Package org.codehaus.groovy.runtime

Class ResourceGroovyMethods

  • public class ResourceGroovyMethods
extends DefaultGroovyMethodsSupport
    This class defines new groovy methods for Readers, Writers, InputStreams and OutputStreams which appear on normal JDK classes inside the Groovy environment. Static methods are used with the first parameter being the destination class, i.e. public static T eachLine(InputStream self, Closure c) provides a eachLine(Closure c) method for InputStream.

    NOTE: While this class contains many 'public' static methods, it is primarily regarded as an internal class (its internal package name suggests this also). We value backwards compatibility of these methods when used within Groovy but value less backwards compatibility at the Java method call level. I.e. future versions of Groovy may remove or move a method call in this file but would normally aim to keep the method available from within Groovy.

    • Method Summary

      All Methods Static Methods Concrete Methods 
      Modifier and Type Method Description
      static void append​(java.io.File file, byte[] bytes)
      Append bytes to the end of a File.
      static void append​(java.io.File self, java.io.InputStream stream)
      Append binary data to the file.
      static void append​(java.io.File file, java.io.Reader reader)
      Append the text supplied by the Writer at the end of the File without writing a BOM.
      static void append​(java.io.File file, java.io.Reader reader, boolean writeBom)
      Append the text supplied by the Reader at the end of the File, using a specified encoding.
      static void append​(java.io.File file, java.io.Reader reader, java.lang.String charset)
      Append the text supplied by the Reader at the end of the File without writing a BOM, using a specified encoding.
      static void append​(java.io.File file, java.io.Reader reader, java.lang.String charset, boolean writeBom)
      Append the text supplied by the Reader at the end of the File, using a specified encoding.
      static void append​(java.io.File file, java.io.Writer writer)
      Append the text supplied by the Writer at the end of the File without writing a BOM.
      static void append​(java.io.File file, java.io.Writer writer, boolean writeBom)
      Append the text supplied by the Writer at the end of the File.
      static void append​(java.io.File file, java.io.Writer writer, java.lang.String charset)
      Append the text supplied by the Writer at the end of the File without writing a BOM, using a specified encoding.
      static void append​(java.io.File file, java.io.Writer writer, java.lang.String charset, boolean writeBom)
      Append the text supplied by the Writer at the end of the File, using a specified encoding.
      static void append​(java.io.File file, java.lang.Object text)
      Append the text at the end of the File without writing a BOM.
      static void append​(java.io.File file, java.lang.Object text, boolean writeBom)
      Append the text at the end of the File.
      static void append​(java.io.File file, java.lang.Object text, java.lang.String charset)
      Append the text at the end of the File without writing a BOM, using a specified encoding.
      static void append​(java.io.File file, java.lang.Object text, java.lang.String charset, boolean writeBom)
      Append the text at the end of the File, using a specified encoding.
      static <T> T asType​(java.io.File f, java.lang.Class<T> c)
      Converts this File to a Writable or delegates to default DefaultGroovyMethods.asType(java.lang.Object, java.lang.Class).
      static java.io.File asWritable​(java.io.File file)
      Converts this File to a Writable.
      static java.io.File asWritable​(java.io.File file, java.lang.String encoding)
      Allows a file to return a Writable implementation that can output itself to a Writer stream.
      static boolean deleteDir​(java.io.File self)
      Deletes a directory with all contained files and subdirectories.
      static long directorySize​(java.io.File self)
      Calculates directory size as total size of all its files, recursively.
      static void eachByte​(java.io.File self, int bufferLen, Closure closure)
      Traverse through the bytes of this File, bufferLen bytes at a time.
      static void eachByte​(java.io.File self, Closure closure)
      Traverse through each byte of this File
      static void eachByte​(java.net.URL url, int bufferLen, Closure closure)
      Reads the InputStream from this URL, passing a byte[] and a number of bytes to the given closure.
      static void eachByte​(java.net.URL url, Closure closure)
      Reads the InputStream from this URL, passing each byte to the given closure.
      static void eachDir​(java.io.File self, Closure closure)
      Invokes the closure for each subdirectory in this directory, ignoring regular files.
      static void eachDirMatch​(java.io.File self, java.lang.Object nameFilter, Closure closure)
      Invokes the closure for each subdirectory whose name (dir.name) matches the given nameFilter in the given directory - calling the DefaultGroovyMethods.isCase(java.lang.Object, java.lang.Object) method to determine if a match occurs.
      static void eachDirRecurse​(java.io.File self, Closure closure)
      Recursively processes each descendant subdirectory in this directory.
      static void eachFile​(java.io.File self, FileType fileType, Closure closure)
      Invokes the closure for each 'child' file in this 'parent' folder/directory.
      static void eachFile​(java.io.File self, Closure closure)
      Invokes the closure for each 'child' file in this 'parent' folder/directory.
      static void eachFileMatch​(java.io.File self, FileType fileType, java.lang.Object nameFilter, Closure closure)
      Invokes the closure for each file whose name (file.name) matches the given nameFilter in the given directory - calling the DefaultGroovyMethods.isCase(java.lang.Object, java.lang.Object) method to determine if a match occurs.
      static void eachFileMatch​(java.io.File self, java.lang.Object nameFilter, Closure closure)
      Invokes the closure for each file whose name (file.name) matches the given nameFilter in the given directory - calling the DefaultGroovyMethods.isCase(java.lang.Object, java.lang.Object) method to determine if a match occurs.
      static void eachFileRecurse​(java.io.File self, FileType fileType, Closure closure)
      Processes each descendant file in this directory and any sub-directories.
      static void eachFileRecurse​(java.io.File self, Closure closure)
      Processes each descendant file in this directory and any sub-directories.
      static <T> T eachLine​(java.io.File self, int firstLine, Closure<T> closure)
      Iterates through this file line by line.
      static <T> T eachLine​(java.io.File self, Closure<T> closure)
      Iterates through this file line by line.
      static <T> T eachLine​(java.io.File self, java.lang.String charset, int firstLine, Closure<T> closure)
      Iterates through this file line by line.
      static <T> T eachLine​(java.io.File self, java.lang.String charset, Closure<T> closure)
      Iterates through this file line by line.
      static <T> T eachLine​(java.net.URL url, int firstLine, Closure<T> closure)
      Iterates through the lines read from the URL's associated input stream passing each line to the given 1 or 2 arg closure.
      static <T> T eachLine​(java.net.URL url, Closure<T> closure)
      Iterates through the lines read from the URL's associated input stream passing each line to the given 1 or 2 arg closure.
      static <T> T eachLine​(java.net.URL url, java.lang.String charset, int firstLine, Closure<T> closure)
      Iterates through the lines read from the URL's associated input stream passing each line to the given 1 or 2 arg closure.
      static <T> T eachLine​(java.net.URL url, java.lang.String charset, Closure<T> closure)
      Iterates through the lines read from the URL's associated input stream passing each line to the given 1 or 2 arg closure.
      static void eachObject​(java.io.File self, Closure closure)
      Iterates through the given file object by object.
      static Writable filterLine​(java.io.File self, Closure closure)
      Filters the lines of a File and creates a Writable in return to stream the filtered lines.
      static void filterLine​(java.io.File self, java.io.Writer writer, Closure closure)
      Filter the lines from this File, and write them to the given writer based on the given closure predicate.
      static void filterLine​(java.io.File self, java.io.Writer writer, java.lang.String charset, Closure closure)
      Filter the lines from this File, and write them to the given writer based on the given closure predicate.
      static Writable filterLine​(java.io.File self, java.lang.String charset, Closure closure)
      Filters the lines of a File and creates a Writable in return to stream the filtered lines.
      static Writable filterLine​(java.net.URL self, Closure predicate)
      Filter lines from a URL using a closure predicate.
      static void filterLine​(java.net.URL self, java.io.Writer writer, Closure predicate)
      Uses a closure to filter lines from this URL and pass them to the given writer.
      static void filterLine​(java.net.URL self, java.io.Writer writer, java.lang.String charset, Closure predicate)
      Uses a closure to filter lines from this URL and pass them to the given writer.
      static Writable filterLine​(java.net.URL self, java.lang.String charset, Closure predicate)
      Filter lines from a URL using a closure predicate.
      static byte[] getBytes​(java.io.File file)
      Read the content of the File and returns it as a byte[].
      static byte[] getBytes​(java.net.URL url)
      Read the content of this URL and returns it as a byte[].
      static byte[] getBytes​(java.net.URL url, java.util.Map parameters)
      Read the content of this URL and returns it as a byte[].
      static java.lang.String getText​(java.io.File file)
      Read the content of the File and returns it as a String.
      static java.lang.String getText​(java.io.File file, java.lang.String charset)
      Read the content of the File using the specified encoding and return it as a String.
      static java.lang.String getText​(java.net.URL url)
      Read the content of this URL and returns it as a String.
      static java.lang.String getText​(java.net.URL url, java.lang.String charset)
      Read the data from this URL and return it as a String.
      static java.lang.String getText​(java.net.URL url, java.util.Map parameters)
      Read the content of this URL and returns it as a String.
      static java.lang.String getText​(java.net.URL url, java.util.Map parameters, java.lang.String charset)
      Read the data from this URL and return it as a String.
      static java.io.File leftShift​(java.io.File file, byte[] bytes)
      Write bytes to a File.
      static java.io.File leftShift​(java.io.File file, java.io.InputStream data)
      Append binary data to the file.
      static java.io.File leftShift​(java.io.File file, java.lang.Object text)
      Write the text to the File.
      static java.io.DataInputStream newDataInputStream​(java.io.File file)
      Create a data input stream for this file
      static java.io.DataOutputStream newDataOutputStream​(java.io.File file)
      Creates a new data output stream for this file.
      static java.io.BufferedInputStream newInputStream​(java.io.File file)
      Creates a buffered input stream for this file.
      static java.io.BufferedInputStream newInputStream​(java.net.URL url)
      Creates a buffered input stream for this URL.
      static java.io.BufferedInputStream newInputStream​(java.net.URL url, java.util.Map parameters)
      Creates a buffered input stream for this URL.
      static java.io.ObjectInputStream newObjectInputStream​(java.io.File file)
      Create an object input stream for this file.
      static java.io.ObjectInputStream newObjectInputStream​(java.io.File file, java.lang.ClassLoader classLoader)
      Create an object input stream for this file using the given class loader.
      static java.io.ObjectOutputStream newObjectOutputStream​(java.io.File file)
      Create an object output stream for this file.
      static java.io.BufferedOutputStream newOutputStream​(java.io.File file)
      Create a buffered output stream for this file.
      static java.io.PrintWriter newPrintWriter​(java.io.File file)
      Create a new PrintWriter for this file.
      static java.io.PrintWriter newPrintWriter​(java.io.File file, java.lang.String charset)
      Create a new PrintWriter for this file, using specified charset.
      static java.io.BufferedReader newReader​(java.io.File file)
      Create a buffered reader for this file.
      static java.io.BufferedReader newReader​(java.io.File file, java.lang.String charset)
      Create a buffered reader for this file, using the specified charset as the encoding.
      static java.io.BufferedReader newReader​(java.net.URL url)
      Creates a buffered reader for this URL.
      static java.io.BufferedReader newReader​(java.net.URL url, java.lang.String charset)
      Creates a buffered reader for this URL using the given encoding.
      static java.io.BufferedReader newReader​(java.net.URL url, java.util.Map parameters)
      Creates a buffered reader for this URL.
      static java.io.BufferedReader newReader​(java.net.URL url, java.util.Map parameters, java.lang.String charset)
      Creates a buffered reader for this URL using the given encoding.
      static java.io.BufferedWriter newWriter​(java.io.File file)
      Create a buffered writer for this file.
      static java.io.BufferedWriter newWriter​(java.io.File file, boolean append)
      Creates a buffered writer for this file, optionally appending to the existing file content.
      static java.io.BufferedWriter newWriter​(java.io.File file, java.lang.String charset)
      Creates a buffered writer for this file, writing data without writing a BOM, using a specified encoding.
      static java.io.BufferedWriter newWriter​(java.io.File file, java.lang.String charset, boolean append)
      Helper method to create a buffered writer for a file without writing a BOM.
      static java.io.BufferedWriter newWriter​(java.io.File file, java.lang.String charset, boolean append, boolean writeBom)
      Helper method to create a buffered writer for a file.
      static byte[] readBytes​(java.io.File file)
      Reads the content of the file into a byte array.
      static java.util.List<java.lang.String> readLines​(java.io.File file)
      Reads the file into a list of Strings, with one item for each line.
      static java.util.List<java.lang.String> readLines​(java.io.File file, java.lang.String charset)
      Reads the file into a list of Strings, with one item for each line.
      static java.util.List<java.lang.String> readLines​(java.net.URL self)
      Reads the URL contents into a list, with one element for each line.
      static java.util.List<java.lang.String> readLines​(java.net.URL self, java.lang.String charset)
      Reads the URL contents into a list, with one element for each line.
      static java.lang.String relativePath​(java.io.File self, java.io.File to)
      Relative path to file.
      static boolean renameTo​(java.io.File self, java.lang.String newPathName)
      Renames the file.
      static void setBytes​(java.io.File file, byte[] bytes)
      Write the bytes from the byte array to the File.
      static void setText​(java.io.File file, java.lang.String text)
      Synonym for write(text) allowing file.text = 'foo'.
      static void setText​(java.io.File file, java.lang.String text, java.lang.String charset)
      Synonym for write(text, charset) allowing:
      static long size​(java.io.File self)
      Provide the standard Groovy size() method for File.
      static <T> T splitEachLine​(java.io.File self, java.lang.String regex, Closure<T> closure)
      Iterates through this file line by line, splitting each line using the given regex separator.
      static <T> T splitEachLine​(java.io.File self, java.lang.String regex, java.lang.String charset, Closure<T> closure)
      Iterates through this file line by line, splitting each line using the given regex separator.
      static <T> T splitEachLine​(java.io.File self, java.util.regex.Pattern pattern, Closure<T> closure)
      Iterates through this file line by line, splitting each line using the given separator Pattern.
      static <T> T splitEachLine​(java.io.File self, java.util.regex.Pattern pattern, java.lang.String charset, Closure<T> closure)
      Iterates through this file line by line, splitting each line using the given regex separator Pattern.
      static <T> T splitEachLine​(java.net.URL self, java.lang.String regex, Closure<T> closure)
      Iterates through the input stream associated with this URL line by line, splitting each line using the given regex separator.
      static <T> T splitEachLine​(java.net.URL self, java.lang.String regex, java.lang.String charset, Closure<T> closure)
      Iterates through the input stream associated with this URL line by line, splitting each line using the given regex separator.
      static <T> T splitEachLine​(java.net.URL self, java.util.regex.Pattern pattern, Closure<T> closure)
      Iterates through the input stream associated with this URL line by line, splitting each line using the given regex separator Pattern.
      static <T> T splitEachLine​(java.net.URL self, java.util.regex.Pattern pattern, java.lang.String charset, Closure<T> closure)
      Iterates through the input stream associated with this URL line by line, splitting each line using the given regex separator Pattern.
      static java.net.URI toURI​(java.lang.CharSequence self)
      Transforms a CharSequence representing a URI into a URI object.
      static java.net.URI toURI​(java.lang.String self)
      Transforms a String representing a URI into a URI object.
      static java.net.URL toURL​(java.lang.CharSequence self)
      Transforms a CharSequence representing a URL into a URL object.
      static java.net.URL toURL​(java.lang.String self)
      Transforms a String representing a URL into a URL object.
      static void traverse​(java.io.File self, Closure closure)
      Processes each descendant file in this directory and any sub-directories.
      static void traverse​(java.io.File self, java.util.Map<java.lang.String,​java.lang.Object> options)
      Invokes the closure specified with key 'visit' in the options Map for each descendant file in this directory tree.
      static void traverse​(java.io.File self, java.util.Map<java.lang.String,​java.lang.Object> options, Closure closure)
      Processes each descendant file in this directory and any sub-directories.
      static <T> T withDataInputStream​(java.io.File file, Closure<T> closure)
      Create a new DataInputStream for this file and passes it into the closure.
      static <T> T withDataOutputStream​(java.io.File file, Closure<T> closure)
      Create a new DataOutputStream for this file and passes it into the closure.
      static java.lang.Object withInputStream​(java.io.File file, Closure closure)
      Create a new InputStream for this file and passes it into the closure.
      static <T> T withInputStream​(java.net.URL url, Closure<T> closure)
      Creates a new InputStream for this URL and passes it into the closure.
      static <T> T withObjectInputStream​(java.io.File file, Closure<T> closure)
      Create a new ObjectInputStream for this file and pass it to the closure.
      static <T> T withObjectInputStream​(java.io.File file, java.lang.ClassLoader classLoader, Closure<T> closure)
      Create a new ObjectInputStream for this file associated with the given class loader and pass it to the closure.
      static <T> T withObjectOutputStream​(java.io.File file, Closure<T> closure)
      Create a new ObjectOutputStream for this file and then pass it to the closure.
      static java.lang.Object withOutputStream​(java.io.File file, Closure closure)
      Creates a new OutputStream for this file and passes it into the closure.
      static <T> T withPrintWriter​(java.io.File file, Closure<T> closure)
      Create a new PrintWriter for this file which is then passed it into the given closure.
      static <T> T withPrintWriter​(java.io.File file, java.lang.String charset, Closure<T> closure)
      Create a new PrintWriter with a specified charset for this file.
      static <T> T withReader​(java.io.File file, Closure<T> closure)
      Create a new BufferedReader for this file and then passes it into the closure, ensuring the reader is closed after the closure returns.
      static <T> T withReader​(java.io.File file, java.lang.String charset, Closure<T> closure)
      Create a new BufferedReader for this file using the specified charset and then passes it into the closure, ensuring the reader is closed after the closure returns.
      static <T> T withReader​(java.net.URL url, Closure<T> closure)
      Helper method to create a new BufferedReader for a URL and then passes it to the closure.
      static <T> T withReader​(java.net.URL url, java.lang.String charset, Closure<T> closure)
      Helper method to create a new Reader for a URL and then passes it to the closure.
      static <T> T withWriter​(java.io.File file, Closure<T> closure)
      Creates a new BufferedWriter for this file, passes it to the closure, and ensures the stream is flushed and closed after the closure returns.
      static <T> T withWriter​(java.io.File file, java.lang.String charset, Closure<T> closure)
      Creates a new BufferedWriter for this file, passes it to the closure, and ensures the stream is flushed and closed after the closure returns.
      static <T> T withWriterAppend​(java.io.File file, Closure<T> closure)
      Create a new BufferedWriter for this file in append mode.
      static <T> T withWriterAppend​(java.io.File file, java.lang.String charset, Closure<T> closure)
      Create a new BufferedWriter which will append to this file.
      static void write​(java.io.File file, java.lang.String text)
      Write the text to the File without writing a BOM.
      static void write​(java.io.File file, java.lang.String text, boolean writeBom)
      Write the text to the File.
      static void write​(java.io.File file, java.lang.String text, java.lang.String charset)
      Write the text to the File without writing a BOM, using the specified encoding.
      static void write​(java.io.File file, java.lang.String text, java.lang.String charset, boolean writeBom)
      Write the text to the File, using the specified encoding.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Constructor Detail

