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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<h1>atom.c</h1><a href="atom_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment">00001 <span class="comment">/*</span>
00002 <span class="comment"> * Copyright (c) 2005, 2006 by KoanLogic s.r.l. &lt;http://www.koanlogic.com&gt;</span>
00003 <span class="comment"> * All rights reserved.</span>
00004 <span class="comment"> *</span>
00005 <span class="comment"> * This file is part of KLone, and as such it is subject to the license stated</span>
00006 <span class="comment"> * in the LICENSE file which you have received as part of this distribution.</span>
00007 <span class="comment"> *</span>
00008 <span class="comment"> * $Id: atom.c,v 1.12 2006/01/09 12:38:38 tat Exp $</span>
00009 <span class="comment"> */</span>
00010 
00011 <span class="preprocessor">#include "klone_conf.h"</span>
00012 <span class="preprocessor">#include &lt;u/libu.h&gt;</span>
00013 <span class="preprocessor">#include &lt;<a class="code" href="utils_8h.html">klone/utils.h</a>&gt;</span>
00014 <span class="preprocessor">#include &lt;<a class="code" href="atom_8h.html">klone/atom.h</a>&gt;</span>
00015 
<a name="l00016"></a><a class="code" href="atom_8h.html#a4">00016</a> <span class="keywordtype">int</span> <a class="code" href="atom_8h.html#a4">atom_create</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *<span class="keywordtype">id</span>, <span class="keyword">const</span> <span class="keywordtype">char</span> *data, size_t size, <span class="keywordtype">void</span> *arg, 
00017     <a class="code" href="structatom__s.html">atom_t</a> **patom)
00018 {
00019     <a class="code" href="structatom__s.html">atom_t</a> *atom = NULL;
00020 
00021     dbg_err_if (<span class="keywordtype">id</span> == NULL);
00022     dbg_err_if (data == NULL);
00023     dbg_err_if (patom == NULL);
00024 
00025     atom = u_zalloc(<span class="keyword">sizeof</span>(<a class="code" href="structatom__s.html">atom_t</a>));
00026     dbg_err_if(atom == NULL);
00027 
00028     atom-&gt;<a class="code" href="structatom__s.html#o0">id</a> = u_strdup(<span class="keywordtype">id</span>);
00029     dbg_err_if(atom-&gt;<a class="code" href="structatom__s.html#o0">id</a> == NULL);
00030 
00031     atom-&gt;<a class="code" href="structatom__s.html#o1">data</a> = u_memdup(data, size);
00032     dbg_err_if(atom-&gt;<a class="code" href="structatom__s.html#o1">data</a> == NULL);
00033 
00034     atom-&gt;<a class="code" href="structatom__s.html#o2">size</a> = size;
00035     atom-&gt;<a class="code" href="structatom__s.html#o3">arg</a> = arg;
00036 
00037     *patom = atom;
00038 
00039     <span class="keywordflow">return</span> 0;
00040 err:
00041     <span class="keywordflow">if</span>(atom)
00042         <a class="code" href="atom_8h.html#a5">atom_free</a>(atom);
00043     <span class="keywordflow">return</span> ~0;
00044 }
00045 
<a name="l00046"></a><a class="code" href="atom_8h.html#a5">00046</a> <span class="keywordtype">int</span> <a class="code" href="atom_8h.html#a5">atom_free</a>(<a class="code" href="structatom__s.html">atom_t</a> *atom)
00047 {
00048     <span class="keywordflow">if</span> (atom)
00049     {
00050         U_FREE(atom-&gt;<a class="code" href="structatom__s.html#o0">id</a>);
00051         U_FREE(atom-&gt;<a class="code" href="structatom__s.html#o1">data</a>);
00052         U_FREE(atom);
00053     }
00054 
00055     <span class="keywordflow">return</span> 0;
