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// SciTE - Scintilla based Text Editor
// Accessor.cxx - rapid easy access to contents of a Scintilla
// Copyright 1998-2000 by Neil Hodgson <neilh@scintilla.org>
// The License.txt file describes the conditions under which this software may be distributed.
#include <stdlib.h>
#include <ctype.h>
#include <stdio.h>
#include "Platform.h"
#include "PropSet.h"
#include "Accessor.h"
#include "Scintilla.h"
bool Accessor::InternalIsLeadByte(char ch) {
#if PLAT_GTK
// TODO: support DBCS under GTK+
return false;
#elif PLAT_WIN
return IsDBCSLeadByteEx(codePage, ch);
#elif PLAT_WX
return false;
#endif
}
void Accessor::Fill(int position) {
if (lenDoc == -1)
lenDoc = Platform::SendScintilla(id, WM_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::SendScintilla(id, EM_GETTEXTRANGE, 0, reinterpret_cast<LPARAM>(&tr));
}
char Accessor::StyleAt(int position) {
return static_cast<char>(Platform::SendScintilla(
id, SCI_GETSTYLEAT, position, 0));
}
int Accessor::GetLine(int position) {
return Platform::SendScintilla(id, EM_LINEFROMCHAR, position, 0);
}
int Accessor::LineStart(int line) {
return Platform::SendScintilla(id, EM_LINEINDEX, line, 0);
}
int Accessor::LevelAt(int line) {
return Platform::SendScintilla(id, SCI_GETFOLDLEVEL, line, 0);
}
int Accessor::Length() {
if (lenDoc == -1)
lenDoc = Platform::SendScintilla(id, WM_GETTEXTLENGTH, 0, 0);
return lenDoc;
}
int Accessor::GetLineState(int line) {
return Platform::SendScintilla(id, SCI_GETLINESTATE, line);
}
int Accessor::SetLineState(int line, int state) {
return Platform::SendScintilla(id, SCI_SETLINESTATE, line, state);
}
void StylingContext::StartAt(unsigned int start, char chMask) {
Platform::SendScintilla(id, SCI_STARTSTYLING, start, chMask);
}
void StylingContext::StartSegment(unsigned int pos) {
startSeg = pos;
}
void StylingContext::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++] = chAttr;
}
}
}
startSeg = pos+1;
}
int StylingContext::GetLine(int position) {
return Platform::SendScintilla(id, EM_LINEFROMCHAR, position, 0);
}
void StylingContext::SetLevel(int line, int level) {
Platform::SendScintilla(id, SCI_SETFOLDLEVEL, line, level);
}
void StylingContext::Flush() {
if (validLen > 0) {
Platform::SendScintilla(id, SCI_SETSTYLINGEX, validLen,
reinterpret_cast<LPARAM>(styleBuf));
validLen = 0;
}
}
int StylingContext::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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