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  23 <h1>iconv.cc</h1><a href="iconv_8cc.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">///</span>
  24 <a name="l00002"></a>00002 <span class="comment"></span><span class="comment">/// \file       iconv.cc</span>
  25 <a name="l00003"></a>00003 <span class="comment"></span><span class="comment">///             iconv wrapper class, and pluggable interface for records</span>
  26 <a name="l00004"></a>00004 <span class="comment"></span><span class="comment">///</span>
  27 <a name="l00005"></a>00005 <span class="comment"></span>
  28 <a name="l00006"></a>00006 <span class="comment">/*</span>
  29 <a name="l00007"></a>00007 <span class="comment">    Copyright (C) 2008-2011, Net Direct Inc. (http://www.netdirect.ca/)</span>
  30 <a name="l00008"></a>00008 <span class="comment"></span>
  31 <a name="l00009"></a>00009 <span class="comment">    This program is free software; you can redistribute it and/or modify</span>
  32 <a name="l00010"></a>00010 <span class="comment">    it under the terms of the GNU General Public License as published by</span>
  33 <a name="l00011"></a>00011 <span class="comment">    the Free Software Foundation; either version 2 of the License, or</span>
  34 <a name="l00012"></a>00012 <span class="comment">    (at your option) any later version.</span>
  35 <a name="l00013"></a>00013 <span class="comment"></span>
  36 <a name="l00014"></a>00014 <span class="comment">    This program is distributed in the hope that it will be useful,</span>
  37 <a name="l00015"></a>00015 <span class="comment">    but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
  38 <a name="l00016"></a>00016 <span class="comment">    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.</span>
  39 <a name="l00017"></a>00017 <span class="comment"></span>
  40 <a name="l00018"></a>00018 <span class="comment">    See the GNU General Public License in the COPYING file at the</span>
  41 <a name="l00019"></a>00019 <span class="comment">    root directory of this project for more details.</span>
  42 <a name="l00020"></a>00020 <span class="comment">*/</span>
  43 <a name="l00021"></a>00021
  44 <a name="l00022"></a>00022 <span class="preprocessor">#include "<a class="code" href="iconv_8h.html" title="iconv wrapper class, and pluggable interface for records">iconv.h</a>"</span>
  45 <a name="l00023"></a>00023 <span class="preprocessor">#include "<a class="code" href="common_8h.html" title="General header for the Barry library.">common.h</a>"</span>
  46 <a name="l00024"></a>00024 <span class="preprocessor">#include "<a class="code" href="error_8h.html" title="Common exception classes for the Barry library.">error.h</a>"</span>
  47 <a name="l00025"></a>00025 <span class="preprocessor">#include "config.h"</span>
  48 <a name="l00026"></a>00026 <span class="preprocessor">#include &lt;errno.h&gt;</span>
  49 <a name="l00027"></a>00027
  50 <a name="l00028"></a>00028 <span class="keyword">namespace </span>Barry {
  51 <a name="l00029"></a>00029 <span class="comment"></span>
  52 <a name="l00030"></a>00030 <span class="comment">//////////////////////////////////////////////////////////////////////////////</span>
  53 <a name="l00031"></a>00031 <span class="comment"></span><span class="comment">// IConvHandle class</span>
  54 <a name="l00032"></a>00032
  55 <a name="l00033"></a>00033 IConvHandle::IConvHandle(<span class="keyword">const</span> <span class="keywordtype">char</span> *fromcode, <span class="keyword">const</span> <span class="keywordtype">char</span> *tocode)
  56 <a name="l00034"></a>00034 {
  57 <a name="l00035"></a>00035         m_handle = iconv_open(tocode, fromcode);
  58 <a name="l00036"></a>00036         <span class="keywordflow">if</span>( m_handle == (iconv_t)(-1) ) {
  59 <a name="l00037"></a>00037                 <span class="keywordflow">throw</span> ErrnoError(std::string(<span class="stringliteral">"iconv_open failed: from "</span>) + fromcode + <span class="stringliteral">" to "</span> + tocode, errno);
  60 <a name="l00038"></a>00038         }
  61 <a name="l00039"></a>00039 }
  62 <a name="l00040"></a>00040
  63 <a name="l00041"></a>00041 IConvHandle::IConvHandle(<span class="keyword">const</span> <span class="keywordtype">char</span> *fromcode, <span class="keyword">const</span> IConverter &amp;ic)
  64 <a name="l00042"></a>00042 {
  65 <a name="l00043"></a>00043         m_handle = iconv_open(ic.m_tocode.c_str(), fromcode);
