/* argmatch.c -- find a match for a string in an array
- Copyright (C) 1990, 1998 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
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 !HAVE_SETLOCALE
-# define setlocale(Category, Locale) /* empty */
-#endif
-
-#if ENABLE_NLS
-# include <libintl.h>
-# define _(Text) gettext (Text)
-#else
-# define bindtextdomain(Domain, Directory) /* empty */
-# define textdomain(Domain) /* empty */
-# define _(Text) Text
-#endif
-
-#ifndef EXIT_BADARG
-# define EXIT_BADARG 1
-#endif
+#include "gettext.h"
+#define _(msgid) gettext (msgid)
+#include "error.h"
#include "quotearg.h"
+#include "quote.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.*/
+#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
+ literal_quoting_style. */
#ifndef ARGMATCH_QUOTING_STYLE
-# define ARGMATCH_QUOTING_STYLE c_quoting_style
+# define ARGMATCH_QUOTING_STYLE locale_quoting_style
#endif
-#if !HAVE_STRNCASECMP
-# include <ctype.h>
-/* Compare no more than N characters of S1 and S2,
- ignoring case, returning less than, equal to or
- greater than zero if S1 is lexicographically less
- than, equal to or greater than S2. */
-int
-strncasecmp (const char *s1, const char *s2, size_t n)
-{
- register const unsigned char *p1 = (const unsigned char *) s1;
- register const unsigned char *p2 = (const unsigned char *) s2;
- unsigned char c1, c2;
-
- if (p1 == p2 || n == 0)
- return 0;
+/* Non failing version of argmatch call this function after failing. */
+#ifndef ARGMATCH_DIE
+# include "exitfail.h"
+# define ARGMATCH_DIE exit (exit_failure)
+#endif
- do
- {
- c1 = tolower (*p1++);
- c2 = tolower (*p2++);
- if (c1 == '\0' || c1 != c2)
- return c1 - c2;
- } while (--n > 0);
+#ifdef ARGMATCH_DIE_DECL
+ARGMATCH_DIE_DECL;
+#endif
- return c1 - c2;
+static void
+__argmatch_die (void)
+{
+ ARGMATCH_DIE;
}
-#endif
-extern char *program_name;
+/* 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
+ 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 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 (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
- desambiguise. */
- 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;
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.
- KIND is a description of the type of entity that was being matched.
+ 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 *kind, const char *value, int problem)
+argmatch_invalid (const char *context, const char *value, ptrdiff_t problem)
{
- enum quoting_style saved_quoting_style;
-
- /* 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);
-
- /* There is an error */
- fprintf (stderr, "%s: ", program_name);
- if (problem == -1)
- fprintf (stderr, _("invalid argument %s for `%s'"),
- quotearg (value), kind);
- else /* Assume -2. */
- fprintf (stderr, _("ambiguous argument %s for `%s'"),
- quotearg (value), kind);
- putc ('\n', stderr);
+ 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.
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;
- const char * last_val = NULL;
+ 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:"));
- for (i = 0 ; arglist[i] ; i++)
+ 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);
}
-/* Call __argmatch_internal, but handle the error so that it never
- returns. Errors are reported to the users with a list of valid
- values.
+/* Never failing versions of the previous functions.
- KIND is a description of the type of entity that was being matched.
- ARG, ARGLIST, and SENSITIVE are the same as in __argmatch_internal
- VALIST, and VALSIZE are the same as in valid_args */
-int
-__xargmatch_internal (const char *kind, const char *arg,
- const char *const *arglist,
- const char *vallist, size_t valsize,
- int sensitive)
+ CONTEXT is the context for which argmatch is called (e.g.,
+ "--version-control", or "$VERSION_CONTROL" etc.). Upon failure,
+ calls the (supposed never to return) function EXIT_FN. */
+
+ptrdiff_t
+__xargmatch_internal (const char *context,
+ const char *arg, const char *const *arglist,
+ const char *vallist, size_t valsize,
+ argmatch_exit_fn exit_fn)
{
- int i;
-
- i = __argmatch_internal (arg, arglist, vallist, valsize, sensitive);
- if (i >= 0)
- {
- /* Success */
- return i;
- }
- else
- {
- /* Failure */
- argmatch_invalid (kind, arg, i);
- argmatch_valid (arglist, vallist, valsize);
- exit (EXIT_BADARG);
- }
- return -1; /* To please some compilers */
+ ptrdiff_t res = argmatch (arg, arglist, vallist, valsize);
+ if (res >= 0)
+ /* Success. */
+ return res;
+
+ /* We failed. Explain why. */
+ argmatch_invalid (context, arg, res);
+ argmatch_valid (arglist, vallist, valsize);
+ (*exit_fn) ();
+
+ return -1; /* To please the compilers. */
}
/* Look for VALUE in VALLIST, an array of objects of size VALSIZE and
return the first corresponding argument in ARGLIST */
const char *
-argmatch_to_argument (char * value,
- const char *const *arglist,
- const char *vallist, size_t valsize)
+argmatch_to_argument (const char *value,
+ const char *const *arglist,
+ const char *vallist, size_t valsize)
{
- int i;
-
- for (i = 0 ; arglist [i] ; i++)
+ size_t i;
+
+ for (i = 0; arglist[i]; i++)
if (!memcmp (value, vallist + valsize * i, valsize))
- return arglist [i];
+ return arglist[i];
return NULL;
}
/*
* Based on "getversion.c" by David MacKenzie <djm@gnu.ai.mit.edu>
*/
-char * program_name;
-extern const char * getenv ();
+char *program_name;
/* 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
values */
static const char *const backup_args[] =
{
- "no", "none", "off",
- "simple", "never",
- "existing", "nil",
- "numbered", "t",
+ "no", "none", "off",
+ "simple", "never",
+ "existing", "nil",
+ "numbered", "t",
0
};
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)
+main (int argc, const char *const *argv)
{
- const char * cp;
- enum backup_type backup_type = none;
+ const char *cp;
+ enum backup_type backup_type = no_backups;
- program_name = (char *) argv [0];
+ program_name = (char *) argv[0];
if (argc > 2)
{
}
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;
}
projects / gnulib.git / blobdiff