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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<title>UCommon: ucc::shell Class Reference</title>
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  <div class="navpath"><a class="el" href="a00214.html">ucc</a>::<a class="el" href="a00142.html">shell</a>
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<div class="contents">
<h1>ucc::shell Class Reference</h1><!-- doxytag: class="ucc::shell" --><!-- doxytag: inherits="ucc::mempager" -->
<p>A utility class for generic shell operations.  
<a href="#_details">More...</a></p>

<p><code>#include &lt;<a class="el" href="a00204_source.html">shell.h</a>&gt;</code></p>
<div class="dynheader">
Inheritance diagram for ucc::shell:</div>
<div class="dynsection">
<div class="center"><img src="a00533.png" border="0" usemap="#ucc_1_1shell_inherit__map" alt="Inheritance graph"/></div>
<map name="ucc_1_1shell_inherit__map" id="ucc_1_1shell_inherit__map">
<area shape="rect" id="node2" href="a00081.html" title="A managed private heap for small allocations." alt="" coords="5,83,128,112"/><area shape="rect" id="node4" href="a00080.html" title="An alternate memory pager private heap manager." alt="" coords="9,5,124,35"/></map>
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Collaboration diagram for ucc::shell:</div>
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<div class="center"><img src="a00534.png" border="0" usemap="#ucc_1_1shell_coll__map" alt="Collaboration graph"/></div>
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<area shape="rect" id="node2" href="a00081.html" title="A managed private heap for small allocations." alt="" coords="5,83,128,112"/><area shape="rect" id="node4" href="a00080.html" title="An alternate memory pager private heap manager." alt="" coords="9,5,124,35"/></map>
<center><span class="legend">[<a target="top" href="graph_legend.html">legend</a>]</span></center></div>
<table border="0" cellpadding="0" cellspacing="0">
<tr><td colspan="2"><h2>Data Structures</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">class &nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00143.html">charopt</a></td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Character option for shell parsing.  <a href="a00143.html#_details">More...</a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">class &nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00144.html">errormap</a></td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">A class to redefine error messages.  <a href="a00144.html#_details">More...</a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">class &nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00145.html">flagopt</a></td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Flag option for shell parsing.  <a href="a00145.html#_details">More...</a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">class &nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00146.html">iobuf</a></td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Process pipe with I/O buffering.  <a href="a00146.html#_details">More...</a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">class &nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00147.html">numericopt</a></td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Numeric option for shell parsing.  <a href="a00147.html#_details">More...</a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">class &nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00148.html">Option</a></td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">A base class used to create parsable shell options.  <a href="a00148.html#_details">More...</a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">class &nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00149.html">pipeio</a></td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">A class to control a process that is piped.  <a href="a00149.html#_details">More...</a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">class &nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00150.html">stringopt</a></td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Text option for shell parsing.  <a href="a00150.html#_details">More...</a><br/></td></tr>
<tr><td colspan="2"><h2>Public Types</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">enum &nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00142.html#a6f7ee70144bc45af94f00a08d815b7a3">errmsg_t</a> { <br/>
&nbsp;&nbsp;<b>NOARGS</b> =  0, 
<b>NOARGUMENT</b>, 
<b>INVARGUMENT</b>, 
<b>BADOPTION</b>, 
<br/>
&nbsp;&nbsp;<b>OPTION_USED</b>, 
<b>BAD_VALUE</b>
<br/>
 }</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight"><p>Error table index. </p>
<br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a8dc921cc22415fef18aa1f248a8ea5bd"></a><!-- doxytag: member="ucc::shell::io_t" ref="a8dc921cc22415fef18aa1f248a8ea5bd" args="" -->
typedef <a class="el" href="a00146.html">iobuf</a>&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00142.html#a8dc921cc22415fef18aa1f248a8ea5bd">io_t</a></td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Buffered i/o type for pipes and stdio. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a398f2242af2b40f5f95d2c3b7c46c631"></a><!-- doxytag: member="ucc::shell::pid_t" ref="a398f2242af2b40f5f95d2c3b7c46c631" args="" -->
typedef int&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00142.html#a398f2242af2b40f5f95d2c3b7c46c631">pid_t</a></td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Standard type of process id for shell class. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a76c5d4fe12e1b17d0709656d7ca3b66d"></a><!-- doxytag: member="ucc::shell::pipe_t" ref="a76c5d4fe12e1b17d0709656d7ca3b66d" args="" -->
typedef <a class="el" href="a00149.html">pipeio</a> *&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00142.html#a76c5d4fe12e1b17d0709656d7ca3b66d">pipe_t</a></td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Convenience low level pipe object type. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">enum &nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00142.html#af7525d05d6f9ea8f71492a42de9c528c">pmode_t</a> { <b>RD</b> =  IOBuffer::BUF_RD, 
<b>WR</b> =  IOBuffer::BUF_WR, 
<b>RDWR</b> =  IOBuffer::BUF_RDWR
 }</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight"><p>Pipe I/O mode. </p>
<br/></td></tr>
<tr><td colspan="2"><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">unsigned&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00142.html#a3fc5e8b1af9aa42e4837dc13d13f0d95">argc</a> (void) const </td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Get saved internal argc count for items.  <a href="#a3fc5e8b1af9aa42e4837dc13d13f0d95"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">char **&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00142.html#a9d2cb2cb34f0790f24c1de29f96de347">argv</a> (void) const </td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Get saved internal argv count for items in this shell object.  <a href="#a9d2cb2cb34f0790f24c1de29f96de347"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ae21aec71e94d5ca6d73ce6ab69121012"></a><!-- doxytag: member="ucc::shell::argv0" ref="ae21aec71e94d5ca6d73ce6ab69121012" args="() const " -->
