Use window height, not buffer.
Clear screen (\e[2J) will scroll in a new window the first time it's used, or the window has scrolled, or the cursor is on the last line of the buffer. Restore Cursor Position (\e[u) will recognise screen size changes and limit itself to the new boundaries.
This commit is contained in:
Jason Hood
parent
9fa86512f3
commit
7539473550
222
ANSI.c
222
ANSI.c
@ -111,7 +111,7 @@
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v1.66, 20 & 21 September, 2013:
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fix 32-bit process trying to detect 64-bit process.
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v1.70, 25 January to 18 February, 2014:
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v1.70, 25 January to 20 February, 2014:
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don't hook ourself from LoadLibrary or LoadLibraryEx;
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update the LoadLibraryEx flags that should not cause hooking;
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inject by manipulating the import directory table; for 64-bit AnyCPU use
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@ -126,7 +126,8 @@
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don't hook a module that's already hooked us;
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better parsing of escape & CSI sequences;
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ignore xterm 38 & 48 SGR values;
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change G1 blank from space to U+00A0 - No-Break Space.
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change G1 blank from space to U+00A0 - No-Break Space;
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use window height, not buffer.
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*/
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#include "ansicon.h"
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@ -156,6 +157,7 @@ int es_argv[MAX_ARG]; // escape sequence args
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TCHAR Pt_arg[MAX_PATH*2]; // text parameter for Operating System Command
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int Pt_len;
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BOOL shifted;
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int screen_top = -1; // initial window top when cleared
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// DEC Special Graphics Character Set from
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@ -473,6 +475,17 @@ void InterpretEscSeq( void )
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SMALL_RECT Rect;
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CHAR_INFO CharInfo;
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#define WIDTH Info.dwSize.X
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#define CUR Info.dwCursorPosition
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#define WIN Info.srWindow
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#define TOP WIN.Top
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#define BOTTOM WIN.Bottom
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#define FillBlank( len, Pos ) \
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FillConsoleOutputCharacter( hConOut, ' ', len, Pos, &NumberOfCharsWritten );\
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FillConsoleOutputAttribute( hConOut, Info.wAttributes, len, Pos, \
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&NumberOfCharsWritten )
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if (prefix == '[')
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{
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if (prefix2 == '?' && (suffix == 'h' || suffix == 'l'))
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@ -613,35 +626,50 @@ void InterpretEscSeq( void )
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switch (es_argv[0])
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{
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case 0: // ESC[0J erase from cursor to end of display
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len = (Info.dwSize.Y - Info.dwCursorPosition.Y - 1) * Info.dwSize.X
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+ Info.dwSize.X - Info.dwCursorPosition.X - 1;
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FillConsoleOutputCharacter( hConOut, ' ', len,
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Info.dwCursorPosition,
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&NumberOfCharsWritten );
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FillConsoleOutputAttribute( hConOut, Info.wAttributes, len,
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Info.dwCursorPosition,
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&NumberOfCharsWritten );
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len = (BOTTOM - CUR.Y) * WIDTH + WIDTH - CUR.X;
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FillBlank( len, CUR );
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return;
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case 1: // ESC[1J erase from start to cursor.
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Pos.X = 0;
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Pos.Y = 0;
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len = Info.dwCursorPosition.Y * Info.dwSize.X
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+ Info.dwCursorPosition.X + 1;
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FillConsoleOutputCharacter( hConOut, ' ', len, Pos,
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&NumberOfCharsWritten );
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FillConsoleOutputAttribute( hConOut, Info.wAttributes, len, Pos,
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&NumberOfCharsWritten );
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Pos.Y = TOP;
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len = (CUR.Y - TOP) * WIDTH + CUR.X + 1;
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FillBlank( len, Pos );
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return;
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case 2: // ESC[2J Clear screen and home cursor
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if (TOP != screen_top || BOTTOM == Info.dwSize.Y - 1)
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{
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// Rather than clearing the existing window, make the current
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// line the new top of the window (assuming this is the first
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// thing a program does).
