From f2545a507745a9daa8c1d8c78ac99155dc2a2ff0 Mon Sep 17 00:00:00 2001
From: Miles Bader <miles@gnu.org>
Date: Wed, 12 Feb 1997 23:17:09 +0000
Subject: (parser_parse_next):   Decrement PARSER->state.next if we consumed an
 arg we didn't end up parsing.   Set ARG_EBADKEY ourselves in all cases.
 (parser_parse_arg, parser_parse_opt):   Get rid of ARG_EBADKEY param.

---
 libshouldbeinlibc/argp-parse.c | 71 ++++++++++++++++++++----------------------
 1 file changed, 34 insertions(+), 37 deletions(-)

(limited to 'libshouldbeinlibc/argp-parse.c')

diff --git a/libshouldbeinlibc/argp-parse.c b/libshouldbeinlibc/argp-parse.c
index 40cfc87f..f6051d37 100644
--- a/libshouldbeinlibc/argp-parse.c
+++ b/libshouldbeinlibc/argp-parse.c
@@ -568,7 +568,7 @@ parser_finalize (struct parser *parser,
     /* Suppress errors generated by unparsed arguments.  */
     err = 0;
 
-  if (!err)
+  if (! err)
     if (parser->state.next == parser->state.argc)
       /* We successfully parsed all arguments!  Call all the parsers again,
 	 just a few more times... */
@@ -605,6 +605,8 @@ parser_finalize (struct parser *parser,
     {
       /* Maybe print an error message.  */
       if (err == EBADKEY)
+	/* An appropriate message describing what the error was should have
+	   been printed earlier.  */
 	__argp_state_help (&parser->state, parser->state.err_stream,
 			   ARGP_HELP_STD_ERR);
 
@@ -634,10 +636,10 @@ parser_finalize (struct parser *parser,
   return err;
 }
   
-/* Parse the non-option argument ARG, at the current position.  Returns
-   any error, and sets ARG_EBADKEY to true if return EBADKEY.  */
+/* Call the user parsers to parse the non-option argument VAL, at the current
+   position, returning any error.  */
 static error_t
-parser_parse_arg (struct parser *parser, char *val, int *arg_ebadkey)
+parser_parse_arg (struct parser *parser, char *val)
 {
   int index = parser->state.next;
   error_t err = EBADKEY;
@@ -658,56 +660,50 @@ parser_parse_arg (struct parser *parser, char *val, int *arg_ebadkey)
       /* The user wants to reparse some args, give getopt another try.  */
       parser->try_getopt = 1;
 
-  if (err == EBADKEY)
-    *arg_ebadkey = 1;
-
   return err;
 }
 
-/* Parse the option OPT (with argument ARG), at the current position.
-   Returns any error, and sets ARG_EBADKEY to true if it was actually an
-   argument and the parser returned EBADKEY.  */
+/* Call the user parsers to parse the option OPT, with argument VAL, at the
+   current position, returning any error.  */
 static error_t
-parser_parse_opt (struct parser *parser, int opt, char *val, int *arg_ebadkey)
+parser_parse_opt (struct parser *parser, int opt, char *val)
 {
   /* The group key encoded in the high bits; 0 for short opts or
      group_number + 1 for long opts.  */
   int group_key = opt >> USER_BITS;
-  error_t err = EBADKEY;	/* until otherwise asserted */
-  struct group *group;
 
   if (group_key == 0)
-    /* A short option.  */
+    /* A short option.  By comparing OPT's position in SHORT_OPTS to the
+       various starting positions in each group's SHORT_END field, we can
+       determine which group OPT came from.  */
     {
-      /* By comparing OPT's position in SHORT_OPTS to the various
-	 starting positions in each group's SHORT_END field, we can
-	 determine which group OPT came from.  */
+      struct group *group;
       char *short_index = strchr (parser->short_opts, opt);
+
       if (short_index)
 	for (group = parser->groups; group < parser->egroup; group++)
 	  if (group->short_end > short_index)
-	    {
-	      err = group_parse (group, &parser->state, opt, optarg);
-	      break;
-	    }
-      else
-	err = EBADKEY;
+	    return group_parse (group, &parser->state, opt, optarg);
+
+      return EBADKEY;		/* until otherwise asserted */
     }
   else
     /* A long option.  We use shifts instead of masking for extracting
        the user value in order to preserve the sign.  */
-    err =
+    return
       group_parse (&parser->groups[group_key - 1], &parser->state,
 		   (opt << GROUP_BITS) >> GROUP_BITS, optarg);
-
-  return err;
 }
 
-/* Parse the next argument in PARSER (as indicated by PARSER->state.next.  */
+/* Parse the next argument in PARSER (as indicated by PARSER->state.next).
+   Any error from the parsers is returned, and *ARGP_EBADKEY indicates
+   whether a value of EBADKEY is due to an unrecognized argument (which is
+   generally not fatal).  */
 static error_t
 parser_parse_next (struct parser *parser, int *arg_ebadkey)
 {
   int opt;
+  error_t err = 0;
 
   if (parser->state.quoted && parser->state.next < parser->state.quoted)
     /* The next argument pointer has been moved to before the quoted
@@ -766,20 +762,21 @@ parser_parse_next (struct parser *parser, int *arg_ebadkey)
       }
     else
       /* A non-option arg.  */
-      return
-	parser_parse_arg (parser,
-			       parser->state.argv[parser->state.next++],
-			       arg_ebadkey);
+      err =
+	parser_parse_arg (parser, parser->state.argv[parser->state.next++]);
   else if (opt == KEY_ARG)
     /* A non-option argument; try each parser in turn.  */
-    return parser_parse_arg (parser, optarg, arg_ebadkey);
+    err = parser_parse_arg (parser, optarg);
   else
-    return parser_parse_opt (parser, opt, optarg, arg_ebadkey);
+    err = parser_parse_opt (parser, opt, optarg);
 
-#if 0
-  if (err == EBADKEY && arg_ebadkey)
-    state.next--;		/* Put back the unused argument.  */
-#endif
+  if (err == EBADKEY)
+    {
+      *arg_ebadkey = (opt == KEY_END || opt == KEY_ARG);
+      parser->state.next--;	/* Put back the unused argument.  */
+    }
+
+  return err;
 }
 
 /* Parse the options strings in ARGC & ARGV according to the argp in ARGP.
-- 
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