Class FileUtils
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Field Summary
Modifier and TypeFieldDescriptionstatic final long
The granularity of timestamps under FAT.static final long
The granularity of timestamps under the NT File System.static final long
The granularity of timestamps under Unix. -
Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptionboolean
Are the two File instances pointing to the same object on the file system?static void
close
(InputStream device) Close a stream without throwing any exception if something went wrong.static void
close
(OutputStream device) Close a stream without throwing any exception if something went wrong.static void
Close a Reader without throwing any exception if something went wrong.static void
Close a Writer without throwing any exception if something went wrong.static void
close
(AutoCloseable ac) Close anAutoCloseable
without throwing any exception if something went wrong.static void
close
(URLConnection conn) Closes an URLConnection if its concrete implementation provides a way to close it that Ant knows of.static void
Close a Channel without throwing any exception if something went wrong.boolean
contentEquals
(File f1, File f2) Compares the contents of two files.boolean
contentEquals
(File f1, File f2, boolean textfile) Compares the contents of two files.void
Convenience method to copy a file from a source to a destination.void
copyFile
(File sourceFile, File destFile, FilterSetCollection filters) Convenience method to copy a file from a source to a destination specifying if token filtering must be used.void
copyFile
(File sourceFile, File destFile, FilterSetCollection filters, boolean overwrite) Convenience method to copy a file from a source to a destination specifying if token filtering must be used and if source files may overwrite newer destination files.void
copyFile
(File sourceFile, File destFile, FilterSetCollection filters, boolean overwrite, boolean preserveLastModified) Convenience method to copy a file from a source to a destination specifying if token filtering must be used, if source files may overwrite newer destination files and the last modified time ofdestFile
file should be made equal to the last modified time ofsourceFile
.void
copyFile
(File sourceFile, File destFile, FilterSetCollection filters, boolean overwrite, boolean preserveLastModified, String encoding) Convenience method to copy a file from a source to a destination specifying if token filtering must be used, if source files may overwrite newer destination files, the last modified time ofdestFile
file should be made equal to the last modified time ofsourceFile
and which character encoding to assume.void
copyFile
(File sourceFile, File destFile, FilterSetCollection filters, Vector<FilterChain> filterChains, boolean overwrite, boolean preserveLastModified, boolean append, String inputEncoding, String outputEncoding, Project project) Convenience method to copy a file from a source to a destination specifying if token filtering must be used, if filter chains must be used, if source files may overwrite newer destination files and the last modified time ofdestFile
file should be made equal to the last modified time ofsourceFile
.void
copyFile
(File sourceFile, File destFile, FilterSetCollection filters, Vector<FilterChain> filterChains, boolean overwrite, boolean preserveLastModified, boolean append, String inputEncoding, String outputEncoding, Project project, boolean force) Convenience method to copy a file from a source to a destination specifying if token filtering must be used, if filter chains must be used, if source files may overwrite newer destination files and the last modified time ofdestFile
file should be made equal to the last modified time ofsourceFile
.void
copyFile
(File sourceFile, File destFile, FilterSetCollection filters, Vector<FilterChain> filterChains, boolean overwrite, boolean preserveLastModified, String inputEncoding, String outputEncoding, Project project) Convenience method to copy a file from a source to a destination specifying if token filtering must be used, if filter chains must be used, if source files may overwrite newer destination files and the last modified time ofdestFile
file should be made equal to the last modified time ofsourceFile
.void
copyFile
(File sourceFile, File destFile, FilterSetCollection filters, Vector<FilterChain> filterChains, boolean overwrite, boolean preserveLastModified, String encoding, Project project) Convenience method to copy a file from a source to a destination specifying if token filtering must be used, if filter chains must be used, if source files may overwrite newer destination files and the last modified time ofdestFile
file should be made equal to the last modified time ofsourceFile
.void
Convenience method to copy a file from a source to a destination.void
copyFile
(String sourceFile, String destFile, FilterSetCollection filters) Convenience method to copy a file from a source to a destination specifying if token filtering must be used.void
copyFile
(String sourceFile, String destFile, FilterSetCollection filters, boolean overwrite) Convenience method to copy a file from a source to a destination specifying if token filtering must be used and if source files may overwrite newer destination files.void
copyFile
(String sourceFile, String destFile, FilterSetCollection filters, boolean overwrite, boolean preserveLastModified) Convenience method to copy a file from a source to a destination specifying if token filtering must be used, if source files may overwrite newer destination files and the last modified time ofdestFile
file should be made equal to the last modified time ofsourceFile
.void
copyFile
(String sourceFile, String destFile, FilterSetCollection filters, boolean overwrite, boolean preserveLastModified, String encoding) Convenience method to copy a file from a source to a destination specifying if token filtering must be used, if source files may overwrite newer destination files and the last modified time ofdestFile
file should be made equal to the last modified time ofsourceFile
.void
copyFile
