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-rw-r--r--contrib/bind9/lib/isccc/symtab.c280
1 files changed, 0 insertions, 280 deletions
diff --git a/contrib/bind9/lib/isccc/symtab.c b/contrib/bind9/lib/isccc/symtab.c
deleted file mode 100644
index 7ec6d55..0000000
--- a/contrib/bind9/lib/isccc/symtab.c
+++ /dev/null
@@ -1,280 +0,0 @@
-/*
- * Portions Copyright (C) 2004, 2005, 2007 Internet Systems Consortium, Inc. ("ISC")
- * Portions Copyright (C) 2001 Internet Software Consortium.
- * Portions Copyright (C) 2001 Nominum, Inc.
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND ISC AND NOMINUM DISCLAIMS ALL
- * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY
- * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- */
-
-/* $Id: symtab.c,v 1.5.18.4 2007/09/13 23:46:26 tbox Exp $ */
-
-/*! \file */
-
-#include <config.h>
-
-#include <ctype.h>
-#include <stdlib.h>
-
-#include <isc/assertions.h>
-#include <isc/magic.h>
-#include <isc/string.h>
-
-#include <isccc/result.h>
-#include <isccc/symtab.h>
-#include <isccc/util.h>
-
-typedef struct elt {
- char * key;
- unsigned int type;
- isccc_symvalue_t value;
- ISC_LINK(struct elt) link;
-} elt_t;
-
-typedef ISC_LIST(elt_t) eltlist_t;
-
-#define SYMTAB_MAGIC ISC_MAGIC('S', 'y', 'm', 'T')
-#define VALID_SYMTAB(st) ISC_MAGIC_VALID(st, SYMTAB_MAGIC)
-
-struct isccc_symtab {
- unsigned int magic;
- unsigned int size;
- eltlist_t * table;
- isccc_symtabundefaction_t undefine_action;
- void * undefine_arg;
- isc_boolean_t case_sensitive;
-};
-
-isc_result_t
-isccc_symtab_create(unsigned int size,
- isccc_symtabundefaction_t undefine_action,
- void *undefine_arg,
- isc_boolean_t case_sensitive,
- isccc_symtab_t **symtabp)
-{
- isccc_symtab_t *symtab;
- unsigned int i;
-
- REQUIRE(symtabp != NULL && *symtabp == NULL);
- REQUIRE(size > 0); /* Should be prime. */
-
- symtab = malloc(sizeof(*symtab));
- if (symtab == NULL)
- return (ISC_R_NOMEMORY);
- symtab->table = malloc(size * sizeof(eltlist_t));
- if (symtab->table == NULL) {
- free(symtab);
- return (ISC_R_NOMEMORY);
- }
- for (i = 0; i < size; i++)
- ISC_LIST_INIT(symtab->table[i]);
- symtab->size = size;
- symtab->undefine_action = undefine_action;
- symtab->undefine_arg = undefine_arg;
- symtab->case_sensitive = case_sensitive;
- symtab->magic = SYMTAB_MAGIC;
-
- *symtabp = symtab;
-
- return (ISC_R_SUCCESS);
-}
-
-static inline void
-free_elt(isccc_symtab_t *symtab, unsigned int bucket, elt_t *elt) {
- ISC_LIST_UNLINK(symtab->table[bucket], elt, link);
- if (symtab->undefine_action != NULL)
- (symtab->undefine_action)(elt->key, elt->type, elt->value,
- symtab->undefine_arg);
- free(elt);
-}
-
-void
-isccc_symtab_destroy(isccc_symtab_t **symtabp) {
- isccc_symtab_t *symtab;
- unsigned int i;
- elt_t *elt, *nelt;
-
- REQUIRE(symtabp != NULL);
- symtab = *symtabp;
- REQUIRE(VALID_SYMTAB(symtab));
-
- for (i = 0; i < symtab->size; i++) {
- for (elt = ISC_LIST_HEAD(symtab->table[i]);
- elt != NULL;
- elt = nelt) {
- nelt = ISC_LIST_NEXT(elt, link);
- free_elt(symtab, i, elt);
- }
- }
- free(symtab->table);
- symtab->magic = 0;
- free(symtab);
-
- *symtabp = NULL;
-}
-
-static inline unsigned int
-hash(const char *key, isc_boolean_t case_sensitive) {
- const char *s;
- unsigned int h = 0;
- unsigned int g;
- int c;
-
- /*
- * P. J. Weinberger's hash function, adapted from p. 436 of
- * _Compilers: Principles, Techniques, and Tools_, Aho, Sethi
- * and Ullman, Addison-Wesley, 1986, ISBN 0-201-10088-6.
