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MySQL_Editor.cpp
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MySQL_Editor.cpp
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/****************************************************************************
**
** Copyright (C) 2016 Ken Crossen, bugs corrected, code cleaned up
**
** "Redistribution and use in source and binary forms, with or without
** modification, are permitted provided that the following conditions are
** met:
** * Redistributions of source code must retain the above copyright
** notice, this list of conditions and the following disclaimer.
** * Redistributions in binary form must reproduce the above copyright
** notice, this list of conditions and the following disclaimer in
** the documentation and/or other materials provided with the
** distribution.
** * Redistributions in source code or binary form may not be sold.
**
****************************************************************************/
#include "MySQL_Editor.h"
#include <QApplication>
#include <QtGui>
MySQL_Editor_Highlighter::MySQL_Editor_Highlighter ( QTextDocument *parent ) :
QSyntaxHighlighter ( parent ),
m_markCaseSensitivity(Qt::CaseInsensitive) {
// Default color scheme, similar to Qt Creator's default
m_colors[MySQL_Editor::Normal] = QColor(0, 0, 0);
m_colors[MySQL_Editor::Comment] = QColor(128, 128, 128);
m_colors[MySQL_Editor::Operator] = QColor(0, 0, 0);
m_colors[MySQL_Editor::Number] = QColor(64, 0, 0);
m_colors[MySQL_Editor::String] = QColor(0, 160, 0);
m_colors[MySQL_Editor::Keyword] = QColor(160, 0, 96);
m_colors[MySQL_Editor::Function] = QColor(96, 0, 160);
m_colors[MySQL_Editor::Interval] = QColor(160, 0, 160);
m_colors[MySQL_Editor::Type] = QColor(0, 96, 96);
m_colors[MySQL_Editor::Identifier] = QColor(0, 32, 192);
m_colors[MySQL_Editor::Marker] = QColor(255, 255, 0);
}
void
MySQL_Editor_Highlighter::setHighlightMySQLEditor ( MySQL_Editor *highlight_mysql_editor ) {
Highlight_MySQL_Editor = highlight_mysql_editor;
}
void
MySQL_Editor_Highlighter::setColor ( MySQL_Editor::ColorComponent component,
const QColor &color ) {
m_colors[component] = color;
rehighlight();
}
void
MySQL_Editor_Highlighter::highlightBlock ( const QString &text ) {
// parsing state
enum {
Start = 0,
Number = 1,
Identifier = 2,
Backticked_Identifier = 3,
String = 4,
Comment = 5,
To_EOL_Comment = 6
};
QList<int> bracketPositions;
int blockState = previousBlockState();
int bracketLevel = blockState >> 4;
int state = blockState & 15;
if (blockState < 0) {
bracketLevel = 0;
state = Start;
}
int start = 0;
int i = 0;
while (i <= text.length()) {
QChar ch = (i < text.length()) ? text.at(i) : QChar();
QChar next_ch = ((i + 1) < text.length()) ? text.at(i + 1) : QChar();
switch (state) {
case Start:
start = i;
if (ch.isSpace()) {
++i;
} else if (ch.isDigit()) {
++i;
state = Number;
} else if (((ch == '+') or (ch == '-')) and next_ch.isDigit()) {
++i;
++i;
state = Number;
} else if (ch.isLetter() or (ch == '_') or (ch == '$')) {
++i;
state = Identifier;
} else if (((ch == '.') or (ch == '@')) and
// Table's .column, database's .table, or local variable
((next_ch.isLetter() or (next_ch == '_') or (next_ch == '$')))) {
++i;
++i;
state = Identifier;
} else if (ch == '`') {
++i;
state = Backticked_Identifier;
} else if ((ch == '\'') or (ch == '\"')) {
++i;
state = String;
} else if ((ch == '/') and (next_ch == '*')) {
++i;
++i;
state = Comment;
} else if (ch == '#') {
++i;
state = To_EOL_Comment;
} else if ((ch == '-') and (next_ch == '-')) {
++i;
++i;
state = To_EOL_Comment;
} else if ((ch == '/') and (next_ch == '/')) {
i = text.length();
setFormat(start, text.length(), m_colors[MySQL_Editor::Comment]);
} else {
if (not QString("(){}[]").contains(ch))
setFormat(start, 1, m_colors[MySQL_Editor::Operator]);
if ((ch == Open_Fold_Bracket) or (ch == Close_Fold_Bracket)) {
bracketPositions += i;
if (ch == Open_Fold_Bracket)
bracketLevel++;
else
bracketLevel--;
}
++i;
state = Start;
}
break;
case Number:
if (ch.isSpace() or
(not (ch.isDigit() or (ch == '.') or
(ch == '+') or (ch == '-') or
(ch == 'E') or (ch == 'e')))) {
setFormat(start, i - start, m_colors[MySQL_Editor::Number]);
state = Start;
} else {
++i;
}
break;
// For example:
// SELECT DISTINCT `count` AS select_count
// FROM `select`
// WHERE (select.count > 1);
// In this example, both `select` and `count` would be keywords except ...
