mirror of https://github.com/python/cpython
Bug #1515471: string.replace() accepts character buffers again.
Pass the char* and size around rather than PyObject's.
This commit is contained in:
Neal Norwitz
parent
07aadb14f3
commit
f71ec5a0ac
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@ -147,8 +147,8 @@ class CommonTest(unittest.TestCase):
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else:
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r2, rem = len(i)+1, 0
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if rem or r1 != r2:
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self.assertEqual(rem, 0)
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self.assertEqual(r1, r2)
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self.assertEqual(rem, 0, '%s != 0 for %s' % (rem, i))
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self.assertEqual(r1, r2, '%s != %s for %s' % (r1, r2, i))
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def test_find(self):
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self.checkequal(0, 'abcdefghiabc', 'find', 'abc')
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@ -636,6 +636,11 @@ class CommonTest(unittest.TestCase):
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EQ("bobobXbobob", "bobobobXbobobob", "replace", "bobob", "bob")
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EQ("BOBOBOB", "BOBOBOB", "replace", "bob", "bobby")
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ba = buffer('a')
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bb = buffer('b')
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EQ("bbc", "abc", "replace", ba, bb)
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EQ("aac", "abc", "replace", bb, ba)
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#
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self.checkequal('one@two!three!', 'one!two!three!', 'replace', '!', '@', 1)
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self.checkequal('onetwothree', 'one!two!three!', 'replace', '!', '')
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@ -12,6 +12,8 @@ What's New in Python 2.5 beta 3?
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Core and builtins
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-----------------
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- Bug #1515471: string.replace() accepts character buffers again.
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- Add PyErr_WarnEx() so C code can pass the stacklevel to warnings.warn().
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This provides the proper warning for struct.pack().
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PyErr_Warn() is now deprecated in favor of PyErr_WarnEx().
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@ -2464,11 +2464,11 @@ return_self(PyStringObject *self)
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}
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Py_LOCAL_INLINE(Py_ssize_t)
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countchar(char *target, int target_len, char c, Py_ssize_t maxcount)
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countchar(const char *target, int target_len, char c, Py_ssize_t maxcount)
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{
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Py_ssize_t count=0;
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char *start=target;
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char *end=target+target_len;
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const char *start=target;
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const char *end=target+target_len;
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while ( (start=findchar(start, end-start, c)) != NULL ) {
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count++;
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@ -2480,8 +2480,8 @@ countchar(char *target, int target_len, char c, Py_ssize_t maxcount)
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}
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Py_LOCAL(Py_ssize_t)
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findstring(char *target, Py_ssize_t target_len,
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char *pattern, Py_ssize_t pattern_len,
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findstring(const char *target, Py_ssize_t target_len,
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const char *pattern, Py_ssize_t pattern_len,
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Py_ssize_t start,
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Py_ssize_t end,
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int direction)
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@ -2518,8 +2518,8 @@ findstring(char *target, Py_ssize_t target_len,
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}
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Py_LOCAL_INLINE(Py_ssize_t)
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countstring(char *target, Py_ssize_t target_len,
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char *pattern, Py_ssize_t pattern_len,
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countstring(const char *target, Py_ssize_t target_len,
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const char *pattern, Py_ssize_t pattern_len,
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Py_ssize_t start,
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Py_ssize_t end,
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int direction, Py_ssize_t maxcount)
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@ -2572,16 +2572,15 @@ countstring(char *target, Py_ssize_t target_len,
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/* len(self)>=1, from="", len(to)>=1, maxcount>=1 */
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Py_LOCAL(PyStringObject *)
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replace_interleave(PyStringObject *self,
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PyStringObject *to,
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const char *to_s, Py_ssize_t to_len,
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Py_ssize_t maxcount)
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{
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char *self_s, *to_s, *result_s;
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Py_ssize_t self_len, to_len, result_len;
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char *self_s, *result_s;
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Py_ssize_t self_len, result_len;
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Py_ssize_t count, i, product;
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PyStringObject *result;
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self_len = PyString_GET_SIZE(self);
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to_len = PyString_GET_SIZE(to);
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/* 1 at the end plus 1 after every character */
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count = self_len+1;
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@ -2608,8 +2607,6 @@ replace_interleave(PyStringObject *self,
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return NULL;
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self_s = PyString_AS_STRING(self);
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to_s = PyString_AS_STRING(to);
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to_len = PyString_GET_SIZE(to);
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result_s = PyString_AS_STRING(result);
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/* TODO: special case single character, which doesn't need memcpy */
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@ -2677,18 +2674,17 @@ replace_delete_single_character(PyStringObject *self,
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/* len(self)>=1, len(from)>=2, to="", maxcount>=1 */
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Py_LOCAL(PyStringObject *)
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replace_delete_substring(PyStringObject *self, PyStringObject *from,
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replace_delete_substring(PyStringObject *self,
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const char *from_s, Py_ssize_t from_len,
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Py_ssize_t maxcount) {
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char *self_s, *from_s, *result_s;
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char *self_s, *result_s;
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char *start, *next, *end;