const char *&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00142.html#ae21aec71e94d5ca6d73ce6ab69121012">argv0</a> () const </td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Get program name (argv0). <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00142.html#abcb2408ff705e20b96f03a49e6855a7f">detach</a> (const char *path, char **argv, char **env=NULL, fd_t *stdio=NULL)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Create a detached process.  <a href="#abcb2408ff705e20b96f03a49e6855a7f"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">unsigned&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00142.html#a7cac396b2da5b97fba8d41b3d127cade">operator()</a> (void)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Return argc count.  <a href="#a7cac396b2da5b97fba8d41b3d127cade"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const char *&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00142.html#a09c61f436014f8867fc1695094bffa56">operator[]</a> (unsigned offset)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Return parser argv element.  <a href="#a09c61f436014f8867fc1695094bffa56"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00142.html#a532cf9dc35fdb7384215ee38a877a66f">parse</a> (int argc, char **argv)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Parse the command line arguments using the option table.  <a href="#a532cf9dc35fdb7384215ee38a877a66f"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">char **&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00142.html#a95d58c5bed6422a6160ec8c613b5e40f">parse</a> (const char *<a class="el" href="a00157.html">string</a>)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Parse a string as a series of arguments for use in exec calls.  <a href="#a95d58c5bed6422a6160ec8c613b5e40f"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00142.html#a4f29282b21c9a25fef0e8d3b480b2cfa">shell</a> (size_t pagesize=0)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Construct an empty shell parser argument list.  <a href="#a4f29282b21c9a25fef0e8d3b480b2cfa"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00142.html#ad27f7d5c0e433fcd1acb5d725efe89bd">shell</a> (int argc, char **argv, size_t pagesize=0)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Construct a shell argument list from existing arguments.  <a href="#ad27f7d5c0e433fcd1acb5d725efe89bd"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00142.html#a3e70a2ea8af17c1afeb77fcc6d19005e">shell</a> (const char *<a class="el" href="a00157.html">string</a>, size_t pagesize=0)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Construct a shell argument list by parsing a simple command string.  <a href="#a3e70a2ea8af17c1afeb77fcc6d19005e"></a><br/></td></tr>
<tr><td colspan="2"><h2>Static Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static int&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00142.html#aeb8a093e7bc8c051e2eddbe08a5086b1">cancel</a> (<a class="el" href="a00149.html">shell::pipe_t</a> <a class="el" href="a00015.html">pointer</a>)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Cancel a child pipe.  <a href="#aeb8a093e7bc8c051e2eddbe08a5086b1"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static int&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00142.html#ad49336f428e17ee7b8853908b0f2a74d">cancel</a> (<a class="el" href="a00142.html#a398f2242af2b40f5f95d2c3b7c46c631">shell::pid_t</a> pid)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Cancel a child process.  <a href="#ad49336f428e17ee7b8853908b0f2a74d"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static unsigned&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00142.html#aed97198400c3c09d647c3d6d43c5d1fd">count</a> (char **argv)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Get argc count for an existing array.  <a href="#aed97198400c3c09d647c3d6d43c5d1fd"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00142.html#a919730cabf3f701a1e62f3e0cbf2cb81">errexit</a> (int exitcode, const char *format=NULL,...)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Print error message and exit.  <a href="#a919730cabf3f701a1e62f3e0cbf2cb81"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00142.html#a72d585982147fae7d431fb1b6397690f">errmsg</a> (<a class="el" href="a00142.html#a6f7ee70144bc45af94f00a08d815b7a3">errmsg_t</a> id, const char *text)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">This is used to set internationalized error messages for the shell parser.  <a href="#a72d585982147fae7d431fb1b6397690f"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static const char *&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00142.html#a2a9f42af136fe3bff7e008f2b9fe230b">errmsg</a> (<a class="el" href="a00142.html#a6f7ee70144bc45af94f00a08d815b7a3">errmsg_t</a> id)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">This can be used to get internationalized error messages.  <a href="#a2a9f42af136fe3bff7e008f2b9fe230b"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a626393469ba4236af7ef1d046a8069eb"></a><!-- doxytag: member="ucc::shell::error" ref="a626393469ba4236af7ef1d046a8069eb" args="(void)" -->
static fd_t&nbsp;</td><td class="memItemRight" valign="bottom"><b>error</b> (void)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ac0f1f89ae32736d2685f49067bb4c2d0"></a><!-- doxytag: member="ucc::shell::help" ref="ac0f1f89ae32736d2685f49067bb4c2d0" args="(void)" -->
static void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00142.html#ac0f1f89ae32736d2685f49067bb4c2d0">help</a> (void)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Display shell options. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a50b64e1773e95237031167674e3bf82f"></a><!-- doxytag: member="ucc::shell::input" ref="a50b64e1773e95237031167674e3bf82f" args="(void)" -->
static fd_t&nbsp;</td><td class="memItemRight" valign="bottom"><b>input</b> (void)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aebf370eb15a4b7b69ffaa9d5c98932f1"></a><!-- doxytag: member="ucc::shell::output" ref="aebf370eb15a4b7b69ffaa9d5c98932f1" args="(void)" -->
