Imported existing code

indra/llui/lltextparser.cpp

@@ -0,0 +1,259 @@
+/** 
+ * @file lltextparser.cpp
+ *
+ * $LicenseInfo:firstyear=2001&license=viewergpl$
+ * 
+ * Copyright (c) 2001-2009, Linden Research, Inc.
+ * 
+ * Second Life Viewer Source Code
+ * The source code in this file ("Source Code") is provided by Linden Lab
+ * to you under the terms of the GNU General Public License, version 2.0
+ * ("GPL"), unless you have obtained a separate licensing agreement
+ * ("Other License"), formally executed by you and Linden Lab.  Terms of
+ * the GPL can be found in doc/GPL-license.txt in this distribution, or
+ * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
+ * 
+ * There are special exceptions to the terms and conditions of the GPL as
+ * it is applied to this Source Code. View the full text of the exception
+ * in the file doc/FLOSS-exception.txt in this software distribution, or
+ * online at
+ * http://secondlifegrid.net/programs/open_source/licensing/flossexception
+ * 
+ * By copying, modifying or distributing this software, you acknowledge
+ * that you have read and understood your obligations described above,
+ * and agree to abide by those obligations.
+ * 
+ * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
+ * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
+ * COMPLETENESS OR PERFORMANCE.
+ * $/LicenseInfo$
+ */
+
+#include "linden_common.h"
+
+#include "lltextparser.h"
+
+#include "llsd.h"
+#include "llsdserialize.h"
+#include "llerror.h"
+#include "lluuid.h"
+#include "llstring.h"
+#include "message.h"
+#include "llmath.h"
+#include "v4color.h"
+#include "lldir.h"
+
+// Routines used for parsing text for TextParsers and html
+
+LLTextParser* LLTextParser::sInstance = NULL;
+
+//
+// Member Functions
+//
+
+LLTextParser::~LLTextParser()
+{
+	sInstance=NULL;
+}
+
+// static
+LLTextParser* LLTextParser::getInstance()
+{
+	if (!sInstance)
+	{
+		sInstance = new LLTextParser();
+		sInstance->loadFromDisk();
+	}
+	return sInstance;
+}
+
+// Moved triggerAlerts() to llfloaterchat.cpp to break llui/llaudio library dependency.
+
+S32 LLTextParser::findPattern(const std::string &text, LLSD highlight)
+{
+	if (!highlight.has("pattern")) return -1;
+	
+	std::string pattern=std::string(highlight["pattern"]);
+	std::string ltext=text;
+	
+	if (!(bool)highlight["case_sensitive"])
+	{
+		ltext   = utf8str_tolower(text);
+		pattern= utf8str_tolower(pattern);
+	}
+
+	size_t found=std::string::npos;
+	
+	switch ((S32)highlight["condition"])
+	{
+		case CONTAINS:
+			found = ltext.find(pattern); 
+			break;
+		case MATCHES:
+		    found = (! ltext.compare(pattern) ? 0 : std::string::npos);
+			break;
+		case STARTS_WITH:
+			found = (! ltext.find(pattern) ? 0 : std::string::npos);
+			break;
+		case ENDS_WITH:
+			S32 pos = ltext.rfind(pattern); 
+			if (pos >= 0 && (ltext.length()-pattern.length()==pos)) found = pos;
+			break;
+	}
+	return found;
+}
+
+LLSD LLTextParser::parsePartialLineHighlights(const std::string &text, const LLColor4 &color, S32 part, S32 index)
+{
+	//evil recursive string atomizer.
