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<hr><h1>swbasicfilter.cpp</h1><div class="fragment"><pre>00001 <font class="comment">/******************************************************************************</font>
00002 <font class="comment"> * swbasicfilter.h - definition of class SWBasicFilter. An SWFilter</font>
00003 <font class="comment"> * impl that provides some basic methods that</font>
00004 <font class="comment"> * many filters will need and can use as a starting</font>
00005 <font class="comment"> * point. </font>
00006 <font class="comment"> *</font>
00007 <font class="comment"> * $Id: swbasicfilter_8cpp-source.html,v 1.3 2002/06/20 20:23:10 mgruner Exp $</font>
00008 <font class="comment"> *</font>
00009 <font class="comment"> * Copyright 2001 CrossWire Bible Society (http://www.crosswire.org)</font>
00010 <font class="comment"> * CrossWire Bible Society</font>
00011 <font class="comment"> * P. O. Box 2528</font>
00012 <font class="comment"> * Tempe, AZ 85280-2528</font>
00013 <font class="comment"> *</font>
00014 <font class="comment"> * This program is free software; you can redistribute it and/or modify it</font>
00015 <font class="comment"> * under the terms of the GNU General Public License as published by the</font>
00016 <font class="comment"> * Free Software Foundation version 2.</font>
00017 <font class="comment"> *</font>
00018 <font class="comment"> * This program is distributed in the hope that it will be useful, but</font>
00019 <font class="comment"> * WITHOUT ANY WARRANTY; without even the implied warranty of</font>
00020 <font class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</font>
00021 <font class="comment"> * General Public License for more details.</font>
00022 <font class="comment"> *</font>
00023 <font class="comment"> */</font>
00024
00025 <font class="preprocessor">#include <stdlib.h></font>
00026 <font class="preprocessor">#include <string.h></font>
00027 <font class="preprocessor">#include <swbasicfilter.h></font>
00028 <font class="preprocessor">#include <stdio.h></font>
00029 <font class="preprocessor">#include <stdarg.h></font>
00030
00031 SWBasicFilter::SWBasicFilter() {
00032 tokenStart = 0;
00033 tokenEnd = 0;
00034 escStart = 0;
00035 escEnd = 0;
00036
00037 setTokenStart(<font class="stringliteral">"<"</font>);
00038 setTokenEnd(<font class="stringliteral">">"</font>);
00039 setEscapeStart(<font class="stringliteral">"&"</font>);
00040 setEscapeEnd(<font class="stringliteral">";"</font>);
00041
00042 escStringCaseSensitive = <font class="keyword">false</font>;
00043 tokenCaseSensitive = <font class="keyword">false</font>;
00044 passThruUnknownToken = <font class="keyword">false</font>;
00045 passThruUnknownEsc = <font class="keyword">false</font>;
00046 }
00047
00048
<a name="l00049"></a><a class="code" href="class_s_w_basic_filter.html#b4">00049</a> <font class="keywordtype">void</font> <a class="code" href="class_s_w_basic_filter.html#b4">SWBasicFilter::setPassThruUnknownToken</a>(<font class="keywordtype">bool</font> val) {
00050 passThruUnknownToken = val;
00051 }
00052
00053
<a name="l00054"></a><a class="code" href="class_s_w_basic_filter.html#b5">00054</a> <font class="keywordtype">void</font> <a class="code" href="class_s_w_basic_filter.html#b5">SWBasicFilter::setPassThruUnknownEscapeString</a>(<font class="keywordtype">bool</font> val) {
00055 passThruUnknownEsc = val;
00056 }
00057
00058
00059 <font class="keywordtype">void</font> SWBasicFilter::setTokenCaseSensitive(<font class="keywordtype">bool</font> val) {
00060 tokenCaseSensitive = val;
00061 }
00062
00063
00064 <font class="keywordtype">void</font> SWBasicFilter::setEscapeStringCaseSensitive(<font class="keywordtype">bool</font> val) {
00065 escStringCaseSensitive = val;
00066 }
00067
00068
00069 SWBasicFilter::~SWBasicFilter() {
00070 <font class="keywordflow">if</font> (tokenStart)
00071 <font class="keyword">delete</font> [] tokenStart;
00072
00073 <font class="keywordflow">if</font> (tokenEnd)
