<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <link rel="stylesheet" href="style.css" type="text/css"> <meta content="text/html; charset=iso-8859-1" http-equiv="Content-Type"> <link rel="Start" href="index.html"> <link rel="previous" href="UChar.html"> <link rel="next" href="Unzip.html"> <link rel="Up" href="index.html"> <link title="Index of types" rel=Appendix href="index_types.html"> <link title="Index of exceptions" rel=Appendix href="index_exceptions.html"> <link title="Index of values" rel=Appendix href="index_values.html"> <link title="Index of class methods" rel=Appendix href="index_methods.html"> <link title="Index of classes" rel=Appendix href="index_classes.html"> <link title="Index of modules" rel=Appendix href="index_modules.html"> <link title="Base64" rel="Chapter" href="Base64.html"> <link title="BitSet" rel="Chapter" href="BitSet.html"> <link title="Dllist" rel="Chapter" href="Dllist.html"> <link title="DynArray" rel="Chapter" href="DynArray.html"> <link title="Enum" rel="Chapter" href="Enum.html"> <link title="ExtArray" rel="Chapter" href="ExtArray.html"> <link title="ExtHashtbl" rel="Chapter" href="ExtHashtbl.html"> <link title="ExtList" rel="Chapter" href="ExtList.html"> <link title="ExtString" rel="Chapter" href="ExtString.html"> <link title="Global" rel="Chapter" href="Global.html"> <link title="IO" rel="Chapter" href="IO.html"> <link title="OptParse" rel="Chapter" href="OptParse.html"> <link title="Option" rel="Chapter" href="Option.html"> <link title="PMap" rel="Chapter" href="PMap.html"> <link title="RefList" rel="Chapter" href="RefList.html"> <link title="Std" rel="Chapter" href="Std.html"> <link title="UChar" rel="Chapter" href="UChar.html"> <link title="UTF8" rel="Chapter" href="UTF8.html"> <link title="Unzip" rel="Chapter" href="Unzip.html"><title>UTF8</title> </head> <body> <div class="navbar"><a class="pre" href="UChar.html" title="UChar">Previous</a> <a class="up" href="index.html" title="Index">Up</a> <a class="post" href="Unzip.html" title="Unzip">Next</a> </div> <h1>Module <a href="type_UTF8.html">UTF8</a></h1> <pre><span class="keyword">module</span> UTF8: <code class="code">sig</code> <a href="UTF8.html">..</a> <code class="code">end</code></pre><div class="info"> UTF-8 encoded Unicode strings. <p> The Module for UTF-8 encoded Unicode strings.<br> </div> <hr width="100%"> <pre><span id="TYPEt"><span class="keyword">type</span> <code class="type"></code>t</span> = <code class="type">string</code> </pre> <div class="info"> UTF-8 encoded Unicode strings. the type is normal string.<br> </div> <pre><span id="EXCEPTIONMalformed_code"><span class="keyword">exception</span> Malformed_code</span></pre> <pre><span id="VALvalidate"><span class="keyword">val</span> validate</span> : <code class="type"><a href="UTF8.html#TYPEt">t</a> -> unit</code></pre><div class="info"> <code class="code">validate s</code> Succeeds if s is valid UTF-8, otherwise raises Malformed_code. Other functions assume strings are valid UTF-8, so it is prudent to test their validity for strings from untrusted origins.<br> </div> <pre><span id="VALget"><span class="keyword">val</span> get</span> : <code class="type"><a href="UTF8.html#TYPEt">t</a> -> int -> <a href="UChar.html#TYPEuchar">UChar.uchar</a></code></pre><div class="info"> <code class="code">get s n</code> returns <code class="code">n</code>-th Unicode character of <code class="code">s</code>. The call requires O(n)-time.<br> </div> <pre><span id="VALinit"><span class="keyword">val</span> init</span> : <code class="type">int -> (int -> <a href="UChar.html#TYPEuchar">UChar.uchar</a>) -> <a href="UTF8.html#TYPEt">t</a></code></pre><div class="info"> <code class="code">init len f</code> returns a new string which contains <code class="code">len</code> Unicode characters. The i-th Unicode character is initialized by <code class="code">f i</code><br> </div> <pre><span id="VALlength"><span class="keyword">val</span> length</span> : <code class="type"><a href="UTF8.html#TYPEt">t</a> -> int</code></pre><div class="info"> <code class="code">length s</code> returns the number of Unicode characters contained in s<br> </div> <pre><span id="TYPEindex"><span class="keyword">type</span> <code class="type"></code>index</span> = <code class="type">int</code> </pre> <div class="info"> Positions in the string represented by the number of bytes from the head. The location of the first character is <code class="code">0</code><br> </div> <pre><span id="VALnth"><span class="keyword">val</span> nth</span> : <code class="type"><a href="UTF8.html#TYPEt">t</a> -> int -> <a href="UTF8.html#TYPEindex">index</a></code></pre><div class="info"> <code class="code">nth s n</code> returns the position of the <code class="code">n</code>-th Unicode character. The call requires O(n)-time<br> </div> <pre><span id="VALlast"><span class="keyword">val</span> last</span> : <code class="type"><a href="UTF8.html#TYPEt">t</a> -> <a href="UTF8.html#TYPEindex">index</a></code></pre><div class="info"> The position of the head of the last Unicode character.