| 1 | /* $Id$ */ |
| 2 | /*************************************************************** |
| 3 | ** I/O subsystem for PForth for WIN32 systems. |
| 4 | ** |
| 5 | ** Use Windows Console so we can add the ANSI console commands needed to support HISTORY |
| 6 | ** |
| 7 | ** Author: Phil Burk |
| 8 | ** Copyright 1994 3DO, Phil Burk, Larry Polansky, David Rosenboom |
| 9 | ** |
| 10 | ** The pForth software code is dedicated to the public domain, |
| 11 | ** and any third party may reproduce, distribute and modify |
| 12 | ** the pForth software code or any derivative works thereof |
| 13 | ** without any compensation or license. The pForth software |
| 14 | ** code is provided on an "as is" basis without any warranty |
| 15 | ** of any kind, including, without limitation, the implied |
| 16 | ** warranties of merchantability and fitness for a particular |
| 17 | ** purpose and their equivalents under the laws of any jurisdiction. |
| 18 | ** |
| 19 | ***************************************************************/ |
| 20 | |
| 21 | #include "../pf_all.h" |
| 22 | |
| 23 | #if defined(WIN32) || defined(__NT__) |
| 24 | |
| 25 | #include <windows.h> |
| 26 | |
| 27 | #define ASCII_ESCAPE (0x1B) |
| 28 | |
| 29 | static HANDLE sConsoleHandle = INVALID_HANDLE_VALUE; |
| 30 | static int sIsConsoleValid = FALSE; |
| 31 | |
| 32 | typedef enum ConsoleState_e |
| 33 | { |
| 34 | SDCONSOLE_STATE_IDLE = 0, |
| 35 | SDCONSOLE_STATE_GOT_ESCAPE, |
| 36 | SDCONSOLE_STATE_GOT_BRACKET |
| 37 | |
| 38 | } ConsoleState; |
| 39 | |
| 40 | static int sConsoleState = SDCONSOLE_STATE_IDLE; |
| 41 | static int sParam1 = 0; |
| 42 | static CONSOLE_SCREEN_BUFFER_INFO sScreenInfo; |
| 43 | |
| 44 | /******************************************************************/ |
| 45 | static void sdConsoleEmit( char c ) |
| 46 | { |
| 47 | /* Write a WCHAR in case we have compiled with Unicode support. |
| 48 | * Otherwise we will see '?' printed.*/ |
| 49 | WCHAR wc = (WCHAR) c; |
| 50 | DWORD count; |
| 51 | if( sIsConsoleValid ) |
| 52 | { |
| 53 | WriteConsoleW(sConsoleHandle, &wc, 1, &count, NULL ); |
| 54 | } |
| 55 | else |
| 56 | { |
| 57 | /* This will get called if we are redirecting to a file.*/ |
| 58 | WriteFile(sConsoleHandle, &c, 1, &count, NULL ); |
| 59 | } |
| 60 | } |
| 61 | |
| 62 | /******************************************************************/ |
| 63 | static void sdClearScreen( void ) |
| 64 | { |
| 65 | if( GetConsoleScreenBufferInfo( sConsoleHandle, &sScreenInfo ) ) |
| 66 | { |
| 67 | COORD XY; |
| 68 | int numNeeded; |
| 69 | DWORD count; |
| 70 | XY.X = 0; |
| 71 | XY.Y = sScreenInfo.srWindow.Top; |
| 72 | numNeeded = sScreenInfo.dwSize.X * (sScreenInfo.srWindow.Bottom - sScreenInfo.srWindow.Top + 1); |
| 73 | FillConsoleOutputCharacter( |
| 74 | sConsoleHandle, ' ', numNeeded, XY, &count ); |
| 75 | SetConsoleCursorPosition( sConsoleHandle, XY ); |
| 76 | } |
| 77 | } |
| 78 | |
| 79 | /******************************************************************/ |
| 80 | static void sdEraseEOL( void ) |
| 81 | { |
| 82 | if( GetConsoleScreenBufferInfo( sConsoleHandle, &sScreenInfo ) ) |
| 83 | { |
| 84 | COORD savedXY; |
| 85 | int numNeeded; |
| 86 | DWORD count; |
| 87 | savedXY.X = sScreenInfo.dwCursorPosition.X; |
| 88 | savedXY.Y = sScreenInfo.dwCursorPosition.Y; |
| 89 | numNeeded = sScreenInfo.dwSize.X - savedXY.X; |
| 90 | FillConsoleOutputCharacter( |
| 91 | sConsoleHandle, ' ', numNeeded, savedXY, &count ); |
| 92 | } |
| 93 | } |
| 94 | |
| 95 | /******************************************************************/ |
| 96 | static void sdCursorBack( int dx ) |
