mirror of https://github.com/octoleo/plantuml.git
187 lines
5.3 KiB
Java
187 lines
5.3 KiB
Java
/* ========================================================================
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* PlantUML : a free UML diagram generator
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* ========================================================================
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*
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* (C) Copyright 2009-2017, Arnaud Roques
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*
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* Project Info: http://plantuml.com
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*
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* If you like this project or if you find it useful, you can support us at:
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*
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* http://plantuml.com/patreon (only 1$ per month!)
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* http://plantuml.com/paypal
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*
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* This file is part of PlantUML.
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*
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* PlantUML is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* PlantUML distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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* License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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* USA.
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*
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*
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* Original Author: Arnaud Roques
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*
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*
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*/
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package net.sourceforge.plantuml.preproc;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileReader;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.InputStreamReader;
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import java.net.URL;
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import net.sourceforge.plantuml.CharSequence2;
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import net.sourceforge.plantuml.Log;
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import net.sourceforge.plantuml.utils.StartUtils;
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public class StartDiagramExtractReader implements ReadLine {
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private final ReadLine raw;
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private boolean finished = false;
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public StartDiagramExtractReader(CharSequence2 s, File f, String uid, String charset) {
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this(getReadLine(s, f, charset), uid);
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}
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public StartDiagramExtractReader(CharSequence2 s, URL url, String uid, String charset) {
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this(getReadLine(s, url, charset), uid);
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}
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public StartDiagramExtractReader(CharSequence2 s, InputStream is, String desc) {
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this(getReadLine(s, is, desc), null);
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}
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private StartDiagramExtractReader(ReadLine raw, String suf) {
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int bloc = 0;
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String uid = null;
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if (suf != null && suf.matches("\\d+")) {
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bloc = Integer.parseInt(suf);
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} else {
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uid = suf;
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}
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if (bloc < 0) {
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bloc = 0;
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}
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this.raw = raw;
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CharSequence2 s = null;
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try {
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while ((s = raw.readLine()) != null) {
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if (StartUtils.isArobaseStartDiagram(s) && checkUid(uid, s)) {
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if (bloc == 0) {
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return;
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}
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bloc--;
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}
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}
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} catch (IOException e) {
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e.printStackTrace();
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Log.error("Error " + e);
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}
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finished = true;
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}
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private boolean checkUid(String uid, CharSequence2 s) {
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if (uid == null) {
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return true;
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}
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if (s.toString().matches(".*id=" + uid + "\\W.*")) {
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return true;
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}
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return false;
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}
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private static ReadLine getReadLine(CharSequence2 s, File f, String charset) {
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try {
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if (charset == null) {
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Log.info("Using default charset");
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return new UncommentReadLine(ReadLineReader.create(new FileReader(f), f.getAbsolutePath()));
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}
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Log.info("Using charset " + charset);
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return new UncommentReadLine(ReadLineReader.create(new InputStreamReader(new FileInputStream(f), charset),
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f.getAbsolutePath()));
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} catch (IOException e) {
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return new ReadLineSimple(s, e.toString());
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}
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}
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private static ReadLine getReadLine(CharSequence2 s, InputStream is, String description) {
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return new UncommentReadLine(ReadLineReader.create(new InputStreamReader(is), description));
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}
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private static ReadLine getReadLine(CharSequence2 s, URL url, String charset) {
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try {
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if (charset == null) {
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Log.info("Using default charset");
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return new UncommentReadLine(ReadLineReader.create(new InputStreamReader(url.openStream()),
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url.toString()));
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}
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Log.info("Using charset " + charset);
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return new UncommentReadLine(ReadLineReader.create(new InputStreamReader(url.openStream(), charset),
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url.toString()));
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} catch (IOException e) {
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return new ReadLineSimple(s, e.toString());
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}
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}
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static public boolean containsStartDiagram(CharSequence2 s, File f, String charset) throws IOException {
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final ReadLine r = getReadLine(s, f, charset);
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return containsStartDiagram(r);
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}
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static public boolean containsStartDiagram(CharSequence2 s, URL url, String charset) throws IOException {
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final ReadLine r = getReadLine(s, url, charset);
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return containsStartDiagram(r);
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}
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static public boolean containsStartDiagram(CharSequence2 s, InputStream is, String description) throws IOException {
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final ReadLine r = getReadLine(s, is, description);
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return containsStartDiagram(r);
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}
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private static boolean containsStartDiagram(final ReadLine r) throws IOException {
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try {
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CharSequence2 s = null;
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while ((s = r.readLine()) != null) {
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if (StartUtils.isArobaseStartDiagram(s)) {
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return true;
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}
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}
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} finally {
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if (r != null) {
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r.close();
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}
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}
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return false;
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}
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public CharSequence2 readLine() throws IOException {
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if (finished) {
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return null;
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}
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final CharSequence2 result = raw.readLine();
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if (result != null && StartUtils.isArobaseEndDiagram(result)) {
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finished = true;
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return null;
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}
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return result;
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}
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public void close() throws IOException {
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raw.close();
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}
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}
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