527 lines
13 KiB
C++
527 lines
13 KiB
C++
/**
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* @file llkeywords.cpp
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* @brief Keyword list for LSL
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*
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* $LicenseInfo:firstyear=2000&license=viewergpl$
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*
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* Copyright (c) 2000-2009, Linden Research, Inc.
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*
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* Second Life Viewer Source Code
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* The source code in this file ("Source Code") is provided by Linden Lab
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* to you under the terms of the GNU General Public License, version 2.0
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* ("GPL"), unless you have obtained a separate licensing agreement
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* ("Other License"), formally executed by you and Linden Lab. Terms of
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* the GPL can be found in doc/GPL-license.txt in this distribution, or
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* online at http://secondlifegrid.net/programs/open_source/licensing/gplv2
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*
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* There are special exceptions to the terms and conditions of the GPL as
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* it is applied to this Source Code. View the full text of the exception
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* in the file doc/FLOSS-exception.txt in this software distribution, or
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* online at
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* http://secondlifegrid.net/programs/open_source/licensing/flossexception
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*
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* By copying, modifying or distributing this software, you acknowledge
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* that you have read and understood your obligations described above,
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* and agree to abide by those obligations.
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*
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* ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO
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* WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY,
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* COMPLETENESS OR PERFORMANCE.
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* $/LicenseInfo$
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*/
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#include "linden_common.h"
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#include <iostream>
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#include <fstream>
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#include "llkeywords.h"
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#include "lltexteditor.h"
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#include "llstl.h"
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#include <boost/tokenizer.hpp>
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const U32 KEYWORD_FILE_CURRENT_VERSION = 2;
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inline BOOL LLKeywordToken::isHead(const llwchar* s) const
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{
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// strncmp is much faster than string compare
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BOOL res = TRUE;
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const llwchar* t = mToken.c_str();
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S32 len = mToken.size();
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for (S32 i=0; i<len; i++)
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{
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if (s[i] != t[i])
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{
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res = FALSE;
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break;
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}
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}
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return res;
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}
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LLKeywords::LLKeywords() : mLoaded(FALSE)
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{
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}
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LLKeywords::~LLKeywords()
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{
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std::for_each(mWordTokenMap.begin(), mWordTokenMap.end(), DeletePairedPointer());
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std::for_each(mLineTokenList.begin(), mLineTokenList.end(), DeletePointer());
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std::for_each(mDelimiterTokenList.begin(), mDelimiterTokenList.end(), DeletePointer());
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}
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BOOL LLKeywords::loadFromFile( const std::string& filename )
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{
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mLoaded = FALSE;
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////////////////////////////////////////////////////////////
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// File header
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const S32 BUFFER_SIZE = 1024;
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char buffer[BUFFER_SIZE]; /* Flawfinder: ignore */
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llifstream file;
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file.open(filename); /* Flawfinder: ignore */
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if( file.fail() )
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{
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llinfos << "LLKeywords::loadFromFile() Unable to open file: " << filename << llendl;
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return mLoaded;
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}
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// Identifying string
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file >> buffer;
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if( strcmp( buffer, "llkeywords" ) )
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{
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llinfos << filename << " does not appear to be a keyword file" << llendl;
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return mLoaded;
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}
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// Check file version
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file >> buffer;
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U32 version_num;
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file >> version_num;
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if( strcmp(buffer, "version") || version_num != (U32)KEYWORD_FILE_CURRENT_VERSION )
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{
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llinfos << filename << " does not appear to be a version " << KEYWORD_FILE_CURRENT_VERSION << " keyword file" << llendl;
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return mLoaded;
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}
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// start of line (SOL)
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std::string SOL_COMMENT("#");
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std::string SOL_WORD("[word ");
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std::string SOL_LINE("[line ");
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std::string SOL_ONE_SIDED_DELIMITER("[one_sided_delimiter ");
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std::string SOL_TWO_SIDED_DELIMITER("[two_sided_delimiter ");
