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<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>
<a name="l00002"></a>00002 <span class="comment"></span><span class="comment">/// \file iconv.cc</span>
<a name="l00003"></a>00003 <span class="comment"></span><span class="comment">/// iconv wrapper class, and pluggable interface for records</span>
<a name="l00004"></a>00004 <span class="comment"></span><span class="comment">///</span>
<a name="l00005"></a>00005 <span class="comment"></span>
<a name="l00006"></a>00006 <span class="comment">/*</span>
<a name="l00007"></a>00007 <span class="comment"> Copyright (C) 2008-2011, Net Direct Inc. (http://www.netdirect.ca/)</span>
<a name="l00008"></a>00008 <span class="comment"></span>
<a name="l00009"></a>00009 <span class="comment"> This program is free software; you can redistribute it and/or modify</span>
<a name="l00010"></a>00010 <span class="comment"> it under the terms of the GNU General Public License as published by</span>
<a name="l00011"></a>00011 <span class="comment"> the Free Software Foundation; either version 2 of the License, or</span>
<a name="l00012"></a>00012 <span class="comment"> (at your option) any later version.</span>
<a name="l00013"></a>00013 <span class="comment"></span>
<a name="l00014"></a>00014 <span class="comment"> This program is distributed in the hope that it will be useful,</span>
<a name="l00015"></a>00015 <span class="comment"> but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00016"></a>00016 <span class="comment"> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.</span>
<a name="l00017"></a>00017 <span class="comment"></span>
<a name="l00018"></a>00018 <span class="comment"> See the GNU General Public License in the COPYING file at the</span>
<a name="l00019"></a>00019 <span class="comment"> root directory of this project for more details.</span>
<a name="l00020"></a>00020 <span class="comment">*/</span>
<a name="l00021"></a>00021
<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>
<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>
<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>
<a name="l00025"></a>00025 <span class="preprocessor">#include "config.h"</span>
<a name="l00026"></a>00026 <span class="preprocessor">#include <errno.h></span>
<a name="l00027"></a>00027 <span class="preprocessor">#include <string></span>
<a name="l00028"></a>00028
<a name="l00029"></a>00029 <span class="keyword">using namespace </span>std;
<a name="l00030"></a>00030
<a name="l00031"></a>00031 <span class="keyword">namespace </span>Barry {
<a name="l00032"></a>00032 <span class="comment"></span>
<a name="l00033"></a>00033 <span class="comment">//////////////////////////////////////////////////////////////////////////////</span>
<a name="l00034"></a>00034 <span class="comment"></span><span class="comment">// IConvHandle class</span>
<a name="l00035"></a>00035
<a name="l00036"></a>00036 IConvHandle::IConvHandle(<span class="keyword">const</span> <span class="keywordtype">char</span> *fromcode, <span class="keyword">const</span> <span class="keywordtype">char</span> *tocode)
<a name="l00037"></a>00037 {
<a name="l00038"></a>00038 m_handle = iconv_open(tocode, fromcode);
<a name="l00039"></a>00039 <span class="keywordflow">if</span>( m_handle == (iconv_t)(-1) ) {
<a name="l00040"></a>00040 <span class="keywordflow">throw</span> ErrnoError(std::string(<span class="stringliteral">"iconv_open failed: from "</span>) + fromcode + <span class="stringliteral">" to "</span> + tocode, errno);
<a name="l00041"></a>00041 }
<a name="l00042"></a>00042 }
<a name="l00043"></a>00043
