int EBuffer::MoveNextEqualIndent() { int L = VToR(CP.Row); int I = LineIndented(L); while (L++ < RCount - 1) if ((RLine(L)->Count > 0) && (LineIndented(L) == I)) return SetPosR(I, L); return 0; }
int EBuffer::MovePrevEqualIndent() { int L = VToR(CP.Row); int I = LineIndented(L); while (--L >= 0) if ((RLine(L)->Count > 0) && (LineIndented(L) == I)) return SetPosR(I, L); return 0; }
int EBuffer::IndentLine(int Row, int Indent) { int I, C; int Ind = Indent; if (Row < 0) return 0; if (Row >= RCount) return 0; if (Indent < 0) Indent = 0; I = LineIndented(Row); if (Indent != I) { if (I > 0) if (DelText(Row, 0, I) == 0) return 0; if (Indent > 0) { C = 0; if (BFI(this, BFI_IndentWithTabs)) { char ch = 9; while (BFI(this, BFI_TabSize) <= Indent) { if (InsText(Row, C, 1, &ch) == 0) return 0; Indent -= BFI(this, BFI_TabSize); C += BFI(this, BFI_TabSize); } } if (Indent > 0) if (InsText(Row, C, Indent, 0) == 0) return 0; } } return Ind - I; }
int EBuffer::BlockUnindent() { EPoint B, E; int L; AutoExtend = 0; if (CheckBlock() == 0) return 0; if (RCount <= 0) return 0; B = BB; E = BE; Draw(B.Row, E.Row); if (SetPosR(B.Col, B.Row) == 0) return 0; for (L = B.Row; L <= E.Row; L++) { switch (BlockMode) { case bmStream: case bmLine: if (L < E.Row || E.Col != 0) { int I = LineIndented(L) - 1; if (I >= 0) IndentLine(L, I); } break; case bmColumn: if (L < E.Row) { if (InsText(L, E.Col, 1, 0) == 0) return 0; if (DelText(L, B.Col, 1) == 0) return 0; } break; } } if (SetPosR(B.Col, B.Row) == 0) return 0; return 1; }
int EBuffer::LineCenter() { if (LineTrim() == 0) return 0; int ind = LineIndented(VToR(CP.Row)); int left = BFI(this, BFI_LeftMargin); int right = BFI(this, BFI_RightMargin); int len = LineLen(); //int chs = len - ind; int newind = left + ((right - left) - (len - ind)) / 2; if (newind < left) newind = left; return IndentLine(VToR(CP.Row), newind); }
int EBuffer::BackSpace() { int Y = VToR(CP.Row); if (CheckBlock() == 1 && BFI(this, BFI_BackSpKillBlock)) { if (BlockKill() == 0) return 0; } else if (BFI(this, BFI_WordWrap) == 2 && CP.Row > 0 && !IsLineBlank(Y - 1) && CP.Col <= BFI(this, BFI_LeftMargin) && CP.Col <= LineIndented(Y)) { if (SetPos(LineLen(Y - 1), CP.Row - 1) == 0) return 0; } else if (CP.Col == 0) { if (CP.Row > 0) if (ExposeRow(VToR(CP.Row) - 1) == 0) return 0; if (MoveUp() == 0) return 0; if (MoveLineEnd() == 0) return 0; if (LineJoin() == 0) return 0; } else { if (BFI(this, BFI_BackSpUnindents) && (LineIndented(Y) == CP.Col)) { int C = CP.Col, C1 = 0; int L = VToR(CP.Row); C1 = C; while (L > 0 && (IsLineBlank(L - 1) || (C1 = LineIndented(L - 1)) >= C)) L--; if (L == 0) C1 = 0; if (C1 == C) C1--; if (C1 < 0) C1 = 0; if (C1 > C) C1 = C; if (SetPos(C1, CP.Row) == 0) return 0; if (C > LineIndented(Y)) return 0; if (DelText(Y, C1, C - C1) == 0) return 0; if (BFI(this, BFI_Insert) == 0) if (InsText(Y, C1, 1, " ") == 0) return 0; } else if (BFI(this, BFI_BackSpKillTab)) { int P; int C = CP.Col, C1; P = CharOffset(RLine(Y), C - 1); C1 = ScreenPos(RLine(Y), P); if (SetPos(C1, CP.Row) == 