modules/dav/main/liveprop.c

/* ====================================================================
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2000 The Apache Software Foundation.  All rights
 * reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 * 1. Redistributions of source code must retain the above copyright
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 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
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 *
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 */

#include "apr_pools.h"
#include "apr_hash.h"
#include "apr_errno.h"

#include "ap_hooks.h"   /* ### for ap_global_hook_pool */
#include "util_xml.h"   /* for ap_text_header */

#include "mod_dav.h"


static ap_hash_t *dav_liveprop_uris = NULL;
static int dav_liveprop_count = 0;


static ap_status_t dav_cleanup_liveprops(void *ctx)
{
    dav_liveprop_uris = NULL;
    dav_liveprop_count = 0;
    return APR_SUCCESS;
}

void dav_register_liveprop_namespace(ap_pool_t *p, const char *uri)
{
    int value;

    /* ### ignore the pool; it is NULL right now */
    p = ap_global_hook_pool;

    if (dav_liveprop_uris == NULL) {
        dav_liveprop_uris = ap_make_hash(p);
        ap_register_cleanup(p, NULL, dav_cleanup_liveprops, ap_null_cleanup);
    }

    value = (int)ap_hash_get(dav_liveprop_uris, uri, 0);
    if (value != 0) {
        /* already registered */
        return;
    }

    /* start at 1, and count up */
    ap_hash_set(dav_liveprop_uris, uri, 0, (void *)++dav_liveprop_count);
}

int dav_get_liveprop_ns_index(const char *uri)
{
    return (int)ap_hash_get(dav_liveprop_uris, uri, 0);
}

int dav_get_liveprop_ns_count(void)
{
    return dav_liveprop_count;
}

void dav_add_all_liveprop_xmlns(ap_pool_t *p, ap_text_header *phdr)
{
    ap_hash_index_t *idx = ap_hash_first(dav_liveprop_uris);

    for ( ; idx != NULL; idx = ap_hash_next(idx) ) {
        const void *key;
        void *val;
        const char *s;

        ap_hash_this(idx, &key, NULL, &val);

        s = ap_psprintf(p, " xmlns:lp%d=\"%s\"", (int)val, key);
        ap_text_append(p, phdr, s);
    }
}