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Py_ssize_t self_len, from_len, result_len;
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Py_ssize_t self_len, result_len;
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Py_ssize_t count, offset;
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PyStringObject *result;
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self_len = PyString_GET_SIZE(self);
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self_s = PyString_AS_STRING(self);
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from_len = PyString_GET_SIZE(from);
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from_s = PyString_AS_STRING(from);
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count = countstring(self_s, self_len,
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from_s, from_len,
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@ -2776,24 +2772,20 @@ replace_single_character_in_place(PyStringObject *self,
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/* len(self)>=1, len(from)==len(to)>=2, maxcount>=1 */
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Py_LOCAL(PyStringObject *)
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replace_substring_in_place(PyStringObject *self,
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PyStringObject *from,
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PyStringObject *to,
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const char *from_s, Py_ssize_t from_len,
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const char *to_s, Py_ssize_t to_len,
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Py_ssize_t maxcount)
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{
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char *result_s, *start, *end;
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char *self_s, *from_s, *to_s;
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Py_ssize_t self_len, from_len, offset;
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char *self_s;
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Py_ssize_t self_len, offset;
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PyStringObject *result;
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/* The result string will be the same size */
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self_s = PyString_AS_STRING(self);
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self_len = PyString_GET_SIZE(self);
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from_s = PyString_AS_STRING(from);
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from_len = PyString_GET_SIZE(from);
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to_s = PyString_AS_STRING(to);
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offset = findstring(self_s, self_len,
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from_s, from_len,
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0, self_len, FORWARD);
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@ -2810,7 +2802,6 @@ replace_substring_in_place(PyStringObject *self,
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result_s = PyString_AS_STRING(result);
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Py_MEMCPY(result_s, self_s, self_len);
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/* change everything in-place, starting with this one */
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start = result_s + offset;
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Py_MEMCPY(start, to_s, from_len);
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@ -2834,12 +2825,12 @@ replace_substring_in_place(PyStringObject *self,
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Py_LOCAL(PyStringObject *)
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replace_single_character(PyStringObject *self,
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char from_c,
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PyStringObject *to,
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const char *to_s, Py_ssize_t to_len,
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Py_ssize_t maxcount)
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{
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char *self_s, *to_s, *result_s;
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char *self_s, *result_s;
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char *start, *next, *end;
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Py_ssize_t self_len, to_len, result_len;
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Py_ssize_t self_len, result_len;
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Py_ssize_t count, product;
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PyStringObject *result;
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@ -2852,10 +2843,7 @@ replace_single_character(PyStringObject *self,
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/* no matches, return unchanged */
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return return_self(self);
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}
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to_s = PyString_AS_STRING(to);
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to_len = PyString_GET_SIZE(to);
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/* use the difference between current and new, hence the "-1" */
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/* result_len = self_len + count * (to_len-1) */
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product = count * (to_len-1);
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@ -2904,20 +2892,18 @@ replace_single_character(PyStringObject *self,
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/* len(self)>=1, len(from)>=2, len(to)>=2, maxcount>=1 */
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Py_LOCAL(PyStringObject *)
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replace_substring(PyStringObject *self,
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PyStringObject *from,
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PyStringObject *to,
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const char *from_s, Py_ssize_t from_len,
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const char *to_s, Py_ssize_t to_len,
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Py_ssize_t maxcount) {
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char *self_s, *from_s, *to_s, *result_s;
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char *self_s, *result_s;
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char *start, *next, *end;
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Py_ssize_t self_len, from_len, to_len, result_len;
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Py_ssize_t self_len, result_len;
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Py_ssize_t count, offset, product;
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PyStringObject *result;
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self_s = PyString_AS_STRING(self);
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self_len = PyString_GET_SIZE(self);
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from_s = PyString_AS_STRING(from);
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from_len = PyString_GET_SIZE(from);
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count = countstring(self_s, self_len,
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from_s, from_len,
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0, self_len, FORWARD, maxcount);
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@ -2925,10 +2911,7 @@ replace_substring(PyStringObject *self,
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/* no matches, return unchanged */
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return return_self(self);
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}
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to_s = PyString_AS_STRING(to);
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to_len = PyString_GET_SIZE(to);
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/* Check for overflow */
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/* result_len = self_len + count * (to_len-from_len) */
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product = count * (to_len-from_len);
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@ -2979,22 +2962,17 @@ replace_substring(PyStringObject *self,
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Py_LOCAL(PyStringObject *)
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replace(PyStringObject *self,
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PyStringObject *from,
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PyStringObject *to,
