1
// Scintilla source code edit control
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** Text document that handles notifications, DBCS, styling, words and end of line.
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// Copyright 1998-2003 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 "Scintilla.h"
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#include "SplitVector.h"
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#include "Partitioning.h"
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#include "RunStyles.h"
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#include "CellBuffer.h"
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#include "CharClassify.h"
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#include "Decoration.h"
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using namespace Scintilla;
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// This is ASCII specific but is safe with chars >= 0x80
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static inline bool isspacechar(unsigned char ch) {
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return (ch == ' ') || ((ch >= 0x09) && (ch <= 0x0d));
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static inline bool IsPunctuation(char ch) {
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return isascii(ch) && ispunct(ch);
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static inline bool IsADigit(char ch) {
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return isascii(ch) && isdigit(ch);
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static inline bool IsLowerCase(char ch) {
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return isascii(ch) && islower(ch);
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static inline bool IsUpperCase(char ch) {
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return isascii(ch) && isupper(ch);
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Document::Document() {
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eolMode = SC_EOL_CRLF;
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stylingBitsMask = 0x1F;
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enteredModification = 0;
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enteredReadOnlyCount = 0;
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actualIndentInChars = 8;
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backspaceUnindents = false;
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perLineData[ldMarkers] = new LineMarkers();
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perLineData[ldLevels] = new LineLevels();
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perLineData[ldState] = new LineState();
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perLineData[ldMargin] = new LineAnnotation();
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perLineData[ldAnnotation] = new LineAnnotation();
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Document::~Document() {
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for (int i = 0; i < lenWatchers; i++) {
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watchers[i].watcher->NotifyDeleted(this, watchers[i].userData);
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for (int j=0; j<ldSize; j++) {
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delete perLineData[j];
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void Document::Init() {
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for (int j=0; j<ldSize; j++) {
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perLineData[j]->Init();
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void Document::InsertLine(int line) {
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for (int j=0; j<ldSize; j++) {
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perLineData[j]->InsertLine(line);
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void Document::RemoveLine(int line) {
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for (int j=0; j<ldSize; j++) {
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perLineData[j]->RemoveLine(line);
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// Increase reference count and return its previous value.
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int Document::AddRef() {
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// Decrease reference count and return its previous value.
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// Delete the document if reference count reaches zero.
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int Document::Release() {
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int curRefCount = --refCount;
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if (curRefCount == 0)
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void Document::SetSavePoint() {
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NotifySavePoint(true);
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int Document::GetMark(int line) {
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return static_cast<LineMarkers*>(perLineData[ldMarkers])->MarkValue(line);
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int Document::AddMark(int line, int markerNum) {
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if (line <= LinesTotal()) {
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int prev = static_cast<LineMarkers*>(perLineData[ldMarkers])->
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AddMark(line, markerNum, LinesTotal());
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DocModification mh(SC_MOD_CHANGEMARKER, LineStart(line), 0, 0, 0, line);
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void Document::AddMarkSet(int line, int valueSet) {
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unsigned int m = valueSet;
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for (int i = 0; m; i++, m >>= 1)
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static_cast<LineMarkers*>(perLineData[ldMarkers])->
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AddMark(line, i, LinesTotal());
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DocModification mh(SC_MOD_CHANGEMARKER, LineStart(line), 0, 0, 0, line);
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void Document::DeleteMark(int line, int markerNum) {
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static_cast<LineMarkers*>(perLineData[ldMarkers])->DeleteMark(line, markerNum, false);
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DocModification mh(SC_MOD_CHANGEMARKER, LineStart(line), 0, 0, 0, line);
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void Document::DeleteMarkFromHandle(int markerHandle) {
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static_cast<LineMarkers*>(perLineData[ldMarkers])->DeleteMarkFromHandle(markerHandle);
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DocModification mh(SC_MOD_CHANGEMARKER, 0, 0, 0, 0);
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void Document::DeleteAllMarks(int markerNum) {
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for (int line = 0; line < LinesTotal(); line++) {
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static_cast<LineMarkers*>(perLineData[ldMarkers])->DeleteMark(line, markerNum, true);
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DocModification mh(SC_MOD_CHANGEMARKER, 0, 0, 0, 0);
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int Document::LineFromHandle(int markerHandle) {
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return static_cast<LineMarkers*>(perLineData[ldMarkers])->LineFromHandle(markerHandle);
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int Document::LineStart(int line) const {
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return cb.LineStart(line);
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int Document::LineEnd(int line) const {
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if (line == LinesTotal() - 1) {
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return LineStart(line + 1);
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int position = LineStart(line + 1) - 1;
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// When line terminator is CR+LF, may need to go back one more
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if ((position > LineStart(line)) && (cb.CharAt(position - 1) == '\r')) {
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int Document::LineFromPosition(int pos) const {
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return cb.LineFromPosition(pos);
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int Document::LineEndPosition(int position) const {
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return LineEnd(LineFromPosition(position));
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bool Document::IsLineEndPosition(int position) const {
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return LineEnd(LineFromPosition(position)) == position;
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int Document::VCHomePosition(int position) const {
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int line = LineFromPosition(position);
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int startPosition = LineStart(line);
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int endLine = LineEnd(line);
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int startText = startPosition;
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while (startText < endLine && (cb.CharAt(startText) == ' ' || cb.CharAt(startText) == '\t' ) )
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if (position == startText)
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return startPosition;
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int Document::SetLevel(int line, int level) {
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int prev = static_cast<LineLevels*>(perLineData[ldLevels])->SetLevel(line, level, LinesTotal());
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DocModification mh(SC_MOD_CHANGEFOLD | SC_MOD_CHANGEMARKER,
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LineStart(line), 0, 0, 0, line);
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mh.foldLevelNow = level;
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mh.foldLevelPrev = prev;
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int Document::GetLevel(int line) {
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return static_cast<LineLevels*>(perLineData[ldLevels])->GetLevel(line);
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void Document::ClearLevels() {
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static_cast<LineLevels*>(perLineData[ldLevels])->ClearLevels();
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static bool IsSubordinate(int levelStart, int levelTry) {