  66 <a name="l00044"></a>00044         <span class="keywordflow">if</span>( m_handle == (iconv_t)(-1) ) {
  67 <a name="l00045"></a>00045                 <span class="keywordflow">throw</span> ErrnoError(std::string(<span class="stringliteral">"iconv_open failed: from "</span>) + fromcode + <span class="stringliteral">" to "</span> + ic.m_tocode, errno);
  68 <a name="l00046"></a>00046         }
  69 <a name="l00047"></a>00047 }
  70 <a name="l00048"></a>00048
  71 <a name="l00049"></a>00049 IConvHandle::IConvHandle(<span class="keyword">const</span> IConverter &amp;ic, <span class="keyword">const</span> <span class="keywordtype">char</span> *tocode)
  72 <a name="l00050"></a>00050 {
  73 <a name="l00051"></a>00051         m_handle = iconv_open(tocode, ic.m_tocode.c_str());
  74 <a name="l00052"></a>00052         <span class="keywordflow">if</span>( m_handle == (iconv_t)(-1) ) {
  75 <a name="l00053"></a>00053                 <span class="keywordflow">throw</span> ErrnoError(std::string(<span class="stringliteral">"iconv_open failed: from "</span>) + ic.m_tocode + <span class="stringliteral">" to "</span> + tocode, errno);
  76 <a name="l00054"></a>00054         }
  77 <a name="l00055"></a>00055 }
  78 <a name="l00056"></a>00056
  79 <a name="l00057"></a>00057 IConvHandle::~IConvHandle()
  80 <a name="l00058"></a>00058 {
  81 <a name="l00059"></a>00059         iconv_close(m_handle);
  82 <a name="l00060"></a>00060 }
  83 <a name="l00061"></a>00061
  84 <a name="l00062"></a>00062 <span class="comment"></span>
  85 <a name="l00063"></a>00063 <span class="comment">//////////////////////////////////////////////////////////////////////////////</span>
  86 <a name="l00064"></a>00064 <span class="comment"></span><span class="comment">// IConvHandle class</span>
  87 <a name="l00065"></a>00065
  88 <a name="l00066"></a><a class="code" href="classBarry_1_1IConverter.html#a13373a585dba20b64a8361884a57f27">00066</a> <a class="code" href="classBarry_1_1IConverter.html#a13373a585dba20b64a8361884a57f27" title="Always throws ErrnoError if unable to open iconv.">IConverter::IConverter</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *tocode, <span class="keywordtype">bool</span> throw_on_conv_err)
  89 <a name="l00067"></a>00067         : m_from(BLACKBERRY_CHARSET, tocode)
  90 <a name="l00068"></a>00068         , m_to(tocode, BLACKBERRY_CHARSET)
  91 <a name="l00069"></a>00069         , m_tocode(tocode)
  92 <a name="l00070"></a>00070         , m_throw_on_conv_err(throw_on_conv_err)
  93 <a name="l00071"></a>00071 {
  94 <a name="l00072"></a>00072 }
  95 <a name="l00073"></a>00073
  96 <a name="l00074"></a>00074 IConverter::~IConverter()
  97 <a name="l00075"></a>00075 {
  98 <a name="l00076"></a>00076 }
  99 <a name="l00077"></a>00077
 100 <a name="l00078"></a>00078 std::string IConverter::Convert(iconv_t cd, <span class="keyword">const</span> std::string &amp;str)<span class="keyword"> const</span>
 101 <a name="l00079"></a>00079 <span class="keyword"></span>{
 102 <a name="l00080"></a>00080         <span class="keywordtype">size_t</span> target = str.size() * 2;
 103 <a name="l00081"></a>00081         <span class="keywordtype">char</span> *out = 0, *outstart = 0;
 104 <a name="l00082"></a>00082         <span class="keywordtype">size_t</span> outbytesleft = 0;
 105 <a name="l00083"></a>00083         std::string ret;
 106 <a name="l00084"></a>00084
 107 <a name="l00085"></a>00085         <span class="comment">// this loop is for the very odd case that the output string</span>
 108 <a name="l00086"></a>00086         <span class="comment">// needs more than twice the input size</span>
 109 <a name="l00087"></a>00087         <span class="keywordflow">for</span>( <span class="keywordtype">int</span> tries = 0; ; tries++ ) {
 110 <a name="l00088"></a>00088
 111 <a name="l00089"></a>00089                 <span class="keyword">const</span> <span class="keywordtype">char</span> *in = str.data();
 112 <a name="l00090"></a>00090                 <span class="keywordtype">size_t</span> inbytesleft = str.size();
 113 <a name="l00091"></a>00091                 out = outstart = (<span class="keywordtype">char</span>*) m_buffer.GetBuffer(target);
 114 <a name="l00092"></a>00092                 outbytesleft = m_buffer.GetBufSize();
 115 <a name="l00093"></a>00093
 116 <a name="l00094"></a>00094                 iconv(cd, NULL, NULL, NULL, NULL);      <span class="comment">// reset cd's state</span>
