Examples with ReversedLinesFileReader org.apache.commons.io.input.ReversedLinesFileReader used on opensource projects

Example 1 with ReversedLinesFileReader

use of org.apache.commons.io.input.ReversedLinesFileReader in project libresonic by Libresonic.

the class HelpController method getLatestLogEntries.

private static List<String> getLatestLogEntries(File logFile) {
    try {
        List<String> lines = new ArrayList<>(LOG_LINES_TO_SHOW);
        ReversedLinesFileReader reader = new ReversedLinesFileReader(logFile, Charset.defaultCharset());
        String current;
        while ((current = reader.readLine()) != null && lines.size() < LOG_LINES_TO_SHOW) {
            lines.add(0, current);
        }
        return lines;
    } catch (Exception e) {
        logger.warn("Could not open log file " + logFile, e);
        return null;
    }
}

Example 2 with ReversedLinesFileReader

use of org.apache.commons.io.input.ReversedLinesFileReader in project FlareBot by FlareBot.

the class LogsCommand method onCommand.

@Override
public void onCommand(User sender, GuildWrapper guild, TextChannel channel, Message message, String[] args, Member member) {
    int lineCount = DEFAULT_LINE_COUNT;
    if (args.length == 1) {
        lineCount = GeneralUtils.getInt(args[0], DEFAULT_LINE_COUNT);
    }
    try {
        ReversedLinesFileReader rlfr = new ReversedLinesFileReader(new File("latest.log"), Charset.forName("UTF-8"));
        StringBuilder sb = new StringBuilder();
        String line;
        for (int i = 0; i < lineCount; i++) {
            line = rlfr.readLine();
            if (line == null)
                break;
            sb.append(line).append("\n");
        }
        String pasteUrl = MessageUtils.paste(sb.toString());
        MessageUtils.sendPM(channel, sender, pasteUrl == null ? "null" : pasteUrl, "Could not DM you the logs! " + "Please make sure the privacy settings allow me :( dis is pwivate, me need to send pwivately.");
    } catch (IOException e) {
        FlareBot.LOGGER.error("Failed to read latest.log", e);
        MessageUtils.sendException("Failed to read latest.log", e, channel);
    }
}

Example 3 with ReversedLinesFileReader

use of org.apache.commons.io.input.ReversedLinesFileReader in project top20 by algorithmica-repository.

the class NthLineFromEnd method nthLineFromEnd4.

public static String nthLineFromEnd4(String file, int n) throws Exception {
    ReversedLinesFileReader rfr = new ReversedLinesFileReader(new File(file));
    int count = 0;
    String line = null;
    while ((line = rfr.readLine()) != null) {
        if (++count == n)
            break;
    }
    rfr.close();
    return line;
}

Example 4 with ReversedLinesFileReader

use of org.apache.commons.io.input.ReversedLinesFileReader in project structr by structr.

the class ServerLogFunction method apply.

@Override
public Object apply(final ActionContext ctx, final Object caller, final Object[] sources) throws FrameworkException {
    int lines = 50;
    if (sources != null && sources.length > 0 && sources[0] instanceof Number) {
        lines = ((Number) sources[0]).intValue();
    }
    try (final ReversedLinesFileReader reader = new ReversedLinesFileReader(getServerlogFile(), Charset.forName("utf-8"))) {
        final StringBuilder sb = new StringBuilder();
        while (lines > 0) {
            final String line = reader.readLine();
            if (line == null) {
                lines = 0;
            } else {
                sb.insert(0, line.concat("\n"));
                lines--;
            }
        }
        return sb.toString();
    } catch (IOException ex) {
        logger.warn("", ex);
    }
    return "";
}

Example 5 with ReversedLinesFileReader

use of org.apache.commons.io.input.ReversedLinesFileReader in project top20 by algorithmica-repository.

the class FindKthLinefromEnd method findkthline3.

public static String findkthline3(File f, int k) throws Exception {
    ReversedLinesFileReader rfr = new ReversedLinesFileReader(f);
    String line = null;
    int count = 0;
    while ((line = rfr.readLine()) != null) {
        if (++count == k)
            break;
    }
    rfr.close();
    return line;
}