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281 lines
9.6 KiB
281 lines
9.6 KiB
<!DOCTYPE html>
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<meta name="theme-color" content="#375EAB">
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<title>charset - The Go Programming Language</title>
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<link type="text/css" rel="stylesheet" href="../../../../../../lib/godoc/style.css">
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<link rel="stylesheet" href="../../../../../../lib/godoc/jquery.treeview.css">
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<script type="text/javascript">window.initFuncs = [];</script>
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</head>
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<body>
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<div id='lowframe' style="position: fixed; bottom: 0; left: 0; height: 0; width: 100%; border-top: thin solid grey; background-color: white; overflow: auto;">
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...
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</div><!-- #lowframe -->
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<div id="topbar" class="wide"><div class="container">
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<div class="top-heading" id="heading-wide"><a href="http://localhost:6060/">The Go Programming Language</a></div>
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<div class="top-heading" id="heading-narrow"><a href="http://localhost:6060/">Go</a></div>
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<a href="index.html#" id="menu-button"><span id="menu-button-arrow">▽</span></a>
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<form method="GET" action="http://localhost:6060/search">
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<div id="menu">
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<a href="http://localhost:6060/doc/">Documents</a>
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<a href="http://localhost:6060/pkg/">Packages</a>
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<a href="http://localhost:6060/project/">The Project</a>
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<a href="http://localhost:6060/help/">Help</a>
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<a href="http://localhost:6060/blog/">Blog</a>
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<input type="text" id="search" name="q" class="inactive" value="Search" placeholder="Search">
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</div>
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</form>
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</div></div>
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<div id="page" class="wide">
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<div class="container">
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<h1>Package charset</h1>
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<div id="nav"></div>
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<!--
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Copyright 2009 The Go Authors. All rights reserved.
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Use of this source code is governed by a BSD-style
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license that can be found in the LICENSE file.
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-->
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<!--
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Note: Static (i.e., not template-generated) href and id
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attributes start with "pkg-" to make it impossible for
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them to conflict with generated attributes (some of which
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correspond to Go identifiers).
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-->
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<script type='text/javascript'>
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document.ANALYSIS_DATA = null;
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document.CALLGRAPH = null;
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</script>
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<div id="short-nav">
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<dl>
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<dd><code>import "golang.org/x/net/html/charset"</code></dd>
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</dl>
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<dl>
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<dd><a href="index.html#pkg-overview" class="overviewLink">Overview</a></dd>
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<dd><a href="index.html#pkg-index" class="indexLink">Index</a></dd>
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</dl>
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</div>
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<!-- The package's Name is printed as title by the top-level template -->
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<div id="pkg-overview" class="toggleVisible">
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<div class="collapsed">
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<h2 class="toggleButton" title="Click to show Overview section">Overview ▹</h2>
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</div>
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<div class="expanded">
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<h2 class="toggleButton" title="Click to hide Overview section">Overview ▾</h2>
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<p>
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Package charset provides common text encodings for HTML documents.
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</p>
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<p>
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The mapping from encoding labels to encodings is defined at
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<a href="https://encoding.spec.whatwg.org/">https://encoding.spec.whatwg.org/</a>.
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</p>
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</div>
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</div>
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<div id="pkg-index" class="toggleVisible">
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<div class="collapsed">
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<h2 class="toggleButton" title="Click to show Index section">Index ▹</h2>
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</div>
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<div class="expanded">
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<h2 class="toggleButton" title="Click to hide Index section">Index ▾</h2>
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<!-- Table of contents for API; must be named manual-nav to turn off auto nav. -->
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<div id="manual-nav">
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<dl>
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<dd><a href="index.html#DetermineEncoding">func DetermineEncoding(content []byte, contentType string) (e encoding.Encoding, name string, certain bool)</a></dd>
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<dd><a href="index.html#Lookup">func Lookup(label string) (e encoding.Encoding, name string)</a></dd>
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<dd><a href="index.html#NewReader">func NewReader(r io.Reader, contentType string) (io.Reader, error)</a></dd>
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<dd><a href="index.html#NewReaderLabel">func NewReaderLabel(label string, input io.Reader) (io.Reader, error)</a></dd>
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</dl>
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</div><!-- #manual-nav -->
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<h4>Package files</h4>
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<p>
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<span style="font-size:90%">
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<a href="http://localhost:6060/src/golang.org/x/net/html/charset/charset.go">charset.go</a>
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</span>
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</p>
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</div><!-- .expanded -->
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</div><!-- #pkg-index -->
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<div id="pkg-callgraph" class="toggle" style="display: none">
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<div class="collapsed">
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<h2 class="toggleButton" title="Click to show Internal Call Graph section">Internal call graph ▹</h2>
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</div> <!-- .expanded -->
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<div class="expanded">
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<h2 class="toggleButton" title="Click to hide Internal Call Graph section">Internal call graph ▾</h2>
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<p>
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In the call graph viewer below, each node
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is a function belonging to this package
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and its children are the functions it
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calls—perhaps dynamically.
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</p>
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<p>
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The root nodes are the entry points of the
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package: functions that may be called from
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outside the package.
