prerror.c

Netscape NSPR库源码

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 
 * The contents of this file are subject to the Mozilla Public
 * License Version 1.1 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.mozilla.org/MPL/
 * 
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 * 
 * The Original Code is the Netscape Portable Runtime (NSPR).
 * 
 * The Initial Developer of the Original Code is Netscape
 * Communications Corporation.  Portions created by Netscape are 
 * Copyright (C) 1998-2000 Netscape Communications Corporation.  All
 * Rights Reserved.
 * 
 * Contributor(s):
 * 
 * Alternatively, the contents of this file may be used under the
 * terms of the GNU General Public License Version 2 or later (the
 * "GPL"), in which case the provisions of the GPL are applicable 
 * instead of those above.  If you wish to allow use of your 
 * version of this file only under the terms of the GPL and not to
 * allow others to use your version of this file under the MPL,
 * indicate your decision by deleting the provisions above and
 * replace them with the notice and other provisions required by
 * the GPL.  If you do not delete the provisions above, a recipient
 * may use your version of this file under either the MPL or the
 * GPL.
 */

#include "primpl.h"

#include <string.h>
#include <stdlib.h>

PR_IMPLEMENT(PRErrorCode) PR_GetError(void)
{
    PRThread *thread = PR_GetCurrentThread();
    return thread->errorCode;
}

PR_IMPLEMENT(PRInt32) PR_GetOSError(void)
{
    PRThread *thread = PR_GetCurrentThread();
    return thread->osErrorCode;
}

PR_IMPLEMENT(void) PR_SetError(PRErrorCode code, PRInt32 osErr)
{
    PRThread *thread = PR_GetCurrentThread();
    thread->errorCode = code;
    thread->osErrorCode = osErr;
    thread->errorStringLength = 0;
}

PR_IMPLEMENT(void) PR_SetErrorText(PRIntn textLength, const char *text)
{
    PRThread *thread = PR_GetCurrentThread();

    if (0 == textLength)
    {
	    if (NULL != thread->errorString)
	        PR_DELETE(thread->errorString);
	    thread->errorStringSize = 0;
    }
    else
    {
	    PRIntn size = textLength + 31;  /* actual length to allocate. Plus a little extra */
        if (thread->errorStringSize < textLength+1)  /* do we have room? */
        {
	        if (NULL != thread->errorString)
	            PR_DELETE(thread->errorString);
		    thread->errorString = (char*)PR_MALLOC(size);
            if ( NULL == thread->errorString ) {
                thread->errorStringSize = 0;
                thread->errorStringLength = 0;
                return;
            }
            thread->errorStringSize = size;
	    }
        memcpy(thread->errorString, text, textLength+1 );
    }
    thread->errorStringLength = textLength;
}

PR_IMPLEMENT(PRInt32) PR_GetErrorTextLength(void)
{
    PRThread *thread = PR_GetCurrentThread();
    return thread->errorStringLength;
}  /* PR_GetErrorTextLength */

PR_IMPLEMENT(PRInt32) PR_GetErrorText(char *text)
{
    PRThread *thread = PR_GetCurrentThread();
    if (0 != thread->errorStringLength)
        memcpy(text, thread->errorString, thread->errorStringLength+1);
    return thread->errorStringLength;
}  /* PR_GetErrorText */