Example usage for com.google.common.html.types SafeHtmlBuilder escapeAndAppendContent

Introduction

In this page you can find the example usage for com.google.common.html.types SafeHtmlBuilder escapeAndAppendContent.

Prototype

public SafeHtmlBuilder escapeAndAppendContent(String text) 

Source Link

Document

HTML-escapes and appends text to this element's content.

Usage

From source file:com.google.devtools.kythe.doc.DocUnbracketer.java

/**
 * Unbracket {@link printable}, following the rules for text in {@link Printable} messages.
 *
 * @param makeLink if provided, this function will be used to generate link URIs from semantic
 *     node tickets. It may return null if there is no available URI.
 * @param printable the document text to unbracket.
 *///ww w. j  av a 2 s  .c o m
public static SafeHtml unbracket(Function<String, SafeUrl> makeLink, Printable printable) {
    int size = printable.getRawText().length();
    String raw = printable.getRawText();
    SafeHtmlBuilder builder = new SafeHtmlBuilder("pre");
    SafeHtmlBuilder linkBuilder = null; // is non-null if we are inside a link
    boolean linkTextIsEmpty = true;
    int linkNumber = 0; // is equal to the number of link-opening [s we've seen so far
    Stack<SafeUrl> links = new Stack<SafeUrl>(); // is always as high as the nesting level, for well-formed documents

    for (int c = 0; c < size; ++c) {
        char ch = raw.charAt(c);
        if (ch == '\\' && c + 1 < size && ALLOWED_ESCAPES.indexOf(raw.charAt(c + 1)) != -1) {
            if (linkBuilder != null) {
                linkBuilder = linkBuilder.escapeAndAppendContent(raw.substring(c + 1, c + 2));
                linkTextIsEmpty = false;
            } else {
                builder = builder.escapeAndAppendContent(raw.substring(c + 1, c + 2));
            }
            ++c;
        } else if (ch == '[') {
            if (linkBuilder != null && !linkTextIsEmpty) {
                builder = builder.appendContent(linkBuilder.build());
            }
            linkBuilder = null;
            linkTextIsEmpty = true;
            SafeUrl link = null;
            if (linkNumber < printable.getLinkCount() && makeLink != null) {
                // Pick the first definition ticket that will provide a location for a link.
                // (We expect to see only one definition ticket per link in general.)
                for (String definition : printable.getLink(linkNumber).getDefinitionList()) {
                    link = makeLink.apply(definition);
                    if (link != null) {
                        break;
                    }
                }
                ++linkNumber;
            }
            links.push(link);
            if (link != null) {
                linkBuilder = new SafeHtmlBuilder("a").setHref(link);
                linkTextIsEmpty = true;
            }
        } else if (ch == ']') {
            if (linkBuilder != null) {
                if (!linkTextIsEmpty) {
                    builder = builder.appendContent(linkBuilder.build());
                }
                linkBuilder = null;
            }
            if (!links.empty()) {
                links.pop();
                if (!links.empty() && links.peek() != null) {
                    linkBuilder = new SafeHtmlBuilder("a").setHref(links.peek());
                    linkTextIsEmpty = true;
                }
            }
        } else if (linkBuilder != null) {
            linkBuilder = linkBuilder.escapeAndAppendContent(raw.substring(c, c + 1));
            linkTextIsEmpty = false;
        } else {
            builder = builder.escapeAndAppendContent(raw.substring(c, c + 1));
        }
    }
    if (linkBuilder != null) {
        builder = builder.appendContent(linkBuilder.build());
    }
    return builder.build();
}

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