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package com.vaadin.buildhelpers;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.CommandLineParser;
import org.apache.commons.cli.HelpFormatter;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;
import org.apache.commons.cli.PosixParser;
import com.vaadin.sass.ScssStylesheet;
/**
* Helper to combine css divided into separate per component dirs into one to
* optimize http requests.
*/
public class CompileTheme {
/**
* @param args
* @throws IOException
* @throws ParseException
*/
public static void main(String[] args) throws IOException, ParseException {
Options options = new Options();
options.addOption("t", "theme", true, "the theme to compile");
options.addOption("v", "theme-version", true,
"the version to add to the compiled theme");
options.addOption("f", "theme-folder", true,
"the folder containing the theme");
CommandLineParser parser = new PosixParser();
CommandLine params = parser.parse(options, args);
if (!params.hasOption("theme") || !params.hasOption("theme-folder")) {
// automatically generate the help statement
HelpFormatter formatter = new HelpFormatter();
formatter.printHelp(CompileTheme.class.getName(), options);
return;
}
String themeName = params.getOptionValue("theme");
String themeFolder = params.getOptionValue("theme-folder");
String themeVersion = params.getOptionValue("theme-version");
// Regular theme
try {
processSassTheme(themeFolder, themeName, "styles", themeVersion);
System.out.println("Compiling theme " + themeName
+ " styles successful");
} catch (Exception e) {
System.err.println("Compiling theme " + themeName
+ " styles failed");
e.printStackTrace();
}
// Legacy theme w/o .themename{} wrapping
try {
processSassTheme(themeFolder, themeName, "legacy-styles",
themeVersion);
System.out.println("Compiling theme " + themeName
+ " legacy-styles successful");
} catch (Exception e) {
System.err.println("Compiling theme " + themeName
+ " legacy-styles failed");
e.printStackTrace();
}
}
private static void processSassTheme(String themeFolder, String themeName,
String variant, String version) throws Exception {
StringBuffer cssHeader = new StringBuffer();
version = version.replaceAll("\\.", "_");
cssHeader.append(".v-theme-version:after {content:\"" + version
+ "\";}\n");
cssHeader.append(".v-theme-version-" + version + " {display: none;}\n");
String stylesCssDir = themeFolder + File.separator + themeName
+ File.separator;
String stylesCssName = stylesCssDir + variant + ".css";
// Process as SASS file
String sassFile = stylesCssDir + variant + ".scss";
ScssStylesheet scss = ScssStylesheet.get(sassFile);
if (scss == null) {
throw new IllegalArgumentException("SASS file: " + sassFile
+ " not found");
}
scss.compile();
BufferedWriter out = new BufferedWriter(new FileWriter(stylesCssName));
out.write(cssHeader.toString());
out.write(scss.toString());
out.close();
System.out.println("Compiled CSS to " + stylesCssName + " ("
+ scss.toString().length() + " bytes)");
createSprites(themeFolder, themeName);
File oldCss = new File(stylesCssName);
File newCss = new File(stylesCssDir + variant + "-sprite.css");
if (newCss.exists()) {
// Theme contained sprites. Renamed "styles-sprite.css" ->
// "styles.css"
oldCss.delete();
boolean ok = newCss.renameTo(oldCss);
if (!ok) {
throw new RuntimeException("Rename " + newCss + " -> " + oldCss
+ " failed");
}
}
}
private static void createSprites(String themeFolder, String themeName)
throws FileNotFoundException, IOException {
try {
// Try loading the class separately from using it to avoid
// hiding other classpath issues
Class<?> smartSpritesClass = org.carrot2.labs.smartsprites.SmartSprites.class;
} catch (NoClassDefFoundError e) {
System.err
.println("Could not find smartsprites. No sprites were generated. The theme should still work.");
return;
}
String[] parameters = new String[] { "--sprite-png-depth", "AUTO",
"--css-file-suffix", "-sprite", "--css-file-encoding", "UTF-8",
"--root-dir-path", themeFolder + File.separator + themeName,
"--log-level", "WARN" };
org.carrot2.labs.smartsprites.SmartSprites.main(parameters);
System.out.println("Generated sprites");
}
}
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