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- /*
- * @(#)jre.c 1.4 97/05/19 David Connelly
- *
- * Copyright (c) 1997 Sun Microsystems, Inc. All Rights Reserved.
- *
- * Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
- * modify and redistribute this software in source and binary code form,
- * provided that i) this copyright notice and license appear on all copies of
- * the software; and ii) Licensee does not utilize the software in a manner
- * which is disparaging to Sun.
- *
- * This software is provided "AS IS," without a warranty of any kind. ALL
- * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
- * IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
- * NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
- * LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
- * OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
- * LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
- * INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
- * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
- * OR INABILITY TO USE SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGES.
- *
- * This software is not designed or intended for use in on-line control of
- * aircraft, air traffic, aircraft navigation or aircraft communications; or in
- * the design, construction, operation or maintenance of any nuclear
- * facility. Licensee represents and warrants that it will not use or
- * redistribute the Software for such purposes.
- */
-
- /*
- * Portable JRE Support functions.
- */
-
- #include <string.h>
- #include <stdlib.h>
- #include <jni.h>
- #include "jre.h"
-
- /*
- * Exits the runtime with the specified error message.
- */
- void
- JRE_FatalError(JNIEnv *env, const char *msg)
- {
- if ((*env)->ExceptionOccurred(env)) {
- (*env)->ExceptionDescribe(env);
- }
- (*env)->FatalError(env, msg);
- }
-
- /*
- * Parses a runtime version string. Returns 0 if the successful, otherwise
- * returns -1 if the format of the version string was invalid.
- */
- jint
- JRE_ParseVersion(const char *ver, char **majorp, char **minorp, char **microp)
- {
- int n1 = 0, n2 = 0, n3 = 0;
-
- sscanf(ver, "%*[0-9]%n.%*[0-9]%n.%*[0-9a-zA-Z]%n", &n1, &n2, &n3);
- if (n1 == 0 || n2 == 0) {
- return -1;
- }
- if (n3 != 0) {
- if (n3 != strlen(ver)) {
- return -1;
- }
- } else if (n2 != strlen(ver)) {
- return -1;
- }
- *majorp = JRE_Malloc(n1 + 1);
- strncpy(*majorp, ver, n1);
- *minorp = JRE_Malloc(n2 - n1);
- strncpy(*minorp, ver + n1 + 1, n2 - n1 - 1);
- if (n3 != 0) {
- *microp = JRE_Malloc(n3 - n2);
- strncpy(*microp, ver + n2 + 1, n3 - n2 - 1);
- }
- return 0;
- }
-
- /*
- * Creates a version number string from the specified major, minor, and
- * micro version numbers.
- */
- char *
- JRE_MakeVersion(const char *major, const char *minor, const char *micro)
- {
- char *ver = 0;
-
- if (major != 0 && minor != 0) {
- int len = strlen(major) + strlen(minor);
- if (micro != 0) {
- ver = JRE_Malloc(len + strlen(micro) + 3);
- sprintf(ver, "%s.%s.%s", major, minor, micro);
- } else {
- ver = JRE_Malloc(len + 2);
- sprintf(ver, "%s.%s", major, minor);
- }
- }
- return ver;
- }
-
- /*
- * Allocate memory or die.
- */
- void *
- JRE_Malloc(size_t size)
- {
- void *p = malloc(size);
- if (p == 0) {
- perror("malloc");
- exit(1);
- }
- return p;
- }
-