| 1 | /*
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| 2 | * Copyright (c) 2002 IBM Corp and others. All rights reserved.
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| 3 | * This file is made available under the terms of the Common Public License v1.0
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| 4 | * which accompanies this distribution, and is available at
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| 5 | * http://www.eclipse.org/legal/cpl-v10.html
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| 6 | *
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| 7 | * Contributors:
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| 8 | * Kevin Cornell (Rational Software Corporation)
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| 9 | */
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| 10 |
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| 11 |
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| 12 | /* Eclipse Launcher Utility Methods */
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| 13 |
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| 14 | #include <string.h>
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| 15 | #include <stdlib.h>
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| 16 | #include <stdio.h>
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| 17 |
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| 18 | #include "eclipseUtil.h"
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| 19 | #include "eclipseOS.h"
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| 20 |
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| 21 | #define MAX_LINE_LENGTH 256
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| 22 |
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| 23 | #ifdef _WIN32
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| 24 | #define strcasecmp _stricmp
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| 25 | #endif
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| 26 |
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| 27 |
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| 28 | /* Is the given VM J9 */
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| 29 | int isJ9VM( char* vm )
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| 30 | {
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| 31 | char *ch = strrchr( vm, (int)dirSeparator );
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| 32 | if (ch == NULL)
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| 33 | ch = vm;
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| 34 | else
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| 35 | ch++;
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| 36 | return (stricmp( ch, "j9" ) == 0);
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| 37 | }
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| 38 |
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| 39 |
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| 40 | #ifdef AIX
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| 41 |
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| 42 | #include <sys/types.h>
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| 43 | #include <time.h>
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| 44 |
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| 45 | /* Return the JVM version in the format x.x.x
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| 46 | */
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| 47 | char* getVMVersion( char *vmPath )
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| 48 | {
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| 49 | char cmd[MAX_LINE_LENGTH];
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| 50 | char lineString[MAX_LINE_LENGTH];
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| 51 | char* firstChar;
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| 52 | char fileName[MAX_LINE_LENGTH];
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| 53 | time_t curTime;
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| 54 | FILE* fp;
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| 55 | int numChars = 0;
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| 56 | char* version = NULL;
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| 57 |
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| 58 | /* Define a unique filename for the java output. */
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| 59 | (void) time(&curTime);
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| 60 | (void) sprintf(fileName, "/tmp/tmp%ld.txt", curTime);
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| 61 |
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| 62 | /* Write java -version output to a temp file */
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| 63 | (void) sprintf(cmd,"%s -version 2> %s", vmPath, fileName);
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| 64 | (void) system(cmd);
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| 65 |
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| 66 | fp = fopen(fileName, "r");
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| 67 | if (fp != NULL)
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| 68 | {
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| 69 | /* Read java -version output from a temp file */
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| 70 | if (fgets(lineString, MAX_LINE_LENGTH, fp) == NULL)
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| 71 | lineString[0] = '\0';
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| 72 | fclose(fp);
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| 73 | unlink(fileName);
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| 74 |
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| 75 | /* Extract version number */
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| 76 | firstChar = (char *) (strchr(lineString, '"') + 1);
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| 77 | if (firstChar != NULL)
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| 78 | numChars = (int) (strrchr(lineString, '"') - firstChar);
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| 79 |
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| 80 | /* Allocate a buffer and copy the version string into it. */
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| 81 | if (numChars > 0)
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| 82 | {
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| 83 | version = malloc( numChars + 1 );
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| 84 | strncpy(version, firstChar, numChars);
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| 85 | version[numChars] = '\0';
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| 86 | }
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| 87 | }
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| 88 |
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| 89 | return version;
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| 90 | }
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| 91 |
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| 92 | /* Compare JVM Versions of the form "x.x.x..."
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| 93 | *
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| 94 | * Returns -1 if ver1 < ver2
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| 95 | * Returns 0 if ver1 = ver2
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| 96 | * Returns 1 if ver1 > ver2
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| 97 | */
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| 98 | int versionCmp(char *ver1, char *ver2)
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| 99 | {
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| 100 | char* dot1;
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| 101 | char* dot2;
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| 102 | int num1;
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| 103 | int num2;
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| 104 |
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| 105 | dot1 = strchr(ver1, '.');
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| 106 | dot2 = strchr(ver2, '.');
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| 107 |
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| 108 | num1 = atoi(ver1);
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| 109 | num2 = atoi(ver2);
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| 110 |
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| 111 | if (num1 > num2)
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| 112 | return 1;
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| 113 |
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| 114 | if (num1 < num2)
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| 115 | return -1;
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| 116 |
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| 117 | if (dot1 && !dot2) /* x.y > x */
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| 118 | return 1;
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| 119 |
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| 120 | if (!dot1 && dot2) /* x < x.y */
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| 121 | return -1;
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| 122 |
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| 123 | if (!dot1 && !dot2) /* x == x */
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| 124 | return 0;
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| 125 |
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| 126 | return versionCmp((char*)(dot1 + 1), (char*)(dot2 + 1) );
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| 127 | }
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| 128 | #endif /* AIX */
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