
c = PyUnicode_READ(kind, data, i);
n_res = lower_ucs4(kind, data, length, i, c, mapped);
for (j = 0; j < n_res; j++) {
if (mapped[j] > *maxchar)
*maxchar = mapped[j];
res[k++] = mapped[j];
}
else if (ch > maxchar)
maxchar = ch;
}
if (touched)
return maxchar;
else
return 0;
return k;
}
static Py_UCS4
fixtitle(PyObject *self)
static Py_ssize_t
do_swapcase(int kind, void *data, Py_ssize_t length, Py_UCS4 *res, Py_UCS4 *maxchar) {
Py_ssize_t i, k = 0;
for (i = 0; i < length; i++) {
Py_UCS4 c = PyUnicode_READ(kind, data, i), mapped[3];
int n_res, j;
if (Py_UNICODE_ISUPPER(c)) {
n_res = lower_ucs4(kind, data, length, i, c, mapped);
}
else if (Py_UNICODE_ISLOWER(c)) {
n_res = _PyUnicode_ToUpperFull(c, mapped);
}
else {
n_res = 1;
mapped[0] = c;
}
for (j = 0; j < n_res; j++) {
if (mapped[j] > *maxchar)
*maxchar = mapped[j];
res[k++] = mapped[j];
}
}
return k;
}
static Py_ssize_t
do_upper_or_lower(int kind, void *data, Py_ssize_t length, Py_UCS4 *res,
Py_UCS4 *maxchar, int lower)
{
/* No need to call PyUnicode_READY(self) because fixup() which does it. */
const Py_ssize_t len = PyUnicode_GET_LENGTH(self);
const int kind = PyUnicode_KIND(self);
void *data = PyUnicode_DATA(self);
Py_UCS4 maxchar = 0;
Py_ssize_t i = 0;
Py_ssize_t i, k = 0;
for (i = 0; i < length; i++) {
Py_UCS4 c = PyUnicode_READ(kind, data, i), mapped[3];
int n_res, j;
if (lower)
n_res = lower_ucs4(kind, data, length, i, c, mapped);
else
n_res = _PyUnicode_ToUpperFull(c, mapped);
for (j = 0; j < n_res; j++) {
if (mapped[j] > *maxchar)
*maxchar = mapped[j];
res[k++] = mapped[j];
}
}
return k;
}
static Py_ssize_t
do_upper(int kind, void *data, Py_ssize_t length, Py_UCS4 *res, Py_UCS4 *maxchar)
{
return do_upper_or_lower(kind, data, length, res, maxchar, 0);
}
static Py_ssize_t
do_lower(int kind, void *data, Py_ssize_t length, Py_UCS4 *res, Py_UCS4 *maxchar)
{
return do_upper_or_lower(kind, data, length, res, maxchar, 1);
}
static PyObject *
case_operation(PyObject *self,
Py_ssize_t (*perform)(int, void *, Py_ssize_t, Py_UCS4 *, Py_UCS4 *))
{
PyObject *res = NULL;
Py_ssize_t length, newlength = 0;
int kind, outkind;
void *data, *outdata;
Py_UCS4 maxchar = 0, *tmp, *tmpend;
if (PyUnicode_READY(self) == -1)
return NULL;
kind = PyUnicode_KIND(self);
data = PyUnicode_DATA(self);
length = PyUnicode_GET_LENGTH(self);
tmp = PyMem_MALLOC(sizeof(Py_UCS4) * 3 * length);
if (tmp == NULL)
return PyErr_NoMemory();
newlength = perform(kind, data, length, tmp, &maxchar);
res = PyUnicode_New(newlength, maxchar);
if (res == NULL)
goto leave;
tmpend = tmp + newlength;
outdata = PyUnicode_DATA(res);
outkind = PyUnicode_KIND(res);
switch (outkind) {
case PyUnicode_1BYTE_KIND:
_PyUnicode_CONVERT_BYTES(Py_UCS4, Py_UCS1, tmp, tmpend, outdata);
break;
case PyUnicode_2BYTE_KIND:
_PyUnicode_CONVERT_BYTES(Py_UCS4, Py_UCS2, tmp, tmpend, outdata);
break;
case PyUnicode_4BYTE_KIND:
memcpy(outdata, tmp, sizeof(Py_UCS4) * newlength);
break;
default:
assert(0);
break;
}
leave:
PyMem_FREE(tmp);
return res;
}
static Py_ssize_t
do_title(int kind, void *data, Py_ssize_t length, Py_UCS4 *res, Py_UCS4 *maxchar)
{
Py_ssize_t i, k = 0;
int previous_is_cased;
/* Shortcut for single character strings */
if (len == 1) {
const Py_UCS4 ch = PyUnicode_READ(kind, data, i);
const Py_UCS4 ti = Py_UNICODE_TOTITLE(ch);
if (ti != ch) {
PyUnicode_WRITE(kind, data, i, ti);
return ti;
}
else
return 0;
}
previous_is_cased = 0;
for(; i < len; ++i) {
const Py_UCS4 ch = PyUnicode_READ(kind, data, i);
Py_UCS4 nu;
for (i = 0; i < length; i++) {
const Py_UCS4 c = PyUnicode_READ(kind, data, i);
