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-rw-r--r--locale/newlocale.c192
1 files changed, 192 insertions, 0 deletions
diff --git a/locale/newlocale.c b/locale/newlocale.c
new file mode 100644
index 0000000..d4e184b
--- /dev/null
+++ b/locale/newlocale.c
@@ -0,0 +1,192 @@
+/* Return a reference to locale information record.
+ Copyright (C) 1996, 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+ Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <argz.h>
+#include <errno.h>
+#include <locale.h>
+#include <stdlib.h>
+
+#include "localeinfo.h"
+
+
+/* Constant data defined in setlocale.c. */
+extern struct locale_data *const _nl_C[];
+
+/* Use this when we come along an error. */
+#define ERROR_RETURN \
+ do { \
+ __set_errno (EINVAL); \
+ return NULL; \
+ } while (0)
+
+
+__locale_t
+__newlocale (int category_mask, const char *locale, __locale_t base)
+{
+ /* Intermediate memory for result. */
+ const char *newnames[LC_ALL];
+ struct __locale_t result;
+ __locale_t result_ptr;
+ char *locale_path;
+ size_t locale_path_len;
+ const char *locpath_var;
+ int cnt;
+
+ /* We treat LC_ALL in the same way as if all bits were set. */
+ if (category_mask == LC_ALL)
+ category_mask = (1 << LC_ALL) - 1;
+
+ /* Sanity check for CATEGORY argument. */
+ if ((category_mask & ~(1 << LC_ALL) - 1) != 0)
+ ERROR_RETURN;
+
+ /* `newlocale' does not support asking for the locale name. */
+ if (locale == NULL)
+ ERROR_RETURN;
+
+ /* Allocate memory for the result. */
+ if (base != NULL)
+ {
+ if (base != NULL)
+ return base;
+
+ result = *base;
+ }
+ else
+ {
+ /* Fill with pointers to C locale data to . */
+ for (cnt = 0; cnt < LC_ALL; ++cnt)
+ result.__locales[cnt] = _nl_C[cnt];
+
+ /* If no category is to be set we return BASE if available or a
+ dataset using the C locale data. */
+ if (category_mask == 0)
+ {
+ result_ptr = (__locale_t) malloc (sizeof (struct __locale_t));
+ *result_ptr = result;
+
+ goto update;
+ }
+ }
+
+ /* We perhaps really have to load some data. So we determine the
+ path in which to look for the data now. The environment variable
+ `LOCPATH' must only be used when the binary has no SUID or SGID
+ bit set. */
+ locale_path = NULL;
+ locale_path_len = 0;
+
+ locpath_var = __secure_getenv ("LOCPATH");
+ if (locpath_var != NULL && locpath_var[0] != '\0')
+ if (__argz_create_sep (locpath_var, ':',
+ &locale_path, &locale_path_len) != 0)
+ return NULL;
+
+ if (__argz_append (&locale_path, &locale_path_len,
+ LOCALE_PATH, sizeof (LOCALE_PATH)) != 0)
+ return NULL;
+
+ /* Get the names for the locales we are interested in. We either
+ allow a composite name or a single name. */
+ for (cnt = 0; cnt < LC_ALL; ++cnt)
+ newnames[cnt] = locale;
+ if (strchr (locale, ';') != NULL)
+ {
+ /* This is a composite name. Make a copy and split it up. */
+ char *np = strdupa (locale);
+ char *cp;
+
+ while ((cp = strchr (np, '=')) != NULL)
+ {
+ for (cnt = 0; cnt < LC_ALL; ++cnt)
+ if ((size_t) (cp - np) == _nl_category_name_sizes[cnt]
+ && memcmp (np, _nl_category_names[cnt], cp - np) == 0)
+ break;
+
+ if (cnt == LC_ALL)
+ /* Bogus category name. */
+ ERROR_RETURN;
+
+ /* Found the category this clause sets. */
+ newnames[cnt] = ++cp;
+ cp = strchr (cp, ';');
+ if (cp != NULL)
+ {
+ /* Examine the next clause. */
+ *cp = '\0';
+ np = cp + 1;
+ }
+ else
+ /* This was the last clause. We are done. */
+ break;
+ }
+
+ for (cnt = 0; cnt < LC_ALL; ++cnt)
+ if ((category_mask & 1 << cnt) != 0 && newnames[cnt] == locale)
+ /* The composite name did not specify the category we need. */
+ ERROR_RETURN;
+ }
+
+ /* Now process all categories we are interested in. */
+ for (cnt = 0; cnt < LC_ALL; ++cnt)
+ if ((category_mask & 1 << cnt) != 0)
+ {
+ result.__locales[cnt] = _nl_find_locale (locale_path, locale_path_len,
+ cnt, &newnames[cnt]);
+ if (result.__locales[cnt] == NULL)
+ return NULL;
+ }
+
+ /* We successfully loaded all required data. */
+ if (base == NULL)
+ {
+ /* Allocate new structure. */
+ result_ptr = (__locale_t) malloc (sizeof (struct __locale_t));
+ if (result_ptr == NULL)
+ return NULL;
+
+ *result_ptr = result;
+ }
+ else
+ *(result_ptr = base) = result;
+
+ /* Update the special members. */
+ update:
+ {
+ union locale_data_value *ctypes = result_ptr->__locales[LC_CTYPE]->values;
+ result_ptr->__ctype_b = (const unsigned short int *)
+ (ctypes[_NL_ITEM_INDEX (_NL_CTYPE_CLASS)] .string);
+#if BYTE_ORDER == BIG_ENDIAN
+ result_ptr->__ctype_tolower = (const int *)
+ (ctypes[_NL_ITEM_INDEX (_NL_CTYPE_TOLOWER_EB)].string);
+ result_ptr->__ctype_toupper = (const int *)
+ (ctypes[_NL_ITEM_INDEX (_NL_CTYPE_TOUPPER_EB)].string);
+#elif BYTE_ORDER == LITTLE_ENDIAN
+ result_ptr->__ctype_tolower = (const int *)
+ (ctypes[_NL_ITEM_INDEX (_NL_CTYPE_TOLOWER_EL)].string);
+ result_ptr->__ctype_toupper = (const int *)
+ (ctypes[_NL_ITEM_INDEX (_NL_CTYPE_TOUPPER_EL)].string);
+#else
+#error bizarre byte order
+#endif
+ }
+
+ return result_ptr;
+}