diff options
author | Linnea Gräf <nea@nea.moe> | 2024-06-20 02:48:38 +0200 |
---|---|---|
committer | Linnea Gräf <nea@nea.moe> | 2024-06-20 02:48:38 +0200 |
commit | 5593488744dc5aa994b5ab2806ed56d7bc627368 (patch) | |
tree | 9d8701474adbd0ce3d51c3f2b92e7ed5724b02a7 /src/main/java/moe/nea/modernjava/launch/relaunch/JavaScanner.java | |
parent | cb08a83e7a0f82f2459da7cb93b8c327b29d9838 (diff) | |
download | ModernJavaLauncher-5593488744dc5aa994b5ab2806ed56d7bc627368.tar.gz ModernJavaLauncher-5593488744dc5aa994b5ab2806ed56d7bc627368.tar.bz2 ModernJavaLauncher-5593488744dc5aa994b5ab2806ed56d7bc627368.zip |
Diffstat (limited to 'src/main/java/moe/nea/modernjava/launch/relaunch/JavaScanner.java')
-rw-r--r-- | src/main/java/moe/nea/modernjava/launch/relaunch/JavaScanner.java | 248 |
1 files changed, 125 insertions, 123 deletions
diff --git a/src/main/java/moe/nea/modernjava/launch/relaunch/JavaScanner.java b/src/main/java/moe/nea/modernjava/launch/relaunch/JavaScanner.java index 0003097..e50e5d4 100644 --- a/src/main/java/moe/nea/modernjava/launch/relaunch/JavaScanner.java +++ b/src/main/java/moe/nea/modernjava/launch/relaunch/JavaScanner.java @@ -11,127 +11,129 @@ import java.util.List; public class JavaScanner { - public static final String JAVA_BINARY_PATH = "bin/java" + (SystemUtils.IS_OS_WINDOWS ? ".exe" : ""); - public static final String JAVA_COMPILER_PATH = "bin/javac" + (SystemUtils.IS_OS_WINDOWS ? ".exe" : ""); - - public boolean isJavaHome(File potential) { - if (new File(potential, JAVA_BINARY_PATH).exists()) { - return true; - } - return false; - } - - private List<LocalJavaVersion> versionList = new ArrayList<>(); - - public void scanDirectory(File file) { - scanDirectory(file, 1); - } - - public void scanDirectory(File file, int depthLimit) { - if (depthLimit < 0) return; - if (isJavaHome(file)) { - versionList.add(new LocalJavaVersion(file)); - } else { - for (File listFile : file.listFiles()) { - if (listFile.isDirectory()) { - scanDirectory(listFile, depthLimit - 1); - } - } - } - } - - public void prettyPrint() { - String s = "Fun fact these are the found Java Runtime Environments:\n"; - for (LocalJavaVersion localJavaVersion : versionList) { - s += localJavaVersion.prettyPrint(); - } - System.out.println(s); - } - - public void scanDefaultPaths() { - File home = new File(System.getProperty("user.home")); - scanDirectory(new File(home, ".sdkman/candidates/java")); - scanDirectory(new File(home, ".jdks")); - scanDirectory(new File("/usr"), 0); - String[] paths = System.getProperty(PropertyNames.JAVA_SCAN_PATH, "").split(File.pathSeparator); - for (String path : paths) { - if (!path.isEmpty()) { - scanDirectory(new File(path).getParentFile(), 3); - } - } - } - - public LocalJavaVersion findCandidate() { - LocalJavaVersion bestFit = null; - for (LocalJavaVersion localJavaVersion : versionList) { - if (localJavaVersion.isJdk() && localJavaVersion.getMajorVersion() == 16) { - bestFit = localJavaVersion; - } - } - return bestFit; - } - - public static class LocalJavaVersion { - private final File javaHome; - private String versionString; - - public LocalJavaVersion(File javaHome) { - this.javaHome = javaHome; - } - - public File getJavaHome() { - return javaHome; - } - - public File getJavaBinary() { - return new File(javaHome, JAVA_BINARY_PATH); - } - - public boolean isJdk() { - return new File(javaHome, JAVA_COMPILER_PATH).exists(); - } - - public String getVersionString() { - if (versionString == null) { - ProcessBuilder processBuilder = new ProcessBuilder(); - processBuilder.command(getJavaBinary().getAbsolutePath(), "-version"); - processBuilder.redirectInput(ProcessBuilder.Redirect.PIPE); - processBuilder.redirectOutput(ProcessBuilder.Redirect.PIPE); - processBuilder.redirectError(ProcessBuilder.Redirect.PIPE); - try { - Process process = processBuilder.start(); - process.waitFor(); - versionString = IOUtils.toString(process.getInputStream()) + IOUtils.toString(process.getErrorStream()); - } catch (Exception e) { - e.printStackTrace(); - versionString = "<invalid>"; - } - } - return versionString; - } - - public String prettyPrint() { - return javaHome.getAbsolutePath() + ":\n" - + "\tJava Binary: " + getJavaBinary().getAbsolutePath() + "\n" - + "\tMajor Version: " + getMajorVersion() + "\n" - + "\tFull Version: " + getVersion() + "\n" - + "\tIs Jdk: " + isJdk() + "\n" - ; - } - - public String getVersion() { - String v = getVersionString(); - String[] s = v.split("\""); - if (s.length < 2) return null; - return s[1]; - } - - public int getMajorVersion() { - try { - return Integer.parseInt(getVersion().split("\\.")