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"""
Copyright (C) 2009 john paul janecek, Free Beer (MIT) Licensing
Copyright (C) 2010 Jiahua Huang <jhuangjiahua@gmail.com>, MIT Licensing for this file
Comment by john paul janecek:
------------------
version 0.0003
Applied the patches supplied by MonkeeSage Thanx :)
This fixes the ucs2/ucs4 bug which I had earlier
Also MonkeeSage fixed other things, he make call function nicer and fixed lists so the work properly
Also fixed his patch so it works with both ucs2/ucs4 python
Fixed the setup.py so that it can use pkg-config instead
version 0.0002
I need a versioning system lol
cython wrapper for JSContextRef in pywebkitgtk
you need cython to make it
So you can call Javascript functions etc from python
Made by john paul janecek
Free Beer copyright, do what the heck you want with it, just give me credit
Also do not blame me if your things blow up
if you need to contact me, i might answer back :) I am lazy when it comes to making fixes
unless I actually am using library myself :)
my email
import binascii
binascii.a2b_base64('anBqYW5lY2VrQGdtYWlsLmNvbQ==\n')
------------------
"""
import sys
import types
cdef :
ctypedef unsigned short bool
include "stdlib.pyi"
include "python.pyi"
include "jsbase.pyi"
include "jsstringref.pyi"
include "jsvalueref.pyi"
include "jsobjectref.pyi"
cdef object jsValueToPython(JSContextRef ctx,JSValueRef jsValue):
cdef JSStringRef jsStr
cdef int jsType = JSValueGetType(ctx,jsValue)
cdef JSObject jsObject
cdef JSFunction jsFunction
cdef object result
cdef int isFunction
cdef bool bResult
cdef size_t strlen
if jsType == kJSTypeUndefined or jsType == kJSTypeNull :
JSValueUnprotect(ctx,jsValue)
return None
elif jsType == kJSTypeBoolean :
bResult = JSValueToBoolean(ctx,jsValue)
JSValueUnprotect(ctx,jsValue)
if bResult > 0 :
return True
else :
return False
elif jsType == kJSTypeNumber:
result = JSValueToNumber(ctx,jsValue,NULL)
JSValueUnprotect(ctx,jsValue)
return result
elif jsType == kJSTypeString :
jsStr = JSValueToStringCopy(ctx,jsValue,NULL)
strlen = JSStringGetLength(jsStr)
strlen *= 2
result = PyUnicode_DecodeUTF16(JSStringGetCharactersPtr(jsStr), strlen, NULL, 0)
JSStringRelease(jsStr)
JSValueUnprotect(ctx,jsValue)
return result
else :
if JSObjectIsFunction(ctx,jsValue) > 0 :
jsFunction = JSFunction()
jsFunction.setup(ctx,jsValue)
return jsFunction
else :
jsObject = JSObject()
jsObject.setup(ctx,jsValue)
return jsObject
return None
class JSException(Exception):
def __init__(self,name,message):
self.name = name
self.mess = message
def __str__(self):
return "JSException name : %s message : %s" % (self.name,self.mess)
cdef object makeException(JSContextRef ctx,JSValueRef jsException) :
e = jsValueToPython(ctx,jsException)
return JSException(e.name,e.message)
cdef object JSStringRefToPython(JSStringRef jsString) :
cdef size_t strlen = JSStringGetLength(jsString)
strlen *= 2
result = PyUnicode_DecodeUTF16(JSStringGetCharactersPtr(jsString), strlen, NULL, 0)
return result
cdef JSStringRef PythonToJSString(object pyStr) :
"""result has to be released"""
pyStr = unicode(pyStr).encode("utf-8")
cdef JSStringRef jsStr = JSStringCreateWithUTF8CString(PyString_AsString(pyStr))
return jsStr
cdef JSValueRef PythonTojsValue(JSContextRef ctx,object pyValue):
if isinstance(pyValue,types.NoneType):
return JSValueMakeNull(ctx)
elif isinstance(pyValue,types.BooleanType):
return JSValueMakeBoolean(ctx,pyValue)
elif isinstance(pyValue,(types.IntType,types.FloatType)) :
return JSValueMakeNumber(ctx,pyValue)
elif isinstance(pyValue,types.StringTypes) :
return JSValueMakeString(ctx,PythonToJSString(pyValue))
elif isinstance(pyValue,JSObject):
return (<JSObject>pyValue).jsObject
else :
raise ValueError
cdef class JSObject:
cdef JSContextRef ctx
cdef JSObjectRef jsObject
