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/*
* Copyright (c) 2001 Stephen Williams (steve@icarus.com)
*
* This source code is free software; you can redistribute it
* and/or modify it in source code form 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
*/
#ifdef HAVE_CVS_IDENT
#ident "$Id: HName.cc,v 1.5 2002/11/02 03:27:52 steve Exp $"
#endif
# include "config.h"
# include "HName.h"
# include <iostream>
# include <string.h>
# include <stdlib.h>
#ifdef HAVE_MALLOC_H
# include <malloc.h>
#endif
hname_t::hname_t()
{
item_ = 0;
count_ = 0;
}
hname_t::hname_t(const char*text)
{
item_ = strdup(text);
count_ = 1;
}
hname_t::hname_t(const hname_t&that)
{
count_ = that.count_;
switch (count_) {
case 0:
item_ = 0;
break;
case 1:
item_ = strdup(that.item_);
break;
default:
array_ = new char*[count_];
for (unsigned idx = 0 ; idx < count_ ; idx += 1)
array_[idx] = strdup(that.array_[idx]);
break;
}
}
hname_t::~hname_t()
{
switch (count_) {
case 0:
break;
case 1:
free(item_);
break;
default:
for (unsigned idx = 0 ; idx < count_ ; idx += 1)
free(array_[idx]);
delete[]array_;
break;
}
}
unsigned hname_t::component_count() const
{
return count_;
}
void hname_t::append(const char*text)
{
char**tmp;
switch (count_) {
case 0:
count_ = 1;
item_ = strdup(text);
break;
case 1:
count_ = 2;
tmp = new char*[2];
tmp[0] = item_;
tmp[1] = strdup(text);
array_ = tmp;
break;
default:
tmp = new char*[count_+1];
for (unsigned idx = 0 ; idx < count_ ; idx += 1)
tmp[idx] = array_[idx];
delete[]array_;
array_ = tmp;
array_[count_] = strdup(text);
count_ += 1;
}
}
void hname_t::prepend(const char*text)
{
char**tmp;
switch (count_) {
case 0:
count_ = 1;
item_ = strdup(text);
break;
case 1:
count_ = 2;
tmp = new char*[2];
tmp[0] = strdup(text);
tmp[1] = item_;
array_ = tmp;
break;
default:
tmp = new char*[count_+1];
tmp[0] = strdup(text);
for (unsigned idx = 0 ; idx < count_ ; idx += 1)
tmp[idx+1] = array_[idx];
delete[]array_;
array_ = tmp;
count_ += 1;
}
}
char* hname_t::remove_tail_name()
{
if (count_ == 0)
return 0;
if (count_ == 1) {
char*tmp = item_;
count_ = 0;
item_ = 0;
return tmp;
}
if (count_ == 2) {
char*tmp1 = array_[0];
char*tmp2 = array_[1];
delete[]array_;
count_ = 1;
item_ = tmp1;
return tmp2;
}
char*tmpo = array_[count_-1];
char**tmpa = new char*[count_-1];
for (unsigned idx = 0 ; idx < count_-1 ; idx += 1)
tmpa[idx] = array_[idx];
delete[]array_;
array_ = tmpa;
count_ -= 1;
return tmpo;
}
const char* hname_t::peek_name(unsigned idx) const
{
if (idx >= count_)
return 0;
if (count_ == 1)
return item_;
return array_[idx];
}
const char* hname_t::peek_tail_name() const
{
switch (count_) {
case 0:
return 0;
case 1:
return item_;
default:
return array_[count_-1];
}
}
bool operator < (const hname_t&l, const hname_t&r)
{
unsigned idx = 0;
const char*lc = l.peek_name(idx);
const char*rc = r.peek_name(idx);
while (lc && rc) {
int cmp = strcmp(lc, rc);
if (cmp < 0)
return true;
if (cmp > 0)
return false;
idx += 1;
lc = l.peek_name(idx);
rc = r.peek_name(idx);
}
if (lc && !rc)
return false;
if (rc && !lc)
return true;
// Must be ==
return false;
}
bool operator == (const hname_t&l, const hname_t&r)
{
unsigned idx = 0;
const char*lc = l.peek_name(idx);
const char*rc = r.peek_name(idx);
while (lc && rc) {
int cmp = strcmp(lc, rc);
if (cmp != 0)
return false;
idx += 1;
lc = l.peek_name(idx);
rc = r.peek_name(idx);
}
if (lc || rc)
return false;
// Must be ==
return true;
}
ostream& operator<< (ostream&out, const hname_t&that)
{
switch (that.count_) {
case 0:
out << "";
return out;
case 1:
out << that.item_;
return out;
default:
out << that.array_[0];
for (unsigned idx = 1 ; idx < that.count_ ; idx += 1)
out << "." << that.array_[idx];
return out;
}
}
/*
* $Log: HName.cc,v $
* Revision 1.5 2002/11/02 03:27:52 steve
* Allow named events to be referenced by
* hierarchical names.
*
* Revision 1.4 2002/08/12 01:34:58 steve
* conditional ident string using autoconfig.
*
* Revision 1.3 2002/01/05 04:36:06 steve
* include malloc.h only when available.
*
* Revision 1.2 2001/12/18 04:52:45 steve
* Include config.h for namespace declaration.
*
* Revision 1.1 2001/12/03 04:47:14 steve
* Parser and pform use hierarchical names as hname_t
* objects instead of encoded strings.
*
*/
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