Py_UCS4 mapped[3];
int n_res, j;
if (previous_is_cased)
nu = Py_UNICODE_TOLOWER(ch);
n_res = lower_ucs4(kind, data, length, i, c, mapped);
else
nu = Py_UNICODE_TOTITLE(ch);
n_res = _PyUnicode_ToTitleFull(c, mapped);
if (nu > maxchar)
maxchar = nu;
PyUnicode_WRITE(kind, data, i, nu);
for (j = 0; j < n_res; j++) {
if (mapped[j] > *maxchar)
*maxchar = mapped[j];
res[k++] = mapped[j];
}
if (Py_UNICODE_ISLOWER(ch) ||
Py_UNICODE_ISUPPER(ch) ||
Py_UNICODE_ISTITLE(ch))
previous_is_cased = 1;
else
previous_is_cased = 0;
previous_is_cased = _PyUnicode_IsCased(c);
}
return maxchar;
return k;
}
PyObject *
@ -10445,7 +10480,7 @@ characters, all remaining cased characters have lower case.");
static PyObject*
unicode_title(PyObject *self)
{
return fixup(self, fixtitle);
return case_operation(self, do_title);
}
PyDoc_STRVAR(capitalize__doc__,
@ -10457,7 +10492,11 @@ have upper case and the rest lower case.");
static PyObject*
unicode_capitalize(PyObject *self)
{
return fixup(self, fixcapitalize);
if (PyUnicode_READY(self) == -1)
return NULL;
if (PyUnicode_GET_LENGTH(self) == 0)
return unicode_result_unchanged(self);
return case_operation(self, do_capitalize);
}
#if 0
@ -11715,7 +11754,11 @@ Return a copy of the string S converted to lowercase.");
static PyObject*
unicode_lower(PyObject *self)
{
return fixup(self, fixlower);
if (PyUnicode_READY(self) == -1)
return NULL;
if (PyUnicode_IS_ASCII(self))
return ascii_upper_or_lower(self, 1);
return case_operation(self, do_lower);
}
#define LEFTSTRIP 0
@ -12604,7 +12647,7 @@ and vice versa.");
static PyObject*
unicode_swapcase(PyObject *self)
{
return fixup(self, fixswapcase);
return case_operation(self, do_swapcase);
}
PyDoc_STRVAR(maketrans__doc__,
@ -12750,7 +12793,11 @@ Return a copy of S converted to uppercase.");
static PyObject*
unicode_upper(PyObject *self)
{
return fixup(self, fixupper);
if (PyUnicode_READY(self) == -1)
return NULL;
if (PyUnicode_IS_ASCII(self))
return ascii_upper_or_lower(self, 0);
return case_operation(self, do_upper);
}
PyDoc_STRVAR(zfill__doc__,

5751
Objects/unicodetype_db.h
View File

File diff suppressed because it is too large Load Diff

101
Tools/unicode/makeunicodedata.py
View File

@ -22,6 +22,7 @@
# 2006-03-10 mvl update to Unicode 4.1; add UCD 3.2 delta
# 2008-06-11 gb add PRINTABLE_MASK for Atsuo Ishimoto's ascii() patch
# 2011-10-21 ezio add support for name aliases and named sequences
# 2012-01 benjamin add full case mappings
#
# written by Fredrik Lundh (fredrik@pythonware.com)
#
@ -47,6 +48,7 @@ DERIVEDNORMALIZATION_PROPS = "DerivedNormalizationProps%s.txt"
LINE_BREAK = "LineBreak%s.txt"
NAME_ALIASES = "NameAliases%s.txt"
NAMED_SEQUENCES = "NamedSequences%s.txt"
SPECIAL_CASING = "SpecialCasing%s.txt"
# Private Use Areas -- in planes 1, 15, 16
PUA_1 = range(0xE000, 0xF900)
@ -84,8 +86,10 @@ UPPER_MASK = 0x80
XID_START_MASK = 0x100
XID_CONTINUE_MASK = 0x200
PRINTABLE_MASK = 0x400
NODELTA_MASK = 0x800
NUMERIC_MASK = 0x1000
NUMERIC_MASK = 0x800
CASE_IGNORABLE_MASK = 0x1000
CASED_MASK = 0x2000
EXTENDED_CASE_MASK = 0x4000
# these ranges need to match unicodedata.c:is_unified_ideograph
cjk_ranges = [
@ -384,6 +388,7 @@ def makeunicodetype(unicode, trace):
numeric = {}
spaces = []
linebreaks = []
extra_casing = []
for char in unicode.chars:
record = unicode.table[char]
@ -396,7 +401,7 @@ def makeunicodetype(unicode, trace):
delta = True
if category in ["Lm", "Lt", "Lu", "Ll", "Lo"]:
flags |= ALPHA_MASK
if category == "Ll":
if "Lowercase" in properties:
flags |= LOWER_MASK
