diff options
Diffstat (limited to 'usr/src/tools/ctf/cvt/strtab.c')
-rw-r--r-- | usr/src/tools/ctf/cvt/strtab.c | 258 |
1 files changed, 0 insertions, 258 deletions
diff --git a/usr/src/tools/ctf/cvt/strtab.c b/usr/src/tools/ctf/cvt/strtab.c deleted file mode 100644 index ba6b7d86d0..0000000000 --- a/usr/src/tools/ctf/cvt/strtab.c +++ /dev/null @@ -1,258 +0,0 @@ -/* - * CDDL HEADER START - * - * The contents of this file are subject to the terms of the - * Common Development and Distribution License, Version 1.0 only - * (the "License"). You may not use this file except in compliance - * with the License. - * - * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE - * or http://www.opensolaris.org/os/licensing. - * See the License for the specific language governing permissions - * and limitations under the License. - * - * When distributing Covered Code, include this CDDL HEADER in each - * file and include the License file at usr/src/OPENSOLARIS.LICENSE. - * If applicable, add the following below this CDDL HEADER, with the - * fields enclosed by brackets "[]" replaced with your own identifying - * information: Portions Copyright [yyyy] [name of copyright owner] - * - * CDDL HEADER END - */ -/* - * Copyright (c) 2001 by Sun Microsystems, Inc. - * All rights reserved. - */ - -#pragma ident "%Z%%M% %I% %E% SMI" - -#include <sys/types.h> -#include <sys/sysmacros.h> -#include <strings.h> -#include <stdlib.h> -#include <stdio.h> - -#include "strtab.h" -#include "memory.h" - -#define STRTAB_HASHSZ 211 /* use a prime number of hash buckets */ -#define STRTAB_BUFSZ (64 * 1024) /* use 64K data buffers by default */ - -static void -strtab_grow(strtab_t *sp) -{ - sp->str_nbufs++; - sp->str_bufs = xrealloc(sp->str_bufs, sp->str_nbufs * sizeof (char *)); - sp->str_ptr = xmalloc(sp->str_bufsz); - sp->str_bufs[sp->str_nbufs - 1] = sp->str_ptr; -} - -void -strtab_create(strtab_t *sp) -{ - sp->str_hash = xcalloc(STRTAB_HASHSZ * sizeof (strhash_t *)); - sp->str_hashsz = STRTAB_HASHSZ; - sp->str_bufs = NULL; - sp->str_ptr = NULL; - sp->str_nbufs = 0; - sp->str_bufsz = STRTAB_BUFSZ; - sp->str_nstrs = 1; - sp->str_size = 1; - - strtab_grow(sp); - *sp->str_ptr++ = '\0'; -} - -void -strtab_destroy(strtab_t *sp) -{ - strhash_t *hp, *hq; - ulong_t i; - - for (i = 0; i < sp->str_hashsz; i++) { - for (hp = sp->str_hash[i]; hp != NULL; hp = hq) { - hq = hp->str_next; - free(hp); - } - } - - for (i = 0; i < sp->str_nbufs; i++) - free(sp->str_bufs[i]); - - free(sp->str_hash); - free(sp->str_bufs); -} - -static ulong_t -strtab_hash(const char *key, size_t *len) -{ - ulong_t g, h = 0; - const char *p; - size_t n = 0; - - for (p = key; *p != '\0'; p++, n++) { - h = (h << 4) + *p; - - if ((g = (h & 0xf0000000)) != 0) { - h ^= (g >> 24); - h ^= g; - } - } - - *len = n; - return (h); -} - -static int -strtab_compare(strtab_t *sp, strhash_t *hp, const char *str, size_t len) -{ - ulong_t b = hp->str_buf; - const char *buf = hp->str_data; - size_t resid, n; - int rv; - - while (len != 0) { - if (buf == sp->str_bufs[b] + sp->str_bufsz) - buf = sp->str_bufs[++b]; - - resid = sp->str_bufs[b] + sp->str_bufsz - buf; - n = MIN(resid, len); - - if ((rv = strncmp(buf, str, n)) != 0) - return (rv); - - buf += n; - str += n; - len -= n; - } - - return (0); -} - -static void -strtab_copyin(strtab_t *sp, const char *str, size_t len) -{ - ulong_t b = sp->str_nbufs - 1; - size_t resid, n; - - while (len != 0) { - if (sp->str_ptr == sp->str_bufs[b] + sp->str_bufsz) { - strtab_grow(sp); - b++; - } - - resid = sp->str_bufs[b] + sp->str_bufsz - sp->str_ptr; - n = MIN(resid, len); - bcopy(str, sp->str_ptr, n); - - sp->str_ptr += n; - str += n; - len -= n; - } -} - -size_t -strtab_insert(strtab_t *sp, const char *str) -{ - strhash_t *hp; - size_t len; - ulong_t h; - - if (str == NULL || str[0] == '\0') - return (0); /* we keep a \0 at offset 0 to simplify things */ - - h = strtab_hash(str, &len) % sp->str_hashsz; - - /* - * If the string is already in our hash table, just return the offset - * of the existing string element and do not add a duplicate string. - */ - for (hp = sp->str_hash[h]; hp != NULL; hp = hp->str_next) { - if (strtab_compare(sp, hp, str, len + 1) == 0) - return (hp->str_off); - } - - /* - * Create a new hash bucket, initialize it, and insert it at the front - * of the hash chain for the appropriate bucket. - */ - hp = xmalloc(sizeof (strhash_t)); - - hp->str_data = sp->str_ptr; - hp->str_buf = sp->str_nbufs - 1; - hp->str_off = sp->str_size; - hp->str_len = len; - hp->str_next = sp->str_hash[h]; - - sp->str_hash[h] = hp; - - /* - * Now copy the string data into our buffer list, and then update - * the global counts of strings and bytes. Return str's byte offset. - */ - strtab_copyin(sp, str, len + 1); - sp->str_nstrs++; - sp->str_size += len + 1; - - return (hp->str_off); -} - -size_t -strtab_size(const strtab_t *sp) -{ - return (sp->str_size); -} - -ssize_t -strtab_write(const strtab_t *sp, - ssize_t (*func)(const void *, size_t, void *), void *priv) -{ - ssize_t res, total = 0; - ulong_t i; - size_t n; - - for (i = 0; i < sp->str_nbufs; i++, total += res) { - if (i == sp->str_nbufs - 1) - n = sp->str_ptr - sp->str_bufs[i]; - else - n = sp->str_bufsz; - - if ((res = func(sp->str_bufs[i], n, priv)) <= 0) - break; - } - - if (total == 0 && sp->str_size != 0) - return (-1); - - return (total); -} - -void -strtab_print(const strtab_t *sp) -{ - const strhash_t *hp; - ulong_t i; - - for (i = 0; i < sp->str_hashsz; i++) { - for (hp = sp->str_hash[i]; hp != NULL; hp = hp->str_next) { - const char *buf = hp->str_data; - ulong_t b = hp->str_buf; - size_t resid, len, n; - - (void) printf("[%lu] %lu \"", (ulong_t)hp->str_off, b); - - for (len = hp->str_len; len != 0; len -= n) { - if (buf == sp->str_bufs[b] + sp->str_bufsz) - buf = sp->str_bufs[++b]; - - resid = sp->str_bufs[b] + sp->str_bufsz - buf; - n = MIN(resid, len); - - (void) printf("%.*s", (int)n, buf); - buf += n; - } - - (void) printf("\"\n"); - } - } -} |