forked from Imagelibrary/binutils-gdb
Initial creation of sourceware repository
This commit is contained in:
Stan Shebs
228
readline/nls.c
Normal file
228
readline/nls.c
Normal file
@@ -0,0 +1,228 @@
|
||||
/* nls.c -- skeletal internationalization code. */
|
||||
|
||||
/* Copyright (C) 1996 Free Software Foundation, Inc.
|
||||
|
||||
This file is part of the GNU Readline Library, a library for
|
||||
reading lines of text with interactive input and history editing.
|
||||
|
||||
The GNU Readline Library 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 1, or
|
||||
(at your option) any later version.
|
||||
|
||||
The GNU Readline Library 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.
|
||||
|
||||
The GNU General Public License is often shipped with GNU software, and
|
||||
is generally kept in a file called COPYING or LICENSE. If you do not
|
||||
have a copy of the license, write to the Free Software Foundation,
|
||||
675 Mass Ave, Cambridge, MA 02139, USA. */
|
||||
#define READLINE_LIBRARY
|
||||
|
||||
#if defined (HAVE_CONFIG_H)
|
||||
# include <config.h>
|
||||
#endif
|
||||
|
||||
#include <sys/types.h>
|
||||
|
||||
#if defined (HAVE_UNISTD_H)
|
||||
# include <unistd.h>
|
||||
#endif /* HAVE_UNISTD_H */
|
||||
|
||||
#if defined (HAVE_STDLIB_H)
|
||||
# include <stdlib.h>
|
||||
#else
|
||||
# include "ansi_stdlib.h"
|
||||
#endif /* HAVE_STDLIB_H */
|
||||
|
||||
#if defined (HAVE_LOCALE_H)
|
||||
# include <locale.h>
|
||||
#endif
|
||||
|
||||
#include <ctype.h>
|
||||
|
||||
#include "rldefs.h"
|
||||
|
||||
extern int _rl_convert_meta_chars_to_ascii;
|
||||
extern int _rl_output_meta_chars;
|
||||
extern int _rl_meta_flag;
|
||||
|
||||
/* Functions imported from shell.c */
|
||||
extern char *get_env_value ();
|
||||
|
||||
#if !defined (HAVE_SETLOCALE)
|
||||
/* A list of legal values for the LANG or LC_CTYPE environment variables.
|
||||
If a locale name in this list is the value for the LC_ALL, LC_CTYPE,
|
||||
or LANG environment variable (using the first of those with a value),
|
||||
readline eight-bit mode is enabled. */
|
||||
static char *legal_lang_values[] =
|
||||
{
|
||||
"iso88591",
|
||||
"iso88592",
|
||||
"iso88593",
|
||||
"iso88594",
|
||||
"iso88595",
|
||||
"iso88596",
|
||||
"iso88597",
|
||||
"iso88598",
|
||||
"iso88599",
|
||||
"iso885910",
|
||||
"koi8r",
|
||||
"koi8-r",
|
||||
0
|
||||
};
|
||||
|
||||
static char *normalize_codeset ();
|
||||
static char *find_codeset ();
|
||||
#endif /* !HAVE_SETLOCALE */
|
||||
|
||||
/* Check for LC_ALL, LC_CTYPE, and LANG and use the first with a value
|
||||
to decide the defaults for 8-bit character input and output. Returns
|
||||
1 if we set eight-bit mode. */
|
||||
int
|
||||
_rl_init_eightbit ()
|
||||
{
|
||||
/* If we have setlocale(3), just check the current LC_CTYPE category
|
||||
value, and go into eight-bit mode if it's not C or POSIX. */
|
||||
#if defined (HAVE_SETLOCALE)
|
||||
char *t;
|
||||
|
||||
/* Set the LC_CTYPE locale category from environment variables. */
|
||||
t = setlocale (LC_CTYPE, "");
|
||||
if (t && *t && (t[0] != 'C' || t[1]) && (STREQ (t, "POSIX") == 0))
|
||||
{
|
||||
_rl_meta_flag = 1;
|
||||
_rl_convert_meta_chars_to_ascii = 0;
|
||||
_rl_output_meta_chars = 1;
|
||||
return (1);
|
||||
}
|
||||
else
|
||||