// ... when backticked or (mutually) 'qualified' as in select.count.
case Identifier:
if (ch.isSpace() or
(not (ch.isLetter() or ch.isDigit() or (ch == '_') or (ch == '$')))) {
// If (ch == '.'), it's an identifier
QString token = text.mid(start, i - start).trimmed();
if (token.startsWith('.') or (ch == '.'))
setFormat(start, i - start, m_colors[MySQL_Editor::Identifier]);
else if (Highlight_MySQL_Editor->isKeyword(token.toUpper()))
setFormat(start, i - start, m_colors[MySQL_Editor::Keyword]);
else if (Highlight_MySQL_Editor->isFunction(token.toUpper()))
setFormat(start, i - start, m_colors[MySQL_Editor::Function]);
else if (Highlight_MySQL_Editor->isType(token.toUpper()))
setFormat(start, i - start, m_colors[MySQL_Editor::Type]);
else if (Highlight_MySQL_Editor->isInterval(token.toUpper()))
setFormat(start, i - start, m_colors[MySQL_Editor::Interval]);
else
setFormat(start, i - start, m_colors[MySQL_Editor::Identifier]);
state = Start;
} else {
++i;
}
break;
case Backticked_Identifier:
if (ch == '`') {
++i; // Closing backtick is part of identifier, incorporate it
setFormat(start, i - start, m_colors[MySQL_Editor::Identifier]);
state = Start;
} else {
++i;
}
break;
case String:
if ((ch == '\\') and
((next_ch == '\\') or (next_ch == '\'') or (next_ch == '\"') or
(next_ch == 'b') or (next_ch == 'r') or (next_ch == 'f') or
(next_ch == 't') or (next_ch == 'v'))) {
// Accept all valid escapes as part of string
++i;
++i;
}
else if (ch == text.at(start)) {
QChar prev_prev = (i > 1) ? text.at(i - 2) : QChar();
QChar prev = (i > 0) ? text.at(i - 1) : QChar();
if ((not (prev == '\\')) or ((prev_prev == '\\') and (prev == '\\'))) {
++i;
setFormat(start, i - start, m_colors[MySQL_Editor::String]);
state = Start;
}
else {
// If (ch == '\\') and we are here, there's an error.
// For example, an invalid escape sequence.
++i;
}
} else {
// If (ch == '\\') and we are here, there's an error
// For example, an invalid escape sequence.
++i;
}
break;
case Comment:
if ((ch == '*') and (next_ch == '/')) {
++i; // "*/" part of comment ...
++i; // ... incorporate
setFormat(start, i - start, m_colors[MySQL_Editor::Comment]);
state = Start;
} else {
++i;
}
break;
case To_EOL_Comment:
// (ch == '\0') == true, apparently
if ((ch == '\n') or (ch == '\0')) {
setFormat(start, i - start, m_colors[MySQL_Editor::Comment]);
state = Start;
} else {
++i;
}
break;
default:
state = Start;
break;
}
}
if (state == Comment)
setFormat(start, text.length(), m_colors[MySQL_Editor::Comment]);
else
state = Start;
if (!m_markString.isEmpty()) {
int pos = 0;
int len = m_markString.length();
QTextCharFormat markerFormat;
markerFormat.setBackground(m_colors[MySQL_Editor::Marker]);
markerFormat.setForeground(m_colors[MySQL_Editor::Normal]);
for (;;) {
pos = text.indexOf(m_markString, pos, m_markCaseSensitivity);
if (pos < 0)
break;
setFormat(pos, len, markerFormat);
++pos;
}
}
if (!bracketPositions.isEmpty()) {
MySQLBlockData *blockData = reinterpret_cast<MySQLBlockData*>(currentBlock().userData());
if (!blockData) {
blockData = new MySQLBlockData;
currentBlock().setUserData(blockData);
}
blockData->bracketPositions = bracketPositions;
}
blockState = (state & 15) | (bracketLevel << 4);
setCurrentBlockState(blockState);
}
void
MySQL_Editor_Highlighter::mark ( const QString &str,
Qt::CaseSensitivity caseSensitivity ) {
m_markString = str;
m_markCaseSensitivity = caseSensitivity;
rehighlight();
}
MySQL_Editor_Sidebar::MySQL_Editor_Sidebar ( MySQL_Editor *editor ) : QWidget ( editor ),
foldIndicatorWidth ( 0 ) {
backgroundColor = QColor(200, 200, 200);
lineNumberColor = Qt::black;
indicatorColor = Qt::white;
foldIndicatorColor = Qt::lightGray;
}
void
MySQL_Editor_Sidebar::mousePressEvent ( QMouseEvent *event ) {
if (foldIndicatorWidth > 0) {
int xofs = width() - foldIndicatorWidth;
int lineNo = -1;
int fh = fontMetrics().lineSpacing();
int ys = event->pos().y();
if (event->pos().x() > xofs) {
foreach (BlockInfo ln, lineNumbers)
if (ln.position < ys && (ln.position + fh) > ys) {
if (ln.foldable)
lineNo = ln.number;
break;
}
}
if (lineNo >= 0) {
MySQL_Editor *editor = qobject_cast<MySQL_Editor*>(parent());
