зеркало из https://github.com/mozilla/pjs.git
257 строки
7.1 KiB
C
257 строки
7.1 KiB
C
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#define XMLJS_INTERNAL
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#include "xmljs.h"
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#undef XMLJS_INTERNAL
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static void
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StartElementHandler(void *userdata, const char *name, const char **atts)
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{
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XMLCallback *cb = (XMLCallback *)userdata;
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int i;
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JSString *namestr = NULL, *attstr = NULL;
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JSObject *attobj = NULL;
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JSContext *cx = cb->cx;
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jsval argv[2];
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jsval rval;
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JSFunction *fun;
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if (!JS_GetProperty(cx, cb->obj, "startElement", &rval) ||
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JSVAL_IS_VOID(rval) || JSVAL_IS_NULL(rval))
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return;
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fun = JS_ValueToFunction(cx, rval);
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if (!fun)
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return;
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/* oh, for local roots */
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JS_AddRoot(cx, &namestr);
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JS_AddRoot(cx, &attobj);
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JS_AddRoot(cx, &attstr);
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namestr = JS_NewStringCopyZ(cx, name);
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if (atts[0]) {
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if (!JS_EvaluateScript(cx, JS_GetGlobalObject(cx), xmljs_newObj_str,
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xmljs_newObj_size,
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"XMLParser internal", 0, &rval)) {
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JS_ReportError(cx, "failed to create attobj");
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goto out;
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}
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attobj = JSVAL_TO_OBJECT(rval);
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for (i = 0; atts[i]; i+=2) {
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attstr = JS_NewStringCopyZ(cx, atts[i+1]);
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if (!attstr ||
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!JS_DefineProperty(cx, attobj, atts[i],
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STRING_TO_JSVAL(attstr),
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NULL, NULL, JSPROP_ENUMERATE)) {
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JS_ReportError(cx, "defining att prop %s failed", atts[i]);
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goto out;
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}
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}
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}
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argv[0] = STRING_TO_JSVAL(namestr);
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argv[1] = OBJECT_TO_JSVAL(attobj);
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JS_CallFunction(cx, cb->obj, fun, 2, argv, &rval);
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out:
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JS_RemoveRoot(cx, &namestr);
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JS_RemoveRoot(cx, &attstr);
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JS_RemoveRoot(cx, &attobj);
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}
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static void
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EndElementHandler(void *userdata, const char *name)
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{
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XMLCallback *cb = (XMLCallback *)userdata;
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JSString *namestr = NULL;
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JSContext *cx = cb->cx;
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jsval argv[1];
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jsval rval;
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JSFunction *fun;
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if (!JS_GetProperty(cx, cb->obj, "endElement", &rval) ||
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JSVAL_IS_VOID(rval) || JSVAL_IS_NULL(rval))
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return;
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fun = JS_ValueToFunction(cx, rval);
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if (!fun)
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return;
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/* oh, for local roots */
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JS_AddRoot(cx, &namestr);
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namestr = JS_NewStringCopyZ(cx, name);
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if (!namestr)
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goto out;
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argv[0] = STRING_TO_JSVAL(namestr);
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JS_CallFunction(cx, cb->obj, fun, 1, argv, &rval);
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out:
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JS_RemoveRoot(cx, &namestr);
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}
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static void
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CharacterDataHandler(void *userdata, const char *s, int len)
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{
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XMLCallback *cb = (XMLCallback *)userdata;
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JSString *cdatastr = NULL;
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JSContext *cx = cb->cx;
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jsval argv[1];
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jsval rval;
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JSFunction *fun;
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if (!JS_GetProperty(cx, cb->obj, "characterData", &rval) ||
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JSVAL_IS_VOID(rval) || JSVAL_IS_NULL(rval))
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return;
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fun = JS_ValueToFunction(cx, rval);
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if (!fun)
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return;
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/* oh, for local roots */
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JS_AddRoot(cx, &cdatastr);
