X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fargmatch.c;h=9125e2af048eee7851e28f47090054fa445f4471;hb=fa1db0dd22768f09a507674a30beb5b8a87bb35f;hp=ba1da3fba64be92ba44a58e8f8bfb2e7deb511f5;hpb=d349992d82f97d614404565ff66e3f8a47b4a568;p=gnulib.git

diff --git a/lib/argmatch.c b/lib/argmatch.c
index ba1da3fba..9125e2af0 100644
--- a/lib/argmatch.c
+++ b/lib/argmatch.c
@@ -1,10 +1,12 @@
 /* argmatch.c -- find a match for a string in an array
-   Copyright (C) 1990, 1998, 1999, 2000 Free Software Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify
+   Copyright (C) 1990, 1998-1999, 2001-2007, 2009-2013 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.
+   the Free Software Foundation; either version 3 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
@@ -12,32 +14,31 @@
    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.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 /* Written by David MacKenzie <djm@ai.mit.edu>
    Modified by Akim Demaille <demaille@inf.enst.fr> */
 
+#include <config.h>
+
+/* Specification.  */
 #include "argmatch.h"
 
+#include <stdbool.h>
 #include <stdio.h>
-#ifdef STDC_HEADERS
-# include <string.h>
-#endif
+#include <stdlib.h>
+#include <string.h>
 
-#if HAVE_LOCALE_H
-# include <locale.h>
-#endif
-
-#if ENABLE_NLS
-# include <libintl.h>
-# define _(Text) gettext (Text)
-#else
-# define _(Text) Text
-#endif
+#include "gettext.h"
+#define _(msgid) gettext (msgid)
 
 #include "error.h"
 #include "quotearg.h"
+#include "quote.h"
+
+#if USE_UNLOCKED_IO
+# include "unlocked-io.h"
+#endif
 
 /* When reporting an invalid argument, show nonprinting characters
    by using the quoting style ARGMATCH_QUOTING_STYLE.  Do not use
@@ -46,17 +47,10 @@
 # define ARGMATCH_QUOTING_STYLE locale_quoting_style
 #endif
 
-/* 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 (EXIT_FAILURE)
+# include "exitfail.h"
+# define ARGMATCH_DIE exit (exit_failure)
 #endif
 
 #ifdef ARGMATCH_DIE_DECL
@@ -75,55 +69,51 @@ argmatch_exit_fn argmatch_die = __argmatch_die;
 
 
 /* If ARG is an unambiguous match for an element of the
-   null-terminated array ARGLIST, return the index in ARGLIST
+   NULL-terminated array ARGLIST, return the index in ARGLIST
    of the matched element, else -1 if it does not match any element
    or -2 if it is ambiguous (is a prefix of more than one element).
-   If SENSITIVE, comparison is case sensitive.
 
    If VALLIST is none null, use it to resolve ambiguities limited to
    synonyms, i.e., for
      "yes", "yop" -> 0
      "no", "nope" -> 1
-   "y" is a valid argument, for `0', and "n" for `1'.  */
+   "y" is a valid argument, for 0, and "n" for 1.  */
 
-static int
-__argmatch_internal (const char *arg, const char *const *arglist,
-		     const char *vallist, size_t valsize,
-		     int case_sensitive)
+ptrdiff_t
+argmatch (const char *arg, const char *const *arglist,
+          const char *vallist, size_t valsize)
 {
-  int i;			/* Temporary index in ARGLIST.  */
-  size_t arglen;		/* Length of ARG.  */
-  int matchind = -1;		/* Index of first nonexact match.  */
-  int ambiguous = 0;		/* If nonzero, multiple nonexact match(es).  */
+  size_t i;                     /* Temporary index in ARGLIST.  */
+  size_t arglen;                /* Length of ARG.  */
+  ptrdiff_t matchind = -1;      /* Index of first nonexact match.  */
+  bool ambiguous = false;       /* If true, multiple nonexact match(es).  */
 
   arglen = strlen (arg);
 
