gecko-dev/lib/libdom/domtext.c

427 строки
10 KiB
C
Исходник Обычный вид История

/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "dom_priv.h"
#include "prlong.h"
/*
* DOM CharacterData, Text and Comment implementations.
*/
/* must start after the DOM_NODE tinyids */
enum {
DOM_CDATA_DATA = -14,
DOM_CDATA_LENGTH = -15
};
static JSBool
cdata_getter(JSContext *cx, JSObject *obj, jsval id, jsval *vp)
{
intN slot;
DOM_CharacterData *cdata;
JSString *str;
if (!JSVAL_IS_INT(id))
return JS_TRUE;
slot = JSVAL_TO_INT(id);
/* Look, ma! Inheritance! */
if (slot <= DOM_NODE_NODENAME &&
slot >= DOM_NODE_HASCHILDNODES) {
return dom_node_getter(cx, obj, id, vp);
}
cdata = (DOM_CharacterData *)JS_GetPrivate(cx, obj);
if (!cdata)
return JS_TRUE;
switch (slot) {
case DOM_CDATA_DATA:
str = JS_NewStringCopyN(cx, cdata->data, cdata->len);
if (!str)
return JS_FALSE;
*vp = STRING_TO_JSVAL(str);
/* XXX cache the string */
break;
case DOM_CDATA_LENGTH:
/* XXX it's a long, see... */
*vp = INT_TO_JSVAL(cdata->len);
break;
default:;
}
return JS_TRUE;
}
static JSBool
cdata_setter(JSContext *cx, JSObject *obj, jsval id, jsval *vp)
{
1998-08-27 13:11:45 +04:00
intN slot;
DOM_CharacterData *cdata;
JSString *str;
1998-08-27 13:11:45 +04:00
if (!JSVAL_IS_INT(id))
return JS_TRUE;
1998-08-27 13:11:45 +04:00
slot = JSVAL_TO_INT(id);
/* Look, ma! Inheritance! */
if (slot <= DOM_NODE_NODENAME &&
slot >= DOM_NODE_HASCHILDNODES) {
return dom_node_setter(cx, obj, id, vp);
}
1998-08-27 13:11:45 +04:00
cdata = (DOM_CharacterData *)JS_GetPrivate(cx, obj);
if (!cdata)
return JS_TRUE;
switch (slot) {
case DOM_CDATA_DATA:
str = JS_ValueToString(cx, *vp);
if (!str)
return JS_FALSE;
XP_FREE(cdata->data);
cdata->data = XP_STRDUP(JS_GetStringBytes(str));
cdata->len = JS_GetStringLength(str);
cdata->notify(cx, cdata, CDATA_REPLACE);
break;
default:;
}
return JS_TRUE;
}
static JSBool
cdata_substringData(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
jsval *vp)
{
JSString *substr;
uint32 offset, count;
DOM_CharacterData *cdata;
if (!JS_ConvertArguments(cx, argc, argv, "uu", &offset, &count))
return JS_FALSE;
cdata = (DOM_CharacterData *)JS_GetPrivate(cx, obj);
if (!cdata) {
*vp = JS_GetEmptyStringValue(cx);
return JS_TRUE;
}
if (offset > cdata->len || offset < 0 || count < 0) {
DOM_SignalException(cx, DOM_INDEX_SIZE_ERR);
return JS_FALSE;
}
if (offset + count > cdata->len)
count = cdata->len - offset;
substr = JS_NewStringCopyN(cx, cdata->data + offset, count);
if (!substr)
return JS_FALSE;
*vp = STRING_TO_JSVAL(substr);
return JS_TRUE;
}
static JSBool
cdata_appendData(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
jsval *vp)
{
JSString *newData;
DOM_CharacterData *cdata;
uint32 newlen;
char *data2;
if (!JS_ConvertArguments(cx, argc, argv, "S", &newData))
return JS_FALSE;
cdata = (DOM_CharacterData *)JS_GetPrivate(cx, obj);