if 'Line_Break' in properties or bidirectional == "B":
flags |= LINEBREAK_MASK
@ -406,7 +411,7 @@ def makeunicodetype(unicode, trace):
spaces.append(char)
if category == "Lt":
flags |= TITLE_MASK
if category == "Lu":
if "Uppercase" in properties:
flags |= UPPER_MASK
if char == ord(" ") or category[0] not in ("C", "Z"):
flags |= PRINTABLE_MASK
@ -414,35 +419,41 @@ def makeunicodetype(unicode, trace):
flags |= XID_START_MASK
if "XID_Continue" in properties:
flags |= XID_CONTINUE_MASK
# use delta predictor for upper/lower/title if it fits
if record[12]:
upper = int(record[12], 16)
if "Cased" in properties:
flags |= CASED_MASK
if "Case_Ignorable" in properties:
flags |= CASE_IGNORABLE_MASK
sc = unicode.special_casing.get(char)
if sc is None:
if record[12]:
upper = int(record[12], 16)
else:
upper = char
if record[13]:
lower = int(record[13], 16)
else:
lower = char
if record[14]:
title = int(record[14], 16)
else:
title = upper
if upper == lower == title:
upper = lower = title = 0
else:
upper = char
if record[13]:
lower = int(record[13], 16)
else:
lower = char
if record[14]:
title = int(record[14], 16)
else:
# UCD.html says that a missing title char means that
# it defaults to the uppercase character, not to the
# character itself. Apparently, in the current UCD (5.x)
# this feature is never used
title = upper
upper_d = upper - char
lower_d = lower - char
title_d = title - char
if -32768 <= upper_d <= 32767 and \
-32768 <= lower_d <= 32767 and \
-32768 <= title_d <= 32767:
# use deltas
upper = upper_d & 0xffff
lower = lower_d & 0xffff
title = title_d & 0xffff
else:
flags |= NODELTA_MASK
# This happens when some character maps to more than one
# character in uppercase, lowercase, or titlecase. The extra
# characters are stored in a different array.
flags |= EXTENDED_CASE_MASK
lower = len(extra_casing) | (len(sc[0]) << 24)
extra_casing.extend(sc[0])
upper = len(extra_casing) | (len(sc[2]) << 24)
extra_casing.extend(sc[2])
# Title is probably equal to upper.
if sc[1] == sc[2]:
title = upper
else:
title = len(extra_casing) | (len(sc[1]) << 24)
extra_casing.extend(sc[1])
# decimal digit, integer digit
decimal = 0
if record[6]:
@ -469,6 +480,7 @@ def makeunicodetype(unicode, trace):
print(sum(map(len, numeric.values())), "numeric code points")
print(len(spaces), "whitespace code points")
print(len(linebreaks), "linebreak code points")
print(len(extra_casing), "extended case array")
print("--- Writing", FILE, "...")
@ -482,6 +494,14 @@ def makeunicodetype(unicode, trace):
print("};", file=fp)
print(file=fp)
print("/* extended case mappings */", file=fp)
print(file=fp)
print("const Py_UCS4 _PyUnicode_ExtendedCase[] = {", file=fp)
for c in extra_casing:
print(" %d," % c, file=fp)
print("};", file=fp)
print(file=fp)
# split decomposition index table
index1, index2, shift = splitbins(index, trace)
@ -1070,6 +1090,23 @@ class UnicodeData:
# Patch the numeric field
if table[i] is not None:
table[i][8] = value
sc = self.special_casing = {}
with open_data(SPECIAL_CASING, version) as file:
for s in file:
s = s[:-1].split('#', 1)[0]
if not s:
continue
data = s.split("; ")
if data[4]:
# We ignore all conditionals (since they depend on
# languages) except for one, which is hardcoded. See
# handle_capital_sigma in unicodeobject.c.
continue
c = int(data[0], 16)
lower = [int(char, 16) for char in data[1].split()]
title = [int(char, 16) for char in data[2].split()]
upper = [int(char, 16) for char in data[3].split()]
sc[c] = (lower, title, upper)
def uselatin1(self):
# restrict character range to ISO Latin 1