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+/*
+ * cmdline.h -- generic commandline editing (uses getopt, only short)
+ *
+ * Copyright (c) 1999 Alessandro Rubini (rubini@gnu.org)
+ * Copyright (c) 1999 Prosa Srl. (prosa@prosa.it)
+ * 
+ *   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.
+ *
+ */
+
+/*
+ * The options may have different arguments of different type
+ */
+enum  option_type {
+    CMDLINE_NONE=0,  /* no argument after option */
+    CMDLINE_I,       /* integer (any base)       */
+    CMDLINE_D,       /* decimal integer          */
+    CMDLINE_X,       /* hex integer              */
+    CMDLINE_O,       /* octal integer            */
+    CMDLINE_S,       /* string                   */
+    CMDLINE_F,       /* double float             */
+    CMDLINE_P,       /* pointer                  */
+};
+
+
+struct commandline {
+    int option;         /* Single byte: option id */
+    int type;           /* Type of argument, used in sscanf */
+    void *result;       /* Store data here, if non null */
+    int (*fun)(void *); /* Call if defined: arg is "result" or input string */
+    char *env;          /* Where to get runtime defaults, may be NULL */
+    char *default_v;    /* The compile-time default, may be NULL */
+    char *descrip;      /* For err msg. May have %s's for default and env */
+};
+
+/* returns: 0 or -1. "optarg" is global (see getopt) */
+extern int commandline(struct commandline *args,
+		       int argc, char **argv, char *errorhead);
+
+/* prints an error message based on "args" */
+extern int commandline_errormsg(FILE *f, struct commandline *args,
+				char *prgname, char *messagehead);
+
+
+
+