Examples with PathSource org.jline.builtins.Source.PathSource used on opensource projects

Example 1 with PathSource

use of org.jline.builtins.Source.PathSource in project felix by apache.

the class Posix method head.

protected void head(CommandSession session, Process process, String[] argv) throws Exception {
    String[] usage = { "head -  displays first lines of file", "Usage: head [-n lines | -c bytes] [file ...]", "  -? --help                    Show help", "  -n --lines=LINES             Print line counts", "  -c --bytes=BYTES             Print byte counts" };
    Options opt = parseOptions(session, usage, argv);
    if (opt.isSet("lines") && opt.isSet("bytes")) {
        throw new IllegalArgumentException("usage: head [-n # | -c #] [file ...]");
    }
    int nbLines = Integer.MAX_VALUE;
    int nbBytes = Integer.MAX_VALUE;
    if (opt.isSet("lines")) {
        nbLines = opt.getNumber("lines");
    } else if (opt.isSet("bytes")) {
        nbBytes = opt.getNumber("bytes");
    } else {
        nbLines = 10;
    }
    List<Source> sources = new ArrayList<>();
    if (opt.args().isEmpty()) {
        opt.args().add("-");
    }
    for (String arg : opt.args()) {
        if ("-".equals(arg)) {
            sources.add(new StdInSource(process));
        } else {
            sources.add(new PathSource(session.currentDir().resolve(arg), arg));
        }
    }
    for (Source src : sources) {
        int bytes = nbBytes;
        int lines = nbLines;
        if (sources.size() > 1) {
            if (src != sources.get(0)) {
                process.out().println();
            }
            process.out().println("==> " + src.getName() + " <==");
        }
        try (InputStream is = src.read()) {
            byte[] buf = new byte[1024];
            int nb;
            do {
                nb = is.read(buf);
                if (nb > 0 && lines > 0 && bytes > 0) {
                    nb = Math.min(nb, bytes);
                    for (int i = 0; i < nb; i++) {
                        if (buf[i] == '\n' && --lines <= 0) {
                            nb = i + 1;
                            break;
                        }
                    }
                    bytes -= nb;
                    process.out().write(buf, 0, nb);
                }
            } while (nb > 0 && lines > 0 && bytes > 0);
        }
    }
}

Example 2 with PathSource

use of org.jline.builtins.Source.PathSource in project felix by apache.

the class Posix method grep.