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if (levelTry & SC_FOLDLEVELWHITEFLAG)
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return (levelStart & SC_FOLDLEVELNUMBERMASK) < (levelTry & SC_FOLDLEVELNUMBERMASK);
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int Document::GetLastChild(int lineParent, int level) {
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level = GetLevel(lineParent) & SC_FOLDLEVELNUMBERMASK;
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int maxLine = LinesTotal();
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int lineMaxSubord = lineParent;
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while (lineMaxSubord < maxLine - 1) {
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EnsureStyledTo(LineStart(lineMaxSubord + 2));
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if (!IsSubordinate(level, GetLevel(lineMaxSubord + 1)))
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if (lineMaxSubord > lineParent) {
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if (level > (GetLevel(lineMaxSubord + 1) & SC_FOLDLEVELNUMBERMASK)) {
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// Have chewed up some whitespace that belongs to a parent so seek back
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if (GetLevel(lineMaxSubord) & SC_FOLDLEVELWHITEFLAG) {
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return lineMaxSubord;
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int Document::GetFoldParent(int line) {
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int level = GetLevel(line) & SC_FOLDLEVELNUMBERMASK;
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int lineLook = line - 1;
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while ((lineLook > 0) && (
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(!(GetLevel(lineLook) & SC_FOLDLEVELHEADERFLAG)) ||
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((GetLevel(lineLook) & SC_FOLDLEVELNUMBERMASK) >= level))
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if ((GetLevel(lineLook) & SC_FOLDLEVELHEADERFLAG) &&
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((GetLevel(lineLook) & SC_FOLDLEVELNUMBERMASK) < level)) {
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int Document::ClampPositionIntoDocument(int pos) {
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return Platform::Clamp(pos, 0, Length());
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bool Document::IsCrLf(int pos) {
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if (pos >= (Length() - 1))
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return (cb.CharAt(pos) == '\r') && (cb.CharAt(pos + 1) == '\n');
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static const int maxBytesInDBCSCharacter=5;
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int Document::LenChar(int pos) {
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} else if (IsCrLf(pos)) {
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} else if (SC_CP_UTF8 == dbcsCodePage) {
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unsigned char ch = static_cast<unsigned char>(cb.CharAt(pos));
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if (ch >= (0x80 + 0x40 + 0x20 + 0x10))
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else if (ch >= (0x80 + 0x40 + 0x20))
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int lengthDoc = Length();
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if ((pos + len) > lengthDoc)
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return lengthDoc -pos;
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} else if (dbcsCodePage) {
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char mbstr[maxBytesInDBCSCharacter+1];
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for (i=0; i<Platform::DBCSCharMaxLength(); i++) {
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mbstr[i] = cb.CharAt(pos+i);
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return Platform::DBCSCharLength(dbcsCodePage, mbstr);
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static bool IsTrailByte(int ch) {
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return (ch >= 0x80) && (ch < (0x80 + 0x40));
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static int BytesFromLead(int leadByte) {
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if (leadByte > 0xF4) {
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// Characters longer than 4 bytes not possible in current UTF-8
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} else if (leadByte >= 0xF0) {
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} else if (leadByte >= 0xE0) {
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} else if (leadByte >= 0xC2) {
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bool Document::InGoodUTF8(int pos, int &start, int &end) {
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while ((lead>0) && (pos-lead < 4) && IsTrailByte(static_cast<unsigned char>(cb.CharAt(lead-1))))
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int leadByte = static_cast<unsigned char>(cb.CharAt(start));
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int bytes = BytesFromLead(leadByte);
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int trailBytes = bytes - 1;
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int len = pos - lead + 1;
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if (len > trailBytes)
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// pos too far from lead
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// Check that there are enough trails for this lead
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while ((trail-lead<trailBytes) && (trail < Length())) {
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if (!IsTrailByte(static_cast<unsigned char>(cb.CharAt(trail)))) {
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// Normalise a position so that it is not halfway through a two byte character.
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// This can occur in two situations -
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// When lines are terminated with \r\n pairs which should be treated as one character.
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// When displaying DBCS text such as Japanese.
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// If moving, move the position in the indicated direction.
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int Document::MovePositionOutsideChar(int pos, int moveDir, bool checkLineEnd) {
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//Platform::DebugPrintf("NoCRLF %d %d\n", pos, moveDir);
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// If out of range, just return minimum/maximum value.
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// PLATFORM_ASSERT(pos > 0 && pos < Length());
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if (checkLineEnd && IsCrLf(pos - 1)) {
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// Not between CR and LF
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if (SC_CP_UTF8 == dbcsCodePage) {
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unsigned char ch = static_cast<unsigned char>(cb.CharAt(pos));
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if (IsTrailByte(ch) && InGoodUTF8(pos, startUTF, endUTF)) {
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// ch is a trail byte within a UTF-8 character
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// Anchor DBCS calculations at start of line because start of line can
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// not be a DBCS trail byte.
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int posCheck = LineStart(LineFromPosition(pos));
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while (posCheck < pos) {
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char mbstr[maxBytesInDBCSCharacter+1];
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for(i=0;i<Platform::DBCSCharMaxLength();i++) {
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mbstr[i] = cb.CharAt(posCheck+i);
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int mbsize = Platform::DBCSCharLength(dbcsCodePage, mbstr);
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if (posCheck + mbsize == pos) {
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} else if (posCheck + mbsize > pos) {
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return posCheck + mbsize;
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void Document::ModifiedAt(int pos) {
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void Document::CheckReadOnly() {
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if (cb.IsReadOnly() && enteredReadOnlyCount == 0) {
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enteredReadOnlyCount++;
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NotifyModifyAttempt();
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enteredReadOnlyCount--;
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// Document only modified by gateways DeleteChars, InsertString, Undo, Redo, and SetStyleAt.
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// SetStyleAt does not change the persistent state of a document
479
bool Document::DeleteChars(int pos, int len) {
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if ((pos + len) > Length())
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if (enteredModification != 0) {
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enteredModification++;
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if (!cb.IsReadOnly()) {
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SC_MOD_BEFOREDELETE | SC_PERFORMED_USER,
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int prevLinesTotal = LinesTotal();
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bool startSavePoint = cb.IsSavePoint();
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bool startSequence = false;
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const char *text = cb.DeleteChars(pos, len, startSequence);
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if (startSavePoint && cb.IsCollectingUndo())
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NotifySavePoint(!startSavePoint);
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if ((pos < Length()) || (pos == 0))
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SC_MOD_DELETETEXT | SC_PERFORMED_USER | (startSequence?SC_STARTACTION:0),
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LinesTotal() - prevLinesTotal, text));
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enteredModification--;
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return !cb.IsReadOnly();
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* Insert a string with a length.
