FixCRLF (Apache Ant API)
Date: 2017-02-02

org.apache.tools.ant.taskdefs

## Class FixCRLF

- java.lang.Object
- - org.apache.tools.ant.ProjectComponent
  - - org.apache.tools.ant.Task
    - - org.apache.tools.ant.taskdefs.MatchingTask
      - - org.apache.tools.ant.taskdefs.FixCRLF

- All Implemented Interfaces:
    java.lang.Cloneable, ChainableReader, SelectorContainer

      public class FixCRLF
      extends MatchingTask
      implements ChainableReader

  Converts text source files to local OS formatting conventions, as well as repair text files damaged by misconfigured or misguided editors or file transfer programs.

  This task can take the following arguments:

  - srcdir
  - destdir
  - include
  - exclude
  - cr
  - eol
  - tab
  - eof
  - encoding
  - targetencoding
  Of these arguments, only sourcedir is required.

  When this task executes, it will scan the srcdir based on the include and exclude properties.

  This version generalises the handling of EOL characters, and allows for CR-only line endings (the standard on Mac systems prior to OS X). Tab handling has also been generalised to accommodate any tabwidth from 2 to 80, inclusive. Importantly, it will leave untouched any literal TAB characters embedded within string or character constants.

  Warning: do not run on binary files. Caution: run with care on carefully formatted files. This may sound obvious, but if you don't specify asis, presume that your files are going to be modified. If "tabs" is "add" or "remove", whitespace characters may be added or removed as necessary. Similarly, for CR's - in fact "eol"="crlf" or cr="add" can result in cr characters being removed in one special case accommodated, i.e., CRCRLF is regarded as a single EOL to handle cases where other programs have converted CRLF into CRCRLF.

  Since:
    Ant 1.1

- - ### Nested Class Summary

    Nested Classes
    Modifier and Type | Class and Description
    --- | ---
    `static class` | `FixCRLF.AddAsisRemove` Enumerated attribute with the values "asis", "add" and "remove".
    `static class` | `FixCRLF.CrLf` Enumerated attribute with the values "asis", "cr", "lf" and "crlf".
    `protected class` | `FixCRLF.OneLiner` Deprecated. since 1.7.0.

  - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static java.lang.String` | `ERROR_FILE_AND_SRCDIR` error string for using srcdir and file

    - ### Fields inherited from class org.apache.tools.ant.taskdefs.MatchingTask

      `fileset`

    - ### Fields inherited from class org.apache.tools.ant.Task

      `target, taskName, taskType, wrapper`

    - ### Fields inherited from class org.apache.tools.ant.ProjectComponent

      `description, location, project`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `FixCRLF()`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods Deprecated Methods
    Modifier and Type | Method and Description
    --- | ---
    `java.io.Reader` | `chain(java.io.Reader rdr)` Chain this task as a reader.
    `void` | `execute()` Executes the task.
    `void` | `setCr(FixCRLF.AddAsisRemove attr)` Deprecated. since 1.4.x. Use `setEol` instead.
    `void` | `setDestdir(java.io.File destDir)` Set the destination where the fixed files should be placed.
    `void` | `setEncoding(java.lang.String encoding)` Specifies the encoding Ant expects the files to be in--defaults to the platforms default encoding.
    `void` | `setEof(FixCRLF.AddAsisRemove attr)` Specify how DOS EOF (control-z) characters are to be handled.
    `void` | `setEol(FixCRLF.CrLf attr)` Specify how EndOfLine characters are to be handled.
    `void` | `setFile(java.io.File file)` Set a single file to convert.
    `void` | `setFixlast(boolean fixlast)` Specify whether a missing EOL will be added to the final line of a file.
    `void` | `setJavafiles(boolean javafiles)` Set to true if modifying Java source files.
    `void` | `setOutputEncoding(java.lang.String outputEncoding)` Specifies the encoding that the files are to be written in--same as input encoding by default.
    `void` | `setPreserveLastModified(boolean preserve)` Set whether to preserve the last modified time as the original files.
    `void` | `setSrcdir(java.io.File srcDir)` Set the source dir to find the source text files.
    `void` | `setTab(FixCRLF.AddAsisRemove attr)` Specify how tab characters are to be handled.
    `void` | `setTablength(int tlength)` Specify tab length in characters.

