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/*
* pf-del.cc: Part of GNU CSSC.
*
* Copyright (C) 1997,2001, Free Software Foundation, Inc.
*
* 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, USA.
*
* CSSC was originally Based on MySC, by Ross Ridge, which was
* placed in the Public Domain.
*
*
* Members of the class sccs_pfile used when removing an edit lock from
* a p-file.
*
*/
#include "cssc.h"
#include "pfile.h"
#include "except.h"
#ifdef CONFIG_SCCS_IDS
static const char rcs_id[] = "CSSC $Id: pf-del.cc,v 1.14 2001/09/29 19:39:41 james_youngman Exp $";
#endif
/* enum */ sccs_pfile::find_status
sccs_pfile::find_sid(sid id) {
rewind();
const char *username = get_user_name();
sccs_pfile &it = *this;
int found = -1;
while (next()) {
if (strcmp(username, it->user.c_str()) == 0
&& (id.is_null() || id == it->got || id == it->delta)) {
if (found != -1) {
return AMBIGUOUS;
}
found = pos;
}
}
if (found == -1) {
return NOT_FOUND;
}
pos = found;
return FOUND;
}
bool
sccs_pfile::update(bool pfile_already_exists)
{
const mystring q_name(name.qfile());
const char* qname = q_name.c_str();
FILE *pf = fcreate(qname, CREATE_EXCLUSIVE);
if (pf == NULL)
{
errormsg_with_errno("%s: Can't create temporary file.", qname);
return false;
}
int count = 0;
#ifdef HAVE_EXCEPTIONS
try
{
#endif
rewind();
while (next())
{
if (write_edit_lock(pf, edit_locks[pos]))
{
errormsg_with_errno("%s: Write error.", qname);
remove(qname);
return false;
}
count++;
}
if (fclose_failed(fclose(pf)))
{
errormsg_with_errno("%s: Write error.", qname);
remove(qname);
return false;
}
#ifdef HAVE_EXCEPTIONS
}
catch (CsscException)
{
// got an exception; delete the temporary file and re-throw the exception
remove(qname);
throw;
}
#endif
if (pfile_already_exists)
{
if (remove(pname.c_str()) != 0)
{
errormsg_with_errno("%s: Can't remove old p-file.", pname.c_str());
return false;
}
}
if (count == 0) // no locks left -> no pfile rewuired.
{
if (remove(qname) != 0)
{
errormsg_with_errno("%s: Can't remove temporary file.",
pname.c_str());
return false;
}
}
else
{
if (rename(qname, pname.c_str()) != 0)
{
// this is really bad; we have already deleted the old p-file!
errormsg_with_errno("%s: Can't rename new p-file.",
qname);
return false;
}
}
return true;
}
/* Local variables: */
/* mode: c++ */
/* End: */
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