зеркало из https://github.com/mozilla/pjs.git
566 строки
15 KiB
C
566 строки
15 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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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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/*
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* JavaScript Debugging support - Source Text functions
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*/
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#include <ctype.h>
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#include "jsd.h"
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#ifdef DEBUG
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void JSD_ASSERT_VALID_SOURCE_TEXT(JSDSourceText* jsdsrc)
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{
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JS_ASSERT(jsdsrc);
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JS_ASSERT(jsdsrc->url);
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}
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#endif
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/***************************************************************************/
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/* XXX add notification */
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static void
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_clearText(JSDContext* jsdc, JSDSourceText* jsdsrc)
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{
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if( jsdsrc->text )
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free(jsdsrc->text);
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jsdsrc->text = NULL;
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jsdsrc->textLength = 0;
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jsdsrc->textSpace = 0;
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jsdsrc->status = JSD_SOURCE_CLEARED;
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jsdsrc->dirty = JS_TRUE;
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jsdsrc->alterCount = jsdc->sourceAlterCount++ ;
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jsdsrc->doingEval = JS_FALSE;
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}
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static JSBool
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_appendText(JSDContext* jsdc, JSDSourceText* jsdsrc,
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const char* text, size_t length)
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{
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#define MEMBUF_GROW 1000
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unsigned neededSize = jsdsrc->textLength + length;
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if( neededSize > jsdsrc->textSpace )
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{
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char* newBuf;
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unsigned iNewSize;
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/* if this is the first alloc, the req might be all that's needed*/
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if( ! jsdsrc->textSpace )
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iNewSize = length;
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else
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iNewSize = (neededSize * 5 / 4) + MEMBUF_GROW;
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newBuf = (char*) realloc(jsdsrc->text, iNewSize);
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if( ! newBuf )
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{
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/* try again with the minimal size really asked for */
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iNewSize = neededSize;
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newBuf = (char*) realloc(jsdsrc->text, iNewSize);
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if( ! newBuf )
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{
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/* out of memory */
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_clearText( jsdc, jsdsrc );
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jsdsrc->status = JSD_SOURCE_FAILED;
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return JS_FALSE;
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}
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}
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jsdsrc->text = newBuf;
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jsdsrc->textSpace = iNewSize;
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}
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memcpy(jsdsrc->text + jsdsrc->textLength, text, length);
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jsdsrc->textLength += length;
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return JS_TRUE;
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}
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static JSDSourceText*
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_newSource(JSDContext* jsdc, char* url)
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{
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JSDSourceText* jsdsrc = (JSDSourceText*)calloc(1,sizeof(JSDSourceText));
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if( ! jsdsrc )
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return NULL;
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jsdsrc->url = url;
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jsdsrc->status = JSD_SOURCE_INITED;
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jsdsrc->dirty = JS_TRUE;
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jsdsrc->alterCount = jsdc->sourceAlterCount++ ;
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return jsdsrc;
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}
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static void
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_destroySource(JSDContext* jsdc, JSDSourceText* jsdsrc)
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{
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JS_ASSERT(NULL == jsdsrc->text); /* must _clearText() first */
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free(jsdsrc->url);
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free(jsdsrc);
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}
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static void
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_removeSource(JSDContext* jsdc, JSDSourceText* jsdsrc)
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{
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JS_REMOVE_LINK(&jsdsrc->links);
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_clearText(jsdc, jsdsrc);
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_destroySource(jsdc, jsdsrc);
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}
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static JSDSourceText*
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_addSource(JSDContext* jsdc, char* url)
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{
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JSDSourceText* jsdsrc = _newSource(jsdc, url);
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if( ! jsdsrc )
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return NULL;
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JS_INSERT_LINK(&jsdsrc->links, &jsdc->sources);
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return jsdsrc;
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}
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static void
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_moveSourceToFront(JSDContext* jsdc, JSDSourceText* jsdsrc)
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{
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JS_REMOVE_LINK(&jsdsrc->links);
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JS_INSERT_LINK(&jsdsrc->links, &jsdc->sources);
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}
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static void
