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/* id.c : operations on node-revision IDs
*
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
* ====================================================================
*/
#include <string.h>
#include <stdlib.h>
#include "id.h"
#include "../libsvn_fs/fs-loader.h"
typedef struct id_private_t {
const char *node_id;
const char *copy_id;
const char *txn_id;
} id_private_t;
/* Accessing ID Pieces. */
const char *
svn_fs_base__id_node_id(const svn_fs_id_t *id)
{
id_private_t *pvt = id->fsap_data;
return pvt->node_id;
}
const char *
svn_fs_base__id_copy_id(const svn_fs_id_t *id)
{
id_private_t *pvt = id->fsap_data;
return pvt->copy_id;
}
const char *
svn_fs_base__id_txn_id(const svn_fs_id_t *id)
{
id_private_t *pvt = id->fsap_data;
return pvt->txn_id;
}
svn_string_t *
svn_fs_base__id_unparse(const svn_fs_id_t *id,
apr_pool_t *pool)
{
id_private_t *pvt = id->fsap_data;
return svn_string_createf(pool, "%s.%s.%s",
pvt->node_id, pvt->copy_id, pvt->txn_id);
}
/*** Comparing node IDs ***/
svn_boolean_t
svn_fs_base__id_eq(const svn_fs_id_t *a,
const svn_fs_id_t *b)
{
id_private_t *pvta = a->fsap_data, *pvtb = b->fsap_data;
if (a == b)
return TRUE;
if (strcmp(pvta->node_id, pvtb->node_id) != 0)
return FALSE;
if (strcmp(pvta->copy_id, pvtb->copy_id) != 0)
return FALSE;
if (strcmp(pvta->txn_id, pvtb->txn_id) != 0)
return FALSE;
return TRUE;
}
svn_boolean_t
svn_fs_base__id_check_related(const svn_fs_id_t *a,
const svn_fs_id_t *b)
{
id_private_t *pvta = a->fsap_data, *pvtb = b->fsap_data;
if (a == b)
return TRUE;
return (strcmp(pvta->node_id, pvtb->node_id) == 0);
}
int
svn_fs_base__id_compare(const svn_fs_id_t *a,
const svn_fs_id_t *b)
{
if (svn_fs_base__id_eq(a, b))
return 0;
return (svn_fs_base__id_check_related(a, b) ? 1 : -1);
}
/* Creating ID's. */
static id_vtable_t id_vtable = {
svn_fs_base__id_unparse,
svn_fs_base__id_compare
};
svn_fs_id_t *
svn_fs_base__id_create(const char *node_id,
const char *copy_id,
const char *txn_id,
apr_pool_t *pool)
{
svn_fs_id_t *id = apr_palloc(pool, sizeof(*id));
id_private_t *pvt = apr_palloc(pool, sizeof(*pvt));
pvt->node_id = apr_pstrdup(pool, node_id);
pvt->copy_id = apr_pstrdup(pool, copy_id);
pvt->txn_id = apr_pstrdup(pool, txn_id);
id->vtable = &id_vtable;
id->fsap_data = pvt;
return id;
}
svn_fs_id_t *
svn_fs_base__id_copy(const svn_fs_id_t *id, apr_pool_t *pool)
{
svn_fs_id_t *new_id = apr_palloc(pool, sizeof(*new_id));
id_private_t *new_pvt = apr_palloc(pool, sizeof(*new_pvt));
id_private_t *pvt = id->fsap_data;
new_pvt->node_id = apr_pstrdup(pool, pvt->node_id);
new_pvt->copy_id = apr_pstrdup(pool, pvt->copy_id);
new_pvt->txn_id = apr_pstrdup(pool, pvt->txn_id);
new_id->vtable = &id_vtable;
new_id->fsap_data = new_pvt;
return new_id;
}
svn_fs_id_t *
svn_fs_base__id_parse(const char *data,
apr_size_t len,
apr_pool_t *pool)
{
svn_fs_id_t *id;
id_private_t *pvt;
char *data_copy, *str;
/* Dup the ID data into POOL. Our returned ID will have references
into this memory. */
data_copy = apr_pstrmemdup(pool, data, len);
/* Alloc a new svn_fs_id_t structure. */
id = apr_palloc(pool, sizeof(*id));
pvt = apr_palloc(pool, sizeof(*pvt));
id->vtable = &id_vtable;
id->fsap_data = pvt;
/* Now, we basically just need to "split" this data on `.'
characters. We will use svn_cstring_tokenize, which will put
terminators where each of the '.'s used to be. Then our new
id field will reference string locations inside our duplicate
string.*/
/* Node Id */
str = svn_cstring_tokenize(".", &data_copy);
if (str == NULL)
return NULL;
pvt->node_id = str;
/* Copy Id */
str = svn_cstring_tokenize(".", &data_copy);
if (str == NULL)
return NULL;
pvt->copy_id = str;
/* Txn Id */
str = svn_cstring_tokenize(".", &data_copy);
if (str == NULL)
return NULL;
pvt->txn_id = str;
return id;
}
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