netsurf/javascript/jsapi.c
2012-10-24 19:00:24 +01:00

162 lines
3.5 KiB
C

/*
* 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 "javascript/jsapi.h"
#include "content/content.h"
#include "javascript/content.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));
/* register script content handler */
javascript_init();
}
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);
}
}
jsobject *js_newcompartment(jscontext *ctx, void *win_priv, void *doc_priv)
{
JSContext *cx = (JSContext *)ctx;
JSObject *window_obj = NULL;
JSObject *document_obj;
JSObject *navigator_obj;
JSObject *console_obj;
struct html_content *htmlc = doc_priv;
if (cx == NULL)
goto js_newcompartment_fail;
/* create the window object as the global */
window_obj = jsapi_new_window(cx, NULL, win_priv);
if (window_obj == NULL)
goto js_newcompartment_fail;
/* attach the subclasses off the window global */
document_obj = jsapi_new_Document(cx, window_obj, htmlc->document, htmlc);
if (document_obj == NULL)
goto js_newcompartment_fail;
navigator_obj = jsapi_new_navigator(cx, window_obj);
if (navigator_obj == NULL)
goto js_newcompartment_fail;
/* @todo forms, history, location */
console_obj = jsapi_new_console(cx, window_obj);
if (console_obj == NULL)
goto js_newcompartment_fail;
return (jsobject *)window_obj;
js_newcompartment_fail:
LOG(("New compartment creation failed"));
return NULL;
}
bool js_exec(jscontext *ctx, const char *txt, size_t 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;
}