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bool Document::InsertString(int position, const char *s, int insertLength) {
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if (insertLength <= 0) {
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if (enteredModification != 0) {
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enteredModification++;
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if (!cb.IsReadOnly()) {
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SC_MOD_BEFOREINSERT | SC_PERFORMED_USER,
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position, insertLength,
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int prevLinesTotal = LinesTotal();
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bool startSavePoint = cb.IsSavePoint();
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bool startSequence = false;
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const char *text = cb.InsertString(position, s, insertLength, startSequence);
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if (startSavePoint && cb.IsCollectingUndo())
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NotifySavePoint(!startSavePoint);
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ModifiedAt(position);
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SC_MOD_INSERTTEXT | SC_PERFORMED_USER | (startSequence?SC_STARTACTION:0),
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position, insertLength,
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LinesTotal() - prevLinesTotal, text));
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enteredModification--;
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return !cb.IsReadOnly();
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int Document::Undo() {
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if (enteredModification == 0) {
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enteredModification++;
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if (!cb.IsReadOnly()) {
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bool startSavePoint = cb.IsSavePoint();
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bool multiLine = false;
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int steps = cb.StartUndo();
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//Platform::DebugPrintf("Steps=%d\n", steps);
562
for (int step = 0; step < steps; step++) {
563
const int prevLinesTotal = LinesTotal();
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const Action &action = cb.GetUndoStep();
565
if (action.at == removeAction) {
566
NotifyModified(DocModification(
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SC_MOD_BEFOREINSERT | SC_PERFORMED_UNDO, action));
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} else if (action.at == containerAction) {
569
DocModification dm(SC_MOD_CONTAINER | SC_PERFORMED_UNDO);
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dm.token = action.position;
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NotifyModified(DocModification(
574
SC_MOD_BEFOREDELETE | SC_PERFORMED_UNDO, action));
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cb.PerformUndoStep();
577
int cellPosition = action.position;
578
if (action.at != containerAction) {
579
ModifiedAt(cellPosition);
580
newPos = cellPosition;
583
int modFlags = SC_PERFORMED_UNDO;
584
// With undo, an insertion action becomes a deletion notification
585
if (action.at == removeAction) {
586
newPos += action.lenData;
587
modFlags |= SC_MOD_INSERTTEXT;
588
} else if (action.at == insertAction) {
589
modFlags |= SC_MOD_DELETETEXT;
592
modFlags |= SC_MULTISTEPUNDOREDO;
593
const int linesAdded = LinesTotal() - prevLinesTotal;
596
if (step == steps - 1) {
597
modFlags |= SC_LASTSTEPINUNDOREDO;
599
modFlags |= SC_MULTILINEUNDOREDO;
601
NotifyModified(DocModification(modFlags, cellPosition, action.lenData,
602
linesAdded, action.data));
605
bool endSavePoint = cb.IsSavePoint();
606
if (startSavePoint != endSavePoint)
607
NotifySavePoint(endSavePoint);
609
enteredModification--;
614
int Document::Redo() {
617
if (enteredModification == 0) {
618
enteredModification++;
619
if (!cb.IsReadOnly()) {
620
bool startSavePoint = cb.IsSavePoint();
621
bool multiLine = false;
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int steps = cb.StartRedo();
623
for (int step = 0; step < steps; step++) {
624
const int prevLinesTotal = LinesTotal();
625
const Action &action = cb.GetRedoStep();
626
if (action.at == insertAction) {
627
NotifyModified(DocModification(
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SC_MOD_BEFOREINSERT | SC_PERFORMED_REDO, action));
629
} else if (action.at == containerAction) {
630
DocModification dm(SC_MOD_CONTAINER | SC_PERFORMED_REDO);
631
dm.token = action.position;
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NotifyModified(DocModification(
635
SC_MOD_BEFOREDELETE | SC_PERFORMED_REDO, action));
637
cb.PerformRedoStep();
638
if (action.at != containerAction) {
639
ModifiedAt(action.position);
640
newPos = action.position;
643
int modFlags = SC_PERFORMED_REDO;
644
if (action.at == insertAction) {
645
newPos += action.lenData;
646
modFlags |= SC_MOD_INSERTTEXT;
647
} else if (action.at == removeAction) {
648
modFlags |= SC_MOD_DELETETEXT;
651
modFlags |= SC_MULTISTEPUNDOREDO;
652
const int linesAdded = LinesTotal() - prevLinesTotal;
655
if (step == steps - 1) {
656
modFlags |= SC_LASTSTEPINUNDOREDO;
658
modFlags |= SC_MULTILINEUNDOREDO;
661
DocModification(modFlags, action.position, action.lenData,
662
linesAdded, action.data));
665
bool endSavePoint = cb.IsSavePoint();
666
if (startSavePoint != endSavePoint)
667
NotifySavePoint(endSavePoint);
669
enteredModification--;
675
* Insert a single character.
677
bool Document::InsertChar(int pos, char ch) {
680
return InsertString(pos, chs, 1);
684
* Insert a null terminated string.
