Example usage for java.lang StringBuilder charAt

Introduction

In this page you can find the example usage for java.lang StringBuilder charAt.

Prototype

char charAt(int index);

Source Link

Document

Returns the char value at the specified index.

Usage

From source file:org.apache.brooklyn.util.net.Urls.java

/** returns the items with exactly one "/" between items (whether or not the individual items start or end with /),
 * except where character before the / is a : (url syntax) in which case it will permit multiple (will not remove any).
 * Throws a NullPointerException if any elements of 'items' is null.
 *  *///ww  w.j  a  va2s. c o  m
public static String mergePaths(String... items) {
    List<String> parts = Arrays.asList(items);

    if (parts.contains(null)) {
        throw new NullPointerException(String
                .format("Unable to reliably merge path from parts: %s; input contains null values", parts));
    }

    StringBuilder result = new StringBuilder();
    for (String part : parts) {
        boolean trimThisMerge = result.length() > 0 && !result.toString().endsWith("://")
                && !result.toString().endsWith(":///") && !result.toString().endsWith(":");
        if (trimThisMerge) {
            while (result.length() > 0 && result.charAt(result.length() - 1) == '/')
                result.deleteCharAt(result.length() - 1);
            result.append('/');
        }
        int i = result.length();
        result.append(part);
        if (trimThisMerge) {
            while (result.length() > i && result.charAt(i) == '/')
                result.deleteCharAt(i);
        }
    }
    return result.toString();
}

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From source file:com.comcast.viper.flume2storm.zookeeper.ZkUtilies.java

/**
 * Builds a valid (guaranteed) ZNode path made of the components passed in
 * parameter. This method handles the path separator between component, so it
 * can be called with or without them./*  ww w  . j  av  a  2s .c  om*/
 * 
 * @param components
 *          A bunch of ZNode path elements. Some may be null.
 * @return The concatenated path of all the elements
 * @throws IllegalArgumentException
 *           if the path is invalid (empty for example)
 */
public static String buildZkPath(final String... components) {
    Preconditions.checkArgument(components != null, "No path element specified");
    boolean isFirst = true;
    final StringBuilder result = new StringBuilder();
    for (int i = 0; i < components.length; i++) {
        if (StringUtils.isEmpty(components[i])) {
            continue;
        }
        assert components[i] != null;
        // Checking path separator
        if (isFirst) {
            // First element must start with /
            if (!components[i].startsWith(SEPARATOR)) {
                result.append(SEPARATOR);
            }
            result.append(components[i]);
        } else {
            if (!SEPARATOR_CHAR.equals(result.charAt(result.length() - 1))
                    && !components[i].startsWith(SEPARATOR)) {
                result.append(SEPARATOR);
                result.append(components[i]);
            } else if (SEPARATOR_CHAR.equals(result.charAt(result.length() - 1))
                    && components[i].startsWith(SEPARATOR)) {
                result.append(components[i].substring(1));
            } else {
                result.append(components[i]);
            }
        }
        isFirst = false;
    }
    final String path = result.toString();
    PathUtils.validatePath(path);
    return path;
}

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From source file:org.geoserver.ows.util.ResponseUtils.java

/**
 * Given a set of path components a full path is built
 * @param pathComponents The set of path components
 *
 * @return The full url with the path appended.
 * TODO: remove this and replace with Requetss.appendContextPath
 *//*w w  w  .  java 2 s . c o m*/
public static String appendPath(String... pathComponents) {
    StringBuilder result = new StringBuilder(pathComponents[0]);
    for (int i = 1; i < pathComponents.length; i++) {
        String component = pathComponents[i];
        boolean endsWithSlash = result.charAt(result.length() - 1) == '/';
        boolean startsWithSlash = component.startsWith("/");
        if (endsWithSlash && startsWithSlash) {
            result.setLength(result.length() - 1);
        } else if (!endsWithSlash && !startsWithSlash) {
            result.append("/");
        }
        result.append(component);
    }

    return result.toString();
}

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From source file:com.google.publicalerts.cap.CapUtil.java

static String toCase(String s, boolean camel) {
    String[] parts = s.split("_");
    StringBuilder sb = new StringBuilder();
    for (int i = 0; i < parts.length; i++) {
        String part = parts[i];//from   w w w.ja  v a  2 s  . c o m
        if (part.length() > 0) {
            sb.append(part.substring(0, 1).toUpperCase()).append(part.substring(1).toLowerCase());
        }
    }
    if (!camel && sb.length() > 0) {
        sb.replace(0, 1, String.valueOf(Character.toLowerCase(sb.charAt(0))));
    }
    return sb.toString();
}

