| 1 | /* @(#) pf_io.c 96/12/23 1.12 */\r |
| 2 | /***************************************************************\r |
| 3 | ** I/O subsystem for PForth based on 'C'\r |
| 4 | **\r |
| 5 | ** Author: Phil Burk\r |
| 6 | ** Copyright 1994 3DO, Phil Burk, Larry Polansky, David Rosenboom\r |
| 7 | **\r |
| 8 | ** The pForth software code is dedicated to the public domain,\r |
| 9 | ** and any third party may reproduce, distribute and modify\r |
| 10 | ** the pForth software code or any derivative works thereof\r |
| 11 | ** without any compensation or license. The pForth software\r |
| 12 | ** code is provided on an "as is" basis without any warranty\r |
| 13 | ** of any kind, including, without limitation, the implied\r |
| 14 | ** warranties of merchantability and fitness for a particular\r |
| 15 | ** purpose and their equivalents under the laws of any jurisdiction.\r |
| 16 | **\r |
| 17 | ****************************************************************\r |
| 18 | ** 941004 PLB Extracted IO calls from pforth_main.c\r |
| 19 | ***************************************************************/\r |
| 20 | \r |
| 21 | #include "pf_all.h"\r |
| 22 | \r |
| 23 | \r |
| 24 | /***************************************************************\r |
| 25 | ** Initialize I/O system.\r |
| 26 | */\r |
| 27 | void ioInit( void )\r |
| 28 | {\r |
| 29 | /* System dependant terminal initialization. */\r |
| 30 | sdTerminalInit();\r |
| 31 | }\r |
| 32 | void ioTerm( void )\r |
| 33 | {\r |
| 34 | sdTerminalTerm();\r |
| 35 | }\r |
| 36 | \r |
| 37 | /***************************************************************\r |
| 38 | ** Send single character to output stream.\r |
| 39 | */\r |
| 40 | void ioEmit( char c )\r |
| 41 | {\r |
| 42 | cell_t Result;\r |
| 43 | \r |
| 44 | Result = sdTerminalOut(c);\r |
| 45 | if( Result < 0 ) EXIT(1);\r |
| 46 | \r |
| 47 | if( gCurrentTask )\r |
| 48 | {\r |
| 49 | if(c == '\n')\r |
| 50 | {\r |
| 51 | gCurrentTask->td_OUT = 0;\r |
| 52 | sdTerminalFlush();\r |
| 53 | }\r |
| 54 | else\r |
| 55 | {\r |
| 56 | gCurrentTask->td_OUT++;\r |
| 57 | }\r |
| 58 | }\r |
| 59 | }\r |
| 60 | \r |
| 61 | /***************************************************************\r |
| 62 | ** Send an entire string..\r |
| 63 | */\r |
| 64 | void ioType( const char *s, cell_t n )\r |
| 65 | {\r |
| 66 | cell_t i;\r |
| 67 | \r |
| 68 | for( i=0; i<n; i++)\r |
| 69 | {\r |
| 70 | ioEmit ( *s++ );\r |
| 71 | }\r |
| 72 | }\r |
| 73 | \r |
| 74 | /***************************************************************\r |
| 75 | ** Return single character from input device, always keyboard.\r |
| 76 | */\r |
| 77 | cell_t ioKey( void )\r |
| 78 | {\r |
| 79 | cell_t c;\r |
| 80 | sdEnableInput();\r |
| 81 | c = sdTerminalIn();\r |
| 82 | sdDisableInput();\r |
| 83 | return c;\r |
| 84 | }\r |
| 85 | \r |
| 86 | /**************************************************************\r |
| 87 | ** Receive line from keyboard.\r |
| 88 | ** Return number of characters enterred.\r |
| 89 | */\r |
| 90 | #define SPACE (0x20)\r |
| 91 | #define BACKSPACE (0x08)\r |
| 92 | #define DELETE (0x7F)\r |
| 93 | cell_t ioAccept( char *buffer, cell_t maxChars )\r |
| 94 | {\r |
| 95 | int c;\r |
| 96 | int len;\r |
| 97 | char *p;\r |
| 98 | \r |
| 99 | DBUGX(("ioAccept(0x%x, 0x%x)\n", buffer, len ));\r |
| 100 | \r |
| 101 | sdEnableInput();\r |
| 102 | \r |
| 103 | p = buffer;\r |
| 104 | len = 0;\r |
| 105 | while(len < maxChars)\r |
| 106 | {\r |
| 107 | c = sdTerminalIn();\r |