    - ### Methods inherited from class org.apache.tools.ant.taskdefs.MatchingTask

      `add, addAnd, addContains, addContainsRegexp, addCustom, addDate, addDepend, addDepth, addDifferent, addFilename, addMajority, addModified, addNone, addNot, addOr, addPresent, addSelector, addSize, addType, appendSelector, createExclude, createExcludesFile, createInclude, createIncludesFile, createPatternSet, getDirectoryScanner, getImplicitFileSet, getSelectors, hasSelectors, selectorCount, selectorElements, setCaseSensitive, setDefaultexcludes, setExcludes, setExcludesfile, setFollowSymlinks, setIncludes, setIncludesfile, setProject, XsetIgnore, XsetItems`

    - ### Methods inherited from class org.apache.tools.ant.Task

      `bindToOwner, getOwningTarget, getRuntimeConfigurableWrapper, getTaskName, getTaskType, getWrapper, handleErrorFlush, handleErrorOutput, handleFlush, handleInput, handleOutput, init, isInvalid, log, log, log, log, maybeConfigure, perform, reconfigure, setOwningTarget, setRuntimeConfigurableWrapper, setTaskName, setTaskType`

    - ### Methods inherited from class org.apache.tools.ant.ProjectComponent

      `clone, getDescription, getLocation, getProject, setDescription, setLocation`

    - ### Methods inherited from class java.lang.Object

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

- - ### Field Detail

    - #### ERROR_FILE_AND_SRCDIR

          public static final java.lang.String ERROR_FILE_AND_SRCDIR

      error string for using srcdir and file
      See Also:
        Constant Field Values

  - ### Constructor Detail

    - #### FixCRLF

          public FixCRLF()

  - ### Method Detail

    - #### chain

          public final java.io.Reader chain(java.io.Reader rdr)

      Chain this task as a reader.
      Specified by:
        `chain` in interface `ChainableReader`
      Parameters:
        `rdr` - Reader to chain.
      Returns:
        a Reader.
      Since:
        Ant 1.7?

    - #### setSrcdir

          public void setSrcdir(java.io.File srcDir)

      Set the source dir to find the source text files.
      Parameters:
        `srcDir` - the source directory.

    - #### setDestdir

          public void setDestdir(java.io.File destDir)

      Set the destination where the fixed files should be placed. Default is to replace the original file.
      Parameters:
        `destDir` - the destination directory.

    - #### setJavafiles

          public void setJavafiles(boolean javafiles)

      Set to true if modifying Java source files.
      Parameters:
        `javafiles` - whether modifying Java files.

    - #### setFile

          public void setFile(java.io.File file)

      Set a single file to convert.
      Parameters:
        `file` - the file to convert.
      Since:
        Ant 1.6.3

    - #### setEol

          public void setEol(FixCRLF.CrLf attr)

      Specify how EndOfLine characters are to be handled.
      Parameters:
        `attr` - valid values:
        - asis: leave line endings alone
        - cr: convert line endings to CR
        - lf: convert line endings to LF
        - crlf: convert line endings to CRLF

    - #### setCr

          public void setCr(FixCRLF.AddAsisRemove attr)

      Deprecated. since 1.4.x. Use `setEol` instead.
      Specify how carriage return (CR) characters are to be handled.
      Parameters:
        `attr` - valid values:
        - add: ensure that there is a CR before every LF
        - asis: leave CR characters alone
        - remove: remove all CR characters

    - #### setTab

          public void setTab(FixCRLF.AddAsisRemove attr)

      Specify how tab characters are to be handled.
      Parameters:
        `attr` - valid values:
        - add: convert sequences of spaces which span a tab stop to tabs
        - asis: leave tab and space characters alone
        - remove: convert tabs to spaces

    - #### setTablength

          public void setTablength(int tlength)
                            throws BuildException

      Specify tab length in characters.
      Parameters:
        `tlength` - specify the length of tab in spaces.
      Throws:
        `BuildException` - on error.

    - #### setEof

          public void setEof(FixCRLF.AddAsisRemove attr)

      Specify how DOS EOF (control-z) characters are to be handled.
      Parameters:
        `attr` - valid values:
        - add: ensure that there is an eof at the end of the file
        - asis: leave eof characters alone
        - remove: remove any eof character found at the end

    - #### setEncoding

          public void setEncoding(java.lang.String encoding)

      Specifies the encoding Ant expects the files to be in--defaults to the platforms default encoding.
      Parameters:
        `encoding` - String encoding name.

    - #### setOutputEncoding

          public void setOutputEncoding(java.lang.String outputEncoding)

      Specifies the encoding that the files are to be written in--same as input encoding by default.
      Parameters:
        `outputEncoding` - String outputEncoding name.

    - #### setFixlast

          public void setFixlast(boolean fixlast)

      Specify whether a missing EOL will be added to the final line of a file.
      Parameters:
        `fixlast` - whether to fix the last line.

    - #### setPreserveLastModified

          public void setPreserveLastModified(boolean preserve)

      Set whether to preserve the last modified time as the original files.
      Parameters:
        `preserve` - true if timestamps should be preserved.
      Since:
        Ant 1.6.3

    - #### execute

          public void execute()
                       throws BuildException

      Executes the task.
      Overrides:
        `execute` in class `Task`
      Throws:
        `BuildException` - on error.