buckets/apr_buckets_heap.c

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 */

#include "apr_buckets.h"
#include <stdlib.h>
#if APR_HAVE_STRINGS_H
#include <strings.h>
#endif

static apr_status_t heap_read(apr_bucket *b, const char **str, 
			      apr_size_t *len, apr_read_type_e block)
{
    apr_bucket_shared *s = b->data;
    apr_bucket_heap *h = s->data;

    *str = h->base + s->start;
    *len = s->end - s->start;
    return APR_SUCCESS;
}

static void heap_destroy(void *data)
{
    apr_bucket_heap *h;

    h = apr_bucket_shared_destroy(data);
    if (h == NULL) {
	return;
    }
    free(h->base);
    free(h);
}

APU_DECLARE(apr_bucket *) apr_bucket_heap_make(apr_bucket *b,
		const char *buf, apr_size_t length, int copy, apr_size_t *w)
{
    apr_bucket_heap *h;

    h = malloc(sizeof(*h));
    if (h == NULL) {
	return NULL;
    }

    if (copy) {
	h->alloc_len = length;
	h->base = malloc(h->alloc_len);
	if (h->base == NULL) {
	    free(h);
	    return NULL;
	}
	memcpy(h->base, buf, length);
    }
    else {
	/* XXX: we lose the const qualifier here which indicates
         * there's something screwy with the API...
	 */
	h->base = (char *) buf;
	h->alloc_len = length;
    }

    b = apr_bucket_shared_make(b, h, 0, length);
    if (b == NULL) {
	if (copy) {
	    free(h->base);
	}
	free(h);
	return NULL;
    }

    b->type = &apr_bucket_type_heap;

    if (w)
        *w = length;

    return b;
}

APU_DECLARE(apr_bucket *) apr_bucket_heap_create(
		const char *buf, apr_size_t length, int copy, apr_size_t *w)
{
    apr_bucket_do_create(apr_bucket_heap_make(b, buf, length, copy, w));
}

APU_DECLARE_DATA const apr_bucket_type_t apr_bucket_type_heap = {
    "HEAP", 5,
    heap_destroy,
    heap_read,
    apr_bucket_setaside_notimpl,
    apr_bucket_shared_split,
    apr_bucket_shared_copy
};