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8e9db35f PB |
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 | ** | |
1f99f95d S |
10 | ** Permission to use, copy, modify, and/or distribute this |
11 | ** software for any purpose with or without fee is hereby granted. | |
12 | ** | |
13 | ** THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL | |
14 | ** WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED | |
15 | ** WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL | |
16 | ** THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR | |
17 | ** CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING | |
18 | ** FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF | |
19 | ** CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
20 | ** OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
8e9db35f PB |
21 | ** |
22 | ***************************************************************/ | |
23 | ||
24 | #include "../pf_all.h" | |
25 | ||
26 | #if defined(WIN32) || defined(__NT__) | |
27 | ||
28 | #include <windows.h> | |
29 | ||
30 | #define ASCII_ESCAPE (0x1B) | |
31 | ||
32 | static HANDLE sConsoleHandle = INVALID_HANDLE_VALUE; | |
33 | static int sIsConsoleValid = FALSE; | |
34 | ||
35 | typedef enum ConsoleState_e | |
36 | { | |
37 | SDCONSOLE_STATE_IDLE = 0, | |
38 | SDCONSOLE_STATE_GOT_ESCAPE, | |
39 | SDCONSOLE_STATE_GOT_BRACKET | |
40 | ||
41 | } ConsoleState; | |
42 | ||
43 | static int sConsoleState = SDCONSOLE_STATE_IDLE; | |
44 | static int sParam1 = 0; | |
45 | static CONSOLE_SCREEN_BUFFER_INFO sScreenInfo; | |
46 | ||
47 | /******************************************************************/ | |
48 | static void sdConsoleEmit( char c ) | |
49 | { | |
50 | /* Write a WCHAR in case we have compiled with Unicode support. | |
51 | * Otherwise we will see '?' printed.*/ | |
52 | WCHAR wc = (WCHAR) c; | |
53 | DWORD count; | |
54 | if( sIsConsoleValid ) | |
55 | { | |
56 | WriteConsoleW(sConsoleHandle, &wc, 1, &count, NULL ); | |
57 | } | |
58 | else | |
59 | { | |
60 | /* This will get called if we are redirecting to a file.*/ | |
61 | WriteFile(sConsoleHandle, &c, 1, &count, NULL ); | |
62 | } | |
63 | } | |
64 | ||
65 | /******************************************************************/ | |
66 | static void sdClearScreen( void ) | |
67 | { | |
68 | if( GetConsoleScreenBufferInfo( sConsoleHandle, &sScreenInfo ) ) | |
69 | { | |
70 | COORD XY; | |
71 | int numNeeded; | |
72 | DWORD count; | |
73 | XY.X = 0; | |
74 | XY.Y = sScreenInfo.srWindow.Top; | |
75 | numNeeded = sScreenInfo.dwSize.X * (sScreenInfo.srWindow.Bottom - sScreenInfo.srWindow.Top + 1); | |
76 | FillConsoleOutputCharacter( | |
77 | sConsoleHandle, ' ', numNeeded, XY, &count ); | |
78 | SetConsoleCursorPosition( sConsoleHandle, XY ); | |
79 | } | |
80 | } | |
81 | ||
82 | /******************************************************************/ | |
83 | static void sdEraseEOL( void ) | |
84 | { | |
85 | if( GetConsoleScreenBufferInfo( sConsoleHandle, &sScreenInfo ) ) | |
86 | { | |
87 | COORD savedXY; | |
88 | int numNeeded; | |
89 | DWORD count; | |
90 | savedXY.X = sScreenInfo.dwCursorPosition.X; | |
91 | savedXY.Y = sScreenInfo.dwCursorPosition.Y; | |
92 | numNeeded = sScreenInfo.dwSize.X - savedXY.X; | |
93 | FillConsoleOutputCharacter( | |
94 | sConsoleHandle, ' ', numNeeded, savedXY, &count ); | |
95 | } | |
96 | } | |
97 | ||
98 | /******************************************************************/ | |
99 | static void sdCursorBack( int dx ) | |
100 | { | |
101 | if( GetConsoleScreenBufferInfo( sConsoleHandle, &sScreenInfo ) ) | |
