#256: improve package manager API

cli/src/main/java/com/devonfw/tools/ide/context/AbstractIdeContext.java

@@ -1,5 +1,19 @@
 package com.devonfw.tools.ide.context;
 
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.net.InetAddress;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.List;
+import java.util.Locale;
+import java.util.Map;
+import java.util.Objects;
+import java.util.function.Function;
+
 import com.devonfw.tools.ide.cli.CliAbortException;
 import com.devonfw.tools.ide.cli.CliArgument;
 import com.devonfw.tools.ide.cli.CliArguments;
@@ -36,18 +50,6 @@
 import com.devonfw.tools.ide.step.StepImpl;
 import com.devonfw.tools.ide.url.model.UrlMetadata;
 
-import java.io.IOException;
-import java.net.InetAddress;
-import java.nio.file.Files;
-import java.nio.file.Path;
-import java.util.HashMap;
-import java.util.Iterator;
-import java.util.List;
-import java.util.Locale;
-import java.util.Map;
-import java.util.Objects;
-import java.util.function.Function;
-
 /**
  * Abstract base implementation of {@link IdeContext}.
  */
@@ -929,4 +931,65 @@ public boolean apply(CliArguments arguments, Commandlet cmd, CompletionCandidate
     return true;
   }
 
+  public String findBash() {
+
+    String bash = "bash";
+    if (SystemInfoImpl.INSTANCE.isWindows()) {
+      bash = findBashOnWindows();
+    }
+
+    return bash;
+  }
+
+  private String findBashOnWindows() {
+
+    // Check if Git Bash exists in the default location
+    Path defaultPath = Path.of("C:\\Program Files\\Git\\bin\\bash.exe");
+    if (Files.exists(defaultPath)) {
+      return defaultPath.toString();
+    }
+
+    // If not found in the default location, try the registry query
+    String[] bashVariants = { "GitForWindows", "Cygwin\\setup" };
+    String[] registryKeys = { "HKEY_LOCAL_MACHINE", "HKEY_CURRENT_USER" };
+    String regQueryResult;
+    for (String bashVariant : bashVariants) {
+      for (String registryKey : registryKeys) {
+        String toolValueName = ("GitForWindows".equals(bashVariant)) ? "InstallPath" : "rootdir";
+        String command = "reg query " + registryKey + "\\Software\\" + bashVariant + "  /v " + toolValueName + " 2>nul";
+
+        try {
+          Process process = new ProcessBuilder("cmd.exe", "/c", command).start();
+          try (BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()))) {
+            StringBuilder output = new StringBuilder();
+            String line;
+
+            while ((line = reader.readLine()) != null) {
+              output.append(line);
+            }
+
+            int exitCode = process.waitFor();
+            if (exitCode != 0) {
+              return null;
+            }
+
+            regQueryResult = output.toString();
+            if (regQueryResult != null) {
+              int index = regQueryResult.indexOf("REG_SZ");
+              if (index != -1) {
+                String path = regQueryResult.substring(index + "REG_SZ".length()).trim();
+                return path + "\\bin\\bash.exe";
+              }
+            }
+
+          }
+        } catch (Exception e) {
+          return null;
+        }
+      }
+    }
+    // no bash found
+    throw new IllegalStateException("Could not find Bash. Please install Git for Windows and rerun.");
+  }
+
 }

cli/src/main/java/com/devonfw/tools/ide/context/IdeContext.java

@@ -471,4 +471,12 @@ default void setIdeHome(Path ideHome) {
    * @param ideHome The path to the IDE home directory.
    */
   void setCwd(Path userDir, String workspace, Path ideHome);
+
+  /**
+   * Finds the path to the Bash executable.
+   *
+   * @return the {@link String} to the Bash executable, or {@code null} if Bash is not found
+   */
+  String findBash();
+
 }

cli/src/main/java/com/devonfw/tools/ide/process/ProcessContextImpl.java

@@ -245,57 +245,6 @@ private String getSheBang(Path file) {
     return null;
   }
 
