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// Copyright (C) 1999-2005 Open Source Telecom Corporation.
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
//
// This exception applies only to the code released under the name GNU
// Common C++. If you copy code from other releases into a copy of GNU
// Common C++, as the General Public License permits, the exception does
// not apply to the code that you add in this way. To avoid misleading
// anyone as to the status of such modified files, you must delete
// this exception notice from them.
//
// If you write modifications of your own for GNU Common C++, it is your choice
// whether to permit this exception to apply to your modifications.
// If you do not wish that, delete this exception notice.
//
#include <cc++/config.h>
#include <cc++/string.h>
#include <cc++/exception.h>
#include <cc++/thread.h>
#include <cc++/export.h>
#include <cc++/tokenizer.h>
#include "private.h"
#include <cstdlib>
#include <cstdio>
#ifdef CCXX_NAMESPACES
namespace ost {
using namespace std;
#endif
// sorted by the usual probability of occurence
// see also: manpage of isspace()
const char * const StringTokenizer::SPACE=" \t\n\r\f\v";
StringTokenizer::StringTokenizer (const char *_str,
const char *_delim,
bool _skipAll,
bool _trim)
: str(_str),delim(_delim),skipAll(_skipAll),trim(_trim) {
if (str == 0)
itEnd = iterator(*this, 0);
else
itEnd = iterator(*this,strchr(str, '\0')+1);
}
StringTokenizer::StringTokenizer (const char *s)
: str(s), delim(SPACE), skipAll(false),trim(true) {
if (str == 0)
itEnd = iterator(*this, 0);
else
itEnd = iterator(*this,strchr(str, '\0')+1);
}
StringTokenizer::iterator& StringTokenizer::iterator::operator ++ ()
THROWS (StringTokenizer::NoSuchElementException) {
// someone requested to read beyond the end .. tsts
if (endp == myTok->itEnd.endp)
THROW (NoSuchElementException());
if (token) {
// this is to help people find their bugs, if they
// still maintain a pointer to this invalidated
// area :-)
*token = '\0';
delete[] token;
token = 0;
}
start = ++endp;
if (endp == myTok->itEnd.endp) return *this; // done
// search for next delimiter
while (*endp && strchr(myTok->delim, *endp)==NULL)
++endp;
tokEnd = endp;
if (*endp && myTok->skipAll) { // skip all delimiters
while (*(endp+1) && strchr(myTok->delim, *(endp+1)))
++endp;
}
return *this;
}
/*
* if no one requests the token, no time is spent skipping the whitespaces
* or allocating memory.
*/
const char * StringTokenizer::iterator::operator * ()
THROWS (StringTokenizer::NoSuchElementException) {
// someone requested to read beyond the end .. tsts
if (endp == myTok->itEnd.endp)
THROW (NoSuchElementException());
if (!token) {
/*
* someone requests this token; return a copy to provide
* a NULL terminated string.
*/
/* don't clobber tokEnd, it is used in nextDelimiter() */
const char *wsTokEnd = tokEnd;
if (myTok->trim) {
while (wsTokEnd > start && strchr(SPACE, *start))
++start;
while (wsTokEnd > start && strchr(SPACE,*(wsTokEnd-1)))
--wsTokEnd;
}
size_t tokLen = wsTokEnd - start;
if (start > wsTokEnd) {
tokLen = 0;
}
token = newString(start, tokLen + 1);
}
return token;
}
#ifdef CCXX_NAMESPACES
}
#endif
/** EMACS **
* Local variables:
* mode: c++
* c-basic-offset: 8
* End:
*/
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