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LLColor3 cur_color( 1, 0, 0 );
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LLKeywordToken::TOKEN_TYPE cur_type = LLKeywordToken::WORD;
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while (!file.eof())
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{
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buffer[0] = 0;
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file.getline( buffer, BUFFER_SIZE );
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std::string line(buffer);
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if( line.find(SOL_COMMENT) == 0 )
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{
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continue;
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}
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else if( line.find(SOL_WORD) == 0 )
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{
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cur_color = readColor( line.substr(SOL_WORD.size()) );
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cur_type = LLKeywordToken::WORD;
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continue;
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}
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else if( line.find(SOL_LINE) == 0 )
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{
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cur_color = readColor( line.substr(SOL_LINE.size()) );
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cur_type = LLKeywordToken::LINE;
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continue;
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}
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else if( line.find(SOL_TWO_SIDED_DELIMITER) == 0 )
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{
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cur_color = readColor( line.substr(SOL_TWO_SIDED_DELIMITER.size()) );
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cur_type = LLKeywordToken::TWO_SIDED_DELIMITER;
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continue;
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}
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else if( line.find(SOL_ONE_SIDED_DELIMITER) == 0 )
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{
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cur_color = readColor( line.substr(SOL_ONE_SIDED_DELIMITER.size()) );
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cur_type = LLKeywordToken::ONE_SIDED_DELIMITER;
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continue;
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}
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std::string token_buffer( line );
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LLStringUtil::trim(token_buffer);
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typedef boost::tokenizer<boost::char_separator<char> > tokenizer;
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boost::char_separator<char> sep_word("", " \t");
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tokenizer word_tokens(token_buffer, sep_word);
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tokenizer::iterator token_word_iter = word_tokens.begin();
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if( !token_buffer.empty() && token_word_iter != word_tokens.end() )
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{
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// first word is keyword
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std::string keyword = (*token_word_iter);
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LLStringUtil::trim(keyword);
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// following words are tooltip
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std::string tool_tip;
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while (++token_word_iter != word_tokens.end())
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{
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tool_tip += (*token_word_iter);
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}
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LLStringUtil::trim(tool_tip);
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if( !tool_tip.empty() )
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{
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// Replace : with \n for multi-line tool tips.
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LLStringUtil::replaceChar( tool_tip, ':', '\n' );
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addToken(cur_type, keyword, cur_color, tool_tip );
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}
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else
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{
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addToken(cur_type, keyword, cur_color, LLStringUtil::null );
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}
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}
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}
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file.close();
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mLoaded = TRUE;
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return mLoaded;
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}
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// Add the token as described
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void LLKeywords::addToken(LLKeywordToken::TOKEN_TYPE type,
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const std::string& key_in,
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const LLColor3& color,
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const std::string& tool_tip_in )
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{
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LLWString key = utf8str_to_wstring(key_in);
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LLWString tool_tip = utf8str_to_wstring(tool_tip_in);
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switch(type)
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{
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case LLKeywordToken::WORD:
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mWordTokenMap[key] = new LLKeywordToken(type, color, key, tool_tip);
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break;
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case LLKeywordToken::LINE:
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mLineTokenList.push_front(new LLKeywordToken(type, color, key, tool_tip));
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break;
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case LLKeywordToken::TWO_SIDED_DELIMITER:
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case LLKeywordToken::ONE_SIDED_DELIMITER:
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mDelimiterTokenList.push_front(new LLKeywordToken(type, color, key, tool_tip));
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break;
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default:
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llassert(0);
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}
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}
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LLColor3 LLKeywords::readColor( const std::string& s )
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{
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F32 r, g, b;
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r = g = b = 0.0f;
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S32 read = sscanf(s.c_str(), "%f, %f, %f]", &r, &g, &b );
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if( read != 3 ) /* Flawfinder: ignore */
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{
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llinfos << " poorly formed color in keyword file" << llendl;
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}
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return LLColor3( r, g, b );
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}
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// Walk through a string, applying the rules specified by the keyword token list and
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// create a list of color segments.