   /* Test all elements for either exact match or abbreviated matches.  */
   for (i = 0; arglist[i]; i++)
     {
-      if (case_sensitive
-	  ? !strncmp (arglist[i], arg, arglen)
-	  : !strncasecmp (arglist[i], arg, arglen))
-	{
-	  if (strlen (arglist[i]) == arglen)
-	    /* Exact match found.  */
-	    return i;
-	  else if (matchind == -1)
-	    /* First nonexact match found.  */
-	    matchind = i;
-	  else
-	    {
-	      /* Second nonexact match found.  */
-	      if (vallist == NULL
-		  || memcmp (vallist + valsize * matchind,
-			     vallist + valsize * i, valsize))
-		{
-		  /* There is a real ambiguity, or we could not
-		     disambiguate. */
-		  ambiguous = 1;
-		}
-	    }
-	}
+      if (!strncmp (arglist[i], arg, arglen))
+        {
+          if (strlen (arglist[i]) == arglen)
+            /* Exact match found.  */
+            return i;
+          else if (matchind == -1)
+            /* First nonexact match found.  */
+            matchind = i;
+          else
+            {
+              /* Second nonexact match found.  */
+              if (vallist == NULL
+                  || memcmp (vallist + valsize * matchind,
+                             vallist + valsize * i, valsize))
+                {
+                  /* There is a real ambiguity, or we could not
+                     disambiguate. */
+                  ambiguous = true;
+                }
+            }
+        }
     }
   if (ambiguous)
     return -2;
@@ -131,35 +121,20 @@ __argmatch_internal (const char *arg, const char *const *arglist,
     return matchind;
 }
 
-/* argmatch - case sensitive version */
-int
-argmatch (const char *arg, const char *const *arglist,
-	  const char *vallist, size_t valsize)
-{
-  return __argmatch_internal (arg, arglist, vallist, valsize, 1);
-}
-
-/* argcasematch - case insensitive version */
-int
-argcasematch (const char *arg, const char *const *arglist,
-	      const char *vallist, size_t valsize)
-{
-  return __argmatch_internal (arg, arglist, vallist, valsize, 0);
-}
-
 /* Error reporting for argmatch.
    CONTEXT is a description of the type of entity that was being matched.
    VALUE is the invalid value that was given.
    PROBLEM is the return value from argmatch.  */
 
 void
-argmatch_invalid (const char *context, const char *value, int problem)
+argmatch_invalid (const char *context, const char *value, ptrdiff_t problem)
 {
   char const *format = (problem == -1
-			? _("invalid argument %s for `%s'")
-			: _("ambiguous argument %s for `%s'"));
+                        ? _("invalid argument %s for %s")
+                        : _("ambiguous argument %s for %s"));
 
-  error (0, 0, format, quotearg_style (ARGMATCH_QUOTING_STYLE, value), context);
+  error (0, 0, format, quotearg_n_style (0, ARGMATCH_QUOTING_STYLE, value),
+         quote_n (1, context));
 }
 
 /* List the valid arguments for argmatch.
@@ -168,24 +143,24 @@ argmatch_invalid (const char *context, const char *value, int problem)
    VALSIZE is the size of the elements of VALLIST */
 void
 argmatch_valid (const char *const *arglist,
-		const char *vallist, size_t valsize)
+                const char *vallist, size_t valsize)
 {
-  int i;
+  size_t i;
   const char *last_val = NULL;
 
   /* We try to put synonyms on the same line.  The assumption is that
      synonyms follow each other */
-  fprintf (stderr, _("Valid arguments are:"));
+  fputs (_("Valid arguments are:"), stderr);
   for (i = 0; arglist[i]; i++)
     if ((i == 0)
-	|| memcmp (last_val, vallist + valsize * i, valsize))
+        || memcmp (last_val, vallist + valsize * i, valsize))
       {
-	fprintf (stderr, "\n  - `%s'", arglist[i]);
-	last_val = vallist + valsize * i;
+        fprintf (stderr, "\n  - %s", quote (arglist[i]));
+        last_val = vallist + valsize * i;
       }
     else
       {
-	fprintf (stderr, ", `%s'", arglist[i]);
+        fprintf (stderr, ", %s", quote (arglist[i]));
       }
   putc ('\n', stderr);
 }
@@ -196,16 +171,13 @@ argmatch_valid (const char *const *arglist,
    "--version-control", or "$VERSION_CONTROL" etc.).  Upon failure,
    calls the (supposed never to return) function EXIT_FN. */
 
