clojure.java.io
This file defines polymorphic I/O utility functions for Clojure.
This file defines polymorphic I/O utility functions for Clojure.
as-relative-pathclj
(as-relative-path x)Take an as-file-able thing and return a string if it is a relative path, else IllegalArgumentException.
Take an as-file-able thing and return a string if it is a relative path, else IllegalArgumentException.
Coercionscljprotocol
Coerce between various 'resource-namish' things.
Coerce between various 'resource-namish' things.
as-fileclj
(as-file x)Coerce argument to a file.
Coerce argument to a file.
as-urlclj
(as-url x)Coerce argument to a URL.
Coerce argument to a URL.
copyclj
(copy input output & opts)Copies input to output. Returns nil or throws IOException. Input may be an InputStream, Reader, File, byte[], char[], or String. Output may be an OutputStream, Writer, or File.
Options are key/value pairs and may be one of
:buffer-size buffer size to use, default is 1024. :encoding encoding to use if converting between byte and char streams.
Does not close any streams except those it opens itself (on a File).
Copies input to output. Returns nil or throws IOException.
Input may be an InputStream, Reader, File, byte[], char[], or String.
Output may be an OutputStream, Writer, or File.
Options are key/value pairs and may be one of
:buffer-size buffer size to use, default is 1024.
:encoding encoding to use if converting between
byte and char streams.
Does not close any streams except those it opens itself
(on a File).delete-fileclj
(delete-file f & [silently])Delete file f. If silently is nil or false, raise an exception on failure, else return the value of silently.
Delete file f. If silently is nil or false, raise an exception on failure, else return the value of silently.
fileclj
(file arg)(file parent child)(file parent child & more)Returns a java.io.File, passing each arg to as-file. Multiple-arg versions treat the first argument as parent and subsequent args as children relative to the parent.
Returns a java.io.File, passing each arg to as-file. Multiple-arg versions treat the first argument as parent and subsequent args as children relative to the parent.
input-streamclj
(input-stream x & opts)Attempts to coerce its argument into an open java.io.InputStream. Default implementations always return a java.io.BufferedInputStream.
Default implementations are defined for InputStream, File, URI, URL, Socket, byte array, and String arguments.
If the argument is a String, it tries to resolve it first as a URI, then as a local file name. URIs with a 'file' protocol are converted to local file names.
Should be used inside with-open to ensure the InputStream is properly closed.
Attempts to coerce its argument into an open java.io.InputStream. Default implementations always return a java.io.BufferedInputStream. Default implementations are defined for InputStream, File, URI, URL, Socket, byte array, and String arguments. If the argument is a String, it tries to resolve it first as a URI, then as a local file name. URIs with a 'file' protocol are converted to local file names. Should be used inside with-open to ensure the InputStream is properly closed.
IOFactorycljprotocol
Factory functions that create ready-to-use, buffered versions of the various Java I/O stream types, on top of anything that can be unequivocally converted to the requested kind of stream.
Common options include
:append true to open stream in append mode :encoding string name of encoding to use, e.g. "UTF-8".
Callers should generally prefer the higher level API provided by reader, writer, input-stream, and output-stream.
Factory functions that create ready-to-use, buffered versions of the various Java I/O stream types, on top of anything that can be unequivocally converted to the requested kind of stream. Common options include :append true to open stream in append mode :encoding string name of encoding to use, e.g. "UTF-8". Callers should generally prefer the higher level API provided by reader, writer, input-stream, and output-stream.
make-input-streamclj
(make-input-stream x opts)Creates a BufferedInputStream. See also IOFactory docs.
Creates a BufferedInputStream. See also IOFactory docs.
make-output-streamclj
(make-output-stream x opts)Creates a BufferedOutputStream. See also IOFactory docs.
Creates a BufferedOutputStream. See also IOFactory docs.
make-readerclj
(make-reader x opts)Creates a BufferedReader. See also IOFactory docs.
Creates a BufferedReader. See also IOFactory docs.
make-writerclj
(make-writer x opts)Creates a BufferedWriter. See also IOFactory docs.
Creates a BufferedWriter. See also IOFactory docs.
make-parentsclj
(make-parents f & more)Given the same arg(s) as for file, creates all parent directories of the file they represent.
Given the same arg(s) as for file, creates all parent directories of the file they represent.
output-streamclj
(output-stream x & opts)Attempts to coerce its argument into an open java.io.OutputStream. Default implementations always return a java.io.BufferedOutputStream.
Default implementations are defined for OutputStream, File, URI, URL, Socket, and String arguments.
If the argument is a String, it tries to resolve it first as a URI, then as a local file name. URIs with a 'file' protocol are converted to local file names.
Should be used inside with-open to ensure the OutputStream is properly closed.
Attempts to coerce its argument into an open java.io.OutputStream. Default implementations always return a java.io.BufferedOutputStream. Default implementations are defined for OutputStream, File, URI, URL, Socket, and String arguments. If the argument is a String, it tries to resolve it first as a URI, then as a local file name. URIs with a 'file' protocol are converted to local file names. Should be used inside with-open to ensure the OutputStream is properly closed.
readerclj
(reader x & opts)Attempts to coerce its argument into an open java.io.Reader. Default implementations always return a java.io.BufferedReader.
Default implementations are provided for Reader, BufferedReader, InputStream, File, URI, URL, Socket, byte arrays, character arrays, and String.
If argument is a String, it tries to resolve it first as a URI, then as a local file name. URIs with a 'file' protocol are converted to local file names.
Should be used inside with-open to ensure the Reader is properly closed.
Attempts to coerce its argument into an open java.io.Reader. Default implementations always return a java.io.BufferedReader. Default implementations are provided for Reader, BufferedReader, InputStream, File, URI, URL, Socket, byte arrays, character arrays, and String. If argument is a String, it tries to resolve it first as a URI, then as a local file name. URIs with a 'file' protocol are converted to local file names. Should be used inside with-open to ensure the Reader is properly closed.
resourceclj
(resource n)(resource n loader)Returns the URL for a named resource. Use the context class loader if no loader is specified.
Returns the URL for a named resource. Use the context class loader if no loader is specified.
writerclj
(writer x & opts)Attempts to coerce its argument into an open java.io.Writer. Default implementations always return a java.io.BufferedWriter.
Default implementations are provided for Writer, BufferedWriter, OutputStream, File, URI, URL, Socket, and String.
If the argument is a String, it tries to resolve it first as a URI, then as a local file name. URIs with a 'file' protocol are converted to local file names.
Should be used inside with-open to ensure the Writer is properly closed.
Attempts to coerce its argument into an open java.io.Writer. Default implementations always return a java.io.BufferedWriter. Default implementations are provided for Writer, BufferedWriter, OutputStream, File, URI, URL, Socket, and String. If the argument is a String, it tries to resolve it first as a URI, then as a local file name. URIs with a 'file' protocol are converted to local file names. Should be used inside with-open to ensure the Writer is properly closed.
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