protected void grep(CommandSession session, Process process, String[] argv) throws Exception {
    final String[] usage = { "grep -  search for PATTERN in each FILE or standard input.", "Usage: grep [OPTIONS] PATTERN [FILES]", "  -? --help                Show help", "  -i --ignore-case         Ignore case distinctions", "  -n --line-number         Prefix each line with line number within its input file", "  -q --quiet, --silent     Suppress all normal output", "  -v --invert-match        Select non-matching lines", "  -w --word-regexp         Select only whole words", "  -x --line-regexp         Select only whole lines", "  -c --count               Only print a count of matching lines per file", "     --color=WHEN          Use markers to distinguish the matching string, may be `always', `never' or `auto'", "  -B --before-context=NUM  Print NUM lines of leading context before matching lines", "  -A --after-context=NUM   Print NUM lines of trailing context after matching lines", "  -C --context=NUM         Print NUM lines of output context", "     --pad-lines           Pad line numbers" };
    Options opt = parseOptions(session, usage, argv);
    List<String> args = opt.args();
    if (args.isEmpty()) {
        throw new IllegalArgumentException("no pattern supplied");
    }
    String regex = args.remove(0);
    String regexp = regex;
    if (opt.isSet("word-regexp")) {
        regexp = "\\b" + regexp + "\\b";
    }
    if (opt.isSet("line-regexp")) {
        regexp = "^" + regexp + "$";
    } else {
        regexp = ".*" + regexp + ".*";
    }
    Pattern p;
    Pattern p2;
    if (opt.isSet("ignore-case")) {
        p = Pattern.compile(regexp, Pattern.CASE_INSENSITIVE);
        p2 = Pattern.compile(regex, Pattern.CASE_INSENSITIVE);
    } else {
        p = Pattern.compile(regexp);
        p2 = Pattern.compile(regex);
    }
    int after = opt.isSet("after-context") ? opt.getNumber("after-context") : -1;
    int before = opt.isSet("before-context") ? opt.getNumber("before-context") : -1;
    int context = opt.isSet("context") ? opt.getNumber("context") : 0;
    String lineFmt = opt.isSet("pad-lines") ? "%6d" : "%d";
    if (after < 0) {
        after = context;
    }
    if (before < 0) {
        before = context;
    }
    List<String> lines = new ArrayList<>();
    boolean invertMatch = opt.isSet("invert-match");
    boolean lineNumber = opt.isSet("line-number");
    boolean count = opt.isSet("count");
    String color = opt.isSet("color") ? opt.get("color") : "auto";
    boolean colored;
    switch(color) {
        case "always":
        case "yes":
        case "force":
            colored = true;
            break;
        case "never":
        case "no":
        case "none":
            colored = false;
            break;
        case "auto":
        case "tty":
        case "if-tty":
            colored = process.isTty(1);
            break;
        default:
            throw new IllegalArgumentException("invalid argument ‘" + color + "’ for ‘--color’");
    }
    Map<String, String> colors = colored ? getColorMap(session, "GREP", DEFAULT_GREP_COLORS) : Collections.emptyMap();
    List<Source> sources = new ArrayList<>();
    if (opt.args().isEmpty()) {
        opt.args().add("-");
    }
    for (String arg : opt.args()) {
        if ("-".equals(arg)) {
            sources.add(new StdInSource(process));
        } else {
            sources.add(new PathSource(session.currentDir().resolve(arg), arg));
        }
    }
    boolean match = false;
    for (Source source : sources) {
        boolean firstPrint = true;
        int nb = 0;
        int lineno = 1;
        String line;
        int lineMatch = 0;
        try (BufferedReader r = new BufferedReader(new InputStreamReader(source.read()))) {
            while ((line = r.readLine()) != null) {
                if (line.length() == 1 && line.charAt(0) == '\n') {
                    break;
                }
                boolean matches = p.matcher(line).matches();
                AttributedStringBuilder sbl = new AttributedStringBuilder();
                if (!count) {
                    if (sources.size() > 1) {
                        if (colored) {
                            applyStyle(sbl, colors, "fn");
                        }
                        sbl.append(source.getName());
                        if (colored) {
                            applyStyle(sbl, colors, "se");
                        }
                        sbl.append(":");
                    }
                    if (lineNumber) {
                        if (colored) {
                            applyStyle(sbl, colors, "ln");
                        }
                        sbl.append(String.format(lineFmt, lineno));
                        if (colored) {
                            applyStyle(sbl, colors, "se");
                        }
                        sbl.append((matches ^ invertMatch) ? ":" : "-");
                    }
                    String style = matches ^ invertMatch ^ (invertMatch && colors.containsKey("rv")) ? "sl" : "cx";
                    if (colored) {
                        applyStyle(sbl, colors, style);
                    }
                    AttributedString aLine = AttributedString.fromAnsi(line);
                    Matcher matcher2 = p2.matcher(aLine.toString());
                    int cur = 0;
                    while (matcher2.find()) {
                        int index = matcher2.start(0);
                        AttributedString prefix = aLine.subSequence(cur, index);
                        sbl.append(prefix);
                        cur = matcher2.end();
                        if (colored) {
                            applyStyle(sbl, colors, invertMatch ? "mc" : "ms", "mt");
                        }
                        sbl.append(aLine.subSequence(index, cur));
                        if (colored) {
                            applyStyle(sbl, colors, style);
                        }
                        nb++;
                    }
                    sbl.append(aLine.subSequence(cur, aLine.length()));
                }
                if (matches ^ invertMatch) {
                    lines.add(sbl.toAnsi(Shell.getTerminal(session)));
                    lineMatch = lines.size();
                } else {
                    if (lineMatch != 0 & lineMatch + after + before <= lines.size()) {
                        if (!count) {
                            if (!firstPrint && before + after > 0) {
                                AttributedStringBuilder sbl2 = new AttributedStringBuilder();
                                if (colored) {
                                    applyStyle(sbl2, colors, "se");
                                }
                                sbl2.append("--");
                                process.out().println(sbl2.toAnsi(Shell.getTerminal(session)));
                            } else {
                                firstPrint = false;
                            }
                            for (int i = 0; i < lineMatch + after; i++) {
                                process.out().println(lines.get(i));
                            }
                        }
                        while (lines.size() > before) {
                            lines.remove(0);
                        }
                        lineMatch = 0;
                    }
                    lines.add(sbl.toAnsi(Shell.getTerminal(session)));
                    while (lineMatch == 0 && lines.size() > before) {
                        lines.remove(0);
                    }
                }
                lineno++;
            }
            if (!count && lineMatch > 0) {
                if (!firstPrint && before + after > 0) {
                    AttributedStringBuilder sbl2 = new AttributedStringBuilder();
                    if (colored) {
                        applyStyle(sbl2, colors, "se");
                    }
                    sbl2.append("--");
                    process.out().println(sbl2.toAnsi(Shell.getTerminal(session)));
                } else {
                    firstPrint = false;
                }
                for (int i = 0; i < lineMatch + after && i < lines.size(); i++) {
                    process.out().println(lines.get(i));
                }
            }
            if (count) {
                process.out().println(nb);
            }
            match |= nb > 0;
        }
    }
    Process.Utils.current().error(match ? 0 : 1);
}

