mirror of
https://gitlab.freedesktop.org/uchardet/uchardet.git
synced 2025-12-11 22:20:05 +08:00
256d1957b2
... to stay backward compatible with previous behavior. About detection failure, our in-code documentation says: "@return name of charset on success and "" on failure or pure ascii." This behavior had been broken by commit 3a518c0, which returned NULL instead. Our command-line tool was the first victim, segfaulting on ASCII files.
112 lines
3.3 KiB
C++
112 lines
3.3 KiB
C++
/* ***** 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 Universal charset detector 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) 2001
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* BYVoid <byvoid.kcp@gmail.com>
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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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#include "uchardet.h"
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#include <string.h>
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#include <stdlib.h>
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#include "nscore.h"
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#include "nsUniversalDetector.h"
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class HandleUniversalDetector : public nsUniversalDetector
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{
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protected:
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char *m_charset;
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public:
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HandleUniversalDetector()
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: nsUniversalDetector(NS_FILTER_ALL)
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, m_charset(0)
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{
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}
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virtual ~HandleUniversalDetector()
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{
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if (m_charset)
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free(m_charset);
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}
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virtual void Report(const char* charset)
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{
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if (m_charset)
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free(m_charset);
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m_charset = strdup(charset);
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}
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virtual void Reset()
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{
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nsUniversalDetector::Reset();
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if (m_charset)
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free(m_charset);
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m_charset = strdup("");
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}
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const char* GetCharset() const
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{
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return m_charset? m_charset : "";
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}
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};
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uchardet_t uchardet_new(void)
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{
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return reinterpret_cast<uchardet_t> (new HandleUniversalDetector());
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}
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void uchardet_delete(uchardet_t ud)
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{
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delete reinterpret_cast<HandleUniversalDetector*>(ud);
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}
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int uchardet_handle_data(uchardet_t ud, const char * data, size_t len)
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{
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nsresult ret = reinterpret_cast<HandleUniversalDetector*>(ud)->HandleData(data, (PRUint32)len);
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return (ret != NS_OK);
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}
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void uchardet_data_end(uchardet_t ud)
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{
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reinterpret_cast<HandleUniversalDetector*>(ud)->DataEnd();
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}
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void uchardet_reset(uchardet_t ud)
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{
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reinterpret_cast<HandleUniversalDetector*>(ud)->Reset();
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}
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const char* uchardet_get_charset(uchardet_t ud)
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{
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return reinterpret_cast<HandleUniversalDetector*>(ud)->GetCharset();
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}
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