static fd_t&nbsp;</td><td class="memItemRight" valign="bottom"><b>output</b> (void)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static char **&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00142.html#aba697ad85eb581f917b4139b395c33bf">parse</a> (<a class="el" href="a00142.html">shell</a> &amp;args, const char *<a class="el" href="a00157.html">string</a>)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Parse shell arguments directly into a shell object.  <a href="#aba697ad85eb581f917b4139b395c33bf"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static size_t&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00142.html#a70ede3064d64f9f66e25c3538998bb31">printf</a> (<a class="el" href="a00149.html">pipe_t</a> pipe, const char *format,...)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Print to a pipe object.  <a href="#a70ede3064d64f9f66e25c3538998bb31"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static size_t&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00142.html#abcd397f645252399148b326e891deb0b">printf</a> (const char *format,...)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Print to standard output.  <a href="#abcd397f645252399148b326e891deb0b"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="af7bc6fba7f521c332632eb96c871c9df"></a><!-- doxytag: member="ucc::shell::read" ref="af7bc6fba7f521c332632eb96c871c9df" args="(pipe_t pipe, String &amp;string)" -->
static size_t&nbsp;</td><td class="memItemRight" valign="bottom"><b>read</b> (<a class="el" href="a00149.html">pipe_t</a> pipe, <a class="el" href="a00157.html">String</a> &amp;<a class="el" href="a00157.html">string</a>)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a7efbb8ac1d3e10806abfc6dc01aa2fa6"></a><!-- doxytag: member="ucc::shell::read" ref="a7efbb8ac1d3e10806abfc6dc01aa2fa6" args="(String &amp;string)" -->
static size_t&nbsp;</td><td class="memItemRight" valign="bottom"><b>read</b> (<a class="el" href="a00157.html">String</a> &amp;<a class="el" href="a00157.html">string</a>)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static size_t&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00142.html#a56dcaebc40a51ba89bdeba6aa3c05d7e">readln</a> (<a class="el" href="a00149.html">pipe_t</a> pipe, char *buffer, size_t size)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Read a line from a pipe object.  <a href="#a56dcaebc40a51ba89bdeba6aa3c05d7e"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ae0d8d4d1e496fe8d181d693a18caf519"></a><!-- doxytag: member="ucc::shell::readln" ref="ae0d8d4d1e496fe8d181d693a18caf519" args="(char *address, size_t size)" -->
static size_t&nbsp;</td><td class="memItemRight" valign="bottom"><b>readln</b> (char *address, size_t size)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static <a class="el" href="a00149.html">shell::pipe_t</a>&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00142.html#a5ba26f8c415afccc26fbcdefafd2d9d1">spawn</a> (const char *path, char **argv, <a class="el" href="a00142.html#af7525d05d6f9ea8f71492a42de9c528c">pmode_t</a> mode, size_t size=512, char **env=NULL)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Spawn a child pipe.  <a href="#a5ba26f8c415afccc26fbcdefafd2d9d1"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static <a class="el" href="a00142.html#a398f2242af2b40f5f95d2c3b7c46c631">shell::pid_t</a>&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00142.html#ab498bb8bb1cabf815bb44bf8a56b067a">spawn</a> (const char *path, char **argv, char **env=NULL, fd_t *stdio=NULL)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Spawn a child process.  <a href="#ab498bb8bb1cabf815bb44bf8a56b067a"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static int&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00142.html#a46eb43e8f4e3ea9cc026261e8d37fb05">system</a> (const char *command, const char **env=NULL)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">A shell system call.  <a href="#a46eb43e8f4e3ea9cc026261e8d37fb05"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static int&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00142.html#afbb7a9f622fcd7784d9dc8a71dc89d8e">systemf</a> (const char *format,...)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">A shell system call that can be issued using a formatted string.  <a href="#afbb7a9f622fcd7784d9dc8a71dc89d8e"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static int&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00142.html#a8fa2595ab873d353183f404e3013a603">wait</a> (<a class="el" href="a00149.html">shell::pipe_t</a> <a class="el" href="a00015.html">pointer</a>)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Wait for a child pipe to terminate.  <a href="#a8fa2595ab873d353183f404e3013a603"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static int&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="a00142.html#a9b2588c1b614e56429183a5b1a2ae79f">wait</a> (<a class="el" href="a00142.html#a398f2242af2b40f5f95d2c3b7c46c631">shell::pid_t</a> pid)</td></tr>
<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Wait for a child process to terminate.  <a href="#a9b2588c1b614e56429183a5b1a2ae79f"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a99057efc2e92e02caf81950c3aed092d"></a><!-- doxytag: member="ucc::shell::write" ref="a99057efc2e92e02caf81950c3aed092d" args="(pipe_t pipe, String &amp;string)" -->
static size_t&nbsp;</td><td class="memItemRight" valign="bottom"><b>write</b> (<a class="el" href="a00149.html">pipe_t</a> pipe, <a class="el" href="a00157.html">String</a> &amp;<a class="el" href="a00157.html">string</a>)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a74561b95fffc4ecfa489486fee1f4645"></a><!-- doxytag: member="ucc::shell::write" ref="a74561b95fffc4ecfa489486fee1f4645" args="(String &amp;string)" -->
static size_t&nbsp;</td><td class="memItemRight" valign="bottom"><b>write</b> (<a class="el" href="a00157.html">String</a> &amp;<a class="el" href="a00157.html">string</a>)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a3d7dfdd5bba91c9d8af6e1b081612f34"></a><!-- doxytag: member="ucc::shell::writes" ref="a3d7dfdd5bba91c9d8af6e1b081612f34" args="(pipe_t pipe, const char *string)" -->
static size_t&nbsp;</td><td class="memItemRight" valign="bottom"><b>writes</b> (<a class="el" href="a00149.html">pipe_t</a> pipe, const char *<a class="el" href="a00157.html">string</a>)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a04a25cf383d808ab9a660854eaed56ed"></a><!-- doxytag: member="ucc::shell::writes" ref="a04a25cf383d808ab9a660854eaed56ed" args="(const char *string)" -->
static size_t&nbsp;</td><td class="memItemRight" valign="bottom"><b>writes</b> (const char *<a class="el" href="a00157.html">string</a>)</td></tr>
</table>
<hr/><a name="_details"></a><h2>Detailed Description</h2>
<p>A utility class for generic shell operations. </p>
<p>This includes utilities to parse and expand arguments, and to call system shell services. This also includes a common shell class to parse and process command line arguments which are managed through a local heap. </p>
<dl class="author"><dt><b>Author:</b></dt><dd>David Sugar &lt;<a href="mailto:dyfet@gnutelephony.org">dyfet@gnutelephony.org</a>&gt; </dd></dl>