if (editor)
editor->toggleFold(lineNo);
}
}
}
void
MySQL_Editor_Sidebar::paintEvent ( QPaintEvent *event ) {
QPainter p(this);
p.fillRect(event->rect(), backgroundColor);
p.setPen(lineNumberColor);
p.setFont(font);
int fh = QFontMetrics(font).height();
foreach (BlockInfo ln, lineNumbers)
p.drawText(0, ln.position, width() - 4 - foldIndicatorWidth, fh, Qt::AlignRight, QString::number(ln.number));
if (foldIndicatorWidth > 0) {
int xofs = width() - foldIndicatorWidth;
p.fillRect(xofs, 0, foldIndicatorWidth, height(), indicatorColor);
// initialize (or recreate) the arrow icons whenever necessary
if (foldIndicatorWidth != rightArrowIcon.width()) {
QPainter iconPainter;
QPolygonF polygon;
int dim = foldIndicatorWidth;
rightArrowIcon = QPixmap(dim, dim);
rightArrowIcon.fill(Qt::transparent);
downArrowIcon = rightArrowIcon;
polygon << QPointF(dim * 0.4, dim * 0.25);
polygon << QPointF(dim * 0.4, dim * 0.75);
polygon << QPointF(dim * 0.8, dim * 0.5);
iconPainter.begin(&rightArrowIcon);
iconPainter.setRenderHint(QPainter::Antialiasing);
iconPainter.setPen(Qt::NoPen);
iconPainter.setBrush(foldIndicatorColor);
iconPainter.drawPolygon(polygon);
iconPainter.end();
polygon.clear();
polygon << QPointF(dim * 0.25, dim * 0.4);
polygon << QPointF(dim * 0.75, dim * 0.4);
polygon << QPointF(dim * 0.5, dim * 0.8);
iconPainter.begin(&downArrowIcon);
iconPainter.setRenderHint(QPainter::Antialiasing);
iconPainter.setPen(Qt::NoPen);
iconPainter.setBrush(foldIndicatorColor);
iconPainter.drawPolygon(polygon);
iconPainter.end();
}
foreach (BlockInfo ln, lineNumbers)
if (ln.foldable) {
if (ln.folded)
p.drawPixmap(xofs, ln.position, rightArrowIcon);
else
p.drawPixmap(xofs, ln.position, downArrowIcon);
}
}
}
MySQL_Editor_DocLayout::MySQL_Editor_DocLayout ( QTextDocument *doc ) : QPlainTextDocumentLayout ( doc ) {
}
void
MySQL_Editor_DocLayout::forceUpdate ( ) {
emit documentSizeChanged(documentSize());
}
MySQL_Editor::MySQL_Editor ( QWidget *parent ) : QPlainTextEdit( parent ) {
Editor_Layout = new MySQL_Editor_DocLayout(document());
Editor_Highlighter = new MySQL_Editor_Highlighter(document());
// Highlighter can tokenize SQL, but can't distinguish ...
// ... keywords, etc. from identifiers. Only one copy of these lists ...
// ... will be maintained (in the editor itself). The editor tokenizes ...
// ... SQL using a regular expression.
Editor_Highlighter->setHighlightMySQLEditor(this);
Editor_Sidebar = new MySQL_Editor_Sidebar(this);
// Default colors for these
cursorColor = QColor(255, 255, 192);
bracketMatchColor = QColor(96, 255, 96);
bracketErrorColor= QColor(255, 96, 96);
MySQL_Keywords.clear();
MySQL_Keywords << "ACCESS" << "ADD" << "ALL" << "ALTER" << "ANALYZE";
MySQL_Keywords << "AND" << "AS" << "ASC" << "AUTO_INCREMENT" << "BDB";
MySQL_Keywords << "BERKELEYDB" << "BETWEEN" << "BOTH" << "BY" << "CASCADE";
MySQL_Keywords << "CASE" << "CHANGE" << "CHARSET" << "COLUMN" << "COLUMNS";
MySQL_Keywords << "CONSTRAINT" << "CREATE" << "CROSS" << "CURRENT_DATE" << "CURRENT_TIME";
MySQL_Keywords << "CURRENT_TIMESTAMP" << "DATABASE" << "DATABASES" << "DAY_HOUR" << "DAY_MINUTE";
MySQL_Keywords << "DAY_SECOND" << "DEC" << "DEFAULT" << "DELAYED" << "DELETE";
MySQL_Keywords << "DESC" << "DESCRIBE" << "DISTINCT" << "DISTINCTROW" << "DROP";
MySQL_Keywords << "ELSE" << "ENCLOSED" << "ESCAPED" << "EXISTS" << "EXPLAIN";
MySQL_Keywords << "FIELDS" << "FOR" << "FOREIGN" << "FROM" << "FULL" << "FULLTEXT";
MySQL_Keywords << "FUNCTION" << "GRANT" << "GROUP" << "HAVING" << "HIGH_PRIORITY";
MySQL_Keywords << "IF" << "IGNORE" << "IN" << "INDEX" << "INFILE";
MySQL_Keywords << "INNER" << "INNODB" << "INSERT" << "INTERVAL" << "INTO" << "IS";
MySQL_Keywords << "JOIN" << "KEY" << "KEYS" << "KILL" << "LEADING";
MySQL_Keywords << "LEFT" << "LIKE" << "LIMIT" << "LINES" << "LOAD";
MySQL_Keywords << "LOCK" << "LOW_PRIORITY" << "MASTER_SERVER_ID" << "MATCH" << "MRG_MYISAM";
MySQL_Keywords << "NATIONAL" << "NATURAL" << "NOT" << "NULL" << "NUMERIC";
MySQL_Keywords << "ON" << "OPTIMIZE" << "OPTION" << "OPTIONALLY" << "OR";
MySQL_Keywords << "ORDER" << "OUTER" << "OUTFILE" << "PARTIAL" << "PRECISION";
