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GETVERSI.C
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1990-05-23
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/* getversion.c -- select backup filename type
Copyright (C) 1990 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 1, 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
/* Written by David MacKenzie <djm@ai.mit.edu> */
#include "backupfile.h"
int argmatch ();
void invalid_arg ();
extern char *program_name;
static char *backup_args[] =
{
"never", "simple", "nil", "existing", "t", "numbered", 0
};
static enum backup_type backup_types[] =
{
simple, simple, numbered_existing, numbered_existing, numbered, numbered
};
/* Return the type of backup indicated by VERSION.
Unique abbreviations are accepted. */
enum backup_type
get_version (version)
char *version;
{
int i;
if (version == 0 || *version == 0)
return numbered_existing;
i = argmatch (version, backup_args);
if (i >= 0)
return backup_types[i];
invalid_arg ("version control type", version, i);
return numbered_existing;
}