<p>Definition at line <a class="el" href="a00204_source.html#l00058">58</a> of file <a class="el" href="a00204_source.html">shell.h</a>.</p>
<hr/><h2>Constructor &amp; Destructor Documentation</h2>
<a class="anchor" id="a3e70a2ea8af17c1afeb77fcc6d19005e"></a><!-- doxytag: member="ucc::shell::shell" ref="a3e70a2ea8af17c1afeb77fcc6d19005e" args="(const char *string, size_t pagesize=0)" -->
<div class="memitem">
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      <table class="memname">
        <tr>
          <td class="memname">ucc::shell::shell </td>
          <td>(</td>
          <td class="paramtype">const char *&nbsp;</td>
          <td class="paramname"> <em>string</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">size_t&nbsp;</td>
          <td class="paramname"> <em>pagesize</em> = <code>0</code></td><td>&nbsp;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td><td></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>Construct a shell argument list by parsing a simple command string. </p>
<p>This seperates a string into a list of command line arguments which can be used with exec functions. </p>
<dl><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>string</em>&nbsp;</td><td>to parse. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>pagesize</em>&nbsp;</td><td>for local heap. </td></tr>
  </table>
  </dd>
</dl>

</div>
</div>
<a class="anchor" id="ad27f7d5c0e433fcd1acb5d725efe89bd"></a><!-- doxytag: member="ucc::shell::shell" ref="ad27f7d5c0e433fcd1acb5d725efe89bd" args="(int argc, char **argv, size_t pagesize=0)" -->
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          <td class="memname">ucc::shell::shell </td>
          <td>(</td>
          <td class="paramtype">int&nbsp;</td>
          <td class="paramname"> <em>argc</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">char **&nbsp;</td>
          <td class="paramname"> <em>argv</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">size_t&nbsp;</td>
          <td class="paramname"> <em>pagesize</em> = <code>0</code></td><td>&nbsp;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td><td></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>Construct a shell argument list from existing arguments. </p>
<p>This copies and on some platforms expands the argument list originally passed to main. </p>
<dl><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>argc</em>&nbsp;</td><td>from main. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>argv</em>&nbsp;</td><td>from main. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>pagesize</em>&nbsp;</td><td>for local heap. </td></tr>
  </table>
  </dd>
</dl>

