| /*
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| * Copyright (C) 2012 The Android Open Source Project
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| *
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| * Licensed under the Apache License, Version 2.0 (the "License");
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| * you may not use this file except in compliance with the License.
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| * You may obtain a copy of the License at
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| *
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| * http://www.apache.org/licenses/LICENSE-2.0
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| *
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| * Unless required by applicable law or agreed to in writing, software
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| * distributed under the License is distributed on an "AS IS" BASIS,
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| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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| * See the License for the specific language governing permissions and
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| * limitations under the License.
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| */
|
|
|
| /*
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| * "find_java.exe", for Windows only.
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| * Tries to find a Java binary in a variety of places and prints the
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| * first one found on STDOUT and returns 0.
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| *
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| * If not found, returns error 1 with no message
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| * (unless ANDROID_SDKMAN_DEBUG or -d if set, in which case there's a message on STDERR).
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| *
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| * Implementation details:
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| * - We don't have access to ATL or MFC.
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| * - We don't want to pull in things like STL.
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| * - No Unicode/MBCS support for now.
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| *
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| * TODO for later version:
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| * - provide an env variable to let users override which version is being used.
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| * - if there's more than one java.exe found, enumerate them all.
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| * - and in that case take the one with the highest Java version number.
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| * - since that operation is expensive, do it only once and cache the result
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| * in a temp file. If the temp file is not found or the java binary no
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| * longer exists, re-run the enumaration.
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| */
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|
|
| #ifdef _WIN32
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|
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| #include "utils.h"
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| #include "find_java.h"
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| #include <io.h>
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| #include <fcntl.h>
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|
|
| static int showHelpMessage() {
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| printf(
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| "Outputs the path of the first Java.exe found on the local system.\n"
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| "Returns code 0 when found, 1 when not found.\n"
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| "Options:\n"
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| "-h / -help : This help.\n"
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| "-t / -test : Internal test.\n"
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| "-e / -error : Print an error message to the console if Java.exe isn't found.\n"
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| "-j / -jdk : Only returns java.exe found in a JDK.\n"
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| "-s / -short : Print path in short DOS form.\n"
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| "-p / -path `dir` : A custom path to search first. Pass in JDK base dir if -j is set.\n"
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| "-w / -javaw : Search a matching javaw.exe; defaults to java.exe if not found.\n"
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| "-m / -minv # : Pass in a minimum version to use (default: 1.6).\n"
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| "-v / -version: Only prints the Java version found.\n"
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| );
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| return 2;
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| }
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|
|
| static void printError(const char *message) {
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|
|
| CString error; |
| error.setLastWin32Error(message); |
| printf(error.cstr()); |
| }
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|
|
| static void testFindJava(bool isJdk, int minVersion) {
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|
|
| CPath javaPath("<not found>");
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| int v = findJavaInEnvPath(&javaPath, isJdk, minVersion);
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| printf(" findJavaInEnvPath: [%d] %s\n", v, javaPath.cstr());
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|
|
| javaPath.set("<not found>");
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| v = findJavaInRegistry(&javaPath, isJdk, minVersion);
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| printf(" findJavaInRegistry [%d] %s\n", v, javaPath.cstr());
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|
|
| javaPath.set("<not found>");
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| v = findJavaInProgramFiles(&javaPath, isJdk, minVersion);
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| printf(" findJavaInProgramFiles [%d] %s\n", v, javaPath.cstr());
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| }
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|
|
| static void testFindJava(int minVersion) {
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|
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| printf("Searching for version %d.%d or newer...\n", JAVA_MAJOR(minVersion),
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| JAVA_MINOR(minVersion));
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|
|
| printf("\n");
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| printf("Searching for any java.exe:\n");
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| testFindJava(false, minVersion);
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|
|
| printf("\n");
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| printf("Searching for java.exe within a JDK:\n");
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| testFindJava(true, minVersion);
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| }
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|
|
| // Returns 0 on failure or a java version on success.
