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Issue #7330: Implement width and precision (ex: "%5.3s") for the format string
of PyUnicode_FromFormat() function, original patch written by Ysj Ray.
This commit is contained in:
Victor Stinner
parent
9b5d4d8cef
commit
8cecc8c262
4 changed files with 294 additions and 96 deletions
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@ -2007,9 +2007,13 @@ class UnicodeTest(string_tests.CommonTest,
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for arg in args)
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return _PyUnicode_FromFormat(format, *cargs)
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def check_format(expected, format, *args):
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text = PyUnicode_FromFormat(format, *args)
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self.assertEqual(expected, text)
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# ascii format, non-ascii argument
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text = PyUnicode_FromFormat(b'ascii\x7f=%U', 'unicode\xe9')
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self.assertEqual(text, 'ascii\x7f=unicode\xe9')
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check_format('ascii\x7f=unicode\xe9',
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b'ascii\x7f=%U', 'unicode\xe9')
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# non-ascii format, ascii argument: ensure that PyUnicode_FromFormatV()
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# raises an error
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@ -2019,83 +2023,200 @@ class UnicodeTest(string_tests.CommonTest,
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PyUnicode_FromFormat, b'unicode\xe9=%s', 'ascii')
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# test "%c"
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self.assertEqual(PyUnicode_FromFormat(b'%c', c_int(0xabcd)), '\uabcd')
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self.assertEqual(PyUnicode_FromFormat(b'%c', c_int(0x10ffff)), '\U0010ffff')
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check_format('\uabcd',
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b'%c', c_int(0xabcd))
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check_format('\U0010ffff',
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b'%c', c_int(0x10ffff))
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# test "%"
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self.assertEqual(PyUnicode_FromFormat(b'%'), '%')
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self.assertEqual(PyUnicode_FromFormat(b'%%'), '%')
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self.assertEqual(PyUnicode_FromFormat(b'%%s'), '%s')
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self.assertEqual(PyUnicode_FromFormat(b'[%%]'), '[%]')
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self.assertEqual(PyUnicode_FromFormat(b'%%%s', b'abc'), '%abc')
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check_format('%',
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b'%')
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check_format('%',
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b'%%')
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check_format('%s',
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b'%%s')
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check_format('[%]',
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b'[%%]')
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check_format('%abc',
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b'%%%s', b'abc')
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# truncated string
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check_format('abc',
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b'%.3s', b'abcdef')
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check_format('abc[\ufffd',
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b'%.5s', 'abc[\u20ac]'.encode('utf8'))
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check_format("'\\u20acABC'",
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b'%A', '\u20acABC')
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check_format("'\\u20",
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b'%.5A', '\u20acABCDEF')
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check_format("'\u20acABC'",
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b'%R', '\u20acABC')
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check_format("'\u20acA",
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b'%.3R', '\u20acABCDEF')
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check_format('\u20acAB',
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b'%.3S', '\u20acABCDEF')
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check_format('\u20acAB',
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b'%.3U', '\u20acABCDEF')
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check_format('\u20acAB',
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b'%.3V', '\u20acABCDEF', None)
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check_format('abc[\ufffd',
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b'%.5V', None, 'abc[\u20ac]'.encode('utf8'))
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# following tests comes from #7330
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# test width modifier and precision modifier with %S
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check_format("repr= abc",
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b'repr=%5S', 'abc')
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check_format("repr=ab",
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b'repr=%.2S', 'abc')
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check_format("repr= ab",
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b'repr=%5.2S', 'abc')
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# test width modifier and precision modifier with %R
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check_format("repr= 'abc'",
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b'repr=%8R', 'abc')
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check_format("repr='ab",
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b'repr=%.3R', 'abc')
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check_format("repr= 'ab",
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b'repr=%5.3R', 'abc')
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# test width modifier and precision modifier with %A
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check_format("repr= 'abc'",
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b'repr=%8A', 'abc')
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check_format("repr='ab",
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b'repr=%.3A', 'abc')
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check_format("repr= 'ab",
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b'repr=%5.3A', 'abc')
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# test width modifier and precision modifier with %s
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check_format("repr= abc",