(String sourceFile, String destFile, FilterSetCollection filters, Vector<FilterChain> filterChains, boolean overwrite, boolean preserveLastModified, String inputEncoding, String outputEncoding, Project project) Convenience method to copy a file from a source to a destination specifying if token filtering must be used, if filter chains must be used, if source files may overwrite newer destination files and the last modified time ofdestFile
file should be made equal to the last modified time ofsourceFile
.void
copyFile
(String sourceFile, String destFile, FilterSetCollection filters, Vector<FilterChain> filterChains, boolean overwrite, boolean preserveLastModified, String encoding, Project project) Convenience method to copy a file from a source to a destination specifying if token filtering must be used, if filter chains must be used, if source files may overwrite newer destination files and the last modified time ofdestFile
file should be made equal to the last modified time ofsourceFile
.boolean
This was originally an emulation of File.createNewFile for JDK 1.1, but it is now implemented using that method (Ant 1.6.3 onwards).boolean
createNewFile
(File f, boolean mkdirs) Create a new file, optionally creating parent directories.createTempFile
(String prefix, String suffix, File parentDir) Deprecated.since ant 1.7.1 use createTempFile(Project, String, String, File, boolean, boolean) instead.createTempFile
(String prefix, String suffix, File parentDir, boolean deleteOnExit) Deprecated.since ant 1.7.1 use createTempFile(Project, String, String, File, boolean, boolean) instead.createTempFile
(String prefix, String suffix, File parentDir, boolean deleteOnExit, boolean createFile) Deprecated.since Ant 1.10.8 use createTempFile(Project, String, String, File, boolean, boolean) instead.createTempFile
(Project project, String prefix, String suffix, File parentDir, boolean deleteOnExit, boolean createFile) Create a temporary file in a given directory.static void
Delete the file withFile.delete()
if the argument is not null.String[]
Dissect the specified absolute path.boolean
fileNameEquals
(File f1, File f2) Compares two filenames.Constructs a file path from afile:
URI.Get the default encoding.long
Get the granularity of file timestamps.getFileURL
(File file) Get the URL for a file taking into account # characters.static FileUtils
Method to retrieve The FileUtils, which is shared by all users of this method.Deprecated.since 1.7.static String
Gets path from aList
ofString
s.static String
Gets path from aList
ofString
s.static String[]
getPathStack
(String path) Gets all names of the path as an array ofString
s.static String
getRelativePath
(File fromFile, File toFile) Calculates the relative path between two files.boolean
hasErrorInCase
(File localFile) test whether a file or directory exists, with an error in the upper/lower case spelling of the name.static boolean
isAbsolutePath
(String filename) Verifies that the specified filename represents an absolute path.Tries to determine the case sensitivity of the filesystem corresponding to thepath
.static boolean
isContextRelativePath
(String filename) On DOS and NetWare, the evaluation of certain file specifications is context-dependent.boolean
isLeadingPath
(File leading, File path) Learn whether one path "leads" another.boolean
isLeadingPath
(File leading, File path, boolean resolveSymlinks) Learn whether one path "leads" another.boolean
isSymbolicLink
(File parent, String name) Deprecated.useFiles.isSymbolicLink(Path)
insteadboolean
isUpToDate
(long sourceTime, long destTime) Compare two timestamps for being up to date using the current granularity.boolean
isUpToDate
(long sourceTime, long destTime, long granularity) Compare two timestamps for being up to date using the specified granularity.boolean
isUpToDate
(File source, File dest) Returns true if the source is older than the dest.boolean
isUpToDate
(File source, File dest, long granularity) Returns true if the source is older than the dest.static FileUtils
Deprecated.since 1.7.static OutputStream
newOutputStream
(Path path, boolean append) Opens a new OutputStream for the given Path."Normalize" the given absolute path.static String
Read from reader till EOF.static String
Read from reader till EOF.removeLeadingPath
(File leading, File path) Removes a leading path from a second path.void
Renames a file, even if that involves crossing file system boundaries.void
Renames a file, even if that involves crossing file system boundaries.resolveFile
(File file, String filename) Interpret the filename as a file relative to the given file unless the filename already represents an absolute filename.static String
safeReadFully
(Reader reader) Safe read fully - do not return a null for an empty reader.void
setFileLastModified
(File file, long time) Calls File.setLastModified(long time).Constructs afile:
URI that represents the external form of the given pathname.Returns a VMS String representation of aFile
object.static String
translatePath
(String toProcess) Translate a path into its native (platform specific) format.boolean
Accommodate Windows bug encountered in both Sun and IBM JDKs.boolean
tryHardToDelete
(File f, boolean runGC) If delete does not work, call System.gc() if asked to, wait a little and try again.
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Field Details
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FAT_FILE_TIMESTAMP_GRANULARITY
public static final long FAT_FILE_TIMESTAMP_GRANULARITYThe granularity of timestamps under FAT.- See Also:
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UNIX_FILE_TIMESTAMP_GRANULARITY
public static final long UNIX_FILE_TIMESTAMP_GRANULARITYThe granularity of timestamps under Unix.- See Also:
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NTFS_FILE_TIMESTAMP_GRANULARITY
public static final long NTFS_FILE_TIMESTAMP_GRANULARITYThe granularity of timestamps under the NT File System. NTFS has a granularity of 100 nanoseconds, which is less than 1 millisecond, so we round this up to 1 millisecond.- See Also:
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Constructor Details
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FileUtils
protected FileUtils()Empty constructor.