686
bool Document::InsertCString(int position, const char *s) {
687
return InsertString(position, s, strlen(s));
690
void Document::ChangeChar(int pos, char ch) {
695
void Document::DelChar(int pos) {
696
DeleteChars(pos, LenChar(pos));
699
void Document::DelCharBack(int pos) {
702
} else if (IsCrLf(pos - 2)) {
703
DeleteChars(pos - 2, 2);
704
} else if (dbcsCodePage) {
705
int startChar = MovePositionOutsideChar(pos - 1, -1, false);
706
DeleteChars(startChar, pos - startChar);
708
DeleteChars(pos - 1, 1);
712
static bool isindentchar(char ch) {
713
return (ch == ' ') || (ch == '\t');
716
static int NextTab(int pos, int tabSize) {
717
return ((pos / tabSize) + 1) * tabSize;
720
static void CreateIndentation(char *linebuf, int length, int indent, int tabSize, bool insertSpaces) {
721
length--; // ensure space for \0
723
while ((indent >= tabSize) && (length > 0)) {
729
while ((indent > 0) && (length > 0)) {
737
int Document::GetLineIndentation(int line) {
739
if ((line >= 0) && (line < LinesTotal())) {
740
int lineStart = LineStart(line);
741
int length = Length();
742
for (int i = lineStart;i < length;i++) {
743
char ch = cb.CharAt(i);
747
indent = NextTab(indent, tabInChars);
755
void Document::SetLineIndentation(int line, int indent) {
756
int indentOfLine = GetLineIndentation(line);
759
if (indent != indentOfLine) {
761
CreateIndentation(linebuf, sizeof(linebuf), indent, tabInChars, !useTabs);
762
int thisLineStart = LineStart(line);
763
int indentPos = GetLineIndentPosition(line);
765
DeleteChars(thisLineStart, indentPos - thisLineStart);
766
InsertCString(thisLineStart, linebuf);
770
int Document::GetLineIndentPosition(int line) const {
773
int pos = LineStart(line);
774
int length = Length();
775
while ((pos < length) && isindentchar(cb.CharAt(pos))) {
781
int Document::GetColumn(int pos) {
783
int line = LineFromPosition(pos);
784
if ((line >= 0) && (line < LinesTotal())) {
785
for (int i = LineStart(line);i < pos;) {
786
char ch = cb.CharAt(i);
788
column = NextTab(column, tabInChars);
790
} else if (ch == '\r') {
792
} else if (ch == '\n') {
794
} else if (i >= Length()) {
798
i = MovePositionOutsideChar(i + 1, 1, false);
805
int Document::FindColumn(int line, int column) {
806
int position = LineStart(line);
807
if ((line >= 0) && (line < LinesTotal())) {
808
int columnCurrent = 0;
809
while ((columnCurrent < column) && (position < Length())) {
810
char ch = cb.CharAt(position);
812
columnCurrent = NextTab(columnCurrent, tabInChars);
814
} else if (ch == '\r') {
816
} else if (ch == '\n') {
820
position = MovePositionOutsideChar(position + 1, 1, false);
827
void Document::Indent(bool forwards, int lineBottom, int lineTop) {
828
// Dedent - suck white space off the front of the line to dedent by equivalent of a tab
829
for (int line = lineBottom; line >= lineTop; line--) {
830
int indentOfLine = GetLineIndentation(line);
832
if (LineStart(line) < LineEnd(line)) {
833
SetLineIndentation(line, indentOfLine + IndentSize());
836
SetLineIndentation(line, indentOfLine - IndentSize());
841
// Convert line endings for a piece of text to a particular mode.
842
// Stop at len or when a NUL is found.
843
// Caller must delete the returned pointer.
844
char *Document::TransformLineEnds(int *pLenOut, const char *s, size_t len, int eolMode) {
845
char *dest = new char[2 * len + 1];
846
const char *sptr = s;
848
for (size_t i = 0; (i < len) && (*sptr != '\0'); i++) {
849
if (*sptr == '\n' || *sptr == '\r') {
850
if (eolMode == SC_EOL_CR) {
852
} else if (eolMode == SC_EOL_LF) {
854
} else { // eolMode == SC_EOL_CRLF
858
if ((*sptr == '\r') && (i+1 < len) && (*(sptr+1) == '\n')) {
868
*pLenOut = (dptr - dest) - 1;
872
void Document::ConvertLineEnds(int eolModeSet) {
875
for (int pos = 0; pos < Length(); pos++) {
876
if (cb.CharAt(pos) == '\r') {
877
if (cb.CharAt(pos + 1) == '\n') {
879
if (eolModeSet == SC_EOL_CR) {
880
DeleteChars(pos + 1, 1); // Delete the LF
881
} else if (eolModeSet == SC_EOL_LF) {
882
DeleteChars(pos, 1); // Delete the CR
888
if (eolModeSet == SC_EOL_CRLF) {
889
InsertString(pos + 1, "\n", 1); // Insert LF
891
} else if (eolModeSet == SC_EOL_LF) {
892
InsertString(pos, "\n", 1); // Insert LF
893
DeleteChars(pos + 1, 1); // Delete CR
896
} else if (cb.CharAt(pos) == '\n') {
898
if (eolModeSet == SC_EOL_CRLF) {
899
InsertString(pos, "\r", 1); // Insert CR
901
} else if (eolModeSet == SC_EOL_CR) {
902
InsertString(pos, "\r", 1); // Insert CR
903
DeleteChars(pos + 1, 1); // Delete LF
910
bool Document::IsWhiteLine(int line) const {
911
int currentChar = LineStart(line);
912
int endLine = LineEnd(line);
913
while (currentChar < endLine) {
914
if (cb.CharAt(currentChar) != ' ' && cb.CharAt(currentChar) != '\t') {
922
int Document::ParaUp(int pos) {
923
int line = LineFromPosition(pos);
925
while (line >= 0 && IsWhiteLine(line)) { // skip empty lines
928
while (line >= 0 && !IsWhiteLine(line)) { // skip non-empty lines
932
return LineStart(line);
935
int Document::ParaDown(int pos) {
936
int line = LineFromPosition(pos);
937
while (line < LinesTotal() && !IsWhiteLine(line)) { // skip non-empty lines
940
while (line < LinesTotal() && IsWhiteLine(line)) { // skip empty lines
943
if (line < LinesTotal())
944
return LineStart(line);
945
else // end of a document
946
return LineEnd(line-1);
949
CharClassify::cc Document::WordCharClass(unsigned char ch) {
950
if ((SC_CP_UTF8 == dbcsCodePage) && (ch >= 0x80))
951
return CharClassify::ccWord;
952
return charClass.GetClass(ch);
956
* Used by commmands that want to select whole words.
957
* Finds the start of word at pos when delta < 0 or the end of the word when delta >= 0.
959
int Document::ExtendWordSelect(int pos, int delta, bool onlyWordCharacters) {
960
CharClassify::cc ccStart = CharClassify::ccWord;
962
if (!onlyWordCharacters)
963
ccStart = WordCharClass(cb.CharAt(pos-1));
964
while (pos > 0 && (WordCharClass(cb.CharAt(pos - 1)) == ccStart))
967
if (!onlyWordCharacters && pos < Length())
968
ccStart = WordCharClass(cb.CharAt(pos));
969
while (pos < (Length()) && (WordCharClass(cb.CharAt(pos)) == ccStart))
972
return MovePositionOutsideChar(pos, delta);
976
* Find the start of the next word in either a forward (delta >= 0) or backwards direction
978
* This is looking for a transition between character classes although there is also some
979
* additional movement to transit white space.