if (!cdata)
return JS_TRUE;
newlen = JS_GetStringLength(newData);
data2 = XP_REALLOC(cdata->data, cdata->len + newlen);
if (!data2)
return JS_FALSE;
XP_MEMCPY(data2 + cdata->len, JS_GetStringBytes(newData), newlen);
cdata->data = data2;
cdata->len += newlen;
return cdata->notify(cx, cdata, CDATA_APPEND);
}
static JSBool
cdata_insertData(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
jsval *vp)
{
uint32 offset, newlen;
JSString *newData;
char *data2;
DOM_CharacterData *cdata;
if (!JS_ConvertArguments(cx, argc, argv, "uS", &offset, &newData))
return JS_FALSE;
cdata = (DOM_CharacterData *)JS_GetPrivate(cx, obj);
if (!cdata)
return JS_TRUE;
if (offset < 0 || offset > cdata->len) {
DOM_SignalException(cx, DOM_INDEX_SIZE_ERR);
return JS_FALSE;
}
newlen = JS_GetStringLength(newData);
data2 = XP_ALLOC(cdata->len + newlen);
if (!data2)
return JS_FALSE;
XP_MEMCPY(data2, cdata->data, offset);
XP_MEMCPY(data2 + offset, JS_GetStringBytes(newData), newlen);
XP_MEMCPY(data2 + offset + newlen, cdata->data + offset,
cdata->len - offset);
XP_FREE(cdata->data);
cdata->data = data2;
cdata->len += newlen;
return cdata->notify(cx, cdata, CDATA_INSERT);
}
static JSBool
cdata_deleteData(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
jsval *vp)
{
uint32 offset, count;
DOM_CharacterData *cdata;
char *data2;
if (!JS_ConvertArguments(cx, argc, argv, "uu", &offset, &count))
return JS_FALSE;
cdata = (DOM_CharacterData *)JS_GetPrivate(cx, obj);
if (!cdata)
return JS_TRUE;
if (offset < 0 || offset > cdata->len || count < 0) {
DOM_SignalException(cx, DOM_INDEX_SIZE_ERR);
return JS_FALSE;
}
if (offset + count > cdata->len)
count = cdata->len - offset;
data2 = XP_ALLOC(cdata->len - count);
if (!data2)
return JS_FALSE;
XP_MEMCPY(data2, cdata->data, offset);
XP_MEMCPY(data2 + offset, cdata->data + offset + count,
cdata->len - offset - count);
XP_FREE(cdata->data);
cdata->data = data2;
cdata->len -= count;
return cdata->notify(cx, cdata, CDATA_DELETE);
}
static JSBool
cdata_replaceData(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
jsval *vp)
{
uint32 offset, count, newlen;
JSString *newData;
DOM_CharacterData *cdata;
char *data2;
if (!JS_ConvertArguments(cx, argc, argv, "uuS", &offset, &count,
&newData))
return JS_FALSE;
cdata = (DOM_CharacterData *)JS_GetPrivate(cx, obj);
if (!cdata)
return JS_TRUE;
if (offset < 0 || offset > cdata->len || count < 0) {
DOM_SignalException(cx, DOM_INDEX_SIZE_ERR);
return JS_FALSE;
}
if (offset + count > cdata->len)
count = cdata->len - offset;
newlen = JS_GetStringLength(newData);
data2 = XP_ALLOC(cdata->len - count + newlen);
if (!data2)
return JS_FALSE;
XP_MEMCPY(data2, cdata->data, offset);
XP_MEMCPY(data2 + offset, JS_GetStringBytes(newData), newlen);
XP_MEMCPY(data2 + offset + newlen, cdata->data + offset + count,
cdata->len - offset - count);
XP_FREE(cdata->data);
