JSBool JavaObject::getProperty(JSContext* ctx, JSObject* obj, jsid id,
jsval* rval) {
Debug::log(Debug::Spam) << "JavaObject::getProperty obj=" << obj << Debug::flush;
SessionData* data = JavaObject::getSessionData(ctx, obj);
if (!data) {
// TODO: replace the frame with an error page instead?
*rval = JSVAL_VOID;
return JS_TRUE;
}
int objectRef = JavaObject::getObjectId(ctx, obj);
if (JSID_IS_STRING(id)) {
JSString* str = JSID_TO_STRING(id);
if ((JS_GetStringEncodingLength(ctx, str) == 8) && !strncmp("toString",
JS_EncodeString(ctx, str), 8)) {
*rval = data->getToStringTearOff();
return JS_TRUE;
}
if ((JS_GetStringEncodingLength(ctx, str) == 2) && !strncmp("id",
JS_EncodeString(ctx, str), 2)) {
*rval = INT_TO_JSVAL(objectRef);
return JS_TRUE;
}
if ((JS_GetStringEncodingLength(ctx, str) == 16) && !strncmp("__noSuchMethod__",
JS_EncodeString(ctx, str), 16)) {
// Avoid error spew if we are disconnected
*rval = JSVAL_VOID;
return JS_TRUE;
}
// TODO: dumpJsVal can no longer handle this case
//Debug::log(Debug::Error) << "Getting unexpected string property "
// << dumpJsVal(ctx, id) << Debug::flush;
// TODO: throw a better exception here
return JS_FALSE;
}
if (!JSID_IS_INT(id)) {
// TODO: dumpJsVal can no longer handle this case
//Debug::log(Debug::Error) << "Getting non-int/non-string property "
// << dumpJsVal(ctx, id) << Debug::flush;
// TODO: throw a better exception here
return JS_FALSE;
}
int dispId = JSID_TO_INT(id);
HostChannel* channel = data->getHostChannel();
SessionHandler* handler = data->getSessionHandler();
gwt::Value value = ServerMethods::getProperty(*channel, handler, objectRef, dispId);
data->makeJsvalFromValue(*rval, ctx, value);
return JS_TRUE;
}
rpmRC rpmjsRun(rpmjs js, const char * str, const char ** resultp)
{
rpmRC rc = RPMRC_FAIL;
if (!(str && *str))
goto exit;
if (js == NULL) js = rpmjsI();
#if defined(WITH_GPSEE)
{ gpsee_interpreter_t * I = js->I;
jsval v = JSVAL_VOID;
JSBool ok = JS_EvaluateScript(I->cx, I->realm->globalObject,
str, strlen(str), __FILE__, __LINE__, &v);
if (!ok)
goto exit;
rc = RPMRC_OK;
if (resultp && JSVAL_IS_STRING(v)) {
JSString * rstr = JSVAL_TO_STRING(v);
size_t ns = JS_GetStringEncodingLength(I->cx, rstr);
char * s = xmalloc(ns+1);
ns = JS_EncodeStringToBuffer(rstr, s, ns);
s[ns] = '\0';
*resultp = s;
}
}
#endif /* WITH_GPSEE */
exit:
RPMJSDBG(0, (stderr, "<== %s(%p,%p[%u]) rc %d\n", __FUNCTION__, js, str, (unsigned)(str ? strlen(str) : 0), rc));
return rc;
}
nsresult
XPCJSStackFrame::CreateStack(JSContext* cx, JSStackFrame* fp,
XPCJSStackFrame** stack)
{
static const unsigned MAX_FRAMES = 100;
unsigned numFrames = 0;
nsRefPtr<XPCJSStackFrame> first = new XPCJSStackFrame();
nsRefPtr<XPCJSStackFrame> self = first;
while (fp && self) {
if (!JS_IsScriptFrame(cx, fp)) {
self->mLanguage = nsIProgrammingLanguage::CPLUSPLUS;
} else {
self->mLanguage = nsIProgrammingLanguage::JAVASCRIPT;
JSScript* script = JS_GetFrameScript(cx, fp);
jsbytecode* pc = JS_GetFramePC(cx, fp);
if (script && pc) {
JS::AutoEnterFrameCompartment ac;
if (ac.enter(cx, fp)) {
const char* filename = JS_GetScriptFilename(cx, script);
if (filename) {
self->mFilename = (char*)
nsMemory::Clone(filename,
sizeof(char)*(strlen(filename)+1));
}
self->mLineno = (int32_t) JS_PCToLineNumber(cx, script, pc);
JSFunction* fun = JS_GetFrameFunction(cx, fp);
if (fun) {
JSString *funid = JS_GetFunctionId(fun);
if (funid) {
size_t length = JS_GetStringEncodingLength(cx, funid);
if (length != size_t(-1)) {
self->mFunname = static_cast<char *>(nsMemory::Alloc(length + 1));
if (self->mFunname) {
JS_EncodeStringToBuffer(funid, self->mFunname, length);
self->mFunname[length] = '\0';
}
}
}
}
}
} else {
self->mLanguage = nsIProgrammingLanguage::CPLUSPLUS;
}
}
if (++numFrames > MAX_FRAMES) {
fp = NULL;
} else if (JS_FrameIterator(cx, &fp)) {
XPCJSStackFrame* frame = new XPCJSStackFrame();
self->mCaller = frame;
self = frame;
}
}
*stack = first.forget().get();
return NS_OK;
}
gboolean
gjs_string_to_utf8 (JSContext *context,
const jsval value,
char **utf8_string_p)
{
JSString *str;
gsize len;
char *bytes;
JS_BeginRequest(context);
if (!JSVAL_IS_STRING(value)) {
gjs_throw(context,
"Value is not a string, cannot convert to UTF-8");
JS_EndRequest(context);
return JS_FALSE;
}
str = JSVAL_TO_STRING(value);
