termux-app

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package com.termux.shared.shell;
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import androidx.annotation.NonNull;
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import androidx.annotation.Nullable;
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import com.termux.shared.file.FileUtils;
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import com.termux.terminal.TerminalBuffer;
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import com.termux.terminal.TerminalEmulator;
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import com.termux.terminal.TerminalSession;
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import java.lang.reflect.Field;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.List;
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public class ShellUtils {
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    /** Get process id of {@link Process}. */
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    public static int getPid(Process p) {
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        try {
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            Field f = p.getClass().getDeclaredField("pid");
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            f.setAccessible(true);
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            try {
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                return f.getInt(p);
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            } finally {
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                f.setAccessible(false);
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            }
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        } catch (Throwable e) {
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            return -1;
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        }
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    }
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    /** Setup shell command arguments for the execute. */
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    @NonNull
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    public static String[] setupShellCommandArguments(@NonNull String executable, @Nullable String[] arguments) {
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        List<String> result = new ArrayList<>();
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        result.add(executable);
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        if (arguments != null) Collections.addAll(result, arguments);
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        return result.toArray(new String[0]);
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    }
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    /** Get basename for executable. */
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    @Nullable
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    public static String getExecutableBasename(@Nullable String executable) {
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        return FileUtils.getFileBasename(executable);
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    }
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    /** Get transcript for {@link TerminalSession}. */
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    public static String getTerminalSessionTranscriptText(TerminalSession terminalSession, boolean linesJoined, boolean trim) {
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        if (terminalSession == null) return null;
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        TerminalEmulator terminalEmulator = terminalSession.getEmulator();
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        if (terminalEmulator == null) return null;
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        TerminalBuffer terminalBuffer = terminalEmulator.getScreen();
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        if (terminalBuffer == null) return null;
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        String transcriptText;
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        if (linesJoined)
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            transcriptText = terminalBuffer.getTranscriptTextWithFullLinesJoined();
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        else
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            transcriptText = terminalBuffer.getTranscriptTextWithoutJoinedLines();
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        if (transcriptText == null) return null;
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        if (trim)
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            transcriptText = transcriptText.trim();
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        return transcriptText;
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    }
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}
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