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Diffstat (limited to 'string/strcoll_l.c')
-rw-r--r--string/strcoll_l.c514
1 files changed, 511 insertions, 3 deletions
diff --git a/string/strcoll_l.c b/string/strcoll_l.c
index 6611589ed0..c46921dcc9 100644
--- a/string/strcoll_l.c
+++ b/string/strcoll_l.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995,96,97,2002 Free Software Foundation, Inc.
+/* Copyright (C) 1995,96,97,2002, 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Written by Ulrich Drepper <drepper@gnu.org>, 1995.
@@ -17,7 +17,515 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
-#define USE_IN_EXTENDED_LOCALE_MODEL 1
-#include <strcoll.c>
+#include <assert.h>
+#include <langinfo.h>
+#include <locale.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+#ifndef STRING_TYPE
+# define STRING_TYPE char
+# define USTRING_TYPE unsigned char
+# define STRCOLL __strcoll_l
+# define STRCMP strcmp
+# define STRLEN strlen
+# define WEIGHT_H "../locale/weight.h"
+# define SUFFIX MB
+# define L(arg) arg
+#endif
+
+#define CONCAT(a,b) CONCAT1(a,b)
+#define CONCAT1(a,b) a##b
+
+#include "../locale/localeinfo.h"
+
+int
+STRCOLL (s1, s2, l)
+ const STRING_TYPE *s1;
+ const STRING_TYPE *s2;
+ __locale_t l;
+{
+ struct locale_data *current = l->__locales[LC_COLLATE];
+ uint_fast32_t nrules = current->values[_NL_ITEM_INDEX (_NL_COLLATE_NRULES)].word;
+ /* We don't assign the following values right away since it might be
+ unnecessary in case there are no rules. */
+ const unsigned char *rulesets;
+ const int32_t *table;
+ const USTRING_TYPE *weights;
+ const USTRING_TYPE *extra;
+ const int32_t *indirect;
+ uint_fast32_t pass;
+ int result = 0;
+ const USTRING_TYPE *us1;
+ const USTRING_TYPE *us2;
+ size_t s1len;
+ size_t s2len;
+ int32_t *idx1arr;
+ int32_t *idx2arr;
+ unsigned char *rule1arr;
+ unsigned char *rule2arr;
+ size_t idx1max;
+ size_t idx2max;
+ size_t idx1cnt;
+ size_t idx2cnt;
+ size_t idx1now;
+ size_t idx2now;
+ size_t backw1_stop;
+ size_t backw2_stop;
+ size_t backw1;
+ size_t backw2;
+ int val1;
+ int val2;
+ int position;
+ int seq1len;
+ int seq2len;
+ int use_malloc;
+
+#include WEIGHT_H
+
+ if (nrules == 0)
+ return STRCMP (s1, s2);
+
+ rulesets = (const unsigned char *)
+ current->values[_NL_ITEM_INDEX (_NL_COLLATE_RULESETS)].string;
+ table = (const int32_t *)
+ current->values[_NL_ITEM_INDEX (CONCAT(_NL_COLLATE_TABLE,SUFFIX))].string;
+ weights = (const USTRING_TYPE *)
+ current->values[_NL_ITEM_INDEX (CONCAT(_NL_COLLATE_WEIGHT,SUFFIX))].string;
+ extra = (const USTRING_TYPE *)
+ current->values[_NL_ITEM_INDEX (CONCAT(_NL_COLLATE_EXTRA,SUFFIX))].string;
+ indirect = (const int32_t *)
+ current->values[_NL_ITEM_INDEX (CONCAT(_NL_COLLATE_INDIRECT,SUFFIX))].string;
+ use_malloc = 0;
+
+ assert (((uintptr_t) table) % __alignof__ (table[0]) == 0);
+ assert (((uintptr_t) weights) % __alignof__ (weights[0]) == 0);
+ assert (((uintptr_t) extra) % __alignof__ (extra[0]) == 0);
+ assert (((uintptr_t) indirect) % __alignof__ (indirect[0]) == 0);
+
+ /* We need this a few times. */
+ s1len = STRLEN (s1);
+ s2len = STRLEN (s2);
+
+ /* Catch empty strings. */
+ if (__builtin_expect (s1len == 0, 0) || __builtin_expect (s2len == 0, 0))
+ return (s1len != 0) - (s2len != 0);
+
+ /* We need the elements of the strings as unsigned values since they
+ are used as indeces. */
+ us1 = (const USTRING_TYPE *) s1;
+ us2 = (const USTRING_TYPE *) s2;
+
+ /* Perform the first pass over the string and while doing this find
+ and store the weights for each character. Since we want this to
+ be as fast as possible we are using `alloca' to store the temporary
+ values. But since there is no limit on the length of the string
+ we have to use `malloc' if the string is too long. We should be
+ very conservative here.