</div>
</div>
<a class="anchor" id="a4f29282b21c9a25fef0e8d3b480b2cfa"></a><!-- doxytag: member="ucc::shell::shell" ref="a4f29282b21c9a25fef0e8d3b480b2cfa" args="(size_t pagesize=0)" -->
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          <td class="memname">ucc::shell::shell </td>
          <td>(</td>
          <td class="paramtype">size_t&nbsp;</td>
          <td class="paramname"> <em>pagesize</em> = <code>0</code></td>
          <td>&nbsp;)&nbsp;</td>
          <td></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>Construct an empty shell parser argument list. </p>
<dl><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>pagesize</em>&nbsp;</td><td>for local heap. </td></tr>
  </table>
  </dd>
</dl>

</div>
</div>
<hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="a3fc5e8b1af9aa42e4837dc13d13f0d95"></a><!-- doxytag: member="ucc::shell::argc" ref="a3fc5e8b1af9aa42e4837dc13d13f0d95" args="(void) const " -->
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          <td class="memname">unsigned ucc::shell::argc </td>
          <td>(</td>
          <td class="paramtype">void&nbsp;</td>
          <td class="paramname"></td>
          <td>&nbsp;)&nbsp;</td>
          <td> const<code> [inline]</code></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>Get saved internal argc count for items. </p>
<p>This may be items that remain after shell expansion and options have been parsed. </p>
<dl class="return"><dt><b>Returns:</b></dt><dd>count of remaining arguments. </dd></dl>

<p>Definition at line <a class="el" href="a00204_source.html#l00571">571</a> of file <a class="el" href="a00204_source.html">shell.h</a>.</p>

</div>
</div>
<a class="anchor" id="a9d2cb2cb34f0790f24c1de29f96de347"></a><!-- doxytag: member="ucc::shell::argv" ref="a9d2cb2cb34f0790f24c1de29f96de347" args="(void) const " -->
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          <td class="memname">char** ucc::shell::argv </td>
          <td>(</td>
          <td class="paramtype">void&nbsp;</td>
          <td class="paramname"></td>
          <td>&nbsp;)&nbsp;</td>
          <td> const<code> [inline]</code></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>Get saved internal argv count for items in this shell object. </p>
<p>This may be filename items only that remain after shell expansion and options that have been parsed. </p>
<dl class="return"><dt><b>Returns:</b></dt><dd>list of remaining arguments. </dd></dl>

<p>Definition at line <a class="el" href="a00204_source.html#l00580">580</a> of file <a class="el" href="a00204_source.html">shell.h</a>.</p>

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<a class="anchor" id="aeb8a093e7bc8c051e2eddbe08a5086b1"></a><!-- doxytag: member="ucc::shell::cancel" ref="aeb8a093e7bc8c051e2eddbe08a5086b1" args="(shell::pipe_t pointer)" -->
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          <td class="paramname"> <em>pointer</em></td>
          <td>&nbsp;)&nbsp;</td>
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<p>Cancel a child pipe. </p>
<p>If the pipe io handle is dynamic, it is deleted. </p>
<dl><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>pointer</em>&nbsp;</td><td>to pipe of child process to cancel. </td></tr>
  </table>
  </dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>exit code of process, -1 if fails or pid is invalid. </dd></dl>

</div>
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<a class="anchor" id="ad49336f428e17ee7b8853908b0f2a74d"></a><!-- doxytag: member="ucc::shell::cancel" ref="ad49336f428e17ee7b8853908b0f2a74d" args="(shell::pid_t pid)" -->
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          <td class="memname">static int ucc::shell::cancel </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="a00142.html#a398f2242af2b40f5f95d2c3b7c46c631">shell::pid_t</a>&nbsp;</td>
          <td class="paramname"> <em>pid</em></td>
          <td>&nbsp;)&nbsp;</td>
          <td><code> [static]</code></td>
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<p>Cancel a child process. </p>
<dl><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>pid</em>&nbsp;</td><td>of child process to cancel. </td></tr>
  </table>
  </dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>exit code of process, -1 if fails or pid is invalid. </dd></dl>

</div>
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<a class="anchor" id="aed97198400c3c09d647c3d6d43c5d1fd"></a><!-- doxytag: member="ucc::shell::count" ref="aed97198400c3c09d647c3d6d43c5d1fd" args="(char **argv)" -->
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          <td>(</td>
          <td class="paramtype">char **&nbsp;</td>
          <td class="paramname"> <em>argv</em></td>
          <td>&nbsp;)&nbsp;</td>
          <td><code> [static]</code></td>
        </tr>
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<p>Get argc count for an existing array. </p>
<dl><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>argv</em>&nbsp;</td><td>to count items in. </td></tr>
  </table>
  </dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>argc count of array. </dd></dl>

