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Subject [Bug 54302] New: more efficient (and shorter) method call in FTPTaskMirrorImpl.FTPDirectoryScanner.AntFTPFile.getFastRelativePath
Date Fri, 14 Dec 2012 21:10:45 GMT

            Bug ID: 54302
           Summary: more efficient (and shorter) method call in
           Product: Ant
           Version: 1.8.4
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Core
    Classification: Unclassified

Created attachment 29763

The problem appears in version 1.8.4 and in revision 1421898.  I
attached a one-line patch that fixes it.

In method
the call "absPath.indexOf(rootPath + task.getSeparator()) == 0" should
be "absPath.startsWith(rootPath + task.getSeparator())".  The intent
of the call is more explicit with "startsWith" than with "indexOf(..)==0".
"startsWith" is also more efficient than "indexOf", because
"startsWith" tries to match only the start of the string, while
"indexOf" searches until the first occurrence.

There are many calls to "String.startsWith" in Ant (just like in the
proposed patch), for example, in methods "AntlibDefinition.setURI",
"AntClassLoader.isParentFirst", "ComponentHelper.checkNamespace",
"Execute.getVMSLogicals", "ExecTask.isPath", "Jar.writeIndexLikeList",
"Definer.makeResourceFromURI", "PathTokenizer.nextToken", etc.

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