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int range = BOTTOM - TOP;
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if (CUR.Y + range < Info.dwSize.Y)
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{
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TOP = CUR.Y;
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BOTTOM = TOP + range;
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}
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else
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{
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BOTTOM = Info.dwSize.Y - 1;
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TOP = BOTTOM - range;
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Rect.Left = 0;
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Rect.Right = WIDTH - 1;
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Rect.Top = CUR.Y - TOP;
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Rect.Bottom = CUR.Y - 1;
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Pos.X = Pos.Y = 0;
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CharInfo.Char.UnicodeChar = ' ';
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CharInfo.Attributes = Info.wAttributes;
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ScrollConsoleScreenBuffer(hConOut, &Rect, NULL, Pos, &CharInfo);
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}
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SetConsoleWindowInfo( hConOut, TRUE, &WIN );
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screen_top = TOP;
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}
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Pos.X = 0;
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Pos.Y = 0;
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len = Info.dwSize.X * Info.dwSize.Y;
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FillConsoleOutputCharacter( hConOut, ' ', len, Pos,
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&NumberOfCharsWritten );
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FillConsoleOutputAttribute( hConOut, Info.wAttributes, len, Pos,
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&NumberOfCharsWritten );
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Pos.Y = TOP;
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len = (BOTTOM - TOP + 1) * WIDTH;
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FillBlank( len, Pos );
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// Not technically correct, but perhaps expected.
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SetConsoleCursorPosition( hConOut, Pos );
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return;
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@ -655,34 +683,20 @@ void InterpretEscSeq( void )
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switch (es_argv[0])
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{
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case 0: // ESC[0K Clear to end of line
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len = Info.dwSize.X - Info.dwCursorPosition.X + 1;
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FillConsoleOutputCharacter( hConOut, ' ', len,
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Info.dwCursorPosition,
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&NumberOfCharsWritten );
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FillConsoleOutputAttribute( hConOut, Info.wAttributes, len,
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Info.dwCursorPosition,
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&NumberOfCharsWritten );
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len = WIDTH - CUR.X + 1;
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FillBlank( len, CUR );
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return;
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case 1: // ESC[1K Clear from start of line to cursor
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Pos.X = 0;
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Pos.Y = Info.dwCursorPosition.Y;
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FillConsoleOutputCharacter( hConOut, ' ',
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Info.dwCursorPosition.X + 1, Pos,
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&NumberOfCharsWritten );
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FillConsoleOutputAttribute( hConOut, Info.wAttributes,
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Info.dwCursorPosition.X + 1, Pos,
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&NumberOfCharsWritten );
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Pos.Y = CUR.Y;
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FillBlank( CUR.X + 1, Pos );
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return;
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case 2: // ESC[2K Clear whole line.
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Pos.X = 0;
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Pos.Y = Info.dwCursorPosition.Y;
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FillConsoleOutputCharacter( hConOut, ' ', Info.dwSize.X, Pos,
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&NumberOfCharsWritten );
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FillConsoleOutputAttribute( hConOut, Info.wAttributes,
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Info.dwSize.X, Pos,
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&NumberOfCharsWritten );
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Pos.Y = CUR.Y;
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FillBlank( WIDTH, Pos );
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return;
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default:
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@ -692,82 +706,74 @@ void InterpretEscSeq( void )
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case 'X': // ESC[#X Erase # characters.
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if (es_argc == 0) es_argv[es_argc++] = 1; // ESC[X == ESC[1X
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if (es_argc != 1) return;
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FillConsoleOutputCharacter( hConOut, ' ', es_argv[0],
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Info.dwCursorPosition,
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&NumberOfCharsWritten );
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FillConsoleOutputAttribute( hConOut, Info.wAttributes, es_argv[0],
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Info.dwCursorPosition,
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&NumberOfCharsWritten );
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FillBlank( es_argv[0], CUR );
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return;
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case 'L': // ESC[#L Insert # blank lines.