return (0);
|
||||
|
||||
#else /* !HAVE_SETLOCALE */
|
||||
char *lspec, *t;
|
||||
int i;
|
||||
|
||||
/* We don't have setlocale. Finesse it. Check the environment for the
|
||||
appropriate variables and set eight-bit mode if they have the right
|
||||
values. */
|
||||
lspec = get_env_value ("LC_ALL");
|
||||
if (lspec == 0) lspec = get_env_value ("LC_CTYPE");
|
||||
if (lspec == 0) lspec = get_env_value ("LANG");
|
||||
if (lspec == 0 || (t = normalize_codeset (lspec)) == 0)
|
||||
return (0);
|
||||
for (i = 0; t && legal_lang_values[i]; i++)
|
||||
if (STREQ (t, legal_lang_values[i]))
|
||||
{
|
||||
_rl_meta_flag = 1;
|
||||
_rl_convert_meta_chars_to_ascii = 0;
|
||||
_rl_output_meta_chars = 1;
|
||||
break;
|
||||
}
|
||||
free (t);
|
||||
return (legal_lang_values[i] ? 1 : 0);
|
||||
|
||||
#endif /* !HAVE_SETLOCALE */
|
||||
}
|
||||
|
||||
#if !defined (HAVE_SETLOCALE)
|
||||
static char *
|
||||
normalize_codeset (codeset)
|
||||
char *codeset;
|
||||
{
|
||||
size_t namelen, i;
|
||||
int len, all_digits;
|
||||
char *wp, *retval;
|
||||
|
||||
codeset = find_codeset (codeset, &namelen);
|
||||
|
||||
if (codeset == 0)
|
||||
return (codeset);
|
||||
|
||||
all_digits = 1;
|
||||
for (len = 0, i = 0; i < namelen; i++)
|
||||
{
|
||||
if (isalnum (codeset[i]))
|
||||
{
|
||||
len++;
|
||||
all_digits &= isdigit (codeset[i]);
|
||||
}
|
||||
}
|
||||
|
||||
retval = (char *)malloc ((all_digits ? 3 : 0) + len + 1);
|
||||
if (retval == 0)
|
||||
return ((char *)0);
|
||||
|
||||
wp = retval;
|
||||
/* Add `iso' to beginning of an all-digit codeset */
|
||||
if (all_digits)
|
||||
{
|
||||
*wp++ = 'i';
|
||||
*wp++ = 's';
|
||||
*wp++ = 'o';
|
||||
}
|
||||
|
||||
for (i = 0; i < namelen; i++)
|
||||
if (isalpha (codeset[i]))
|
||||
*wp++ = (isupper (codeset[i])) ? tolower (codeset[i]) : codeset[i];
|
||||
else if (isdigit (codeset[i]))
|
||||
*wp++ = codeset[i];
|
||||
*wp = '\0';
|
||||
|
||||
return retval;
|
||||
}
|
||||
|
||||
/* Isolate codeset portion of locale specification. */
|
||||
static char *
|
||||
find_codeset (name, lenp)
|
||||
char *name;
|
||||
size_t *lenp;
|
||||
{
|
||||
char *cp, *language, *result;
|
||||
|
||||
cp = language = name;
|
||||
result = (char *)0;
|
||||
|
||||
while (*cp && *cp != '_' && *cp != '@' && *cp != '+' && *cp != ',')
|
||||
cp++;
|
||||
|
||||
/* This does not make sense: language has to be specified. As
|
||||
an exception we allow the variable to contain only the codeset
|
||||
name. Perhaps there are funny codeset names. */
|
||||
if (language == cp)
|
||||
{
|
||||
*lenp = strlen (language);
|
||||
result = language;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Next is the territory. */
|
||||
if (*cp == '_')
|
||||
do
|
||||
++cp;
|
||||
while (*cp && *cp != '.' && *cp != '@' && *cp != '+' && *cp != ',' && *cp != '_');
|
||||
|
||||
/* Now, finally, is the codeset. */
|
||||
result = cp;
|
||||
if (*cp == '.')
|
||||
do
|
||||
++cp;
|
||||
while (*cp && *cp != '@');
|
||||
|
||||
if (cp - result > 2)
|
||||
{
|
||||
result++;
|
||||
*lenp = cp - result;
|
||||
}
|
||||
else
|
||||
{
|
||||
*lenp = strlen (language);
|
||||
result = language;
|
||||
}
|
||||
}
|
||||
|
||||
return result;
|
||||
}
|
||||
#endif /* !HAVE_SETLOCALE */
|
||||
Reference in New Issue
Block a user