зеркало из https://github.com/mozilla/gecko-dev.git
139 строки
4.2 KiB
C
139 строки
4.2 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the 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 Sun Microsystems, Inc.
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* Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*
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* Copyright (c) 1997 Sun Microsystems, Inc. All Rights Reserved.
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*
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* Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
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* modify and redistribute this software in source and binary code form,
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* provided that i) this copyright notice and license appear on all copies of
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* the software; and ii) Licensee does not utilize the software in a manner
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* which is disparaging to Sun.
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*
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* This software is provided "AS IS," without a warranty of any kind. ALL
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* EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
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* IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
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* NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
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* LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
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* OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
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* LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
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* INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
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* CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
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* OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*
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* This software is not designed or intended for use in on-line control of
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* aircraft, air traffic, aircraft navigation or aircraft communications; or in
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* the design, construction, operation or maintenance of any nuclear
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* facility. Licensee represents and warrants that it will not use or
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* redistribute the Software for such purposes.
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*/
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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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