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if (es_argc == 0) es_argv[es_argc++] = 1; // ESC[L == ESC[1L
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if (es_argc != 1) return;
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Rect.Left = 0;
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Rect.Top = Info.dwCursorPosition.Y;
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Rect.Right = Info.dwSize.X - 1;
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Rect.Bottom = Info.dwSize.Y - 1;
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Rect.Left = WIN.Left = 0;
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Rect.Right = WIN.Right = WIDTH - 1;
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Rect.Top = CUR.Y;
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Rect.Bottom = BOTTOM;
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Pos.X = 0;
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Pos.Y = Info.dwCursorPosition.Y + es_argv[0];
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Pos.Y = CUR.Y + es_argv[0];
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CharInfo.Char.UnicodeChar = ' ';
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CharInfo.Attributes = Info.wAttributes;
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ScrollConsoleScreenBuffer( hConOut, &Rect, NULL, Pos, &CharInfo );
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ScrollConsoleScreenBuffer( hConOut, &Rect, &WIN, Pos, &CharInfo );
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// Technically should home the cursor, but perhaps not expected.
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return;
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case 'M': // ESC[#M Delete # lines.
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if (es_argc == 0) es_argv[es_argc++] = 1; // ESC[M == ESC[1M
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if (es_argc != 1) return;
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if (es_argv[0] > Info.dwSize.Y - Info.dwCursorPosition.Y)
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es_argv[0] = Info.dwSize.Y - Info.dwCursorPosition.Y;
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Rect.Left = 0;
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Rect.Top = Info.dwCursorPosition.Y + es_argv[0];
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Rect.Right = Info.dwSize.X - 1;
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Rect.Bottom = Info.dwSize.Y - 1;
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Rect.Left = WIN.Left = 0;
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Rect.Right = WIN.Right = WIDTH - 1;
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Rect.Bottom = BOTTOM;
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Rect.Top = CUR.Y - es_argv[0];
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Pos.X = 0;
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Pos.Y = Info.dwCursorPosition.Y;
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Pos.Y = TOP = CUR.Y;
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CharInfo.Char.UnicodeChar = ' ';
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CharInfo.Attributes = Info.wAttributes;
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ScrollConsoleScreenBuffer( hConOut, &Rect, NULL, Pos, &CharInfo );
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ScrollConsoleScreenBuffer( hConOut, &Rect, &WIN, Pos, &CharInfo );
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// Technically should home the cursor, but perhaps not expected.
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return;
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case 'P': // ESC[#P Delete # characters.
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if (es_argc == 0) es_argv[es_argc++] = 1; // ESC[P == ESC[1P
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if (es_argc != 1) return;
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if (Info.dwCursorPosition.X + es_argv[0] > Info.dwSize.X - 1)
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es_argv[0] = Info.dwSize.X - Info.dwCursorPosition.X;
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Rect.Left = Info.dwCursorPosition.X + es_argv[0];
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Rect.Top = Info.dwCursorPosition.Y;
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Rect.Right = Info.dwSize.X - 1;
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Rect.Bottom = Info.dwCursorPosition.Y;
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Rect.Left = WIN.Left = CUR.X;
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Rect.Right = WIN.Right = WIDTH - 1;
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Pos.X = CUR.X - es_argv[0];
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Pos.Y =
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Rect.Top =
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Rect.Bottom = CUR.Y;
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CharInfo.Char.UnicodeChar = ' ';
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CharInfo.Attributes = Info.wAttributes;
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ScrollConsoleScreenBuffer( hConOut, &Rect, NULL, Info.dwCursorPosition,
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&CharInfo );
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ScrollConsoleScreenBuffer( hConOut, &Rect, &WIN, Pos, &CharInfo );
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return;
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case '@': // ESC[#@ Insert # blank characters.
