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<hr><h1>unicodertf.cpp</h1><div class="fragment"><pre>00001 <font class="comment">/******************************************************************************</font>
00002 <font class="comment"> *</font>
00003 <font class="comment"> * unicodertf - SWFilter decendant to convert a double byte unicode file</font>
00004 <font class="comment"> * to RTF tags</font>
00005 <font class="comment"> */</font>
00006
00007
00008 <font class="preprocessor">#include <stdlib.h></font>
00009 <font class="preprocessor">#include <stdio.h></font>
00010 <font class="preprocessor">#include <unicodertf.h></font>
00011
00012 UnicodeRTF::UnicodeRTF() {
00013 }
00014
00015
00016 <font class="keywordtype">char</font> UnicodeRTF::ProcessText(<font class="keywordtype">char</font> *text, <font class="keywordtype">int</font> maxlen, <font class="keyword">const</font> <a class="code" href="class_s_w_key.html">SWKey</a> *key, <font class="keyword">const</font> <a class="code" href="class_s_w_module.html">SWModule</a> *module)
00017 {
00018 <font class="keywordtype">unsigned</font> <font class="keywordtype">char</font> *to, *from, *maxto;
00019 <font class="keywordtype">int</font> len;
00020 <font class="keywordtype">char</font> digit[10];
00021 <font class="keywordtype">short</font> ch; <font class="comment">// must be signed per unicode spec (negative is ok for big numbers > 32768)</font>
00022
00023 len = strlenw(text) + 2; <font class="comment">// shift string to right of buffer</font>
00024 <font class="keywordflow">if</font> (len < maxlen) {
00025 memmove(&text[maxlen - len], text, len);
00026 from = (<font class="keywordtype">unsigned</font> <font class="keywordtype">char</font>*)&text[maxlen - len];
00027 }
00028 <font class="keywordflow">else</font> from = (<font class="keywordtype">unsigned</font> <font class="keywordtype">char</font>*)text;
00029 maxto =(<font class="keywordtype">unsigned</font> <font class="keywordtype">char</font>*)text + maxlen;
00030
00031 <font class="comment">// -------------------------------</font>
00032 <font class="keywordtype">bool</font> lastUni = <font class="keyword">false</font>;
00033 <font class="keywordflow">for</font> (to = (<font class="keywordtype">unsigned</font> <font class="keywordtype">char</font>*)text; *from && (to <= maxto); from++) {
00034 ch = 0;
00035 <font class="keywordflow">if</font> ((*from & 128) != 128) {
00036 <font class="comment">// if ((*from == ' ') && (lastUni))</font>
00037 <font class="comment">// *to++ = ' ';</font>
00038 *to++ = *from;
00039 lastUni = <font class="keyword">false</font>;
00040 <font class="keywordflow">continue</font>;
00041 }
00042 <font class="keywordflow">if</font> ((*from & 128) && ((*from & 64) != 64)) {
00043 <font class="comment">// error</font>
00044 *from = <font class="charliteral">'x'</font>;
00045 <font class="keywordflow">continue</font>;
00046 }
00047 *from <<= 1;
00048 <font class="keywordtype">int</font> subsequent;
00049 <font class="keywordflow">for</font> (subsequent = 1; (*from & 128); subsequent++) {
00050 *from <<= 1;
00051 from[subsequent] &= 63;
00052 ch <<= 6;
00053 ch |= from[subsequent];
00054 }
00055 subsequent--;
00056 *from <<=1;
00057 <font class="keywordtype">char</font> significantFirstBits = 8 - (2+subsequent);
00058
00059 ch |= (((short)*from) << (((6*subsequent)+significantFirstBits)-8));
00060 from += subsequent;
00061 *to++ = <font class="charliteral">'\\'</font>;
00062 *to++ = <font class="charliteral">'u'</font>;
00063 sprintf(digit, <font class="stringliteral">"%d"</font>, ch);
00064 <font class="keywordflow">for</font> (<font class="keywordtype">char</font> *dig = digit; *dig; dig++)
00065 *to++ = *dig;
00066 *to++ = <font class="charliteral">'?'</font>;
00067 lastUni = <font class="keyword">true</font>;
00068 }
00069
00070 <font class="keywordflow">if</font> (to != maxto) {
00071 *to++ = 0;
00072 }
00073 *to = 0;
00074 <font class="keywordflow">return</font> 0;
00075 }
</pre></div><hr><address align="right"><small>Generated on Thu Jun 20 22:13:01 2002 for The Sword Project by
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