980
* Used by cursor movement by word commands.
982
int Document::NextWordStart(int pos, int delta) {
984
while (pos > 0 && (WordCharClass(cb.CharAt(pos - 1)) == CharClassify::ccSpace))
987
CharClassify::cc ccStart = WordCharClass(cb.CharAt(pos-1));
988
while (pos > 0 && (WordCharClass(cb.CharAt(pos - 1)) == ccStart)) {
993
CharClassify::cc ccStart = WordCharClass(cb.CharAt(pos));
994
while (pos < (Length()) && (WordCharClass(cb.CharAt(pos)) == ccStart))
996
while (pos < (Length()) && (WordCharClass(cb.CharAt(pos)) == CharClassify::ccSpace))
1003
* Find the end of the next word in either a forward (delta >= 0) or backwards direction
1005
* This is looking for a transition between character classes although there is also some
1006
* additional movement to transit white space.
1007
* Used by cursor movement by word commands.
1009
int Document::NextWordEnd(int pos, int delta) {
1012
CharClassify::cc ccStart = WordCharClass(cb.CharAt(pos-1));
1013
if (ccStart != CharClassify::ccSpace) {
1014
while (pos > 0 && WordCharClass(cb.CharAt(pos - 1)) == ccStart) {
1018
while (pos > 0 && WordCharClass(cb.CharAt(pos - 1)) == CharClassify::ccSpace) {
1023
while (pos < Length() && WordCharClass(cb.CharAt(pos)) == CharClassify::ccSpace) {
1026
if (pos < Length()) {
1027
CharClassify::cc ccStart = WordCharClass(cb.CharAt(pos));
1028
while (pos < Length() && WordCharClass(cb.CharAt(pos)) == ccStart) {
1037
* Check that the character at the given position is a word or punctuation character and that
1038
* the previous character is of a different character class.
1040
bool Document::IsWordStartAt(int pos) {
1042
CharClassify::cc ccPos = WordCharClass(CharAt(pos));
1043
return (ccPos == CharClassify::ccWord || ccPos == CharClassify::ccPunctuation) &&
1044
(ccPos != WordCharClass(CharAt(pos - 1)));
1050
* Check that the character at the given position is a word or punctuation character and that
1051
* the next character is of a different character class.
1053
bool Document::IsWordEndAt(int pos) {
1054
if (pos < Length()) {
1055
CharClassify::cc ccPrev = WordCharClass(CharAt(pos-1));
1056
return (ccPrev == CharClassify::ccWord || ccPrev == CharClassify::ccPunctuation) &&
1057
(ccPrev != WordCharClass(CharAt(pos)));
1063
* Check that the given range is has transitions between character classes at both
1064
* ends and where the characters on the inside are word or punctuation characters.
1066
bool Document::IsWordAt(int start, int end) {
1067
return IsWordStartAt(start) && IsWordEndAt(end);
1070
static inline char MakeLowerCase(char ch) {
1071
if (ch < 'A' || ch > 'Z')
1074
return static_cast<char>(ch - 'A' + 'a');
1078
* Find text in document, supporting both forward and backward
1079
* searches (just pass minPos > maxPos to do a backward search)
1080
* Has not been tested with backwards DBCS searches yet.
1082
long Document::FindText(int minPos, int maxPos, const char *s,
1083
bool caseSensitive, bool word, bool wordStart, bool regExp, int flags,
1087
regex = CreateRegexSearch(&charClass);
1088
return regex->FindText(this, minPos, maxPos, s, caseSensitive, word, wordStart, flags, length);
1091
bool forward = minPos <= maxPos;
1092
int increment = forward ? 1 : -1;
1094
// Range endpoints should not be inside DBCS characters, but just in case, move them.
1095
int startPos = MovePositionOutsideChar(minPos, increment, false);
1096
int endPos = MovePositionOutsideChar(maxPos, increment, false);
1098
// Compute actual search ranges needed
1099
int lengthFind = *length;
1100
if (lengthFind == -1)
1101
lengthFind = static_cast<int>(strlen(s));
1102
int endSearch = endPos;
1103
if (startPos <= endPos) {
1104
endSearch = endPos - lengthFind + 1;
1106
//Platform::DebugPrintf("Find %d %d %s %d\n", startPos, endPos, ft->lpstrText, lengthFind);
1107
char firstChar = s[0];
1109
firstChar = static_cast<char>(MakeUpperCase(firstChar));
1110
int pos = forward ? startPos : (startPos - 1);
1111
while (forward ? (pos < endSearch) : (pos >= endSearch)) {
1112
char ch = CharAt(pos);
1113
if (caseSensitive) {
1114
if (ch == firstChar) {
1116
if (pos + lengthFind > Platform::Maximum(startPos, endPos)) found = false;
1117
for (int posMatch = 1; posMatch < lengthFind && found; posMatch++) {
1118
ch = CharAt(pos + posMatch);
1119
if (ch != s[posMatch])
1123
if ((!word && !wordStart) ||
1124
(word && IsWordAt(pos, pos + lengthFind)) ||
1125
(wordStart && IsWordStartAt(pos)))
1130
if (MakeUpperCase(ch) == firstChar) {
1132
if (pos + lengthFind > Platform::Maximum(startPos, endPos)) found = false;
1133
for (int posMatch = 1; posMatch < lengthFind && found; posMatch++) {
1134
ch = CharAt(pos + posMatch);
1135
if (MakeUpperCase(ch) != MakeUpperCase(s[posMatch]))
1139
if ((!word && !wordStart) ||
1140
(word && IsWordAt(pos, pos + lengthFind)) ||
1141
(wordStart && IsWordStartAt(pos)))
1147
if (dbcsCodePage && (pos >= 0)) {
1148
// Ensure trying to match from start of character
1149
pos = MovePositionOutsideChar(pos, increment, false);
1153
//Platform::DebugPrintf("Not found\n");
1157
const char *Document::SubstituteByPosition(const char *text, int *length) {
1158
return regex->SubstituteByPosition(this, text, length);
1161