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if (es_argc == 0) es_argv[es_argc++] = 1; // ESC[@ == ESC[1@
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if (es_argc != 1) return;
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if (Info.dwCursorPosition.X + es_argv[0] > Info.dwSize.X - 1)
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es_argv[0] = Info.dwSize.X - Info.dwCursorPosition.X;
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Rect.Left = Info.dwCursorPosition.X;
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Rect.Top = Info.dwCursorPosition.Y;
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Rect.Right = Info.dwSize.X - 1 - es_argv[0];
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Rect.Bottom = Info.dwCursorPosition.Y;
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Pos.X = Info.dwCursorPosition.X + es_argv[0];
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Pos.Y = Info.dwCursorPosition.Y;
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Rect.Left = WIN.Left = CUR.X;
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Rect.Right = WIN.Right = WIDTH - 1;
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Pos.X = CUR.X + es_argv[0];
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Pos.Y =
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Rect.Top =
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Rect.Bottom = CUR.Y;
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CharInfo.Char.UnicodeChar = ' ';
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CharInfo.Attributes = Info.wAttributes;
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ScrollConsoleScreenBuffer( hConOut, &Rect, NULL, Pos, &CharInfo );
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ScrollConsoleScreenBuffer( hConOut, &Rect, &WIN, Pos, &CharInfo );
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return;
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case 'k': // ESC[#k
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case 'A': // ESC[#A Moves cursor up # lines
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if (es_argc == 0) es_argv[es_argc++] = 1; // ESC[A == ESC[1A
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if (es_argc != 1) return;
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Pos.Y = Info.dwCursorPosition.Y - es_argv[0];
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if (Pos.Y < 0) Pos.Y = 0;
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Pos.X = Info.dwCursorPosition.X;
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Pos.Y = CUR.Y - es_argv[0];
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if (Pos.Y < TOP) Pos.Y = TOP;
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Pos.X = CUR.X;
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SetConsoleCursorPosition( hConOut, Pos );
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return;
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@ -775,9 +781,9 @@ void InterpretEscSeq( void )
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case 'B': // ESC[#B Moves cursor down # lines
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if (es_argc == 0) es_argv[es_argc++] = 1; // ESC[B == ESC[1B
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if (es_argc != 1) return;
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Pos.Y = Info.dwCursorPosition.Y + es_argv[0];
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if (Pos.Y >= Info.dwSize.Y) Pos.Y = Info.dwSize.Y - 1;
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Pos.X = Info.dwCursorPosition.X;
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Pos.Y = CUR.Y + es_argv[0];
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if (Pos.Y > BOTTOM) Pos.Y = BOTTOM;
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Pos.X = CUR.X;
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SetConsoleCursorPosition( hConOut, Pos );
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return;
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@ -785,9 +791,9 @@ void InterpretEscSeq( void )
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case 'C': // ESC[#C Moves cursor forward # spaces
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if (es_argc == 0) es_argv[es_argc++] = 1; // ESC[C == ESC[1C
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if (es_argc != 1) return;
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Pos.X = Info.dwCursorPosition.X + es_argv[0];
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if (Pos.X >= Info.dwSize.X) Pos.X = Info.dwSize.X - 1;
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Pos.Y = Info.dwCursorPosition.Y;
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Pos.X = CUR.X + es_argv[0];
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if (Pos.X >= WIDTH) Pos.X = WIDTH - 1;
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Pos.Y = CUR.Y;
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SetConsoleCursorPosition( hConOut, Pos );
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return;
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@ -795,17 +801,17 @@ void InterpretEscSeq( void )
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case 'D': // ESC[#D Moves cursor back # spaces
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if (es_argc == 0) es_argv[es_argc++] = 1; // ESC[D == ESC[1D
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if (es_argc != 1) return;
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Pos.X = Info.dwCursorPosition.X - es_argv[0];
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Pos.X = CUR.X - es_argv[0];
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if (Pos.X < 0) Pos.X = 0;
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Pos.Y = Info.dwCursorPosition.Y;
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Pos.Y = CUR.Y;
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SetConsoleCursorPosition( hConOut, Pos );
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return;
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case 'E': // ESC[#E Moves cursor down # lines, column 1.
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if (es_argc == 0) es_argv[es_argc++] = 1; // ESC[E == ESC[1E
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if (es_argc != 1) return;
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Pos.Y = Info.dwCursorPosition.Y + es_argv[0];
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if (Pos.Y >= Info.dwSize.Y) Pos.Y = Info.dwSize.Y - 1;
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Pos.Y = CUR.Y + es_argv[0];
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if (Pos.Y > BOTTOM) Pos.Y = BOTTOM;
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Pos.X = 0;
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SetConsoleCursorPosition( hConOut, Pos );
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return;
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@ -813,8 +819,8 @@ void InterpretEscSeq( void )
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case 'F': // ESC[#F Moves cursor up # lines, column 1.
