1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
from .object cimport PyObject
cdef extern from "Python.h":
ctypedef struct va_list
############################################################################
# 7.3.1 String Objects
############################################################################
# These functions raise TypeError when expecting a string
# parameter and are called with a non-string parameter.
# PyStringObject
# This subtype of PyObject represents a Python string object.
# PyTypeObject PyString_Type
# This instance of PyTypeObject represents the Python string type;
# it is the same object as str and types.StringType in the Python
# layer.
bint PyString_Check(object o)
# Return true if the object o is a string object or an instance of
# a subtype of the string type.
bint PyString_CheckExact(object o)
# Return true if the object o is a string object, but not an instance of a subtype of the string type.
object PyString_FromString(char *v)
# Return value: New reference.
# Return a new string object with the value v on success, and NULL
# on failure. The parameter v must not be NULL; it will not be
# checked.
object PyString_FromStringAndSize(char *v, Py_ssize_t len)
# Return value: New reference.
# Return a new string object with the value v and length len on
# success, and NULL on failure. If v is NULL, the contents of the
# string are uninitialized.
object PyString_FromFormat(char *format, ...)
# Return value: New reference.
# Take a C printf()-style format string and a variable number of
# arguments, calculate the size of the resulting Python string and
# return a string with the values formatted into it. The variable
# arguments must be C types and must correspond exactly to the
# format characters in the format string. The following format
# characters are allowed:
# Format Characters Type Comment
# %% n/a The literal % character.
# %c int A single character, represented as an C int.
# %d int Exactly equivalent to printf("%d").
# %u unsigned int Exactly equivalent to printf("%u").
# %ld long Exactly equivalent to printf("%ld").
# %lu unsigned long Exactly equivalent to printf("%lu").
# %zd Py_ssize_t Exactly equivalent to printf("%zd").
# %zu size_t Exactly equivalent to printf("%zu").
# %i int Exactly equivalent to printf("%i").
# %x int Exactly equivalent to printf("%x").
# %s char* A null-terminated C character array.
# %p void* The hex representation of a C pointer.
# Mostly equivalent to printf("%p") except that it is guaranteed to
# start with the literal 0x regardless of what the platform's printf
# yields.
# 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.
object PyString_FromFormatV(char *format, va_list vargs)
# Return value: New reference.
# Identical to PyString_FromFormat() except that it takes exactly two arguments.
Py_ssize_t PyString_Size(object string) except -1
# Return the length of the string in string object string.
Py_ssize_t PyString_GET_SIZE(object string)
# Macro form of PyString_Size() but without error checking.
char* PyString_AsString(object string) except NULL
# Return a NUL-terminated representation of the contents of
# string. The pointer refers to the internal buffer of string, not
# a copy. The data must not be modified in any way, unless the
# string was just created using PyString_FromStringAndSize(NULL,
# size). It must not be deallocated. If string is a Unicode
# object, this function computes the default encoding of string
# and operates on that. If string is not a string object at all,
# PyString_AsString() returns NULL and raises TypeError.
char* PyString_AS_STRING(object string)
# Macro form of PyString_AsString() but without error
# checking. Only string objects are supported; no Unicode objects
# should be passed.
int PyString_AsStringAndSize(object obj, char **buffer, Py_ssize_t *length) except -1
# Return a NULL-terminated representation of the contents of the
# object obj through the output variables buffer and length.
#
# The function accepts both string and Unicode objects as
# input. For Unicode objects it returns the default encoded
# version of the object. If length is NULL, the resulting buffer
# may not contain NUL characters; if it does, the function returns
# -1 and a TypeError is raised.
# The buffer refers to an internal string buffer of obj, not a
# copy. The data must not be modified in any way, unless the
# string was just created using PyString_FromStringAndSize(NULL,
# size). It must not be deallocated. If string is a Unicode
# object, this function computes the default encoding of string
# and operates on that. If string is not a string object at all,
# PyString_AsStringAndSize() returns -1 and raises TypeError.
void PyString_Concat(PyObject **string, object newpart)
# Create a new string object in *string containing the contents of
# newpart appended to string; the caller will own the new
# reference. The reference to the old value of string will be
# stolen. If the new string cannot be created, the old reference
# to string will still be discarded and the value of *string will
# be set to NULL; the appropriate exception will be set.
void PyString_ConcatAndDel(PyObject **string, object newpart)
# Create a new string object in *string containing the contents of
# newpart appended to string. This version decrements the
# reference count of newpart.
int _PyString_Resize(PyObject **string, Py_ssize_t newsize) except -1
# A way to resize a string object even though it is
# ``immutable''. Only use this to build up a brand new string
# object; don't use this if the string may already be known in
# other parts of the code. It is an error to call this function if
# the refcount on the input string object is not one. Pass the
# address of an existing string object as an lvalue (it may be
# written into), and the new size desired. On success, *string
# holds the resized string object and 0 is returned; the address
# in *string may differ from its input value. If the reallocation
# fails, the original string object at *string is deallocated,
# *string is set to NULL, a memory exception is set, and -1 is
# returned.
object PyString_Format(object format, object args)
# Return value: New reference. Return a new string object from
# format and args. Analogous to format % args. The args argument
# must be a tuple.
void PyString_InternInPlace(PyObject **string)
# Intern the argument *string in place. The argument must be the
# address of a pointer variable pointing to a Python string
# object. If there is an existing interned string that is the same
# as *string, it sets *string to it (decrementing the reference
# count of the old string object and incrementing the reference
# count of the interned string object), otherwise it leaves
# *string alone and interns it (incrementing its reference
# count). (Clarification: even though there is a lot of talk about
# reference counts, think of this function as
# reference-count-neutral; you own the object after the call if
# and only if you owned it before the call.)
object PyString_InternFromString(char *v)
# Return value: New reference.
# A combination of PyString_FromString() and
# PyString_InternInPlace(), returning either a new string object
# that has been interned, or a new (``owned'') reference to an
# earlier interned string object with the same value.
object PyString_Decode(char *s, Py_ssize_t size, char *encoding, char *errors)
# Return value: New reference.
# Create an object by decoding size bytes of the encoded buffer s
# using the codec registered for encoding. encoding and errors
# have the same meaning as the parameters of the same name in the
# unicode() built-in function. The codec to be used is looked up
# using the Python codec registry. Return NULL if an exception was
# raised by the codec.
object PyString_AsDecodedObject(object str, char *encoding, char *errors)
# Return value: New reference.
# Decode a string object by passing it to the codec registered for
# encoding and return the result as Python object. encoding and
# errors have the same meaning as the parameters of the same name
# in the string encode() method. The codec to be used is looked up
# using the Python codec registry. Return NULL if an exception was
# raised by the codec.
object PyString_Encode(char *s, Py_ssize_t size, char *encoding, char *errors)
# Return value: New reference.
# Encode the char buffer of the given size by passing it to the
# codec registered for encoding and return a Python
# object. encoding and errors have the same meaning as the
# parameters of the same name in the string encode() method. The
# codec to be used is looked up using the Python codec
# registry. Return NULL if an exception was raised by the codec.
object PyString_AsEncodedObject(object str, char *encoding, char *errors)
# Return value: New reference.
# Encode a string object using the codec registered for encoding
# and return the result as Python object. encoding and errors have
# the same meaning as the parameters of the same name in the
# string encode() method. The codec to be used is looked up using
# the Python codec registry. Return NULL if an exception was
# raised by the codec.
|