MySQL_Keywords << "PRIMARY" << "PRIVILEGES" << "PROCEDURE" << "PURGE" << "READ";
MySQL_Keywords << "REFERENCES" << "REGEXP" << "RENAME" << "REPLACE" << "REQUIRE";
MySQL_Keywords << "RESTRICT" << "RETURNS" << "REVOKE" << "RIGHT" << "RLIKE";
MySQL_Keywords << "SELECT" << "SET" << "SHOW" << "SONAME" << "SQL_BIG_RESULT";
MySQL_Keywords << "SQL_CALC_FOUND_ROWS" << "SQL_SMALL_RESULT" << "SSL";
MySQL_Keywords << "STARTING" << "STATUS" << "STRAIGHT_JOIN";
MySQL_Keywords << "STRIPED" << "TABLE" << "TABLES" << "TERMINATED" << "THEN";
MySQL_Keywords << "TO" << "TRAILING" << "TRUNCATE" << "TYPE" << "UNION";
MySQL_Keywords << "UNIQUE" << "UNLOCK" << "UNSIGNED" << "UPDATE" << "USAGE";
MySQL_Keywords << "USE" << "USER_RESOURCES" << "USING" << "VALUES" << "VARYING";
MySQL_Keywords << "WHEN" << "WHERE" << "WHILE" << "WITH" << "WRITE";
MySQL_Keywords << "XOR" << "YEAR_MONTH" << "ZEROFILL";
QStringList functions;
functions << "ASCII" << "BIN" << "BIT_LENGTH" << "CHAR" << "CHARACTER_LENGTH";
functions << "CHAR_LENGTH" << "CONCAT" << "CONCAT_WS" << "CONV" << "ELT";
functions << "EXPORT_SET" << "FIELD" << "FIND_IN_SET" << "HEX" << "INSERT";
functions << "INSTR" << "LCASE" << "LEFT" << "LENGTH" << "LOAD_FILE";
functions << "LOCATE" << "LOWER" << "LPAD" << "LTRIM" << "MAKE_SET";
functions << "MID" << "OCT" << "OCTET_LENGTH" << "ORD" << "POSITION";
functions << "QUOTE" << "REPEAT" << "REPLACE" << "REVERSE" << "RIGHT";
functions << "RPAD" << "RTRIM" << "SOUNDEX" << "SPACE" << "SUBSTRING";
functions << "SUBSTRING_INDEX" << "TRIM" << "UCASE" << "UPPER";
QStringList math_functions;
math_functions << "ABS" << "ACOS" << "ASIN" << "ATAN" << "ATAN2";
math_functions << "CEILING" << "COS" << "COT" << "DEGREES" << "EXP";
math_functions << "FLOOR" << "GREATEST" << "LEAST" << "LN" << "LOG";
math_functions << "LOG10" << "LOG2" << "MOD" << "PI" << "POW";
math_functions << "POWER" << "RADIANS" << "RAND" << "ROUND" << "SIGN";
math_functions << "SIN" << "SQRT" << "TAN";
QStringList date_time_functions;
date_time_functions << "ADDDATE" << "CURDATE" << "CURRENT_DATE" << "CURRENT_TIME" << "CURRENT_TIMESTAMP";
date_time_functions << "CURTIME" << "DATE_ADD" << "DATE_FORMAT" << "DATE_SUB" << "DAYNAME";
date_time_functions << "DAYOFMONTH" << "DAYOFWEEK" << "DAYOFYEAR" << "EXTRACT" << "FROM_DAYS";
date_time_functions << "FROM_UNIXTIME";
date_time_functions << "NOW" << "PERIOD_ADD" << "PERIOD_DIFF" << "QUARTER" << "SECOND";
date_time_functions << "SEC_TO_TIME" << "SUBDATE" << "SYSDATE" << "TIME_FORMAT" << "TIME_TO_SEC";
date_time_functions << "TO_DAYS" << "UNIX_TIMESTAMP" << "WEEK" << "WEEKDAY" << "YEAR";
date_time_functions << "YEARWEEK";
QStringList cast_functions;
cast_functions << "CAST" << "CONVERT";
QStringList misc_functions;
misc_functions << "AES_DECRYPT" << "AES_ENCRYPT" << "BENCHMARK" << "BIT_COUNT" << "CONNECTION_ID";
misc_functions << "DATABASE" << "DECODE" << "DES_DECRYPT" << "DES_ENCRYPT" << "ENCODE";
misc_functions << "ENCRYPT" << "FORMAT" << "FOUND_ROWS" << "GET_LOCK" << "IFNULL";
misc_functions << "INET_ATON" << "INET_NTOA" << "ISNULL";
misc_functions << "IS_FREE_LOCK" << "LAST_INSERT_ID" << "MASTER_POS_WAIT" << "MD5";
misc_functions << "PASSWORD" << "RELEASE_LOCK" << "SESSION_USER" << "SHA" << "SHA1";
misc_functions << "SYSTEM_USER" << "USER" << "VERSION";
QStringList aggregate_functions;
aggregate_functions << "AVG" << "BIT_AND" << "BIT_OR" << "BIT_XOR" << "COUNT" << "GROUP_CONCAT";
aggregate_functions << "MAX" << "MIN" << "SEPARATOR" << "STD" << "STDDEV" << "STDDEV_POP";
aggregate_functions << "STDDEV_SAMP" << "SUM" << "VAR_POP" << "VAR_SAMP" << "VARIANCE";
MySQL_Functions.clear();
MySQL_Functions << functions << math_functions << date_time_functions;
MySQL_Functions << cast_functions << misc_functions << aggregate_functions;
QStringList strings_types;
strings_types << "BINARY" << "BLOB" << "CHAR" << "CHARACTER" << "ENUM";
strings_types << "LONGBLOB" << "LONGTEXT" << "MEDIUMBLOB" << "MEDIUMTEXT" << "TEXT";
strings_types << "TINYBLOB" << "TINYTEXT" << "VARBINARY" << "VARCHAR" << "SET";
QStringList numeric_types;
