/indra/llui/lltextparser.cpp
C++ | 239 lines | 178 code | 31 blank | 30 comment | 40 complexity | 256137d4e7c61f416b97688fa6fadfe1 MD5 | raw file
Possible License(s): LGPL-2.1
- /**
- * @file lltextparser.cpp
- *
- * $LicenseInfo:firstyear=2001&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2010, Linden Research, Inc.
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
- * $/LicenseInfo$
- */
- #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"
- //
- // Member Functions
- //
- LLTextParser::LLTextParser()
- : mLoaded(false)
- {}
- 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, EHighlightPosition part, S32 index)
- {
- loadKeywords();
- //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();
- EHighlightPosition 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)
- {
- loadKeywords();
- 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;
- }
- void LLTextParser::loadKeywords()
- {
- if (mLoaded)
- {// keywords already loaded
- return;
- }
- std::string filename=getFileName();
- if (!filename.empty())
- {
- llifstream file;
- file.open(filename.c_str());
- if (file.is_open())
- {
- LLSDSerialize::fromXML(mHighlights, file);
- }
- file.close();
- mLoaded = true;
- }
- }
- 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;
- }