<br> </div> <pre><span id="VALlook"><span class="keyword">val</span> look</span> : <code class="type"><a href="UTF8.html#TYPEt">t</a> -> <a href="UTF8.html#TYPEindex">index</a> -> <a href="UChar.html#TYPEuchar">UChar.uchar</a></code></pre><div class="info"> <code class="code">look s i</code> returns the Unicode character of the location <code class="code">i</code> in the string <code class="code">s</code>.<br> </div> <pre><span id="VALout_of_range"><span class="keyword">val</span> out_of_range</span> : <code class="type"><a href="UTF8.html#TYPEt">t</a> -> <a href="UTF8.html#TYPEindex">index</a> -> bool</code></pre><div class="info"> <code class="code">out_of_range s i</code> tests whether <code class="code">i</code> is a position inside of <code class="code">s</code>.<br> </div> <pre><span id="VALcompare_index"><span class="keyword">val</span> compare_index</span> : <code class="type"><a href="UTF8.html#TYPEt">t</a> -> <a href="UTF8.html#TYPEindex">index</a> -> <a href="UTF8.html#TYPEindex">index</a> -> int</code></pre><div class="info"> <code class="code">compare_index s i1 i2</code> returns a value < 0 if <code class="code">i1</code> is the position located before <code class="code">i2</code>, 0 if <code class="code">i1</code> and <code class="code">i2</code> points the same location, a value > 0 if <code class="code">i1</code> is the position located after <code class="code">i2</code>.<br> </div> <pre><span id="VALnext"><span class="keyword">val</span> next</span> : <code class="type"><a href="UTF8.html#TYPEt">t</a> -> <a href="UTF8.html#TYPEindex">index</a> -> <a href="UTF8.html#TYPEindex">index</a></code></pre><div class="info"> <code class="code">next s i</code> returns the position of the head of the Unicode character located immediately after <code class="code">i</code>. If <code class="code">i</code> is inside of <code class="code">s</code>, the function always successes. If <code class="code">i</code> is inside of <code class="code">s</code> and there is no Unicode character after <code class="code">i</code>, the position outside <code class="code">s</code> is returned. If <code class="code">i</code> is not inside of <code class="code">s</code>, the behaviour is unspecified.<br> </div> <pre><span id="VALprev"><span class="keyword">val</span> prev</span> : <code class="type"><a href="UTF8.html#TYPEt">t</a> -> <a href="UTF8.html#TYPEindex">index</a> -> <a href="UTF8.html#TYPEindex">index</a></code></pre><div class="info"> <code class="code">prev s i</code> returns the position of the head of the Unicode character located immediately before <code class="code">i</code>. If <code class="code">i</code> is inside of <code class="code">s</code>, the function always successes. If <code class="code">i</code> is inside of <code class="code">s</code> and there is no Unicode character before <code class="code">i</code>, the position outside <code class="code">s</code> is returned. If <code class="code">i</code> is not inside of <code class="code">s</code>, the behaviour is unspecified.<br> </div> <pre><span id="VALmove"><span class="keyword">val</span> move</span> : <code class="type"><a href="UTF8.html#TYPEt">t</a> -> <a href="UTF8.html#TYPEindex">index</a> -> int -> <a href="UTF8.html#TYPEindex">index</a></code></pre><div class="info"> <code class="code">move s i n</code> returns <code class="code">n</code>-th Unicode character after <code class="code">i</code> if n >= 0, <code class="code">n</code>-th Unicode character before <code class="code">i</code> if n < 0. If there is no such character, the result is unspecified.<br> </div> <pre><span id="VALiter"><span class="keyword">val</span> iter</span> : <code class="type">(<a href="UChar.html#TYPEuchar">UChar.uchar</a> -> unit) -> <a href="UTF8.html#TYPEt">t</a> -> unit</code></pre><div class="info"> <code class="code">iter f s</code> applies <code class="code">f</code> to all Unicode characters in <code class="code">s</code>. The order of application is same to the order of the Unicode characters in <code class="code">s</code>.<br> </div> <pre><span id="VALcompare"><span class="keyword">val</span> compare</span> : <code class="type"><a href="UTF8.html#TYPEt">t</a> -> <a href="UTF8.html#TYPEt">t</a> -> int</code></pre><div class="info"> Code point comparison by the lexicographic order. <code class="code">compare s1 s2</code> returns a positive integer if <code class="code">s1</code> > <code class="code">s2</code>, 0 if <code class="code">s1</code> = <code class="code">s2</code>, a negative integer if <code class="code">s1</code> < <code class="code">s2</code>.<br> </div> <pre><span class="keyword">module</span> <a href="UTF8.Buf.html">Buf</a>: <code class="code">sig</code> <a href="UTF8.Buf.html">..</a> <code class="code">end</code></pre><div class="info"> Buffer module for UTF-8 strings </div> </body></html>
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