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authorUlrich Drepper <drepper@redhat.com>2009-07-20 20:04:42 -0700
committerUlrich Drepper <drepper@redhat.com>2009-07-20 20:04:42 -0700
commit8a4494506d9175a2c205ff8d39dc58abd83682eb (patch)
treef8a40477eef8ff0f54ceaab5a2f358b3d6f47b9a /locale/programs
parentc3db953c165baa444d01ee6c04ef0c51eba42522 (diff)
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Check generated locale for non-ASCII 8-bit characters with case conversion.
If a locale does not have 8-bit characters with case conversion which are different from the ASCII conversion (±0x20) then we can perform some optimizations. These will follow later.
Diffstat (limited to 'locale/programs')
-rw-r--r--locale/programs/ld-ctype.c27
1 files changed, 26 insertions, 1 deletions
diff --git a/locale/programs/ld-ctype.c b/locale/programs/ld-ctype.c
index d4474bf1a2..376a02c2f0 100644
--- a/locale/programs/ld-ctype.c
+++ b/locale/programs/ld-ctype.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995-2006, 2007 Free Software Foundation, Inc.
+/* Copyright (C) 1995-2006, 2007, 2009 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@gnu.org>, 1995.
@@ -181,6 +181,7 @@ struct locale_ctype_t
size_t default_missing_lineno;
uint32_t to_nonascii;
+ uint32_t nonascii_case;
/* The arrays for the binary representation. */
char_class_t *ctype_b;
@@ -625,6 +626,27 @@ character <SP> not defined in character map")));
else
ctype->class256_collection[space_seq->bytes[0]] |= BIT (tok_print);
+ /* Check whether all single-byte characters make to their upper/lowercase
+ equivalent according to the ASCII rules. */
+ for (cnt = 'A'; cnt <= 'Z'; ++cnt)
+ {
+ uint32_t uppval = ctype->map256_collection[0][cnt];
+ uint32_t lowval = ctype->map256_collection[1][cnt];
+ uint32_t lowuppval = ctype->map256_collection[0][lowval];
+ uint32_t lowlowval = ctype->map256_collection[1][lowval];
+
+ if (uppval != cnt
+ || lowval != cnt + 0x20
+ || lowuppval != cnt
+ || lowlowval != cnt + 0x20)
+ ctype->nonascii_case = 1;
+ }
+ for (cnt = 0; cnt < 256; ++cnt)
+ if (cnt < 'A' || (cnt > 'Z' && cnt < 'a') || cnt > 'z')
+ if (ctype->map256_collection[0][cnt] != cnt
+ || ctype->map256_collection[1][cnt] != cnt)
+ ctype->nonascii_case = 1;
+
/* Now that the tests are done make sure the name array contains all
characters which are handled in the WIDTH section of the
character set definition file. */
@@ -1045,6 +1067,9 @@ ctype_output (struct localedef_t *locale, const struct charmap_t *charmap,
CTYPE_DATA (_NL_CTYPE_MAP_TO_NONASCII,
&ctype->to_nonascii, sizeof (uint32_t));
+ CTYPE_DATA (_NL_CTYPE_NONASCII_CASE,
+ &ctype->nonascii_case, sizeof (uint32_t));
+
case _NL_ITEM_INDEX (_NL_CTYPE_INDIGITS_MB_LEN):
iov[2 + elem + offset].iov_base = alloca (sizeof (uint32_t));
iov[2 + elem + offset].iov_len = sizeof (uint32_t);