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+/*
+ * Copyright 2012 Vincent Sanders <vince@netsurf-browser.org>
+ *
+ * This file is part of NetSurf, http://www.netsurf-browser.org/
+ *
+ * NetSurf is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * NetSurf is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "mozjs/jsapi.h"
+
+#include "content/content.h"
+#include "javascript/jsapi.h"
+#include "javascript/js.h"
+
+#include "utils/log.h"
+
+static JSRuntime *rt; /* global runtime */
+
+void js_initialise(void)
+{
+ /* Create a JS runtime. */
+
+#if JS_VERSION >= 180
+ JS_SetCStringsAreUTF8(); /* we prefer our runtime to be utf-8 */
+#endif
+
+ rt = JS_NewRuntime(8L * 1024L * 1024L);
+ LOG(("New runtime handle %p", rt));
+}
+
+void js_finalise(void)
+{
+ if (rt != NULL) {
+ LOG(("destroying runtime handle %p", rt));
+ JS_DestroyRuntime(rt);
+ }
+ JS_ShutDown();
+}
+
+/* The error reporter callback. */
+static void js_reportError(JSContext *cx, const char *message, JSErrorReport *report)
+{
+ LOG(("%s:%u:%s",
+ report->filename ? report->filename : "<no filename>",
+ (unsigned int) report->lineno,
+ message));
+}
+
+jscontext *js_newcontext(void)
+{
+ JSContext *cx;
+
+ if (rt == NULL) {
+ return NULL;
+ }
+
+ cx = JS_NewContext(rt, 8192);
+ if (cx == NULL) {
+ return NULL;
+ }
+ JS_SetOptions(cx, JSOPTION_VAROBJFIX | JSOPTION_JIT );
+ JS_SetVersion(cx, JSVERSION_LATEST);
+ JS_SetErrorReporter(cx, js_reportError);
+
+ LOG(("New Context %p", cx));
+
+ return (jscontext *)cx;
+}
+
+void js_destroycontext(jscontext *ctx)
+{
+ JSContext *cx = (JSContext *)ctx;
+ if (cx != NULL) {
+ LOG(("Destroying Context %p", cx));
+ JS_DestroyContext(cx);
+ }
+}
+
+
+
+/* The class of the global object. */
+static JSClass global_class = {
+ "global",
+ JSCLASS_GLOBAL_FLAGS,
+ JS_PropertyStub,
+ JS_PropertyStub,
+ JS_PropertyStub,
+#if JS_VERSION <= 180
+ JS_PropertyStub,
+#else
+ JS_StrictPropertyStub,
+#endif
+ JS_EnumerateStub,
+ JS_ResolveStub,
+ JS_ConvertStub,
+ JS_FinalizeStub,
+ JSCLASS_NO_OPTIONAL_MEMBERS
+};
+
+jsobject *js_newcompartment(jscontext *ctx, struct content* c)
+{
+ JSContext *cx = (JSContext *)ctx;
+ JSObject *global;
+
+ if (cx == NULL) {
+ return NULL;
+ }
+
+#if JS_VERSION <= 180
+ global = JS_NewObject(cx, &global_class, NULL, NULL);
+ if (global == NULL) {
+ return NULL;
+ }
+ JS_SetGlobalObject(cx, global);
+#else
+ global = JS_NewCompartmentAndGlobalObject(cx, &global_class, NULL);
+ if (global == NULL) {
+ return NULL;
+ }
+#endif
+
+ JS_SetContextPrivate(cx, c); /* private pointer to content */
+
+ jsapi_new_globalfunc(cx, global);
+
+ /* Populate the global object with the standard globals, like
+ Object and Array. */
+ if (!JS_InitStandardClasses(cx, global)) {
+ return NULL;
+ }
+
+ LOG(("Created new global object %p", global));
+
+ return (jsobject *)global;
+}
+
+bool js_exec(jscontext *ctx, const char *txt, int txtlen)
+{
+ JSContext *cx = (JSContext *)ctx;
+
+ //LOG(("%p \"%s\"",cx ,txt));
+
+ if (ctx == NULL) {
+ return false;
+ }
+
+ if (txt == NULL) {
+ return false;
+ }
+
+ if (txtlen == 0) {
+ return false;
+ }
+
+ if (JS_EvaluateScript(cx,
+ JS_GetGlobalObject(cx),
+ txt, txtlen,
+ "<head>", 0, NULL) == JS_TRUE) {
+ return true;
+ }
+
+ return false;
+}