 117 <a name="l00095"></a>00095                 <span class="keywordtype">size_t</span> status = iconv(cd, (ICONV_CONST <span class="keywordtype">char</span>**) &amp;in, &amp;inbytesleft, &amp;out, &amp;outbytesleft);
 118 <a name="l00096"></a>00096
 119 <a name="l00097"></a>00097                 <span class="keywordflow">if</span>( status == (<span class="keywordtype">size_t</span>)(-1) ) {
 120 <a name="l00098"></a>00098                         <span class="keywordflow">if</span>( errno == E2BIG &amp;&amp; tries &lt; 2 ) {
 121 <a name="l00099"></a>00099                                 target += inbytesleft * 2;
 122 <a name="l00100"></a>00100                                 <span class="comment">// try again with more memory...</span>
 123 <a name="l00101"></a>00101                                 <span class="keywordflow">continue</span>;
 124 <a name="l00102"></a>00102                         }
 125 <a name="l00103"></a>00103
 126 <a name="l00104"></a>00104                         <span class="comment">// should never happen :-)</span>
 127 <a name="l00105"></a>00105                         <span class="comment">// but if it does, and we get here, check</span>
 128 <a name="l00106"></a>00106                         <span class="comment">// whether the user wants to be notified by</span>
 129 <a name="l00107"></a>00107                         <span class="comment">// exception... if not, just fall through and</span>
 130 <a name="l00108"></a>00108                         <span class="comment">// store as much converted data as possible</span>
 131 <a name="l00109"></a>00109                         <span class="keywordflow">if</span>( m_throw_on_conv_err ) {
 132 <a name="l00110"></a>00110                                 <span class="keywordflow">throw</span> ErrnoError(<span class="stringliteral">"iconv failed"</span>, errno);
 133 <a name="l00111"></a>00111                         }
 134 <a name="l00112"></a>00112                 }
 135 <a name="l00113"></a>00113                 <span class="keywordflow">else</span> {
 136 <a name="l00114"></a>00114                         <span class="comment">// success</span>
 137 <a name="l00115"></a>00115                         <span class="keywordflow">break</span>;
 138 <a name="l00116"></a>00116                 }
 139 <a name="l00117"></a>00117         }
 140 <a name="l00118"></a>00118
 141 <a name="l00119"></a>00119         <span class="comment">// store any available converted data</span>
 142 <a name="l00120"></a>00120         ret.assign(outstart, out - outstart);
 143 <a name="l00121"></a>00121         <span class="keywordflow">return</span> ret;
 144 <a name="l00122"></a>00122 }
 145 <a name="l00123"></a>00123
 146 <a name="l00124"></a>00124 std::string IConverter::FromBB(<span class="keyword">const</span> std::string &amp;str)<span class="keyword"> const</span>
 147 <a name="l00125"></a>00125 <span class="keyword"></span>{
 148 <a name="l00126"></a>00126         <span class="keywordflow">return</span> Convert(m_from.m_handle, str);
 149 <a name="l00127"></a>00127 }
 150 <a name="l00128"></a>00128
 151 <a name="l00129"></a>00129 std::string IConverter::ToBB(<span class="keyword">const</span> std::string &amp;str)<span class="keyword"> const</span>
 152 <a name="l00130"></a>00130 <span class="keyword"></span>{
 153 <a name="l00131"></a>00131         <span class="keywordflow">return</span> Convert(m_to.m_handle, str);
 154 <a name="l00132"></a>00132 }
 155 <a name="l00133"></a>00133
 156 <a name="l00134"></a>00134 std::string IConverter::Convert(<span class="keyword">const</span> IConvHandle &amp;custom, <span class="keyword">const</span> std::string &amp;str)<span class="keyword"> const</span>
 157 <a name="l00135"></a>00135 <span class="keyword"></span>{
 158 <a name="l00136"></a>00136         <span class="keywordflow">return</span> Convert(custom.m_handle, str);
 159 <a name="l00137"></a>00137 }
 160 <a name="l00138"></a>00138
 161 <a name="l00139"></a>00139 } <span class="comment">// namespace Barry</span>
 162 <a name="l00140"></a>00140
 163 </pre></div></div>
 164 <hr size="1"><address style="text-align: right;"><small>Generated on Thu Feb 10 16:13:58 2011 for Barry by&nbsp;
 165 <a href="http://www.doxygen.org/index.html">
 166 <img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.6 </small></address>
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