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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/1999/REC-html401-19991224/loose.dtd">
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<title>Castle Game Engine: CastleClassUtils: Class TTextReader</title>
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<h2>Castle Game Engine</h2><p><a href="introduction.html" class="navigation">Introduction</a></p><p><a href="AllUnits.html" class="navigation">Units</a></p><p><a href="ClassHierarchy.html" class="navigation">Class Hierarchy</a></p><p><a href="AllClasses.html" class="navigation">Classes, Interfaces, Objects and Records</a></p><p><a href="AllTypes.html" class="navigation">Types</a></p><p><a href="AllVariables.html" class="navigation">Variables</a></p><p><a href="AllConstants.html" class="navigation">Constants</a></p><p><a href="AllFunctions.html" class="navigation">Functions and Procedures</a></p><p><a href="AllIdentifiers.html" class="navigation">Identifiers</a></p></td><td class="content">
<a name="TTextReader"></a><h1 class="cio">Class TTextReader</h1>
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<td><a class="section" href="#PasDoc-Description">Description</a></td><td><a class="section" href="#PasDoc-Hierarchy">Hierarchy</a></td><td>Fields</td><td><a class="section" href="#PasDoc-Methods">Methods</a></td><td>Properties</td></tr></table>
<a name="PasDoc-Description"></a><h2 class="unit">Unit</h2>
<p class="unitlink">
<a href="CastleClassUtils.html">CastleClassUtils</a></p>
<h2 class="declaration">Declaration</h2>
<p class="declaration">
<code>type TTextReader = class(<a class="normal" href="CastleClassUtils.TTextReaderWriter.html">TTextReaderWriter</a>)</code></p>
<h2 class="description">Description</h2>
<p>
Read any TStream like a text file. Includes comfortable <a class="normal" href="CastleClassUtils.TTextReader.html#Readln">Readln</a> routine to read line by line (lines may be terminated in any OS convention). Includes comfortable <a class="normal" href="CastleClassUtils.TTextReader.html#Read">Read</a> to read next non-whitespace characters, <a class="normal" href="CastleClassUtils.TTextReader.html#ReadInteger">ReadInteger</a> to read next integer and such.
<p>Do not use the underlying stream once you started reading it with this class. We will move the position within this stream ourselves.</p>
<a name="PasDoc-Hierarchy"></a><h2 class="hierarchy">Hierarchy</h2>
<ul class="hierarchy"><li class="ancestor">TObject</li>
<li class="ancestor"><a class="normal" href="CastleClassUtils.TTextReaderWriter.html">TTextReaderWriter</a></li>
<li class="thisitem">TTextReader</li></ul><h2 class="overview">Overview</h2>
<a name="PasDoc-Methods"></a><h3 class="summary">Methods</h3>
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<td class="itemcode"><code>constructor <b><a href="CastleClassUtils.TTextReader.html#Create">Create</a></b>(const URL: string); overload;</code></td>
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<td class="itemcode"><code>function <b><a href="CastleClassUtils.TTextReader.html#Readln">Readln</a></b>: string;</code></td>
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<td class="itemcode"><code>function <b><a href="CastleClassUtils.TTextReader.html#Read">Read</a></b>: string;</code></td>
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<td class="itemcode"><code>function <b><a href="CastleClassUtils.TTextReader.html#ReadInteger">ReadInteger</a></b>: Integer;</code></td>
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<td class="itemcode"><code>function <b><a href="CastleClassUtils.TTextReader.html#ReadSingle">ReadSingle</a></b>: Single;</code></td>
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<td class="itemcode"><code>function <b><a href="CastleClassUtils.TTextReader.html#ReadVector3Single">ReadVector3Single</a></b>: <a href="CastleVectors.html#TVector3Single">TVector3Single</a>;</code></td>
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<td class="itemcode"><code>function <b><a href="CastleClassUtils.TTextReader.html#Eof">Eof</a></b>: boolean;</code></td>
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<h2 class="description">Description</h2>
<h3 class="detail">Methods</h3>
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<td class="itemcode"><a name="Create"></a><code>constructor <b>Create</b>(const URL: string); overload;</code></td>
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<p>
Download and open a file.</p>
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<td class="itemcode"><a name="Readln"></a><code>function <b>Readln</b>: string;</code></td>
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<p>
Read next line from Stream. Returned string does not contain any end-of-line characters.</p>
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<td class="itemcode"><a name="Read"></a><code>function <b>Read</b>: string;</code></td>
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<p>
Read the next string of non-whitespace characters. This skips any whitespace (including newlines) we currently see, then reads all non-whitespace characters as far as it can. It does not consume any whitespace characters after the string.
<p>Returns empty string if and only if the stream ended. Otherwise, returns the read non-whitespace characters.</p>
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<td class="itemcode"><a name="ReadInteger"></a><code>function <b>ReadInteger</b>: Integer;</code></td>
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<p>
Read the next Integer from stream. Reads next string of non-whitespace characters, like <a class="normal" href="CastleClassUtils.TTextReader.html#Read">Read</a>, and then converts it to Integer.
<p></p>
<h6 class="description_section">Exceptions raised</h6>
<dl class="exceptions_raised">
<dt><code>EConvertError</code></dt>
<dd>If the next non-whitespace string cannot be converted to Integer. This includes situations when stream ended (<a class="normal" href="CastleClassUtils.TTextReader.html#Read">Read</a> would return empty string in this case).</dd>
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<td class="itemcode"><a name="ReadSingle"></a><code>function <b>ReadSingle</b>: Single;</code></td>
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<p>
Read the next Single value from stream. Reads next string of non-whitespace characters, like <a class="normal" href="CastleClassUtils.TTextReader.html#Read">Read</a>, and then converts it to Single.
<p></p>
<h6 class="description_section">Exceptions raised</h6>
<dl class="exceptions_raised">
<dt><code>EConvertError</code></dt>
<dd>If the next non-whitespace string cannot be converted to Single. This includes situations when stream ended (<a class="normal" href="CastleClassUtils.TTextReader.html#Read">Read</a> would return empty string in this case).</dd>
</dl>
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<td class="itemcode"><a name="ReadVector3Single"></a><code>function <b>ReadVector3Single</b>: <a href="CastleVectors.html#TVector3Single">TVector3Single</a>;</code></td>
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<p>
Read the next vector from a stream, simply reading 3 Single values in sequence.
<p></p>
<h6 class="description_section">Exceptions raised</h6>
<dl class="exceptions_raised">
<dt><code>EConvertError</code></dt>
<dd>If one of the components cannot be converted to Single, or when stream ended prematurely.</dd>
</dl>
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<td class="itemcode"><a name="Eof"></a><code>function <b>Eof</b>: boolean;</code></td>
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