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<a class="anchor" id="abcb2408ff705e20b96f03a49e6855a7f"></a><!-- doxytag: member="ucc::shell::detach" ref="abcb2408ff705e20b96f03a49e6855a7f" args="(const char *path, char **argv, char **env=NULL, fd_t *stdio=NULL)" -->
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          <td>(</td>
          <td class="paramtype">const char *&nbsp;</td>
          <td class="paramname"> <em>path</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">char **&nbsp;</td>
          <td class="paramname"> <em>argv</em>, </td>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">char **&nbsp;</td>
          <td class="paramname"> <em>env</em> = <code>NULL</code>, </td>
        </tr>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">fd_t *&nbsp;</td>
          <td class="paramname"> <em>stdio</em> = <code>NULL</code></td><td>&nbsp;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td><td></td>
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<p>Create a detached process. </p>
<p>This creates a new child process that is completely detached from the current process. </p>
<dl><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>path</em>&nbsp;</td><td>to executable. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>argv</em>&nbsp;</td><td>list of command arguments for the child process. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>env</em>&nbsp;</td><td>of child process can be explicity set. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>stdio</em>&nbsp;</td><td>handles for stdin, stdout, and stderr. </td></tr>
  </table>
  </dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>0 if success, -1 on error. </dd></dl>

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<a class="anchor" id="a919730cabf3f701a1e62f3e0cbf2cb81"></a><!-- doxytag: member="ucc::shell::errexit" ref="a919730cabf3f701a1e62f3e0cbf2cb81" args="(int exitcode, const char *format=NULL,...)" -->
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        </tr>
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          <td></td><td></td><td><code> [static]</code></td>
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<p>Print error message and exit. </p>
<dl><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>exitcode</em>&nbsp;</td><td>to return to parent process. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>format</em>&nbsp;</td><td>string to use. </td></tr>
  </table>
  </dd>
</dl>

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<a class="anchor" id="a72d585982147fae7d431fb1b6397690f"></a><!-- doxytag: member="ucc::shell::errmsg" ref="a72d585982147fae7d431fb1b6397690f" args="(errmsg_t id, const char *text)" -->
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          <td class="paramname"> <em>id</em>, </td>
        </tr>
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          <td></td>
          <td class="paramtype">const char *&nbsp;</td>
          <td class="paramname"> <em>text</em></td><td>&nbsp;</td>
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          <td></td><td></td><td><code> [static]</code></td>
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<p>This is used to set internationalized error messages for the shell parser. </p>
<dl><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>id</em>&nbsp;</td><td>of message to set. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>text</em>&nbsp;</td><td>for error message. </td></tr>
  </table>
  </dd>
</dl>

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<a class="anchor" id="a2a9f42af136fe3bff7e008f2b9fe230b"></a><!-- doxytag: member="ucc::shell::errmsg" ref="a2a9f42af136fe3bff7e008f2b9fe230b" args="(errmsg_t id)" -->
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          <td>&nbsp;)&nbsp;</td>
          <td><code> [static]</code></td>
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<p>This can be used to get internationalized error messages. </p>
<p>The internal text for shell parser errors are passed through here. </p>
<dl><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>id</em>&nbsp;</td><td>of error message to use. </td></tr>
  </table>
  </dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>published text of error message. </dd></dl>

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<a class="anchor" id="a7cac396b2da5b97fba8d41b3d127cade"></a><!-- doxytag: member="ucc::shell::operator()" ref="a7cac396b2da5b97fba8d41b3d127cade" args="(void)" -->
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          <td>&nbsp;)&nbsp;</td>
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<p>Return argc count. </p>
<dl class="return"><dt><b>Returns:</b></dt><dd>argc count. </dd></dl>

<p>Definition at line <a class="el" href="a00204_source.html#l00661">661</a> of file <a class="el" href="a00204_source.html">shell.h</a>.</p>

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          <td class="paramname"> <em>offset</em></td>
          <td>&nbsp;)&nbsp;</td>
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<p>Return parser argv element. </p>
<dl><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>offset</em>&nbsp;</td><td>into array. </td></tr>
  </table>
  </dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>argument string. </dd></dl>

<p>Definition at line <a class="el" href="a00204_source.html#l00588">588</a> of file <a class="el" href="a00204_source.html">shell.h</a>.</p>

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<a class="anchor" id="aba697ad85eb581f917b4139b395c33bf"></a><!-- doxytag: member="ucc::shell::parse" ref="aba697ad85eb581f917b4139b395c33bf" args="(shell &amp;args, const char *string)" -->
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          <td class="paramname"> <em>args</em>, </td>
        </tr>
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          <td class="paramname"> <em>string</em></td><td>&nbsp;</td>
        </tr>
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          <td>)</td>
          <td></td><td></td><td><code> [inline, static]</code></td>
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<p>Parse shell arguments directly into a shell object. </p>
<dl><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>args</em>&nbsp;</td><td>table. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>string</em>&nbsp;</td><td>to parse. </td></tr>
  </table>
  </dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>argument array. </dd></dl>

<p>Definition at line <a class="el" href="a00204_source.html#l00511">511</a> of file <a class="el" href="a00204_source.html">shell.h</a>.</p>

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          <td class="paramname"> <em>argc</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
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<p>Parse the command line arguments using the option table. </p>
<p>File arguments will be expanded for wildcards on some platforms. The argv will be set to the first file argument after all options are parsed. </p>
<dl><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>argc</em>&nbsp;</td><td>from main. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>argv</em>&nbsp;</td><td>from main. </td></tr>
  </table>
  </dd>
</dl>