0) return 0; if (DelText(Y, C1, C - C1) == 0) return 0; if (BFI(this, BFI_Insert) == 0) if (InsText(Y, C1, 1, " ") == 0) return 0; } else { if (MovePrev() == 0) return 0; ELine *L = RLine(Y); int C = CharOffset(L, CP.Col); if (L->Count > 0 && L->Chars[C] == 9) { /* We're on top of tab character. Skip over all spaces and tabs so that only the last space/tab gets deleted. */ while (C < L->Count && (L->Chars[C+1] == 9 || L->Chars[C+1] == ' ')) C++; } if (DelText(Y, ScreenPos(L, C), 1) == 0) return 0; if (BFI(this, BFI_Insert) == 0) if (InsText(Y, ScreenPos(L, C), 1, " ") == 0) return 0; } } if (BFI(this, BFI_WordWrap) == 2) { if (DoWrap(0) == 0) return 0; } if (BFI(this, BFI_Trim)) { Y = VToR(CP.Row); if (TrimLine(Y) == 0) return 0; } return 1; }
int EBuffer::DoWrap(int WrapAll) { int L, Len, C, P, Ind; PELine LP; int Left = BFI(this, BFI_LeftMargin), Right = BFI(this, BFI_RightMargin); int FirstParaLine; int NoChange = 0, NoChangeX = 0; if (Left >= Right) return 0; L = VToR(CP.Row); FirstParaLine = 0; if (L > 0) if (IsLineBlank(L - 1)) FirstParaLine = L; while (L < RCount) { NoChange = 1; if (VToR(CP.Row) != L || L != FirstParaLine) { if (VToR(CP.Row) == L) if (CP.Col <= LineIndented(L)) if (SetPos(Left, CP.Row) == 0) WFAIL(1); Ind = IndentLine(L, Left); if (VToR(CP.Row) == L) if (SetPos((CP.Col + Ind > 0) ? CP.Col + Ind : 0, CP.Row) == 0) WFAIL(2); NoChange = 0; } Len = LineLen(L); if (IsLineBlank(L)) break; if (Len < Right) { int firstwordbeg = -1; int firstwordend = -1; int X; PELine lp; if (L < RCount - 1) { IndentLine(L + 1, 0); if ((ScreenPos(RLine(L + 1), RLine(L + 1)->Count) == 0) || (RLine(L + 1)->Chars[0] == '>') || (RLine(L + 1)->Chars[0] == '<')) break; } else break; if (L + 1 >= RCount) break; lp = RLine(L + 1); for (X = 0; X < lp->Count; X++) { if (firstwordbeg == -1 && ((lp->Chars[X] != ' ') && (lp->Chars[X] != '\t'))) { firstwordbeg = X; } else if (firstwordend == -1 && ((lp->Chars[X] == ' ' || lp->Chars[X] == '\t'))) { firstwordend = X - 1; } } if (firstwordbeg != -1) if (firstwordend == -1) firstwordend = lp->Count; if (firstwordend == -1) break; if (Right - Len > firstwordend - firstwordbeg) { if (JoinLine(L, Len + 1) == 0) WFAIL(3); NoChange = 0; continue; } else IndentLine(L + 1, Left); } else if (Len > Right) { C = Right; P = CharOffset(LP = RLine(L), C); while ((C > Left) && ((LP->Chars[P] != ' ') && (LP->Chars[P] != 9))) C = ScreenPos(LP, --P); if (P <= Left) { L++; continue; } C = ScreenPos(LP, P); if (SplitLine(L, C) == 0) WFAIL(4); IndentLine(L + 1, Left); if (L < RCount - 2 && LineLen(L + 1) == Left) { if (!IsLineBlank(L + 2)) { if (JoinLine(L + 1, Left) == 0) WFAIL(5); } } if (L == VToR(CP.Row) && CP.Col > C) { if (SetPos(Left + CP.Col - C - 1, CP.Row + 1) == 0) WFAIL(6); } NoChange = 0; L++; continue; } if (WrapAll == 0) if (NoChangeX) { //printf("\n\nBreak OUT = %d\n\x7", L); break; } L++; NoChangeX = NoChange; } if (WrapAll == 1) if (SetPosR(Left, (L < RCount - 2) ? (L + 2) : (L < RCount - 1) ? (L + 1) : (RCount - 1)) == 0) WFAIL(7); return 1; }