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Method Details
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newFileUtils
Deprecated.since 1.7. Use getFileUtils instead, FileUtils do not have state.Factory method.- Returns:
- a new instance of FileUtils.
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getFileUtils
Method to retrieve The FileUtils, which is shared by all users of this method.- Returns:
- an instance of FileUtils.
- Since:
- Ant 1.6.3
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getFileURL
Get the URL for a file taking into account # characters.- Parameters:
file
- the file whose URL representation is required.- Returns:
- The FileURL value.
- Throws:
MalformedURLException
- if the URL representation cannot be formed.
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copyFile
Convenience method to copy a file from a source to a destination. No filtering is performed.- Parameters:
sourceFile
- Name of file to copy from. Must not benull
.destFile
- Name of file to copy to. Must not benull
.- Throws:
IOException
- if the copying fails.
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copyFile
public void copyFile(String sourceFile, String destFile, FilterSetCollection filters) throws IOException Convenience method to copy a file from a source to a destination specifying if token filtering must be used.- Parameters:
sourceFile
- Name of file to copy from. Must not benull
.destFile
- Name of file to copy to. Must not benull
.filters
- the collection of filters to apply to this copy.- Throws:
IOException
- if the copying fails.
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copyFile
public void copyFile(String sourceFile, String destFile, FilterSetCollection filters, boolean overwrite) throws IOException Convenience method to copy a file from a source to a destination specifying if token filtering must be used and if source files may overwrite newer destination files.- Parameters:
sourceFile
- Name of file to copy from. Must not benull
.destFile
- Name of file to copy to. Must not benull
.filters
- the collection of filters to apply to this copy.overwrite
- Whether or not the destination file should be overwritten if it already exists.- Throws:
IOException
- if the copying fails.
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copyFile
public void copyFile(String sourceFile, String destFile, FilterSetCollection filters, boolean overwrite, boolean preserveLastModified) throws IOException Convenience method to copy a file from a source to a destination specifying if token filtering must be used, if source files may overwrite newer destination files and the last modified time ofdestFile
file should be made equal to the last modified time ofsourceFile
.- Parameters:
sourceFile
- Name of file to copy from. Must not benull
.destFile
- Name of file to copy to. Must not benull
.filters
- the collection of filters to apply to this copy.overwrite
- Whether or not the destination file should be overwritten if it already exists.preserveLastModified
- Whether or not the last modified time of the resulting file should be set to that of the source file.- Throws:
IOException
- if the copying fails.
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copyFile
public void copyFile(String sourceFile, String destFile, FilterSetCollection filters, boolean overwrite, boolean preserveLastModified, String encoding) throws IOException Convenience method to copy a file from a source to a destination specifying if token filtering must be used, if source files may overwrite newer destination files and the last modified time ofdestFile
file should be made equal to the last modified time ofsourceFile
.- Parameters:
sourceFile
- Name of file to copy from. Must not benull
.destFile
- Name of file to copy to. Must not benull
.filters
- the collection of filters to apply to this copy.overwrite
- Whether or not the destination file should be overwritten if it already exists.preserveLastModified
- Whether or not the last modified time of the resulting file should be set to that of the source file.encoding
- the encoding used to read and write the files.- Throws:
IOException
- if the copying fails.- Since:
- Ant 1.5
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copyFile
public void copyFile(String sourceFile, String destFile, FilterSetCollection filters, Vector<FilterChain> filterChains, boolean overwrite, boolean preserveLastModified, String encoding, Project project) throws IOException Convenience method to copy a file from a source to a destination specifying if token filtering must be used, if filter chains must be used, if source files may overwrite newer destination files and the last modified time ofdestFile
file should be made equal to the last modified time ofsourceFile
.- Parameters:
sourceFile
- Name of file to copy from. Must not benull
.destFile
- Name of file to copy to. Must not benull
.filters
- the collection of filters to apply to this copy.filterChains
- filterChains to apply during the copy.overwrite
- Whether or not the destination file should be overwritten if it already exists.preserveLastModified
- Whether or not the last modified time of the resulting file should be set to that of the source file.encoding
- the encoding used to read and write the files.project
- the project instance.- Throws:
IOException
- if the copying fails.- Since:
- Ant 1.5
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copyFile
public void copyFile(String sourceFile, String destFile, FilterSetCollection filters, Vector<FilterChain> filterChains, boolean overwrite, boolean preserveLastModified, String inputEncoding, String outputEncoding, Project project) throws IOException Convenience method to copy a file from a source to a destination specifying if token filtering must be used, if filter chains must be used, if source files may overwrite newer destination files and the last modified time ofdestFile
file should be made equal to the last modified time ofsourceFile
.- Parameters:
sourceFile
- Name of file to copy from. Must not benull
.destFile
- Name of file to copy to. Must not benull
.filters
- the collection of filters to apply to this copy.filterChains
- filterChains to apply during the copy.overwrite
- Whether or not the destination file should be overwritten if it already exists.preserveLastModified
- Whether or not the last modified time of the resulting file should be set to that of the source file.inputEncoding
- the encoding used to read the files.outputEncoding
- the encoding used to write the files.project
- the project instance.- Throws:
IOException
- if the copying fails.- Since:
- Ant 1.6
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copyFile
Convenience method to copy a file from a source to a destination. No filtering is performed.- Parameters:
sourceFile
- the file to copy from. Must not benull
.destFile
- the file to copy to. Must not benull
.- Throws:
IOException
- if the copying fails.