      • ResourceGroovyMethods

        public ResourceGroovyMethods()

    • Method Detail

      • size

        public static long size​(java.io.File self)
        Provide the standard Groovy size() method for File.
        Parameters:
        self - a file object
        Returns:
        the file's size (length)
        Since:
        1.5.0

      • directorySize

        public static long directorySize​(java.io.File self)
                          throws java.io.IOException,
                                 java.lang.IllegalArgumentException
        Calculates directory size as total size of all its files, recursively.
        Parameters:
        self - a file object
        Returns:
        directory size (length)
        Throws:
        java.io.IOException - if File object specified does not exist
        java.lang.IllegalArgumentException - if the provided File object does not represent a directory
        Since:
        2.1

      • newObjectOutputStream

        public static java.io.ObjectOutputStream newObjectOutputStream​(java.io.File file)
                                                        throws java.io.IOException
        Create an object output stream for this file.
        Parameters:
        file - a file
        Returns:
        an object output stream
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.5.0

      • withObjectOutputStream

        public static <T> T withObjectOutputStream​(java.io.File file,
                                           Closure<T> closure)
                                    throws java.io.IOException
        Create a new ObjectOutputStream for this file and then pass it to the closure. This method ensures the stream is closed after the closure returns.
        Parameters:
        file - a File
        closure - a closure
        Returns:
        the value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.5.0
        See Also:
        IOGroovyMethods.withStream(java.io.OutputStream, groovy.lang.Closure)

      • newObjectInputStream

        public static java.io.ObjectInputStream newObjectInputStream​(java.io.File file)
                                                      throws java.io.IOException
        Create an object input stream for this file.
        Parameters:
        file - a file
        Returns:
        an object input stream
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.5.0

      • newObjectInputStream

        public static java.io.ObjectInputStream newObjectInputStream​(java.io.File file,
                                                             java.lang.ClassLoader classLoader)
                                                      throws java.io.IOException
        Create an object input stream for this file using the given class loader.
        Parameters:
        file - a file
        classLoader - the class loader to use when loading the class
        Returns:
        an object input stream
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.5.0

