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Diffstat (limited to 'openjdk/sun/nio/fs/WindowsUriSupport.java')
| -rw-r--r-- | openjdk/sun/nio/fs/WindowsUriSupport.java | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/openjdk/sun/nio/fs/WindowsUriSupport.java b/openjdk/sun/nio/fs/WindowsUriSupport.java new file mode 100644 index 00000000..5748bbb0 --- /dev/null +++ b/openjdk/sun/nio/fs/WindowsUriSupport.java @@ -0,0 +1,167 @@ +/* + * Copyright (c) 2008, 2009, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. Oracle designates this + * particular file as subject to the "Classpath" exception as provided + * by Oracle in the LICENSE file that accompanied this code. + * + * This code is distributed in the hope that it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * version 2 for more details (a copy is included in the LICENSE file that + * accompanied this code). + * + * You should have received a copy of the GNU General Public License version + * 2 along with this work; if not, write to the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ + +package sun.nio.fs; + +import java.net.URI; +import java.net.URISyntaxException; + +/** + * Utility methods to convert between Path and URIs. + */ + +class WindowsUriSupport { + private WindowsUriSupport() { + } + + // suffix for IPv6 literal address + private static final String IPV6_LITERAL_SUFFIX = ".ipv6-literal.net"; + + /** + * Returns URI to represent the given (absolute) path + */ + private static URI toUri(String path, boolean isUnc, boolean addSlash) { + String uriHost; + String uriPath; + + if (isUnc) { + int slash = path.indexOf('\\', 2); + uriHost = path.substring(2, slash); + uriPath = path.substring(slash).replace('\\', '/'); + + // handle IPv6 literal addresses + // 1. drop .ivp6-literal.net + // 2. replace "-" with ":" + // 3. replace "s" with "%" (zone/scopeID delimiter) + if (uriHost.endsWith(IPV6_LITERAL_SUFFIX)) { + uriHost = uriHost + .substring(0, uriHost.length() - IPV6_LITERAL_SUFFIX.length()) + .replace('-', ':') + .replace('s', '%'); + } + } else { + uriHost = ""; + uriPath = "/" + path.replace('\\', '/'); + } + + // append slash if known to be directory + if (addSlash) + uriPath += "/"; + + // return file:///C:/My%20Documents or file://server/share/foo + try { + return new URI("file", uriHost, uriPath, null); + } catch (URISyntaxException x) { + if (!isUnc) + throw new AssertionError(x); + } + + // if we get here it means we've got a UNC with reserved characters + // in the server name. The authority component cannot contain escaped + // octets so fallback to encoding the server name into the URI path + // component. + uriPath = "//" + path.replace('\\', '/'); + if (addSlash) + uriPath += "/"; + try { + return new URI("file", null, uriPath, null); + } catch (URISyntaxException x) { + throw new AssertionError(x); + } + } + + /** + * Converts given Path to a URI + */ + static URI toUri(WindowsPath path) { + path = path.toAbsolutePath(); + String s = path.toString(); + + // trailing slash will be added if file is a directory. Skip check if + // already have trailing space + boolean addSlash = false; + if (!s.endsWith("\\")) { + try { + addSlash = WindowsFileAttributes.get(path, true).isDirectory(); + } catch (WindowsException x) { + } + } + + return toUri(s, path.isUnc(), addSlash); + } + + /** + * Converts given URI to a Path + */ + static WindowsPath fromUri(WindowsFileSystem fs, URI uri) { + if (!uri.isAbsolute()) + throw new IllegalArgumentException("URI is not absolute"); + if (uri.isOpaque()) + throw new IllegalArgumentException("URI is not hierarchical"); + String scheme = uri.getScheme(); + if ((scheme == null) || !scheme.equalsIgnoreCase("file")) + throw new IllegalArgumentException("URI scheme is not \"file\""); + if (uri.getFragment() != null) + throw new IllegalArgumentException("URI has a fragment component"); + if (uri.getQuery() != null) + throw new IllegalArgumentException("URI has a query component"); + String path = uri.getPath(); + if (path.equals("")) + throw new IllegalArgumentException("URI path component is empty"); + + // UNC + String auth = uri.getAuthority(); + if (auth != null && !auth.equals("")) { + String host = uri.getHost(); + if (host == null) + throw new IllegalArgumentException("URI authority component has undefined host"); + if (uri.getUserInfo() != null) + throw new IllegalArgumentException("URI authority component has user-info"); + if (uri.getPort() != -1) + throw new IllegalArgumentException("URI authority component has port number"); + + // IPv6 literal + // 1. drop enclosing brackets + // 2. replace ":" with "-" + // 3. replace "%" with "s" (zone/scopeID delimiter) + // 4. Append .ivp6-literal.net + if (host.startsWith("[")) { + host = host.substring(1, host.length()-1) + .replace(':', '-') + .replace('%', 's'); + host += IPV6_LITERAL_SUFFIX; + } + + // reconstitute the UNC + path = "\\\\" + host + path; + } else { + if ((path.length() > 2) && (path.charAt(2) == ':')) { + // "/c:/foo" --> "c:/foo" + path = path.substring(1); + } + } + return WindowsPath.parse(fs, path); + } +} |