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// Scintilla source code edit control
/** @file WindowAccessor.cxx
** Rapid easy access to contents of a Scintilla.
**/
// Copyright 1998-2001 by Neil Hodgson <neilh@scintilla.org>
// The License.txt file describes the conditions under which this software may be distributed.
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <stdio.h>
#include "Platform.h"
#include "PropSet.h"
#include "Accessor.h"
#include "WindowAccessor.h"
#include "Scintilla.h"
WindowAccessor::~WindowAccessor() {
}
bool WindowAccessor::InternalIsLeadByte(char ch) {
if (SC_CP_UTF8 == codePage)
// For lexing, all characters >= 0x80 are treated the
// same so none is considered a lead byte.
return false;
else
return Platform::IsDBCSLeadByte(codePage, ch);
}
void WindowAccessor::Fill(int position) {
if (lenDoc == -1)
lenDoc = Platform::SendScintilla(id, SCI_GETTEXTLENGTH, 0, 0);
startPos = position - slopSize;
if (startPos + bufferSize > lenDoc)
startPos = lenDoc - bufferSize;
if (startPos < 0)
startPos = 0;
endPos = startPos + bufferSize;
if (endPos > lenDoc)
endPos = lenDoc;
TextRange tr = {{startPos, endPos}, buf};
Platform::SendScintillaPointer(id, SCI_GETTEXTRANGE, 0, &tr);
}
bool WindowAccessor::Match(int pos, const char *s) {
for (int i=0; *s; i++) {
if (*s != SafeGetCharAt(pos+i))
return false;
s++;
}
return true;
}
char WindowAccessor::StyleAt(int position) {
return static_cast<char>(Platform::SendScintilla(
id, SCI_GETSTYLEAT, position, 0));
}
int WindowAccessor::GetLine(int position) {
return Platform::SendScintilla(id, SCI_LINEFROMPOSITION, position, 0);
}
int WindowAccessor::LineStart(int line) {
return Platform::SendScintilla(id, SCI_POSITIONFROMLINE, line, 0);
}
int WindowAccessor::LevelAt(int line) {
return Platform::SendScintilla(id, SCI_GETFOLDLEVEL, line, 0);
}
int WindowAccessor::Length() {
if (lenDoc == -1)
lenDoc = Platform::SendScintilla(id, SCI_GETTEXTLENGTH, 0, 0);
return lenDoc;
}
int WindowAccessor::GetLineState(int line) {
return Platform::SendScintilla(id, SCI_GETLINESTATE, line);
}
int WindowAccessor::SetLineState(int line, int state) {
return Platform::SendScintilla(id, SCI_SETLINESTATE, line, state);
}
void WindowAccessor::StartAt(unsigned int start, char chMask) {
Platform::SendScintilla(id, SCI_STARTSTYLING, start, chMask);
}
void WindowAccessor::StartSegment(unsigned int pos) {
startSeg = pos;
}
void WindowAccessor::ColourTo(unsigned int pos, int chAttr) {
// Only perform styling if non empty range
if (pos != startSeg - 1) {
if (pos < startSeg) {
Platform::DebugPrintf("Bad colour positions %d - %d\n", startSeg, pos);
}
if (validLen + (pos - startSeg + 1) >= bufferSize)
Flush();
if (validLen + (pos - startSeg + 1) >= bufferSize) {
// Too big for buffer so send directly
Platform::SendScintilla(id, SCI_SETSTYLING, pos - startSeg + 1, chAttr);
} else {
if (chAttr != chWhile)
chFlags = 0;
chAttr |= chFlags;
for (unsigned int i = startSeg; i <= pos; i++) {
styleBuf[validLen++] = static_cast<char>(chAttr);
}
}
}
startSeg = pos+1;
}
void WindowAccessor::SetLevel(int line, int level) {
Platform::SendScintilla(id, SCI_SETFOLDLEVEL, line, level);
}
void WindowAccessor::Flush() {
startPos = extremePosition;
lenDoc = -1;
if (validLen > 0) {
Platform::SendScintillaPointer(id, SCI_SETSTYLINGEX, validLen,
styleBuf);
validLen = 0;
}
}
int WindowAccessor::IndentAmount(int line, int *flags, PFNIsCommentLeader pfnIsCommentLeader) {
int end = Length();
int spaceFlags = 0;
// Determines the indentation level of the current line and also checks for consistent
// indentation compared to the previous line.
// Indentation is judged consistent when the indentation whitespace of each line lines
// the same or the indentation of one line is a prefix of the other.
int pos = LineStart(line);
char ch = (*this)[pos];
int indent = 0;
bool inPrevPrefix = line > 0;
int posPrev = inPrevPrefix ? LineStart(line-1) : 0;
while ((ch == ' ' || ch == '\t') && (pos < end)) {
if (inPrevPrefix) {
char chPrev = (*this)[posPrev++];
if (chPrev == ' ' || chPrev == '\t') {
if (chPrev != ch)
spaceFlags |= wsInconsistent;
} else {
inPrevPrefix = false;
}
}
if (ch == ' ') {
spaceFlags |= wsSpace;
indent++;
} else { // Tab
spaceFlags |= wsTab;
if (spaceFlags & wsSpace)
spaceFlags |= wsSpaceTab;
indent = (indent / 8 + 1) * 8;
}
ch = (*this)[++pos];
}
*flags = spaceFlags;
indent += SC_FOLDLEVELBASE;
// if completely empty line or the start of a comment...
if (isspace(ch) || (pfnIsCommentLeader && (*pfnIsCommentLeader)(*this, pos, end-pos)) )
return indent | SC_FOLDLEVELWHITEFLAG;
else
return indent;
}
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