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_moveSourceToRemovedList(JSDContext* jsdc, JSDSourceText* jsdsrc)
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{
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_clearText(jsdc, jsdsrc);
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JS_REMOVE_LINK(&jsdsrc->links);
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JS_INSERT_LINK(&jsdsrc->links, &jsdc->removedSources);
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}
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static void
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_removeSourceFromRemovedList( JSDContext* jsdc, JSDSourceText* jsdsrc )
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{
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JS_REMOVE_LINK(&jsdsrc->links);
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_destroySource( jsdc, jsdsrc );
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}
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static JSBool
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_isSourceInSourceList(JSDContext* jsdc, JSDSourceText* jsdsrcToFind)
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{
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JSDSourceText *jsdsrc;
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for( jsdsrc = (JSDSourceText*)jsdc->sources.next;
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jsdsrc != (JSDSourceText*)&jsdc->sources;
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jsdsrc = (JSDSourceText*)jsdsrc->links.next )
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{
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if( jsdsrc == jsdsrcToFind )
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return JS_TRUE;
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}
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return JS_FALSE;
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}
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/* compare strings in a case insensitive manner with a length limit
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*/
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static int
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strncasecomp (const char* one, const char * two, int n)
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{
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const char *pA;
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const char *pB;
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for(pA=one, pB=two;; pA++, pB++)
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{
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int tmp;
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if (pA == one+n)
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return 0;
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if (!(*pA && *pB))
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return *pA - *pB;
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tmp = tolower(*pA) - tolower(*pB);
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if (tmp)
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return tmp;
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}
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}
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static char file_url_prefix[] = "file:";
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#define FILE_URL_PREFIX_LEN (sizeof file_url_prefix - 1)
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char*
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jsd_BuildNormalizedURL( const char* url_string )
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{
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char *new_url_string;
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if( ! url_string )
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return NULL;
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if (!strncasecomp(url_string, file_url_prefix, FILE_URL_PREFIX_LEN) &&
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url_string[FILE_URL_PREFIX_LEN + 0] == '/' &&
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url_string[FILE_URL_PREFIX_LEN + 1] == '/') {
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new_url_string = JS_smprintf("%s%s",
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file_url_prefix,
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url_string + FILE_URL_PREFIX_LEN + 2);
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} else {
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new_url_string = strdup(url_string);
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}
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return new_url_string;
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}
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/***************************************************************************/
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void
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jsd_DestroyAllSources( JSDContext* jsdc )
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{
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JSDSourceText *jsdsrc;
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JSDSourceText *next;
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for( jsdsrc = (JSDSourceText*)jsdc->sources.next;
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jsdsrc != (JSDSourceText*)&jsdc->sources;
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jsdsrc = next )
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{
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next = (JSDSourceText*)jsdsrc->links.next;
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_removeSource( jsdc, jsdsrc );
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}
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for( jsdsrc = (JSDSourceText*)jsdc->removedSources.next;
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jsdsrc != (JSDSourceText*)&jsdc->removedSources;
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jsdsrc = next )
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{
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next = (JSDSourceText*)jsdsrc->links.next;
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_removeSourceFromRemovedList( jsdc, jsdsrc );
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}
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}
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JSDSourceText*
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jsd_IterateSources(JSDContext* jsdc, JSDSourceText **iterp)
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{
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JSDSourceText *jsdsrc = *iterp;
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if( !jsdsrc )
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jsdsrc = (JSDSourceText *)jsdc->sources.next;
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if( jsdsrc == (JSDSourceText *)&jsdc->sources )
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return NULL;
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*iterp = (JSDSourceText *)jsdsrc->links.next;
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return jsdsrc;
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}
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JSDSourceText*
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jsd_FindSourceForURL(JSDContext* jsdc, const char* url)
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{
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JSDSourceText *jsdsrc;
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for( jsdsrc = (JSDSourceText *)jsdc->sources.next;
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jsdsrc != (JSDSourceText *)&jsdc->sources;
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jsdsrc = (JSDSourceText *)jsdsrc->links.next )
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{
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if( 0 == strcmp(jsdsrc->url, url) )
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return jsdsrc;
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}
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return NULL;
