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/* Copyright 2002-2004 Justin Erenkrantz and Greg Stein
*
* Licensed 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 <apr_pools.h>
#include "serf.h"
#include "serf_bucket_util.h"
typedef struct {
const char *original;
const char *current;
apr_size_t remaining;
serf_simple_freefunc_t freefunc;
void *baton;
} simple_context_t;
static void free_copied_data(void *baton, const char *data)
{
serf_bucket_mem_free(baton, (char*)data);
}
serf_bucket_t *serf_bucket_simple_create(
const char *data,
apr_size_t len,
serf_simple_freefunc_t freefunc,
void *freefunc_baton,
serf_bucket_alloc_t *allocator)
{
simple_context_t *ctx;
ctx = serf_bucket_mem_alloc(allocator, sizeof(*ctx));
ctx->original = ctx->current = data;
ctx->remaining = len;
ctx->freefunc = freefunc;
ctx->baton = freefunc_baton;
return serf_bucket_create(&serf_bucket_type_simple, allocator, ctx);
}
serf_bucket_t *serf_bucket_simple_copy_create(
const char *data, apr_size_t len,
serf_bucket_alloc_t *allocator)
{
simple_context_t *ctx;
ctx = serf_bucket_mem_alloc(allocator, sizeof(*ctx));
ctx->original = ctx->current = serf_bucket_mem_alloc(allocator, len);
memcpy((char*)ctx->original, data, len);
ctx->remaining = len;
ctx->freefunc = free_copied_data;
ctx->baton = allocator;
return serf_bucket_create(&serf_bucket_type_simple, allocator, ctx);
}
static apr_status_t serf_simple_read(serf_bucket_t *bucket,
apr_size_t requested,
const char **data, apr_size_t *len)
{
simple_context_t *ctx = bucket->data;
if (requested == SERF_READ_ALL_AVAIL || requested > ctx->remaining)
requested = ctx->remaining;
*data = ctx->current;
*len = requested;
ctx->current += requested;
ctx->remaining -= requested;
return ctx->remaining ? APR_SUCCESS : APR_EOF;
}
static apr_status_t serf_simple_readline(serf_bucket_t *bucket,
int acceptable, int *found,
const char **data, apr_size_t *len)
{
simple_context_t *ctx = bucket->data;
/* Returned data will be from current position. */
*data = ctx->current;
serf_util_readline(&ctx->current, &ctx->remaining, acceptable, found);
/* See how much ctx->current moved forward. */
*len = ctx->current - *data;
return ctx->remaining ? APR_SUCCESS : APR_EOF;
}
static apr_status_t serf_simple_peek(serf_bucket_t *bucket,
const char **data,
apr_size_t *len)
{
simple_context_t *ctx = bucket->data;
/* return whatever we have left */
*data = ctx->current;
*len = ctx->remaining;
/* we returned everything this bucket will ever hold */
return APR_EOF;
}
static void serf_simple_destroy(serf_bucket_t *bucket)
{
simple_context_t *ctx = bucket->data;
if (ctx->freefunc)
(*ctx->freefunc)(ctx->baton, ctx->original);
serf_default_destroy_and_data(bucket);
}
const serf_bucket_type_t serf_bucket_type_simple = {
"SIMPLE",
serf_simple_read,
serf_simple_readline,
serf_default_read_iovec,
serf_default_read_for_sendfile,
serf_default_read_bucket,
serf_simple_peek,
serf_simple_destroy,
};
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