int Document::LinesTotal() const {
1165
void Document::ChangeCase(Range r, bool makeUpperCase) {
1166
for (int pos = r.start; pos < r.end;) {
1167
int len = LenChar(pos);
1169
char ch = CharAt(pos);
1170
if (makeUpperCase) {
1171
if (IsLowerCase(ch)) {
1172
ChangeChar(pos, static_cast<char>(MakeUpperCase(ch)));
1175
if (IsUpperCase(ch)) {
1176
ChangeChar(pos, static_cast<char>(MakeLowerCase(ch)));
1184
void Document::SetDefaultCharClasses(bool includeWordClass) {
1185
charClass.SetDefaultCharClasses(includeWordClass);
1188
void Document::SetCharClasses(const unsigned char *chars, CharClassify::cc newCharClass) {
1189
charClass.SetCharClasses(chars, newCharClass);
1192
void Document::SetStylingBits(int bits) {
1194
stylingBitsMask = (1 << stylingBits) - 1;
1197
void Document::StartStyling(int position, char mask) {
1199
endStyled = position;
1202
bool Document::SetStyleFor(int length, char style) {
1203
if (enteredStyling != 0) {
1207
style &= stylingMask;
1208
int prevEndStyled = endStyled;
1209
if (cb.SetStyleFor(endStyled, length, style, stylingMask)) {
1210
DocModification mh(SC_MOD_CHANGESTYLE | SC_PERFORMED_USER,
1211
prevEndStyled, length);
1214
endStyled += length;
1220
bool Document::SetStyles(int length, const char *styles) {
1221
if (enteredStyling != 0) {
1225
bool didChange = false;
1228
for (int iPos = 0; iPos < length; iPos++, endStyled++) {
1229
PLATFORM_ASSERT(endStyled < Length());
1230
if (cb.SetStyleAt(endStyled, styles[iPos], stylingMask)) {
1232
startMod = endStyled;
1239
DocModification mh(SC_MOD_CHANGESTYLE | SC_PERFORMED_USER,
1240
startMod, endMod - startMod + 1);
1248
void Document::EnsureStyledTo(int pos) {
1249
if ((enteredStyling == 0) && (pos > GetEndStyled())) {
1250
IncrementStyleClock();
1251
// Ask the watchers to style, and stop as soon as one responds.
1252
for (int i = 0; pos > GetEndStyled() && i < lenWatchers; i++) {
1253
watchers[i].watcher->NotifyStyleNeeded(this, watchers[i].userData, pos);
1258
int Document::SetLineState(int line, int state) {
1259
int statePrevious = static_cast<LineState*>(perLineData[ldState])->SetLineState(line, state);
1260
if (state != statePrevious) {
1261
DocModification mh(SC_MOD_CHANGELINESTATE, 0, 0, 0, 0, line);
1264
return statePrevious;
1267
int Document::GetLineState(int line) {
1268
return static_cast<LineState*>(perLineData[ldState])->GetLineState(line);
1271
int Document::GetMaxLineState() {
1272
return static_cast<LineState*>(perLineData[ldState])->GetMaxLineState();
1275
StyledText Document::MarginStyledText(int line) {
1276
LineAnnotation *pla = static_cast<LineAnnotation*>(perLineData[ldMargin]);
1277
return StyledText(pla->Length(line), pla->Text(line),
1278
pla->MultipleStyles(line), pla->Style(line), pla->Styles(line));
1281
void Document::MarginSetText(int line, const char *text) {
1282
static_cast<LineAnnotation*>(perLineData[ldMargin])->SetText(line, text);
1283
DocModification mh(SC_MOD_CHANGEMARGIN, LineStart(line), 0, 0, 0, line);
1287
void Document::MarginSetStyle(int line, int style) {
1288
static_cast<LineAnnotation*>(perLineData[ldMargin])->SetStyle(line, style);
1291
void Document::MarginSetStyles(int line, const unsigned char *styles) {
1292
static_cast<LineAnnotation*>(perLineData[ldMargin])->SetStyles(line, styles);
1295
int Document::MarginLength(int line) const {
1296
return static_cast<LineAnnotation*>(perLineData[ldMargin])->Length(line);
1299
void Document::MarginClearAll() {
1300
int maxEditorLine = LinesTotal();
1301
for (int l=0;l<maxEditorLine;l++)
1302
MarginSetText(l, 0);
1303
// Free remaining data
1304
static_cast<LineAnnotation*>(perLineData[ldMargin])->ClearAll();
1307
bool Document::AnnotationAny() const {
1308
return static_cast<LineAnnotation*>(perLineData[ldAnnotation])->AnySet();
1311
StyledText Document::AnnotationStyledText(int line) {
1312
LineAnnotation *pla = static_cast<LineAnnotation*>(perLineData[ldAnnotation]);
1313
return StyledText(pla->Length(line), pla->Text(line),
1314
pla->MultipleStyles(line), pla->Style(line), pla->Styles(line));
1317
void Document::AnnotationSetText(int line, const char *text) {
1318
const int linesBefore = AnnotationLines(line);
1319
static_cast<LineAnnotation*>(perLineData[ldAnnotation])->SetText(line, text);
1320
const int linesAfter = AnnotationLines(line);
1321
DocModification mh(SC_MOD_CHANGEANNOTATION, LineStart(line), 0, 0, 0, line);
1322
mh.annotationLinesAdded = linesAfter - linesBefore;
1326
void Document::AnnotationSetStyle(int line, int style) {
1327
static_cast<LineAnnotation*>(perLineData[ldAnnotation])->SetStyle(line, style);
1330
void Document::AnnotationSetStyles(int line, const unsigned char *styles) {
1331
static_cast<LineAnnotation*>(perLineData[ldAnnotation])->SetStyles(line, styles);
1334
int Document::AnnotationLength(int line) const {
1335
return static_cast<LineAnnotation*>(perLineData[ldAnnotation])->Length(line);
1338
int Document::AnnotationLines(int line) const {
1339
return static_cast<LineAnnotation*>(perLineData[ldAnnotation])->Lines(line);
1342
void Document::AnnotationClearAll() {
1343
int maxEditorLine = LinesTotal();
1344
for (int l=0;l<maxEditorLine;l++)
1345
AnnotationSetText(l, 0);