-int
+ptrdiff_t
 __xargmatch_internal (const char *context,
-		      const char *arg, const char *const *arglist,
-		      const char *vallist, size_t valsize,
-		      int case_sensitive,
-		      argmatch_exit_fn exit_fn)
+                      const char *arg, const char *const *arglist,
+                      const char *vallist, size_t valsize,
+                      argmatch_exit_fn exit_fn)
 {
-  int res = __argmatch_internal (arg, arglist,
-				 vallist, valsize,
-				 case_sensitive);
+  ptrdiff_t res = argmatch (arg, arglist, vallist, valsize);
   if (res >= 0)
     /* Success. */
     return res;
@@ -222,10 +194,10 @@ __xargmatch_internal (const char *context,
    return the first corresponding argument in ARGLIST */
 const char *
 argmatch_to_argument (const char *value,
-		      const char *const *arglist,
-		      const char *vallist, size_t valsize)
+                      const char *const *arglist,
+                      const char *vallist, size_t valsize)
 {
-  int i;
+  size_t i;
 
   for (i = 0; arglist[i]; i++)
     if (!memcmp (value, vallist + valsize * i, valsize))
@@ -238,23 +210,22 @@ argmatch_to_argument (const char *value,
  * Based on "getversion.c" by David MacKenzie <djm@gnu.ai.mit.edu>
  */
 char *program_name;
-extern const char *getenv ();
 
 /* When to make backup files.  */
 enum backup_type
 {
   /* Never make backups.  */
-  none,
+  no_backups,
 
   /* Make simple backups of every file.  */
-  simple,
+  simple_backups,
 
   /* Make numbered backups of files that already have numbered backups,
      and simple backups of the others.  */
-  numbered_existing,
+  numbered_existing_backups,
 
   /* Make numbered backups of every file.  */
-  numbered
+  numbered_backups
 };
 
 /* Two tables describing arguments (keys) and their corresponding
@@ -270,17 +241,17 @@ static const char *const backup_args[] =
 
 static const enum backup_type backup_vals[] =
 {
-  none, none, none,
-  simple, simple,
-  numbered_existing, numbered_existing,
-  numbered, numbered
+  no_backups, no_backups, no_backups,
+  simple_backups, simple_backups,
+  numbered_existing_backups, numbered_existing_backups,
+  numbered_backups, numbered_backups
 };
 
 int
 main (int argc, const char *const *argv)
 {
   const char *cp;
-  enum backup_type backup_type = none;
+  enum backup_type backup_type = no_backups;
 
   program_name = (char *) argv[0];
 
@@ -291,15 +262,15 @@ main (int argc, const char *const *argv)
     }
 
   if ((cp = getenv ("VERSION_CONTROL")))
-    backup_type = XARGCASEMATCH ("$VERSION_CONTROL", cp,
-				 backup_args, backup_vals);
+    backup_type = XARGMATCH ("$VERSION_CONTROL", cp,
+                             backup_args, backup_vals);
 
   if (argc == 2)
-    backup_type = XARGCASEMATCH (program_name, argv[1],
-				 backup_args, backup_vals);
+    backup_type = XARGMATCH (program_name, argv[1],
+                             backup_args, backup_vals);
 
-  printf ("The version control is `%s'\n",
-	  ARGMATCH_TO_ARGUMENT (backup_type, backup_args, backup_vals));
+  printf ("The version control is '%s'\n",
+          ARGMATCH_TO_ARGUMENT (backup_type, backup_args, backup_vals));
 
   return 0;
 }