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authorMiles Bader <miles@gnu.org>1997-05-15 22:28:16 +0000
committerMiles Bader <miles@gnu.org>1997-05-15 22:28:16 +0000
commit90baea3ab072bf8486aaf4d60f0b77ebdfb6301a (patch)
tree9dcc5bc53b30f1717a112b2f92d6463b8d11a67f /utils/parse.h
parent0cd3e5a21fdf695a53467e3b4fe35d5b6357c3c7 (diff)
Initial checkin
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+/* Random helpful option parsing functions
+
+ Copyright (C) 1995, 1996, 1997 Free Software Foundation, Inc.
+
+ Written by Miles Bader <miles@gnu.ai.mit.edu>
+
+ 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. */
+
+#ifndef __PARSE_H__
+#define __PARSE_H__
+
+/* For each string in the comma-separated list in ARG, call ADD_FN; if ARG is
+ empty and DEFAULT_FN isn't NULL, then call ADD_FN on the resutl of calling
+ DEFAULT_FN instead, otherwise signal an error. */
+extern void parse_strlist (char *arg,
+ void (*add_fn)(const char *str),
+ const char *(*default_fn)(),
+ const char *type_name);
+
+/* For each numeric string in the comma-separated list in ARG, call ADD_FN;
+ if ARG is empty and DEFAULT_FN isn't NULL, then call DEF_FN to get a number,
+ and call ADD_FN on that, otherwise signal an error. If any member of the
+ list isn't a number, and LOOKUP_FN isn't NULL, then it is called to return
+ an integer for the string. LOOKUP_FN should signal an error itself it
+ there's some problem parsing the string. */
+extern void parse_numlist (char *arg,
+ void (*add_fn)(unsigned num),
+ int (*default_fn)(),
+ int (*lookup_fn)(const char *str),
+ const char *type_name);
+
+/* Return the index of which of a set of strings ARG matches, including
+ non-ambiguous partial matches. CHOICE_FN should be a function that
+ returns the name of the Nth option, or 0 if N is out of range, and KIND
+ should be a string that describes what's being matched, for use in error
+ messages. If ALLOW_MISMATCHES is true, then -1 is returned in the event
+ that ARG matches no entry , otherwise, an error message is printed and the
+ program exits in this event. If ARG is an ambiguous match, an error
+ message is printed and the program exits. */
+extern int parse_enum (char *arg, const char *(*choice_fn)(unsigned n),
+ char *kind, int allow_mismatches);
+
+#endif /* __PARSE_H__ */