cdata->data = data2;
cdata->len += newlen - count;
return cdata->notify(cx, cdata, CDATA_REPLACE);
}
static JSClass DOM_CDataClass = {
"CharacterData", JSCLASS_HAS_PRIVATE,
JS_PropertyStub, JS_PropertyStub, cdata_getter, cdata_setter,
JS_EnumerateStub, JS_ResolveStub, JS_ConvertStub, JS_FinalizeStub
};
static JSPropertySpec cdata_props[] = {
{"data", DOM_CDATA_DATA, JSPROP_ENUMERATE, 0, 0},
{"length", DOM_CDATA_LENGTH, JSPROP_ENUMERATE | JSPROP_READONLY,
0, 0},
{0}
};
static JSFunctionSpec cdata_methods[] = {
{"substringData", cdata_substringData, 2},
{"appendData", cdata_appendData, 1},
{"insertData", cdata_insertData, 2},
{"deleteData", cdata_deleteData, 2},
{"replaceData", cdata_replaceData, 3},
{0}
};
static JSBool
CharacterData(JSContext *cx, JSObject *obj, uintN argc, jsval *argv,
jsval *rval)
{
return JS_TRUE;
}
JSObject *
dom_CharacterDataInit(JSContext *cx, JSObject *scope, JSObject *node_proto)
{
JSObject *proto;
proto = JS_InitClass(cx, scope, node_proto, &DOM_CDataClass,
CharacterData, 0,
cdata_props, cdata_methods,
NULL, NULL);
return proto;
}
/*
* Text
*/
static JSClass DOM_TextClass = {
"Text", JSCLASS_HAS_PRIVATE,
JS_PropertyStub, JS_PropertyStub, cdata_getter, cdata_setter,
JS_EnumerateStub, JS_ResolveStub, JS_ConvertStub, JS_FinalizeStub
};
static JSFunctionSpec text_methods[] = {
{0}
};
JSObject *
DOM_NewTextObject(JSContext *cx, DOM_Text *text)
{
DOM_Node *node = (DOM_Node *)text;
JSObject *obj;
obj = JS_ConstructObject(cx, &DOM_TextClass, NULL, NULL);
if (!obj)
return NULL;
if (!JS_SetPrivate(cx, obj, text)) {
return NULL;
}
node->mocha_object = obj;
return obj;
}
DOM_Text *
DOM_NewText(const char *data, int64 length, DOM_CDataOp notify,
DOM_NodeOps *ops)
{
DOM_Node *node;
DOM_CharacterData *cdata;
int32 nbytes;
DOM_Text *text = XP_NEW_ZAP(DOM_Text);
if (!text)
return NULL;
node = (DOM_Node *)text;
node->type = NODE_TYPE_TEXT;
node->ops = ops;
node->name = "#text";
LL_L2I(nbytes, length);
cdata = (DOM_CharacterData *)text;
cdata->len = length;
cdata->data = XP_ALLOC(nbytes);
cdata->notify = notify;
if (!cdata->data) {
XP_FREE(text);
return NULL;
}
XP_MEMCPY(cdata->data, data, nbytes);
return text;
}
JSObject *
DOM_ObjectForText(JSContext *cx, DOM_Text *text)
{
if (!text)
return NULL;
if (text->cdata.node.mocha_object)
return text->cdata.node.mocha_object;
return DOM_NewTextObject(cx, text);
}
static JSBool
Text(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
{
return JS_TRUE;
}
JSObject *
dom_TextInit(JSContext *cx, JSObject *scope, JSObject *cdata_proto)
{
JSObject *proto;
proto = JS_InitClass(cx, scope, cdata_proto, &DOM_TextClass,
Text, 0,
cdata_props, text_methods,
NULL, NULL);
return proto;
}
/*
* Comment
*/
JSObject *
dom_CommentInit(JSContext *cx, JSObject *scope, JSObject *cdata_proto)
{
/* Do we need a custom proto here? */
return cdata_proto;
}