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copyFile
public void copyFile(File sourceFile, File destFile, FilterSetCollection filters) throws IOException Convenience method to copy a file from a source to a destination specifying if token filtering must be used.- Parameters:
sourceFile
- the file to copy from. Must not benull
.destFile
- the file to copy to. Must not benull
.filters
- the collection of filters to apply to this copy.- Throws:
IOException
- if the copying fails.
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copyFile
public void copyFile(File sourceFile, File destFile, FilterSetCollection filters, boolean overwrite) throws IOException Convenience method to copy a file from a source to a destination specifying if token filtering must be used and if source files may overwrite newer destination files.- Parameters:
sourceFile
- the file to copy from. Must not benull
.destFile
- the file to copy to. Must not benull
.filters
- the collection of filters to apply to this copy.overwrite
- Whether or not the destination file should be overwritten if it already exists.- Throws:
IOException
- if the copying fails.
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copyFile
public void copyFile(File sourceFile, File destFile, FilterSetCollection filters, boolean overwrite, boolean preserveLastModified) throws IOException Convenience method to copy a file from a source to a destination specifying if token filtering must be used, if source files may overwrite newer destination files and the last modified time ofdestFile
file should be made equal to the last modified time ofsourceFile
.- Parameters:
sourceFile
- the file to copy from. Must not benull
.destFile
- the file to copy to. Must not benull
.filters
- the collection of filters to apply to this copy.overwrite
- Whether or not the destination file should be overwritten if it already exists.preserveLastModified
- Whether or not the last modified time of the resulting file should be set to that of the source file.- Throws:
IOException
- if the copying fails.
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copyFile
public void copyFile(File sourceFile, File destFile, FilterSetCollection filters, boolean overwrite, boolean preserveLastModified, String encoding) throws IOException Convenience method to copy a file from a source to a destination specifying if token filtering must be used, if source files may overwrite newer destination files, the last modified time ofdestFile
file should be made equal to the last modified time ofsourceFile
and which character encoding to assume.- Parameters:
sourceFile
- the file to copy from. Must not benull
.destFile
- the file to copy to. Must not benull
.filters
- the collection of filters to apply to this copy.overwrite
- Whether or not the destination file should be overwritten if it already exists.preserveLastModified
- Whether or not the last modified time of the resulting file should be set to that of the source file.encoding
- the encoding used to read and write the files.- Throws:
IOException
- if the copying fails.- Since:
- Ant 1.5
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copyFile
public void copyFile(File sourceFile, File destFile, FilterSetCollection filters, Vector<FilterChain> filterChains, boolean overwrite, boolean preserveLastModified, String encoding, Project project) throws IOException Convenience method to copy a file from a source to a destination specifying if token filtering must be used, if filter chains must be used, if source files may overwrite newer destination files and the last modified time ofdestFile
file should be made equal to the last modified time ofsourceFile
.- Parameters:
sourceFile
- the file to copy from. Must not benull
.destFile
- the file to copy to. Must not benull
.filters
- the collection of filters to apply to this copy.filterChains
- filterChains to apply during the copy.overwrite
- Whether or not the destination file should be overwritten if it already exists.preserveLastModified
- Whether or not the last modified time of the resulting file should be set to that of the source file.encoding
- the encoding used to read and write the files.project
- the project instance.- Throws:
IOException
- if the copying fails.- Since:
- Ant 1.5
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copyFile
public void copyFile(File sourceFile, File destFile, FilterSetCollection filters, Vector<FilterChain> filterChains, boolean overwrite, boolean preserveLastModified, String inputEncoding, String outputEncoding, Project project) throws IOException Convenience method to copy a file from a source to a destination specifying if token filtering must be used, if filter chains must be used, if source files may overwrite newer destination files and the last modified time ofdestFile
file should be made equal to the last modified time ofsourceFile
.- Parameters:
sourceFile
- the file to copy from. Must not benull
.destFile
- the file to copy to. Must not benull
.filters
- the collection of filters to apply to this copy.filterChains
- filterChains to apply during the copy.overwrite
- Whether or not the destination file should be overwritten if it already exists.preserveLastModified
- Whether or not the last modified time of the resulting file should be set to that of the source file.inputEncoding
- the encoding used to read the files.outputEncoding
- the encoding used to write the files.project
- the project instance.- Throws:
IOException
- if the copying fails.- Since:
- Ant 1.6
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copyFile
public void copyFile(File sourceFile, File destFile, FilterSetCollection filters, Vector<FilterChain> filterChains, boolean overwrite, boolean preserveLastModified, boolean append, String inputEncoding, String outputEncoding, Project project) throws IOException Convenience method to copy a file from a source to a destination specifying if token filtering must be used, if filter chains must be used, if source files may overwrite newer destination files and the last modified time ofdestFile
file should be made equal to the last modified time ofsourceFile
.- Parameters:
sourceFile