| 108 | switch(c)\r |
| 109 | {\r |
| 110 | case '\r':\r |
| 111 | case '\n':\r |
| 112 | DBUGX(("EOL\n"));\r |
| 113 | goto gotline;\r |
| 114 | break;\r |
| 115 | \r |
| 116 | case BACKSPACE:\r |
| 117 | case DELETE:\r |
| 118 | if( len > 0 ) /* Don't go beyond beginning of line. */\r |
| 119 | {\r |
| 120 | EMIT(BACKSPACE);\r |
| 121 | EMIT(' ');\r |
| 122 | EMIT(BACKSPACE);\r |
| 123 | p--;\r |
| 124 | len--;\r |
| 125 | }\r |
| 126 | break;\r |
| 127 | \r |
| 128 | default:\r |
| 129 | sdTerminalEcho( (char) c );\r |
| 130 | *p++ = (char) c;\r |
| 131 | len++;\r |
| 132 | break;\r |
| 133 | }\r |
| 134 | \r |
| 135 | }\r |
| 136 | \r |
| 137 | gotline:\r |
| 138 | sdDisableInput();\r |
| 139 | sdTerminalEcho( SPACE );\r |
| 140 | \r |
| 141 | /* NUL terminate line to simplify printing when debugging. */\r |
| 142 | if( len < maxChars ) p[len] = '\0';\r |
| 143 | \r |
| 144 | return len;\r |
| 145 | }\r |
| 146 | \r |
| 147 | #define UNIMPLEMENTED(name) { MSG(name); MSG("is unimplemented!\n"); }\r |
| 148 | \r |
| 149 | \r |
| 150 | /***********************************************************************************/\r |
| 151 | /*********** File I/O **************************************************************/\r |
| 152 | /***********************************************************************************/\r |
| 153 | #ifdef PF_NO_FILEIO\r |
| 154 | \r |
| 155 | /* Provide stubs for standard file I/O */\r |
| 156 | \r |
| 157 | FileStream *PF_STDIN;\r |
| 158 | FileStream *PF_STDOUT;\r |
| 159 | \r |
| 160 | cell_t sdInputChar( FileStream *stream )\r |
| 161 | {\r |
| 162 | UNIMPLEMENTED("sdInputChar");\r |
| 163 | TOUCH(stream);\r |
| 164 | return -1;\r |
| 165 | }\r |
| 166 | \r |
| 167 | FileStream *sdOpenFile( const char *FileName, const char *Mode )\r |
| 168 | {\r |
| 169 | UNIMPLEMENTED("sdOpenFile");\r |
| 170 | TOUCH(FileName);\r |
| 171 | TOUCH(Mode);\r |
| 172 | return NULL;\r |
| 173 | }\r |
| 174 | cell_t sdFlushFile( FileStream * Stream )\r |
| 175 | {\r |
| 176 | TOUCH(Stream);\r |
| 177 | return 0;\r |
| 178 | }\r |
| 179 | cell_t sdReadFile( void *ptr, cell_t Size, int32_t nItems, FileStream * Stream ) \r |
| 180 | { \r |
| 181 | UNIMPLEMENTED("sdReadFile");\r |
| 182 | TOUCH(ptr);\r |
| 183 | TOUCH(Size);\r |
| 184 | TOUCH(nItems);\r |
| 185 | TOUCH(Stream);\r |
| 186 | return 0; \r |
| 187 | }\r |
| 188 | cell_t sdWriteFile( void *ptr, cell_t Size, int32_t nItems, FileStream * Stream )\r |
| 189 | { \r |
| 190 | UNIMPLEMENTED("sdWriteFile");\r |
| 191 | TOUCH(ptr);\r |
| 192 | TOUCH(Size);\r |
| 193 | TOUCH(nItems);\r |
| 194 | TOUCH(Stream);\r |
| 195 | return 0; \r |
| 196 | }\r |
| 197 | cell_t sdSeekFile( FileStream * Stream, cell_t Position, int32_t Mode ) \r |
| 198 | { \r |
| 199 | UNIMPLEMENTED("sdSeekFile");\r |
| 200 | TOUCH(Stream);\r |
| 201 | TOUCH(Position);\r |
| 202 | TOUCH(Mode);\r |
| 203 | return 0; \r |
| 204 | }\r |
| 205 | cell_t sdTellFile( FileStream * Stream ) \r |
| 206 | { \r |
| 207 | UNIMPLEMENTED("sdTellFile");\r |
| 208 | TOUCH(Stream);\r |
| 209 | return 0; \r |
| 210 | }\r |
| 211 | cell_t sdCloseFile( FileStream * Stream ) \r |
| 212 | { \r |
| 213 | UNIMPLEMENTED("sdCloseFile");\r |
| 214 | TOUCH(Stream);\r |
| 215 | return 0; \r |
| 216 | }\r |
| 217 | \r |
| 218 | FileStream *sdDeleteFile( const char *FileName )\r |
| 219 | {\r |
| 220 | UNIMPLEMENTED("sdDeleteFile");\r |
| 221 | TOUCH(FileName);\r |
| 222 | return NULL;\r |
| 223 | }\r |
| 224 | #endif\r |
| 225 | \r |