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<h1>shell.cpp</h1> </div>
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<p>Example of shell parsing.</p>
<div class="fragment"><pre class="fragment"><span class="comment">// Copyright (C) 2009-2010 David Sugar, Tycho Softworks.</span>
<span class="comment">//</span>
<span class="comment">// This file is part of GNU uCommon C++.</span>
<span class="comment">//</span>
<span class="comment">// GNU uCommon C++ is free software: you can redistribute it and/or modify</span>
<span class="comment">// it under the terms of the GNU Lesser General Public License as published</span>
<span class="comment">// by the Free Software Foundation, either version 3 of the License, or</span>
<span class="comment">// (at your option) any later version.</span>
<span class="comment">//</span>
<span class="comment">// GNU uCommon C++ is distributed in the hope that it will be useful,</span>
<span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
<span class="comment">// GNU Lesser General Public License for more details.</span>
<span class="comment">//</span>
<span class="comment">// You should have received a copy of the GNU Lesser General Public License</span>
<span class="comment">// along with GNU uCommon C++. If not, see <http://www.gnu.org/licenses/>.</span>
<span class="preprocessor">#ifndef DEBUG</span>
<span class="preprocessor"></span><span class="preprocessor">#define DEBUG</span>
<span class="preprocessor"></span><span class="preprocessor">#endif</span>
<span class="preprocessor"></span>
<span class="preprocessor">#include <<a class="code" href="a00202.html" title="Top level include file for the GNU uCommon C++ core library.">ucommon/ucommon.h</a>></span>
<span class="preprocessor">#include <stdio.h></span>
<span class="keyword">using namespace </span>UCOMMON_NAMESPACE;
<span class="keyword">extern</span> <span class="stringliteral">"C"</span> <span class="keywordtype">int</span> main()
{
<span class="keywordtype">int</span> test_argc;
<span class="keywordtype">char</span> *test_argv[6];
<a name="a0"></a><a class="code" href="a00130.html#a98a08e2f7c3869a437d4a5d79ff7820d" title="Bind application to text domain for internationalization.">shell::bind</a>(<span class="stringliteral">"test"</span>);
test_argc = 5;
test_argv[0] = (<span class="keywordtype">char</span> *)<span class="stringliteral">"test"</span>;
test_argv[1] = (<span class="keywordtype">char</span> *)<span class="stringliteral">"--lines=5"</span>;
test_argv[2] = (<span class="keywordtype">char</span> *)<span class="stringliteral">"-r"</span>;
test_argv[3] = (<span class="keywordtype">char</span> *)<span class="stringliteral">"a"</span>;
test_argv[4] = (<span class="keywordtype">char</span> *)<span class="stringliteral">"b"</span>;
test_argv[5] = NULL;
<a name="_a1"></a><a class="code" href="a00134.html" title="Flag option for shell parsing.">shell::flagopt</a> rflag(<span class="charliteral">'r'</span>, <span class="stringliteral">"--reverse"</span>, <span class="stringliteral">"reverse order of arguments"</span>);
<a class="code" href="a00134.html" title="Flag option for shell parsing.">shell::flagopt</a> tflag(<span class="charliteral">'t'</span>, <span class="stringliteral">"--testing"</span>, <span class="stringliteral">"never hit this flag"</span>);
<a name="_a2"></a><a class="code" href="a00137.html" title="Numeric option for shell parsing.">shell::numericopt</a> lines(<span class="charliteral">'l'</span>, <span class="stringliteral">"--lines"</span>, <span class="stringliteral">"number of lines in output"</span>);
<a name="_a3"></a><a class="code" href="a00130.html" title="A utility class for generic shell operations.">shell</a> args(test_argc, test_argv);
assert(!tflag);
assert(<a name="a4"></a><a class="code" href="a00185.html#a8e91e3bc27122a2ea5315c17a40dc374" title="Convenience function to validate object assuming it is castable to bool.">is</a>(rflag));
assert(*lines == 5);
assert(args() == 2); <span class="comment">// two file arguments left</span>
assert(<a name="a5"></a><a class="code" href="a00197.html#a980d221b0273a9bf5d14a0f403495b40" title="Compare two socket addresses to see if equal.">eq</a>(args[0], <span class="stringliteral">"a"</span>)); <span class="comment">// first file argument is "a"</span>
<a name="_a6"></a><a class="code" href="a00150.html" title="A copy-on-write string class that operates by reference count.">string_t</a> prefix, subdir, basedir;
prefix = <a name="a7"></a><a class="code" href="a00130.html#a8700714dd59769acda4d74ba689567b2" title="Get a system path.">shell::path</a>(shell::SYSTEM_PREFIX);
subdir = <a class="code" href="a00130.html#a8700714dd59769acda4d74ba689567b2" title="Get a system path.">shell::path</a>(shell::SYSTEM_PREFIX, <span class="stringliteral">"test"</span>);
basedir = <a class="code" href="a00130.html#a8700714dd59769acda4d74ba689567b2" title="Get a system path.">shell::path</a>(shell::SYSTEM_PREFIX, <span class="stringliteral">"/test"</span>);
prefix = prefix + <span class="stringliteral">"/test"</span>;
assert(<a class="code" href="a00197.html#a980d221b0273a9bf5d14a0f403495b40" title="Compare two socket addresses to see if equal.">eq</a>(basedir, <span class="stringliteral">"/test"</span>));
assert(<a class="code" href="a00197.html#a980d221b0273a9bf5d14a0f403495b40" title="Compare two socket addresses to see if equal.">eq</a>(subdir, prefix));
}
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