(version_etc_copyright): Update copyright year.

[gnulib.git] / lib / argmatch.c

diff --git a/lib/argmatch.c b/lib/argmatch.c
index 19d5aa4..005be88 100644 (file)
--- a/lib/argmatch.c
+++ b/lib/argmatch.c
@@ -1,5 +1,5 @@
 /* argmatch.c -- find a match for a string in an array
-   Copyright (C) 1990, 1998, 1999 Free Software Foundation, Inc.
+   Copyright (C) 1990, 1998, 1999, 2001 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
@@ -36,21 +36,33 @@
 # define _(Text) Text
 #endif
 
+#include "error.h"
 #include "quotearg.h"
+#include "quote.h"
+#include "unlocked-io.h"
 
-/* When reporting a failing argument, make sure to show invisible
-   characters hidden using the quoting style
-   ARGMATCH_QUOTING_STYLE. literal_quoting_style is not good.  */
-
+/* When reporting an invalid argument, show nonprinting characters
+   by using the quoting style ARGMATCH_QUOTING_STYLE.  Do not use
+   literal_quoting_style.  */
 #ifndef ARGMATCH_QUOTING_STYLE
-# define ARGMATCH_QUOTING_STYLE escape_quoting_style
+# define ARGMATCH_QUOTING_STYLE locale_quoting_style
 #endif
 
-extern char *program_name;
+/* The following test is to work around the gross typo in
+   systems like Sony NEWS-OS Release 4.0C, whereby EXIT_FAILURE
+   is defined to 0, not 1.  */
+#if !EXIT_FAILURE
+# undef EXIT_FAILURE
+# define EXIT_FAILURE 1
+#endif
 
 /* Non failing version of argmatch call this function after failing. */
 #ifndef ARGMATCH_DIE
-# define ARGMATCH_DIE exit (2)
+# define ARGMATCH_DIE exit (EXIT_FAILURE)
+#endif
+
+#ifdef ARGMATCH_DIE_DECL
+ARGMATCH_DIE_DECL;
 #endif
 
 static void
@@ -59,7 +71,10 @@ __argmatch_die (void)
   ARGMATCH_DIE;
 }
 
-argmatch_exit_fn argmatch_exit_failure = __argmatch_exit_failure;
+/* Used by XARGMATCH and XARGCASEMATCH.  See description in argmatch.h.
+   Default to __argmatch_die, but allow caller to change this at run-time. */
+argmatch_exit_fn argmatch_die = __argmatch_die;
+
 \f
 /* If ARG is an unambiguous match for an element of the
    null-terminated array ARGLIST, return the index in ARGLIST
@@ -142,21 +157,12 @@ argcasematch (const char *arg, const char *const *arglist,
 void
 argmatch_invalid (const char *context, const char *value, int problem)
 {
-  enum quoting_style saved_quoting_style;
-  char const *format;
-
-  /* Make sure to have a good quoting style to report errors.
-     literal is insane here. */
-  saved_quoting_style = get_quoting_style (NULL);
-  set_quoting_style (NULL, ARGMATCH_QUOTING_STYLE);
-
-  format = (problem == -1
-           ? _("%s: invalid argument `%s' for `%s'\n")
-           : _("%s: ambiguous argument `%s' for `%s'\n"));
-
-  fprintf (stderr, format, program_name, quotearg (value), context);
+  char const *format = (problem == -1
+                       ? _("invalid argument %s for %s")
+                       : _("ambiguous argument %s for %s"));
 
-  set_quoting_style (NULL, saved_quoting_style);
+  error (0, 0, format, quotearg_n_style (0, ARGMATCH_QUOTING_STYLE, value),
+        quote_n (1, context));
 }
 
 /* List the valid arguments for argmatch.