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const char *from_s, Py_ssize_t from_len,
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const char *to_s, Py_ssize_t to_len,
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Py_ssize_t maxcount)
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{
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Py_ssize_t from_len, to_len;
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if (maxcount < 0) {
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maxcount = PY_SSIZE_T_MAX;
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} else if (maxcount == 0 || PyString_GET_SIZE(self) == 0) {
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/* nothing to do; return the original string */
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return return_self(self);
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}
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from_len = PyString_GET_SIZE(from);
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to_len = PyString_GET_SIZE(to);
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if (maxcount == 0 ||
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(from_len == 0 && to_len == 0)) {
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/* nothing to do; return the original string */
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@ -3007,7 +2985,7 @@ replace(PyStringObject *self,
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/* insert the 'to' string everywhere. */
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/* >>> "Python".replace("", ".") */
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/* '.P.y.t.h.o.n.' */
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return replace_interleave(self, to, maxcount);
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return replace_interleave(self, to_s, to_len, maxcount);
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}
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/* Except for "".replace("", "A") == "A" there is no way beyond this */
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@ -3021,9 +2999,9 @@ replace(PyStringObject *self,
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/* delete all occurances of 'from' string */
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if (from_len == 1) {
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return replace_delete_single_character(
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self, PyString_AS_STRING(from)[0], maxcount);
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self, from_s[0], maxcount);
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} else {
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return replace_delete_substring(self, from, maxcount);
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return replace_delete_substring(self, from_s, from_len, maxcount);
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}
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}
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@ -3033,22 +3011,22 @@ replace(PyStringObject *self,
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if (from_len == 1) {
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return replace_single_character_in_place(
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self,
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PyString_AS_STRING(from)[0],
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PyString_AS_STRING(to)[0],
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from_s[0],
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to_s[0],
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maxcount);
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} else {
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return replace_substring_in_place(
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self, from, to, maxcount);
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self, from_s, from_len, to_s, to_len, maxcount);
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}
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}
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/* Otherwise use the more generic algorithms */
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if (from_len == 1) {
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return replace_single_character(self, PyString_AS_STRING(from)[0],
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to, maxcount);
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return replace_single_character(self, from_s[0],
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to_s, to_len, maxcount);
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} else {
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/* len('from')>=2, len('to')>=1 */
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return replace_substring(self, from, to, maxcount);
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return replace_substring(self, from_s, from_len, to_s, to_len, maxcount);
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}
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}
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@ -3064,37 +3042,39 @@ string_replace(PyStringObject *self, PyObject *args)
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{
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Py_ssize_t count = -1;
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PyObject *from, *to;
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const char *tmp_s;
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Py_ssize_t tmp_len;
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const char *from_s, *to_s;
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Py_ssize_t from_len, to_len;
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if (!PyArg_ParseTuple(args, "OO|n:replace", &from, &to, &count))
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return NULL;
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if (PyString_Check(from)) {
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/* Can this be made a '!check' after the Unicode check? */
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from_s = PyString_AS_STRING(from);
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from_len = PyString_GET_SIZE(from);
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}
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#ifdef Py_USING_UNICODE
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if (PyUnicode_Check(from))
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return PyUnicode_Replace((PyObject *)self,
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from, to, count);
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#endif
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else if (PyObject_AsCharBuffer(from, &tmp_s, &tmp_len))
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else if (PyObject_AsCharBuffer(from, &from_s, &from_len))
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return NULL;
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if (PyString_Check(to)) {
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/* Can this be made a '!check' after the Unicode check? */
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to_s = PyString_AS_STRING(to);
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to_len = PyString_GET_SIZE(to);
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}
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#ifdef Py_USING_UNICODE
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else if (PyUnicode_Check(to))
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return PyUnicode_Replace((PyObject *)self,
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from, to, count);
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#endif
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else if (PyObject_AsCharBuffer(to, &tmp_s, &tmp_len))
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else if (PyObject_AsCharBuffer(to, &to_s, &to_len))
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return NULL;
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return (PyObject *)replace((PyStringObject *) self,
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(PyStringObject *) from,
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(PyStringObject *) to, count);
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from_s, from_len,
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to_s, to_len, count);
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}
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/** End DALKE **/
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