diff options
Diffstat (limited to 'lib/getversion.c')
-rw-r--r-- | lib/getversion.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/lib/getversion.c b/lib/getversion.c new file mode 100644 index 000000000..eca294599 --- /dev/null +++ b/lib/getversion.c @@ -0,0 +1,57 @@ +/* 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 2, 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@gnu.ai.mit.edu> */ + +#include "backupfile.h" + +#ifdef STDC_HEADERS +#include <stdlib.h> +#endif + +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); + exit (1); +} |