numeric_types << "BIGINT" << "BIT" << "BOOL" << "BOOLEAN" << "DEC";
numeric_types << "DECIMAL" << "DOUBLE" << "FIXED" << "FLOAT" << "INT";
numeric_types << "INTEGER" << "LONG" << "MEDIUMINT" << "MIDDLEINT" << "NUMERIC";
numeric_types << "TINYINT" << "REAL" << "SERIAL" << "SMALLINT";
QStringList date_time_types;
date_time_types << "DATE" << "DATETIME" << "TIME" << "TIMESTAMP" << "YEAR";
MySQL_Types.clear();
MySQL_Types << strings_types << numeric_types << date_time_types;
QStringList date_time_intervals;
date_time_intervals << "MICROSECOND" << "MINUTE" << "HOUR" << "DAY" << "MONTH";
date_time_intervals << "SECOND_MICROSECOND" << "MINUTE_MICROSECOND" << "MINUTE_SECOND";
date_time_intervals << "HOUR_MICROSECOND" << "HOUR_SECOND" << "HOUR_MINUTE";
date_time_intervals << "DAY_MICROSECOND" << "DAY_SECOND" << "DAY_MINUTE" << "DAY_HOUR";
date_time_intervals << "YEAR_MONTH";
MySQL_Intervals.clear();
MySQL_Intervals << date_time_intervals;
All_MySQL_Keywords.clear();
All_MySQL_Keywords << MySQL_Keywords << MySQL_Functions << MySQL_Types << MySQL_Intervals;
CodeFoldingEnabled = true;
ShowLineNumbersEnabled = true;
TextWrapEnabled = true;
AutoIndentEnabled = true;
Tab_Modulus = Default_Tab_Modulus;
AutoCompleteKeywordsEnabled = false;
AutoCompleteIdentifiersEnabled = false;
In_Completion_Context = false;
AutoUppercaseKeywordsEnabled = true;
Quote_Bracket_Character = true;
Post_Select_Bracket_Enclosed_Text = true;
BracketsMatchingEnabled = true;
// Example of a different color scheme
// this->setColor(MySQL_Editor::Background, QColor(255, 255, 255));
// this->setColor(MySQL_Editor::Normal, QColor(0, 0, 0));
// this->setColor(MySQL_Editor::Comment, QColor(128, 128, 128));
// this->setColor(MySQL_Editor::Number, QColor(192, 0, 0));
// this->setColor(MySQL_Editor::String, QColor(0, 128, 0));
// this->setColor(MySQL_Editor::Operator, QColor(0, 0, 0));
// this->setColor(MySQL_Editor::Identifier, QColor(128, 0, 128));
// this->setColor(MySQL_Editor::Keyword, QColor(0, 160, 160));
// this->setColor(MySQL_Editor::Function, QColor(0, 128, 192));
// this->setColor(MySQL_Editor::Type, QColor(0, 128, 192));
// this->setColor(MySQL_Editor::Interval, QColor(0, 128, 192));
// this->setColor(MySQL_Editor::Cursor, QColor(255, 255, 192));
// this->setColor(MySQL_Editor::Marker, QColor(255, 255, 0));
// this->setColor(MySQL_Editor::BracketMatch, QColor(128, 255, 128));
// this->setColor(MySQL_Editor::BracketError, QColor(255, 128, 128));
// this->setColor(MySQL_Editor::FoldIndicator, Qt::lightGray);
document()->setDocumentLayout(Editor_Layout);
connect(this, SIGNAL(textChanged()), this, SLOT(onTextChanged()));
connect(this, SIGNAL(cursorPositionChanged()), this, SLOT(updateCursor()));
connect(this, SIGNAL(cursorPositionChanged()), this, SLOT(onCursorPositionChanged()));
connect(this, SIGNAL(blockCountChanged(int)), this, SLOT(updateSidebar()));
connect(this, SIGNAL(updateRequest(QRect, int)), this, SLOT(updateSidebar(QRect, int)));
QString doublequoted_string = "\"(?:[^\\\\\"]|\\\\.)*\"";
QString singlequoted_string = "'(?:[^\\\\']|\\\\.)*'";
QString c_style_comment = "/\\*(?:[^*]*|\\*[^/])*\\*/";
QString hash_comment = "#[^\\n]*\\n";
QString doubledash_comment = "--\\s+[^\\n]*\\n";
QString bracket_characters = QString("[") + QString(MySQL_Bracket_List) + QString("]");
MySQL_Bracket_RegEx =
QRegularExpression(doublequoted_string + "|" + singlequoted_string + "|" +
c_style_comment + "|" + hash_comment + "|" + doubledash_comment + "|" +
bracket_characters);
// QString identifier = "(?:`[^`]+`)|[A-Za-z0-9_$]+";
QString backticked_identifier = "`[^`]+`";
QString significant_punctuation = QString("[") + ",;" + QString("]");
// QString identifier_characters = "A-Za-z0-9_$";
// Note inclusion of '$', will not be present in keyword list
QString keyword_characters = "A-Za-z0-9_";
QString optional_keyword_delimiters = "[^" + keyword_characters + "]?";
// QString potential_keyword = ".?([A-Za-z_0-9]+).?";
QString potential_keyword =
optional_keyword_delimiters + "([" + keyword_characters + "]+)" + optional_keyword_delimiters;
// Some delimiters can potentially turn a keyword into a normal db object name, ...