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| int parseMinVersionArg(char* arg) {
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|
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| int versionMajor = -1;
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| int versionMinor = -1;
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| if (sscanf(arg, "%d.%d", &versionMajor, &versionMinor) != 2) {
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| // -m arg is malformatted
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| return 0;
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| }
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| return TO_JAVA_VERSION(versionMajor, versionMinor);
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| }
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|
|
| int main(int argc, char* argv[]) {
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|
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| gIsConsole = true; // tell utils to to print errors to stderr
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| gIsDebug = (getenv("ANDROID_SDKMAN_DEBUG") != NULL);
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| bool doShortPath = false;
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| bool doVersion = false;
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| bool doJavaW = false;
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| bool isJdk = false;
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| bool shouldPrintError = false;
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| int minVersion = MIN_JAVA_VERSION;
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| const char *customPathStr = NULL;
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|
|
| for (int i = 1; i < argc; i++) {
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| if (strncmp(argv[i], "-t", 2) == 0) {
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| testFindJava(minVersion);
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| return 0;
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|
|
| } else if (strncmp(argv[i], "-j", 2) == 0) {
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| isJdk = true;
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|
|
| } else if (strncmp(argv[i], "-e", 2) == 0) {
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| shouldPrintError = true;
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|
|
| } else if (strncmp(argv[i], "-p", 2) == 0) {
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| i++;
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| if (i == argc) {
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| return showHelpMessage();
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| }
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| customPathStr = argv[i];
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| } else if (strncmp(argv[i], "-d", 2) == 0) {
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| gIsDebug = true;
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|
|
| } else if (strncmp(argv[i], "-s", 2) == 0) {
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| doShortPath = true;
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|
|
| } else if (strncmp(argv[i], "-v", 2) == 0) {
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| doVersion = true;
|
|
|
| } else if (strncmp(argv[i], "-m", 2) == 0) {
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| i++;
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| if (i == argc ||
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| ((minVersion = parseMinVersionArg(argv[i])) == 0)) {
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| return showHelpMessage();
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| }
|
| }
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| else if (strcmp(argv[i], "-w") == 0 || strcmp(argv[i], "-javaw") == 0) {
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| doJavaW = true;
|
|
|
| }
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| else {
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| return showHelpMessage();
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| }
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| }
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|
|
| // Find the first suitable version of Java we can use.
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| CPath javaPath;
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|
|
| int version = 0;
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| if (customPathStr != NULL) {
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| CPath customPath(customPathStr);
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| version = findJavaInPath(customPath, &javaPath, isJdk, minVersion);
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| }
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| if (version == 0) {
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| version = findJavaInEnvPath(&javaPath, isJdk, minVersion);
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| }
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| if (version == 0) {
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| version = findJavaInRegistry(&javaPath, isJdk, minVersion);
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| }
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| if (version == 0) {
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| version = findJavaInProgramFiles(&javaPath, isJdk, minVersion);
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| }
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|
|
| if (version == 0) {
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| CString s; |
| s.setf("Failed to find Java %d.%d (or newer) on your system. ", JAVA_MAJOR(minVersion), |
| JAVA_MINOR(minVersion)); |
|
|
| if (gIsDebug) {
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| fprintf(stderr, s.cstr());
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| }
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|
|
| if (shouldPrintError) {
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| printError(s.cstr());
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| }
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|
|
| return 1;
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| }
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| _ASSERT(!javaPath.isEmpty());
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|
|
| if (doShortPath) {
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| if (!javaPath.toShortPath(&javaPath)) {
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| CString s; |
| s.setf("Failed to convert path (%s) to a short DOS path. ", javaPath.cstr()); |
| fprintf(stderr, s.cstr());
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|
|
| if (shouldPrintError) {
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| printError(s.cstr());
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| }
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|
|
| return 1;
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| }
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| }
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|
|
| if (doVersion) {
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| // Print version found. We already have the version as an integer
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| // so we don't need to run java -version a second time.
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| printf("%d.%d", JAVA_MAJOR(version), JAVA_MINOR(version));
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| return 0;
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| }
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|
|
| if (doJavaW) {
|
| // Try to find a javaw.exe instead of java.exe at the same location.
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| CPath javawPath(javaPath);
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| javawPath.replaceName("java.exe", "javaw.exe");
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| // Only accept it if we can actually find the exec
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| if (javawPath.fileExists()) {
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| javaPath.set(javawPath.cstr());
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| }
|
| }
|
|
|
| // Print java.exe path found
|
| printf(javaPath.cstr());
|
| return 0;
|
| }
|
|
|
| #endif /* _WIN32 */
|