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<a class="anchor" id="a95d58c5bed6422a6160ec8c613b5e40f"></a><!-- doxytag: member="ucc::shell::parse" ref="a95d58c5bed6422a6160ec8c613b5e40f" args="(const char *string)" -->
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<p>Parse a string as a series of arguments for use in exec calls. </p>
<dl><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>string</em>&nbsp;</td><td>to parse. </td></tr>
  </table>
  </dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>argument array. </dd></dl>

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<a class="anchor" id="a70ede3064d64f9f66e25c3538998bb31"></a><!-- doxytag: member="ucc::shell::printf" ref="a70ede3064d64f9f66e25c3538998bb31" args="(pipe_t pipe, const char *format,...)" -->
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          <td class="paramname"> <em>pipe</em>, </td>
        </tr>
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          <td></td>
          <td class="paramtype">const char *&nbsp;</td>
          <td class="paramname"> <em>format</em>, </td>
        </tr>
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          <td class="paramtype">&nbsp;</td>
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          <td></td><td></td><td><code> [static]</code></td>
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<p>Print to a pipe object. </p>
<dl><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>pipe</em>&nbsp;</td><td>to write to. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>format</em>&nbsp;</td><td>string to use. </td></tr>
  </table>
  </dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>number of bytes written. </dd></dl>

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<a class="anchor" id="abcd397f645252399148b326e891deb0b"></a><!-- doxytag: member="ucc::shell::printf" ref="abcd397f645252399148b326e891deb0b" args="(const char *format,...)" -->
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          <td class="paramname"> <em>format</em>, </td>
        </tr>
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<p>Print to standard output. </p>
<dl><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>format</em>&nbsp;</td><td>string to use. </td></tr>
  </table>
  </dd>
</dl>

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<a class="anchor" id="a56dcaebc40a51ba89bdeba6aa3c05d7e"></a><!-- doxytag: member="ucc::shell::readln" ref="a56dcaebc40a51ba89bdeba6aa3c05d7e" args="(pipe_t pipe, char *buffer, size_t size)" -->
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          <td class="paramname"> <em>pipe</em>, </td>
        </tr>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">char *&nbsp;</td>
          <td class="paramname"> <em>buffer</em>, </td>
        </tr>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">size_t&nbsp;</td>
          <td class="paramname"> <em>size</em></td><td>&nbsp;</td>
        </tr>
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          <td></td>
          <td>)</td>
          <td></td><td></td><td><code> [static]</code></td>
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<p>Read a line from a pipe object. </p>
<dl><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>pipe</em>&nbsp;</td><td>to read from. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>buffer</em>&nbsp;</td><td>to save into. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>size</em>&nbsp;</td><td>of buffer. </td></tr>
  </table>
  </dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>number of bytes read. </dd></dl>

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<a class="anchor" id="a5ba26f8c415afccc26fbcdefafd2d9d1"></a><!-- doxytag: member="ucc::shell::spawn" ref="a5ba26f8c415afccc26fbcdefafd2d9d1" args="(const char *path, char **argv, pmode_t mode, size_t size=512, char **env=NULL)" -->
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          <td class="paramname"> <em>path</em>, </td>
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          <td></td>
          <td class="paramtype"><a class="el" href="a00142.html#af7525d05d6f9ea8f71492a42de9c528c">pmode_t</a>&nbsp;</td>
          <td class="paramname"> <em>mode</em>, </td>
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          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">size_t&nbsp;</td>
          <td class="paramname"> <em>size</em> = <code>512</code>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">char **&nbsp;</td>
          <td class="paramname"> <em>env</em> = <code>NULL</code></td><td>&nbsp;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td><td><code> [static]</code></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>Spawn a child pipe. </p>
<p>If the executable path is a pure filename, then the $PATH will be used to find it. The argv array may be created from a string with the shell string parser. </p>
<dl><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>path</em>&nbsp;</td><td>to executable. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>argv</em>&nbsp;</td><td>list of command arguments for the child process. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>mode</em>&nbsp;</td><td>of pipe, rd only, wr only, or rdwr. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>size</em>&nbsp;</td><td>of pipe buffer. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>env</em>&nbsp;</td><td>of child process can be explicitly set. </td></tr>
  </table>
  </dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>pipe object or NULL on failure. </dd></dl>