00074 <font class="keyword">delete</font> [] tokenEnd;
00075
00076 <font class="keywordflow">if</font> (escStart)
00077 <font class="keyword">delete</font> [] escStart;
00078
00079 <font class="keywordflow">if</font> (escEnd)
00080 <font class="keyword">delete</font> [] escEnd;
00081 }
00082
00083
00084 <font class="keywordtype">void</font> SWBasicFilter::addTokenSubstitute(<font class="keyword">const</font> <font class="keywordtype">char</font> *findString, <font class="keyword">const</font> <font class="keywordtype">char</font> *replaceString) {
00085 <font class="keywordtype">char</font> *buf = 0;
00086
00087 <font class="keywordflow">if</font> (!tokenCaseSensitive) {
00088 stdstr(&buf, findString);
00089 toupperstr(buf);
00090 tokenSubMap.insert(DualStringMap::value_type(buf, replaceString));
00091 <font class="keyword">delete</font> [] buf;
00092 }
00093 <font class="keywordflow">else</font> tokenSubMap.insert(DualStringMap::value_type(findString, replaceString));
00094 }
00095
00096
00097 <font class="keywordtype">void</font> SWBasicFilter::addEscapeStringSubstitute(<font class="keyword">const</font> <font class="keywordtype">char</font> *findString, <font class="keyword">const</font> <font class="keywordtype">char</font> *replaceString) {
00098 <font class="keywordtype">char</font> *buf = 0;
00099
00100 <font class="keywordflow">if</font> (!escStringCaseSensitive) {
00101 stdstr(&buf, findString);
00102 toupperstr(buf);
00103 escSubMap.insert(DualStringMap::value_type(buf, replaceString));
00104 <font class="keyword">delete</font> [] buf;
00105 }
00106 <font class="keywordflow">else</font> escSubMap.insert(DualStringMap::value_type(findString, replaceString));
00107 }
00108
00109
<a name="l00110"></a><a class="code" href="class_s_w_basic_filter.html#b12">00110</a> <font class="keywordtype">void</font> <a class="code" href="class_s_w_basic_filter.html#b12">SWBasicFilter::pushString</a>(<font class="keywordtype">char</font> **buf, <font class="keyword">const</font> <font class="keywordtype">char</font> *format, ...) {
00111 va_list argptr;
00112
00113 va_start(argptr, format);
00114 *buf += vsprintf(*buf, format, argptr);
00115 va_end(argptr);
00116
00117 <font class="comment">// *buf += strlen(*buf);</font>
00118 }
00119
00120
00121 <font class="keywordtype">bool</font> SWBasicFilter::substituteToken(<font class="keywordtype">char</font> **buf, <font class="keyword">const</font> <font class="keywordtype">char</font> *token) {
00122 DualStringMap::iterator it;
00123
00124 <font class="keywordflow">if</font> (!tokenCaseSensitive) {
00125 <font class="keywordtype">char</font> *tmp = 0;
00126 stdstr(&tmp, token);
00127 toupperstr(tmp);
00128 it = tokenSubMap.find(tmp);
00129 <font class="keyword">delete</font> [] tmp;
00130 } <font class="keywordflow">else</font>
00131 it = tokenSubMap.find(token);
00132
00133 <font class="keywordflow">if</font> (it != tokenSubMap.end()) {
00134 <a class="code" href="class_s_w_basic_filter.html#b12">pushString</a>(buf, it->second.c_str());
00135 <font class="keywordflow">return</font> <font class="keyword">true</font>;
00136 }
00137 <font class="keywordflow">return</font> <font class="keyword">false</font>;
00138 }
00139
00140
00141 <font class="keywordtype">bool</font> SWBasicFilter::substituteEscapeString(<font class="keywordtype">char</font> **buf, <font class="keyword">const</font> <font class="keywordtype">char</font> *escString) {
00142 DualStringMap::iterator it;
00143
00144 <font class="keywordflow">if</font> (!escStringCaseSensitive) {
00145 <font class="keywordtype">char</font> *tmp = 0;
00146 stdstr(&tmp, escString);
00147 toupperstr(tmp);
00148 it = escSubMap.find(tmp);
00149 <font class="keyword">delete</font> [] tmp;
00150 } <font class="keywordflow">else</font>
00151 it = escSubMap.find(escString);
00152
00153 <font class="keywordflow">if</font> (it != escSubMap.end()) {
00154 <a class="code" href="class_s_w_basic_filter.html#b12">pushString</a>(buf, it->second.c_str());
