зеркало из https://github.com/mozilla/gecko-dev.git
442 строки
10 KiB
C++
442 строки
10 KiB
C++
/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
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/* vim: set ts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "File.h"
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#include "nsIDOMFile.h"
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#include "nsDOMBlobBuilder.h"
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#include "nsError.h"
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#include "jsapi.h"
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#include "jsfriendapi.h"
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#include "nsCOMPtr.h"
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#include "nsJSUtils.h"
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#include "nsStringGlue.h"
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#include "Exceptions.h"
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#include "WorkerInlines.h"
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#include "WorkerPrivate.h"
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#define PROPERTY_FLAGS \
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(JSPROP_ENUMERATE | JSPROP_SHARED)
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USING_WORKERS_NAMESPACE
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using mozilla::dom::workers::exceptions::ThrowDOMExceptionForNSResult;
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namespace {
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class Blob
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{
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// Blob should never be instantiated.
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Blob();
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~Blob();
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static JSClass sClass;
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static const JSPropertySpec sProperties[];
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static const JSFunctionSpec sFunctions[];
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public:
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static JSObject*
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InitClass(JSContext* aCx, JSObject* aObj)
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{
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return JS_InitClass(aCx, aObj, NULL, &sClass, Construct, 0, sProperties,
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sFunctions, NULL, NULL);
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}
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static JSObject*
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Create(JSContext* aCx, nsIDOMBlob* aBlob)
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{
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JS_ASSERT(SameCOMIdentity(static_cast<nsISupports*>(aBlob), aBlob));
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JSObject* obj = JS_NewObject(aCx, &sClass, NULL, NULL);
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if (obj) {
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JS_SetPrivate(obj, aBlob);
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NS_ADDREF(aBlob);
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}
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return obj;
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}
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static nsIDOMBlob*
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GetPrivate(JSObject* aObj);
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private:
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static nsIDOMBlob*
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GetInstancePrivate(JSContext* aCx, JSObject* aObj, const char* aFunctionName)
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{
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nsIDOMBlob* blob = GetPrivate(aObj);
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if (blob) {
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return blob;
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}
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JS_ReportErrorNumber(aCx, js_GetErrorMessage, NULL,
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JSMSG_INCOMPATIBLE_PROTO, sClass.name, aFunctionName,
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JS_GetClass(aObj)->name);
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return NULL;
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}
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static nsIDOMBlob*
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Unwrap(JSContext* aCx, JSObject* aObj)
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{
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return GetPrivate(aObj);
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}
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static JSBool
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Construct(JSContext* aCx, unsigned aArgc, jsval* aVp)
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{
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nsRefPtr<nsDOMMultipartFile> file = new nsDOMMultipartFile();
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nsresult rv = file->InitBlob(aCx, aArgc, JS_ARGV(aCx, aVp), Unwrap);
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if (NS_FAILED(rv)) {
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ThrowDOMExceptionForNSResult(aCx, rv);
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return false;
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}
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JSObject* obj = file::CreateBlob(aCx, file);
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if (!obj) {
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return false;
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}
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JS_SET_RVAL(aCx, aVp, OBJECT_TO_JSVAL(obj));
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return true;
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}
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static void
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Finalize(JSFreeOp* aFop, JSObject* aObj)
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{
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JS_ASSERT(JS_GetClass(aObj) == &sClass);
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nsIDOMBlob* blob = GetPrivate(aObj);
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NS_IF_RELEASE(blob);
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}
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static JSBool
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GetSize(JSContext* aCx, JSHandleObject aObj, JSHandleId aIdval, JSMutableHandleValue aVp)
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{
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nsIDOMBlob* blob = GetInstancePrivate(aCx, aObj, "size");
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if (!blob) {
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return false;
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}
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uint64_t size;
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if (NS_FAILED(blob->GetSize(&size))) {
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ThrowDOMExceptionForNSResult(aCx, NS_ERROR_DOM_FILE_NOT_READABLE_ERR);
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return false;
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}
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aVp.set(JS_NumberValue(double(size)));
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return true;
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}
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static JSBool
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GetType(JSContext* aCx, JSHandleObject aObj, JSHandleId aIdval, JSMutableHandleValue aVp)
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{
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nsIDOMBlob* blob = GetInstancePrivate(aCx, aObj, "type");
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if (!blob) {
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return false;
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}
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nsString type;
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if (NS_FAILED(blob->GetType(type))) {
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ThrowDOMExceptionForNSResult(aCx, NS_ERROR_DOM_FILE_NOT_READABLE_ERR);
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return false;
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}
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JSString* jsType = JS_NewUCStringCopyN(aCx, type.get(), type.Length());
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if (!jsType) {
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return false;
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}
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aVp.set(STRING_TO_JSVAL(jsType));
