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<h1 class="nopad">Table of Contents</h1>
<div style="margin-left: 1em;" class="toc-section">
<a href="#toc0">Overview</a>
<div style="margin-left: 1em;" class="toc-entry">
<a href="#clojure.contrib.duck-streams/*append-to-writer*">*append-to-writer*</a>
</div><div style="margin-left: 1em;" class="toc-entry">
<a href="#clojure.contrib.duck-streams/*buffer-size*">*buffer-size*</a>
</div><div style="margin-left: 1em;" class="toc-entry">
<a href="#clojure.contrib.duck-streams/*byte-array-type*">*byte-array-type*</a>
</div><div style="margin-left: 1em;" class="toc-entry">
<a href="#clojure.contrib.duck-streams/*default-encoding*">*default-encoding*</a>
</div><div style="margin-left: 1em;" class="toc-entry">
<a href="#clojure.contrib.duck-streams/append-spit">append-spit</a>
</div><div style="margin-left: 1em;" class="toc-entry">
<a href="#clojure.contrib.duck-streams/append-writer">append-writer</a>
</div><div style="margin-left: 1em;" class="toc-entry">
<a href="#clojure.contrib.duck-streams/copy">copy</a>
</div><div style="margin-left: 1em;" class="toc-entry">
<a href="#clojure.contrib.duck-streams/file-str">file-str</a>
</div><div style="margin-left: 1em;" class="toc-entry">
<a href="#clojure.contrib.duck-streams/make-parents">make-parents</a>
</div><div style="margin-left: 1em;" class="toc-entry">
<a href="#clojure.contrib.duck-streams/pwd">pwd</a>
</div><div style="margin-left: 1em;" class="toc-entry">
<a href="#clojure.contrib.duck-streams/read-lines">read-lines</a>
</div><div style="margin-left: 1em;" class="toc-entry">
<a href="#clojure.contrib.duck-streams/reader">reader</a>
</div><div style="margin-left: 1em;" class="toc-entry">
<a href="#clojure.contrib.duck-streams/slurp*">slurp*</a>
</div><div style="margin-left: 1em;" class="toc-entry">
<a href="#clojure.contrib.duck-streams/spit">spit</a>
</div><div style="margin-left: 1em;" class="toc-entry">
<a href="#clojure.contrib.duck-streams/to-byte-array">to-byte-array</a>
</div><div style="margin-left: 1em;" class="toc-entry">
<a href="#clojure.contrib.duck-streams/with-in-reader">with-in-reader</a>
</div><div style="margin-left: 1em;" class="toc-entry">
<a href="#clojure.contrib.duck-streams/with-out-append-writer">with-out-append-writer</a>
</div><div style="margin-left: 1em;" class="toc-entry">
<a href="#clojure.contrib.duck-streams/with-out-writer">with-out-writer</a>
</div><div style="margin-left: 1em;" class="toc-entry">
<a href="#clojure.contrib.duck-streams/write-lines">write-lines</a>
</div><div style="margin-left: 1em;" class="toc-entry">
<a href="#clojure.contrib.duck-streams/writer">writer</a>
</div>
<br />
</div>
</div>
</div>
<div id="content-tag"><h1 id="overview">API for <span id="namespace-name">duck-streams</span>
- <span id="header-project">clojure-contrib</span> <span id="header-version">v1.2</span> (<span id="header-status">stable</span>)
</h1>
<span id="author-line">by <span id="author-name">Stuart Sierra</span><br /></span>
<br />Full namespace name: <span id="long-name">clojure.contrib.duck-streams</span>
<p></p>
<h2>Overview</h2>
<pre id="namespace-docstr">This file defines "duck-typed" I/O utility functions for Clojure.
The 'reader' and 'writer' functions will open and return an
instance of java.io.BufferedReader and java.io.PrintWriter,
respectively, for a variety of argument types -- filenames as
strings, URLs, java.io.File's, etc. 'reader' even works on http
URLs.