      • eachObject

        public static void eachObject​(java.io.File self,
                              Closure closure)
                       throws java.io.IOException,
                              java.lang.ClassNotFoundException
        Iterates through the given file object by object.
        Parameters:
        self - a File
        closure - a closure
        Throws:
        java.io.IOException - if an IOException occurs.
        java.lang.ClassNotFoundException - if the class is not found.
        Since:
        1.0
        See Also:
        IOGroovyMethods.eachObject(java.io.ObjectInputStream, groovy.lang.Closure)

      • withObjectInputStream

        public static <T> T withObjectInputStream​(java.io.File file,
                                          Closure<T> closure)
                                   throws java.io.IOException
        Create a new ObjectInputStream for this file and pass it to the closure. This method ensures the stream is closed after the closure returns.
        Parameters:
        file - a File
        closure - a closure
        Returns:
        the value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.5.2
        See Also:
        IOGroovyMethods.withStream(java.io.InputStream, groovy.lang.Closure)

      • withObjectInputStream

        public static <T> T withObjectInputStream​(java.io.File file,
                                          java.lang.ClassLoader classLoader,
                                          Closure<T> closure)
                                   throws java.io.IOException
        Create a new ObjectInputStream for this file associated with the given class loader and pass it to the closure. This method ensures the stream is closed after the closure returns.
        Parameters:
        file - a File
        classLoader - the class loader to use when loading the class
        closure - a closure
        Returns:
        the value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.5.2
        See Also:
        IOGroovyMethods.withStream(java.io.InputStream, groovy.lang.Closure)

      • eachLine

        public static <T> T eachLine​(java.io.File self,
                             Closure<T> closure)
                      throws java.io.IOException
        Iterates through this file line by line. Each line is passed to the given 1 or 2 arg closure. The file is read using a reader which is closed before this method returns.
        Parameters:
        self - a File
        closure - a closure (arg 1 is line, optional arg 2 is line number starting at line 1)
        Returns:
        the last value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.5.5
        See Also:
        eachLine(java.io.File, int, groovy.lang.Closure)

      • eachLine

        public static <T> T eachLine​(java.io.File self,
                             java.lang.String charset,
                             Closure<T> closure)
                      throws java.io.IOException
        Iterates through this file line by line. Each line is passed to the given 1 or 2 arg closure. The file is read using a reader which is closed before this method returns.
        Parameters:
        self - a File
        charset - opens the file with a specified charset
        closure - a closure (arg 1 is line, optional arg 2 is line number starting at line 1)
        Returns:
        the last value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.6.8
        See Also:
        eachLine(java.io.File, java.lang.String, int, groovy.lang.Closure)

      • eachLine

        public static <T> T eachLine​(java.io.File self,
                             int firstLine,
                             Closure<T> closure)
                      throws java.io.IOException
        Iterates through this file line by line. Each line is passed to the given 1 or 2 arg closure. The file is read using a reader which is closed before this method returns.
        Parameters:
        self - a File
        firstLine - the line number value used for the first line (default is 1, set to 0 to start counting from 0)
        closure - a closure (arg 1 is line, optional arg 2 is line number)
        Returns:
        the last value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.5.7
        See Also:
        IOGroovyMethods.eachLine(java.io.Reader, int, groovy.lang.Closure)

      • eachLine

        public static <T> T eachLine​(java.io.File self,
                             java.lang.String charset,
                             int firstLine,
                             Closure<T> closure)
                      throws java.io.IOException
        Iterates through this file line by line. Each line is passed to the given 1 or 2 arg closure. The file is read using a reader which is closed before this method returns.
        Parameters:
        self - a File
        charset - opens the file with a specified charset
        firstLine - the line number value used for the first line (default is 1, set to 0 to start counting from 0)
        closure - a closure (arg 1 is line, optional arg 2 is line number)
        Returns:
        the last value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.6.8
        See Also:
        IOGroovyMethods.eachLine(java.io.Reader, int, groovy.lang.Closure)

      • eachLine

        public static <T> T eachLine​(java.net.URL url,
                             Closure<T> closure)
                      throws java.io.IOException
        Iterates through the lines read from the URL's associated input stream passing each line to the given 1 or 2 arg closure. The stream is closed before this method returns.
        Parameters:
        url - a URL to open and read
        closure - a closure to apply on each line (arg 1 is line, optional arg 2 is line number starting at line 1)
        Returns:
        the last value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.5.6
        See Also:
        eachLine(java.net.URL, int, groovy.lang.Closure)

      • eachLine

        public static <T> T eachLine​(java.net.URL url,
                             int firstLine,
                             Closure<T> closure)
                      throws java.io.IOException
        Iterates through the lines read from the URL's associated input stream passing each line to the given 1 or 2 arg closure. The stream is closed before this method returns.
        Parameters:
        url - a URL to open and read
        firstLine - the line number value used for the first line (default is 1, set to 0 to start counting from 0)
        closure - a closure to apply on each line (arg 1 is line, optional arg 2 is line number)
        Returns:
        the last value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.5.7
        See Also:
        IOGroovyMethods.eachLine(java.io.InputStream, int, groovy.lang.Closure)

      • eachLine

        public static <T> T eachLine​(java.net.URL url,
                             java.lang.String charset,
                             Closure<T> closure)
                      throws java.io.IOException
        Iterates through the lines read from the URL's associated input stream passing each line to the given 1 or 2 arg closure. The stream is closed before this method returns.
        Parameters:
        url - a URL to open and read
        charset - opens the stream with a specified charset
        closure - a closure to apply on each line (arg 1 is line, optional arg 2 is line number starting at line 1)
        Returns:
        the last value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.5.6
        See Also:
        eachLine(java.net.URL, java.lang.String, int, groovy.lang.Closure)

      • eachLine

        public static <T> T eachLine​(java.net.URL url,
                             java.lang.String charset,
                             int firstLine,
                             Closure<T> closure)
                      throws java.io.IOException
        Iterates through the lines read from the URL's associated input stream passing each line to the given 1 or 2 arg closure. The stream is closed before this method returns.
        Parameters:
        url - a URL to open and read
        charset - opens the stream with a specified charset
        firstLine - the line number value used for the first line (default is 1, set to 0 to start counting from 0)
        closure - a closure to apply on each line (arg 1 is line, optional arg 2 is line number)
        Returns:
        the last value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.5.7
        See Also:
        IOGroovyMethods.eachLine(java.io.Reader, int, groovy.lang.Closure)

      • splitEachLine

        public static <T> T splitEachLine​(java.io.File self,
                                  java.lang.String regex,
                                  Closure<T> closure)
                           throws java.io.IOException
        Iterates through this file line by line, splitting each line using the given regex separator. For each line, the given closure is called with a single parameter being the list of strings computed by splitting the line around matches of the given regular expression. Finally the resources used for processing the file are closed.
        Parameters:
        self - a File
        regex - the delimiting regular expression
        closure - a closure
        Returns:
        the last value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        java.util.regex.PatternSyntaxException - if the regular expression's syntax is invalid
        Since:
        1.5.5
        See Also:
        IOGroovyMethods.splitEachLine(java.io.Reader, java.lang.String, groovy.lang.Closure)

      • splitEachLine

        public static <T> T splitEachLine​(java.io.File self,
                                  java.util.regex.Pattern pattern,
                                  Closure<T> closure)
                           throws java.io.IOException
        Iterates through this file line by line, splitting each line using the given separator Pattern. For each line, the given closure is called with a single parameter being the list of strings computed by splitting the line around matches of the given regular expression Pattern. Finally the resources used for processing the file are closed.
        Parameters:
        self - a File
        pattern - the regular expression Pattern for the delimiter
        closure - a closure
        Returns:
        the last value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.6.8
        See Also:
        IOGroovyMethods.splitEachLine(java.io.Reader, java.util.regex.Pattern, groovy.lang.Closure)

      • splitEachLine

        public static <T> T splitEachLine​(java.io.File self,
                                  java.lang.String regex,
                                  java.lang.String charset,
                                  Closure<T> closure)
                           throws java.io.IOException
        Iterates through this file line by line, splitting each line using the given regex separator. For each line, the given closure is called with a single parameter being the list of strings computed by splitting the line around matches of the given regular expression. Finally the resources used for processing the file are closed.
        Parameters:
        self - a File
        regex - the delimiting regular expression
        charset - opens the file with a specified charset
        closure - a closure
        Returns:
        the last value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        java.util.regex.PatternSyntaxException - if the regular expression's syntax is invalid
        Since:
        1.6.8
        See Also:
        IOGroovyMethods.splitEachLine(java.io.Reader, java.lang.String, groovy.lang.Closure)

      • splitEachLine

        public static <T> T splitEachLine​(java.io.File self,
                                  java.util.regex.Pattern pattern,
                                  java.lang.String charset,
                                  Closure<T> closure)
                           throws java.io.IOException
        Iterates through this file line by line, splitting each line using the given regex separator Pattern. For each line, the given closure is called with a single parameter being the list of strings computed by splitting the line around matches of the given regular expression. Finally the resources used for processing the file are closed.
        Parameters:
        self - a File
        pattern - the regular expression Pattern for the delimiter
        charset - opens the file with a specified charset
        closure - a closure
        Returns:
        the last value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.6.8
        See Also:
        IOGroovyMethods.splitEachLine(java.io.Reader, java.util.regex.Pattern, groovy.lang.Closure)

      • splitEachLine

        public static <T> T splitEachLine​(java.net.URL self,
                                  java.lang.String regex,
                                  Closure<T> closure)
                           throws java.io.IOException
        Iterates through the input stream associated with this URL line by line, splitting each line using the given regex separator. For each line, the given closure is called with a single parameter being the list of strings computed by splitting the line around matches of the given regular expression. Finally the resources used for processing the URL are closed.
        Parameters:
        self - a URL to open and read
        regex - the delimiting regular expression
        closure - a closure
        Returns:
        the last value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        java.util.regex.PatternSyntaxException - if the regular expression's syntax is invalid
        Since:
        1.6.8
        See Also:
        IOGroovyMethods.splitEachLine(java.io.Reader, java.lang.String, groovy.lang.Closure)