-  private String findBashOnWindows() {
-
-    // Check if Git Bash exists in the default location
-    Path defaultPath = Path.of("C:\\Program Files\\Git\\bin\\bash.exe");
-    if (Files.exists(defaultPath)) {
-      return defaultPath.toString();
-    }
-
-    // If not found in the default location, try the registry query
-    String[] bashVariants = { "GitForWindows", "Cygwin\\setup" };
-    String[] registryKeys = { "HKEY_LOCAL_MACHINE", "HKEY_CURRENT_USER" };
-    String regQueryResult;
-    for (String bashVariant : bashVariants) {
-      for (String registryKey : registryKeys) {
-        String toolValueName = ("GitForWindows".equals(bashVariant)) ? "InstallPath" : "rootdir";
-        String command = "reg query " + registryKey + "\\Software\\" + bashVariant + "  /v " + toolValueName + " 2>nul";
-
-        try {
-          Process process = new ProcessBuilder("cmd.exe", "/c", command).start();
-          try (BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()))) {
-            StringBuilder output = new StringBuilder();
-            String line;
-
-            while ((line = reader.readLine()) != null) {
-              output.append(line);
-            }
-
-            int exitCode = process.waitFor();
-            if (exitCode != 0) {
-              return null;
-            }
-
-            regQueryResult = output.toString();
-            if (regQueryResult != null) {
-              int index = regQueryResult.indexOf("REG_SZ");
-              if (index != -1) {
-                String path = regQueryResult.substring(index + "REG_SZ".length()).trim();
-                return path + "\\bin\\bash.exe";
-              }
-            }
-
-          }
-        } catch (Exception e) {
-          return null;
-        }
-      }
-    }
-    // no bash found
-    throw new IllegalStateException("Could not find Bash. Please install Git for Windows and rerun.");
-  }
-
   private String addExecutable(String exec, List<String> args) {
 
     String interpreter = null;
@@ -317,19 +266,12 @@ private String addExecutable(String exec, List<String> args) {
       }
     }
     if (isBashScript) {
-      String bash = "bash";
-      interpreter = bash;
-      // here we want to have native OS behavior even if OS is mocked during tests...
-      if (SystemInfoImpl.INSTANCE.isWindows()) {
-        String findBashOnWindowsResult = findBashOnWindows();
-        if (findBashOnWindowsResult != null) {
-          bash = findBashOnWindowsResult;
-        }
-      }
-      args.add(bash);
-    } else if (SystemInfoImpl.INSTANCE.isWindows() && "msi".equalsIgnoreCase(fileExtension)) {
-      args.add("msiexec");
-      args.add("/i");
+      interpreter = "bash";
+      args.add(this.context.findBash());
+    }
+    if ("msi".equalsIgnoreCase(fileExtension)) {
+      args.add(0, "/i");
+      args.add(0, "msiexec");
     }
     args.add(exec);
     return interpreter;
@@ -365,22 +307,12 @@ private void modifyArgumentsOnBackgroundProcess(ProcessMode processMode) {
       throw new IllegalStateException("Cannot handle non background process mode!");
     }
 
-    String bash = "bash";
-
-    // try to use bash in windows to start the process
-    if (this.context.getSystemInfo().isWindows()) {
-
-      String findBashOnWindowsResult = findBashOnWindows();
-      if (findBashOnWindowsResult != null) {
-
-        bash = findBashOnWindowsResult;
-
-      } else {
-        this.context.warning(
-            "Cannot start background process in windows! No bash installation found, output will be discarded.");
-        this.processBuilder.redirectOutput(Redirect.DISCARD).redirectError(Redirect.DISCARD);
-        return;
-      }
+    String bash = this.context.findBash();
+    if (bash == null) {
+      context.warning(
+          "Cannot start background process via bash because no bash installation was found. Hence, output will be discarded.");
+      this.processBuilder.redirectOutput(Redirect.DISCARD).redirectError(Redirect.DISCARD);
+      return;
     }
 
