Example usage for com.google.common.io CharSource concat

Introduction

In this page you can find the example usage for com.google.common.io CharSource concat.

Prototype

public static CharSource concat(CharSource... sources)

Source Link

Document

Concatenates multiple CharSource instances into a single source.

Usage

From source file:org.glowroot.local.ui.TraceExportHttpService.java

private static CharSource render(TraceExport traceExport) throws IOException {
    String htmlStartTag = "<html>";
    String exportCssPlaceholder = "<link rel=\"stylesheet\" href=\"styles/export.css\">";
    String exportJsPlaceholder = "<script src=\"scripts/export.js\"></script>";
    String tracePlaceholder = "<script type=\"text/json\" id=\"traceJson\"></script>";
    String entriesPlaceholder = "<script type=\"text/json\" id=\"entriesJson\"></script>";
    String profilePlaceholder = "<script type=\"text/json\" id=\"profileJson\"></script>";

    String templateContent = asCharSource("trace-export.html").read();
    Pattern pattern = Pattern
            .compile("(" + htmlStartTag + "|" + exportCssPlaceholder + "|" + exportJsPlaceholder + "|"
                    + tracePlaceholder + "|" + entriesPlaceholder + "|" + profilePlaceholder + ")");
    Matcher matcher = pattern.matcher(templateContent);
    int curr = 0;
    List<CharSource> charSources = Lists.newArrayList();
    while (matcher.find()) {
        charSources.add(CharSource.wrap(templateContent.substring(curr, matcher.start())));
        curr = matcher.end();//w  w  w  .j  a va 2 s.  c  o  m
        String match = matcher.group();
        if (match.equals(htmlStartTag)) {
            // Need to add "Mark of the Web" for IE, otherwise IE won't run javascript
            // see http://msdn.microsoft.com/en-us/library/ms537628(v=vs.85).aspx
            charSources.add(CharSource.wrap("<!-- saved from url=(0014)about:internet -->\r\n<html>"));
        } else if (match.equals(exportCssPlaceholder)) {
            charSources.add(CharSource.wrap("<style>"));
            charSources.add(asCharSource("styles/export.css"));
            charSources.add(CharSource.wrap("</style>"));
        } else if (match.equals(exportJsPlaceholder)) {
            charSources.add(CharSource.wrap("<script>"));
            charSources.add(asCharSource("scripts/export.js"));
            charSources.add(CharSource.wrap("</script>"));
        } else if (match.equals(tracePlaceholder)) {
            charSources.add(CharSource.wrap("<script type=\"text/json\" id=\"traceJson\">"));
            charSources.add(CharSource.wrap(traceExport.traceJson()));
            charSources.add(CharSource.wrap("</script>"));
        } else if (match.equals(entriesPlaceholder)) {
            charSources.add(CharSource.wrap("<script type=\"text/json\" id=\"entriesJson\">"));
            CharSource entries = traceExport.entries();
            if (entries != null) {
                charSources.add(entries);
            }
            charSources.add(CharSource.wrap("</script>"));
        } else if (match.equals(profilePlaceholder)) {
            charSources.add(CharSource.wrap("<script type=\"text/json\" id=\"profileJson\">"));
            CharSource profile = traceExport.profile();
            if (profile != null) {
                charSources.add(profile);
            }
            charSources.add(CharSource.wrap("</script>"));
        } else {
            logger.error("unexpected match: {}", match);
        }
    }
    charSources.add(CharSource.wrap(templateContent.substring(curr)));
    return CharSource.concat(charSources);
}

From source file:org.apache.aurora.common.args.apt.Configuration.java

private static Configuration load(int nextIndex, List<URL> configs) throws ConfigurationException, IOException {
    CharSource input = CharSource.concat(Iterables.transform(configs, URL_TO_SOURCE));
    try (Reader reader = input.openStream()) {
        return CharStreams.readLines(reader, new ConfigurationParser(nextIndex));
    }//w  w  w  . jav a  2s  . c  o m
}