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There may be non-exported or anonymous
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functions among them if they are called
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dynamically from another package.
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</p>
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<p>
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Click a node to visit that function's source code.
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From there you can visit its callers by
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clicking its declaring <code>func</code>
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token.
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</p>
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<p>
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Functions may be omitted if they were
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determined to be unreachable in the
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particular programs or tests that were
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analyzed.
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</p>
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<!-- Zero means show all package entry points. -->
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<ul style="margin-left: 0.5in" id="callgraph-0" class="treeview"></ul>
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</div>
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</div> <!-- #pkg-callgraph -->
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<h2 id="DetermineEncoding">func <a href="http://localhost:6060/src/golang.org/x/net/html/charset/charset.go?s=1729:1836#L42">DetermineEncoding</a></h2>
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<pre>func DetermineEncoding(content []<a href="../../../../../builtin/index.html#byte">byte</a>, contentType <a href="../../../../../builtin/index.html#string">string</a>) (e <a href="../../../text/encoding/index.html">encoding</a>.<a href="../../../text/encoding/index.html#Encoding">Encoding</a>, name <a href="../../../../../builtin/index.html#string">string</a>, certain <a href="../../../../../builtin/index.html#bool">bool</a>)</pre>
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<p>
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DetermineEncoding determines the encoding of an HTML document by examining
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up to the first 1024 bytes of content and the declared Content-Type.
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</p>
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<p>
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See <a href="http://www.whatwg.org/specs/web-apps/current-work/multipage/parsing.html#determining-the-character-encoding">http://www.whatwg.org/specs/web-apps/current-work/multipage/parsing.html#determining-the-character-encoding</a>
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</p>
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<h2 id="Lookup">func <a href="http://localhost:6060/src/golang.org/x/net/html/charset/charset.go?s=981:1041#L21">Lookup</a></h2>
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<pre>func Lookup(label <a href="../../../../../builtin/index.html#string">string</a>) (e <a href="../../../text/encoding/index.html">encoding</a>.<a href="../../../text/encoding/index.html#Encoding">Encoding</a>, name <a href="../../../../../builtin/index.html#string">string</a>)</pre>
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<p>
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Lookup returns the encoding with the specified label, and its canonical
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name. It returns nil and the empty string if label is not one of the
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standard encodings for HTML. Matching is case-insensitive and ignores
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leading and trailing whitespace. Encoders will use HTML escape sequences for
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runes that are not supported by the character set.
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</p>
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<h2 id="NewReader">func <a href="http://localhost:6060/src/golang.org/x/net/html/charset/charset.go?s=2989:3055#L98">NewReader</a></h2>
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<pre>func NewReader(r <a href="../../../../../io/index.html">io</a>.<a href="../../../../../io/index.html#Reader">Reader</a>, contentType <a href="../../../../../builtin/index.html#string">string</a>) (<a href="../../../../../io/index.html">io</a>.<a href="../../../../../io/index.html#Reader">Reader</a>, <a href="../../../../../builtin/index.html#error">error</a>)</pre>
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<p>
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NewReader returns an io.Reader that converts the content of r to UTF-8.
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It calls DetermineEncoding to find out what r's encoding is.
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</p>
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<h2 id="NewReaderLabel">func <a href="http://localhost:6060/src/golang.org/x/net/html/charset/charset.go?s=3740:3809#L121">NewReaderLabel</a></h2>
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<pre>func NewReaderLabel(label <a href="../../../../../builtin/index.html#string">string</a>, input <a href="../../../../../io/index.html">io</a>.<a href="../../../../../io/index.html#Reader">Reader</a>) (<a href="../../../../../io/index.html">io</a>.<a href="../../../../../io/index.html#Reader">Reader</a>, <a href="../../../../../builtin/index.html#error">error</a>)</pre>
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<p>
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NewReaderLabel returns a reader that converts from the specified charset to
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UTF-8. It uses Lookup to find the encoding that corresponds to label, and
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returns an error if Lookup returns nil. It is suitable for use as
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encoding/xml.Decoder's CharsetReader function.
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</p>
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<div id="footer">
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Build version go1.6.<br>
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Except as <a href="https://developers.google.com/site-policies#restrictions">noted</a>,
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the content of this page is licensed under the
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Creative Commons Attribution 3.0 License,
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and code is licensed under a <a href="http://localhost:6060/LICENSE">BSD license</a>.<br>
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<a href="http://localhost:6060/doc/tos.html">Terms of Service</a> |
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<a href="http://www.google.com/intl/en/policies/privacy/">Privacy Policy</a>
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</div>
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</div><!-- .container -->
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</div><!-- #page -->
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<!-- TODO(adonovan): load these from <head> using "defer" attribute? -->
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<script type="text/javascript" src="../../../../../../lib/godoc/jquery.js"></script>
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<script type="text/javascript" src="../../../../../../lib/godoc/jquery.treeview.js"></script>
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<script type="text/javascript" src="../../../../../../lib/godoc/jquery.treeview.edit.js"></script>
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<script type="text/javascript" src="../../../../../../lib/godoc/godocs.js"></script>
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</html>
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