- the file to copy from. Must not benull
.destFile
- the file to copy to. Must not benull
.filters
- the collection of filters to apply to this copy.filterChains
- filterChains to apply during the copy.overwrite
- Whether or not the destination file should be overwritten if it already exists.preserveLastModified
- Whether or not the last modified time of the resulting file should be set to that of the source file.append
- whether to append to the destination file.inputEncoding
- the encoding used to read the files.outputEncoding
- the encoding used to write the files.project
- the project instance.- Throws:
IOException
- if the copying fails.- Since:
- Ant 1.8
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copyFile
public void copyFile(File sourceFile, File destFile, FilterSetCollection filters, Vector<FilterChain> filterChains, boolean overwrite, boolean preserveLastModified, boolean append, String inputEncoding, String outputEncoding, Project project, boolean force) throws IOException Convenience method to copy a file from a source to a destination specifying if token filtering must be used, if filter chains must be used, if source files may overwrite newer destination files and the last modified time ofdestFile
file should be made equal to the last modified time ofsourceFile
.- Parameters:
sourceFile
- the file to copy from. Must not benull
.destFile
- the file to copy to. Must not benull
.filters
- the collection of filters to apply to this copy.filterChains
- filterChains to apply during the copy.overwrite
- Whether or not the destination file should be overwritten if it already exists.preserveLastModified
- Whether or not the last modified time of the resulting file should be set to that of the source file.append
- whether to append to the destination file.inputEncoding
- the encoding used to read the files.outputEncoding
- the encoding used to write the files.project
- the project instance.force
- whether to overwrite read-only destination files.- Throws:
IOException
- if the copying fails.- Since:
- Ant 1.8.2
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setFileLastModified
Calls File.setLastModified(long time). Originally written to to dynamically bind to that call on Java1.2+.- Parameters:
file
- the file whose modified time is to be settime
- the time to which the last modified time is to be set. if this is -1, the current time is used.
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resolveFile
Interpret the filename as a file relative to the given file unless the filename already represents an absolute filename. Differs fromnew File(file, filename)
in that the resulting File's path will always be a normalized, absolute pathname. Also, if it is determined thatfilename
is context-relative,file
will be discarded and the reference will be resolved using available context/state information about the filesystem.- Parameters:
file
- the "reference" file for relative paths. This instance must be an absolute file and must not contain "./" or "../" sequences (same for \ instead of /). If it is null, this call is equivalent tonew java.io.File(filename).getAbsoluteFile()
.filename
- a file name.- Returns:
- an absolute file.
- Throws:
NullPointerException
- if filename is null.
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isContextRelativePath
On DOS and NetWare, the evaluation of certain file specifications is context-dependent. These are filenames beginning with a single separator (relative to current root directory) and filenames with a drive specification and no intervening separator (relative to current directory of the specified root).- Parameters:
filename
- the filename to evaluate.- Returns:
- true if the filename is relative to system context.
- Throws:
NullPointerException
- if filename is null.- Since:
- Ant 1.7
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isAbsolutePath
Verifies that the specified filename represents an absolute path. Differs from new java.io.File("filename").isAbsolute() in that a path beginning with a double file separator--signifying a Windows UNC--must at minimum match "\\a\b" to be considered an absolute path.- Parameters:
filename
- the filename to be checked.- Returns:
- true if the filename represents an absolute path.
- Throws:
NullPointerException
- if filename is null.- Since:
- Ant 1.6.3
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translatePath
Translate a path into its native (platform specific) format.This method uses PathTokenizer to separate the input path into its components. This handles DOS style paths in a relatively sensible way. The file separators are then converted to their platform specific versions.
- Parameters:
toProcess
- The path to be translated. May benull
.- Returns:
- the native version of the specified path or
an empty string if the path is
null
or empty. - Since:
- ant 1.7
- See Also:
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normalize
"Normalize" the given absolute path.This includes:
- Uppercase the drive letter if there is one.
- Remove redundant slashes after the drive spec.
- Resolve all ./, .\, ../ and ..\ sequences.
- DOS style paths that start with a drive letter will have \ as the separator.
Unlike
File.getCanonicalPath()
this method specifically does not resolve symbolic links.If the path tries to go beyond the file system root (i.e. it contains more ".." segments than can be travelled up) the method will return the original path unchanged.
- Parameters:
path
- the path to be normalized.- Returns:
- the normalized version of the path.
- Throws:
NullPointerException
- if path is null.
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dissect
Dissect the specified absolute path.- Parameters:
path
- the path to dissect.- Returns:
- String[] {root, remaining path}.
- Throws:
NullPointerException
- if path is null.- Since:
- Ant 1.7
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toVMSPath
Returns a VMS String representation of aFile
object. This is useful since the JVM by default internally converts VMS paths to Unix style. The returned String is always an absolute path.- Parameters:
f
- TheFile
to get the VMS path for.- Returns:
- The absolute VMS path to
f
.
