129 lines
3.6 KiB
C
129 lines
3.6 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Sun Microsystems, Inc.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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* Portable JRE support functions - pared this down to minimal set I need
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*/
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#include <string.h>
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#include <stdlib.h>
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#include <jni.h>
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#include "jre.h"
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/*
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* Exits the runtime with the specified error message.
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*/
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void
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JRE_FatalError(JNIEnv *env, const char *msg)
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{
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if ((*env)->ExceptionOccurred(env)) {
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(*env)->ExceptionDescribe(env);
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}
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(*env)->FatalError(env, msg);
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}
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/*
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* Parses a runtime version string. Returns 0 if the successful, otherwise
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* returns -1 if the format of the version string was invalid.
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*/
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jint
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JRE_ParseVersion(const char *ver, char **majorp, char **minorp, char **microp)
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{
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int n1 = 0, n2 = 0, n3 = 0;
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sscanf(ver, "%*[0-9]%n.%*[0-9]%n.%*[0-9a-zA-Z]%n", &n1, &n2, &n3);
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if (n1 == 0 || n2 == 0) {
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return -1;
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}
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if (n3 != 0) {
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if (n3 != (int)strlen(ver)) {
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return -1;
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}
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} else if (n2 != (int)strlen(ver)) {
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return -1;
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}
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*majorp = JRE_Malloc(n1 + 1);
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strncpy(*majorp, ver, n1);
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(*majorp)[n1] = 0;
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*minorp = JRE_Malloc(n2 - n1);
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strncpy(*minorp, ver + n1 + 1, n2 - n1 - 1);
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(*minorp)[n2 - n1 - 1] = 0;
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if (n3 != 0) {
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*microp = JRE_Malloc(n3 - n2);
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strncpy(*microp, ver + n2 + 1, n3 - n2 - 1);
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(*microp)[n3 - n2 - 1] = 0;
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}
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return 0;
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}
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/*
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* Creates a version number string from the specified major, minor, and
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* micro version numbers.
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*/
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char *
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JRE_MakeVersion(const char *major, const char *minor, const char *micro)
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{
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char *ver = 0;
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if (major != 0 && minor != 0) {
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int len = strlen(major) + strlen(minor);
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if (micro != 0) {
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ver = JRE_Malloc(len + strlen(micro) + 3);
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sprintf(ver, "%s.%s.%s", major, minor, micro);
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} else {
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ver = JRE_Malloc(len + 2);
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sprintf(ver, "%s.%s", major, minor);
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}
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}
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return ver;
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}
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/*
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* Allocate memory or die.
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*/
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void *
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JRE_Malloc(size_t size)
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{
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void *p = malloc(size);
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if (p == 0) {
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perror("malloc");
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exit(1);
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}
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return p;
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}
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