00155 <font class="keywordflow">return</font> <font class="keyword">true</font>;
00156 }
00157 <font class="keywordflow">return</font> <font class="keyword">false</font>;
00158 }
00159
00160
<a name="l00161"></a><a class="code" href="class_s_w_basic_filter.html#b13">00161</a> <font class="keywordtype">bool</font> <a class="code" href="class_s_w_basic_filter.html#b13">SWBasicFilter::handleToken</a>(<font class="keywordtype">char</font> **buf, <font class="keyword">const</font> <font class="keywordtype">char</font> *token, DualStringMap &userData) {
00162 <font class="keywordflow">return</font> substituteToken(buf, token);
00163 }
00164
00165
<a name="l00166"></a><a class="code" href="class_s_w_basic_filter.html#b14">00166</a> <font class="keywordtype">bool</font> <a class="code" href="class_s_w_basic_filter.html#b14">SWBasicFilter::handleEscapeString</a>(<font class="keywordtype">char</font> **buf, <font class="keyword">const</font> <font class="keywordtype">char</font> *escString, DualStringMap &userData) {
00167 <font class="keywordflow">return</font> substituteEscapeString(buf, escString);
00168 }
00169
00170
<a name="l00171"></a><a class="code" href="class_s_w_basic_filter.html#b0">00171</a> <font class="keywordtype">void</font> <a class="code" href="class_s_w_basic_filter.html#b0">SWBasicFilter::setEscapeStart</a>(<font class="keyword">const</font> <font class="keywordtype">char</font> *escStart) {
00172 stdstr(&(this->escStart), escStart);
00173 }
00174
00175
<a name="l00176"></a><a class="code" href="class_s_w_basic_filter.html#b1">00176</a> <font class="keywordtype">void</font> <a class="code" href="class_s_w_basic_filter.html#b1">SWBasicFilter::setEscapeEnd</a>(<font class="keyword">const</font> <font class="keywordtype">char</font> *escEnd) {
00177 stdstr(&(this->escEnd), escEnd);
00178 }
00179
00180
<a name="l00181"></a><a class="code" href="class_s_w_basic_filter.html#b2">00181</a> <font class="keywordtype">void</font> <a class="code" href="class_s_w_basic_filter.html#b2">SWBasicFilter::setTokenStart</a>(<font class="keyword">const</font> <font class="keywordtype">char</font> *tokenStart) {
00182 stdstr(&(this->tokenStart), tokenStart);
00183 }
00184
00185
<a name="l00186"></a><a class="code" href="class_s_w_basic_filter.html#b3">00186</a> <font class="keywordtype">void</font> <a class="code" href="class_s_w_basic_filter.html#b3">SWBasicFilter::setTokenEnd</a>(<font class="keyword">const</font> <font class="keywordtype">char</font> *tokenEnd) {
00187 stdstr(&(this->tokenEnd), tokenEnd);
00188 }
00189
00190
00191 <font class="keywordtype">char</font> SWBasicFilter::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) {
00192 this->key = key;
00193 this->module = module;
00194 <font class="keywordtype">char</font> *to, *from, token[4096];
00195 <font class="keywordtype">int</font> tokpos = 0;
00196 <font class="keywordtype">bool</font> intoken = <font class="keyword">false</font>;
00197 <font class="keywordtype">int</font> len;
00198 <font class="keywordtype">bool</font> inEsc = <font class="keyword">false</font>;
00199 <font class="keywordtype">char</font> escStartLen = strlen(escStart);
00200 <font class="keywordtype">char</font> escEndLen = strlen(escEnd);
00201 <font class="keywordtype">char</font> escStartPos = 0, escEndPos = 0;
00202 <font class="keywordtype">char</font> tokenStartLen = strlen(tokenStart);
00203 <font class="keywordtype">char</font> tokenEndLen = strlen(tokenEnd);
00204 <font class="keywordtype">char</font> tokenStartPos = 0, tokenEndPos = 0;
00205 DualStringMap userData;
00206 string lastTextNode;
00207
00208 <font class="keywordtype">bool</font> suspendTextPassThru = <font class="keyword">false</font>;
00209 userData[<font class="stringliteral">"suspendTextPassThru"</font>] = <font class="stringliteral">"false"</font>;
00210
00211 len = strlen(text) + 1; <font class="comment">// shift string to right of buffer</font>
00212 <font class="keywordflow">if</font> (len < maxlen) {
00213 memmove(&text[maxlen - len], text, len);