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cdatastr = JS_NewStringCopyZ(cx, s);
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if (!cdatastr)
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goto out;
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argv[0] = STRING_TO_JSVAL(cdatastr);
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JS_CallFunction(cx, cb->obj, fun, 1, argv, &rval);
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out:
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JS_RemoveRoot(cx, &cdatastr);
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}
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static void
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ProcessingInstructionHandler(void *userdata, const char *target,
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const char *data)
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{
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XMLCallback *cb = (XMLCallback *)userdata;
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JSString *targetstr = NULL, *datastr = NULL;
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JSContext *cx = cb->cx;
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jsval argv[2];
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jsval rval;
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JSFunction *fun;
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if (!JS_GetProperty(cx, cb->obj, "processingInstruction", &rval) ||
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JSVAL_IS_VOID(rval) || JSVAL_IS_NULL(rval))
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return;
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fun = JS_ValueToFunction(cx, rval);
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if (!fun)
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return;
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JS_AddRoot(cx, &targetstr);
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JS_AddRoot(cx, &datastr);
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targetstr = JS_NewStringCopyZ(cx, target);
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if (!targetstr)
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goto out;
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datastr = JS_NewStringCopyZ(cx, data);
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if (!datastr)
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goto out;
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argv[0] = STRING_TO_JSVAL(targetstr);
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argv[1] = STRING_TO_JSVAL(datastr);
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JS_CallFunction(cx, cb->obj, fun, 2, argv, &rval);
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out:
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JS_RemoveRoot(cx, &targetstr);
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JS_RemoveRoot(cx, &datastr);
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}
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static JSBool
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XMLParser(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
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{
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XMLCallback *cb = JS_malloc(cx, sizeof(XMLCallback));
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if (!cb)
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return JS_FALSE;
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cb->start = StartElementHandler;
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cb->end = EndElementHandler;
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cb->cdata = CharacterDataHandler;
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cb->processing = ProcessingInstructionHandler;
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cb->xml = NULL;
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cb->obj = obj;
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cb->preParse = cb->postParse = NULL;
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cb->cx = cx; /* XXX obj can persist longer than cx *sigh* */
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return JS_SetPrivate(cx, obj, (void *)cb);
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}
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static void
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xmlparser_finalize(JSContext *cx, JSObject *obj)
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{
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XMLCallback *cb;
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cb = (XMLCallback *)JS_GetPrivate(cx, obj);
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if (!cb)
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return;
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JS_free(cx, cb);
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}
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JSClass XMLParser_class = {
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"XMLParser", JSCLASS_HAS_PRIVATE,
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JS_PropertyStub, JS_PropertyStub, JS_PropertyStub, JS_PropertyStub,
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JS_EnumerateStub, JS_ResolveStub, JS_ConvertStub, xmlparser_finalize
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};
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JSFunctionSpec xmlparser_funcs[] = {
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{0}
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};
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JSPropertySpec xmlparser_props[] = {
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{0}
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};
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JSBool
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XMLParser_Init(JSContext *cx, JSObject *obj, JSObject *parent_proto)
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{
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JSObject *proto = JS_InitClass(cx, obj, parent_proto, &XMLParser_class,
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XMLParser, 1,
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xmlparser_props, xmlparser_funcs,
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NULL, NULL);
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return proto &&
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JS_DefineProperty(cx, proto, "startElement", JSVAL_NULL, NULL, NULL,
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JSPROP_ENUMERATE) &&
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JS_DefineProperty(cx, proto, "endElement", JSVAL_NULL, NULL, NULL,
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JSPROP_ENUMERATE) &&
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JS_DefineProperty(cx, proto, "characterData", JSVAL_NULL, NULL, NULL,
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JSPROP_ENUMERATE) &&
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JS_DefineProperty(cx, proto, "processingInstruction", JSVAL_NULL,
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NULL, NULL, JSPROP_ENUMERATE);
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}
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