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createTempFile
Deprecated.since ant 1.7.1 use createTempFile(Project, String, String, File, boolean, boolean) instead.Create a File object for a temporary file in a given directory. Without actually creating the file.The file denoted by the returned abstract pathname did not exist before this method was invoked, any subsequent invocation of this method will yield a different file name.
If the filesystem where the temporary file is created supports POSIX permissions, the file will only be readable and writable by the current user.
- Parameters:
prefix
- file name prefix.suffix
- file extension; include the '.'.parentDir
- Directory to create the temporary file in; java.io.tmpdir used if not specified.- Returns:
- a File reference to the new, nonexistent temporary file.
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createTempFile
@Deprecated public File createTempFile(String prefix, String suffix, File parentDir, boolean deleteOnExit, boolean createFile) Deprecated.since Ant 1.10.8 use createTempFile(Project, String, String, File, boolean, boolean) instead.Create a temporary file in a given directory.The file denoted by the returned abstract pathname did not exist before this method was invoked, any subsequent invocation of this method will yield a different file name.
If the filesystem where the temporary file is created supports POSIX permissions, the file will only be readable and writable by the current user.
- Parameters:
prefix
- file name prefix.suffix
- file extension; include the '.'.parentDir
- Directory to create the temporary file in; java.io.tmpdir used if not specified.deleteOnExit
- whether to set the tempfile for deletion on normal VM exit.createFile
- true if the file must actually be created. If false chances exist that a file with the same name is created in the time between invoking this method and the moment the file is actually created. If possible set to true.- Returns:
- a File reference to the new temporary file.
- Since:
- Ant 1.7.1
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createTempFile
public File createTempFile(Project project, String prefix, String suffix, File parentDir, boolean deleteOnExit, boolean createFile) Create a temporary file in a given directory.The file denoted by the returned abstract pathname did not exist before this method was invoked, any subsequent invocation of this method will yield a different file name.
If the filesystem where the temporary file is created supports POSIX permissions, the file will only be readable and writable by the current user.
- Parameters:
project
- reference to the current Ant project.prefix
- file name prefix.suffix
- file extension; include the '.'.parentDir
- Directory to create the temporary file in; if not specified andproject
is not null then the value of the propertyant.tmpdir
is used if set; otherwisejava.io.tmpdir
is used.deleteOnExit
- whether to set the tempfile for deletion on normal VM exit.createFile
- true if the file must actually be created. If false chances exist that a file with the same name is created in the time between invoking this method and the moment the file is actually created. If possible set to true.- Returns:
- a File reference to the new temporary file.
- Since:
- Ant 1.9.15
-
createTempFile
@Deprecated public File createTempFile(String prefix, String suffix, File parentDir, boolean deleteOnExit) Deprecated.since ant 1.7.1 use createTempFile(Project, String, String, File, boolean, boolean) instead.Create a File object for a temporary file in a given directory. Without actually creating the file.The file denoted by the returned abstract pathname did not exist before this method was invoked, any subsequent invocation of this method will yield a different file name.
If the filesystem where the temporary file is created supports POSIX permissions, the file will only be readable and writable by the current user.
- Parameters:
prefix
- file name prefix.suffix
- file extension; include the '.'.parentDir
- Directory to create the temporary file in; java.io.tmpdir used if not specified.deleteOnExit
- whether to set the tempfile for deletion on normal VM exit.- Returns:
- a File reference to the new, nonexistent temporary file.
-
contentEquals
Compares the contents of two files.- Parameters:
f1
- the file whose content is to be compared.f2
- the other file whose content is to be compared.- Returns:
- true if the content of the files is the same.
- Throws:
IOException
- if the files cannot be read.
-
contentEquals
Compares the contents of two files.- Parameters:
f1
- the file whose content is to be compared.f2
- the other file whose content is to be compared.textfile
- true if the file is to be treated as a text file and differences in kind of line break are to be ignored.- Returns:
- true if the content of the files is the same.
- Throws:
IOException
- if the files cannot be read.- Since:
- Ant 1.6.3
-
getParentFile
Deprecated.since 1.7. Just useFile.getParentFile()
directly.This was originally an emulation ofFile.getParentFile()
for JDK 1.1, but it is now implemented using that method (Ant 1.6.3 onwards).- Parameters:
f
- the file whose parent is required.- Returns:
- the given file's parent, or null if the file does not have a parent.
- Since:
- 1.10
-
readFully
Read from reader till EOF.- Parameters:
rdr
- the reader from which to read.- Returns:
- the contents read out of the given reader.
- Throws:
IOException
- if the contents could not be read out from the reader.
-
readFully
Read from reader till EOF.- Parameters:
rdr
- the reader from which to read.bufferSize
- the buffer size to use when reading.- Returns:
- the contents read out of the given reader.
- Throws:
IOException
- if the contents could not be read out from the reader.
-
safeReadFully
Safe read fully - do not return a null for an empty reader.- Parameters:
reader
- the input to read from.- Returns:
- the string.