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if (es_argc == 0) es_argv[es_argc++] = 1; // ESC[F == ESC[1F
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if (es_argc != 1) return;
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Pos.Y = Info.dwCursorPosition.Y - es_argv[0];
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if (Pos.Y < 0) Pos.Y = 0;
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Pos.Y = CUR.Y - es_argv[0];
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if (Pos.Y < TOP) Pos.Y = TOP;
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Pos.X = 0;
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SetConsoleCursorPosition( hConOut, Pos );
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return;
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@ -824,9 +830,9 @@ void InterpretEscSeq( void )
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if (es_argc == 0) es_argv[es_argc++] = 1; // ESC[G == ESC[1G
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if (es_argc != 1) return;
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Pos.X = es_argv[0] - 1;
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if (Pos.X >= Info.dwSize.X) Pos.X = Info.dwSize.X - 1;
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if (Pos.X >= WIDTH) Pos.X = WIDTH - 1;
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if (Pos.X < 0) Pos.X = 0;
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Pos.Y = Info.dwCursorPosition.Y;
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Pos.Y = CUR.Y;
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SetConsoleCursorPosition( hConOut, Pos );
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return;
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@ -834,8 +840,8 @@ void InterpretEscSeq( void )
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if (es_argc == 0) es_argv[es_argc++] = 1; // ESC[d == ESC[1d
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if (es_argc != 1) return;
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Pos.Y = es_argv[0] - 1;
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if (Pos.Y < 0) Pos.Y = 0;
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if (Pos.Y >= Info.dwSize.Y) Pos.Y = Info.dwSize.Y - 1;
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if (Pos.Y < TOP) Pos.Y = TOP;
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if (Pos.Y > BOTTOM) Pos.Y = BOTTOM;
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SetConsoleCursorPosition( hConOut, Pos );
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return;
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@ -848,23 +854,28 @@ void InterpretEscSeq( void )
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if (es_argc > 2) return;
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Pos.X = es_argv[1] - 1;
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if (Pos.X < 0) Pos.X = 0;
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if (Pos.X >= Info.dwSize.X) Pos.X = Info.dwSize.X - 1;
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if (Pos.X >= WIDTH) Pos.X = WIDTH - 1;
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Pos.Y = es_argv[0] - 1;
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if (Pos.Y < 0) Pos.Y = 0;
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if (Pos.Y >= Info.dwSize.Y) Pos.Y = Info.dwSize.Y - 1;
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if (Pos.Y < TOP) Pos.Y = TOP;
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if (Pos.Y > BOTTOM) Pos.Y = BOTTOM;
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SetConsoleCursorPosition( hConOut, Pos );
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return;
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case 's': // ESC[s Saves cursor position for recall later
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if (es_argc != 0) return;
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get_state();
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pState->SavePos = Info.dwCursorPosition;
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pState->SavePos.X = CUR.X;
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pState->SavePos.Y = CUR.Y - TOP;
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return;
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case 'u': // ESC[u Return to saved cursor position
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if (es_argc != 0) return;
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get_state();
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SetConsoleCursorPosition( hConOut, pState->SavePos );
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Pos.X = pState->SavePos.X;
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Pos.Y = pState->SavePos.Y + TOP;
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if (Pos.X >= WIDTH) Pos.X = WIDTH - 1;
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if (Pos.Y > BOTTOM) Pos.Y = BOTTOM;
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SetConsoleCursorPosition( hConOut, Pos );
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return;
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case 'n': // ESC[#n Device status report
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@ -878,8 +889,7 @@ void InterpretEscSeq( void )
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case 6: // ESC[6n Report cursor position
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{
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TCHAR buf[32];
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wsprintf( buf, L"\33[%d;%dR", Info.dwCursorPosition.Y + 1,
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Info.dwCursorPosition.X + 1 );
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wsprintf( buf, L"\33[%d;%dR", CUR.Y - TOP + 1, CUR.X + 1 );
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SendSequence( buf );
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||||
}
|
||||
return;
|
||||
|
||||
@ -87,7 +87,7 @@
|
||||
add error codes to some message.