      • splitEachLine

        public static <T> T splitEachLine​(java.net.URL self,
                                  java.util.regex.Pattern pattern,
                                  Closure<T> closure)
                           throws java.io.IOException
        Iterates through the input stream associated with this URL line by line, splitting each line using the given regex separator Pattern. For each line, the given closure is called with a single parameter being the list of strings computed by splitting the line around matches of the given regular expression. Finally the resources used for processing the URL are closed.
        Parameters:
        self - a URL to open and read
        pattern - the regular expression Pattern for the delimiter
        closure - a closure
        Returns:
        the last value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.6.8
        See Also:
        IOGroovyMethods.splitEachLine(java.io.Reader, java.util.regex.Pattern, groovy.lang.Closure)

      • splitEachLine

        public static <T> T splitEachLine​(java.net.URL self,
                                  java.lang.String regex,
                                  java.lang.String charset,
                                  Closure<T> closure)
                           throws java.io.IOException
        Iterates through the input stream associated with this URL line by line, splitting each line using the given regex separator. For each line, the given closure is called with a single parameter being the list of strings computed by splitting the line around matches of the given regular expression. Finally the resources used for processing the URL are closed.
        Parameters:
        self - a URL to open and read
        regex - the delimiting regular expression
        charset - opens the file with a specified charset
        closure - a closure
        Returns:
        the last value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        java.util.regex.PatternSyntaxException - if the regular expression's syntax is invalid
        Since:
        1.6.8
        See Also:
        IOGroovyMethods.splitEachLine(java.io.Reader, java.lang.String, groovy.lang.Closure)

      • splitEachLine

        public static <T> T splitEachLine​(java.net.URL self,
                                  java.util.regex.Pattern pattern,
                                  java.lang.String charset,
                                  Closure<T> closure)
                           throws java.io.IOException
        Iterates through the input stream associated with this URL line by line, splitting each line using the given regex separator Pattern. For each line, the given closure is called with a single parameter being the list of strings computed by splitting the line around matches of the given regular expression. Finally the resources used for processing the URL are closed.
        Parameters:
        self - a URL to open and read
        pattern - the regular expression Pattern for the delimiter
        charset - opens the file with a specified charset
        closure - a closure
        Returns:
        the last value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.6.8
        See Also:
        IOGroovyMethods.splitEachLine(java.io.Reader, java.util.regex.Pattern, groovy.lang.Closure)

      • readLines

        public static java.util.List<java.lang.String> readLines​(java.io.File file)
                                                  throws java.io.IOException
        Reads the file into a list of Strings, with one item for each line.
        Parameters:
        file - a File
        Returns:
        a List of lines
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.0
        See Also:
        IOGroovyMethods.readLines(java.io.Reader)

      • readLines

        public static java.util.List<java.lang.String> readLines​(java.io.File file,
                                                         java.lang.String charset)
                                                  throws java.io.IOException
        Reads the file into a list of Strings, with one item for each line.
        Parameters:
        file - a File
        charset - opens the file with a specified charset
        Returns:
        a List of lines
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.6.8
        See Also:
        IOGroovyMethods.readLines(java.io.Reader)

      • readLines

        public static java.util.List<java.lang.String> readLines​(java.net.URL self)
                                                  throws java.io.IOException
        Reads the URL contents into a list, with one element for each line.
        Parameters:
        self - a URL
        Returns:
        a List of lines
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.6.8
        See Also:
        IOGroovyMethods.readLines(java.io.Reader)

      • readLines

        public static java.util.List<java.lang.String> readLines​(java.net.URL self,
                                                         java.lang.String charset)
                                                  throws java.io.IOException
        Reads the URL contents into a list, with one element for each line.
        Parameters:
        self - a URL
        charset - opens the URL with a specified charset
        Returns:
        a List of lines
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.6.8
        See Also:
        IOGroovyMethods.readLines(java.io.Reader)

      • getText

        public static java.lang.String getText​(java.io.File file,
                                       java.lang.String charset)
                                throws java.io.IOException
        Read the content of the File using the specified encoding and return it as a String.
        Parameters:
        file - the file whose content we want to read
        charset - the charset used to read the content of the file
        Returns:
        a String containing the content of the file
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.0

      • getText

        public static java.lang.String getText​(java.io.File file)
                                throws java.io.IOException
        Read the content of the File and returns it as a String.
        Parameters:
        file - the file whose content we want to read
        Returns:
        a String containing the content of the file
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.0

      • getText

        public static java.lang.String getText​(java.net.URL url)
                                throws java.io.IOException
        Read the content of this URL and returns it as a String.
        Parameters:
        url - URL to read content from
        Returns:
        the text from that URL
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.0

      • getText

        public static java.lang.String getText​(java.net.URL url,
                                       java.util.Map parameters)
                                throws java.io.IOException
        Read the content of this URL and returns it as a String. The default connection parameters can be modified by adding keys to the parameters map:
        • connectTimeout : the connection timeout
        • readTimeout : the read timeout
        • useCaches : set the use cache property for the URL connection
        • allowUserInteraction : set the user interaction flag for the URL connection
        • requestProperties : a map of properties to be passed to the URL connection
        Parameters:
        url - URL to read content from
        parameters - connection parameters
        Returns:
        the text from that URL
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.8.1

      • getText

        public static java.lang.String getText​(java.net.URL url,
                                       java.lang.String charset)
                                throws java.io.IOException
        Read the data from this URL and return it as a String. The connection stream is closed before this method returns.
        Parameters:
        url - URL to read content from
        charset - opens the stream with a specified charset
        Returns:
        the text from that URL
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.0
        See Also:
        URLConnection.getInputStream()

      • getText

        public static java.lang.String getText​(java.net.URL url,
                                       java.util.Map parameters,
                                       java.lang.String charset)
                                throws java.io.IOException
        Read the data from this URL and return it as a String. The connection stream is closed before this method returns.
        Parameters:
        url - URL to read content from
        parameters - connection parameters
        charset - opens the stream with a specified charset
        Returns:
        the text from that URL
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.8.1
        See Also:
        URLConnection.getInputStream()

      • getBytes

        public static byte[] getBytes​(java.io.File file)
                       throws java.io.IOException
        Read the content of the File and returns it as a byte[].
        Parameters:
        file - the file whose content we want to read
        Returns:
        a String containing the content of the file
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.7.1

      • getBytes

        public static byte[] getBytes​(java.net.URL url)
                       throws java.io.IOException
        Read the content of this URL and returns it as a byte[].
        Parameters:
        url - URL to read content from
        Returns:
        the byte[] from that URL
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.7.1

      • getBytes

        public static byte[] getBytes​(java.net.URL url,
                              java.util.Map parameters)
                       throws java.io.IOException
        Read the content of this URL and returns it as a byte[]. The default connection parameters can be modified by adding keys to the parameters map:
        • connectTimeout : the connection timeout
        • readTimeout : the read timeout
        • useCaches : set the use cache property for the URL connection
        • allowUserInteraction : set the user interaction flag for the URL connection
        • requestProperties : a map of properties to be passed to the URL connection
        Parameters:
        url - URL to read content from
        parameters - connection parameters
        Returns:
        the byte[] from that URL
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        2.4.4

      • setBytes

        public static void setBytes​(java.io.File file,
                            byte[] bytes)
                     throws java.io.IOException
        Write the bytes from the byte array to the File.
        Parameters:
        file - the file to write to
        bytes - the byte[] to write to the file
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.7.1

      • write

        public static void write​(java.io.File file,
                         java.lang.String text)
                  throws java.io.IOException
        Write the text to the File without writing a BOM.
        Parameters:
        file - a File
        text - the text to write to the File
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.0

      • write

        public static void write​(java.io.File file,
                         java.lang.String text,
                         boolean writeBom)
                  throws java.io.IOException
        Write the text to the File. If the default charset is "UTF-16BE" or "UTF-16LE" (or an equivalent alias) and writeBom is true, the requisite byte order mark is written to the file before the text.
        Parameters:
        file - a File
        text - the text to write to the File
        writeBom - whether to write a BOM
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        2.5.0

      • setText

        public static void setText​(java.io.File file,
                           java.lang.String text)
                    throws java.io.IOException
        Synonym for write(text) allowing file.text = 'foo'.
        Parameters:
        file - a File
        text - the text to write to the File
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.5.1
        See Also:
        write(java.io.File, java.lang.String)

      • setText

        public static void setText​(java.io.File file,
                           java.lang.String text,
                           java.lang.String charset)
                    throws java.io.IOException
        Synonym for write(text, charset) allowing: 
         myFile.setText('some text', charset)
        or with some help from ExpandoMetaClass, you could do something like: 
         myFile.metaClass.setText = { String s -> delegate.setText(s, 'UTF-8') }
 myfile.text = 'some text'
        Parameters:
        file - A File
        charset - The charset used when writing to the file
        text - The text to write to the File
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.7.3
        See Also:
        write(java.io.File, java.lang.String, java.lang.String)

      • leftShift

        public static java.io.File leftShift​(java.io.File file,
                                     java.lang.Object text)
                              throws java.io.IOException
        Write the text to the File.
        Parameters:
        file - a File
        text - the text to write to the File
        Returns:
        the original file
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.0

      • leftShift

        public static java.io.File leftShift​(java.io.File file,
                                     byte[] bytes)
                              throws java.io.IOException
        Write bytes to a File.
        Parameters:
        file - a File
        bytes - the byte array to append to the end of the File
        Returns:
        the original file
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.5.0

      • leftShift

        public static java.io.File leftShift​(java.io.File file,
                                     java.io.InputStream data)
                              throws java.io.IOException
        Append binary data to the file. See append(java.io.File, java.io.InputStream)
        Parameters:
        file - a File
        data - an InputStream of data to write to the file
        Returns:
        the file
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.5.0

      • write

        public static void write​(java.io.File file,
                         java.lang.String text,
                         java.lang.String charset)
                  throws java.io.IOException
        Write the text to the File without writing a BOM, using the specified encoding.
        Parameters:
        file - a File
        text - the text to write to the File
        charset - the charset used
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.0

      • write

        public static void write​(java.io.File file,
                         java.lang.String text,
                         java.lang.String charset,
                         boolean writeBom)
                  throws java.io.IOException
        Write the text to the File, using the specified encoding. If the given charset is "UTF-16BE" or "UTF-16LE" (or an equivalent alias) and writeBom is true, the requisite byte order mark is written to the file before the text.
        Parameters:
        file - a File
        text - the text to write to the File
        charset - the charset used
        writeBom - whether to write a BOM
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        2.5.0

      • append

        public static void append​(java.io.File file,
                          java.lang.Object text)
                   throws java.io.IOException
        Append the text at the end of the File without writing a BOM.
        Parameters:
        file - a File
        text - the text to append at the end of the File
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.0

      • append

        public static void append​(java.io.File file,
                          java.lang.Object text,
                          boolean writeBom)
                   throws java.io.IOException
        Append the text at the end of the File. If the default charset is "UTF-16BE" or "UTF-16LE" (or an equivalent alias) and writeBom is true, the requisite byte order mark is written to the file before the text.
        Parameters:
        file - a File
        text - the text to append at the end of the File
        writeBom - whether to write a BOM
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        2.5.0