</div>
</div>
<a class="anchor" id="ab498bb8bb1cabf815bb44bf8a56b067a"></a><!-- doxytag: member="ucc::shell::spawn" ref="ab498bb8bb1cabf815bb44bf8a56b067a" args="(const char *path, char **argv, char **env=NULL, fd_t *stdio=NULL)" -->
<div class="memitem">
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        <tr>
          <td class="memname">static <a class="el" href="a00142.html#a398f2242af2b40f5f95d2c3b7c46c631">shell::pid_t</a> ucc::shell::spawn </td>
          <td>(</td>
          <td class="paramtype">const char *&nbsp;</td>
          <td class="paramname"> <em>path</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">char **&nbsp;</td>
          <td class="paramname"> <em>argv</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">char **&nbsp;</td>
          <td class="paramname"> <em>env</em> = <code>NULL</code>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">fd_t *&nbsp;</td>
          <td class="paramname"> <em>stdio</em> = <code>NULL</code></td><td>&nbsp;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td><td><code> [static]</code></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>Spawn a child process. </p>
<p>This creates a new child process. If the executable path is a pure filename, then the $PATH will be used to find it. The argv array may be created from a string with the shell string parser. </p>
<dl><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>path</em>&nbsp;</td><td>to executable. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>argv</em>&nbsp;</td><td>list of command arguments for the child process. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>env</em>&nbsp;</td><td>of child process can be explicitly set. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>stdio</em>&nbsp;</td><td>handles for stdin, stdout, and stderr. </td></tr>
  </table>
  </dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>process id of child or INVALID_PID_VALUE if fails. </dd></dl>

</div>
</div>
<a class="anchor" id="a46eb43e8f4e3ea9cc026261e8d37fb05"></a><!-- doxytag: member="ucc::shell::system" ref="a46eb43e8f4e3ea9cc026261e8d37fb05" args="(const char *command, const char **env=NULL)" -->
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          <td class="memname">static int ucc::shell::system </td>
          <td>(</td>
          <td class="paramtype">const char *&nbsp;</td>
          <td class="paramname"> <em>command</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">const char **&nbsp;</td>
          <td class="paramname"> <em>env</em> = <code>NULL</code></td><td>&nbsp;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td><td><code> [static]</code></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>A shell system call. </p>
<p>This uses the native system shell to invoke the command. </p>
<dl><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>command</em>&nbsp;</td><td>string.. </td></tr>
    <tr><td valign="top"></td><td valign="top"><em>env</em>&nbsp;</td><td>array to optionally use. </td></tr>
  </table>
  </dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>error code of child process. </dd></dl>

</div>
</div>
<a class="anchor" id="afbb7a9f622fcd7784d9dc8a71dc89d8e"></a><!-- doxytag: member="ucc::shell::systemf" ref="afbb7a9f622fcd7784d9dc8a71dc89d8e" args="(const char *format,...)" -->
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      <table class="memname">
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          <td class="memname">static int ucc::shell::systemf </td>
          <td>(</td>
          <td class="paramtype">const char *&nbsp;</td>
          <td class="paramname"> <em>format</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">&nbsp;</td>
          <td class="paramname"> <em>...</em></td><td>&nbsp;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td><td><code> [static]</code></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>A shell system call that can be issued using a formatted string. </p>
<p>This uses the native system shell to invoke the command. </p>
<dl><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>format</em>&nbsp;</td><td>of/command string. </td></tr>
  </table>
  </dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>error code of child process. </dd></dl>

</div>
</div>
<a class="anchor" id="a8fa2595ab873d353183f404e3013a603"></a><!-- doxytag: member="ucc::shell::wait" ref="a8fa2595ab873d353183f404e3013a603" args="(shell::pipe_t pointer)" -->
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          <td class="memname">static int ucc::shell::wait </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="a00149.html">shell::pipe_t</a>&nbsp;</td>
          <td class="paramname"> <em>pointer</em></td>
          <td>&nbsp;)&nbsp;</td>
          <td><code> [static]</code></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>Wait for a child pipe to terminate. </p>
<p>This operation blocks. If the pipe io handle is dynamic, it is deleted. </p>
<dl><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>pointer</em>&nbsp;</td><td>to pipe of child process to wait for. </td></tr>
  </table>
  </dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>exit code of process, -1 if fails or pid is invalid. </dd></dl>

</div>
</div>
<a class="anchor" id="a9b2588c1b614e56429183a5b1a2ae79f"></a><!-- doxytag: member="ucc::shell::wait" ref="a9b2588c1b614e56429183a5b1a2ae79f" args="(shell::pid_t pid)" -->
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">static int ucc::shell::wait </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="a00142.html#a398f2242af2b40f5f95d2c3b7c46c631">shell::pid_t</a>&nbsp;</td>
          <td class="paramname"> <em>pid</em></td>
          <td>&nbsp;)&nbsp;</td>
          <td><code> [static]</code></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>Wait for a child process to terminate. </p>
<p>This operation blocks. </p>
<dl><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>pid</em>&nbsp;</td><td>of process to wait for. </td></tr>
  </table>
  </dd>
</dl>
<dl class="return"><dt><b>Returns:</b></dt><dd>exit code of process, -1 if fails or pid is invalid. </dd></dl>

</div>
</div>
<hr/>The documentation for this class was generated from the following file:<ul>
<li>ucommon/<a class="el" href="a00204_source.html">shell.h</a></li>
</ul>
</div>
<hr class="footer"/><address style="text-align: right;"><small>Generated on Tue Jul 6 08:22:46 2010 for UCommon by&nbsp;
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<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.6.3 </small></address>
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