/* Copyright 2000-2004 The Apache Software Foundation
		 *
		 * 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.
		 */
		
		#define APR_WANT_STRFUNC
		#include "apr_want.h"
		#include "apr.h"
		#include "apr_private.h"
		#include "apr_env.h"
		
		#if APR_HAVE_UNISTD_H
		#include <unistd.h>
		#endif
		#if APR_HAVE_STDLIB_H
		#include <stdlib.h>
		#endif
		
		APR_DECLARE(apr_status_t) apr_env_get(char **value,
		                                      const char *envvar,
		                                      apr_pool_t *pool)
           8    {
		#ifdef HAVE_GETENV
		
           8        char *val = getenv(envvar);
           8        if (!val)
           7            return APR_ENOENT;
           1        *value = val;
           1        return APR_SUCCESS;
		
		#else
		    return APR_ENOTIMPL;
		#endif
		}
		
		
		APR_DECLARE(apr_status_t) apr_env_set(const char *envvar,
		                                      const char *value,
		                                      apr_pool_t *pool)
           1    {
		#if defined(HAVE_SETENV)
		
           1        if (0 > setenv(envvar, value, 1))
      ######            return APR_ENOMEM;
           1        return APR_SUCCESS;
		
		#elif defined(HAVE_PUTENV)
		
		    apr_size_t elen = strlen(envvar);
		    apr_size_t vlen = strlen(value);
		    char *env = apr_palloc(pool, elen + vlen + 2);
		    char *p = env + elen;
		
		    memcpy(env, envvar, elen);
		    *p++ = '=';
		    memcpy(p, value, vlen);
		    p[vlen] = '\0';
		
		    if (0 > putenv(env))
		        return APR_ENOMEM;
		    return APR_SUCCESS;
		
		#else
		    return APR_ENOTIMPL;
		#endif
		}
		
		
		APR_DECLARE(apr_status_t) apr_env_delete(const char *envvar, apr_pool_t *pool)
           1    {
		#ifdef HAVE_UNSETENV
		
           1        unsetenv(envvar);
           1        return APR_SUCCESS;
		
		#else
		    /* hint: some platforms allow envvars to be unset via
		     *       putenv("varname")...  that isn't Single Unix spec,
		     *       but if your platform doesn't have unsetenv() it is
		     *       worth investigating and potentially adding a
		     *       configure check to decide when to use that form of
		     *       putenv() here
		     */
		    return APR_ENOTIMPL;
		#endif
		}