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From source file:com.igormaznitsa.mindmap.model.ModelUtils.java

@Nullable
public static URI toURI(@Nullable final Path path) {
    if (path == null) {
        return null;
    }//from   ww  w  .  ja  v a 2 s .c o  m
    try {
        final StringBuilder buffer = new StringBuilder();

        final Path root = path.getRoot();
        if (root != null) {
            buffer.append(root.toString().replace('\\', '/'));
        }

        for (final Path p : path) {
            if (buffer.length() > 0 && buffer.charAt(buffer.length() - 1) != '/') {
                buffer.append('/');
            }
            buffer.append(encodeForURI(p.toFile().getName()));
        }

        if (path.isAbsolute()) {
            buffer.insert(0, "file://" + (root == null ? "/" : "")); //NOI18N
        }

        return new URI(buffer.toString());
    } catch (Exception ex) {
        throw new IllegalArgumentException("Can't convert path to URI: " + path, ex); //NOI18N
    }
}

---

From source file:fr.ribesg.bukkit.api.chat.Chat.java

private static void appendClick(final StringBuilder builder, final Click clickAction) {
    if (clickAction != null) {
        if (builder.charAt(builder.length() - 1) != '{') {
            builder.append(',');
        }/*from   w  w  w. j a v  a  2  s .c o  m*/
        builder.append("\"clickEvent\":{\"value\":\"").append(Chat.escapeString(clickAction.getText()))
                .append("\",\"action\":\"");
        switch (clickAction.getType()) {
        case OPEN_URL:
            builder.append("open_url");
            break;
        case SEND_TEXT:
            builder.append("run_command");
            break;
        case SET_TEXT:
            builder.append("suggest_command");
            break;
        }
        builder.append("\"}");
    }
}

---

From source file:fr.ribesg.bukkit.api.chat.Chat.java

/**
 * Converts a String representing standard Minecraft formatted text to
 * a Mojangson Chat 'extra' String and append it to the provided
 * StringBuilder.//from w  w  w  .j a  va2  s .  c o  m
 *
 * @param builder    a StringBuilder
 * @param text       a text
 * @param extraLevel the amount of extra levels added to the Mojangson
 *
 * @return the updated amount of extra levels
 */
private static int appendText(final StringBuilder builder, final String text, int extraLevel) {
    if (builder.charAt(builder.length() - 1) != '{') {
        builder.append(',');
    }
    if (text.contains("http") || text.indexOf(ChatColor.COLOR_CHAR) != -1) {
        builder.append("\"text\":\"\",\"extra\":[");
        ++extraLevel;
        int httpIndex, colorIndex, tmp;
        String remainingText = text, url;
        do {
            httpIndex = remainingText.indexOf("http");
            colorIndex = remainingText.indexOf(ChatColor.COLOR_CHAR);
            if (httpIndex != -1 && (colorIndex == -1 || httpIndex < colorIndex)) {
                // The link is the first thing in the String
                if (httpIndex != 0) {
                    builder.append("{\"text\":\"")
                            .append(Chat.escapeString(remainingText.substring(0, httpIndex)))
                            .append("\",\"extra\":[");
                    remainingText = remainingText.substring(httpIndex);
                }
                tmp = remainingText.indexOf(' ');
                tmp = tmp == -1 ? remainingText.length() : tmp;
                url = remainingText.substring(0, tmp);
                builder.append("{\"text\":\"").append(Chat.escapeString(url)).append('"');
                Chat.appendClick(builder, Click.ofOpenUrl(url));
                builder.append('}');
                if (httpIndex != 0) {
                    builder.append("]}");
                }
                remainingText = remainingText.substring(url.length());
            } else if (colorIndex != -1 && (httpIndex == -1 || colorIndex < httpIndex)) {
                // The color change is the first thing in the String
                if (colorIndex != 0) {
                    builder.append("{\"text\":\"")
                            .append(Chat.escapeString(remainingText.substring(0, colorIndex)))
                            .append("\",\"extra\":[");
                    ++extraLevel;
                    remainingText = remainingText.substring(colorIndex);
                }
                try {
                    builder.append("{\"text\":\"\",\"color\":\"")
                            .append(Chat.getColorString(remainingText.charAt(1))).append("\",\"extra\":[");
                } catch (final IndexOutOfBoundsException e) {
                    throw new IllegalArgumentException("Malformed input: incomplete color code", e);
                }
                ++extraLevel;
                remainingText = remainingText.substring(2);
            } else {
                // Can't be at the same place: they're both equal to -1. Just append everything left.
                builder.append('"').append(Chat.escapeString(remainingText)).append('"');
                remainingText = "";
            }
            if (!remainingText.isEmpty()) {
                builder.append(',');
            }
        } while (!remainingText.isEmpty());
    } else {
        builder.append("\"text\":\"").append(Chat.escapeString(text)).append('"');
    }
    return extraLevel;
}