len = JS_GetStringEncodingLength(context, str);
if (len == (gsize)(-1)) {
JS_EndRequest(context);
return JS_FALSE;
}
if (utf8_string_p) {
bytes = JS_EncodeStringToUTF8(context, str);
*utf8_string_p = bytes;
}
JS_EndRequest(context);
return JS_TRUE;
}
bool
gjs_string_to_utf8 (JSContext *context,
const JS::Value value,
char **utf8_string_p)
{
gsize len;
char *bytes;
JS_BeginRequest(context);
if (!value.isString()) {
gjs_throw(context,
"Value is not a string, cannot convert to UTF-8");
JS_EndRequest(context);
return false;
}
JS::RootedString str(context, value.toString());
len = JS_GetStringEncodingLength(context, str);
if (len == (gsize)(-1)) {
JS_EndRequest(context);
return false;
}
if (utf8_string_p) {
bytes = JS_EncodeStringToUTF8(context, str);
*utf8_string_p = bytes;
}
JS_EndRequest(context);
return true;
}
nsresult
XPCJSStackFrame::CreateStack(JSContext* cx, XPCJSStackFrame** stack)
{
static const unsigned MAX_FRAMES = 100;
nsRefPtr<XPCJSStackFrame> first = new XPCJSStackFrame();
nsRefPtr<XPCJSStackFrame> self = first;
JS::StackDescription* desc = JS::DescribeStack(cx, MAX_FRAMES);
if (!desc)
return NS_ERROR_FAILURE;
for (size_t i = 0; i < desc->nframes && self; i++) {
self->mLanguage = nsIProgrammingLanguage::JAVASCRIPT;
JSAutoCompartment ac(cx, desc->frames[i].script);
const char* filename = JS_GetScriptFilename(cx, desc->frames[i].script);
if (filename) {
self->mFilename = (char*)
nsMemory::Clone(filename,
sizeof(char)*(strlen(filename)+1));
}
self->mLineno = desc->frames[i].lineno;
JSFunction* fun = desc->frames[i].fun;
if (fun) {
JS::RootedString funid(cx, JS_GetFunctionDisplayId(fun));
if (funid) {
size_t length = JS_GetStringEncodingLength(cx, funid);
if (length != size_t(-1)) {
self->mFunname = static_cast<char *>(nsMemory::Alloc(length + 1));
if (self->mFunname) {
JS_EncodeStringToBuffer(cx, funid, self->mFunname, length);
self->mFunname[length] = '\0';
}
}
}
}
XPCJSStackFrame* frame = new XPCJSStackFrame();
self->mCaller = frame;
self = frame;
}
JS::FreeStackDescription(cx, desc);
*stack = first.forget().get();
return NS_OK;
}
static JSBool _egueb_script_js_sm_scripter_alert(JSContext *cx, uintN argc, jsval *vp)
{
JSString* u16_txt;
unsigned int length;
char *txt;
if (!JS_ConvertArguments(cx, argc, JS_ARGV(cx, vp), "S", &u16_txt))
return JS_FALSE;
length = JS_GetStringEncodingLength(cx, u16_txt);
txt = alloca(sizeof(char) * (length + 1));
JS_EncodeStringToBuffer(u16_txt, txt, length);
printf("%.*s\n", length, txt);
return JS_TRUE;
}
int run(JSContext * cx)
{
/* Enter a request before running anything in the context */
JSAutoRequest ar(cx);
/* Create the global object in a new compartment. */
JSObject *global = JS_NewGlobalObject(cx, &global_class, nullptr);
if (!global)
return 3;
/* Set the context's global */
JSAutoCompartment ac(cx, global);
JS_SetGlobalObject(cx, global);
/* Populate the global object with the standard globals, like Object and Array. */
if (!JS_InitStandardClasses(cx, global))
return 4;
/* Your application code here. This may include JSAPI calls to create your own custom JS objects and run scripts. */
js::RootedValue rval(cx);
int rc = JS_EvaluateScript(cx, global, runCommand, strlen(runCommand),
"TestCommand", 0, rval.address());
if (!rc)
return 5;
if (!JSVAL_IS_STRING(rval))
return 0;
/* Result of the command is a string, print it out. */
js::RootedString str(cx, JSVAL_TO_STRING(rval));
size_t encodedLength = JS_GetStringEncodingLength(cx, str);
rc = 0;
char *buffer = (char *)malloc(encodedLength + 1);
buffer[encodedLength] = '\0';
size_t result = JS_EncodeStringToBuffer(cx, str, buffer, encodedLength);
if (result == (size_t) - 1)
rc = 6;
else
puts(buffer);
free(buffer);
return rc;
}
bool GetOVRString(JSContext* cx, JS::HandleString s, OVR::String* out) {
// Fill a buffer with the string data
size_t sLen = JS_GetStringEncodingLength(cx, s) * sizeof(char);
char* sBuf = new char[sLen+1];
size_t sCopiedLen = JS_EncodeStringToBuffer(cx, s, sBuf, sLen);
if (sCopiedLen != sLen) {
delete[] sBuf;
JS_ReportError(cx, "Could not encode output");
return false;
}
sBuf[sLen] = '\0';
// Create the string to return from the buffer
// TODO: See whether we can avoid this extra string copy
*out = OVR::String(sBuf);
// Make sure we free the buffer before returning our string
delete[] sBuf;
return true;
}