+
+ Please note that the localedef programs makes sure that `position'
+ is not used at the first level. */
+ if (! __libc_use_alloca (s1len + s2len))
+ {
+ idx1arr = (int32_t *) malloc ((s1len + s2len) * (sizeof (int32_t) + 1));
+ idx2arr = &idx1arr[s1len];
+ rule1arr = (unsigned char *) &idx2arr[s2len];
+ rule2arr = &rule1arr[s1len];
+
+ if (idx1arr == NULL)
+ /* No memory. Well, go with the stack then.
+
+ XXX Once this implementation is stable we will handle this
+ differently. Instead of precomputing the indeces we will
+ do this in time. This means, though, that this happens for
+ every pass again. */
+ goto try_stack;
+ use_malloc = 1;
+ }
+ else
+ {
+ try_stack:
+ idx1arr = (int32_t *) alloca (s1len * sizeof (int32_t));
+ idx2arr = (int32_t *) alloca (s2len * sizeof (int32_t));
+ rule1arr = (unsigned char *) alloca (s1len);
+ rule2arr = (unsigned char *) alloca (s2len);
+ }
+
+ idx1cnt = 0;
+ idx2cnt = 0;
+ idx1max = 0;
+ idx2max = 0;
+ idx1now = 0;
+ idx2now = 0;
+ backw1_stop = ~0ul;
+ backw2_stop = ~0ul;
+ backw1 = ~0ul;
+ backw2 = ~0ul;
+ seq1len = 0;
+ seq2len = 0;
+ position = rulesets[0] & sort_position;
+ while (1)
+ {
+ val1 = 0;
+ val2 = 0;
+
+ /* Get the next non-IGNOREd element for string `s1'. */
+ if (seq1len == 0)
+ do
+ {
+ ++val1;
+
+ if (backw1_stop != ~0ul)
+ {
+ /* The is something pushed. */
+ if (backw1 == backw1_stop)
+ {
+ /* The last pushed character was handled. Continue
+ with forward characters. */
+ if (idx1cnt < idx1max)
+ idx1now = idx1cnt;
+ else
+ /* Nothing anymore. The backward sequence ended with
+ the last sequence in the string. Note that seq1len
+ is still zero. */
+ break;
+ }
+ else
+ idx1now = --backw1;
+ }
+ else
+ {
+ backw1_stop = idx1max;
+
+ while (*us1 != L('\0'))
+ {
+ int32_t tmp = findidx (&us1);
+ rule1arr[idx1max] = tmp >> 24;
+ idx1arr[idx1max] = tmp & 0xffffff;
+ idx1cnt = idx1max++;
+
+ if ((rulesets[rule1arr[idx1cnt] * nrules]
+ & sort_backward) == 0)
+ /* No more backward characters to push. */
+ break;
+ ++idx1cnt;
+ }
+
+ if (backw1_stop >= idx1cnt)
+ {
+ /* No sequence at all or just one. */
+ if (idx1cnt == idx1max || backw1_stop > idx1cnt)
+ /* Note that seq1len is still zero. */
+ break;
+
+ backw1_stop = ~0ul;
+ idx1now = idx1cnt;
+ }
+ else
+ /* We pushed backward sequences. */
+ idx1now = backw1 = idx1cnt - 1;
+ }
+ }
+ while ((seq1len = weights[idx1arr[idx1now]++]) == 0);
+
+ /* And the same for string `s2'. */
+ if (seq2len == 0)
+ do
+ {
+ ++val2;
+
+ if (backw2_stop != ~0ul)
+ {
+ /* The is something pushed. */
+ if (backw2 == backw2_stop)
+ {
+ /* The last pushed character was handled. Continue
+ with forward characters. */
+ if (idx2cnt < idx2max)
+ idx2now = idx2cnt;
+ else
+ /* Nothing anymore. The backward sequence ended with
+ the last sequence in the string. Note that seq2len