Example 3 with PathSource

use of org.jline.builtins.Source.PathSource in project felix by apache.

the class Posix method less.

protected void less(CommandSession session, Process process, String[] argv) throws Exception {
    String[] usage = { "less -  file pager", "Usage: less [OPTIONS] [FILES]", "  -? --help                    Show help", "  -e --quit-at-eof             Exit on second EOF", "  -E --QUIT-AT-EOF             Exit on EOF", "  -F --quit-if-one-screen      Exit if entire file fits on first screen", "  -q --quiet --silent          Silent mode", "  -Q --QUIET --SILENT          Completely  silent", "  -S --chop-long-lines         Do not fold long lines", "  -i --ignore-case             Search ignores lowercase case", "  -I --IGNORE-CASE             Search ignores all case", "  -x --tabs                    Set tab stops", "  -N --LINE-NUMBERS            Display line number for each line", "     --no-init                 Disable terminal initialization", "     --no-keypad               Disable keypad handling" };
    boolean hasExtendedOptions = false;
    try {
        Less.class.getField("quitIfOneScreen");
        hasExtendedOptions = true;
    } catch (NoSuchFieldException e) {
        List<String> ustrs = new ArrayList<>(Arrays.asList(usage));
        ustrs.removeIf(s -> s.contains("--quit-if-one-screen") || s.contains("--no-init") || s.contains("--no-keypad"));
        usage = ustrs.toArray(new String[ustrs.size()]);
    }
    Options opt = parseOptions(session, usage, argv);
    List<Source> sources = new ArrayList<>();
    if (opt.args().isEmpty()) {
        opt.args().add("-");
    }
    for (String arg : opt.args()) {
        if ("-".equals(arg)) {
            sources.add(new StdInSource(process));
        } else {
            sources.add(new PathSource(session.currentDir().resolve(arg), arg));
        }
    }
    if (!process.isTty(1)) {
        for (Source source : sources) {
            try (BufferedReader reader = new BufferedReader(new InputStreamReader(source.read()))) {
                cat(process, reader, opt.isSet("LINE-NUMBERS"));
            }
        }
        return;
    }
    Less less = new Less(Shell.getTerminal(session));
    less.quitAtFirstEof = opt.isSet("QUIT-AT-EOF");
    less.quitAtSecondEof = opt.isSet("quit-at-eof");
    less.quiet = opt.isSet("quiet");
    less.veryQuiet = opt.isSet("QUIET");
    less.chopLongLines = opt.isSet("chop-long-lines");
    less.ignoreCaseAlways = opt.isSet("IGNORE-CASE");
    less.ignoreCaseCond = opt.isSet("ignore-case");
    if (opt.isSet("tabs")) {
        less.tabs = opt.getNumber("tabs");
    }
    less.printLineNumbers = opt.isSet("LINE-NUMBERS");
    if (hasExtendedOptions) {
        Less.class.getField("quitIfOneScreen").set(less, opt.isSet("quit-if-one-screen"));
        Less.class.getField("noInit").set(less, opt.isSet("no-init"));
        Less.class.getField("noKeypad").set(less, opt.isSet("no-keypad"));
    }
    less.run(sources);
}