Note: this is not really "duck typing" as implemented in languages
like Ruby. A better name would have been "do-what-I-mean-streams"
or "just-give-me-a-stream", but ducks are funnier.</pre>
<span class="ns-deprecated"><span id="content">Deprecated since clojure-contrib version 1.2</span><br /></span>
<br />
<h2>Public Variables and Functions</h2>
<div id="var-entry">
<br />
<hr />
<h2 id="clojure.contrib.duck-streams/*append-to-writer*">*append-to-writer*</h2>
<span id="var-type">var</span><br />
<pre id="var-usage"></pre>
<pre id="var-docstr">If true, writer and spit will open files in append mode.
Defaults to false. Use append-writer or append-spit.</pre>
<a href="http://github.com/clojure/clojure-contrib/blob/aa3f018f65006c78b08703e7adef04b7f39e1542/src/main/clojure/clojure/contrib/duck_streams.clj#L146" id="var-source">Source</a>
</div><div id="var-entry">
<br />
<hr />
<h2 id="clojure.contrib.duck-streams/*buffer-size*">*buffer-size*</h2>
<span id="var-type">var</span><br />
<pre id="var-usage"></pre>
<pre id="var-docstr">Size, in bytes or characters, of the buffer used when
copying streams.</pre>
<a href="http://github.com/clojure/clojure-contrib/blob/aa3f018f65006c78b08703e7adef04b7f39e1542/src/main/clojure/clojure/contrib/duck_streams.clj#L78" id="var-source">Source</a>
</div><div id="var-entry">
<br />
<hr />
<h2 id="clojure.contrib.duck-streams/*byte-array-type*">*byte-array-type*</h2>
<span id="var-type">var</span><br />
<pre id="var-usage"></pre>
<pre id="var-docstr">Type object for a Java primitive byte array.</pre>
<a href="http://github.com/clojure/clojure-contrib/blob/aa3f018f65006c78b08703e7adef04b7f39e1542/src/main/clojure/clojure/contrib/duck_streams.clj#L83" id="var-source">Source</a>
</div><div id="var-entry">
<br />
<hr />
<h2 id="clojure.contrib.duck-streams/*default-encoding*">*default-encoding*</h2>
<span id="var-type">var</span><br />
<pre id="var-usage"></pre>
<pre id="var-docstr">Name of the default encoding to use when reading & writing.
Default is UTF-8.</pre>
<a href="http://github.com/clojure/clojure-contrib/blob/aa3f018f65006c78b08703e7adef04b7f39e1542/src/main/clojure/clojure/contrib/duck_streams.clj#L72" id="var-source">Source</a>
</div><div id="var-entry">
<br />
<hr />
<h2 id="clojure.contrib.duck-streams/append-spit">append-spit</h2>
<span id="var-type">function</span><br />
<pre id="var-usage">Usage: (append-spit f content)
</pre>
<pre id="var-docstr">Like spit but appends to file.</pre>
<a href="http://github.com/clojure/clojure-contrib/blob/aa3f018f65006c78b08703e7adef04b7f39e1542/src/main/clojure/clojure/contrib/duck_streams.clj#L265" id="var-source">Source</a>
</div><div id="var-entry">
<br />
<hr />
<h2 id="clojure.contrib.duck-streams/append-writer">append-writer</h2>
<span id="var-type">function</span><br />
<pre id="var-usage">Usage: (append-writer x)
</pre>
<pre id="var-docstr">Like writer but opens file for appending. Does not work on streams
that are already open.</pre>
<a href="http://github.com/clojure/clojure-contrib/blob/aa3f018f65006c78b08703e7adef04b7f39e1542/src/main/clojure/clojure/contrib/duck_streams.clj#L217" id="var-source">Source</a>
</div><div id="var-entry">
<br />
<hr />
<h2 id="clojure.contrib.duck-streams/copy">copy</h2>
<span id="var-type">multimethod</span><br />
<pre id="var-usage">Usage: (copy input output)
</pre>
<pre id="var-docstr">Copies input to output. Returns nil.
Input may be an InputStream, Reader, File, byte[], or String.
Output may be an OutputStream, Writer, or File.
Does not close any streams except those it opens itself
(on a File).
