зеркало из https://github.com/mozilla/pjs.git
153 строки
5.0 KiB
C++
153 строки
5.0 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* ***** BEGIN LICENSE BLOCK *****
|
|
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
|
|
*
|
|
* 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 mozilla.org code.
|
|
*
|
|
* The Initial Developer of the Original Code is
|
|
* Netscape Communications Corporation.
|
|
* Portions created by the Initial Developer are Copyright (C) 1998
|
|
* the Initial Developer. All Rights Reserved.
|
|
*
|
|
* Contributor(s):
|
|
* Daniel Bratell <bratell@lysator.liu.se>
|
|
*
|
|
* Alternatively, the contents of this file may be used under the terms of
|
|
* either of the GNU General Public License Version 2 or later (the "GPL"),
|
|
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
|
|
* in which case the provisions of the GPL or the LGPL are applicable instead
|
|
* of those above. If you wish to allow use of your version of this file only
|
|
* under the terms of either the GPL or the LGPL, and not to allow others to
|
|
* use your version of this file under the terms of the MPL, indicate your
|
|
* decision by deleting the provisions above and replace them with the notice
|
|
* and other provisions required by the GPL or the LGPL. If you do not delete
|
|
* the provisions above, a recipient may use your version of this file under
|
|
* the terms of any one of the MPL, the GPL or the LGPL.
|
|
*
|
|
* ***** END LICENSE BLOCK ***** */
|
|
#include "nsID.h"
|
|
#include "prprf.h"
|
|
#include "nsMemory.h"
|
|
|
|
static const char gIDFormat[] =
|
|
"{%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";
|
|
|
|
|
|
/**
|
|
* Multiplies the_int_var with 16 (0x10) and adds the value of the
|
|
* hexadecimal digit the_char. If it fails it returns false from
|
|
* the function it's used in.
|
|
*/
|
|
|
|
#define ADD_HEX_CHAR_TO_INT_OR_RETURN_FALSE(the_char, the_int_var) \
|
|
the_int_var = (the_int_var << 4) + the_char; \
|
|
if(the_char >= '0' && the_char <= '9') the_int_var -= '0'; \
|
|
else if(the_char >= 'a' && the_char <= 'f') the_int_var -= 'a'-10; \
|
|
else if(the_char >= 'A' && the_char <= 'F') the_int_var -= 'A'-10; \
|
|
else return false
|
|
|
|
|
|
/**
|
|
* Parses number_of_chars characters from the char_pointer pointer and
|
|
* puts the number in the dest_variable. The pointer is moved to point
|
|
* at the first character after the parsed ones. If it fails it returns
|
|
* false from the function the macro is used in.
|
|
*/
|
|
|
|
#define PARSE_CHARS_TO_NUM(char_pointer, dest_variable, number_of_chars) \
|
|
do { PRInt32 _i=number_of_chars; \
|
|
dest_variable = 0; \
|
|
while(_i) { \
|
|
ADD_HEX_CHAR_TO_INT_OR_RETURN_FALSE(*char_pointer, dest_variable); \
|
|
char_pointer++; \
|
|
_i--; \
|
|
} } while(0)
|
|
|
|
|
|
/**
|
|
* Parses a hyphen from the char_pointer string. If there is no hyphen there
|
|
* the function returns false from the function it's used in. The
|
|
* char_pointer is advanced one step.
|
|
*/
|
|
|
|
#define PARSE_HYPHEN(char_pointer) if(*(char_pointer++) != '-') return false
|
|
|
|
/*
|
|
* Turns a {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx} string into
|
|
* an nsID. It can also handle the old format without the { and }.
|
|
*/
|
|
|
|
bool nsID::Parse(const char *aIDStr)
|
|
{
|
|
/* Optimized for speed */
|
|
if(!aIDStr) {
|
|
return false;
|
|
}
|
|
|
|
bool expectFormat1 = (aIDStr[0] == '{');
|
|
if(expectFormat1) aIDStr++;
|
|
|
|
PARSE_CHARS_TO_NUM(aIDStr, m0, 8);
|
|
PARSE_HYPHEN(aIDStr);
|
|
PARSE_CHARS_TO_NUM(aIDStr, m1, 4);
|
|
PARSE_HYPHEN(aIDStr);
|
|
PARSE_CHARS_TO_NUM(aIDStr, m2, 4);
|
|
PARSE_HYPHEN(aIDStr);
|
|
int i;
|
|
for(i=0; i<2; i++)
|
|
PARSE_CHARS_TO_NUM(aIDStr, m3[i], 2);
|
|
PARSE_HYPHEN(aIDStr);
|
|
while(i < 8) {
|
|
PARSE_CHARS_TO_NUM(aIDStr, m3[i], 2);
|
|
i++;
|
|
}
|
|
|
|
return expectFormat1 ? *aIDStr == '}' : true;
|
|
}
|
|
|
|
#ifndef XPCOM_GLUE_AVOID_NSPR
|
|
|
|
/*
|
|
* Returns an allocated string in {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}
|
|
* format. The string is allocated with NS_Alloc and should be freed by
|
|
* the caller.
|
|
*/
|
|
|
|
char *nsID::ToString() const
|
|
{
|
|
char *res = (char*)NS_Alloc(NSID_LENGTH);
|
|
|
|
if (res != NULL) {
|
|
PR_snprintf(res, NSID_LENGTH, 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]);
|
|
}
|
|
return res;
|
|
}
|
|
|
|
void nsID::ToProvidedString(char (&dest)[NSID_LENGTH]) const
|
|
{
|
|
PR_snprintf(dest, NSID_LENGTH, 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]);
|
|
}
|
|
|
|
#endif // XPCOM_GLUE_AVOID_NSPR
|