     String commandToRunInBackground = buildCommandToRunInBackground();

cli/src/main/java/com/devonfw/tools/ide/tool/GlobalToolCommandlet.java

@@ -2,8 +2,8 @@
 
 import java.nio.file.Files;
 import java.nio.file.Path;
+import java.util.Arrays;
 import java.util.List;
-import java.util.Map;
 import java.util.Set;
 
 import com.devonfw.tools.ide.common.Tag;
@@ -26,7 +26,7 @@ public abstract class GlobalToolCommandlet extends ToolCommandlet {
    * @param context the {@link IdeContext}.
    * @param tool the {@link #getName() tool name}.
    * @param tags the {@link #getTags() tags} classifying the tool. Should be created via {@link Set#of(Object) Set.of}
-   *        method.
+   * method.
    */
   public GlobalToolCommandlet(IdeContext context, String tool, Set<Tag> tags) {
 
@@ -36,57 +36,63 @@ public GlobalToolCommandlet(IdeContext context, String tool, Set<Tag> tags) {
   /**
    * Performs the installation of the {@link #getName() tool} via a package manager.
    *
-   * @param silent - {@code true} if called recursively to suppress verbose logging, {@code false} otherwise.
-   * @param commands - A {@link Map} containing the commands used to perform the installation for each package manager.
-   * @return {@code true} if the tool was newly installed, {@code false} if the tool was already installed before and
-   *         nothing has changed.
+   * @param silent {@code true} if called recursively to suppress verbose logging, {@code false} otherwise.
+   * @param commandStrings commandStrings The package manager command strings to execute.
+   * @return {@code true} if installation succeeds with any of the package manager commands, {@code false} otherwise.
    */
-  protected boolean installWithPackageManger(Map<PackageManager, List<String>> commands, boolean silent) {
+  protected boolean installWithPackageManager(boolean silent, String... commandStrings) {
 
-    Path binaryPath = this.context.getPath().findBinary(Path.of(getBinaryName()));
-
-    if (binaryPath != null && Files.exists(binaryPath) && !this.context.isForceMode()) {
-      IdeLogLevel level = silent ? IdeLogLevel.DEBUG : IdeLogLevel.INFO;
-      this.context.level(level).log("{} is already installed at {}", this.tool, binaryPath);
-      return false;
-    }
+    List<PackageManagerCommand> pmCommands = Arrays.stream(commandStrings).map(PackageManagerCommand::of).toList();
+    return installWithPackageManager(silent, pmCommands);
+  }
 
-    Path bashPath = this.context.getPath().findBinary(Path.of("bash"));
-    if (bashPath == null || !Files.exists(bashPath)) {
-      context.warning("Bash was not found on this machine. Not Proceeding with installation of tool " + this.tool);
-      return false;
-    }
+  /**
+   * Performs the installation of the {@link #getName() tool} via a package manager.
+   * 
+   * @param silent {@code true} if called recursively to suppress verbose logging, {@code false} otherwise.
+   * @param pmCommands A list of {@link PackageManagerCommand} to be used for installation.
+   * @return {@code true} if installation succeeds with any of the package manager commands, {@code false} otherwise.
+   */
+  protected boolean installWithPackageManager(boolean silent, List<PackageManagerCommand> pmCommands) {
+
+    for (PackageManagerCommand pmCommand : pmCommands) {
+      PackageManager packageManager = pmCommand.packageManager();
+      Path packageManagerPath = this.context.getPath().findBinary(Path.of(packageManager.getBinaryName()));
+      if (packageManagerPath == null || !Files.exists(packageManagerPath)) {
+        this.context.debug("{} is not installed", packageManager.toString());
+        continue; // Skip to the next package manager command
+      }
 