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}
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const char*
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jsd_GetSourceURL(JSDContext* jsdc, JSDSourceText* jsdsrc)
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{
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return jsdsrc->url;
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}
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JSBool
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jsd_GetSourceText(JSDContext* jsdc, JSDSourceText* jsdsrc,
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const char** ppBuf, int* pLen )
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{
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*ppBuf = jsdsrc->text;
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*pLen = jsdsrc->textLength;
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return JS_TRUE;
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}
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void
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jsd_ClearSourceText(JSDContext* jsdc, JSDSourceText* jsdsrc)
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{
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if( JSD_SOURCE_INITED != jsdsrc->status &&
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JSD_SOURCE_PARTIAL != jsdsrc->status )
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{
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_clearText(jsdc, jsdsrc);
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}
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}
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JSDSourceStatus
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jsd_GetSourceStatus(JSDContext* jsdc, JSDSourceText* jsdsrc)
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{
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return jsdsrc->status;
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}
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JSBool
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jsd_IsSourceDirty(JSDContext* jsdc, JSDSourceText* jsdsrc)
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{
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return jsdsrc->dirty;
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}
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void
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jsd_SetSourceDirty(JSDContext* jsdc, JSDSourceText* jsdsrc, JSBool dirty)
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{
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jsdsrc->dirty = dirty;
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}
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unsigned
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jsd_GetSourceAlterCount(JSDContext* jsdc, JSDSourceText* jsdsrc)
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{
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return jsdsrc->alterCount;
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}
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unsigned
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jsd_IncrementSourceAlterCount(JSDContext* jsdc, JSDSourceText* jsdsrc)
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{
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return jsdsrc->alterCount = jsdc->sourceAlterCount++;
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}
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/***************************************************************************/
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#if defined(DEBUG) && 0
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void DEBUG_ITERATE_SOURCES( JSDContext* jsdc )
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{
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JSDSourceText* iterp = NULL;
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JSDSourceText* jsdsrc = NULL;
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int dummy;
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while( NULL != (jsdsrc = jsd_IterateSources(jsdc, &iterp)) )
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{
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const char* url;
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const char* text;
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int len;
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JSBool dirty;
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JSDStreamStatus status;
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JSBool gotSrc;
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url = JSD_GetSourceURL(jsdc, jsdsrc);
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dirty = JSD_IsSourceDirty(jsdc, jsdsrc);
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status = JSD_GetSourceStatus(jsdc, jsdsrc);
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gotSrc = JSD_GetSourceText(jsdc, jsdsrc, &text, &len );
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dummy = 0; /* gives us a line to set breakpoint... */
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}
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}
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#else
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#define DEBUG_ITERATE_SOURCES(x) ((void)x)
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#endif
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/***************************************************************************/
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JSDSourceText*
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jsd_NewSourceText(JSDContext* jsdc, const char* url)
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{
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JSDSourceText* jsdsrc;
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char* new_url_string;
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JSD_LOCK_SOURCE_TEXT(jsdc);
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#ifdef LIVEWIRE
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new_url_string = url; /* we take ownership of alloc'd string */
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#else
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new_url_string = jsd_BuildNormalizedURL(url);
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#endif
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if( ! new_url_string )
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return NULL;
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jsdsrc = jsd_FindSourceForURL(jsdc, new_url_string);
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if( jsdsrc )
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{
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if( jsdsrc->doingEval )
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{
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free(new_url_string);
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JSD_UNLOCK_SOURCE_TEXT(jsdc);
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return NULL;
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}
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else
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_moveSourceToRemovedList(jsdc, jsdsrc);
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}
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jsdsrc = _addSource( jsdc, new_url_string );
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JSD_UNLOCK_SOURCE_TEXT(jsdc);
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return jsdsrc;
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}
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JSDSourceText*
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jsd_AppendSourceText(JSDContext* jsdc,
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JSDSourceText* jsdsrc,
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const char* text, /* *not* zero terminated */
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size_t length,
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JSDSourceStatus status)
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{