// as for example in "SELECT * FROM database.table AS `table`".
QString sql_token_pattern =
doublequoted_string + "|" + singlequoted_string + "|" +
c_style_comment + "|" + hash_comment + "|" + doubledash_comment + "|" +
bracket_characters + "|" + significant_punctuation + "|" +
backticked_identifier + "|" + potential_keyword;
SQL_Token_Regular_Expression.setPattern(sql_token_pattern);
Newline_Word_List << "SELECT" << "UPDATE" << "SET" << "DELETE" << "INSERT" << "VALUES";
Newline_Word_List << "FROM" << "LEFT" << "RIGHT" << "INNER" << "OUTER" << "JOIN" << "ON";
Newline_Word_List << "UNION" << "WHERE" << "ORDER" << "GROUP" << "HAVING" << "LIMIT";
JOIN_Modifiers << "LEFT" << "RIGHT" << "INNER" << "OUTER";
Previous_Cursor_Line = -1;
Uppercasing_In_Process = false;
Completer = new QCompleter(this);
Completer->setModelSorting(QCompleter::CaseInsensitivelySortedModel);
Completer->setCaseSensitivity(Qt::CaseInsensitive);
Completer->setWrapAround(false);
this->setCompleter(Completer);
#if defined(Q_OS_MAC)
QFont textFont = font();
textFont.setPointSize(15);
textFont.setFamily("Courier");
setFont(textFont);
#elif defined(Q_OS_UNIX)
QFont textFont = font();
textFont.setFamily("Monospace");
setFont(textFont);
#endif
}
MySQL_Editor::~MySQL_Editor ( ) {
delete Editor_Layout;
}
QString
MySQL_Editor::Replace_Paragraph_Separator ( QString Initial_Text ) {
// 0x2029 paragraph separator
return Initial_Text.replace(QChar(0x2029), QChar('\n'));
}
void
MySQL_Editor::Set_PlainText ( QString Set_Plain_Text ) {
// Don't defeat Undo/Redo
QPlainTextEdit::selectAll();
QPlainTextEdit::insertPlainText(Set_Plain_Text);
QTextCursor txt_cursor = QPlainTextEdit::textCursor();
txt_cursor.movePosition(QTextCursor::Start);
QPlainTextEdit::setTextCursor(txt_cursor);
}
QString
MySQL_Editor::Selected_Text ( ) {
QString sel_text = QPlainTextEdit::textCursor().selectedText();
return Replace_Paragraph_Separator(sel_text);
}
QStringList
MySQL_Editor::mysqlKeywords ( ) const {
return MySQL_Keywords;
}
QStringList
MySQL_Editor::mysqlFunctions ( ) const {
return MySQL_Functions;
}
QStringList
MySQL_Editor::mysqlTypes ( ) const {
return MySQL_Types;
}
QStringList
MySQL_Editor::mysqlIntervals ( ) const {
return MySQL_Intervals;
}
bool
MySQL_Editor::isKeyword ( QString potential_keyword ) {
return MySQL_Keywords.contains(potential_keyword);
}
bool
MySQL_Editor::isFunction ( QString potential_function ) {
return MySQL_Functions.contains(potential_function);
}
bool
MySQL_Editor::isType ( QString potential_type ) {
return MySQL_Types.contains(potential_type);
}
bool
MySQL_Editor::isInterval ( QString potential_interval ) {
return MySQL_Intervals.contains(potential_interval);
}
QString
MySQL_Editor::Compute_Bracket_Text ( QString Source_Text ) {
QString bracket_list = MySQL_Bracket_List;
QString bracket_text = QString(" ").repeated(Source_Text.length());
if (MySQL_Bracket_RegEx.isValid()) {
QRegularExpressionMatchIterator regex_iterator =
MySQL_Bracket_RegEx.globalMatch(Source_Text);
if (regex_iterator.hasNext()) {
// At least one found
while (regex_iterator.hasNext()) {
QRegularExpressionMatch match = regex_iterator.next();
if ((match.capturedLength() == 1) and
bracket_list.contains(match.captured())) {
bracket_text[match.capturedStart()] = match.captured().at(0);
}
}
}
}
return bracket_text;
}
int
MySQL_Editor::Bracket_Match_Position ( int Current_Position ) {
QString target_text = this->toPlainText();
if (not (target_text.length() == Bracket_Text.length())) onTextChanged();
if (not (target_text == Bracket_Source_Text)) onTextChanged();
QString bracket_list = MySQL_Bracket_List;
if ((Current_Position < 0) or (Current_Position >= target_text.length()) or
(Current_Position >= Bracket_Text.length())) return -1;
if (not bracket_list.contains(target_text.at(Current_Position))) return -1;
// For example, may have found bracket_list character in comment or string.