      • append

        public static void append​(java.io.File file,
                          java.io.Reader reader)
                   throws java.io.IOException
        Append the text supplied by the Writer at the end of the File without writing a BOM.
        Parameters:
        file - a File
        reader - the Reader supplying the text to append at the end of the File
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        2.3

      • append

        public static void append​(java.io.File file,
                          java.io.Writer writer)
                   throws java.io.IOException
        Append the text supplied by the Writer at the end of the File without writing a BOM.
        Parameters:
        file - a File
        writer - the Writer supplying the text to append at the end of the File
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        2.3

      • append

        public static void append​(java.io.File file,
                          java.io.Writer writer,
                          boolean writeBom)
                   throws java.io.IOException
        Append the text supplied by the Writer at the end of the File. If the default charset is "UTF-16BE" or "UTF-16LE" (or an equivalent alias) and writeBom is true, the requisite byte order mark is written to the file before the text.
        Parameters:
        file - a File
        writer - the Writer supplying the text to append at the end of the File
        writeBom - whether to write a BOM
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        2.5.0

      • append

        public static void append​(java.io.File file,
                          byte[] bytes)
                   throws java.io.IOException
        Append bytes to the end of a File. It will not be interpreted as text.
        Parameters:
        file - a File
        bytes - the byte array to append to the end of the File
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.5.1

      • append

        public static void append​(java.io.File self,
                          java.io.InputStream stream)
                   throws java.io.IOException
        Append binary data to the file. It will not be interpreted as text.
        Parameters:
        self - a File
        stream - stream to read data from.
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.5.0

      • append

        public static void append​(java.io.File file,
                          java.lang.Object text,
                          java.lang.String charset)
                   throws java.io.IOException
        Append the text at the end of the File without writing a BOM, using a specified encoding.
        Parameters:
        file - a File
        text - the text to append at the end of the File
        charset - the charset used
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.0

      • append

        public static void append​(java.io.File file,
                          java.lang.Object text,
                          java.lang.String charset,
                          boolean writeBom)
                   throws java.io.IOException
        Append the text at the end of the File, using a specified encoding. If the given charset is "UTF-16BE" or "UTF-16LE" (or an equivalent alias), writeBom is true, and the file doesn't already exist, the requisite byte order mark is written to the file before the text is appended.
        Parameters:
        file - a File
        text - the text to append at the end of the File
        charset - the charset used
        writeBom - whether to write a BOM
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        2.5.0

      • append

        public static void append​(java.io.File file,
                          java.io.Writer writer,
                          java.lang.String charset)
                   throws java.io.IOException
        Append the text supplied by the Writer at the end of the File without writing a BOM, using a specified encoding.
        Parameters:
        file - a File
        writer - the Writer supplying the text to append at the end of the File
        charset - the charset used
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        2.3

      • append

        public static void append​(java.io.File file,
                          java.io.Writer writer,
                          java.lang.String charset,
                          boolean writeBom)
                   throws java.io.IOException
        Append the text supplied by the Writer at the end of the File, using a specified encoding. If the given charset is "UTF-16BE" or "UTF-16LE" (or an equivalent alias), writeBom is true, and the file doesn't already exist, the requisite byte order mark is written to the file before the text is appended.
        Parameters:
        file - a File
        writer - the Writer supplying the text to append at the end of the File
        charset - the charset used
        writeBom - whether to write a BOM
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        2.5.0

      • append

        public static void append​(java.io.File file,
                          java.io.Reader reader,
                          boolean writeBom)
                   throws java.io.IOException
        Append the text supplied by the Reader at the end of the File, using a specified encoding. If the given charset is "UTF-16BE" or "UTF-16LE" (or an equivalent alias), writeBom is true, and the file doesn't already exist, the requisite byte order mark is written to the file before the text is appended.
        Parameters:
        file - a File
        reader - the Reader supplying the text to append at the end of the File
        writeBom - whether to write a BOM
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        2.5.0

      • append

        public static void append​(java.io.File file,
                          java.io.Reader reader,
                          java.lang.String charset)
                   throws java.io.IOException
        Append the text supplied by the Reader at the end of the File without writing a BOM, using a specified encoding.
        Parameters:
        file - a File
        reader - the Reader supplying the text to append at the end of the File
        charset - the charset used
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        2.3

      • append

        public static void append​(java.io.File file,
                          java.io.Reader reader,
                          java.lang.String charset,
                          boolean writeBom)
                   throws java.io.IOException
        Append the text supplied by the Reader at the end of the File, using a specified encoding. If the given charset is "UTF-16BE" or "UTF-16LE" (or an equivalent alias), writeBom is true, and the file doesn't already exist, the requisite byte order mark is written to the file before the text is appended.
        Parameters:
        file - a File
        reader - the Reader supplying the text to append at the end of the File
        charset - the charset used
        writeBom - whether to write a BOM
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        2.5.0

      • eachFile

        public static void eachFile​(java.io.File self,
                            FileType fileType,
                            Closure closure)
                     throws java.io.FileNotFoundException,
                            java.lang.IllegalArgumentException
        Invokes the closure for each 'child' file in this 'parent' folder/directory. Both regular files and subfolders/subdirectories can be processed depending on the fileType enum value.
        Parameters:
        self - a File (that happens to be a folder/directory)
        fileType - if normal files or directories or both should be processed
        closure - the closure to invoke
        Throws:
        java.io.FileNotFoundException - if the given directory does not exist
        java.lang.IllegalArgumentException - if the provided File object does not represent a directory
        Since:
        1.7.1

      • eachFile

        public static void eachFile​(java.io.File self,
                            Closure closure)
                     throws java.io.FileNotFoundException,
                            java.lang.IllegalArgumentException
        Invokes the closure for each 'child' file in this 'parent' folder/directory. Both regular files and subfolders/subdirectories are processed.
        Parameters:
        self - a File (that happens to be a folder/directory)
        closure - a closure (the parameter passed is the 'child' file)
        Throws:
        java.io.FileNotFoundException - if the given directory does not exist
        java.lang.IllegalArgumentException - if the provided File object does not represent a directory
        Since:
        1.5.0
        See Also:
        File.listFiles(), eachFile(java.io.File, groovy.io.FileType, groovy.lang.Closure)

      • eachDir

        public static void eachDir​(java.io.File self,
                           Closure closure)
                    throws java.io.FileNotFoundException,
                           java.lang.IllegalArgumentException
        Invokes the closure for each subdirectory in this directory, ignoring regular files.
        Parameters:
        self - a File (that happens to be a folder/directory)
        closure - a closure (the parameter passed is the subdirectory file)
        Throws:
        java.io.FileNotFoundException - if the given directory does not exist
        java.lang.IllegalArgumentException - if the provided File object does not represent a directory
        Since:
        1.0
        See Also:
        File.listFiles(), eachFile(java.io.File, groovy.io.FileType, groovy.lang.Closure)

      • eachFileRecurse

        public static void eachFileRecurse​(java.io.File self,
                                   FileType fileType,
                                   Closure closure)
                            throws java.io.FileNotFoundException,
                                   java.lang.IllegalArgumentException
        Processes each descendant file in this directory and any sub-directories. Processing consists of potentially calling closure passing it the current file (which may be a normal file or subdirectory) and then if a subdirectory was encountered, recursively processing the subdirectory. Whether the closure is called is determined by whether the file was a normal file or subdirectory and the value of fileType.
        Parameters:
        self - a File (that happens to be a folder/directory)
        fileType - if normal files or directories or both should be processed
        closure - the closure to invoke on each file
        Throws:
        java.io.FileNotFoundException - if the given directory does not exist
        java.lang.IllegalArgumentException - if the provided File object does not represent a directory
        Since:
        1.7.1

      • traverse

        public static void traverse​(java.io.File self,
                            java.util.Map<java.lang.String,​java.lang.Object> options,
                            Closure closure)
                     throws java.io.FileNotFoundException,
                            java.lang.IllegalArgumentException
        Processes each descendant file in this directory and any sub-directories. Processing consists of potentially calling closure passing it the current file (which may be a normal file or subdirectory) and then if a subdirectory was encountered, recursively processing the subdirectory.

        The traversal can be adapted by providing various options in the options Map according to the following keys:

        type
        A FileType enum to determine if normal files or directories or both are processed
        preDir
        A Closure run before each directory is processed and optionally returning a FileVisitResult value which can be used to control subsequent processing.
        preRoot
        A boolean indicating that the 'preDir' closure should be applied at the root level
        postDir
        A Closure run after each directory is processed and optionally returning a FileVisitResult value which can be used to control subsequent processing. Particularly useful when strict depth-first traversal is required.
        postRoot
        A boolean indicating that the 'postDir' closure should be applied at the root level
        visitRoot
        A boolean indicating that the given closure should be applied for the root dir (not applicable if the 'type' is set to FileType.FILES)
        maxDepth
        The maximum number of directory levels when recursing (default is -1 which means infinite, set to 0 for no recursion)
        filter
        A filter to perform on traversed files/directories (using the DefaultGroovyMethods.isCase(java.lang.Object, java.lang.Object) method). If set, only files/dirs which match are candidates for visiting.
        nameFilter
        A filter to perform on the name of traversed files/directories (using the DefaultGroovyMethods.isCase(java.lang.Object, java.lang.Object) method). If set, only files/dirs which match are candidates for visiting. (Must not be set if 'filter' is set)
        excludeFilter
        A filter to perform on traversed files/directories (using the DefaultGroovyMethods.isCase(java.lang.Object, java.lang.Object) method). If set, any candidates which match won't be visited.
        excludeNameFilter
        A filter to perform on the names of traversed files/directories (using the DefaultGroovyMethods.isCase(java.lang.Object, java.lang.Object) method). If set, any candidates which match won't be visited. (Must not be set if 'excludeFilter' is set)
        sort
        A Closure which if set causes the files and subdirectories for each directory to be processed in sorted order. Note that even when processing only files, the order of visited subdirectories will be affected by this parameter.
        This example prints out file counts and size aggregates for groovy source files within a directory tree: 
         def totalSize = 0
 def count = 0
 def sortByTypeThenName = { a, b ->
     a.isFile() != b.isFile() ? a.isFile() <=> b.isFile() : a.name <=> b.name
 }
 rootDir.traverse(
         type         : FILES,
         nameFilter   : ~/.*\.groovy/,
         preDir       : { if (it.name == '.svn') return SKIP_SUBTREE },
         postDir      : { println "Found $count files in $it.name totalling $totalSize bytes"
                         totalSize = 0; count = 0 },
         postRoot     : true
         sort         : sortByTypeThenName
 ) {it -> totalSize += it.size(); count++ }
        Parameters:
        self - a File (that happens to be a folder/directory)
        options - a Map of options to alter the traversal behavior
        closure - the Closure to invoke on each file/directory and optionally returning a FileVisitResult value which can be used to control subsequent processing
        Throws:
        java.io.FileNotFoundException - if the given directory does not exist
        java.lang.IllegalArgumentException - if the provided File object does not represent a directory or illegal filter combinations are supplied
        Since:
        1.7.1
        See Also:
        DefaultGroovyMethods.sort(java.util.Collection, groovy.lang.Closure), FileVisitResult, FileType