00056 }
00057 
00058 <span class="comment">/* sum of atoms size field */</span>
<a name="l00059"></a><a class="code" href="atom_8h.html#a8">00059</a> size_t <a class="code" href="atom_8h.html#a8">atoms_size</a>(<a class="code" href="structatoms__s.html">atoms_t</a> *as)
00060 {
00061     dbg_err_if (as == NULL);
00062 
00063     <span class="keywordflow">return</span> as-&gt;<a class="code" href="structatoms__s.html#o1">size</a>;
00064 err:
00065     <span class="keywordflow">return</span> -1;
00066 }
00067 
00068 <span class="comment">/* # of atoms */</span>
<a name="l00069"></a><a class="code" href="atom_8h.html#a9">00069</a> size_t <a class="code" href="atom_8h.html#a9">atoms_count</a>(<a class="code" href="structatoms__s.html">atoms_t</a> *as)
00070 {
00071     dbg_err_if (as == NULL);
00072 
00073     <span class="keywordflow">return</span> as-&gt;<a class="code" href="structatoms__s.html#o2">count</a>;
00074 err:
00075     <span class="keywordflow">return</span> -1;
00076 }
00077 
00078 <span class="comment">/* return the n-th atom */</span>
<a name="l00079"></a><a class="code" href="atom_8h.html#a10">00079</a> <span class="keywordtype">int</span> <a class="code" href="atom_8h.html#a10">atoms_getn</a>(<a class="code" href="structatoms__s.html">atoms_t</a> *as, size_t n, <a class="code" href="structatom__s.html">atom_t</a> **patom)
00080 {
00081     <a class="code" href="structatom__s.html">atom_t</a> *atom;
00082     size_t i = 0;
00083 
00084     dbg_err_if (as == NULL);
00085     dbg_err_if (n &gt;= as-&gt;<a class="code" href="structatoms__s.html#o2">count</a>);
00086     dbg_err_if (patom == NULL);
00087 
00088     LIST_FOREACH(atom, &amp;as-&gt;<a class="code" href="structatoms__s.html#o0">list</a>, np)
00089     {
00090         <span class="keywordflow">if</span>(i++ == n)
00091         {
00092             *patom = atom;
00093             <span class="keywordflow">return</span> 0;
00094         }
00095     }
00096 
00097 err:
00098     <span class="keywordflow">return</span> ~0; <span class="comment">/* out of bounds */</span>
00099 }
00100 
00101 <span class="comment">/* return the atom whose ID is id */</span>
<a name="l00102"></a><a class="code" href="atom_8h.html#a11">00102</a> <span class="keywordtype">int</span> <a class="code" href="atom_8h.html#a11">atoms_get</a>(<a class="code" href="structatoms__s.html">atoms_t</a> *as, <span class="keyword">const</span> <span class="keywordtype">char</span> *<span class="keywordtype">id</span>, <a class="code" href="structatom__s.html">atom_t</a> **patom)
00103 {
00104     <a class="code" href="structatom__s.html">atom_t</a> *atom;
00105 
00106     dbg_err_if (as == NULL);
00107     dbg_err_if (<span class="keywordtype">id</span> == NULL);
00108     dbg_err_if (patom == NULL);
00109 
00110     LIST_FOREACH(atom, &amp;as-&gt;<a class="code" href="structatoms__s.html#o0">list</a>, np)
00111     {
00112         <span class="keywordflow">if</span>(strcmp(<span class="keywordtype">id</span>, atom-&gt;<a class="code" href="structatom__s.html#o0">id</a>) == 0)
00113         {
00114             *patom = atom;
00115             <span class="keywordflow">return</span> 0;
00116         }
00117     }
00118 
00119 err:
00120     <span class="keywordflow">return</span> ~0; <span class="comment">/* not found */</span>
00121 }
00122 
00123 <span class="comment">/* add an atom to the list */</span>