- Throws:
IOException
- if unable to read from reader.- Since:
- Ant 1.7.1
-
createNewFile
This was originally an emulation of File.createNewFile for JDK 1.1, but it is now implemented using that method (Ant 1.6.3 onwards).This method has historically not guaranteed that the operation was atomic. In its current implementation it is.
- Parameters:
f
- the file to be created.- Returns:
- true if the file did not exist already.
- Throws:
IOException
- on error.- Since:
- Ant 1.5
-
createNewFile
Create a new file, optionally creating parent directories.- Parameters:
f
- the file to be created.mkdirs
-boolean
whether to create parent directories.- Returns:
- true if the file did not exist already.
- Throws:
IOException
- on error.- Since:
- Ant 1.6.3
-
isSymbolicLink
Deprecated.useFiles.isSymbolicLink(Path)
insteadChecks whether a given file is a symbolic link.It doesn't really test for symbolic links but whether the canonical and absolute paths of the file are identical--this may lead to false positives on some platforms.
- Parameters:
parent
- the parent directory of the file to testname
- the name of the file to test.- Returns:
- true if the file is a symbolic link.
- Throws:
IOException
- on error.- Since:
- Ant 1.5
-
removeLeadingPath
Removes a leading path from a second path.This method uses
normalize(java.lang.String)
under the covers and does not resolve symbolic links.- Parameters:
leading
- The leading path, must not be null, must be absolute.path
- The path to remove from, must not be null, must be absolute.- Returns:
- path's normalized absolute if it doesn't start with leading; path's path with leading's path removed otherwise.
- Since:
- Ant 1.5
-
isLeadingPath
Learn whether one path "leads" another.This method uses
normalize(java.lang.String)
under the covers and does not resolve symbolic links.If either path tries to go beyond the file system root (i.e. it contains more ".." segments than can be travelled up) the method will return false.
- Parameters:
leading
- The leading path, must not be null, must be absolute.path
- The path to check, must not be null, must be absolute.- Returns:
- true if path starts with leading; false otherwise.
- Since:
- Ant 1.7
-
isLeadingPath
Learn whether one path "leads" another.- Parameters:
leading
- The leading path, must not be null, must be absolute.path
- The path to check, must not be null, must be absolute.resolveSymlinks
- whether symbolic links shall be resolved prior to comparing the paths.- Returns:
- true if path starts with leading; false otherwise.
- Throws:
IOException
- if resolveSymlinks is true and invoking getCanonicaPath on either argument throws an exception- Since:
- Ant 1.10.5
-
toURI
Constructs afile:
URI that represents the external form of the given pathname.Will be an absolute URI if the given path is absolute.
This code encodes non ASCII characters too.
The coding of the output is the same as what File.toURI().toASCIIString() produces
See dt-sysid which makes some mention of how characters not supported by URI Reference syntax should be escaped.- Parameters:
path
- the path in the local file system.- Returns:
- the URI version of the local path.
- Since:
- Ant 1.6
-
fromURI
Constructs a file path from afile:
URI.Will be an absolute path if the given URI is absolute.
Swallows '%' that are not followed by two characters, doesn't deal with non-ASCII characters.
- Parameters:
uri
- the URI designating a file in the local filesystem.- Returns:
- the local file system path for the file.
- Since:
- Ant 1.6
-
fileNameEquals
Compares two filenames.Unlike java.io.File#equals this method will try to compare the absolute paths and "normalize" the filenames before comparing them.
- Parameters:
f1
- the file whose name is to be compared.f2
- the other file whose name is to be compared.- Returns:
- true if the file are for the same file.
- Since:
- Ant 1.5.3
-
areSame
Are the two File instances pointing to the same object on the file system?- Parameters:
f1
- Filef2
- File- Returns:
- boolean
- Throws:
IOException
- if file name canonicalization fails- Since:
- Ant 1.8.2
-
rename
Renames a file, even if that involves crossing file system boundaries.This will remove
to
(if it exists), ensure thatto
's parent directory exists and movefrom
, which involves deletingfrom
as well.- Parameters:
from
- the file to move.to
- the new file name.- Throws:
IOException
- if anything bad happens during this process. Note thatto
may have been deleted already when this happens.- Since:
- Ant 1.6
-
rename
Renames a file, even if that involves crossing file system boundaries.This will remove
to
(if it exists), ensure thatto
's parent directory exists and movefrom
, which involves deletingfrom
as well.- Parameters:
from
- the file to move.to
- the new file name.keepTargetFilePermissions
- keep target file permissions- Throws:
IOException
- if anything bad happens during this process. Note thatto
may have been deleted already when this happens.- Since:
- Ant 1.10.14
-
getFileTimestampGranularity
public long getFileTimestampGranularity()Get the granularity of file timestamps. The choice is made based on OS, which is incorrect--it should really be by filesystem. We do not have an easy way to probe for file systems, however, so this heuristic gives us a decent default.- Returns:
- the difference, in milliseconds, which two file timestamps must have in order for the two files to be considered to have different timestamps.
