gecko-dev/xpcom/glue/nsID.cpp

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/*
* The contents of this file are subject to the Netscape 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/NPL/
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*
* 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.
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*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
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*/
#include "nsID.h"
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#include "prprf.h"
#include "prmem.h"
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static const char gIDFormat[] =
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"{%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x}";
static const char gIDFormat2[] =
"%08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x";
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/*
* Turns a {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx} string into
* an nsID
*/
NS_COM PRBool nsID::Parse(const char *aIDStr)
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{
PRInt32 count = 0;
PRInt32 n1, n2, n3[8];
PRInt32 n0;
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if (NULL != aIDStr) {
count = PR_sscanf(aIDStr,
(aIDStr[0] == '{') ? gIDFormat : gIDFormat2,
&n0, &n1, &n2,
&n3[0],&n3[1],&n3[2],&n3[3],
&n3[4],&n3[5],&n3[6],&n3[7]);
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m0 = (PRInt32) n0;
m1 = (PRInt16) n1;
m2 = (PRInt16) n2;
for (int i = 0; i < 8; i++) {
m3[i] = (PRInt8) n3[i];
}
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}
return (PRBool) (count == 11);
}
/*
* Returns an allocated string in {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}
* format. Caller should delete [] the string.
*/
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NS_COM char *nsID::ToString() const
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{
char *res = (char*)PR_Malloc(39); // use PR_Malloc if this is to be freed with nsCRT::free
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if (res != NULL) {
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PR_snprintf(res, 39, gIDFormat,
m0, (PRUint32) m1, (PRUint32) m2,
(PRUint32) m3[0], (PRUint32) m3[1], (PRUint32) m3[2],
(PRUint32) m3[3], (PRUint32) m3[4], (PRUint32) m3[5],
(PRUint32) m3[6], (PRUint32) m3[7]);
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}
return res;
}