Writing a File fails if the parent directory does not exist.</pre>
<a href="http://github.com/clojure/clojure-contrib/blob/aa3f018f65006c78b08703e7adef04b7f39e1542/src/main/clojure/clojure/contrib/duck_streams.clj#L301" id="var-source">Source</a>
</div><div id="var-entry">
<br />
<hr />
<h2 id="clojure.contrib.duck-streams/file-str">file-str</h2>
<span id="var-type">function</span><br />
<pre id="var-usage">Usage: (file-str & args)
</pre>
<pre id="var-docstr">Concatenates args as strings and returns a java.io.File. Replaces
all / and \ with File/separatorChar. Replaces ~ at the start of
the path with the user.home system property.</pre>
<a href="http://github.com/clojure/clojure-contrib/blob/aa3f018f65006c78b08703e7adef04b7f39e1542/src/main/clojure/clojure/contrib/duck_streams.clj#L88" id="var-source">Source</a>
</div><div id="var-entry">
<br />
<hr />
<h2 id="clojure.contrib.duck-streams/make-parents">make-parents</h2>
<span id="var-type">function</span><br />
<pre id="var-usage">Usage: (make-parents file)
</pre>
<pre id="var-docstr">Creates all parent directories of file.</pre>
<a href="http://github.com/clojure/clojure-contrib/blob/aa3f018f65006c78b08703e7adef04b7f39e1542/src/main/clojure/clojure/contrib/duck_streams.clj#L388" id="var-source">Source</a>
</div><div id="var-entry">
<br />
<hr />
<h2 id="clojure.contrib.duck-streams/pwd">pwd</h2>
<span id="var-type">function</span><br />
<pre id="var-usage">Usage: (pwd)
</pre>
<pre id="var-docstr">Returns current working directory as a String. (Like UNIX 'pwd'.)
Note: In Java, you cannot change the current working directory.</pre>
<a href="http://github.com/clojure/clojure-contrib/blob/aa3f018f65006c78b08703e7adef04b7f39e1542/src/main/clojure/clojure/contrib/duck_streams.clj#L271" id="var-source">Source</a>
</div><div id="var-entry">
<br />
<hr />
<h2 id="clojure.contrib.duck-streams/read-lines">read-lines</h2>
<span id="var-type">function</span><br />
<pre id="var-usage">Usage: (read-lines f)
</pre>
<pre id="var-docstr">Like clojure.core/line-seq but opens f with reader. Automatically
closes the reader AFTER YOU CONSUME THE ENTIRE SEQUENCE.</pre>
<a href="http://github.com/clojure/clojure-contrib/blob/aa3f018f65006c78b08703e7adef04b7f39e1542/src/main/clojure/clojure/contrib/duck_streams.clj#L236" id="var-source">Source</a>
</div><div id="var-entry">
<br />
<hr />
<h2 id="clojure.contrib.duck-streams/reader">reader</h2>
<span id="var-type">multimethod</span><br />
<pre id="var-usage">Usage: (reader x)
</pre>
<pre id="var-docstr">Attempts to coerce its argument into an open
java.io.BufferedReader. Argument may be an instance of Reader,
BufferedReader, InputStream, File, URI, URL, Socket, or 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. Uses *default-encoding* as the text encoding.