      • traverse

        public static void traverse​(java.io.File self,
                            Closure closure)
                     throws java.io.FileNotFoundException,
                            java.lang.IllegalArgumentException
        Processes each descendant file in this directory and any sub-directories. Convenience method for traverse(java.io.File, java.util.Map, groovy.lang.Closure) when no options to alter the traversal behavior are required.
        Parameters:
        self - a File (that happens to be a folder/directory)
        closure - the Closure to invoke on each file/directory and optionally returning a FileVisitResult value which can be used to control subsequent processing
        Throws:
        java.io.FileNotFoundException - if the given directory does not exist
        java.lang.IllegalArgumentException - if the provided File object does not represent a directory
        Since:
        1.7.1
        See Also:
        traverse(java.io.File, java.util.Map, groovy.lang.Closure)

      • traverse

        public static void traverse​(java.io.File self,
                            java.util.Map<java.lang.String,​java.lang.Object> options)
                     throws java.io.FileNotFoundException,
                            java.lang.IllegalArgumentException
        Invokes the closure specified with key 'visit' in the options Map for each descendant file in this directory tree. Convenience method for traverse(java.io.File, java.util.Map, groovy.lang.Closure) allowing the 'visit' closure to be included in the options Map rather than as a parameter.
        Parameters:
        self - a File (that happens to be a folder/directory)
        options - a Map of options to alter the traversal behavior
        Throws:
        java.io.FileNotFoundException - if the given directory does not exist
        java.lang.IllegalArgumentException - if the provided File object does not represent a directory or illegal filter combinations are supplied
        Since:
        1.7.1
        See Also:
        traverse(java.io.File, java.util.Map, groovy.lang.Closure)

      • eachFileRecurse

        public static void eachFileRecurse​(java.io.File self,
                                   Closure closure)
                            throws java.io.FileNotFoundException,
                                   java.lang.IllegalArgumentException
        Processes each descendant file in this directory and any sub-directories. Processing consists of calling closure passing it the current file (which may be a normal file or subdirectory) and then if a subdirectory was encountered, recursively processing the subdirectory.
        Parameters:
        self - a File (that happens to be a folder/directory)
        closure - a Closure
        Throws:
        java.io.FileNotFoundException - if the given directory does not exist
        java.lang.IllegalArgumentException - if the provided File object does not represent a directory
        Since:
        1.0
        See Also:
        eachFileRecurse(java.io.File, groovy.io.FileType, groovy.lang.Closure)

      • eachDirRecurse

        public static void eachDirRecurse​(java.io.File self,
                                  Closure closure)
                           throws java.io.FileNotFoundException,
                                  java.lang.IllegalArgumentException
        Recursively processes each descendant subdirectory in this directory. Processing consists of calling closure passing it the current subdirectory and then recursively processing that subdirectory. Regular files are ignored during traversal.
        Parameters:
        self - a File (that happens to be a folder/directory)
        closure - a closure
        Throws:
        java.io.FileNotFoundException - if the given directory does not exist
        java.lang.IllegalArgumentException - if the provided File object does not represent a directory
        Since:
        1.5.0
        See Also:
        eachFileRecurse(java.io.File, groovy.io.FileType, groovy.lang.Closure)

      • eachFileMatch

        public static void eachFileMatch​(java.io.File self,
                                 FileType fileType,
                                 java.lang.Object nameFilter,
                                 Closure closure)
                          throws java.io.FileNotFoundException,
                                 java.lang.IllegalArgumentException
        Invokes the closure for each file whose name (file.name) matches the given nameFilter in the given directory - calling the DefaultGroovyMethods.isCase(java.lang.Object, java.lang.Object) method to determine if a match occurs. This method can be used with different kinds of filters like regular expressions, classes, ranges etc. Both regular files and subdirectories may be candidates for matching depending on the value of fileType. 
         // collect names of files in baseDir matching supplied regex pattern
 import static groovy.io.FileType.*
 def names = []
 baseDir.eachFileMatch FILES, ~/foo\d\.txt/, { names << it.name }
 assert names == ['foo1.txt', 'foo2.txt']

 // remove all *.bak files in baseDir
 baseDir.eachFileMatch FILES, ~/.*\.bak/, { File bak -> bak.delete() }

 // print out files > 4K in size from baseDir
 baseDir.eachFileMatch FILES, { new File(baseDir, it).size() > 4096 }, { println "$it.name ${it.size()}" }
        Parameters:
        self - a File (that happens to be a folder/directory)
        fileType - whether normal files or directories or both should be processed
        nameFilter - the filter to perform on the name of the file/directory (using the DefaultGroovyMethods.isCase(java.lang.Object, java.lang.Object) method)
        closure - the closure to invoke
        Throws:
        java.io.FileNotFoundException - if the given directory does not exist
        java.lang.IllegalArgumentException - if the provided File object does not represent a directory
        Since:
        1.7.1

      • eachFileMatch

        public static void eachFileMatch​(java.io.File self,
                                 java.lang.Object nameFilter,
                                 Closure closure)
                          throws java.io.FileNotFoundException,
                                 java.lang.IllegalArgumentException
        Invokes the closure for each file whose name (file.name) matches the given nameFilter in the given directory - calling the DefaultGroovyMethods.isCase(java.lang.Object, java.lang.Object) method to determine if a match occurs. This method can be used with different kinds of filters like regular expressions, classes, ranges etc. Both regular files and subdirectories are matched.
        Parameters:
        self - a File (that happens to be a folder/directory)
        nameFilter - the nameFilter to perform on the name of the file (using the DefaultGroovyMethods.isCase(java.lang.Object, java.lang.Object) method)
        closure - the closure to invoke
        Throws:
        java.io.FileNotFoundException - if the given directory does not exist
        java.lang.IllegalArgumentException - if the provided File object does not represent a directory
        Since:
        1.5.0
        See Also:
        eachFileMatch(java.io.File, groovy.io.FileType, java.lang.Object, groovy.lang.Closure)

      • eachDirMatch

        public static void eachDirMatch​(java.io.File self,
                                java.lang.Object nameFilter,
                                Closure closure)
                         throws java.io.FileNotFoundException,
                                java.lang.IllegalArgumentException
        Invokes the closure for each subdirectory whose name (dir.name) matches the given nameFilter in the given directory - calling the DefaultGroovyMethods.isCase(java.lang.Object, java.lang.Object) method to determine if a match occurs. This method can be used with different kinds of filters like regular expressions, classes, ranges etc. Only subdirectories are matched; regular files are ignored.
        Parameters:
        self - a File (that happens to be a folder/directory)
        nameFilter - the nameFilter to perform on the name of the directory (using the DefaultGroovyMethods.isCase(java.lang.Object, java.lang.Object) method)
        closure - the closure to invoke
        Throws:
        java.io.FileNotFoundException - if the given directory does not exist
        java.lang.IllegalArgumentException - if the provided File object does not represent a directory
        Since:
        1.5.0
        See Also:
        eachFileMatch(java.io.File, groovy.io.FileType, java.lang.Object, groovy.lang.Closure)

      • deleteDir

        public static boolean deleteDir​(java.io.File self)
        Deletes a directory with all contained files and subdirectories.

        The method returns

        • true, when deletion was successful
        • true, when it is called for a non existing directory
        • false, when it is called for a file which isn't a directory
        • false, when directory couldn't be deleted
        Parameters:
        self - a File
        Returns:
        true if the file doesn't exist or deletion was successful
        Since:
        1.6.0

      • renameTo

        public static boolean renameTo​(java.io.File self,
                               java.lang.String newPathName)
        Renames the file. It's a shortcut for File.renameTo(File)
        Parameters:
        self - a File
        newPathName - The new pathname for the named file
        Returns:
        true if and only if the renaming succeeded; false otherwise
        Since:
        1.7.4

      • relativePath

        public static java.lang.String relativePath​(java.io.File self,
                                            java.io.File to)
                                     throws java.io.IOException
        Relative path to file.
        Parameters:
        self - the File to calculate the path from
        to - the File to calculate the path to
        Returns:
        the relative path between the files
        Throws:
        java.io.IOException

      • asWritable

        public static java.io.File asWritable​(java.io.File file)
        Converts this File to a Writable.
        Parameters:
        file - a File
        Returns:
        a File which wraps the input file and which implements Writable
        Since:
        1.0

      • asWritable

        public static java.io.File asWritable​(java.io.File file,
                                      java.lang.String encoding)
        Allows a file to return a Writable implementation that can output itself to a Writer stream.
        Parameters:
        file - a File
        encoding - the encoding to be used when reading the file's contents
        Returns:
        File which wraps the input file and which implements Writable
        Since:
        1.0

      • newReader

        public static java.io.BufferedReader newReader​(java.io.File file)
                                        throws java.io.IOException
        Create a buffered reader for this file.
        Parameters:
        file - a File
        Returns:
        a BufferedReader
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.0

      • newReader

        public static java.io.BufferedReader newReader​(java.io.File file,
                                               java.lang.String charset)
                                        throws java.io.FileNotFoundException,
                                               java.io.UnsupportedEncodingException
        Create a buffered reader for this file, using the specified charset as the encoding.
        Parameters:
        file - a File
        charset - the charset for this File
        Returns:
        a BufferedReader
        Throws:
        java.io.FileNotFoundException - if the File was not found
        java.io.UnsupportedEncodingException - if the encoding specified is not supported
        Since:
        1.0

      • withReader

        public static <T> T withReader​(java.io.File file,
                               Closure<T> closure)
                        throws java.io.IOException
        Create a new BufferedReader for this file and then passes it into the closure, ensuring the reader is closed after the closure returns.
        Parameters:
        file - a file object
        closure - a closure
        Returns:
        the value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.5.2

      • withReader

        public static <T> T withReader​(java.io.File file,
                               java.lang.String charset,
                               Closure<T> closure)
                        throws java.io.IOException
        Create a new BufferedReader for this file using the specified charset and then passes it into the closure, ensuring the reader is closed after the closure returns.
        Parameters:
        file - a file object
        charset - the charset for this input stream
        closure - a closure
        Returns:
        the value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.6.0

