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//===========================================
// Lumina-DE source code
// Copyright (c) 2015, Ken Moore
// Available under the 3-clause BSD license
// See the LICENSE file for full details
//===========================================
#include "syntaxSupport.h"
#include <QJsonArray>
#include <QJsonDocument>
#include <QFontDatabase>
#include <QFont>
#include <LUtils.h>
// ================
// SYNTAX FILE CLASS
// ================
QColor SyntaxFile::colorFromOption(QString opt, QSettings *settings){
opt = opt.simplified();
if(opt.startsWith("rgb(")){
QStringList opts = opt.section("(",1,-1).section(")",0,0).split(",");
if(opts.length()!=3){ return QColor(); }
return QColor( opts[0].simplified().toInt(), opts[1].simplified().toInt(), opts[2].simplified().toInt() );
}else if(opt.startsWith("#")){
return QColor(opt);
}else if(opt.startsWith("colors/")){
return QColor(settings->value(opt,"").toString());
}
return QColor("transparent");
}
QString SyntaxFile::name(){
if(!metaObj.contains("name")){ return ""; }
return metaObj.value("name").toString();
}
int SyntaxFile::char_limit(){
if(!formatObj.contains("columns_per_line")){ return -1; }
int num = formatObj.value("columns_per_line").toInt();
return num;
}
bool SyntaxFile::highlight_excess_whitespace(){
if(!formatObj.contains("highlight_whitespace_eol")){ return false; }
return formatObj.value("highlight_whitespace_eol").toBool();
}
int SyntaxFile::tab_length(){
int num = -1;
if(formatObj.contains("tab_width")){ num = formatObj.value("tab_width").toInt(); }
if(num<=0){ num = 8; } //UNIX Standard of 8 characters per tab
return num;
}
void SyntaxFile::SetupDocument(QPlainTextEdit* editor){
if(formatObj.contains("line_wrap")){
editor->setLineWrapMode( formatObj.value("line_wrap").toBool() ? QPlainTextEdit::WidgetWidth : QPlainTextEdit::NoWrap);
}
if(formatObj.contains("font_type")){
QString type = formatObj.value("font_type").toString();
QFont font = editor->document()->defaultFont(); // current font
if(type=="monospace"){
font = QFont("monospace");
//font = QFontDatabase::systemFont(QFontDatabase::FixedFont); //get the default fixed-size font for the system
}
font.setStyle(QFont::StyleNormal);
font.setStyleStrategy(QFont::PreferAntialias);
editor->document()->setDefaultFont(font);
}
if(formatObj.contains("tab_width")){
int num = formatObj.value("tab_width").toInt();
if(num<=0){ num = 8; } //UNIX Standard of 8 characters per tab
editor->setTabStopWidth( num * QFontMetrics(editor->document()->defaultFont()).width(" ") );
}
}
bool SyntaxFile::supportsFile(QString file){
if(metaObj.contains("file_suffix")){
return metaObj.value("file_suffix").toArray().contains( file.section("/",-1).section(".",-1) );
}
return false;
}
bool SyntaxFile::LoadFile(QString file, QSettings *settings){
QStringList contents = LUtils::readFile(file);
//Now trim the extra non-JSON off the beginning of the file
while(!contents.isEmpty()){
if(contents[0].startsWith("{")){ break; } //stop here
else{ contents.removeAt(0); }
}
//qDebug() << "Contents:" << contents.join("\n").simplified();
QJsonParseError err;
QJsonDocument doc = QJsonDocument::fromJson(contents.join("\n").simplified().toLocal8Bit(), &err );
if(doc.isNull()){ qDebug() << "JSON Syntax Error:" << err.errorString(); }
QJsonObject obj = doc.object();
if(!obj.contains("meta") || !obj.contains("format") || !obj.contains("rules")){ qDebug() << "Could not read syntax file:" << file; return false; } //could not get any info
//Save the raw meta/format objects for later
fileLoaded = file;
metaObj = obj.value("meta").toObject();
formatObj = obj.value("format").toObject();
//Now read/save the rules structure
QJsonArray rulesArray = obj.value("rules").toArray();
rules.clear();
//Create the blank/generic text format
for(int i=0; i<rulesArray.count(); i++){
QJsonObject rule = rulesArray[i].toObject();
SyntaxRule tmp;
//First load the rule
//qDebug() << "Load Rule:" << rule.keys();
if(rule.contains("words")){} //valid option - handled at the end though
else if(rule.contains("regex")){
tmp.pattern = QRegExp(rule.value("regex").toString());
}else if(rule.contains("regex_start") && rule.contains("regex_end")){
tmp.startPattern = QRegExp(rule.value("regex_start").toString());
tmp.endPattern = QRegExp(rule.value("regex_end").toString());
//qDebug() << " -- Multi-line Rule:" << tmp.startPattern << tmp.endPattern;
}else{ continue; } //bad rule - missing the actual detection logic
//Now load the appearance logic
if(rule.contains("foreground")){ tmp.format.setForeground( colorFromOption(rule.value("foreground").toString(), settings) ); }
if(rule.contains("background")){ tmp.format.setBackground( colorFromOption(rule.value("background").toString(), settings) ); }