if (not (Bracket_Text.at(Current_Position) == target_text.at(Current_Position))) return -1;
int match_position = Current_Position;
int paren_level = 0;
if (Bracket_Text.at(match_position) == '(') {
while (match_position < Bracket_Text.length()) {
if (Bracket_Text.at(match_position) == '(') paren_level += 1;
else if (Bracket_Text.at(match_position) == ')') paren_level -= 1;
if (paren_level == 0) break;
match_position += 1;
}
}
else if (Bracket_Text.at(match_position) == ')') {
while (match_position >= 0) {
if (Bracket_Text.at(match_position) == ')') paren_level += 1;
else if (Bracket_Text.at(match_position) == '(') paren_level -= 1;
if (paren_level == 0) break;
match_position -= 1;
}
}
else if (Bracket_Text.at(match_position) == '[') {
while (match_position < Bracket_Text.length()) {
if (Bracket_Text.at(match_position) == '[') paren_level += 1;
else if (Bracket_Text.at(match_position) == ']') paren_level -= 1;
if (paren_level == 0) break;
match_position += 1;
}
}
else if (Bracket_Text.at(match_position) == ']') {
while (match_position >= 0) {
if (Bracket_Text.at(match_position) == ']') paren_level += 1;
else if (Bracket_Text.at(match_position) == '[') paren_level -= 1;
if (paren_level == 0) break;
match_position -= 1;
}
}
if ((match_position >= 0) and (match_position < Bracket_Text.length())) {
return match_position;
}
return -1; // No match found
}
int
MySQL_Editor::Compute_Current_Paren_Indent ( QString Current_Text,
int Current_Position ) {
// Returns paren_indent in units of spaces
QString bracket_text = Compute_Bracket_Text(Current_Text);
// For example:
// WHERE ((abc LIKE "%def%") OR <Return Here>
// ... and then:
// WHERE ((abc LIKE "%def%") OR
// <cursor>
int paren_indent = 0;
// Search back for closest unmatched "(", how is it "indented"?
int paren_level = 0;
int paren_position = Current_Position;
while (paren_position >= 0) {
if (bracket_text.at(paren_position) == QChar(')')) paren_level -= 1;
else if (bracket_text.at(paren_position) == QChar('(')) {
paren_level += 1;
if (paren_level == 1) {
// Found closest unmatched "(", now find immediately preceding newline
int newline_position = paren_position;
while ((newline_position >= 0) and
(not (Current_Text.at(newline_position) == QChar('\n')))) newline_position -= 1;
// Found immediately preceding newline
if (((newline_position >= 0) and
(Current_Text.at(newline_position) == QChar('\n'))) or
// Start of text is also 'newline'
(newline_position == -1)) {
paren_indent = paren_position - newline_position;
break;
}
}
}
paren_position -= 1;
}
return paren_indent;
}
void
MySQL_Editor::keyPressEvent ( QKeyEvent* event ) {
static QString part_of_word("abcdefghijklmnopqrstuvwxyz_0123456789");
static QString end_of_word("~!@#$%^&*()_+{}|:\"<>?,./;'[]\\-=");
Qt::KeyboardModifiers modifiers = QApplication::keyboardModifiers();
if ((AutoCompleteKeywordsEnabled or AutoCompleteIdentifiersEnabled) and
Completer and Completer->popup()->isVisible()) {
// The following keys are forwarded by QCompleter to the widget
switch (event->key()) {
case Qt::Key_Escape:
// Return to normal completion (exit context)
if (In_Completion_Context) initializeAutoComplete();
In_Completion_Context = false;
event->ignore();
return; // Let QCompleter do default behavior
case Qt::Key_Enter:
case Qt::Key_Return:
case Qt::Key_Tab:
case Qt::Key_Backtab:
event->ignore();
return; // Let QCompleter do default behavior
default:
break;
}
}
if ((AutoCompleteKeywordsEnabled or AutoCompleteIdentifiersEnabled) and Completer) {
if (Completer->popup()->isVisible() and
(event->text().isEmpty() or
end_of_word.contains(event->text().right(1).toLower()) or
(not part_of_word.contains(event->text().right(1).toLower())))) {
Completer->popup()->hide();
// A 'completion context' is entered when a context indetifier is followed by '.', ...
// for example, 'table_name.' in which case all of the column names in table_name ...
// ... are displayed in the completer popup.
// Now return to normal completion (exit context)
if (In_Completion_Context) initializeAutoComplete();
In_Completion_Context = false;
}
else if (((modifiers & Qt::ControlModifier) == Qt::NoModifier) and
((modifiers & Qt::AltModifier) == Qt::NoModifier) and
(not event->text().isEmpty()) and
part_of_word.contains(event->text().right(1).toLower())) {
QString completionPrefix = textUnderCursor() + event->text();
if (((not In_Completion_Context) and (completionPrefix.length() < 3)) or
(In_Completion_Context and (completionPrefix.length() < 1))) {
if (Completer->popup()->isVisible()) Completer->popup()->hide();
}
else {
if (not (completionPrefix == Completer->completionPrefix())) {
Completer->setCompletionPrefix(completionPrefix);
Completer->popup()->setCurrentIndex(Completer->completionModel()->index(0, 0));
}
QRect cur_rect = cursorRect();
cur_rect.setWidth(Completer->popup()->sizeHintForColumn(0) +
Completer->popup()->verticalScrollBar()->sizeHint().width());
Completer->complete(cur_rect); // popup it up!