00214 from = &text[maxlen - len];
00215 }
00216 <font class="keywordflow">else</font> from = text; <font class="comment">// -------------------------------</font>
00217
00218 resultBuffer = text;
00219
00220 <font class="keywordflow">for</font> (to = text; *from; from++) {
00221 <font class="keywordflow">if</font> (*from == tokenStart[tokenStartPos]) {
00222 <font class="keywordflow">if</font> (tokenStartPos == (tokenStartLen - 1)) {
00223 intoken = <font class="keyword">true</font>;
00224 tokpos = 0;
00225 token[0] = 0;
00226 token[1] = 0;
00227 token[2] = 0;
00228 inEsc = <font class="keyword">false</font>;
00229 }
00230 <font class="keywordflow">else</font> tokenStartPos++;
00231 <font class="keywordflow">continue</font>;
00232 }
00233
00234 <font class="keywordflow">if</font> (*from == escStart[escStartPos]) {
00235 <font class="keywordflow">if</font> (escStartPos == (escStartLen - 1)) {
00236 intoken = <font class="keyword">true</font>;
00237 tokpos = 0;
00238 token[0] = 0;
00239 token[1] = 0;
00240 token[2] = 0;
00241 inEsc = <font class="keyword">true</font>;
00242 }
00243 <font class="keywordflow">else</font> escStartPos++;
00244 <font class="keywordflow">continue</font>;
00245 }
00246
00247 <font class="keywordflow">if</font> (inEsc) {
00248 <font class="keywordflow">if</font> (*from == escEnd[escEndPos]) {
00249 <font class="keywordflow">if</font> (escEndPos == (escEndLen - 1)) {
00250 intoken = <font class="keyword">false</font>;
00251 userData[<font class="stringliteral">"lastTextNode"</font>] = lastTextNode;
00252 <font class="keywordflow">if</font> ((!<a class="code" href="class_s_w_basic_filter.html#b14">handleEscapeString</a>(&to, token, userData)) && (passThruUnknownEsc)) {
00253 <a class="code" href="class_s_w_basic_filter.html#b12">pushString</a>(&to, escStart);
00254 <a class="code" href="class_s_w_basic_filter.html#b12">pushString</a>(&to, token);
00255 <a class="code" href="class_s_w_basic_filter.html#b12">pushString</a>(&to, escEnd);
00256 }
00257 escEndPos = escStartPos = tokenEndPos = tokenStartPos = 0;
00258 lastTextNode = <font class="stringliteral">""</font>;
00259 suspendTextPassThru = (!userData[<font class="stringliteral">"suspendTextPassThru"</font>].compare(<font class="stringliteral">"true"</font>));
00260 <font class="keywordflow">continue</font>;
00261 }
00262 }
00263 }
00264
00265 <font class="keywordflow">if</font> (!inEsc) {
00266 <font class="keywordflow">if</font> (*from == tokenEnd[tokenEndPos]) {
00267 <font class="keywordflow">if</font> (tokenEndPos == (tokenEndLen - 1)) {
00268 intoken = <font class="keyword">false</font>;
00269 userData[<font class="stringliteral">"lastTextNode"</font>] = lastTextNode;
00270 <font class="keywordflow">if</font> ((!<a class="code" href="class_s_w_basic_filter.html#b13">handleToken</a>(&to, token, userData)) && (passThruUnknownToken)) {
00271 <a class="code" href="class_s_w_basic_filter.html#b12">pushString</a>(&to, tokenStart);
00272 <a class="code" href="class_s_w_basic_filter.html#b12">pushString</a>(&to, token);
00273 <a class="code" href="class_s_w_basic_filter.html#b12">pushString</a>(&to, tokenEnd);
00274 }
00275 escEndPos = escStartPos = tokenEndPos = tokenStartPos = 0;
00276 lastTextNode = <font class="stringliteral">""</font>;
00277 suspendTextPassThru = (!userData[<font class="stringliteral">"suspendTextPassThru"</font>].compare(<font class="stringliteral">"true"</font>));
00278 <font class="keywordflow">continue</font>;
00279 }
00280 }
00281 }
00282
00283 <font class="keywordflow">if</font> (intoken) {
00284 <font class="keywordflow">if</font> (tokpos < 4090)
00285 token[tokpos++] = *from;
00286 token[tokpos+2] = 0;
00287 }
00288 <font class="keywordflow">else</font> {
00289 <font class="keywordflow">if</font> (!suspendTextPassThru)
00290 *to++ = *from;
00291 lastTextNode += *from;
00292 }
00293 }
00294 *to++ = 0;
00295 *to = 0;
00296 <font class="keywordflow">return</font> 0;
00297 }
00298
00299
00300
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