<a name="l00044"></a>00044 IConvHandle::IConvHandle(<span class="keyword">const</span> <span class="keywordtype">char</span> *fromcode, <span class="keyword">const</span> IConverter &ic)
<a name="l00045"></a>00045 {
<a name="l00046"></a>00046 m_handle = iconv_open(ic.m_tocode.c_str(), fromcode);
<a name="l00047"></a>00047 <span class="keywordflow">if</span>( m_handle == (iconv_t)(-1) ) {
<a name="l00048"></a>00048 <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);
<a name="l00049"></a>00049 }
<a name="l00050"></a>00050 }
<a name="l00051"></a>00051
<a name="l00052"></a>00052 IConvHandle::IConvHandle(<span class="keyword">const</span> IConverter &ic, <span class="keyword">const</span> <span class="keywordtype">char</span> *tocode)
<a name="l00053"></a>00053 {
<a name="l00054"></a>00054 m_handle = iconv_open(tocode, ic.m_tocode.c_str());
<a name="l00055"></a>00055 <span class="keywordflow">if</span>( m_handle == (iconv_t)(-1) ) {
<a name="l00056"></a>00056 <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);
<a name="l00057"></a>00057 }
<a name="l00058"></a>00058 }
<a name="l00059"></a>00059
<a name="l00060"></a>00060 IConvHandle::~IConvHandle()
<a name="l00061"></a>00061 {
<a name="l00062"></a>00062 iconv_close(m_handle);
<a name="l00063"></a>00063 }
<a name="l00064"></a>00064
<a name="l00065"></a>00065 <span class="comment"></span>
<a name="l00066"></a>00066 <span class="comment">//////////////////////////////////////////////////////////////////////////////</span>
<a name="l00067"></a>00067 <span class="comment"></span><span class="comment">// IConvHandle class</span>
<a name="l00068"></a>00068
<a name="l00069"></a><a class="code" href="classBarry_1_1IConverter.html#a13373a585dba20b64a8361884a57f27">00069</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)
<a name="l00070"></a>00070 : m_from(BLACKBERRY_CHARSET, tocode)
<a name="l00071"></a>00071 , m_to(tocode, BLACKBERRY_CHARSET)
<a name="l00072"></a>00072 , m_tocode(tocode)
<a name="l00073"></a>00073 , m_throw_on_conv_err(throw_on_conv_err)
<a name="l00074"></a>00074 {
<a name="l00075"></a>00075 }
<a name="l00076"></a>00076
<a name="l00077"></a>00077 IConverter::~IConverter()
<a name="l00078"></a>00078 {
<a name="l00079"></a>00079 }
<a name="l00080"></a>00080
<a name="l00081"></a>00081 std::string IConverter::Convert(iconv_t cd, <span class="keyword">const</span> std::string &str)<span class="keyword"> const</span>
<a name="l00082"></a>00082 <span class="keyword"></span>{
<a name="l00083"></a>00083 <span class="keywordtype">size_t</span> target = str.size() * 2;
<a name="l00084"></a>00084 <span class="keywordtype">char</span> *out = 0, *outstart = 0;
<a name="l00085"></a>00085 <span class="keywordtype">size_t</span> outbytesleft = 0;
<a name="l00086"></a>00086 std::string ret;
<a name="l00087"></a>00087
<a name="l00088"></a>00088 <span class="comment">// this loop is for the very odd case that the output string</span>
<a name="l00089"></a>00089 <span class="comment">// needs more than twice the input size</span>
<a name="l00090"></a>00090 <span class="keywordflow">for</span>( <span class="keywordtype">int</span> tries = 0; ; tries++ ) {
<a name="l00091"></a>00091
<a name="l00092"></a>00092 <span class="keyword">const</span> <span class="keywordtype">char</span> *in = str.data();
<a name="l00093"></a>00093 <span class="keywordtype">size_t</span> inbytesleft = str.size();
<a name="l00094"></a>00094 out = outstart = (<span class="keywordtype">char</span>*) m_buffer.GetBuffer(target);
<a name="l00095"></a>00095 outbytesleft = m_buffer.GetBufSize();
<a name="l00096"></a>00096
<a name="l00097"></a>00097 iconv(cd, NULL, NULL, NULL, NULL); <span class="comment">// reset cd's state</span>