<a name="l00124"></a><a class="code" href="atom_8h.html#a12">00124</a> <span class="keywordtype">int</span> <a class="code" href="atom_8h.html#a12">atoms_add</a>(<a class="code" href="structatoms__s.html">atoms_t</a> *as, <a class="code" href="structatom__s.html">atom_t</a> *atom)
00125 {
00126     dbg_err_if (as == NULL);
00127     dbg_err_if (atom == NULL);
00128 
00129     LIST_INSERT_HEAD(&amp;as-&gt;<a class="code" href="structatoms__s.html#o0">list</a>, atom, np);
00130 
00131     as-&gt;<a class="code" href="structatoms__s.html#o2">count</a>++;
00132     as-&gt;<a class="code" href="structatoms__s.html#o1">size</a> += atom-&gt;<a class="code" href="structatom__s.html#o2">size</a>;
00133 
00134     <span class="keywordflow">return</span> 0;
00135 err:
00136     <span class="keywordflow">return</span> ~0;
00137 }
00138 
00139 <span class="comment">/* add an atom to the list */</span>
<a name="l00140"></a><a class="code" href="atom_8h.html#a13">00140</a> <span class="keywordtype">int</span> <a class="code" href="atom_8h.html#a13">atoms_remove</a>(<a class="code" href="structatoms__s.html">atoms_t</a> *as, <a class="code" href="structatom__s.html">atom_t</a> *atom)
00141 {
00142     dbg_err_if (as == NULL);
00143     dbg_err_if (atom == NULL);
00144 
00145     LIST_REMOVE(atom, np);
00146 
00147     as-&gt;<a class="code" href="structatoms__s.html#o2">count</a>--;
00148     as-&gt;<a class="code" href="structatoms__s.html#o1">size</a> -= atom-&gt;<a class="code" href="structatom__s.html#o2">size</a>;
00149 
00150     <span class="keywordflow">return</span> 0;
00151 err:
00152     <span class="keywordflow">return</span> ~0;
00153 
00154 }
00155 
00156 <span class="comment">/* create an atom list */</span>
<a name="l00157"></a><a class="code" href="atom_8h.html#a6">00157</a> <span class="keywordtype">int</span> <a class="code" href="atom_8h.html#a6">atoms_create</a>(<a class="code" href="structatoms__s.html">atoms_t</a> **pas)
00158 {
00159     <a class="code" href="structatoms__s.html">atoms_t</a> *as = NULL;
00160 
00161     dbg_err_if (pas == NULL);
00162 
00163     as = u_zalloc(<span class="keyword">sizeof</span>(<a class="code" href="structatoms__s.html">atoms_t</a>));
00164     dbg_err_if(as == NULL);
00165 
00166     LIST_INIT(&amp;as-&gt;<a class="code" href="structatoms__s.html#o0">list</a>);
00167 
00168     *pas = as;
00169 
00170     <span class="keywordflow">return</span> 0;
00171 err:
00172     U_FREE(as);
00173     <span class="keywordflow">return</span> ~0;
00174 }
00175 
00176 <span class="comment">/* free an atom list */</span>
<a name="l00177"></a><a class="code" href="atom_8h.html#a7">00177</a> <span class="keywordtype">int</span> <a class="code" href="atom_8h.html#a7">atoms_free</a>(<a class="code" href="structatoms__s.html">atoms_t</a> *as)
00178 {
00179     <a class="code" href="structatom__s.html">atom_t</a> *atom;
00180 
00181     <span class="keywordflow">if</span> (as)
00182     {
00183         <span class="keywordflow">while</span>(<a class="code" href="atom_8h.html#a9">atoms_count</a>(as))
00184         {
00185             dbg_err_if(<a class="code" href="atom_8h.html#a10">atoms_getn</a>(as, 0, &amp;atom));
00186             dbg_err_if(<a class="code" href="atom_8h.html#a13">atoms_remove</a>(as, atom));
00187         }
00188 
00189         U_FREE(as);
00190     }
00191 
00192     <span class="keywordflow">return</span> 0;
00193 err:
00194     <span class="keywordflow">return</span> ~0;
00195 }
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