+ is still zero. */
+ break;
+ }
+ else
+ idx2now = --backw2;
+ }
+ else
+ {
+ backw2_stop = idx2max;
+
+ while (*us2 != L('\0'))
+ {
+ int32_t tmp = findidx (&us2);
+ rule2arr[idx2max] = tmp >> 24;
+ idx2arr[idx2max] = tmp & 0xffffff;
+ idx2cnt = idx2max++;
+
+ if ((rulesets[rule2arr[idx2cnt] * nrules]
+ & sort_backward) == 0)
+ /* No more backward characters to push. */
+ break;
+ ++idx2cnt;
+ }
+
+ if (backw2_stop >= idx2cnt)
+ {
+ /* No sequence at all or just one. */
+ if (idx2cnt == idx2max || backw2_stop > idx2cnt)
+ /* Note that seq1len is still zero. */
+ break;
+
+ backw2_stop = ~0ul;
+ idx2now = idx2cnt;
+ }
+ else
+ /* We pushed backward sequences. */
+ idx2now = backw2 = idx2cnt - 1;
+ }
+ }
+ while ((seq2len = weights[idx2arr[idx2now]++]) == 0);
+
+ /* See whether any or both strings are empty. */
+ if (seq1len == 0 || seq2len == 0)
+ {
+ if (seq1len == seq2len)
+ /* Both ended. So far so good, both strings are equal at the
+ first level. */
+ break;
+
+ /* This means one string is shorter than the other. Find out
+ which one and return an appropriate value. */
+ result = seq1len == 0 ? -1 : 1;
+ goto free_and_return;
+ }
+
+ /* Test for position if necessary. */
+ if (position && val1 != val2)
+ {
+ result = val1 - val2;
+ goto free_and_return;
+ }
+
+ /* Compare the two sequences. */
+ do
+ {
+ if (weights[idx1arr[idx1now]] != weights[idx2arr[idx2now]])
+ {
+ /* The sequences differ. */
+ result = weights[idx1arr[idx1now]] - weights[idx2arr[idx2now]];
+ goto free_and_return;
+ }
+
+ /* Increment the offsets. */
+ ++idx1arr[idx1now];
+ ++idx2arr[idx2now];
+
+ --seq1len;
+ --seq2len;
+ }
+ while (seq1len > 0 && seq2len > 0);
+
+ if (position && seq1len != seq2len)
+ {
+ result = seq1len - seq2len;
+ goto free_and_return;
+ }
+ }
+
+ /* Now the remaining passes over the weights. We now use the
+ indeces we found before. */
+ for (pass = 1; pass < nrules; ++pass)
+ {
+ /* We assume that if a rule has defined `position' in one section
+ this is true for all of them. */
+ idx1cnt = 0;
+ idx2cnt = 0;
+ backw1_stop = ~0ul;
+ backw2_stop = ~0ul;
+ backw1 = ~0ul;
+ backw2 = ~0ul;
+ position = rulesets[rule1arr[0] * nrules + pass] & sort_position;
+
+ while (1)
+ {
+ val1 = 0;
+ val2 = 0;
+
+ /* Get the next non-IGNOREd element for string `s1'. */
+ if (seq1len == 0)
+ do
+ {
+ ++val1;
+
+ if (backw1_stop != ~0ul)
+ {
+ /* The is something pushed. */
+ if (backw1 == backw1_stop)
+ {
+ /* The last pushed character was handled. Continue
+ with forward characters. */
+ if (idx1cnt < idx1max)
+ idx1now = idx1cnt;
+ else
+ {
+ /* Nothing anymore. The backward sequence
+ ended with the last sequence in the string. */
+ idx1now = ~0ul;
+ break;
+ }
+ }
+ else
+ idx1now = --backw1;
+ }
+ else
+ {
+ backw1_stop = idx1cnt;
