githubFork/gitblit.git - Solinfo Gitblit

Gracefully deal with missing repository in permissions ui (issue 155)

James Moger

2012-11-01 7ba85bfa11c7fcab21ada61650fe30763aafd7b0

commit \| author \| age
24d08f	1	/*
JM	2	* Copyright 2011 gitblit.com.
	3	*
	4	* Licensed under the Apache License, Version 2.0 (the "License");
	5	* you may not use this file except in compliance with the License.
	6	* You may obtain a copy of the License at
	7	*
	8	* http://www.apache.org/licenses/LICENSE-2.0
	9	*
	10	* Unless required by applicable law or agreed to in writing, software
	11	* distributed under the License is distributed on an "AS IS" BASIS,
	12	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	13	* See the License for the specific language governing permissions and
	14	* limitations under the License.
	15	*/
22fc5e	16	package com.gitblit.build;
24d08f	17
JM	18	import java.awt.Dimension;
	19	import java.awt.Image;
	20	import java.awt.image.BufferedImage;
	21	import java.io.File;
	22	import java.io.FileOutputStream;
	23	import java.io.FilenameFilter;
	24	import java.io.IOException;
892570	25	import java.text.MessageFormat;
24d08f	26	import java.util.Iterator;
JM	27
	28	import javax.imageio.ImageIO;
	29	import javax.imageio.ImageReader;
	30	import javax.imageio.stream.ImageInputStream;
	31
	32	import com.beust.jcommander.JCommander;
	33	import com.beust.jcommander.Parameter;
	34	import com.beust.jcommander.ParameterException;
	35	import com.beust.jcommander.Parameters;
	36
892570	37	/**
JM	38	* Generates PNG thumbnails of the PNG images from the specified source folder.
	39	*
	40	* @author James Moger
	41	*
	42	*/
85c2e6	43	public class BuildThumbnails {
24d08f	44
JM	45	public static void main(String[] args) {
	46	Params params = new Params();
	47	JCommander jc = new JCommander(params);
	48	try {
	49	jc.parse(args);
	50	} catch (ParameterException t) {
	51	System.err.println(t.getMessage());
	52	jc.usage();
	53	}
	54	createImageThumbnail(params.sourceFolder, params.destinationFolder, params.maximumDimension);
	55	}
	56
892570	57	/**
JM	58	* Generates thumbnails from all PNG images in the source folder and saves
	59	* them to the destination folder.
	60	*
	61	* @param sourceFolder
	62	* @param destinationFolder
	63	* @param maxDimension
	64	* the maximum height or width of the image.
	65	*/
24d08f	66	public static void createImageThumbnail(String sourceFolder, String destinationFolder,
JM	67	int maxDimension) {
88598b	68	if (maxDimension <= 0) {
24d08f	69	return;
88598b	70	}
24d08f	71	File source = new File(sourceFolder);
JM	72	File destination = new File(destinationFolder);
	73	destination.mkdirs();
	74	File[] sourceFiles = source.listFiles(new FilenameFilter() {
	75	@Override
	76	public boolean accept(File dir, String name) {
	77	return name.toLowerCase().endsWith(".png");
	78	}
	79	});
	80
	81	for (File sourceFile : sourceFiles) {
	82	File destinationFile = new File(destination, sourceFile.getName());
	83	try {
	84	Dimension sz = getImageDimensions(sourceFile);
	85	int w = 0;
	86	int h = 0;
	87	if (sz.width > maxDimension) {
	88	// Scale to Width
	89	w = maxDimension;
	90	float f = maxDimension;
892570	91	// normalize height
JM	92	h = (int) ((f / sz.width) * sz.height);
24d08f	93	} else if (sz.height > maxDimension) {
JM	94	// Scale to Height
	95	h = maxDimension;
	96	float f = maxDimension;
892570	97	// normalize width
JM	98	w = (int) ((f / sz.height) * sz.width);
24d08f	99	}
892570	100	System.out.println(MessageFormat.format(
JM	101	"Generating thumbnail for {0} as ({1,number,#}, {2,number,#})",
	102	sourceFile.getName(), w, h));
24d08f	103	BufferedImage image = ImageIO.read(sourceFile);
JM	104	Image scaledImage = image.getScaledInstance(w, h, BufferedImage.SCALE_SMOOTH);
	105	BufferedImage destImage = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);
	106	destImage.createGraphics().drawImage(scaledImage, 0, 0, null);
	107	FileOutputStream fos = new FileOutputStream(destinationFile);
	108	ImageIO.write(destImage, "png", fos);
	109	fos.flush();
	110	fos.getFD().sync();
	111	fos.close();
	112	} catch (Throwable t) {
	113	t.printStackTrace();
	114	}
	115	}
	116	}
	117
892570	118	/**
JM	119	* Return the dimensions of the specified image file.
	120	*
	121	* @param file
	122	* @return dimensions of the image
	123	* @throws IOException
	124	*/
24d08f	125	public static Dimension getImageDimensions(File file) throws IOException {
JM	126	ImageInputStream in = ImageIO.createImageInputStream(file);
	127	try {
	128	final Iterator<ImageReader> readers = ImageIO.getImageReaders(in);
	129	if (readers.hasNext()) {
	130	ImageReader reader = readers.next();
	131	try {
	132	reader.setInput(in);
	133	return new Dimension(reader.getWidth(0), reader.getHeight(0));
	134	} finally {
	135	reader.dispose();
	136	}
	137	}
	138	} finally {
88598b	139	if (in != null) {
24d08f	140	in.close();
88598b	141	}
24d08f	142	}
JM	143	return null;
	144	}
	145
88598b	146	/**
JM	147	* JCommander Parameters class for BuildThumbnails.
	148	*/
24d08f	149	@Parameters(separators = " ")
JM	150	private static class Params {
	151
	152	@Parameter(names = { "--sourceFolder" }, description = "Source folder for raw images", required = true)
	153	public String sourceFolder;
	154
	155	@Parameter(names = { "--destinationFolder" }, description = "Destination folder for thumbnails", required = true)
	156	public String destinationFolder;
	157
85c2e6	158	@Parameter(names = { "--maximumDimension" }, description = "Maximum width or height for thumbnail", required = true)
24d08f	159	public int maximumDimension;
JM	160
	161	}
	162	}