      • newOutputStream

        public static java.io.BufferedOutputStream newOutputStream​(java.io.File file)
                                                    throws java.io.IOException
        Create a buffered output stream for this file.
        Parameters:
        file - a file object
        Returns:
        the created OutputStream
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.0

      • newDataOutputStream

        public static java.io.DataOutputStream newDataOutputStream​(java.io.File file)
                                                    throws java.io.IOException
        Creates a new data output stream for this file.
        Parameters:
        file - a file object
        Returns:
        the created DataOutputStream
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.5.0

      • withOutputStream

        public static java.lang.Object withOutputStream​(java.io.File file,
                                                Closure closure)
                                         throws java.io.IOException
        Creates a new OutputStream for this file and passes it into the closure. This method ensures the stream is closed after the closure returns.
        Parameters:
        file - a File
        closure - a closure
        Returns:
        the value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.5.2
        See Also:
        IOGroovyMethods.withStream(java.io.OutputStream, groovy.lang.Closure)

      • withInputStream

        public static java.lang.Object withInputStream​(java.io.File file,
                                               Closure closure)
                                        throws java.io.IOException
        Create a new InputStream for this file and passes it into the closure. This method ensures the stream is closed after the closure returns.
        Parameters:
        file - a File
        closure - a closure
        Returns:
        the value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.5.2
        See Also:
        IOGroovyMethods.withStream(java.io.InputStream, groovy.lang.Closure)

      • withInputStream

        public static <T> T withInputStream​(java.net.URL url,
                                    Closure<T> closure)
                             throws java.io.IOException
        Creates a new InputStream for this URL and passes it into the closure. This method ensures the stream is closed after the closure returns.
        Parameters:
        url - a URL
        closure - a closure
        Returns:
        the value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.5.2
        See Also:
        IOGroovyMethods.withStream(java.io.InputStream, groovy.lang.Closure)

      • withDataOutputStream

        public static <T> T withDataOutputStream​(java.io.File file,
                                         Closure<T> closure)
                                  throws java.io.IOException
        Create a new DataOutputStream for this file and passes it into the closure. This method ensures the stream is closed after the closure returns.
        Parameters:
        file - a File
        closure - a closure
        Returns:
        the value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.5.2
        See Also:
        IOGroovyMethods.withStream(java.io.OutputStream, groovy.lang.Closure)

      • withDataInputStream

        public static <T> T withDataInputStream​(java.io.File file,
                                        Closure<T> closure)
                                 throws java.io.IOException
        Create a new DataInputStream for this file and passes it into the closure. This method ensures the stream is closed after the closure returns.
        Parameters:
        file - a File
        closure - a closure
        Returns:
        the value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.5.2
        See Also:
        IOGroovyMethods.withStream(java.io.InputStream, groovy.lang.Closure)

      • newWriter

        public static java.io.BufferedWriter newWriter​(java.io.File file)
                                        throws java.io.IOException
        Create a buffered writer for this file.
        Parameters:
        file - a File
        Returns:
        a BufferedWriter
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.0

      • newWriter

        public static java.io.BufferedWriter newWriter​(java.io.File file,
                                               boolean append)
                                        throws java.io.IOException
        Creates a buffered writer for this file, optionally appending to the existing file content.
        Parameters:
        file - a File
        append - true if data should be appended to the file
        Returns:
        a BufferedWriter
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.0

      • newWriter

        public static java.io.BufferedWriter newWriter​(java.io.File file,
                                               java.lang.String charset,
                                               boolean append)
                                        throws java.io.IOException
        Helper method to create a buffered writer for a file without writing a BOM.
        Parameters:
        file - a File
        charset - the name of the encoding used to write in this file
        append - true if in append mode
        Returns:
        a BufferedWriter
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.0

      • newWriter

        public static java.io.BufferedWriter newWriter​(java.io.File file,
                                               java.lang.String charset,
                                               boolean append,
                                               boolean writeBom)
                                        throws java.io.IOException
        Helper method to create a buffered writer for a file. If the given charset is "UTF-16BE" or "UTF-16LE" (or an equivalent alias), the requisite byte order mark is written to the stream before the writer is returned.
        Parameters:
        file - a File
        charset - the name of the encoding used to write in this file
        append - true if in append mode
        writeBom - whether to write a BOM
        Returns:
        a BufferedWriter
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        2.5.0

      • newWriter

        public static java.io.BufferedWriter newWriter​(java.io.File file,
                                               java.lang.String charset)
                                        throws java.io.IOException
        Creates a buffered writer for this file, writing data without writing a BOM, using a specified encoding.
        Parameters:
        file - a File
        charset - the name of the encoding used to write in this file
        Returns:
        a BufferedWriter
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.0

      • withWriter

        public static <T> T withWriter​(java.io.File file,
                               Closure<T> closure)
                        throws java.io.IOException
        Creates a new BufferedWriter for this file, passes it to the closure, and ensures the stream is flushed and closed after the closure returns.
        Parameters:
        file - a File
        closure - a closure
        Returns:
        the value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.5.2

      • withWriter

        public static <T> T withWriter​(java.io.File file,
                               java.lang.String charset,
                               Closure<T> closure)
                        throws java.io.IOException
        Creates a new BufferedWriter for this file, passes it to the closure, and ensures the stream is flushed and closed after the closure returns. The writer will use the given charset encoding. If the given charset is "UTF-16BE" or "UTF-16LE" (or an equivalent alias), the requisite byte order mark is written to the stream when the writer is created.
        Parameters:
        file - a File
        charset - the charset used
        closure - a closure
        Returns:
        the value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.5.2

      • withWriterAppend

        public static <T> T withWriterAppend​(java.io.File file,
                                     java.lang.String charset,
                                     Closure<T> closure)
                              throws java.io.IOException
        Create a new BufferedWriter which will append to this file. If the given charset is "UTF-16BE" or "UTF-16LE" (or an equivalent alias), the requisite byte order mark is written to the stream when the writer is created. The writer is passed to the closure and will be closed before this method returns.
        Parameters:
        file - a File
        charset - the charset used
        closure - a closure
        Returns:
        the value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.5.2

      • withWriterAppend

        public static <T> T withWriterAppend​(java.io.File file,
                                     Closure<T> closure)
                              throws java.io.IOException
        Create a new BufferedWriter for this file in append mode. The writer is passed to the closure and is closed after the closure returns.
        Parameters:
        file - a File
        closure - a closure
        Returns:
        the value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.5.2

      • newPrintWriter

        public static java.io.PrintWriter newPrintWriter​(java.io.File file)
                                          throws java.io.IOException
        Create a new PrintWriter for this file.
        Parameters:
        file - a File
        Returns:
        the created PrintWriter
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.0

      • newPrintWriter

        public static java.io.PrintWriter newPrintWriter​(java.io.File file,
                                                 java.lang.String charset)
                                          throws java.io.IOException
        Create a new PrintWriter for this file, using specified charset. If the given charset is "UTF-16BE" or "UTF-16LE" (or an equivalent alias), the requisite byte order mark is written to the stream before the writer is returned.
        Parameters:
        file - a File
        charset - the charset
        Returns:
        a PrintWriter
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.0

      • withPrintWriter

        public static <T> T withPrintWriter​(java.io.File file,
                                    Closure<T> closure)
                             throws java.io.IOException
        Create a new PrintWriter for this file which is then passed it into the given closure. This method ensures its the writer is closed after the closure returns.
        Parameters:
        file - a File
        closure - the closure to invoke with the PrintWriter
        Returns:
        the value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.5.2

      • withPrintWriter

        public static <T> T withPrintWriter​(java.io.File file,
                                    java.lang.String charset,
                                    Closure<T> closure)
                             throws java.io.IOException
        Create a new PrintWriter with a specified charset for this file. If the given charset is "UTF-16BE" or "UTF-16LE" (or an equivalent alias), the requisite byte order mark is written to the stream when the writer is created. The writer is passed to the closure, and will be closed before this method returns.
        Parameters:
        file - a File
        charset - the charset
        closure - the closure to invoke with the PrintWriter
        Returns:
        the value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.5.2

      • withReader

        public static <T> T withReader​(java.net.URL url,
                               Closure<T> closure)
                        throws java.io.IOException
        Helper method to create a new BufferedReader for a URL and then passes it to the closure. The reader is closed after the closure returns.
        Parameters:
        url - a URL
        closure - the closure to invoke with the reader
        Returns:
        the value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.5.2

      • withReader

        public static <T> T withReader​(java.net.URL url,
                               java.lang.String charset,
                               Closure<T> closure)
                        throws java.io.IOException
        Helper method to create a new Reader for a URL and then passes it to the closure. The reader is closed after the closure returns.
        Parameters:
        url - a URL
        charset - the charset used
        closure - the closure to invoke with the reader
        Returns:
        the value returned by the closure
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.5.6

      • newInputStream

        public static java.io.BufferedInputStream newInputStream​(java.io.File file)
                                                  throws java.io.FileNotFoundException
        Creates a buffered input stream for this file.
        Parameters:
        file - a File
        Returns:
        a BufferedInputStream of the file
        Throws:
        java.io.FileNotFoundException - if the file is not found.
        Since:
        1.0

      • newInputStream

        public static java.io.BufferedInputStream newInputStream​(java.net.URL url)
                                                  throws java.net.MalformedURLException,
                                                         java.io.IOException
        Creates a buffered input stream for this URL.
        Parameters:
        url - a URL
        Returns:
        a BufferedInputStream for the URL
        Throws:
        java.net.MalformedURLException - is thrown if the URL is not well formed
        java.io.IOException - if an I/O error occurs while creating the input stream
        Since:
        1.5.2

      • newInputStream

        public static java.io.BufferedInputStream newInputStream​(java.net.URL url,
                                                         java.util.Map parameters)
                                                  throws java.net.MalformedURLException,
                                                         java.io.IOException
        Creates a buffered input stream for this URL. The default connection parameters can be modified by adding keys to the parameters map:
        • connectTimeout : the connection timeout
        • readTimeout : the read timeout
        • useCaches : set the use cache property for the URL connection
        • allowUserInteraction : set the user interaction flag for the URL connection
        • requestProperties : a map of properties to be passed to the URL connection
        Parameters:
        url - a URL
        parameters - connection parameters
        Returns:
        a BufferedInputStream for the URL
        Throws:
        java.net.MalformedURLException - is thrown if the URL is not well formed
        java.io.IOException - if an I/O error occurs while creating the input stream
        Since:
        1.8.1