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void LLKeywords::findSegments(std::vector<LLTextSegment *>* seg_list, const LLWString& wtext, const LLColor4 &defaultColor)
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{
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std::for_each(seg_list->begin(), seg_list->end(), DeletePointer());
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seg_list->clear();
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if( wtext.empty() )
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{
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return;
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}
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S32 text_len = wtext.size();
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seg_list->push_back( new LLTextSegment( LLColor3(defaultColor), 0, text_len ) );
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const llwchar* base = wtext.c_str();
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const llwchar* cur = base;
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const llwchar* line = NULL;
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while( *cur )
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{
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if( *cur == '\n' || cur == base )
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{
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if( *cur == '\n' )
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{
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cur++;
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if( !*cur || *cur == '\n' )
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{
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continue;
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}
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}
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// Start of a new line
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line = cur;
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// Skip white space
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while( *cur && isspace(*cur) && (*cur != '\n') )
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{
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cur++;
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}
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if( !*cur || *cur == '\n' )
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{
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continue;
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}
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// cur is now at the first non-whitespace character of a new line
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// Line start tokens
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{
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BOOL line_done = FALSE;
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for (token_list_t::iterator iter = mLineTokenList.begin();
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iter != mLineTokenList.end(); ++iter)
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{
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LLKeywordToken* cur_token = *iter;
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if( cur_token->isHead( cur ) )
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{
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S32 seg_start = cur - base;
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while( *cur && *cur != '\n' )
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{
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// skip the rest of the line
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cur++;
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}
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S32 seg_end = cur - base;
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LLTextSegment* text_segment = new LLTextSegment( cur_token->getColor(), seg_start, seg_end );
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text_segment->setToken( cur_token );
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insertSegment( seg_list, text_segment, text_len, defaultColor);
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line_done = TRUE; // to break out of second loop.
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break;
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}
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}
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if( line_done )
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{
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continue;
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}
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}
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}
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// Skip white space
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while( *cur && isspace(*cur) && (*cur != '\n') )
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{
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cur++;
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}
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while( *cur && *cur != '\n' )
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{
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// Check against delimiters
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{
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S32 seg_start = 0;
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LLKeywordToken* cur_delimiter = NULL;
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for (token_list_t::iterator iter = mDelimiterTokenList.begin();
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iter != mDelimiterTokenList.end(); ++iter)
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{
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LLKeywordToken* delimiter = *iter;
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if( delimiter->isHead( cur ) )
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{
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cur_delimiter = delimiter;
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break;
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}
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}
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if( cur_delimiter )
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{
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S32 between_delimiters = 0;
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S32 seg_end = 0;
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seg_start = cur - base;
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cur += cur_delimiter->getLength();
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if( cur_delimiter->getType() == LLKeywordToken::TWO_SIDED_DELIMITER )
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{
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LLWString str = cur_delimiter->getToken();
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std::reverse(str.begin(),str.end()); //Flip the delim around (/* changes to */)
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LLKeywordToken reverse_delimiter(cur_delimiter->getType(),cur_delimiter->getColor(),str,cur_delimiter->getToolTip());
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while( *cur && !reverse_delimiter.isHead(cur))
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{
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// Check for an escape sequence.
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if (*cur == '\\')
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{
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// Count the number of backslashes.
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S32 num_backslashes = 0;
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while (*cur == '\\')
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{
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num_backslashes++;
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between_delimiters++;
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cur++;
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}
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// Is the next character the end delimiter?
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if (reverse_delimiter.isHead(cur))
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{
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// Is there was an odd number of backslashes, then this delimiter
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// does not end the sequence.
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if (num_backslashes % 2 == 1)
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{
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between_delimiters++;
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cur++;
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}
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else
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{
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// This is an end delimiter.
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break;
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}
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}
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}
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else
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{
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between_delimiters++;
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cur++;
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}
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}
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if( *cur )
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{
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cur += cur_delimiter->getLength();
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seg_end = seg_start + between_delimiters + 2 * cur_delimiter->getLength();
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}
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else
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{
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// eof
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seg_end = seg_start + between_delimiters + cur_delimiter->getLength();
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}
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}
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else
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{
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llassert( cur_delimiter->getType() == LLKeywordToken::ONE_SIDED_DELIMITER );
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// Left side is the delimiter. Right side is eol or eof.