|
||||
*/
|
||||
|
||||
#define PDATE L"18 February, 2014"
|
||||
#define PDATE L"20 February, 2014"
|
||||
|
||||
#include "ansicon.h"
|
||||
#include "version.h"
|
||||
|
||||
26
readme.txt
26
readme.txt
@ -147,11 +147,11 @@ Sequences Recognised
|
||||
|
||||
The following escape sequences are recognised.
|
||||
|
||||
\e]0;titleBEL Set (xterm) window's title (and icon, ignored)
|
||||
\e]2;titleBEL Set (xterm) window's title
|
||||
\e[21t Report (xterm) window's title
|
||||
\e[s Save Cursor
|
||||
\e[u Restore Cursor
|
||||
\e]0;titleBEL xterm: Set window's title (and icon, ignored)
|
||||
\e]2;titleBEL xterm: Set window's title
|
||||
\e[21t xterm: Report window's title
|
||||
\e[s ANSI.SYS: Save Cursor Position
|
||||
\e[u ANSI.SYS: Restore Cursor Position
|
||||
\e[#G CHA Cursor Character Absolute
|
||||
\e[#E CNL Cursor Next Line
|
||||
\e[#F CPL Cursor Preceding Line
|
||||
@ -194,6 +194,12 @@ Sequences Recognised
|
||||
iable ANSICON_DEF can be used to change the default colors (same value as
|
||||
'-m'; setting the variable does not change the current colors).
|
||||
|
||||
The first time a program clears the screen ('\e[2J') will actually scroll
|
||||
in a new window (assuming the buffer is bigger than the window, of course).
|
||||
Subsequent clears will then blank the window. However, if the window has
|
||||
scrolled, or the cursor is on the last line of the buffer, it will again
|
||||
scroll in a new window.
|
||||
|
||||
|
||||
Sequences Ignored
|
||||
=================
|
||||
@ -261,7 +267,7 @@ DEC Special Graphics Character Set
|
||||
Limitations
|
||||
===========
|
||||
|
||||
The entire console buffer is used, not just the visible window.
|
||||
Line sequences use the window; column sequences use the buffer.
|
||||
|
||||
There's a conflict with NVIDIA's drivers, requiring the setting of the
|
||||
Environment Variable:
|
||||
@ -277,7 +283,7 @@ Version History
|
||||
|
||||
Legend: + added, - bug-fixed, * changed.
|
||||
|
||||
1.70 - 18 February, 2014:
|
||||
1.70 - 20 February, 2014:
|
||||
- don't hook again if using LoadLibrary or LoadLibraryEx;
|
||||
- update the LoadLibraryEx flags that shouldn't hook;
|
||||
- restore original attributes on detach (for LoadLibrary/FreeLibrary usage);
|
||||
@ -285,12 +291,14 @@ Version History
|
||||
- an installed ansicon.exe will restore current (not default) attributes;
|
||||
- attributes and saved position are local to each console window;
|
||||
- improved recognition of unsupported sequences;
|
||||
- restore cursor to bounds, if size reduced;
|
||||
* inject into a created process by modifying the import descriptor table
|
||||
(-p will use CreateRemoteThread);
|
||||
* log: remove the quotes around the CreateProcess command line;
|
||||
add an underscore in 64-bit addresses to distinguish 8-digit groups;
|
||||
* ANSICON_EXC can exclude entire programs;
|
||||
* switch G1 blank from space (U+0020) to No-Break Space (U+00A0).
|
||||
* switch G1 blank from space (U+0020) to No-Break Space (U+00A0);
|
||||
* use window height, not buffer.
|
||||
|
||||
1.66 - 20 September, 2013:
|
||||
- fix 32-bit process trying to detect 64-bit process.
|
||||
@ -478,4 +486,4 @@ Distribution
|
||||
|
||||
|
||||
==============================
|
||||
Jason Hood, 18 February, 2014.
|
||||
Jason Hood, 20 February, 2014.
|
||||
|
||||
Loading…
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Reference in New Issue
Block a user