<a name="l00098"></a>00098 <span class="keywordtype">size_t</span> status = iconv(cd, (ICONV_CONST <span class="keywordtype">char</span>**) &in, &inbytesleft, &out, &outbytesleft);
<a name="l00099"></a>00099
<a name="l00100"></a>00100 <span class="keywordflow">if</span>( status == (<span class="keywordtype">size_t</span>)(-1) ) {
<a name="l00101"></a>00101 <span class="keywordflow">if</span>( errno == E2BIG && tries < 2 ) {
<a name="l00102"></a>00102 target += inbytesleft * 2;
<a name="l00103"></a>00103 <span class="comment">// try again with more memory...</span>
<a name="l00104"></a>00104 <span class="keywordflow">continue</span>;
<a name="l00105"></a>00105 }
<a name="l00106"></a>00106
<a name="l00107"></a>00107 <span class="comment">// should never happen :-)</span>
<a name="l00108"></a>00108 <span class="comment">// but if it does, and we get here, check</span>
<a name="l00109"></a>00109 <span class="comment">// whether the user wants to be notified by</span>
<a name="l00110"></a>00110 <span class="comment">// exception... if not, just fall through and</span>
<a name="l00111"></a>00111 <span class="comment">// store as much converted data as possible</span>
<a name="l00112"></a>00112 ErrnoError e(<span class="keywordtype">string</span>(<span class="stringliteral">"iconv failed with string '"</span>) + str + <span class="stringliteral">"'"</span>, errno);
<a name="l00113"></a>00113 <span class="keywordflow">if</span>( m_throw_on_conv_err ) {
<a name="l00114"></a>00114 <span class="keywordflow">throw</span> e;
<a name="l00115"></a>00115 }
<a name="l00116"></a>00116 <span class="keywordflow">else</span> {
<a name="l00117"></a>00117 cerr << e.what();
<a name="l00118"></a>00118 <span class="comment">// return the unconverted string</span>
<a name="l00119"></a>00119 <span class="keywordflow">return</span> str;
<a name="l00120"></a>00120 }
<a name="l00121"></a>00121 }
<a name="l00122"></a>00122 <span class="keywordflow">else</span> {
<a name="l00123"></a>00123 <span class="comment">// success</span>
<a name="l00124"></a>00124 <span class="keywordflow">break</span>;
<a name="l00125"></a>00125 }
<a name="l00126"></a>00126 }
<a name="l00127"></a>00127
<a name="l00128"></a>00128 <span class="comment">// store any available converted data</span>
<a name="l00129"></a>00129 ret.assign(outstart, out - outstart);
<a name="l00130"></a>00130 <span class="keywordflow">return</span> ret;
<a name="l00131"></a>00131 }
<a name="l00132"></a>00132
<a name="l00133"></a>00133 std::string IConverter::FromBB(<span class="keyword">const</span> std::string &str)<span class="keyword"> const</span>
<a name="l00134"></a>00134 <span class="keyword"></span>{
<a name="l00135"></a>00135 <span class="keywordflow">return</span> Convert(m_from.m_handle, str);
<a name="l00136"></a>00136 }
<a name="l00137"></a>00137
<a name="l00138"></a>00138 std::string IConverter::ToBB(<span class="keyword">const</span> std::string &str)<span class="keyword"> const</span>
<a name="l00139"></a>00139 <span class="keyword"></span>{
<a name="l00140"></a>00140 <span class="keywordflow">return</span> Convert(m_to.m_handle, str);
<a name="l00141"></a>00141 }
<a name="l00142"></a>00142
<a name="l00143"></a>00143 std::string IConverter::Convert(<span class="keyword">const</span> IConvHandle &custom, <span class="keyword">const</span> std::string &str)<span class="keyword"> const</span>
<a name="l00144"></a>00144 <span class="keyword"></span>{
<a name="l00145"></a>00145 <span class="keywordflow">return</span> Convert(custom.m_handle, str);
<a name="l00146"></a>00146 }
<a name="l00147"></a>00147
<a name="l00148"></a>00148 } <span class="comment">// namespace Barry</span>
<a name="l00149"></a>00149
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