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while( *cur && ('\n' != *cur) )
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{
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between_delimiters++;
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cur++;
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}
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seg_end = seg_start + between_delimiters + cur_delimiter->getLength();
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}
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LLTextSegment* text_segment = new LLTextSegment( cur_delimiter->getColor(), seg_start, seg_end );
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text_segment->setToken( cur_delimiter );
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insertSegment( seg_list, text_segment, text_len, defaultColor);
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// Note: we don't increment cur, since the end of one delimited seg may be immediately
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// followed by the start of another one.
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continue;
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}
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}
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// check against words
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llwchar prev = cur > base ? *(cur-1) : 0;
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if( !isalnum( prev ) && (prev != '_') )
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{
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const llwchar* p = cur;
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while( isalnum( *p ) || (*p == '_') )
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{
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p++;
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}
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S32 seg_len = p - cur;
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if( seg_len > 0 )
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{
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LLWString word( cur, 0, seg_len );
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word_token_map_t::iterator map_iter = mWordTokenMap.find(word);
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if( map_iter != mWordTokenMap.end() )
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{
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LLKeywordToken* cur_token = map_iter->second;
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S32 seg_start = cur - base;
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S32 seg_end = seg_start + seg_len;
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// llinfos << "Seg: [" << word.c_str() << "]" << llendl;
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LLTextSegment* text_segment = new LLTextSegment( cur_token->getColor(), seg_start, seg_end );
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text_segment->setToken( cur_token );
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insertSegment( seg_list, text_segment, text_len, defaultColor);
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}
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cur += seg_len;
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continue;
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}
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}
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if( *cur && *cur != '\n' )
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{
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cur++;
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}
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}
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}
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}
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void LLKeywords::insertSegment(std::vector<LLTextSegment*>* seg_list, LLTextSegment* new_segment, S32 text_len, const LLColor4 &defaultColor )
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{
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LLTextSegment* last = seg_list->back();
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S32 new_seg_end = new_segment->getEnd();
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if( new_segment->getStart() == last->getStart() )
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{
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*last = *new_segment;
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delete new_segment;
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}
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else
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{
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last->setEnd( new_segment->getStart() );
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seg_list->push_back( new_segment );
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}
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if( new_seg_end < text_len )
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{
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seg_list->push_back( new LLTextSegment( defaultColor, new_seg_end, text_len ) );
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}
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}
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#ifdef _DEBUG
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void LLKeywords::dump()
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{
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llinfos << "LLKeywords" << llendl;
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llinfos << "LLKeywords::sWordTokenMap" << llendl;
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word_token_map_t::iterator word_token_iter = mWordTokenMap.begin();
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while( word_token_iter != mWordTokenMap.end() )
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{
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LLKeywordToken* word_token = word_token_iter->second;
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word_token->dump();
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++word_token_iter;
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}
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llinfos << "LLKeywords::sLineTokenList" << llendl;
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for (token_list_t::iterator iter = mLineTokenList.begin();
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iter != mLineTokenList.end(); ++iter)
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{
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LLKeywordToken* line_token = *iter;
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line_token->dump();
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}
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llinfos << "LLKeywords::sDelimiterTokenList" << llendl;
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for (token_list_t::iterator iter = mDelimiterTokenList.begin();
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iter != mDelimiterTokenList.end(); ++iter)
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{
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LLKeywordToken* delimiter_token = *iter;
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delimiter_token->dump();
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}
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}
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void LLKeywordToken::dump()
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{
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llinfos << "[" <<
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mColor.mV[VX] << ", " <<
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mColor.mV[VY] << ", " <<
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mColor.mV[VZ] << "] [" <<
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wstring_to_utf8str(mToken) << "]" <<
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llendl;
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}
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#endif // DEBUG
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