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Viewing changes to src/ed/stringlist.c

  • Committer: Bazaar Package Importer
  • Author(s): Otavio Salvador
  • Date: 2003-07-03 20:08:21 UTC
  • Revision ID: james.westby@ubuntu.com-20030703200821-se4xtqx25e5miczi
Tags: upstream-2.20
Import upstream version 2.20

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src/ed/stringlist.c
 
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////////////////////////////////////////////////////////////////////////////////
 
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//
 
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// This file is part of Toolkit for Conceptual Modeling (TCM).
 
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// (c) copyright 1996, Vrije Universiteit Amsterdam.
 
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// Author: Frank Dehne (frank@cs.vu.nl).
 
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//
 
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// TCM is free software; you can redistribute it and/or modify
 
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// it under the terms of the GNU General Public License as published by
 
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// the Free Software Foundation; either version 2 of the License, or 
 
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// (at your option) any later version.
 
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//
 
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// TCM is distributed in the hope that it will be useful,
 
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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// GNU General Public License for more details.
 
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//
 
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// You should have received a copy of the GNU General Public License
 
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// along with TCM; if not, write to the Free Software
 
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 
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// 02111-1307, USA.
 
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////////////////////////////////////////////////////////////////////////////////
 
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#include "stringlist.h"
 
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#include "lstring.h"
 
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#include "util.h"
 
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void StringList::Insert(List<string *> *list, const string *s, 
 
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                        unsigned n, bool update) {
 
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        if (!check(list && s))
 
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                return;
 
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        if (*s != "") {
 
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                if (update) {
 
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                        if (n < list->count()) {
 
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                                // update existing value
 
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                                *(*list)[n] = *s;
 
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                        }
 
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                        else if (n== list->count()) {
 
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                                // add new value at end of list.
 
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                                string *ns = new string(*s);
 
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                                list->add(ns);
 
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                        }
 
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                        else {
 
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                                error("%s, line %d, impl error:"
 
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                                        " impossible string position\n", 
 
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                                        __FILE__, __LINE__);
 
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                                return;
 
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                        }
 
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                }
 
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                else {  // insert new string between the others. 
 
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                        if (n < list->count()) {
 
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                                string *ns = new string(*s);
 
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                                list->insert(ns, n);
 
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                        }
 
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                        else if (n == list->count()) {
 
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                                string *ns = new string(*s);
 
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                                list->add(ns);
 
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                        }
 
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                        else {
 
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                                error("%s, line %d, impl error: "
 
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                                        "impossible string position\n", 
 
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                                        __FILE__, __LINE__);
 
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                                return;
 
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                        }
 
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                }
 
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        }
 
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        else
 
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                // empty string -> delete this value.
 
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                if (update) {
 
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                        if (n < list->count()) {
 
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                                string *x = (*list)[n];
 
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                                list->removei(n);
 
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                                delete x;
 
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                        }
 
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                }
 
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}