HADOOP-9897. Merging change r1532880 from trunk to branch-2.
git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1532883 13f79535-47bb-0310-9956-ffa450edef68
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@ -70,6 +70,9 @@ Release 2.3.0 - UNRELEASED
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HADOOP-9494. Excluded auto-generated and examples code from clover reports
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(Andrey Klochkov via jeagles)
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HADOOP-9897. Add method to get path start position without drive specifier in
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o.a.h.fs.Path. (Binglin Chang via cnauroth)
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OPTIMIZATIONS
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HADOOP-9748. Reduce blocking on UGI.ensureInitialized (daryn)
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@ -218,10 +218,13 @@ public class Path implements Comparable {
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*/
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public static Path mergePaths(Path path1, Path path2) {
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String path2Str = path2.toUri().getPath();
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if(hasWindowsDrive(path2Str)) {
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path2Str = path2Str.substring(path2Str.indexOf(':')+1);
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}
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return new Path(path1 + path2Str);
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path2Str = path2Str.substring(startPositionWithoutWindowsDrive(path2Str));
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// Add path components explicitly, because simply concatenating two path
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// string is not safe, for example:
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// "/" + "/foo" yields "//foo", which will be parsed as authority in Path
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return new Path(path1.toUri().getScheme(),
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path1.toUri().getAuthority(),
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path1.toUri().getPath() + path2Str);
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}
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/**
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@ -247,8 +250,8 @@ public class Path implements Comparable {
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}
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// trim trailing slash from non-root path (ignoring windows drive)
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int minLength = hasWindowsDrive(path) ? 4 : 1;
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if (path.length() > minLength && path.endsWith("/")) {
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int minLength = startPositionWithoutWindowsDrive(path) + 1;
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if (path.length() > minLength && path.endsWith(SEPARATOR)) {
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path = path.substring(0, path.length()-1);
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}
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@ -259,6 +262,14 @@ public class Path implements Comparable {
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return (WINDOWS && hasDriveLetterSpecifier.matcher(path).find());
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}
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private static int startPositionWithoutWindowsDrive(String path) {
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if (hasWindowsDrive(path)) {
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return path.charAt(0) == SEPARATOR_CHAR ? 3 : 2;
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} else {
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return 0;
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}
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}
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/**
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* Determine whether a given path string represents an absolute path on
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* Windows. e.g. "C:/a/b" is an absolute path. "C:a/b" is not.
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@ -270,13 +281,11 @@ public class Path implements Comparable {
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*/
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public static boolean isWindowsAbsolutePath(final String pathString,
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final boolean slashed) {
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int start = (slashed ? 1 : 0);
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return
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hasWindowsDrive(pathString) &&
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pathString.length() >= (start + 3) &&
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((pathString.charAt(start + 2) == SEPARATOR_CHAR) ||
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(pathString.charAt(start + 2) == '\\'));
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int start = startPositionWithoutWindowsDrive(pathString);
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return start > 0
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&& pathString.length() > start
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&& ((pathString.charAt(start) == SEPARATOR_CHAR) ||
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(pathString.charAt(start) == '\\'));
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}
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/** Convert this to a URI. */
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@ -300,7 +309,7 @@ public class Path implements Comparable {
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* True if the path component (i.e. directory) of this URI is absolute.
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*/
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public boolean isUriPathAbsolute() {
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int start = hasWindowsDrive(uri.getPath()) ? 3 : 0;
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int start = startPositionWithoutWindowsDrive(uri.getPath());
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return uri.getPath().startsWith(SEPARATOR, start);
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}
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@ -334,7 +343,7 @@ public class Path implements Comparable {
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public Path getParent() {
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String path = uri.getPath();
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int lastSlash = path.lastIndexOf('/');
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int start = hasWindowsDrive(path) ? 3 : 0;
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int start = startPositionWithoutWindowsDrive(path);
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if ((path.length() == start) || // empty path
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(lastSlash == start && path.length() == start+1)) { // at root
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return null;
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@ -343,8 +352,7 @@ public class Path implements Comparable {
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if (lastSlash==-1) {
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parent = CUR_DIR;
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} else {
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int end = hasWindowsDrive(path) ? 3 : 0;
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parent = path.substring(0, lastSlash==end?end+1:lastSlash);
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parent = path.substring(0, lastSlash==start?start+1:lastSlash);
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}
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return new Path(uri.getScheme(), uri.getAuthority(), parent);
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}
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@ -460,6 +460,13 @@ public class TestPath extends TestCase {
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Path.mergePaths(new Path("/C:/foo"),
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new Path("/C:/bar")));
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assertEquals(new Path(Shell.WINDOWS ? "/C:/bar" : "/C:/C:/bar"),
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Path.mergePaths(new Path("/C:/"),
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new Path("/C:/bar")));
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assertEquals(new Path("/bar"),
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Path.mergePaths(new Path("/"), new Path("/bar")));
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assertEquals(new Path("viewfs:///foo/bar"),
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Path.mergePaths(new Path("viewfs:///foo"),
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new Path("file:///bar")));
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@ -468,4 +475,16 @@ public class TestPath extends TestCase {
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Path.mergePaths(new Path("viewfs://vfsauthority/foo"),
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new Path("file://fileauthority/bar")));
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}
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@Test (timeout = 30000)
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public void testIsWindowsAbsolutePath() {
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if (!Shell.WINDOWS) return;
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assertTrue(Path.isWindowsAbsolutePath("C:\\test", false));
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assertTrue(Path.isWindowsAbsolutePath("C:/test", false));
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assertTrue(Path.isWindowsAbsolutePath("/C:/test", true));
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assertFalse(Path.isWindowsAbsolutePath("/test", false));
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assertFalse(Path.isWindowsAbsolutePath("/test", true));
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assertFalse(Path.isWindowsAbsolutePath("C:test", false));
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assertFalse(Path.isWindowsAbsolutePath("/C:test", true));
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}
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}
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