+	LLSD ret_llsd, start_llsd, middle_llsd, end_llsd;
+
+	for (S32 i=index;i<mHighlights.size();i++)
+	{
+		S32 condition = mHighlights[i]["condition"];
+		if ((S32)mHighlights[i]["highlight"]==PART && condition!=MATCHES)
+		{
+			if ( (condition==STARTS_WITH && part==START) ||
+			     (condition==ENDS_WITH   && part==END)   ||
+				  condition==CONTAINS    || part==WHOLE )
+			{
+				S32 start = findPattern(text,mHighlights[i]);
+				if (start >= 0 )
+				{
+					S32 end =  std::string(mHighlights[i]["pattern"]).length();
+					S32 len = text.length();
+					S32 newpart;
+					if (start==0)
+					{
+						start_llsd[0]["text"] =text.substr(0,end);
+						start_llsd[0]["color"]=mHighlights[i]["color"];
+						
+						if (end < len)
+						{
+							if (part==END   || part==WHOLE) newpart=END; else newpart=MIDDLE;
+							end_llsd=parsePartialLineHighlights(text.substr( end ),color,newpart,i);
+						}
+					}
+					else
+					{
+						if (part==START || part==WHOLE) newpart=START; else newpart=MIDDLE;
+
+						start_llsd=parsePartialLineHighlights(text.substr(0,start),color,newpart,i+1);
+						
+						if (end < len)
+						{
+							middle_llsd[0]["text"] =text.substr(start,end);
+							middle_llsd[0]["color"]=mHighlights[i]["color"];
+						
+							if (part==END   || part==WHOLE) newpart=END; else newpart=MIDDLE;
+
+							end_llsd=parsePartialLineHighlights(text.substr( (start+end) ),color,newpart,i);
+						}
+						else
+						{
+							end_llsd[0]["text"] =text.substr(start,end);
+							end_llsd[0]["color"]=mHighlights[i]["color"];
+						}
+					}
+						
+					S32 retcount=0;
+					
+					//FIXME These loops should be wrapped into a subroutine.
+					for (LLSD::array_iterator iter = start_llsd.beginArray();
+						 iter != start_llsd.endArray();++iter)
+					{
+						LLSD highlight = *iter;
+						ret_llsd[retcount++]=highlight;
+					}
+						   
+					for (LLSD::array_iterator iter = middle_llsd.beginArray();
+						 iter != middle_llsd.endArray();++iter)
+					{
+						LLSD highlight = *iter;
+						ret_llsd[retcount++]=highlight;
+					}
+						   
+					for (LLSD::array_iterator iter = end_llsd.beginArray();
+						 iter != end_llsd.endArray();++iter)
+					{
+						LLSD highlight = *iter;
+						ret_llsd[retcount++]=highlight;
+					}
+						   
+					return ret_llsd;
+				}
+			}
+		}
+	}
+	
+	//No patterns found.  Just send back what was passed in.
+	ret_llsd[0]["text"] =text;
+	LLSD color_sd = color.getValue();
+	ret_llsd[0]["color"]=color_sd;
+	return ret_llsd;
+}
+
+bool LLTextParser::parseFullLineHighlights(const std::string &text, LLColor4 *color)
+{
+	for (S32 i=0;i<mHighlights.size();i++)
+	{
+		if ((S32)mHighlights[i]["highlight"]==ALL || (S32)mHighlights[i]["condition"]==MATCHES)
+		{
+			if (findPattern(text,mHighlights[i]) >= 0 )
+			{
+				LLSD color_llsd = mHighlights[i]["color"];
+				color->setValue(color_llsd);
+				return TRUE;
+			}
+		}
+	}
+	return FALSE;	//No matches found.
+}
+
+std::string LLTextParser::getFileName()
+{
+	std::string path=gDirUtilp->getExpandedFilename(LL_PATH_PER_SL_ACCOUNT, "");
+	
+	if (!path.empty())
+	{
+		path = gDirUtilp->getExpandedFilename(LL_PATH_PER_SL_ACCOUNT, "highlights.xml");
+	}
+	return path;  
+}
+
+LLSD LLTextParser::loadFromDisk()
+{
+	std::string filename=getFileName();
+	if (filename.empty())
+	{
+		llwarns << "LLTextParser::loadFromDisk() no valid user directory." << llendl; 
+	}
+	else
+	{
+		llifstream file;
+		file.open(filename.c_str());
+		if (file.is_open())
+		{
+			LLSDSerialize::fromXML(mHighlights, file);
+		}
+		file.close();
+	}
+
+	return mHighlights;
+}
+
+bool LLTextParser::saveToDisk(LLSD highlights)
+{
+	mHighlights=highlights;
+	std::string filename=getFileName();
+	if (filename.empty())
+	{
+		llwarns << "LLTextParser::saveToDisk() no valid user directory." << llendl; 
+		return FALSE;
+	}	
+	llofstream file;
+	file.open(filename.c_str());
+	LLSDSerialize::toPrettyXML(mHighlights, file);
+	file.close();
+	return TRUE;
+}