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JSD_LOCK_SOURCE_TEXT(jsdc);
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if( jsdsrc->doingEval )
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{
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JSD_UNLOCK_SOURCE_TEXT(jsdc);
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return NULL;
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}
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if( ! _isSourceInSourceList( jsdc, jsdsrc ) )
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{
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_removeSourceFromRemovedList( jsdc, jsdsrc );
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JSD_UNLOCK_SOURCE_TEXT(jsdc);
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return NULL;
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}
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if( text && length && ! _appendText( jsdc, jsdsrc, text, length ) )
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{
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jsdsrc->dirty = JS_TRUE;
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jsdsrc->alterCount = jsdc->sourceAlterCount++ ;
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jsdsrc->status = JSD_SOURCE_FAILED;
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_moveSourceToRemovedList(jsdc, jsdsrc);
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JSD_UNLOCK_SOURCE_TEXT(jsdc);
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return NULL;
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}
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jsdsrc->dirty = JS_TRUE;
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jsdsrc->alterCount = jsdc->sourceAlterCount++ ;
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jsdsrc->status = status;
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DEBUG_ITERATE_SOURCES(jsdc);
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JSD_UNLOCK_SOURCE_TEXT(jsdc);
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return jsdsrc;
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}
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JSDSourceText*
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jsd_AppendUCSourceText(JSDContext* jsdc,
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JSDSourceText* jsdsrc,
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const jschar* text, /* *not* zero terminated */
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size_t length,
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JSDSourceStatus status)
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{
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#define UNICODE_TRUNCATE_BUF_SIZE 1024
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static char* buf = NULL;
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int remaining = length;
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if(!text || !length)
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return jsd_AppendSourceText(jsdc, jsdsrc, NULL, 0, status);
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JSD_LOCK_SOURCE_TEXT(jsdc);
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if(!buf)
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{
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buf = malloc(UNICODE_TRUNCATE_BUF_SIZE);
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if(!buf)
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{
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JSD_UNLOCK_SOURCE_TEXT(jsdc);
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return NULL;
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}
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}
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while(remaining && jsdsrc) {
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int bytes = JS_MIN(remaining, UNICODE_TRUNCATE_BUF_SIZE);
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int i;
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for(i = 0; i < bytes; i++)
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buf[i] = (const char) *(text++);
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jsdsrc = jsd_AppendSourceText(jsdc,jsdsrc,
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buf, bytes,
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JSD_SOURCE_PARTIAL);
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remaining -= bytes;
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}
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if(jsdsrc && status != JSD_SOURCE_PARTIAL)
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jsdsrc = jsd_AppendSourceText(jsdc, jsdsrc, NULL, 0, status);
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JSD_UNLOCK_SOURCE_TEXT(jsdc);
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return jsdsrc;
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}
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/* convienence function for adding complete source of url in one call */
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JSBool
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jsd_AddFullSourceText(JSDContext* jsdc,
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const char* text, /* *not* zero terminated */
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size_t length,
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const char* url)
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{
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JSDSourceText* jsdsrc;
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JSD_LOCK_SOURCE_TEXT(jsdc);
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jsdsrc = jsd_NewSourceText(jsdc, url);
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if( jsdsrc )
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jsdsrc = jsd_AppendSourceText(jsdc, jsdsrc,
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text, length, JSD_SOURCE_PARTIAL );
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if( jsdsrc )
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jsdsrc = jsd_AppendSourceText(jsdc, jsdsrc,
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NULL, 0, JSD_SOURCE_COMPLETED );
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JSD_UNLOCK_SOURCE_TEXT(jsdc);
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return jsdsrc ? JS_TRUE : JS_FALSE;
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}
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/***************************************************************************/
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void
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jsd_StartingEvalUsingFilename(JSDContext* jsdc, const char* url)
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{
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JSDSourceText* jsdsrc;
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/* NOTE: We leave it locked! */
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JSD_LOCK_SOURCE_TEXT(jsdc);
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jsdsrc = jsd_FindSourceForURL(jsdc, url);
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if(jsdsrc)
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{
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#if 0
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#ifndef JSD_LOWLEVEL_SOURCE
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JS_ASSERT(! jsdsrc->doingEval);
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#endif
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#endif
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jsdsrc->doingEval = JS_TRUE;
|
|
}
|
|
}
|
|
|
|
void
|
|
jsd_FinishedEvalUsingFilename(JSDContext* jsdc, const char* url)
|
|
{
|
|
JSDSourceText* jsdsrc;
|
|
|
|
/* NOTE: We ASSUME it is locked! */
|
|
|
|
jsdsrc = jsd_FindSourceForURL(jsdc, url);
|
|
if(jsdsrc)
|
|
{
|
|
#if 0
|
|
#ifndef JSD_LOWLEVEL_SOURCE
|
|
/*
|
|
* when using this low level source addition, this jsdsrc might
|
|
* not have existed before the eval, but does exist now (without
|
|
* this flag set!)
|
|
*/
|
|
JS_ASSERT(jsdsrc->doingEval);
|
|
#endif
|
|
#endif
|
|
jsdsrc->doingEval = JS_FALSE;
|
|
}
|
|
|
|
JSD_UNLOCK_SOURCE_TEXT(jsdc);
|
|
}
|