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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
// ccScript. If you copy code from other releases into a copy of GNU
// ccScript, 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 ccScript, 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 "script3.h"
#include <cstdlib>
namespace ccscript3Extension {
using namespace std;
using namespace ost;
class SortMethods : public ScriptMethods
{
public:
bool scrSort(void);
};
class SortChecks : public ScriptChecks
{
public:
const char *chkSort(Line *line, ScriptImage *img);
};
static Script::Define runtime[] = {
{"sort", false, (Script::Method)&SortMethods::scrSort,
(Script::Check)&SortChecks::chkSort},
{"revsort", false, (Script::Method)&SortMethods::scrSort,
(Script::Check)&SortChecks::chkSort},
{NULL, false, NULL, NULL}};
static ScriptBinder bindSort(runtime);
static Mutex _lock;
static bool _rev = false;
static char _pack = 0;
static unsigned _offset = 0;
extern "C" {
static int compare(const void *x, const void *y)
{
unsigned offset = _offset;
char *s1 = (char *)x;
char *s2 = (char *)y;
while(offset && s1 && s2) {
s1 = strchr(s1, _pack);
if(s1)
++s1;
s2 = strchr(s2, _pack);
if(s2)
++s2;
--offset;
}
if(!s1)
s1 = "";
if(!s2)
s2 = "";
if(_rev)
return stricmp(s2, s1);
return stricmp(s1, s2);
}
};
const char *SortChecks::chkSort(Line *line, ScriptImage *img)
{
unsigned idx = 0;
const char *cp;
if(getMember(line))
return "member not used for sort";
if(!useKeywords(line, "=field=token=offset"))
return "invalid keyword used for sort";
cp = getOption(line, &idx);
if(!cp)
return "variable missing to sort";
if(*cp != '%' && *cp != '&')
return "invalid sort argument";
if(getOption(line, &idx))
return "sort only one variable at a time";
return NULL;
}
bool SortMethods::scrSort(void)
{
Line *line = getLine();
bool rev = false;
const char *opt;
char pack = getPackToken();
unsigned offset = 0;
Symbol *sym = mapSymbol(getOption(NULL));
size_t count = 0;
Array *a = (Array *)&sym->data;
char *base = sym->data + sizeof(Array);
size_t size = a->rec + 1;
if(!sym) {
error("sort-missing-symbol");
return true;
}
opt = getKeyword("offset");
if(!opt)
opt = getKeyword("field");
if(opt)
offset = atoi(opt);
opt = getKeyword("token");
if(opt && *opt)
pack = *opt;
if(*(line->cmd) == 'r')
rev = true;
switch(sym->type) {
case symARRAY:
count = a->tail;
break;
default:
error("sort-invalid-type");
return true;
}
_lock.enter();
_rev = rev;
_pack = pack;
_offset = offset;
qsort((void *)base, count, size, &compare);
_lock.leave();
skip();
return true;
}
};
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