---

From source file:fr.ribesg.bukkit.api.chat.Chat.java

private static void appendHover(final StringBuilder builder, final Hover hover, final boolean noText) {
    if (hover != null) {
        if (builder.charAt(builder.length() - 1) != '{') {
            builder.append(',');
        }/*w ww .  j a va  2 s .co m*/
        builder.append("\"hoverEvent\":{\"value\":\"");
        switch (hover.getType()) {
        case SHOW_ACHIEVEMENT:
            builder.append(Chat.getAchievementId(hover.getAchievement()))
                    .append("\",\"action\":\"show_achievement\"}");
            if (noText) {
                // FIXME Append achievement name as "translate" (How?)
                builder.append("\"text\":\"").append(hover.getAchievement().name()).append('"');
            }
            break;
        case SHOW_ITEM:
            Chat.appendItem(builder, hover.getItem());
            builder.append("\",\"action\":\"show_item\"}");
            if (noText) {
                // FIXME Append item name as "translate" (How?)
                builder.append("\"text\":\"").append(hover.getItem().getType()).append('"');
            }
            break;
        case SHOW_TEXT:
            builder.append(Chat.escapeString(StringUtils.join(hover.getText(), '\n')));
            builder.append("\",\"action\":\"show_text\"}");
            break;
        }
    }
}

---

From source file:org.etudes.util.HtmlHelper.java

/**
 * Remove any characters from the data that will cause mysql to reject the record because of encoding errors<br />
 * (java.sql.SQLException: Incorrect string value) if they are present.
 * //  ww w  .  j  ava  2s  .co  m
 * @param data
 *        The html data.
 * @return The data with the bad characters replaced with spaces.
 */
public static String stripBadEncodingCharacters(String data) {
    // Note: these characters become two characters in the String - the first is 56256 0xDBC0 or 55304 0xD808 and the second varies, but is 56xxx

    if (data == null)
        return data;

    // quick check for any strange characters
    if ((data.indexOf(56256) == -1) && (data.indexOf(55304) == -1))
        return data;

    StringBuilder buf = new StringBuilder(data);
    int len = buf.length() - 1;
    for (int i = 0; i < len; i++) {
        char c = buf.charAt(i);
        if ((c == 56256) || (c == 55304)) {
            buf.setCharAt(i, ' ');
            i++;
            buf.setCharAt(i, ' ');
        }
    }

    return buf.toString();
}

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From source file:Main.java

/**
 * Returns a valid Java name from an XML Name.
 *
 * @param name//  w  w w.  java 2s  .  c  om
 * @param isUpperCase
 * @return a valid Java name from an XML Name
 */
public static String getJavaNameFromXMLName(String name, boolean isUpperCase) {
    List<String> parsedName = parseName(name, '_');
    StringBuilder result = new StringBuilder(64 * parsedName.size());
    for (String nameComponent : parsedName) {
        if (nameComponent.length() > 0) {
            if (result.length() > 0 || isUpperCase) {
                result.append(Character.toUpperCase(nameComponent.charAt(0)));
                result.append(nameComponent.substring(1));
            } else {
                result.append(nameComponent);
            }
        }
    }

    if (result.length() == 0) {
        return "_";
    }
    if (Character.isJavaIdentifierStart(result.charAt(0))) {
        return isUpperCase ? result.toString() : decapitalizeName(result.toString());
    }
    return "_" + result;
}

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