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return true;
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}
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static JSBool
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Slice(JSContext* aCx, unsigned aArgc, jsval* aVp)
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{
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JSObject* obj = JS_THIS_OBJECT(aCx, aVp);
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if (!obj) {
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return false;
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}
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nsIDOMBlob* blob = GetInstancePrivate(aCx, obj, "slice");
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if (!blob) {
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return false;
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}
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double start = 0, end = 0;
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JSString* jsContentType = JS_GetEmptyString(JS_GetRuntime(aCx));
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if (!JS_ConvertArguments(aCx, aArgc, JS_ARGV(aCx, aVp), "/IIS", &start,
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&end, &jsContentType)) {
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return false;
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}
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nsDependentJSString contentType;
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if (!contentType.init(aCx, jsContentType)) {
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return false;
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}
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uint8_t optionalArgc = aArgc;
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nsCOMPtr<nsIDOMBlob> rtnBlob;
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if (NS_FAILED(blob->Slice(static_cast<uint64_t>(start),
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static_cast<uint64_t>(end),
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contentType, optionalArgc,
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getter_AddRefs(rtnBlob)))) {
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ThrowDOMExceptionForNSResult(aCx, NS_ERROR_DOM_FILE_NOT_READABLE_ERR);
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return false;
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}
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JSObject* rtnObj = file::CreateBlob(aCx, rtnBlob);
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if (!rtnObj) {
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return false;
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}
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JS_SET_RVAL(aCx, aVp, OBJECT_TO_JSVAL(rtnObj));
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return true;
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}
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};
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JSClass Blob::sClass = {
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"Blob",
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JSCLASS_HAS_PRIVATE,
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JS_PropertyStub, JS_DeletePropertyStub, JS_PropertyStub, JS_StrictPropertyStub,
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JS_EnumerateStub, JS_ResolveStub, JS_ConvertStub, Finalize
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};
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const JSPropertySpec Blob::sProperties[] = {
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{ "size", 0, PROPERTY_FLAGS, JSOP_WRAPPER(GetSize), JSOP_WRAPPER(js_GetterOnlyPropertyStub) },
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{ "type", 0, PROPERTY_FLAGS, JSOP_WRAPPER(GetType), JSOP_WRAPPER(js_GetterOnlyPropertyStub) },
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{ 0, 0, 0, JSOP_NULLWRAPPER, JSOP_NULLWRAPPER }
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};
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const JSFunctionSpec Blob::sFunctions[] = {
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JS_FN("slice", Slice, 1, JSPROP_ENUMERATE),
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JS_FS_END
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};
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class File : public Blob
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{
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// File should never be instantiated.
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File();
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~File();
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static JSClass sClass;
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static const JSPropertySpec sProperties[];
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public:
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static JSObject*
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InitClass(JSContext* aCx, JSObject* aObj, JSObject* aParentProto)
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{
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return JS_InitClass(aCx, aObj, aParentProto, &sClass, Construct, 0,
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sProperties, NULL, NULL, NULL);
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}
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static JSObject*
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Create(JSContext* aCx, nsIDOMFile* aFile)
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{
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JS_ASSERT(SameCOMIdentity(static_cast<nsISupports*>(aFile), aFile));
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JSObject* obj = JS_NewObject(aCx, &sClass, NULL, NULL);
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if (obj) {
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JS_SetPrivate(obj, aFile);
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NS_ADDREF(aFile);
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}
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return obj;
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}
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static nsIDOMFile*
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GetPrivate(JSObject* aObj)
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{
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if (aObj) {
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JSClass* classPtr = JS_GetClass(aObj);
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if (classPtr == &sClass) {
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nsISupports* priv = static_cast<nsISupports*>(JS_GetPrivate(aObj));
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nsCOMPtr<nsIDOMFile> file = do_QueryInterface(priv);
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JS_ASSERT_IF(priv, file);
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return file;
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}
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}
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return NULL;
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}
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static JSClass*
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Class()
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{
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return &sClass;
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}
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private:
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static nsIDOMFile*
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GetInstancePrivate(JSContext* aCx, JSObject* aObj, const char* aFunctionName)
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{
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nsIDOMFile* file = GetPrivate(aObj);
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if (file) {
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return file;
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}
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JS_ReportErrorNumber(aCx, js_GetErrorMessage, NULL,
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JSMSG_INCOMPATIBLE_PROTO, sClass.name, aFunctionName,
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JS_GetClass(aObj)->name);
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return NULL;
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}
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static JSBool
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Construct(JSContext* aCx, unsigned aArgc, jsval* aVp)
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{
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JS_ReportErrorNumber(aCx, js_GetErrorMessage, NULL, JSMSG_WRONG_CONSTRUCTOR,
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sClass.name);
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return false;
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}
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static void
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Finalize(JSFreeOp* aFop, JSObject* aObj)
