From 2d303a7f0a6076bbf5739bae4f0fa443d0da5203 Mon Sep 17 00:00:00 2001
From: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
Date: Sun, 24 Nov 2019 17:26:33 +0100
Subject: Cleanup: completely move str_table into libsquashfs internals

Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
---
 lib/util/str_table.c | 174 ---------------------------------------------------
 1 file changed, 174 deletions(-)
 delete mode 100644 lib/util/str_table.c

(limited to 'lib/util/str_table.c')

diff --git a/lib/util/str_table.c b/lib/util/str_table.c
deleted file mode 100644
index 513b243..0000000
--- a/lib/util/str_table.c
+++ /dev/null
@@ -1,174 +0,0 @@
-/* SPDX-License-Identifier: LGPL-3.0-or-later */
-/*
- * str_table.c
- *
- * Copyright (C) 2019 David Oberhollenzer <goliath@infraroot.at>
- */
-#include "config.h"
-
-#include <stdint.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "sqfs/error.h"
-#include "util/str_table.h"
-#include "util/util.h"
-
-/* R5 hash function (borrowed from reiserfs) */
-static sqfs_u32 strhash(const char *s)
-{
-	const signed char *str = (const signed char *)s;
-	sqfs_u32 a = 0;
-
-	while (*str != '\0') {
-		a += *str << 4;
-		a += *str >> 4;
-		a *= 11;
-		str++;
-	}
-
-	return a;
-}
-
-static int strings_grow(str_table_t *table)
-{
-	size_t newsz;
-	void *new;
-
-	if (table->num_strings < table->max_strings)
-		return 0;
-
-	newsz = table->max_strings ? (table->max_strings * 2) : 16;
-	new = realloc(table->strings, sizeof(table->strings[0]) * newsz);
-
-	if (new == NULL)
-		return SQFS_ERROR_ALLOC;
-
-	table->strings = new;
-	table->max_strings = newsz;
-	return 0;
-}
-
-int str_table_init(str_table_t *table, size_t size)
-{
-	memset(table, 0, sizeof(*table));
-
-	table->buckets = alloc_array(size, sizeof(table->buckets[0]));
-	table->num_buckets = size;
-
-	if (table->buckets == NULL)
-		return SQFS_ERROR_ALLOC;
-
-	return 0;
-}
-
-void str_table_cleanup(str_table_t *table)
-{
-	str_bucket_t *bucket;
-	size_t i;
-
-	for (i = 0; i < table->num_buckets; ++i) {
-		while (table->buckets[i] != NULL) {
-			bucket = table->buckets[i];
-			table->buckets[i] = bucket->next;
-
-			free(bucket->str);
-			free(bucket);
-		}
-	}
-
-	free(table->buckets);
-	free(table->strings);
-	memset(table, 0, sizeof(*table));
-}
-
-int str_table_get_index(str_table_t *table, const char *str, size_t *idx)
-{
-	str_bucket_t *bucket;
-	sqfs_u32 hash;
-	size_t index;
-	int err;
-
-	hash = strhash(str);
-	index = hash % table->num_buckets;
-	bucket = table->buckets[index];
-
-	while (bucket != NULL) {
-		if (strcmp(bucket->str, str) == 0) {
-			*idx = bucket->index;
-			return 0;
-		}
-
-		bucket = bucket->next;
-	}
-
-	err = strings_grow(table);
-	if (err)
-		return err;
-
-	bucket = calloc(1, sizeof(*bucket));
-	if (bucket == NULL)
-		goto fail_oom;
-
-	bucket->str = strdup(str);
-	if (bucket->str == NULL)
-		goto fail_oom;
-
-	bucket->index = table->num_strings;
-	table->strings[table->num_strings++] = bucket->str;
-	*idx = bucket->index;
-
-	bucket->next = table->buckets[index];
-	table->buckets[index] = bucket;
-	return 0;
-fail_oom:
-	free(bucket);
-	return SQFS_ERROR_ALLOC;
-}
-
-const char *str_table_get_string(str_table_t *table, size_t index)
-{
-	if (index >= table->num_strings)
-		return NULL;
-
-	return table->strings[index];
-}
-
-static str_bucket_t *bucket_by_index(str_table_t *table, size_t index)
-{
-	str_bucket_t *bucket = NULL;
-	sqfs_u32 hash;
-
-	if (index < table->num_strings) {
-		hash = strhash(table->strings[index]);
-		bucket = table->buckets[hash % table->num_buckets];
-
-		while (bucket != NULL && bucket->index != index)
-			bucket = bucket->next;
-	}
-
-	return bucket;
-}
-
-void str_table_add_ref(str_table_t *table, size_t index)
-{
-	str_bucket_t *bucket = bucket_by_index(table, index);
-
-	if (bucket != NULL && bucket->refcount < ~((size_t)0))
-		bucket->refcount += 1;
-}
-
-void str_table_del_ref(str_table_t *table, size_t index)
-{
-	str_bucket_t *bucket = bucket_by_index(table, index);
-
-	if (bucket != NULL && bucket->refcount > 0)
-		bucket->refcount -= 1;
-}
-
-size_t str_table_get_ref_count(str_table_t *table, size_t index)
-{
-	str_bucket_t *bucket = bucket_by_index(table, index);
-
-	return bucket != NULL ? bucket->refcount : 0;
-}
-- 
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