1346
// Free remaining data
1347
static_cast<LineAnnotation*>(perLineData[ldAnnotation])->ClearAll();
1350
void Document::IncrementStyleClock() {
1351
styleClock = (styleClock + 1) % 0x100000;
1354
void Document::DecorationFillRange(int position, int value, int fillLength) {
1355
if (decorations.FillRange(position, value, fillLength)) {
1356
DocModification mh(SC_MOD_CHANGEINDICATOR | SC_PERFORMED_USER,
1357
position, fillLength);
1362
bool Document::AddWatcher(DocWatcher *watcher, void *userData) {
1363
for (int i = 0; i < lenWatchers; i++) {
1364
if ((watchers[i].watcher == watcher) &&
1365
(watchers[i].userData == userData))
1368
WatcherWithUserData *pwNew = new WatcherWithUserData[lenWatchers + 1];
1369
for (int j = 0; j < lenWatchers; j++)
1370
pwNew[j] = watchers[j];
1371
pwNew[lenWatchers].watcher = watcher;
1372
pwNew[lenWatchers].userData = userData;
1379
bool Document::RemoveWatcher(DocWatcher *watcher, void *userData) {
1380
for (int i = 0; i < lenWatchers; i++) {
1381
if ((watchers[i].watcher == watcher) &&
1382
(watchers[i].userData == userData)) {
1383
if (lenWatchers == 1) {
1388
WatcherWithUserData *pwNew = new WatcherWithUserData[lenWatchers];
1389
for (int j = 0; j < lenWatchers - 1; j++) {
1390
pwNew[j] = (j < i) ? watchers[j] : watchers[j + 1];
1402
void Document::NotifyModifyAttempt() {
1403
for (int i = 0; i < lenWatchers; i++) {
1404
watchers[i].watcher->NotifyModifyAttempt(this, watchers[i].userData);
1408
void Document::NotifySavePoint(bool atSavePoint) {
1409
for (int i = 0; i < lenWatchers; i++) {
1410
watchers[i].watcher->NotifySavePoint(this, watchers[i].userData, atSavePoint);
1414
void Document::NotifyModified(DocModification mh) {
1415
if (mh.modificationType & SC_MOD_INSERTTEXT) {
1416
decorations.InsertSpace(mh.position, mh.length);
1417
} else if (mh.modificationType & SC_MOD_DELETETEXT) {
1418
decorations.DeleteRange(mh.position, mh.length);
1420
for (int i = 0; i < lenWatchers; i++) {
1421
watchers[i].watcher->NotifyModified(this, mh, watchers[i].userData);
1425
bool Document::IsWordPartSeparator(char ch) {
1426
return (WordCharClass(ch) == CharClassify::ccWord) && IsPunctuation(ch);
1429
int Document::WordPartLeft(int pos) {
1432
char startChar = cb.CharAt(pos);
1433
if (IsWordPartSeparator(startChar)) {
1434
while (pos > 0 && IsWordPartSeparator(cb.CharAt(pos))) {
1439
startChar = cb.CharAt(pos);
1441
if (IsLowerCase(startChar)) {
1442
while (pos > 0 && IsLowerCase(cb.CharAt(pos)))
1444
if (!IsUpperCase(cb.CharAt(pos)) && !IsLowerCase(cb.CharAt(pos)))
1446
} else if (IsUpperCase(startChar)) {
1447
while (pos > 0 && IsUpperCase(cb.CharAt(pos)))
1449
if (!IsUpperCase(cb.CharAt(pos)))
1451
} else if (IsADigit(startChar)) {
1452
while (pos > 0 && IsADigit(cb.CharAt(pos)))
1454
if (!IsADigit(cb.CharAt(pos)))
1456
} else if (IsPunctuation(startChar)) {
1457
while (pos > 0 && IsPunctuation(cb.CharAt(pos)))
1459
if (!IsPunctuation(cb.CharAt(pos)))
1461
} else if (isspacechar(startChar)) {
1462
while (pos > 0 && isspacechar(cb.CharAt(pos)))
1464
if (!isspacechar(cb.CharAt(pos)))
1466
} else if (!isascii(startChar)) {
1467
while (pos > 0 && !isascii(cb.CharAt(pos)))
1469
if (isascii(cb.CharAt(pos)))
1479
int Document::WordPartRight(int pos) {
1480
char startChar = cb.CharAt(pos);
1481
int length = Length();
1482
if (IsWordPartSeparator(startChar)) {
1483
while (pos < length && IsWordPartSeparator(cb.CharAt(pos)))
1485
startChar = cb.CharAt(pos);
1487
if (!isascii(startChar)) {
1488
while (pos < length && !isascii(cb.CharAt(pos)))
1490
} else if (IsLowerCase(startChar)) {
1491
while (pos < length && IsLowerCase(cb.CharAt(pos)))
1493
} else if (IsUpperCase(startChar)) {
1494
if (IsLowerCase(cb.CharAt(pos + 1))) {
1496
while (pos < length && IsLowerCase(cb.CharAt(pos)))
1499
while (pos < length && IsUpperCase(cb.CharAt(pos)))
1502
if (IsLowerCase(cb.CharAt(pos)) && IsUpperCase(cb.CharAt(pos - 1)))
1504
} else if (IsADigit(startChar)) {
1505
while (pos < length && IsADigit(cb.CharAt(pos)))
1507
} else if (IsPunctuation(startChar)) {
1508
while (pos < length && IsPunctuation(cb.CharAt(pos)))
1510
} else if (isspacechar(startChar)) {
1511
while (pos < length && isspacechar(cb.CharAt(pos)))
1519
bool IsLineEndChar(char c) {
1520
return (c == '\n' || c == '\r');
1523
int Document::ExtendStyleRange(int pos, int delta, bool singleLine) {
1524
int sStart = cb.StyleAt(pos);
1526
while (pos > 0 && (cb.StyleAt(pos) == sStart) && (!singleLine || !IsLineEndChar(cb.CharAt(pos))) )
1530
while (pos < (Length()) && (cb.StyleAt(pos) == sStart) && (!singleLine || !IsLineEndChar(cb.CharAt(pos))) )
1536
static char BraceOpposite(char ch) {
1559
// TODO: should be able to extend styled region to find matching brace
1560
int Document::BraceMatch(int position, int /*maxReStyle*/) {
1561
char chBrace = CharAt(position);
1562
char chSeek = BraceOpposite(chBrace);
1565
char styBrace = static_cast<char>(StyleAt(position) & stylingBitsMask);
1567
if (chBrace == '(' || chBrace == '[' || chBrace == '{' || chBrace == '<')
1570
position = position + direction;
1571
while ((position >= 0) && (position < Length())) {
1572
position = MovePositionOutsideChar(position, direction);