Example 4 with PathSource

use of org.jline.builtins.Source.PathSource in project felix by apache.

the class Posix method wc.

protected void wc(CommandSession session, Process process, String[] argv) throws Exception {
    String[] usage = { "wc -  word, line, character, and byte count", "Usage: wc [OPTIONS] [FILES]", "  -? --help                    Show help", "  -l --lines                   Print line counts", "  -c --bytes                   Print byte counts", "  -m --chars                   Print character counts", "  -w --words                   Print word counts" };
    Options opt = parseOptions(session, usage, argv);
    List<Source> sources = new ArrayList<>();
    if (opt.args().isEmpty()) {
        opt.args().add("-");
    }
    for (String arg : opt.args()) {
        if ("-".equals(arg)) {
            sources.add(new StdInSource(process));
        } else {
            sources.add(new PathSource(session.currentDir().resolve(arg), arg));
        }
    }
    boolean displayLines = opt.isSet("lines");
    boolean displayWords = opt.isSet("words");
    boolean displayChars = opt.isSet("chars");
    boolean displayBytes = opt.isSet("bytes");
    if (displayChars) {
        displayBytes = false;
    }
    if (!displayLines && !displayWords && !displayChars && !displayBytes) {
        displayLines = true;
        displayWords = true;
        displayBytes = true;
    }
    String format = "";
    if (displayLines) {
        format += "%1$8d";
    }
    if (displayWords) {
        format += "%2$8d";
    }
    if (displayChars) {
        format += "%3$8d";
    }
    if (displayBytes) {
        format += "%4$8d";
    }
    format += "  %5s";
    int totalLines = 0;
    int totalBytes = 0;
    int totalChars = 0;
    int totalWords = 0;
    for (Source src : sources) {
        try (InputStream is = src.read()) {
            AtomicInteger lines = new AtomicInteger();
            AtomicInteger bytes = new AtomicInteger();
            AtomicInteger chars = new AtomicInteger();
            AtomicInteger words = new AtomicInteger();
            AtomicBoolean inWord = new AtomicBoolean();
            AtomicBoolean lastNl = new AtomicBoolean(true);
            InputStream isc = new FilterInputStream(is) {

                @Override
                public int read() throws IOException {
                    int b = super.read();
                    if (b >= 0) {
                        bytes.incrementAndGet();
                    }
                    return b;
                }

                @Override
                public int read(byte[] b, int off, int len) throws IOException {
                    int nb = super.read(b, off, len);
                    if (nb > 0) {
                        bytes.addAndGet(nb);
                    }
                    return nb;
                }
            };
            IntConsumer consumer = cp -> {
                chars.incrementAndGet();
                boolean ws = Character.isWhitespace(cp);
                if (inWord.getAndSet(!ws) && ws) {
                    words.incrementAndGet();
                }
                if (cp == '\n') {
                    lines.incrementAndGet();
                    lastNl.set(true);
                } else {
                    lastNl.set(false);
                }
            };
            Reader reader = new InputStreamReader(isc);
            while (true) {
                int h = reader.read();
                if (Character.isHighSurrogate((char) h)) {
                    int l = reader.read();
                    if (Character.isLowSurrogate((char) l)) {
                        int cp = Character.toCodePoint((char) h, (char) l);
                        consumer.accept(cp);
                    } else {
                        consumer.accept(h);
                        if (l >= 0) {
                            consumer.accept(l);
                        } else {
                            break;
                        }
                    }
                } else if (h >= 0) {
                    consumer.accept(h);
                } else {
                    break;
                }
            }
            if (inWord.get()) {
                words.incrementAndGet();
            }
            if (!lastNl.get()) {
                lines.incrementAndGet();
            }
            process.out().println(String.format(format, lines.get(), words.get(), chars.get(), bytes.get(), src.getName()));
            totalBytes += bytes.get();
            totalChars += chars.get();
            totalWords += words.get();
            totalLines += lines.get();
        }
    }
    if (sources.size() > 1) {
        process.out().println(String.format(format, totalLines, totalWords, totalChars, totalBytes, "total"));
    }
}