-
hasErrorInCase
test whether a file or directory exists, with an error in the upper/lower case spelling of the name. Using this method is only interesting on case insensitive file systems (Windows).It will return true only if 3 conditions are met:
- operating system is case insensitive
- file exists
- actual name from directory reading is different from the supplied argument
The purpose is to identify files or directories on case-insensitive filesystems whose case is not what is expected.
Possibly to rename them afterwards to the desired upper/lowercase combination.- Parameters:
localFile
- file to test- Returns:
- true if the file exists and the case of the actual file is not the case of the parameter
- Since:
- Ant 1.7.1
-
isUpToDate
Returns true if the source is older than the dest. If the dest file does not exist, then the test returns false; it is implicitly not up do date.- Parameters:
source
- source file (should be the older).dest
- dest file (should be the newer).granularity
- an offset added to the source time.- Returns:
- true if the source is older than the dest after accounting for granularity.
- Since:
- Ant 1.6.3
-
isUpToDate
Returns true if the source is older than the dest.- Parameters:
source
- source file (should be the older).dest
- dest file (should be the newer).- Returns:
- true if the source is older than the dest, taking the granularity into account.
- Since:
- Ant 1.6.3
-
isUpToDate
public boolean isUpToDate(long sourceTime, long destTime, long granularity) Compare two timestamps for being up to date using the specified granularity.- Parameters:
sourceTime
- timestamp of source file.destTime
- timestamp of dest file.granularity
- os/filesys granularity.- Returns:
- true if the dest file is considered up to date.
-
isUpToDate
public boolean isUpToDate(long sourceTime, long destTime) Compare two timestamps for being up to date using the current granularity.- Parameters:
sourceTime
- timestamp of source file.destTime
- timestamp of dest file.- Returns:
- true if the dest file is considered up to date.
-
close
Close a Writer without throwing any exception if something went wrong. Do not attempt to close it if the argument is null.- Parameters:
device
- output writer, can be null.
-
close
Close a Reader without throwing any exception if something went wrong. Do not attempt to close it if the argument is null.- Parameters:
device
- Reader, can be null.
-
close
Close a stream without throwing any exception if something went wrong. Do not attempt to close it if the argument is null.- Parameters:
device
- stream, can be null.
-
close
Close a stream without throwing any exception if something went wrong. Do not attempt to close it if the argument is null.- Parameters:
device
- stream, can be null.
-
close
Close a Channel without throwing any exception if something went wrong. Do not attempt to close it if the argument is null.- Parameters:
device
- channel, can be null.- Since:
- Ant 1.8.0
-
close
Closes an URLConnection if its concrete implementation provides a way to close it that Ant knows of.- Parameters:
conn
- connection, can be null- Since:
- Ant 1.8.0
-
close
Close anAutoCloseable
without throwing any exception if something went wrong. Do not attempt to close it if the argument is null.- Parameters:
ac
- AutoCloseable, can be null.- Since:
- Ant 1.10.0
-
delete
Delete the file withFile.delete()
if the argument is not null. Do nothing on a null argument.- Parameters:
file
- file to delete.
-
tryHardToDelete
Accommodate Windows bug encountered in both Sun and IBM JDKs. Others possible. If the delete does not work, call System.gc(), wait a little and try again.- Parameters:
f
- File- Returns:
- whether deletion was successful
- Since:
- Ant 1.8.0
-
tryHardToDelete
If delete does not work, call System.gc() if asked to, wait a little and try again.- Parameters:
f
- FilerunGC
- boolean- Returns:
- whether deletion was successful
- Since:
- Ant 1.8.3
-
getRelativePath
Calculates the relative path between two files.Implementation note:
This function may throw an IOException if an I/O error occurs because its use of the canonical pathname may require filesystem queries.- Parameters:
fromFile
- theFile
to calculate the path fromtoFile
- theFile
to calculate the path to- Returns:
- the relative path between the files
- Throws:
Exception
- for undocumented reasons- Since:
- Ant 1.7
- See Also:
-
getPathStack
-
getPath
-
getPath
-
getDefaultEncoding
Get the default encoding. This is done by opening an InputStreamReader on a dummy InputStream and getting the encoding. Could use System.getProperty("file.encoding"), but cannot see where this is documented.- Returns:
- the default file encoding.
-
newOutputStream
Opens a new OutputStream for the given Path.- Parameters:
path
- the path of the fileappend
- whether to append to or a replace an existing file- Returns:
- a stream ready to write to the file
- Throws:
IOException
- if stream creation fails- Since:
- Ant 1.10.2
-
isCaseSensitiveFileSystem
Tries to determine the case sensitivity of the filesystem corresponding to thepath
. While doing so, this method might create a temporary file under the directory represented by thepath
, if it's a directory or in the parent directory of thepath
, if it's a file.This method works on a best effort basis and will return an
Optional.empty()
if it cannot determine the case sensitivity, either due to exception or for any other reason.- Parameters:
path
- The path whose filesystem case sensitivity needs to be checked- Returns:
- Returns true if the filesystem corresponding to the passed
path
is case sensitive. Else returns false. If the case sensitivity cannot be determined for whatever reason, this method returns anOptional.empty()
- Throws:
IllegalArgumentException
- If the passed path is null- Since:
- Ant 1.10.6
-