1573
char chAtPos = CharAt(position);
1574
char styAtPos = static_cast<char>(StyleAt(position) & stylingBitsMask);
1575
if ((position > GetEndStyled()) || (styAtPos == styBrace)) {
1576
if (chAtPos == chBrace)
1578
if (chAtPos == chSeek)
1583
position = position + direction;
1589
* Implementation of RegexSearchBase for the default built-in regular expression engine
1591
class BuiltinRegex : public RegexSearchBase {
1593
BuiltinRegex(CharClassify *charClassTable) : search(charClassTable), substituted(NULL) {}
1595
virtual ~BuiltinRegex() {
1599
virtual long FindText(Document *doc, int minPos, int maxPos, const char *s,
1600
bool caseSensitive, bool word, bool wordStart, int flags,
1603
virtual const char *SubstituteByPosition(Document* doc, const char *text, int *length);
1610
// Define a way for the Regular Expression code to access the document
1611
class DocumentIndexer : public CharacterIndexer {
1615
DocumentIndexer(Document *pdoc_, int end_) :
1616
pdoc(pdoc_), end(end_) {
1619
virtual ~DocumentIndexer() {
1622
virtual char CharAt(int index) {
1623
if (index < 0 || index >= end)
1626
return pdoc->CharAt(index);
1630
long BuiltinRegex::FindText(Document *doc, int minPos, int maxPos, const char *s,
1631
bool caseSensitive, bool, bool, int flags,
1633
bool posix = (flags & SCFIND_POSIX) != 0;
1634
int increment = (minPos <= maxPos) ? 1 : -1;
1636
int startPos = minPos;
1637
int endPos = maxPos;
1639
// Range endpoints should not be inside DBCS characters, but just in case, move them.
1640
startPos = doc->MovePositionOutsideChar(startPos, 1, false);
1641
endPos = doc->MovePositionOutsideChar(endPos, 1, false);
1643
const char *errmsg = search.Compile(s, *length, caseSensitive, posix);
1647
// Find a variable in a property file: \$(\([A-Za-z0-9_.]+\))
1648
// Replace first '.' with '-' in each property file variable reference:
1649
// Search: \$(\([A-Za-z0-9_-]+\)\.\([A-Za-z0-9_.]+\))
1650
// Replace: $(\1-\2)
1651
int lineRangeStart = doc->LineFromPosition(startPos);
1652
int lineRangeEnd = doc->LineFromPosition(endPos);
1653
if ((increment == 1) &&
1654
(startPos >= doc->LineEnd(lineRangeStart)) &&
1655
(lineRangeStart < lineRangeEnd)) {
1656
// the start position is at end of line or between line end characters.
1658
startPos = doc->LineStart(lineRangeStart);
1662
char searchEnd = s[*length - 1];
1663
int lineRangeBreak = lineRangeEnd + increment;
1664
for (int line = lineRangeStart; line != lineRangeBreak; line += increment) {
1665
int startOfLine = doc->LineStart(line);
1666
int endOfLine = doc->LineEnd(line);
1667
if (increment == 1) {
1668
if (line == lineRangeStart) {
1669
if ((startPos != startOfLine) && (s[0] == '^'))
1670
continue; // Can't match start of line if start position after start of line
1671
startOfLine = startPos;
1673
if (line == lineRangeEnd) {
1674
if ((endPos != endOfLine) && (searchEnd == '$'))
1675
continue; // Can't match end of line if end position before end of line
1679
if (line == lineRangeEnd) {
1680
if ((endPos != startOfLine) && (s[0] == '^'))
1681
continue; // Can't match start of line if end position after start of line
1682
startOfLine = endPos;
1684
if (line == lineRangeStart) {
1685
if ((startPos != endOfLine) && (searchEnd == '$'))
1686
continue; // Can't match end of line if start position before end of line
1687
endOfLine = startPos;
1691
DocumentIndexer di(doc, endOfLine);
1692
int success = search.Execute(di, startOfLine, endOfLine);
1694
pos = search.bopat[0];
1695
lenRet = search.eopat[0] - search.bopat[0];
1696
if (increment == -1) {
1697
// Check for the last match on this line.
1698
int repetitions = 1000; // Break out of infinite loop
1699
while (success && (search.eopat[0] <= endOfLine) && (repetitions--)) {
1700
success = search.Execute(di, pos+1, endOfLine);
1702
if (search.eopat[0] <= minPos) {
1703
pos = search.bopat[0];
1704
lenRet = search.eopat[0] - search.bopat[0];
1718
const char *BuiltinRegex::SubstituteByPosition(Document* doc, const char *text, int *length) {
1719
delete []substituted;
1721
DocumentIndexer di(doc, doc->Length());
1722
if (!search.GrabMatches(di))
1724
unsigned int lenResult = 0;
1725
for (int i = 0; i < *length; i++) {
1726
if (text[i] == '\\') {
1727
if (text[i + 1] >= '1' && text[i + 1] <= '9') {
1728
unsigned int patNum = text[i + 1] - '0';
1729
lenResult += search.eopat[patNum] - search.bopat[patNum];
1732
switch (text[i + 1]) {
1748
substituted = new char[lenResult + 1];
1749
char *o = substituted;
1750
for (int j = 0; j < *length; j++) {
1751
if (text[j] == '\\') {
1752
if (text[j + 1] >= '1' && text[j + 1] <= '9') {
1753
unsigned int patNum = text[j + 1] - '0';
1754
unsigned int len = search.eopat[patNum] - search.bopat[patNum];
1755
if (search.pat[patNum]) // Will be null if try for a match that did not occur
1756
memcpy(o, search.pat[patNum], len);
1793
*length = lenResult;
1797
#ifndef SCI_OWNREGEX
1799
#ifdef SCI_NAMESPACE
1801
RegexSearchBase *Scintilla::CreateRegexSearch(CharClassify *charClassTable) {
1802
return new BuiltinRegex(charClassTable);
1807
RegexSearchBase *CreateRegexSearch(CharClassify *charClassTable) {
1808
return new BuiltinRegex(charClassTable);