[0]); - } catch (Exception e) { - return -1; - } - } - } + public static final String JAVA_BINARY_PATH = "bin/java" + (SystemUtils.IS_OS_WINDOWS ? ".exe" : ""); + public static final String JAVA_COMPILER_PATH = "bin/javac" + (SystemUtils.IS_OS_WINDOWS ? ".exe" : ""); + + public boolean isJavaHome(File potential) { + if (new File(potential, JAVA_BINARY_PATH).exists()) { + return true; + } + return false; + } + + private List<LocalJavaVersion> versionList = new ArrayList<>(); + + public void scanDirectory(File file) { + scanDirectory(file, 1); + } + + public void scanDirectory(File file, int depthLimit) { + if (depthLimit < 0) return; + if (isJavaHome(file)) { + versionList.add(new LocalJavaVersion(file)); + } else { + File[] files = file.listFiles(); + if (files == null) return; + for (File listFile : files) { + if (listFile.isDirectory()) { + scanDirectory(listFile, depthLimit - 1); + } + } + } + } + + public void prettyPrint() { + String s = "Fun fact these are the found Java Runtime Environments:\n"; + for (LocalJavaVersion localJavaVersion : versionList) { + s += localJavaVersion.prettyPrint(); + } + System.out.println(s); + } + + public void scanDefaultPaths() { + File home = new File(System.getProperty("user.home")); + scanDirectory(new File(home, ".sdkman/candidates/java")); + scanDirectory(new File(home, ".jdks")); + scanDirectory(new File("/usr"), 0); + String[] paths = System.getProperty(PropertyNames.JAVA_SCAN_PATH, "").split(File.pathSeparator); + for (String path : paths) { + if (!path.isEmpty()) { + scanDirectory(new File(path).getParentFile(), 3); + } + } + } + + public LocalJavaVersion findCandidate() { + LocalJavaVersion bestFit = null; + for (LocalJavaVersion localJavaVersion : versionList) { + if (localJavaVersion.isJdk() && localJavaVersion.getMajorVersion() == 16) { + bestFit = localJavaVersion; + } + } + return bestFit; + } + + public static class LocalJavaVersion { + private final File javaHome; + private String versionString; + + public LocalJavaVersion(File javaHome) { + this.javaHome = javaHome; + } + + public File getJavaHome() { + return javaHome; + } + + public File getJavaBinary() { + return new File(javaHome, JAVA_BINARY_PATH); + } + + public boolean isJdk() { + return new File(javaHome, JAVA_COMPILER_PATH).exists(); + } + + public String getVersionString() { + if (versionString == null) { + ProcessBuilder processBuilder = new ProcessBuilder(); + processBuilder.command(getJavaBinary().getAbsolutePath(), "-version"); + processBuilder.redirectInput(ProcessBuilder.Redirect.PIPE); + processBuilder.redirectOutput(ProcessBuilder.Redirect.PIPE); + processBuilder.redirectError(ProcessBuilder.Redirect.PIPE); + try { + Process process = processBuilder.start(); + process.waitFor(); + versionString = IOUtils.toString(process.getInputStream()) + IOUtils.toString(process.getErrorStream()); + } catch (Exception e) { + e.printStackTrace(); + versionString = "<invalid>"; + } + } + return versionString; + } + + public String prettyPrint() { + return javaHome.getAbsolutePath() + ":\n" + + "\tJava Binary: " + getJavaBinary().getAbsolutePath() + "\n" + + "\tMajor Version: " + getMajorVersion() + "\n" + + "\tFull Version: " + getVersion() + "\n" + + "\tIs Jdk: " + isJdk() + "\n" + ; + } + + public String getVersion() { + String v = getVersionString(); + String[] s = v.split("\""); + if (s.length < 2) return null; + return s[1]; + } + + public int getMajorVersion() { + try { + return Integer.parseInt(getVersion().split("\\.")[0]); + } catch (Exception e) { + return -1; + } + } + } } |