102 | { | |
103 | COORD XY; | |
104 | XY.X = sScreenInfo.dwCursorPosition.X; | |
105 | XY.Y = sScreenInfo.dwCursorPosition.Y; | |
106 | XY.X -= dx; | |
107 | if( XY.X < 0 ) XY.X = 0; | |
108 | SetConsoleCursorPosition( sConsoleHandle, XY ); | |
109 | } | |
110 | } | |
111 | /******************************************************************/ | |
112 | static void sdCursorForward( int dx ) | |
113 | { | |
114 | if( GetConsoleScreenBufferInfo( sConsoleHandle, &sScreenInfo ) ) | |
115 | { | |
116 | COORD XY; | |
117 | int width = sScreenInfo.dwSize.X; | |
118 | XY.X = sScreenInfo.dwCursorPosition.X; | |
119 | XY.Y = sScreenInfo.dwCursorPosition.Y; | |
120 | XY.X += dx; | |
121 | if( XY.X > width ) XY.X = width; | |
122 | SetConsoleCursorPosition( sConsoleHandle, XY ); | |
123 | } | |
124 | } | |
125 | ||
126 | /******************************************************************/ | |
127 | /* Use console mode I/O so that KEY and ?TERMINAL will work. | |
128 | * Parse ANSI escape sequences and call the appropriate cursor | |
129 | * control functions. | |
130 | */ | |
131 | int sdTerminalOut( char c ) | |
132 | { | |
133 | switch( sConsoleState ) | |
134 | { | |
135 | case SDCONSOLE_STATE_IDLE: | |
136 | switch( c ) | |
137 | { | |
138 | case ASCII_ESCAPE: | |
139 | sConsoleState = SDCONSOLE_STATE_GOT_ESCAPE; | |
140 | break; | |
141 | default: | |
142 | sdConsoleEmit( c ); | |
143 | } | |
144 | break; | |
145 | ||
146 | case SDCONSOLE_STATE_GOT_ESCAPE: | |
147 | switch( c ) | |
148 | { | |
149 | case '[': | |
150 | sConsoleState = SDCONSOLE_STATE_GOT_BRACKET; | |
151 | sParam1 = 0; | |
152 | break; | |
153 | default: | |
154 | sConsoleState = SDCONSOLE_STATE_IDLE; | |
155 | sdConsoleEmit( c ); | |
156 | } | |
157 | break; | |
158 | ||
159 | case SDCONSOLE_STATE_GOT_BRACKET: | |
160 | if( (c >= '0') && (c <= '9') ) | |
161 | { | |
162 | sParam1 = (sParam1 * 10) + (c - '0'); | |
163 | } | |
164 | else | |
165 | { | |
166 | sConsoleState = SDCONSOLE_STATE_IDLE; | |
167 | if( c == 'K') | |
168 | { | |
169 | sdEraseEOL(); | |
170 | } | |
171 | else if( c == 'D' ) | |
172 | { | |
173 | sdCursorBack( sParam1 ); | |
174 | } | |
175 | else if( c == 'C' ) | |
176 | { | |
177 | sdCursorForward( sParam1 ); | |
178 | } | |
179 | else if( (c == 'J') && (sParam1 == 2) ) | |
180 | { | |
181 | sdClearScreen(); | |
182 | } | |
183 | } | |
184 | break; | |
185 | } | |
186 | return 0; | |
187 | } | |
188 | ||
189 | /* Needed cuz _getch() does not echo. */ | |
190 | int sdTerminalEcho( char c ) | |
191 | { | |
192 | sdConsoleEmit((char)(c)); | |
193 | return 0; | |
194 | } | |
195 | ||
196 | int sdTerminalIn( void ) | |
197 | { | |
198 | return _getch(); | |
199 | } | |
200 | ||
201 | int sdQueryTerminal( void ) | |
202 | { | |
203 | return _kbhit(); | |
204 | } | |
205 | ||
206 | int sdTerminalFlush( void ) | |
207 | { | |
208 | #ifdef PF_NO_FILEIO | |
209 | return -1; | |
210 | #else | |
211 | return fflush(PF_STDOUT); | |
212 | #endif | |
213 | } | |
214 | ||
215 | void sdTerminalInit( void ) | |
216 | { | |
217 | DWORD mode = 0; | |
218 | sConsoleHandle = GetStdHandle( STD_OUTPUT_HANDLE ); | |
219 | if( GetConsoleMode( sConsoleHandle, &mode ) ) | |
220 | { | |
221 | /*printf("GetConsoleMode() mode is 0x%08X\n", mode );*/ | |
222 | sIsConsoleValid = TRUE; | |
223 | } | |
224 | else | |
225 | { | |
226 | /*printf("GetConsoleMode() failed\n", mode );*/ | |
227 | sIsConsoleValid = FALSE; | |
228 | } | |
229 | } | |
230 | ||
231 | void sdTerminalTerm( void ) | |
232 | { | |
233 | } | |
234 | #endif |