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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:06:44 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:06:44 +0000 |
commit | ed5640d8b587fbcfed7dd7967f3de04b37a76f26 (patch) | |
tree | 7a5f7c6c9d02226d7471cb3cc8fbbf631b415303 /scripting/java/com/sun/star/script/framework/io/UCBStreamHandler.java | |
parent | Initial commit. (diff) | |
download | libreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.tar.xz libreoffice-ed5640d8b587fbcfed7dd7967f3de04b37a76f26.zip |
Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'scripting/java/com/sun/star/script/framework/io/UCBStreamHandler.java')
-rw-r--r-- | scripting/java/com/sun/star/script/framework/io/UCBStreamHandler.java | 275 |
1 files changed, 275 insertions, 0 deletions
diff --git a/scripting/java/com/sun/star/script/framework/io/UCBStreamHandler.java b/scripting/java/com/sun/star/script/framework/io/UCBStreamHandler.java new file mode 100644 index 000000000..6413745d3 --- /dev/null +++ b/scripting/java/com/sun/star/script/framework/io/UCBStreamHandler.java @@ -0,0 +1,275 @@ +/* + * This file is part of the LibreOffice project. + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * This file incorporates work covered by the following license notice: + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed + * with this work for additional information regarding copyright + * ownership. The ASF licenses this file to you under the Apache + * License, Version 2.0 (the "License"); you may not use this file + * except in compliance with the License. You may obtain a copy of + * the License at http://www.apache.org/licenses/LICENSE-2.0 . + */ + +package com.sun.star.script.framework.io; + +import com.sun.star.io.XInputStream; +import com.sun.star.io.XOutputStream; +import com.sun.star.io.XTruncate; + +import com.sun.star.script.framework.log.LogUtils; +import com.sun.star.script.framework.provider.PathUtils; + +import com.sun.star.ucb.XSimpleFileAccess; + +import com.sun.star.uno.UnoRuntime; + +import java.io.ByteArrayInputStream; +import java.io.IOException; +import java.io.InputStream; +import java.io.OutputStream; + +import java.net.URL; +import java.net.URLConnection; +import java.net.URLStreamHandler; + +import java.util.HashMap; +import java.util.zip.ZipEntry; +import java.util.zip.ZipInputStream; + +public class UCBStreamHandler extends URLStreamHandler { + + public static final String separator = "/ucb/"; + + private final XSimpleFileAccess m_xSimpleFileAccess; + private final HashMap<String, InputStream> m_jarStreamMap = new HashMap<String, InputStream>(12); + private static String m_ucbscheme; + + public UCBStreamHandler(String scheme, XSimpleFileAccess xSFA) { + LogUtils.DEBUG("UCBStreamHandler ctor, scheme = " + scheme); + UCBStreamHandler.m_ucbscheme = scheme; + this.m_xSimpleFileAccess = xSFA; + } + + @Override + public void parseURL(URL url, String spec, int start, int limit) { + + LogUtils.DEBUG("**XUCBStreamHandler, parseURL: " + url + " spec: " + + spec + " start: " + start + " limit: " + limit); + + String file = url.getFile(); + + if (file == null) + file = spec.substring(start, limit); + else + file += spec.substring(start, limit); + + LogUtils.DEBUG("**For scheme = " + m_ucbscheme); + LogUtils.DEBUG("**Setting path = " + file); + setURL(url, m_ucbscheme, null, -1, null, null, file, null, null); + } + + @Override + public URLConnection openConnection(URL u) throws IOException { + return new UCBConnection(u); + } + + private class UCBConnection extends URLConnection { + + public UCBConnection(URL url) { + super(url); + } + + @Override + public void connect() { + } + + @Override + public InputStream getInputStream() throws IOException { + LogUtils.DEBUG("UCBConnectionHandler GetInputStream on " + url); + String sUrl = url.toString(); + + if (sUrl.lastIndexOf(separator) == -1) { + LogUtils.DEBUG("getInputStream straight file load"); + return getFileStreamFromUCB(sUrl); + } else { + String path = sUrl.substring(0, sUrl.lastIndexOf(separator)); + + String file = + sUrl.substring(sUrl.lastIndexOf(separator) + separator.length()); + + LogUtils.DEBUG("getInputStream, load of file from another file eg. " + + file + " from " + path); + + return getUCBStream(file, path); + } + } + @Override + public OutputStream getOutputStream() throws IOException { + LogUtils.DEBUG("UCBConnectionHandler getOutputStream on " + url); + OutputStream os = null; + + try { + String sUrl = url.toString(); + + if (sUrl.lastIndexOf(separator) != -1) { + String path = sUrl.substring(0, sUrl.lastIndexOf(separator)); + + if (m_xSimpleFileAccess.isReadOnly(path)) { + throw new java.io.IOException("File is read only"); + } + + LogUtils.DEBUG("getOutputStream, create o/p stream for file eg. " + + path); + + // we will only deal with simple file write + XOutputStream xos = m_xSimpleFileAccess.openFileWrite(path); + + XTruncate xtrunc = + UnoRuntime.queryInterface(XTruncate.class, xos); + + if (xtrunc != null) { + xtrunc.truncate(); + } + + os = new XOutputStreamWrapper(xos); + } + + if (os == null) { + throw new IOException("Failed to get OutputStream for " + + sUrl); + } + } catch (com.sun.star.ucb.CommandAbortedException cae) { + LogUtils.DEBUG("caught exception: " + cae.toString() + + " getting writable stream from " + url); + IOException newEx = new IOException(cae.getMessage()); + newEx.initCause(cae); + throw newEx; + } catch (com.sun.star.uno.Exception e) { + LogUtils.DEBUG("caught unknown exception: " + e.toString() + + " getting writable stream from " + url); + IOException newEx = new IOException(e.getMessage()); + newEx.initCause(e); + throw newEx; + } + + return os; + } + } + + private InputStream getUCBStream(String file, String path) throws IOException { + + InputStream is = null; + InputStream result = null; + + try { + if (path.endsWith(".jar")) { + is = m_jarStreamMap.get(path); + + if (is == null) { + is = getFileStreamFromUCB(path); + m_jarStreamMap.put(path, is); + } else { + try { + is.reset(); + } catch (IOException e) { + is.close(); + is = getFileStreamFromUCB(path); + m_jarStreamMap.put(path, is); + } + } + + result = getFileStreamFromJarStream(file, is); + } else { + String fileUrl = PathUtils.make_url(path, file); + result = getFileStreamFromUCB(fileUrl); + } + } finally { + if (is != null) { + try { + is.close(); + } catch (IOException ioe) { + LogUtils.DEBUG("Caught exception closing stream: " + + ioe.getMessage()); + } + } + } + + return result; + } + + private InputStream getFileStreamFromJarStream(String file, + InputStream is) throws + IOException { + + ZipInputStream zis = new ZipInputStream(is); + + while (zis.available() != 0) { + ZipEntry entry = zis.getNextEntry(); + + if (entry != null && entry.getName().equals(file)) { + return zis; + } + } + + return null; + } + + private InputStream getFileStreamFromUCB(String path) throws IOException { + + InputStream result = null; + XInputStream xInputStream = null; + + try { + LogUtils.DEBUG("Trying to read from " + path); + xInputStream = m_xSimpleFileAccess.openFileRead(path); + LogUtils.DEBUG("sfa appeared to read file "); + byte[][] inputBytes = new byte[1][]; + + int sz = m_xSimpleFileAccess.getSize(path); + + // TODO don't depend on result of available() or size() + // just read stream 'till complete + if (sz == 0 && xInputStream.available() > 0) { + sz = xInputStream.available(); + } + + LogUtils.DEBUG("size of file " + path + " is " + sz); + LogUtils.DEBUG("available = " + xInputStream.available()); + inputBytes[0] = new byte[sz]; + + int ln = xInputStream.readBytes(inputBytes, sz); + + if (ln != sz) { + throw new IOException( + "Failed to read " + sz + " bytes from XInputStream"); + } + + result = new ByteArrayInputStream(inputBytes[0]); + } catch (com.sun.star.io.IOException ex1) { + IOException ex2 = new IOException(); + ex2.initCause(ex1); + throw ex2; + } catch (com.sun.star.uno.Exception ex1) { + IOException ex2 = new IOException(); + ex2.initCause(ex1); + throw ex2; + } finally { + if (xInputStream != null) { + try { + xInputStream.closeInput(); + } catch (Exception e2) { + LogUtils.DEBUG("Error closing XInputStream: " + + e2.getMessage()); + } + } + } + + return result; + } +} |