| 97 | { |
| 98 | if( GetConsoleScreenBufferInfo( sConsoleHandle, &sScreenInfo ) ) |
| 99 | { |
| 100 | COORD XY; |
| 101 | XY.X = sScreenInfo.dwCursorPosition.X; |
| 102 | XY.Y = sScreenInfo.dwCursorPosition.Y; |
| 103 | XY.X -= dx; |
| 104 | if( XY.X < 0 ) XY.X = 0; |
| 105 | SetConsoleCursorPosition( sConsoleHandle, XY ); |
| 106 | } |
| 107 | } |
| 108 | /******************************************************************/ |
| 109 | static void sdCursorForward( int dx ) |
| 110 | { |
| 111 | if( GetConsoleScreenBufferInfo( sConsoleHandle, &sScreenInfo ) ) |
| 112 | { |
| 113 | COORD XY; |
| 114 | int width = sScreenInfo.dwSize.X; |
| 115 | XY.X = sScreenInfo.dwCursorPosition.X; |
| 116 | XY.Y = sScreenInfo.dwCursorPosition.Y; |
| 117 | XY.X += dx; |
| 118 | if( XY.X > width ) XY.X = width; |
| 119 | SetConsoleCursorPosition( sConsoleHandle, XY ); |
| 120 | } |
| 121 | } |
| 122 | |
| 123 | /******************************************************************/ |
| 124 | /* Use console mode I/O so that KEY and ?TERMINAL will work. |
| 125 | * Parse ANSI escape sequences and call the appropriate cursor |
| 126 | * control functions. |
| 127 | */ |
| 128 | int sdTerminalOut( char c ) |
| 129 | { |
| 130 | switch( sConsoleState ) |
| 131 | { |
| 132 | case SDCONSOLE_STATE_IDLE: |
| 133 | switch( c ) |
| 134 | { |
| 135 | case ASCII_ESCAPE: |
| 136 | sConsoleState = SDCONSOLE_STATE_GOT_ESCAPE; |
| 137 | break; |
| 138 | default: |
| 139 | sdConsoleEmit( c ); |
| 140 | } |
| 141 | break; |
| 142 | |
| 143 | case SDCONSOLE_STATE_GOT_ESCAPE: |
| 144 | switch( c ) |
| 145 | { |
| 146 | case '[': |
| 147 | sConsoleState = SDCONSOLE_STATE_GOT_BRACKET; |
| 148 | sParam1 = 0; |
| 149 | break; |
| 150 | default: |
| 151 | sConsoleState = SDCONSOLE_STATE_IDLE; |
| 152 | sdConsoleEmit( c ); |
| 153 | } |
| 154 | break; |
| 155 | |
| 156 | case SDCONSOLE_STATE_GOT_BRACKET: |
| 157 | if( (c >= '0') && (c <= '9') ) |
| 158 | { |
| 159 | sParam1 = (sParam1 * 10) + (c - '0'); |
| 160 | } |
| 161 | else |
| 162 | { |
| 163 | sConsoleState = SDCONSOLE_STATE_IDLE; |
| 164 | if( c == 'K') |
| 165 | { |
| 166 | sdEraseEOL(); |
| 167 | } |
| 168 | else if( c == 'D' ) |
| 169 | { |
| 170 | sdCursorBack( sParam1 ); |
| 171 | } |
| 172 | else if( c == 'C' ) |
| 173 | { |
| 174 | sdCursorForward( sParam1 ); |
| 175 | } |
| 176 | else if( (c == 'J') && (sParam1 == 2) ) |
| 177 | { |
| 178 | sdClearScreen(); |
| 179 | } |
| 180 | } |
| 181 | break; |
| 182 | } |
| 183 | return 0; |
| 184 | } |
| 185 | |
| 186 | /* Needed cuz _getch() does not echo. */ |
| 187 | int sdTerminalEcho( char c ) |
| 188 | { |
| 189 | sdConsoleEmit((char)(c)); |
| 190 | return 0; |
| 191 | } |
| 192 | |
| 193 | int sdTerminalIn( void ) |
| 194 | { |
| 195 | return _getch(); |
| 196 | } |
| 197 | |
| 198 | int sdQueryTerminal( void ) |
| 199 | { |
| 200 | return _kbhit(); |
| 201 | } |
| 202 | |
| 203 | int sdTerminalFlush( void ) |
| 204 | { |
| 205 | #ifdef PF_NO_FILEIO |
| 206 | return -1; |
| 207 | #else |
| 208 | return fflush(PF_STDOUT); |
| 209 | #endif |
| 210 | } |
| 211 | |
| 212 | void sdTerminalInit( void ) |
| 213 | { |
| 214 | DWORD mode = 0; |
| 215 | sConsoleHandle = GetStdHandle( STD_OUTPUT_HANDLE ); |
| 216 | if( GetConsoleMode( sConsoleHandle, &mode ) ) |
| 217 | { |
| 218 | /*printf("GetConsoleMode() mode is 0x%08X\n", mode );*/ |
| 219 | sIsConsoleValid = TRUE; |
| 220 | } |
| 221 | else |
| 222 | { |
| 223 | /*printf("GetConsoleMode() failed\n", mode );*/ |
| 224 | sIsConsoleValid = FALSE; |
| 225 | } |
| 226 | } |
| 227 | |
| 228 | void sdTerminalTerm( void ) |
| 229 | { |
| 230 | } |
| 231 | #endif |