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
|
# This script will generate the Resources interface for Python.
# It uses the "bgen" package to generate C code.
# It execs the file resgen.py which contain the function definitions
# (resgen.py was generated by resscan.py, scanning the <Resources.h> header file).
from macsupport import *
class ResMixIn:
def checkit(self):
OutLbrace()
Output("OSErr _err = ResError();")
Output("if (_err != noErr) return PyMac_Error(_err);")
OutRbrace()
FunctionGenerator.checkit(self) # XXX
class ResFunction(ResMixIn, FunctionGenerator): pass
class ResMethod(ResMixIn, MethodGenerator): pass
# includestuff etc. are imported from macsupport
includestuff = includestuff + """
#include <Resources.h>
#include <string.h>
#define resNotFound -192 /* Can't include <Errors.h> because of Python's "errors.h" */
"""
finalstuff = finalstuff + """
/* Alternative version of ResObj_New, which returns None for null argument */
PyObject *OptResObj_New(itself)
Handle itself;
{
if (itself == NULL) {
Py_INCREF(Py_None);
return Py_None;
}
return ResObj_New(itself);
}
OptResObj_Convert(v, p_itself)
PyObject *v;
Handle *p_itself;
{
PyObject *tmp;
if ( v == Py_None ) {
*p_itself = NULL;
return 1;
}
if (ResObj_Check(v))
{
*p_itself = ((ResourceObject *)v)->ob_itself;
return 1;
}
/* If it isn't a resource yet see whether it is convertible */
if ( (tmp=PyObject_CallMethod(v, "as_Resource", "")) ) {
*p_itself = ((ResourceObject *)tmp)->ob_itself;
Py_DECREF(tmp);
return 1;
}
PyErr_Clear();
PyErr_SetString(PyExc_TypeError, "Resource required");
return 0;
}
"""
initstuff = initstuff + """
"""
module = MacModule('Res', 'Res', includestuff, finalstuff, initstuff)
getattrHookCode = """
if (strcmp(name, "size") == 0)
return PyInt_FromLong(GetHandleSize(self->ob_itself));
if (strcmp(name, "data") == 0) {
PyObject *res;
char state;
state = HGetState(self->ob_itself);
HLock(self->ob_itself);
res = PyString_FromStringAndSize(
*self->ob_itself,
GetHandleSize(self->ob_itself));
HUnlock(self->ob_itself);
HSetState(self->ob_itself, state);
return res;
}
if (strcmp(name, "__members__") == 0)
return Py_BuildValue("[ss]", "data", "size");
"""
setattrCode = """
static int
ResObj_setattr(self, name, value)
ResourceObject *self;
char *name;
PyObject *value;
{
char *data;
long size;
if (strcmp(name, "data") != 0 || value == NULL )
return -1;
if ( !PyString_Check(value) )
return -1;
size = PyString_Size(value);
data = PyString_AsString(value);
/* XXXX Do I need the GetState/SetState calls? */
SetHandleSize(self->ob_itself, size);
if ( MemError())
return -1;
HLock(self->ob_itself);
memcpy((char *)*self->ob_itself, data, size);
HUnlock(self->ob_itself);
/* XXXX Should I do the Changed call immedeately? */
return 0;
}
"""
class ResDefiniton(GlobalObjectDefinition):
def outputCheckNewArg(self):
Output("if (itself == NULL) return PyMac_Error(resNotFound);")
def outputCheckConvertArg(self):
# if it isn't a resource we may be able to coerce it
Output("if (!%s_Check(v))", self.prefix)
OutLbrace()
Output("PyObject *tmp;")
Output('if ( (tmp=PyObject_CallMethod(v, "as_Resource", "")) )')
OutLbrace()
Output("*p_itself = ((ResourceObject *)tmp)->ob_itself;")
Output("Py_DECREF(tmp);")
Output("return 1;")
OutRbrace()
Output("PyErr_Clear();")
OutRbrace()
def outputGetattrHook(self):
Output(getattrHookCode)
def outputSetattr(self):
Output(setattrCode)
resobject = ResDefiniton('Resource', 'ResObj', 'Handle')
module.addobject(resobject)
functions = []
resmethods = []
execfile('resgen.py')
execfile('resedit.py')
for f in functions: module.add(f)
for f in resmethods: resobject.add(f)
SetOutputFileName('Resmodule.c')
module.generate()
|