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{
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JS_ASSERT(JS_GetClass(aObj) == &sClass);
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nsIDOMFile* file = GetPrivate(aObj);
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NS_IF_RELEASE(file);
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}
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static JSBool
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GetMozFullPath(JSContext* aCx, JSHandleObject aObj, JSHandleId aIdval, JSMutableHandleValue aVp)
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{
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nsIDOMFile* file = GetInstancePrivate(aCx, aObj, "mozFullPath");
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if (!file) {
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return false;
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}
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nsString fullPath;
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if (GetWorkerPrivateFromContext(aCx)->UsesSystemPrincipal() &&
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NS_FAILED(file->GetMozFullPathInternal(fullPath))) {
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ThrowDOMExceptionForNSResult(aCx, NS_ERROR_DOM_FILE_NOT_READABLE_ERR);
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return false;
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}
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JSString* jsFullPath = JS_NewUCStringCopyN(aCx, fullPath.get(),
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fullPath.Length());
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if (!jsFullPath) {
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return false;
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}
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aVp.set(STRING_TO_JSVAL(jsFullPath));
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return true;
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}
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static JSBool
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GetName(JSContext* aCx, JSHandleObject aObj, JSHandleId aIdval, JSMutableHandleValue aVp)
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{
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nsIDOMFile* file = GetInstancePrivate(aCx, aObj, "name");
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if (!file) {
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return false;
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}
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nsString name;
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if (NS_FAILED(file->GetName(name))) {
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name.Truncate();
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}
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JSString* jsName = JS_NewUCStringCopyN(aCx, name.get(), name.Length());
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if (!jsName) {
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return false;
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}
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aVp.set(STRING_TO_JSVAL(jsName));
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return true;
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}
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static JSBool
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GetLastModifiedDate(JSContext* aCx, JSHandleObject aObj, JSHandleId aIdval, JSMutableHandleValue aVp)
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{
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nsIDOMFile* file = GetInstancePrivate(aCx, aObj, "lastModifiedDate");
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if (!file) {
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return false;
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}
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JS::Value value;
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if (NS_FAILED(file->GetLastModifiedDate(aCx, &value))) {
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return false;
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}
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aVp.set(value);
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return true;
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}
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};
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JSClass File::sClass = {
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"File",
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JSCLASS_HAS_PRIVATE,
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JS_PropertyStub, JS_DeletePropertyStub, JS_PropertyStub, JS_StrictPropertyStub,
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JS_EnumerateStub, JS_ResolveStub, JS_ConvertStub, Finalize
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};
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const JSPropertySpec File::sProperties[] = {
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{ "name", 0, PROPERTY_FLAGS, JSOP_WRAPPER(GetName),
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JSOP_WRAPPER(js_GetterOnlyPropertyStub) },
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{ "lastModifiedDate", 0, PROPERTY_FLAGS, JSOP_WRAPPER(GetLastModifiedDate),
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JSOP_WRAPPER(js_GetterOnlyPropertyStub) },
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{ "mozFullPath", 0, PROPERTY_FLAGS, JSOP_WRAPPER(GetMozFullPath),
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JSOP_WRAPPER(js_GetterOnlyPropertyStub) },
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{ 0, 0, 0, JSOP_NULLWRAPPER, JSOP_NULLWRAPPER }
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};
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nsIDOMBlob*
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Blob::GetPrivate(JSObject* aObj)
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{
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if (aObj) {
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JSClass* classPtr = JS_GetClass(aObj);
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if (classPtr == &sClass || classPtr == File::Class()) {
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nsISupports* priv = static_cast<nsISupports*>(JS_GetPrivate(aObj));
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nsCOMPtr<nsIDOMBlob> blob = do_QueryInterface(priv);
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JS_ASSERT_IF(priv, blob);
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return blob;
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}
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}
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return NULL;
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}
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} // anonymous namespace
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BEGIN_WORKERS_NAMESPACE
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namespace file {
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JSObject*
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CreateBlob(JSContext* aCx, nsIDOMBlob* aBlob)
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{
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return Blob::Create(aCx, aBlob);
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}
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bool
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InitClasses(JSContext* aCx, JSObject* aGlobal)
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{
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JSObject* blobProto = Blob::InitClass(aCx, aGlobal);
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return blobProto && File::InitClass(aCx, aGlobal, blobProto);
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}
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nsIDOMBlob*
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GetDOMBlobFromJSObject(JSObject* aObj)
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{
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return Blob::GetPrivate(aObj);
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}
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JSObject*
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CreateFile(JSContext* aCx, nsIDOMFile* aFile)
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{
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return File::Create(aCx, aFile);
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}
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nsIDOMFile*
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GetDOMFileFromJSObject(JSObject* aObj)
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{
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return File::GetPrivate(aObj);
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}
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} // namespace file
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END_WORKERS_NAMESPACE
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