      • newReader

        public static java.io.BufferedReader newReader​(java.net.URL url)
                                        throws java.net.MalformedURLException,
                                               java.io.IOException
        Creates a buffered reader for this URL.
        Parameters:
        url - a URL
        Returns:
        a BufferedReader for the URL
        Throws:
        java.net.MalformedURLException - is thrown if the URL is not well formed
        java.io.IOException - if an I/O error occurs while creating the input stream
        Since:
        1.5.5

      • newReader

        public static java.io.BufferedReader newReader​(java.net.URL url,
                                               java.util.Map parameters)
                                        throws java.net.MalformedURLException,
                                               java.io.IOException
        Creates a buffered reader for this URL. The default connection parameters can be modified by adding keys to the parameters map:
        • connectTimeout : the connection timeout
        • readTimeout : the read timeout
        • useCaches : set the use cache property for the URL connection
        • allowUserInteraction : set the user interaction flag for the URL connection
        • requestProperties : a map of properties to be passed to the URL connection
        Parameters:
        url - a URL
        parameters - connection parameters
        Returns:
        a BufferedReader for the URL
        Throws:
        java.net.MalformedURLException - is thrown if the URL is not well formed
        java.io.IOException - if an I/O error occurs while creating the input stream
        Since:
        1.8.1

      • newReader

        public static java.io.BufferedReader newReader​(java.net.URL url,
                                               java.lang.String charset)
                                        throws java.net.MalformedURLException,
                                               java.io.IOException
        Creates a buffered reader for this URL using the given encoding.
        Parameters:
        url - a URL
        charset - opens the stream with a specified charset
        Returns:
        a BufferedReader for the URL
        Throws:
        java.net.MalformedURLException - is thrown if the URL is not well formed
        java.io.IOException - if an I/O error occurs while creating the input stream
        Since:
        1.5.5

      • newReader

        public static java.io.BufferedReader newReader​(java.net.URL url,
                                               java.util.Map parameters,
                                               java.lang.String charset)
                                        throws java.net.MalformedURLException,
                                               java.io.IOException
        Creates a buffered reader for this URL using the given encoding.
        Parameters:
        url - a URL
        parameters - connection parameters
        charset - opens the stream with a specified charset
        Returns:
        a BufferedReader for the URL
        Throws:
        java.net.MalformedURLException - is thrown if the URL is not well formed
        java.io.IOException - if an I/O error occurs while creating the input stream
        Since:
        1.8.1

      • newDataInputStream

        public static java.io.DataInputStream newDataInputStream​(java.io.File file)
                                                  throws java.io.FileNotFoundException
        Create a data input stream for this file
        Parameters:
        file - a File
        Returns:
        a DataInputStream of the file
        Throws:
        java.io.FileNotFoundException - if the file is not found.
        Since:
        1.5.0

      • eachByte

        public static void eachByte​(java.io.File self,
                            int bufferLen,
                            Closure closure)
                     throws java.io.IOException
        Traverse through the bytes of this File, bufferLen bytes at a time.
        Parameters:
        self - a File
        bufferLen - the length of the buffer to use.
        closure - a 2 parameter closure which is passed the byte[] and a number of bytes successfully read.
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.7.4
        See Also:
        IOGroovyMethods.eachByte(java.io.InputStream, int, groovy.lang.Closure)

      • eachByte

        public static void eachByte​(java.net.URL url,
                            Closure closure)
                     throws java.io.IOException
        Reads the InputStream from this URL, passing each byte to the given closure. The URL stream will be closed before this method returns.
        Parameters:
        url - url to iterate over
        closure - closure to apply to each byte
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.0
        See Also:
        IOGroovyMethods.eachByte(java.io.InputStream, groovy.lang.Closure)

      • eachByte

        public static void eachByte​(java.net.URL url,
                            int bufferLen,
                            Closure closure)
                     throws java.io.IOException
        Reads the InputStream from this URL, passing a byte[] and a number of bytes to the given closure. The URL stream will be closed before this method returns.
        Parameters:
        url - url to iterate over
        bufferLen - the length of the buffer to use.
        closure - a 2 parameter closure which is passed the byte[] and a number of bytes successfully read.
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.8
        See Also:
        IOGroovyMethods.eachByte(java.io.InputStream, int, groovy.lang.Closure)

      • filterLine

        public static Writable filterLine​(java.io.File self,
                                  Closure closure)
                           throws java.io.IOException
        Filters the lines of a File and creates a Writable in return to stream the filtered lines.
        Parameters:
        self - a File
        closure - a closure which returns a boolean indicating to filter the line or not
        Returns:
        a Writable closure
        Throws:
        java.io.IOException - if self is not readable
        Since:
        1.0
        See Also:
        IOGroovyMethods.filterLine(java.io.Reader, groovy.lang.Closure)

      • filterLine

        public static Writable filterLine​(java.io.File self,
                                  java.lang.String charset,
                                  Closure closure)
                           throws java.io.IOException
        Filters the lines of a File and creates a Writable in return to stream the filtered lines.
        Parameters:
        self - a File
        charset - opens the file with a specified charset
        closure - a closure which returns a boolean indicating to filter the line or not
        Returns:
        a Writable closure
        Throws:
        java.io.IOException - if an IOException occurs
        Since:
        1.6.8
        See Also:
        IOGroovyMethods.filterLine(java.io.Reader, groovy.lang.Closure)

      • filterLine

        public static void filterLine​(java.io.File self,
                              java.io.Writer writer,
                              Closure closure)
                       throws java.io.IOException
        Filter the lines from this File, and write them to the given writer based on the given closure predicate.
        Parameters:
        self - a File
        writer - a writer destination to write filtered lines to
        closure - a closure which takes each line as a parameter and returns true if the line should be written to this writer.
        Throws:
        java.io.IOException - if self is not readable
        Since:
        1.0
        See Also:
        IOGroovyMethods.filterLine(java.io.Reader, java.io.Writer, groovy.lang.Closure)

      • filterLine

        public static void filterLine​(java.io.File self,
                              java.io.Writer writer,
                              java.lang.String charset,
                              Closure closure)
                       throws java.io.IOException
        Filter the lines from this File, and write them to the given writer based on the given closure predicate.
        Parameters:
        self - a File
        writer - a writer destination to write filtered lines to
        charset - opens the file with a specified charset
        closure - a closure which takes each line as a parameter and returns true if the line should be written to this writer.
        Throws:
        java.io.IOException - if an IO error occurs
        Since:
        1.6.8
        See Also:
        IOGroovyMethods.filterLine(java.io.Reader, java.io.Writer, groovy.lang.Closure)

      • filterLine

        public static Writable filterLine​(java.net.URL self,
                                  Closure predicate)
                           throws java.io.IOException
        Filter lines from a URL using a closure predicate. The closure will be passed each line as a String, and it should return true if the line should be passed to the writer.
        Parameters:
        self - a URL
        predicate - a closure which returns boolean and takes a line
        Returns:
        a writable which writes out the filtered lines
        Throws:
        java.io.IOException - if an IO exception occurs
        Since:
        1.6.8
        See Also:
        IOGroovyMethods.filterLine(java.io.Reader, groovy.lang.Closure)

      • filterLine

        public static Writable filterLine​(java.net.URL self,
                                  java.lang.String charset,
                                  Closure predicate)
                           throws java.io.IOException
        Filter lines from a URL using a closure predicate. The closure will be passed each line as a String, and it should return true if the line should be passed to the writer.
        Parameters:
        self - the URL
        charset - opens the URL with a specified charset
        predicate - a closure which returns boolean and takes a line
        Returns:
        a writable which writes out the filtered lines
        Throws:
        java.io.IOException - if an IO exception occurs
        Since:
        1.6.8
        See Also:
        IOGroovyMethods.filterLine(java.io.Reader, groovy.lang.Closure)

      • filterLine

        public static void filterLine​(java.net.URL self,
                              java.io.Writer writer,
                              Closure predicate)
                       throws java.io.IOException
        Uses a closure to filter lines from this URL and pass them to the given writer. The closure will be passed each line as a String, and it should return true if the line should be passed to the writer.
        Parameters:
        self - the URL
        writer - a writer to write output to
        predicate - a closure which returns true if a line should be accepted
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.6.8
        See Also:
        IOGroovyMethods.filterLine(java.io.Reader, java.io.Writer, groovy.lang.Closure)

      • filterLine

        public static void filterLine​(java.net.URL self,
                              java.io.Writer writer,
                              java.lang.String charset,
                              Closure predicate)
                       throws java.io.IOException
        Uses a closure to filter lines from this URL and pass them to the given writer. The closure will be passed each line as a String, and it should return true if the line should be passed to the writer.
        Parameters:
        self - the URL
        writer - a writer to write output to
        charset - opens the URL with a specified charset
        predicate - a closure which returns true if a line should be accepted
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.6.8
        See Also:
        IOGroovyMethods.filterLine(java.io.Reader, java.io.Writer, groovy.lang.Closure)

      • readBytes

        public static byte[] readBytes​(java.io.File file)
                        throws java.io.IOException
        Reads the content of the file into a byte array.
        Parameters:
        file - a File
        Returns:
        a byte array with the contents of the file.
        Throws:
        java.io.IOException - if an IOException occurs.
        Since:
        1.0

      • toURI

        public static java.net.URI toURI​(java.lang.CharSequence self)
                          throws java.net.URISyntaxException
        Transforms a CharSequence representing a URI into a URI object.
        Parameters:
        self - the CharSequence representing a URI
        Returns:
        a URI
        Throws:
        java.net.URISyntaxException - is thrown if the URI is not well formed.
        Since:
        1.8.2

      • toURI

        public static java.net.URI toURI​(java.lang.String self)
                          throws java.net.URISyntaxException
        Transforms a String representing a URI into a URI object.
        Parameters:
        self - the String representing a URI
        Returns:
        a URI
        Throws:
        java.net.URISyntaxException - is thrown if the URI is not well formed.
        Since:
        1.0

      • toURL

        public static java.net.URL toURL​(java.lang.CharSequence self)
                          throws java.net.MalformedURLException
        Transforms a CharSequence representing a URL into a URL object.
        Parameters:
        self - the CharSequence representing a URL
        Returns:
        a URL
        Throws:
        java.net.MalformedURLException - is thrown if the URL is not well formed.
        Since:
        1.8.2

      • toURL

        public static java.net.URL toURL​(java.lang.String self)
                          throws java.net.MalformedURLException
        Transforms a String representing a URL into a URL object.
        Parameters:
        self - the String representing a URL
        Returns:
        a URL
        Throws:
        java.net.MalformedURLException - is thrown if the URL is not well formed.
        Since:
        1.0