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b'repr=%5s', b'abc')
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check_format("repr=ab",
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b'repr=%.2s', b'abc')
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check_format("repr= ab",
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b'repr=%5.2s', b'abc')
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# test width modifier and precision modifier with %U
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check_format("repr= abc",
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b'repr=%5U', 'abc')
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check_format("repr=ab",
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b'repr=%.2U', 'abc')
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check_format("repr= ab",
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b'repr=%5.2U', 'abc')
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# test width modifier and precision modifier with %V
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check_format("repr= abc",
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b'repr=%5V', 'abc', b'123')
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check_format("repr=ab",
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b'repr=%.2V', 'abc', b'123')
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check_format("repr= ab",
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b'repr=%5.2V', 'abc', b'123')
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check_format("repr= 123",
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b'repr=%5V', None, b'123')
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check_format("repr=12",
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b'repr=%.2V', None, b'123')
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check_format("repr= 12",
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b'repr=%5.2V', None, b'123')
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# test integer formats (%i, %d, %u)
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self.assertEqual(PyUnicode_FromFormat(b'%03i', c_int(10)), '010')
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self.assertEqual(PyUnicode_FromFormat(b'%0.4i', c_int(10)), '0010')
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self.assertEqual(PyUnicode_FromFormat(b'%i', c_int(-123)), '-123')
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self.assertEqual(PyUnicode_FromFormat(b'%li', c_long(-123)), '-123')
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self.assertEqual(PyUnicode_FromFormat(b'%lli', c_longlong(-123)), '-123')
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self.assertEqual(PyUnicode_FromFormat(b'%zi', c_ssize_t(-123)), '-123')
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check_format('010',
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b'%03i', c_int(10))
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check_format('0010',
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b'%0.4i', c_int(10))
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check_format('-123',
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b'%i', c_int(-123))
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check_format('-123',
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b'%li', c_long(-123))
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check_format('-123',
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b'%lli', c_longlong(-123))
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check_format('-123',
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b'%zi', c_ssize_t(-123))
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self.assertEqual(PyUnicode_FromFormat(b'%d', c_int(-123)), '-123')
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self.assertEqual(PyUnicode_FromFormat(b'%ld', c_long(-123)), '-123')
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self.assertEqual(PyUnicode_FromFormat(b'%lld', c_longlong(-123)), '-123')
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self.assertEqual(PyUnicode_FromFormat(b'%zd', c_ssize_t(-123)), '-123')
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check_format('-123',
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b'%d', c_int(-123))
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check_format('-123',
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b'%ld', c_long(-123))
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check_format('-123',
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b'%lld', c_longlong(-123))
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check_format('-123',
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b'%zd', c_ssize_t(-123))
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self.assertEqual(PyUnicode_FromFormat(b'%u', c_uint(123)), '123')
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self.assertEqual(PyUnicode_FromFormat(b'%lu', c_ulong(123)), '123')
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self.assertEqual(PyUnicode_FromFormat(b'%llu', c_ulonglong(123)), '123')
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self.assertEqual(PyUnicode_FromFormat(b'%zu', c_size_t(123)), '123')
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check_format('123',
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b'%u', c_uint(123))
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check_format('123',
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b'%lu', c_ulong(123))
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check_format('123',
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b'%llu', c_ulonglong(123))
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check_format('123',
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b'%zu', c_size_t(123))
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# test long output
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min_longlong = -(2 ** (8 * sizeof(c_longlong) - 1))
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max_longlong = -min_longlong - 1
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self.assertEqual(PyUnicode_FromFormat(b'%lld', c_longlong(min_longlong)), str(min_longlong))
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self.assertEqual(PyUnicode_FromFormat(b'%lld', c_longlong(max_longlong)), str(max_longlong))
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check_format(str(min_longlong),
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b'%lld', c_longlong(min_longlong))
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check_format(str(max_longlong),
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b'%lld', c_longlong(max_longlong))
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max_ulonglong = 2 ** (8 * sizeof(c_ulonglong)) - 1
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self.assertEqual(PyUnicode_FromFormat(b'%llu', c_ulonglong(max_ulonglong)), str(max_ulonglong))
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check_format(str(max_ulonglong),
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b'%llu', c_ulonglong(max_ulonglong))
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PyUnicode_FromFormat(b'%p', c_void_p(-1))