-    PackageManager foundPackageManager = null;
-    for (PackageManager pm : commands.keySet()) {
-      if (Files.exists(this.context.getPath().findBinary(Path.of(pm.toString().toLowerCase())))) {
-        foundPackageManager = pm;
-        break;
+      if (executePackageManagerCommand(pmCommand, silent)) {
+        return true; // Successfully installed
       }
     }
+    return false; // None of the package manager commands were successful
+  }
 
-    int finalExitCode = 0;
-    if (foundPackageManager == null) {
-      context.warning("No supported Package Manager found for installation");
-      return false;
-    } else {
-      List<String> commandList = commands.get(foundPackageManager);
-      if (commandList != null) {
-        for (String command : commandList) {
-          ProcessContext pc = this.context.newProcess().errorHandling(ProcessErrorHandling.WARNING).executable(bashPath)
-              .addArgs("-c", command);
-          finalExitCode = pc.run();
-        }
+  /**
+   * Executes the provided package manager command.
+   *
+   * @param pmCommand The {@link PackageManagerCommand} containing the commands to execute.
+   * @param silent {@code true} if called recursively to suppress verbose logging, {@code false} otherwise.
+   * @return {@code true} if the package manager commands execute successfully, {@code false} otherwise.
+   */
+  private boolean executePackageManagerCommand(PackageManagerCommand pmCommand, boolean silent) {
+
+    String bashPath = this.context.findBash();
+    for (String command : pmCommand.commands()) {
+      ProcessContext pc = this.context.newProcess().errorHandling(ProcessErrorHandling.WARNING).executable(bashPath)
+          .addArgs("-c", command);
+      int exitCode = pc.run();
+      if (exitCode != 0) {
+        this.context.warning("{} command did not execute successfully", command);
+        return false;
       }
     }
 
-    if (finalExitCode == 0) {
+    if (!silent) {
       this.context.success("Successfully installed {}", this.tool);
-    } else {
-      this.context.warning("{} was not successfully installed", this.tool);
-      return false;
     }
-    postInstall();
     return true;
   }
 
@@ -122,7 +128,7 @@ protected boolean doInstall(boolean silent) {
       tmpDir = fileAccess.createTempDir(getName());
       Path downloadBinaryPath = tmpDir.resolve(target.getFileName());
       fileAccess.extract(target, downloadBinaryPath);
-      downloadBinaryPath = fileAccess.findFirst(downloadBinaryPath, Files::isExecutable, false);
+      executable = fileAccess.findFirst(downloadBinaryPath, Files::isExecutable, false);
     }
     ProcessContext pc = this.context.newProcess().errorHandling(ProcessErrorHandling.WARNING).executable(executable);
     int exitCode = pc.run();

cli/src/main/java/com/devonfw/tools/ide/tool/PackageManager.java

@@ -1,5 +1,30 @@
 package com.devonfw.tools.ide.tool;
 
+/**
+ * Represents a package manager used for managing software packages.
+ */
 public enum PackageManager {
-  APT, ZYPPER, YUM, DNF
+  APT, ZYPPER, YUM, DNF;
+
+  /**
+   * Extracts the package manager from the provided command string.
+   *
+   * @param command The command string to extract the package manager from.
+   * @return The corresponding {@code PackageManager} based on the provided command string.
+   * @throws IllegalArgumentException If the command string does not contain a recognized package manager.
+   */
+  public static PackageManager extractPackageManager(String command) {
+
+    if (command.contains("apt")) return APT;
+    if (command.contains("yum")) return YUM;
+    if (command.contains("zypper")) return ZYPPER;
+    if (command.contains("dnf")) return DNF;
+
+    throw new IllegalArgumentException("Unknown package manager in command: " + command);
+  }
+
+  public String getBinaryName() {
+
+    return name().toLowerCase();
+  }
 }