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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 | ** | |
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 |