- */
-
- if (case_sensitive) {
- for (s = key; *s != '\0'; s++) {
- h = ( h << 4 ) + *s;
- if ((g = ( h & 0xf0000000 )) != 0) {
- h = h ^ (g >> 24);
- h = h ^ g;
- }
- }
- } else {
- for (s = key; *s != '\0'; s++) {
- c = *s;
- c = tolower((unsigned char)c);
- h = ( h << 4 ) + c;
- if ((g = ( h & 0xf0000000 )) != 0) {
- h = h ^ (g >> 24);
- h = h ^ g;
- }
- }
- }
-
- return (h);
-}
-
-#define FIND(s, k, t, b, e) \
- b = hash((k), (s)->case_sensitive) % (s)->size; \
- if ((s)->case_sensitive) { \
- for (e = ISC_LIST_HEAD((s)->table[b]); \
- e != NULL; \
- e = ISC_LIST_NEXT(e, link)) { \
- if (((t) == 0 || e->type == (t)) && \
- strcmp(e->key, (k)) == 0) \
- break; \
- } \
- } else { \
- for (e = ISC_LIST_HEAD((s)->table[b]); \
- e != NULL; \
- e = ISC_LIST_NEXT(e, link)) { \
- if (((t) == 0 || e->type == (t)) && \
- strcasecmp(e->key, (k)) == 0) \
- break; \
- } \
- }
-
-isc_result_t
-isccc_symtab_lookup(isccc_symtab_t *symtab, const char *key, unsigned int type,
- isccc_symvalue_t *value)
-{
- unsigned int bucket;
- elt_t *elt;
-
- REQUIRE(VALID_SYMTAB(symtab));
- REQUIRE(key != NULL);
-
- FIND(symtab, key, type, bucket, elt);
-
- if (elt == NULL)
- return (ISC_R_NOTFOUND);
-
- if (value != NULL)
- *value = elt->value;
-
- return (ISC_R_SUCCESS);
-}
-
-isc_result_t
-isccc_symtab_define(isccc_symtab_t *symtab, char *key, unsigned int type,
- isccc_symvalue_t value, isccc_symexists_t exists_policy)
-{
- unsigned int bucket;
- elt_t *elt;
-
- REQUIRE(VALID_SYMTAB(symtab));
- REQUIRE(key != NULL);
- REQUIRE(type != 0);
-
- FIND(symtab, key, type, bucket, elt);
-
- if (exists_policy != isccc_symexists_add && elt != NULL) {
- if (exists_policy == isccc_symexists_reject)
- return (ISC_R_EXISTS);
- INSIST(exists_policy == isccc_symexists_replace);
- ISC_LIST_UNLINK(symtab->table[bucket], elt, link);
- if (symtab->undefine_action != NULL)
- (symtab->undefine_action)(elt->key, elt->type,
- elt->value,
- symtab->undefine_arg);
- } else {
- elt = malloc(sizeof(*elt));
- if (elt == NULL)
- return (ISC_R_NOMEMORY);
- ISC_LINK_INIT(elt, link);
- }
-
- elt->key = key;
- elt->type = type;
- elt->value = value;
-
- /*
- * We prepend so that the most recent definition will be found.
- */
- ISC_LIST_PREPEND(symtab->table[bucket], elt, link);
-
- return (ISC_R_SUCCESS);
-}
-
-isc_result_t
-isccc_symtab_undefine(isccc_symtab_t *symtab, const char *key, unsigned int type) {
- unsigned int bucket;
- elt_t *elt;
-
- REQUIRE(VALID_SYMTAB(symtab));
- REQUIRE(key != NULL);
-
- FIND(symtab, key, type, bucket, elt);
-
- if (elt == NULL)
- return (ISC_R_NOTFOUND);
-
- free_elt(symtab, bucket, elt);
-
- return (ISC_R_SUCCESS);
-}
-
-void
-isccc_symtab_foreach(isccc_symtab_t *symtab, isccc_symtabforeachaction_t action,
- void *arg)
-{
- unsigned int i;
- elt_t *elt, *nelt;
-
- REQUIRE(VALID_SYMTAB(symtab));
- REQUIRE(action != NULL);
-
- for (i = 0; i < symtab->size; i++) {
- for (elt = ISC_LIST_HEAD(symtab->table[i]);
- elt != NULL;
- elt = nelt) {
- nelt = ISC_LIST_NEXT(elt, link);
- if ((action)(elt->key, elt->type, elt->value, arg))
- free_elt(symtab, i, elt);
- }
- }
-}
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