}
}
}
if (((event->key() == Qt::Key_ParenLeft) or
(event->key() == Qt::Key_BracketLeft) or
((event->key() == Qt::Key_QuoteDbl) and Quote_Bracket_Character) or
((event->key() == Qt::Key_Apostrophe) and Quote_Bracket_Character)) and
((modifiers & Qt::ControlModifier) == Qt::NoModifier) and
(this->textCursor().selectedText().count() > 0)) {
event->accept();
// For these "bracketing" characters, if the "opening" character is typed ...
// ... when text is selected, the selected text will be enclosed by ...
// ... "open" and "close" characters.
QString left_encloser;
QString right_encloser;
if (event->key() == Qt::Key_ParenLeft) {
left_encloser = "(";
right_encloser = ")";
}
else if (event->key() == Qt::Key_BracketLeft) {
left_encloser = "[";
right_encloser = "]";
}
else if (event->key() == Qt::Key_BraceLeft) {
left_encloser = "{";
right_encloser = "}";
}
else if (event->key() == Qt::Key_QuoteDbl) {
left_encloser = "\"";
right_encloser = "\"";
}
else if (event->key() == Qt::Key_Apostrophe) {
left_encloser = "'";
right_encloser = "'";
}
QTextCursor txt_cursor = this->textCursor();
int sel_begin_pos = txt_cursor.selectionStart();
int sel_end_pos = txt_cursor.selectionEnd();
txt_cursor.insertText(left_encloser + txt_cursor.selectedText() + right_encloser);
if (Post_Select_Bracket_Enclosed_Text) {
txt_cursor.setPosition((sel_begin_pos + 1));
txt_cursor.setPosition((sel_end_pos + 1), QTextCursor::KeepAnchor);
this->setTextCursor(txt_cursor);
}
return;
}
else if ((event->key() == Qt::Key_Return) and AutoIndentEnabled) {
QTextCursor txt_cursor = QPlainTextEdit::textCursor();
QString before_cursor_text = QPlainTextEdit::toPlainText();
before_cursor_text.truncate(txt_cursor.position());
// For example:
// SELECT abc
// FROM
// (SELECT def AS abc <Return Here>
// ... and then:
// SELECT abc
// FROM
// (SELECT def AS abc
// FROM
int paren_indent = Compute_Current_Paren_Indent(before_cursor_text,
(before_cursor_text.length() - 1));
// For example:
// SELECT abc
// def <Return Here>
// ... and then:
// SELECT abc
// def
// ghi
QTextCursor current_line_txt_cursor = QPlainTextEdit::textCursor();
current_line_txt_cursor.movePosition(QTextCursor::StartOfLine, QTextCursor::KeepAnchor);
QString current_line_text_before_cursor = current_line_txt_cursor.selectedText();
int word_boundary_idx = current_line_text_before_cursor.indexOf(QRegExp("[^\\s]"));
word_boundary_idx = qMax(word_boundary_idx, paren_indent);
QString whitespace = QString(" ").repeated(word_boundary_idx);
QPlainTextEdit::insertPlainText("\n" + whitespace);
}
else if ((event->key() == Qt::Key_Tab) or (event->key() == Qt::Key_Escape)) {
QTextCursor txt_cursor = QPlainTextEdit::textCursor();
if (txt_cursor.selectedText().length() == 0) {
int cursor_position = txt_cursor.position();
txt_cursor.movePosition(QTextCursor::StartOfLine, QTextCursor::KeepAnchor);
QString line_text_before_cursor = txt_cursor.selectedText();
if (line_text_before_cursor.indexOf(QRegExp("[^\\s]")) < 0) {
// Only whitespace before cursor
int cursor_position_on_line = line_text_before_cursor.length();
QTextCursor previous_line_txt_cursor = QPlainTextEdit::textCursor();
previous_line_txt_cursor.movePosition(QTextCursor::PreviousBlock, QTextCursor::KeepAnchor);
QString previous_line_text_before_cursor = previous_line_txt_cursor.selectedText();
// Find word boundary on previous line in direction requested
int word_boundary_idx = cursor_position_on_line;
if ((event->key() == Qt::Key_Tab) and
((modifiers & Qt::AltModifier) == Qt::NoModifier)) {
// For example:
// SELECT abc
// <Tab Here>
// ... and then:
// SELECT abc
// def
word_boundary_idx =
previous_line_text_before_cursor.indexOf(QRegularExpression("(?<=\\s)[^\\s]"),
(cursor_position_on_line + 1));
}
else if ((event->key() == Qt::Key_Escape) or
((event->key() == Qt::Key_Tab) and
((modifiers & Qt::AltModifier) == Qt::AltModifier))) {
// For example:
// (SELECT abc
// def
// <BackTab/Esc Here>
// ... and then:
// (SELECT abc
// def
// FROM
word_boundary_idx =
previous_line_text_before_cursor.lastIndexOf(QRegularExpression("(?<=\\s)[^\\s]"),
(cursor_position_on_line - 1));
if (word_boundary_idx < 0) {
QString before_cursor_text = QPlainTextEdit::toPlainText();
before_cursor_text.truncate(cursor_position);
word_boundary_idx = Compute_Current_Paren_Indent(before_cursor_text,
(before_cursor_text.length() - 1));
}