if(rule.contains("font-weight")){
QString wgt = rule.value("font-weight").toString();
if(wgt =="bold"){ tmp.format.setFontWeight(QFont::Bold); }
if(wgt =="light"){ tmp.format.setFontWeight(QFont::Light); }
else{ tmp.format.setFontWeight(QFont::Normal); }
}
//Now save the rule(s) to the list
if(rule.contains("words")){
//special logic - this generates a bunch of rules all at once (one per word)
QJsonArray tmpArr = rule.value("words").toArray();
for(int a=0; a<tmpArr.count(); a++){
tmp.pattern = QRegExp("\\b"+tmpArr[a].toString()+"\\b"); //turn each keyword into a QRegExp and insert the rule
rules << tmp;
}
}else{ rules << tmp; } //just a single rule
}
return true;
}
//Main function for finding/loading all syntax files
QList<SyntaxFile> SyntaxFile::availableFiles(QSettings *settings){
static QList<SyntaxFile> list; //keep this list around between calls - prevent re-reading all the files
//Remove/update any files from the list as needed
QStringList found;
for(int i=0; i<list.length(); i++){
if( !QFileInfo::exists(list[i].fileLoaded) ){ list.removeAt(i); i--; continue; } //obsolete file
else if(QFileInfo(list[i].fileLoaded).lastModified() > list[i].lastLoaded){ list[i].LoadFile(list[i].fileLoaded, settings); } //out-of-date file
found << list[i].fileLoaded; //save for later
}
//Now scan for any new files
QStringList paths;
paths << QString(getenv("XDG_DATA_HOME")) << QString(getenv("XDG_DATA_DIRS")).split(":");
for(int i=0; i<paths.length(); i++){
QDir dir(paths[i]+"/lumina-desktop/syntax_rules");
if(!dir.exists()){ continue; }
//qDebug() << "Found directory:" << dir.absolutePath();
QFileInfoList files = dir.entryInfoList(QStringList() << "*.syntax", QDir::Files, QDir::Name);
for(int f=0; f<files.length(); f++){
if(paths.contains(files[f].absoluteFilePath()) ){ continue; } //already handled
//New Syntax File found
//qDebug() << "Found File:" << files[f].fileName();
SyntaxFile nfile;
if( nfile.LoadFile(files[f].absoluteFilePath(), settings) ){ list << nfile; }
}
}
return list;
}
QStringList Custom_Syntax::availableRules(QSettings *settings){
QStringList avail;
QList<SyntaxFile> files = SyntaxFile::availableFiles(settings);
for(int i=0; i<files.length(); i++){ avail << files[i].name(); }
/*avail << "C++";
//avail << "Python";
avail << "Shell";
avail << "reST";*/
return avail;
}
QStringList Custom_Syntax::knownColors(){
//Note: All these colors should be prefixed with "colors/" when accessing them from the settings file
QStringList avail;
//Standard colors
avail << "keyword" << "altkeyword" << "class" << "text" << "function" << "comment";
//Bracket/parenthesis/brace matching
avail << "bracket-found" << "bracket-missing";
return avail;
}
void Custom_Syntax::SetupDefaultColors(QSettings *settings){
if(!settings->contains("colors/keyword")){settings->setValue("colors/keyword", QColor(Qt::blue).name() ); }
if(!settings->contains("colors/altkeyword")){settings->setValue("colors/altkeyword", QColor(Qt::darkBlue).name() ); }
if(!settings->contains("colors/class")){settings->setValue("colors/class", QColor(Qt::darkRed).name() ); }
if(!settings->contains("colors/text")){settings->setValue("colors/text", QColor(Qt::darkMagenta).name() ); }
if(!settings->contains("colors/function")){settings->setValue("colors/function", QColor(Qt::darkCyan).name() ); }
if(!settings->contains("colors/comment")){settings->setValue("colors/comment", QColor(Qt::darkGreen).name() ); }
if(!settings->contains("colors/bracket-found")){settings->setValue("colors/bracket-found", QColor(Qt::green).name() ); }
if(!settings->contains("colors/bracket-missing")){settings->setValue("colors/bracket-missing", QColor(Qt::red).name() ); }
if(!settings->contains("colors/preprocessor")){settings->setValue("colors/preprocessor", QColor(Qt::darkYellow).name() ); }
}
QString Custom_Syntax::ruleForFile(QString filename, QSettings *settings){
QList<SyntaxFile> files = SyntaxFile::availableFiles(settings);
for(int i=0; i<files.length(); i++){
if(files[i].supportsFile(filename)){ return files[i].name(); }
}
/*QString suffix = filename.section(".",-1);
if(suffix=="cpp" || suffix=="hpp" || suffix=="c" || suffix=="h"){ return "C++"; }
//else if(suffix=="py" || suffix=="pyc"){ return "Python"; }
else if(suffix=="sh"){ return "Shell"; }
else if(suffix=="rst"){ return "reST"; }*/
return "";
}
void Custom_Syntax::loadRules(QString type){
QList<SyntaxFile> files = SyntaxFile::availableFiles(settings);
for(int i=0; i<files.length(); i++){
if(files[i].name() == type){ syntax = files[i]; break; }
}
return;
}
void Custom_Syntax::loadRules(SyntaxFile sfile){
syntax = sfile;
}
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