cdef object propertyNames
cdef int index
def __init__(self) :
self.ctx = NULL
self.jsObject = NULL
self.index = 0
cdef setup(self,JSContextRef ctx,JSObjectRef jsObject):
self.ctx = ctx
self.jsObject = jsObject
self.propertyNames = dict.fromkeys(self.getPropertyNames(),True)
def getPropertyNames(self):
cdef JSPropertyNameArrayRef nameArray = JSObjectCopyPropertyNames(self.ctx,self.jsObject)
names = []
for i in range(JSPropertyNameArrayGetCount(nameArray)):
names.append(JSStringRefToPython(JSPropertyNameArrayGetNameAtIndex(nameArray,i)))
JSPropertyNameArrayRelease(nameArray)
return names
def __getattr__(self,name):
cdef JSStringRef jsStr
cdef JSValueRef jsException
try :
self.propertyNames[name]
jsStr = JSStringCreateWithUTF8CString(name) #has to be a UTF8 string
result = jsValueToPython(self.ctx,JSObjectGetProperty(self.ctx,self.jsObject,jsStr,NULL))
JSStringRelease(jsStr)
return result
except KeyError :
raise AttributeError,name
def __setattr__(self,name,value):
cdef JSStringRef jsStr
self.propertyNames[name] = True
jsStr = JSStringCreateWithUTF8CString(name) #has to be a UTF8 string
JSObjectSetProperty(self.ctx,self.jsObject,jsStr,PythonTojsValue(self.ctx,value),kJSPropertyAttributeNone,NULL)
JSStringRelease(jsStr)
def __getitem__(self,key) :
cdef JSValueRef jsValueRef
cdef JSValueRef jsException = NULL
jsValueRef = JSObjectGetPropertyAtIndex(self.ctx,self.jsObject,key,&jsException)
if jsException != NULL :
raise makeException(self.ctx,jsException)
return jsValueToPython(self.ctx,jsValueRef)
def __setitem__(self,key,value):
cdef JSValueRef jsValue = PythonTojsValue(self.ctx,value)
cdef JSValueRef jsException = NULL
JSObjectSetPropertyAtIndex(self.ctx, self.jsObject, key, jsValue, &jsException)
if jsException != NULL :
raise makeException(self.ctx,jsException)
def __del__(self):
JSValueUnprotect(self.ctx,self.jsObject)
# these are container methods, so that lists behave correctly
def __iter__(self):
return self
def __next__(self): # 2.6 and 3.0 now use __next__
if self.index < self.length:
value = self[self.index]
self.index += 1
return value
else:
self.index = 0
raise StopIteration
def next(self): # wrapper for backwards compatibility
return self.__next__()
def __len__(self):
length = len(self.getPropertyNames())
if hasattr(self, "length"):
length += int(self.length)
return length
cdef class JSFunction(JSObject):
def __init__(self) :
JSObject.__init__(self)
def __call__(self,thisObj,*args):
cdef JSValueRef *jsArgs
cdef JSValueRef result
cdef JSObjectRef jsThisObject
cdef JSValueRef jsError = NULL
if len(args) :
jsArgs = <JSValueRef *>malloc(len(args) * sizeof(JSValueRef))
else :
jsArgs = NULL
for i,arg in enumerate(args) :
jsArgs[i] = PythonTojsValue(self.ctx,arg)
if thisObj :
jsThisObject = (<JSObject>thisObj).jsObject
else :
jsThisObject = NULL
result = JSObjectCallAsFunction(self.ctx,self.jsObject,jsThisObject,len(args),jsArgs,&jsError)
free(jsArgs)
if jsError!=NULL :
raise makeException(self.ctx,jsError)
return jsValueToPython(self.ctx,result)
cdef class JSContext:
cdef JSContextRef jsCtx
cdef object ctx
def __init__(self,ctx):
self.ctx = ctx
self.jsCtx = <JSContextRef>PyCObject_AsVoidPtr(ctx)
def EvaluateScript(self,script,thisObject = None ,sourceURL = None,startingLineNumber = 1):
script = unicode(script).encode("utf-8")
cdef JSStringRef jsScript = JSStringCreateWithUTF8CString(PyString_AsString(script))
cdef JSValueRef jsException = NULL
cdef JSValueRef jsValue = JSEvaluateScript(self.jsCtx,jsScript,<JSObjectRef>NULL,<JSStringRef>NULL,startingLineNumber,&jsException)
JSValueProtect(self.jsCtx,jsValue)
JSStringRelease(jsScript)
if jsException!=NULL :
raise makeException(self.jsCtx,jsException)
return jsValueToPython(self.jsCtx,jsValue)
def getCtx(self):
return self.ctx
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