/*

 * Copyright (c) 2005, 2011, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

#include <stdlib.h>

#include <string.h>

#include <ctype.h>

#include <assert.h>

#include "jvm.h"

#include "jdk_util.h"

#ifndef JDK_UPDATE_VERSION

   /* if not defined set to 00 */

   #define JDK_UPDATE_VERSION "00"

#endif

JNIEXPORT void

JDK_GetVersionInfo0(jdk_version_info* info, size_t info_size) {

    /* These JDK_* macros are set at Makefile or the command line */

    const unsigned int jdk_major_version =

        (unsigned int) atoi(JDK_MAJOR_VERSION);

    const unsigned int jdk_minor_version =

        (unsigned int) atoi(JDK_MINOR_VERSION);

    const unsigned int jdk_micro_version =

        (unsigned int) atoi(JDK_MICRO_VERSION);

    const char* jdk_build_string = JDK_BUILD_NUMBER;

    char build_number[4];

    unsigned int jdk_build_number = 0;

    const char* jdk_update_string = JDK_UPDATE_VERSION;

    unsigned int jdk_update_version = 0;

    char update_ver[3];

    char jdk_special_version = '\0';

    /* If the JDK_BUILD_NUMBER is of format bXX and XX is an integer

     * XX is the jdk_build_number.

     */

    int len = strlen(jdk_build_string);

    if (jdk_build_string[0] == 'b' && len >= 2) {

        int i = 0;

        for (i = 1; i < len; i++) {

            if (isdigit(jdk_build_string[i])) {

                build_number[i-1] = jdk_build_string[i];

            } else {

                // invalid build number

                i = -1;

                break;

            }

        }

        if (i == len) {

            build_number[len-1] = '\0';

            jdk_build_number = (unsigned int) atoi(build_number) ;

        }

    }

    assert(jdk_build_number >= 0 && jdk_build_number <= 255);

    if (strlen(jdk_update_string) == 2 || strlen(jdk_update_string) == 3) {

        if (isdigit(jdk_update_string[0]) && isdigit(jdk_update_string[1])) {

            update_ver[0] = jdk_update_string[0];

            update_ver[1] = jdk_update_string[1];

            update_ver[2] = '\0';

            jdk_update_version = (unsigned int) atoi(update_ver);

            if (strlen(jdk_update_string) == 3) {

                jdk_special_version = jdk_update_string[2];

            }

        }

    }

    memset(info, 0, info_size);

    info->jdk_version = ((jdk_major_version & 0xFF) << 24) |

                        ((jdk_minor_version & 0xFF) << 16) |

                        ((jdk_micro_version & 0xFF) << 8)  |

                        (jdk_build_number & 0xFF);

    info->update_version = jdk_update_version;

    info->special_update_version = (unsigned int) jdk_special_version;

    info->thread_park_blocker = 1;

    // Advertise presence of sun.misc.PostVMInitHook:

    // future optimization: detect if this is enabled.

    info->post_vm_init_hook_enabled = 1;

    info->pending_list_uses_discovered_field = 1;

}