getdelim: Use SIZE_MAX from stdint.h.

[gnulib.git] / lib / argp-parse.c

diff --git a/lib/argp-parse.c b/lib/argp-parse.c
index 509f6de..317ce21 100644 (file)
--- a/lib/argp-parse.c
+++ b/lib/argp-parse.c
@@ -3,22 +3,21 @@
    This file is part of the GNU C Library.
    Written by Miles Bader <miles@gnu.ai.mit.edu>.
 
-   This program is free software; you can redistribute it and/or modify
+   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
    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.  */
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #ifdef HAVE_CONFIG_H
-#include <config.h>
+# include <config.h>
 #endif
 
 #include <alloca.h>
@@ -38,7 +37,7 @@
 #else
 # include "gettext.h"
 #endif
-#define N_(msgid) (msgid)
+#define N_(msgid) msgid
 
 #include "argp.h"
 #include "argp-namefrob.h"
@@ -79,11 +78,11 @@ static volatile int _argp_hang;
 
 static const struct argp_option argp_default_options[] =
 {
-  {"help",       '?',          0, 0,  N_("Give this help list"), -1},
-  {"usage",      OPT_USAGE,    0, 0,  N_("Give a short usage message"), 0},
-  {"program-name",OPT_PROGNAME,"NAME", OPTION_HIDDEN, N_("Set the program name"), 0},
-  {"HANG",       OPT_HANG,    "SECS", OPTION_ARG_OPTIONAL | OPTION_HIDDEN,
-     N_("Hang for SECS seconds (default 3600)"), 0},
+  {"help",       '?',          0, 0,  N_("give this help list"), -1},
+  {"usage",      OPT_USAGE,    0, 0,  N_("give a short usage message"), 0},
+  {"program-name",OPT_PROGNAME,N_("NAME"), OPTION_HIDDEN, N_("set the program name"), 0},
+  {"HANG",       OPT_HANG,    N_("SECS"), OPTION_ARG_OPTIONAL | OPTION_HIDDEN,
+     N_("hang for SECS seconds (default 3600)"), 0},
   {NULL, 0, 0, 0, NULL, 0}
 };
 
@@ -97,7 +96,7 @@ argp_default_parser (int key, char *arg, struct argp_state *state)
       break;
     case OPT_USAGE:
       __argp_state_help (state, state->out_stream,
-                      ARGP_HELP_USAGE | ARGP_HELP_EXIT_OK);
+                        ARGP_HELP_USAGE | ARGP_HELP_EXIT_OK);
       break;
 
     case OPT_PROGNAME:         /* Set the program name.  */
@@ -109,11 +108,7 @@ argp_default_parser (int key, char *arg, struct argp_state *state)
         to be that, so we have to be a bit careful here.]  */
 
       /* Update what we use for messages.  */
-      state->name = strrchr (arg, '/');
-      if (state->name)
-       state->name++;
-      else
-       state->name = arg;
+      state->name = __argp_base_name (arg);
 
 #if defined _LIBC || HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME
       program_invocation_short_name = state->name;
@@ -144,7 +139,7 @@ static const struct argp argp_default_argp =
 \f
 static const struct argp_option argp_version_options[] =
 {
-  {"version",    'V',          0, 0,  N_("Print program version"), -1},
+  {"version",    'V',          0, 0,  N_("print program version"), -1},
   {NULL, 0, 0, 0, NULL, 0}
 };
 
@@ -482,12 +477,18 @@ parser_init (struct parser *parser, const struct argp *argp,
 
   /* Lengths of the various bits of storage used by PARSER.  */
   glen = (szs.num_groups + 1) * sizeof (struct group);
-  gsum = alignto (glen, alignof (void *));
   clen = szs.num_child_inputs * sizeof (void *);
-  csum = alignto (gsum + clen, alignof (struct option));
   llen = (szs.long_len + 1) * sizeof (struct option);
-  lsum = alignto (csum + llen, alignof (char));
   slen = szs.short_len + 1;
+
+  /* Sums of previous lengths, properly aligned.  There's no need to
+     align gsum, since struct group is aligned at least as strictly as
+     void * (since it contains a void * member).  And there's no need
+     to align lsum, since struct option is aligned at least as
+     strictly as char.  */
+  gsum = glen;
+  csum = alignto (gsum + clen, alignof (struct option));
+  lsum = csum + llen;
   ssum = lsum + slen;
 
   parser->storage = malloc (ssum);
@@ -556,10 +557,7 @@ parser_init (struct parser *parser, const struct argp *argp,
 
   if (parser->state.argv == argv && argv[0])
     /* There's an argv[0]; use it for messages.  */
-    {
-      char *short_name = strrchr (argv[0], '/');
-      parser->state.name = short_name ? short_name + 1 : argv[0];
-    }
+    parser->state.name = __argp_base_name (argv[0]);
   else
     parser->state.name = __argp_short_program_name ();
 
@@ -878,6 +876,20 @@ __argp_parse (const struct argp *argp, int argc, char **argv, unsigned flags,
      to be parsed (which in some cases isn't actually an error).  */
   int arg_ebadkey = 0;
 
+#ifndef _LIBC
+  if (!(flags & ARGP_PARSE_ARGV0))
+    {
+#ifdef HAVE_DECL_PROGRAM_INVOCATION_NAME
+      if (!program_invocation_name)
+       program_invocation_name = argv[0];
+#endif
+#ifdef HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME
+      if (!program_invocation_short_name)
+       program_invocation_short_name = __argp_base_name (argv[0]);
+#endif
+    }
+#endif
+
   if (! (flags & ARGP_NO_HELP))
     /* Add our own options.  */
     {