Should be used inside with-open to ensure the Reader is properly
closed.</pre>
<a href="http://github.com/clojure/clojure-contrib/blob/aa3f018f65006c78b08703e7adef04b7f39e1542/src/main/clojure/clojure/contrib/duck_streams.clj#L102" id="var-source">Source</a>
</div><div id="var-entry">
<br />
<hr />
<h2 id="clojure.contrib.duck-streams/slurp*">slurp*</h2>
<span id="var-type">function</span><br />
<pre id="var-usage">Usage: (slurp* f)
</pre>
<pre id="var-docstr">Like clojure.core/slurp but opens f with reader.</pre>
<a href="http://github.com/clojure/clojure-contrib/blob/aa3f018f65006c78b08703e7adef04b7f39e1542/src/main/clojure/clojure/contrib/duck_streams.clj#L247" id="var-source">Source</a>
</div><div id="var-entry">
<br />
<hr />
<h2 id="clojure.contrib.duck-streams/spit">spit</h2>
<span id="var-type">function</span><br />
<pre id="var-usage">Usage: (spit f content)
</pre>
<pre id="var-docstr">Opposite of slurp. Opens f with writer, writes content, then
closes f.</pre>
<a href="http://github.com/clojure/clojure-contrib/blob/aa3f018f65006c78b08703e7adef04b7f39e1542/src/main/clojure/clojure/contrib/duck_streams.clj#L258" id="var-source">Source</a>
</div><div id="var-entry">
<br />
<hr />
<h2 id="clojure.contrib.duck-streams/to-byte-array">to-byte-array</h2>
<span id="var-type">multimethod</span><br />
<pre id="var-usage">Usage: (to-byte-array arg)
</pre>
<pre id="var-docstr">Converts argument into a Java byte array. Argument may be
a String, File, InputStream, or Reader. If the argument is already
a byte array, returns it.</pre>
<a href="http://github.com/clojure/clojure-contrib/blob/aa3f018f65006c78b08703e7adef04b7f39e1542/src/main/clojure/clojure/contrib/duck_streams.clj#L393" id="var-source">Source</a>
</div><div id="var-entry">
<br />
<hr />
<h2 id="clojure.contrib.duck-streams/with-in-reader">with-in-reader</h2>
<span id="var-type">macro</span><br />
<pre id="var-usage">Usage: (with-in-reader f & body)
</pre>
<pre id="var-docstr">Opens a PushbackReader on f, binds it to *in*, and evaluates body.</pre>
<a href="http://github.com/clojure/clojure-contrib/blob/aa3f018f65006c78b08703e7adef04b7f39e1542/src/main/clojure/clojure/contrib/duck_streams.clj#L294" id="var-source">Source</a>
</div><div id="var-entry">
<br />
<hr />
<h2 id="clojure.contrib.duck-streams/with-out-append-writer">with-out-append-writer</h2>
<span id="var-type">macro</span><br />
<pre id="var-usage">Usage: (with-out-append-writer f & body)
</pre>
<pre id="var-docstr">Like with-out-writer but appends to file.</pre>
<a href="http://github.com/clojure/clojure-contrib/blob/aa3f018f65006c78b08703e7adef04b7f39e1542/src/main/clojure/clojure/contrib/duck_streams.clj#L287" id="var-source">Source</a>
</div><div id="var-entry">
<br />
<hr />
<h2 id="clojure.contrib.duck-streams/with-out-writer">with-out-writer</h2>
<span id="var-type">macro</span><br />
<pre id="var-usage">Usage: (with-out-writer f & body)
</pre>
<pre id="var-docstr">Opens a writer on f, binds it to *out*, and evalutes body.
Anything printed within body will be written to f.</pre>
<a href="http://github.com/clojure/clojure-contrib/blob/aa3f018f65006c78b08703e7adef04b7f39e1542/src/main/clojure/clojure/contrib/duck_streams.clj#L279" id="var-source">Source</a>
</div><div id="var-entry">
<br />
<hr />
<h2 id="clojure.contrib.duck-streams/write-lines">write-lines</h2>
<span id="var-type">function</span><br />
<pre id="var-usage">Usage: (write-lines f lines)
</pre>
<pre id="var-docstr">Writes lines (a seq) to f, separated by newlines. f is opened with
writer, and automatically closed at the end of the sequence.</pre>
<a href="http://github.com/clojure/clojure-contrib/blob/aa3f018f65006c78b08703e7adef04b7f39e1542/src/main/clojure/clojure/contrib/duck_streams.clj#L225" id="var-source">Source</a>
</div><div id="var-entry">
<br />
<hr />
<h2 id="clojure.contrib.duck-streams/writer">writer</h2>
<span id="var-type">multimethod</span><br />
<pre id="var-usage">Usage: (writer x)
</pre>
<pre id="var-docstr">Attempts to coerce its argument into an open java.io.PrintWriter
wrapped around a java.io.BufferedWriter. Argument may be an
instance of Writer, PrintWriter, BufferedWriter, OutputStream, File,
URI, URL, Socket, or 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 Writer is properly
closed.</pre>
<a href="http://github.com/clojure/clojure-contrib/blob/aa3f018f65006c78b08703e7adef04b7f39e1542/src/main/clojure/clojure/contrib/duck_streams.clj#L153" id="var-source">Source</a>
</div>
</div>
</div>
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