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Initial commit: ReclassX structured binary editor
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187
third_party/qscintilla/scintilla/lexers/LexProps.cpp
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187
third_party/qscintilla/scintilla/lexers/LexProps.cpp
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// Scintilla source code edit control
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/** @file LexProps.cxx
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** Lexer for properties files.
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**/
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// Copyright 1998-2001 by Neil Hodgson <neilh@scintilla.org>
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// The License.txt file describes the conditions under which this software may be distributed.
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include <assert.h>
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#include <ctype.h>
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#include "ILexer.h"
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#include "Scintilla.h"
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#include "SciLexer.h"
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#include "WordList.h"
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#include "LexAccessor.h"
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#include "Accessor.h"
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#include "StyleContext.h"
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#include "CharacterSet.h"
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#include "LexerModule.h"
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using namespace Scintilla;
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static inline bool AtEOL(Accessor &styler, Sci_PositionU i) {
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return (styler[i] == '\n') ||
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((styler[i] == '\r') && (styler.SafeGetCharAt(i + 1) != '\n'));
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}
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static inline bool isassignchar(unsigned char ch) {
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return (ch == '=') || (ch == ':');
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}
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static void ColourisePropsLine(
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const char *lineBuffer,
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Sci_PositionU lengthLine,
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Sci_PositionU startLine,
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Sci_PositionU endPos,
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Accessor &styler,
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bool allowInitialSpaces) {
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Sci_PositionU i = 0;
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if (allowInitialSpaces) {
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while ((i < lengthLine) && isspacechar(lineBuffer[i])) // Skip initial spaces
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i++;
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} else {
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if (isspacechar(lineBuffer[i])) // don't allow initial spaces
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i = lengthLine;
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}
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if (i < lengthLine) {
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if (lineBuffer[i] == '#' || lineBuffer[i] == '!' || lineBuffer[i] == ';') {
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styler.ColourTo(endPos, SCE_PROPS_COMMENT);
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} else if (lineBuffer[i] == '[') {
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styler.ColourTo(endPos, SCE_PROPS_SECTION);
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} else if (lineBuffer[i] == '@') {
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styler.ColourTo(startLine + i, SCE_PROPS_DEFVAL);
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if (isassignchar(lineBuffer[i++]))
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styler.ColourTo(startLine + i, SCE_PROPS_ASSIGNMENT);
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styler.ColourTo(endPos, SCE_PROPS_DEFAULT);
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} else {
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// Search for the '=' character
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while ((i < lengthLine) && !isassignchar(lineBuffer[i]))
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i++;
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if ((i < lengthLine) && isassignchar(lineBuffer[i])) {
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styler.ColourTo(startLine + i - 1, SCE_PROPS_KEY);
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styler.ColourTo(startLine + i, SCE_PROPS_ASSIGNMENT);
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styler.ColourTo(endPos, SCE_PROPS_DEFAULT);
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} else {
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styler.ColourTo(endPos, SCE_PROPS_DEFAULT);
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}
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}
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} else {
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styler.ColourTo(endPos, SCE_PROPS_DEFAULT);
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}
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}
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static void ColourisePropsDoc(Sci_PositionU startPos, Sci_Position length, int, WordList *[], Accessor &styler) {
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char lineBuffer[1024];
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styler.StartAt(startPos);
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styler.StartSegment(startPos);
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Sci_PositionU linePos = 0;
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Sci_PositionU startLine = startPos;
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// property lexer.props.allow.initial.spaces
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// For properties files, set to 0 to style all lines that start with whitespace in the default style.
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// This is not suitable for SciTE .properties files which use indentation for flow control but
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// can be used for RFC2822 text where indentation is used for continuation lines.
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const bool allowInitialSpaces = styler.GetPropertyInt("lexer.props.allow.initial.spaces", 1) != 0;
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for (Sci_PositionU i = startPos; i < startPos + length; i++) {
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lineBuffer[linePos++] = styler[i];
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if (AtEOL(styler, i) || (linePos >= sizeof(lineBuffer) - 1)) {
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// End of line (or of line buffer) met, colourise it
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lineBuffer[linePos] = '\0';
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ColourisePropsLine(lineBuffer, linePos, startLine, i, styler, allowInitialSpaces);
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linePos = 0;
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startLine = i + 1;
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}
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}
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if (linePos > 0) { // Last line does not have ending characters
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ColourisePropsLine(lineBuffer, linePos, startLine, startPos + length - 1, styler, allowInitialSpaces);
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}
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}
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// adaption by ksc, using the "} else {" trick of 1.53
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// 030721
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static void FoldPropsDoc(Sci_PositionU startPos, Sci_Position length, int, WordList *[], Accessor &styler) {
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const bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
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const Sci_PositionU endPos = startPos + length;
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int visibleChars = 0;
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Sci_Position lineCurrent = styler.GetLine(startPos);
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char chNext = styler[startPos];
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int styleNext = styler.StyleAt(startPos);
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bool headerPoint = false;
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int lev;
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for (Sci_PositionU i = startPos; i < endPos; i++) {
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const char ch = chNext;
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chNext = styler[i+1];
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const int style = styleNext;
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styleNext = styler.StyleAt(i + 1);
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const bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');
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if (style == SCE_PROPS_SECTION) {
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headerPoint = true;
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}
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if (atEOL) {
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lev = SC_FOLDLEVELBASE;
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if (lineCurrent > 0) {
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const int levelPrevious = styler.LevelAt(lineCurrent - 1);
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if (levelPrevious & SC_FOLDLEVELHEADERFLAG) {
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lev = SC_FOLDLEVELBASE + 1;
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} else {
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lev = levelPrevious & SC_FOLDLEVELNUMBERMASK;
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}
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}
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if (headerPoint) {
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lev = SC_FOLDLEVELBASE;
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}
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if (visibleChars == 0 && foldCompact)
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lev |= SC_FOLDLEVELWHITEFLAG;
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if (headerPoint) {
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lev |= SC_FOLDLEVELHEADERFLAG;
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}
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if (lev != styler.LevelAt(lineCurrent)) {
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styler.SetLevel(lineCurrent, lev);
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}
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lineCurrent++;
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visibleChars = 0;
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headerPoint = false;
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}
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if (!isspacechar(ch))
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visibleChars++;
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}
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if (lineCurrent > 0) {
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const int levelPrevious = styler.LevelAt(lineCurrent - 1);
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if (levelPrevious & SC_FOLDLEVELHEADERFLAG) {
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lev = SC_FOLDLEVELBASE + 1;
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} else {
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lev = levelPrevious & SC_FOLDLEVELNUMBERMASK;
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}
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} else {
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lev = SC_FOLDLEVELBASE;
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}
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int flagsNext = styler.LevelAt(lineCurrent);
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styler.SetLevel(lineCurrent, lev | (flagsNext & ~SC_FOLDLEVELNUMBERMASK));
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}
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static const char *const emptyWordListDesc[] = {
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0
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};
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LexerModule lmProps(SCLEX_PROPERTIES, ColourisePropsDoc, "props", FoldPropsDoc, emptyWordListDesc);
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