+
+ while (idx1cnt < idx1max)
+ {
+ if ((rulesets[rule1arr[idx1cnt] * nrules + pass]
+ & sort_backward) == 0)
+ /* No more backward characters to push. */
+ break;
+ ++idx1cnt;
+ }
+
+ if (backw1_stop == idx1cnt)
+ {
+ /* No sequence at all or just one. */
+ if (idx1cnt == idx1max)
+ /* Note that seq1len is still zero. */
+ break;
+
+ backw1_stop = ~0ul;
+ idx1now = idx1cnt++;
+ }
+ else
+ /* We pushed backward sequences. */
+ idx1now = backw1 = idx1cnt - 1;
+ }
+ }
+ while ((seq1len = weights[idx1arr[idx1now]++]) == 0);
+
+ /* And the same for string `s2'. */
+ if (seq2len == 0)
+ do
+ {
+ ++val2;
+
+ if (backw2_stop != ~0ul)
+ {
+ /* The is something pushed. */
+ if (backw2 == backw2_stop)
+ {
+ /* The last pushed character was handled. Continue
+ with forward characters. */
+ if (idx2cnt < idx2max)
+ idx2now = idx2cnt;
+ else
+ {
+ /* Nothing anymore. The backward sequence
+ ended with the last sequence in the string. */
+ idx2now = ~0ul;
+ break;
+ }
+ }
+ else
+ idx2now = --backw2;
+ }
+ else
+ {
+ backw2_stop = idx2cnt;
+
+ while (idx2cnt < idx2max)
+ {
+ if ((rulesets[rule2arr[idx2cnt] * nrules + pass]
+ & sort_backward) == 0)
+ /* No more backward characters to push. */
+ break;
+ ++idx2cnt;
+ }
+
+ if (backw2_stop == idx2cnt)
+ {
+ /* No sequence at all or just one. */
+ if (idx2cnt == idx2max)
+ /* Note that seq2len is still zero. */
+ break;
+
+ backw2_stop = ~0ul;
+ idx2now = idx2cnt++;
+ }
+ else
+ /* We pushed backward sequences. */
+ idx2now = backw2 = idx2cnt - 1;
+ }
+ }
+ while ((seq2len = weights[idx2arr[idx2now]++]) == 0);
+
+ /* See whether any or both strings are empty. */
+ if (seq1len == 0 || seq2len == 0)
+ {
+ if (seq1len == seq2len)
+ /* Both ended. So far so good, both strings are equal
+ at this level. */
+ break;
+
+ /* This means one string is shorter than the other. Find out
+ which one and return an appropriate value. */
+ result = seq1len == 0 ? -1 : 1;
+ goto free_and_return;
+ }
+
+ /* Test for position if necessary. */
+ if (position && val1 != val2)
+ {
+ result = val1 - val2;
+ goto free_and_return;
+ }
+
+ /* Compare the two sequences. */
+ do
+ {
+ if (weights[idx1arr[idx1now]] != weights[idx2arr[idx2now]])
+ {
+ /* The sequences differ. */
+ result = (weights[idx1arr[idx1now]]
+ - weights[idx2arr[idx2now]]);
+ goto free_and_return;
+ }
+
+ /* Increment the offsets. */
+ ++idx1arr[idx1now];
+ ++idx2arr[idx2now];
+
+ --seq1len;
+ --seq2len;
+ }
+ while (seq1len > 0 && seq2len > 0);
+
+ if (position && seq1len != seq2len)
+ {
+ result = seq1len - seq2len;
+ goto free_and_return;
+ }
+ }
+ }
+
+ /* Free the memory if needed. */
+ free_and_return:
+ if (use_malloc)
+ free (idx1arr);
+
+ return result;
+}
+libc_hidden_def (STRCOLL)
+
+#ifndef WIDE_CHAR_VERSION
weak_alias (__strcoll_l, strcoll_l)
+#endif