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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set et sw=2 ts=2: */
/***************************************************************************
* highlight.cc
*
* Tue Mar 29 09:12:06 CEST 2011
* Copyright 2011 Bent Bisballe Nyeng
* deva@aasimon.org
****************************************************************************/
/*
* This file is part of Pracro.
*
* Pracro is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* Pracro 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Pracro; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include "highlight.h"
#include <QXmlStreamWriter>
typedef enum {
none,
intag,
instring,
inname,
inattribute
} xml_state_t;
static bool isChar(QChar c)
{
return
(c >= 'a' && c <= 'z') ||
(c >= 'A' && c <= 'Z') ||
c == '_';
}
static QString highlight_xml(QString code)
{
QString out;
xml_state_t state = none;
bool hasname = false;
QString::iterator c = code.begin();
while(c != code.end()) {
if(*c == '<') {
out += "<span class=\"brackets\"><</span>";
state = intag;
hasname = false;
} else if(state == intag && *c == '>') {
out += "<span class=\"brackets\">></span>";
state = none;
} else if(state == intag && *c == '/') {
out += "<span class=\"brackets\">/</span>";
} else if(state == intag && hasname == false && isChar(*c)) {
state = inname;
hasname = true;
out += "<span class=\"tag\">" + QString(*c);
} else if(state == inname && isChar(*c)) {
out += *c;
} else if(state == inname) {
out += "</span>" + QString(*c);
state = intag;
} else if(state == intag && hasname == true && isChar(*c)) {
state = inattribute;
out += "<span class=\"attribute\">" + QString(*c);
} else if(state == inattribute && isChar(*c)) {
out += *c;
} else if(state == inattribute) {
out += "</span>" + QString(*c);
state = intag;
} else if(state == intag && *c == '\"') {
state = instring;
out += "<span class=\"string\">"";
} else if(state == instring && *c == '\"') {
state = intag;
out += ""</span>";
} else if(state == instring) {
out += *c;
} else out += *c;
c++;
}
/*
QXmlStreamWriter w(&e->code);
w.writeCharacters(line + "\n");
*/
return out;
}
static bool isLuaChar(QChar c)
{
return
(c >= 'a' && c <= 'z') ||
(c >= 'A' && c <= 'Z') ||
c == '_';
}
static bool isKeyword(QString code)
{
return code == "if" ||
code == "then" ||
code == "else" ||
code == "end" ||
code == "this" ||
code == "function" ||
code == "local" ||
code == "and" ||
code == "or" ||
code == "not";
}
static QString highlight_lua(QString code)
{
QString out;
QString word;
bool instring = false;
QString::iterator c = code.begin();
while(c != code.end()) {
if(isLuaChar(*c)) {
word += *c;
} else {
if(instring && *c == '\'') {
out += word + "'</span>";
instring = false;
} else if(instring) {
out += word + QString(*c);
} else if(isKeyword(word)) {
out += "<span class=\"keyword\">"+word+"</span>" + QString(*c);
} else if(*c == '(') {
out += "<span class=\"function\">"+word+"</span>" + QString(*c);
} else if(instring == false && *c == '\'') {
out += word + "<span class=\"string\">'";
instring = true;
} else {
out += word + QString(*c);
}
word = "";
}
c++;
}
return out;
}
QString highlight(QString code, lang_t lang)
{
switch(lang) {
case lua:
return highlight_lua(code);
case xml:
return highlight_xml(code);
}
}
|