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# test padding (width and/or precision)
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self.assertEqual(PyUnicode_FromFormat(b'%010i', c_int(123)), '123'.rjust(10, '0'))
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self.assertEqual(PyUnicode_FromFormat(b'%100i', c_int(123)), '123'.rjust(100))
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self.assertEqual(PyUnicode_FromFormat(b'%.100i', c_int(123)), '123'.rjust(100, '0'))
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self.assertEqual(PyUnicode_FromFormat(b'%100.80i', c_int(123)), '123'.rjust(80, '0').rjust(100))
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check_format('123'.rjust(10, '0'),
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b'%010i', c_int(123))
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check_format('123'.rjust(100),
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b'%100i', c_int(123))
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check_format('123'.rjust(100, '0'),
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b'%.100i', c_int(123))
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check_format('123'.rjust(80, '0').rjust(100),
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b'%100.80i', c_int(123))
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self.assertEqual(PyUnicode_FromFormat(b'%010u', c_uint(123)), '123'.rjust(10, '0'))
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self.assertEqual(PyUnicode_FromFormat(b'%100u', c_uint(123)), '123'.rjust(100))
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self.assertEqual(PyUnicode_FromFormat(b'%.100u', c_uint(123)), '123'.rjust(100, '0'))
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self.assertEqual(PyUnicode_FromFormat(b'%100.80u', c_uint(123)), '123'.rjust(80, '0').rjust(100))
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check_format('123'.rjust(10, '0'),
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b'%010u', c_uint(123))
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check_format('123'.rjust(100),
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b'%100u', c_uint(123))
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check_format('123'.rjust(100, '0'),
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b'%.100u', c_uint(123))
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check_format('123'.rjust(80, '0').rjust(100),
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b'%100.80u', c_uint(123))
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self.assertEqual(PyUnicode_FromFormat(b'%010x', c_int(0x123)), '123'.rjust(10, '0'))
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self.assertEqual(PyUnicode_FromFormat(b'%100x', c_int(0x123)), '123'.rjust(100))
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self.assertEqual(PyUnicode_FromFormat(b'%.100x', c_int(0x123)), '123'.rjust(100, '0'))
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self.assertEqual(PyUnicode_FromFormat(b'%100.80x', c_int(0x123)), '123'.rjust(80, '0').rjust(100))
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check_format('123'.rjust(10, '0'),
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b'%010x', c_int(0x123))
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check_format('123'.rjust(100),
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b'%100x', c_int(0x123))
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check_format('123'.rjust(100, '0'),
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b'%.100x', c_int(0x123))
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check_format('123'.rjust(80, '0').rjust(100),
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b'%100.80x', c_int(0x123))
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# test %A
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text = PyUnicode_FromFormat(b'%%A:%A', 'abc\xe9\uabcd\U0010ffff')
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self.assertEqual(text, r"%A:'abc\xe9\uabcd\U0010ffff'")
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check_format(r"%A:'abc\xe9\uabcd\U0010ffff'",
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b'%%A:%A', 'abc\xe9\uabcd\U0010ffff')
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# test %V
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text = PyUnicode_FromFormat(b'repr=%V', 'abc', b'xyz')
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self.assertEqual(text, 'repr=abc')
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check_format('repr=abc',
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b'repr=%V', 'abc', b'xyz')
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# Test string decode from parameter of %s using utf-8.
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# b'\xe4\xba\xba\xe6\xb0\x91' is utf-8 encoded byte sequence of
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# '\u4eba\u6c11'
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text = PyUnicode_FromFormat(b'repr=%V', None, b'\xe4\xba\xba\xe6\xb0\x91')
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self.assertEqual(text, 'repr=\u4eba\u6c11')
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check_format('repr=\u4eba\u6c11',
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b'repr=%V', None, b'\xe4\xba\xba\xe6\xb0\x91')
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#Test replace error handler.
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text = PyUnicode_FromFormat(b'repr=%V', None, b'abc\xff')
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self.assertEqual(text, 'repr=abc\ufffd')
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check_format('repr=abc\ufffd',
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b'repr=%V', None, b'abc\xff')
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# not supported: copy the raw format string. these tests are just here
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# to check for crashs and should not be considered as specifications
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self.assertEqual(PyUnicode_FromFormat(b'%1%s', b'abc'), '%s')
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self.assertEqual(PyUnicode_FromFormat(b'%1abc'), '%1abc')
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self.assertEqual(PyUnicode_FromFormat(b'%+i', c_int(10)), '%+i')
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self.assertEqual(PyUnicode_FromFormat(b'%.%s', b'abc'), '%.%s')
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check_format('%s',
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b'%1%s', b'abc')
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check_format('%1abc',
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b'%1abc')
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check_format('%+i',
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b'%+i', c_int(10))
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check_format('%.%s',
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b'%.%s', b'abc')
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# Test PyUnicode_AsWideChar()
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def test_aswidechar(self):
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