1 /* @(#) pf_io.c 96/12/23 1.12 */
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2 /***************************************************************
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3 ** I/O subsystem for PForth based on 'C'
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6 ** Copyright 1994 3DO, Phil Burk, Larry Polansky, David Rosenboom
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8 ** The pForth software code is dedicated to the public domain,
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9 ** and any third party may reproduce, distribute and modify
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10 ** the pForth software code or any derivative works thereof
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11 ** without any compensation or license. The pForth software
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12 ** code is provided on an "as is" basis without any warranty
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13 ** of any kind, including, without limitation, the implied
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14 ** warranties of merchantability and fitness for a particular
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15 ** purpose and their equivalents under the laws of any jurisdiction.
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17 ****************************************************************
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18 ** 941004 PLB Extracted IO calls from pforth_main.c
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19 ***************************************************************/
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24 /***************************************************************
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25 ** Initialize I/O system.
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29 /* System dependant terminal initialization. */
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37 /***************************************************************
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38 ** Send single character to output stream.
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40 void ioEmit( char c )
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44 Result = sdTerminalOut(c);
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45 if( Result < 0 ) EXIT(1);
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51 gCurrentTask->td_OUT = 0;
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56 gCurrentTask->td_OUT++;
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61 /***************************************************************
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62 ** Send an entire string..
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64 void ioType( const char *s, cell_t n )
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74 /***************************************************************
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75 ** Return single character from input device, always keyboard.
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77 cell_t ioKey( void )
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86 /**************************************************************
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87 ** Receive line from keyboard.
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88 ** Return number of characters enterred.
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90 #define SPACE (0x20)
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91 #define BACKSPACE (0x08)
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92 #define DELETE (0x7F)
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93 cell_t ioAccept( char *buffer, cell_t maxChars )
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99 DBUGX(("ioAccept(0x%x, 0x%x)\n", buffer, len ));
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105 while(len < maxChars)
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107 c = sdTerminalIn();
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118 if( len > 0 ) /* Don't go beyond beginning of line. */
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129 sdTerminalEcho( (char) c );
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139 sdTerminalEcho( SPACE );
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141 /* NUL terminate line to simplify printing when debugging. */
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142 if( len < maxChars ) p[len] = '\0';
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147 #define UNIMPLEMENTED(name) { MSG(name); MSG("is unimplemented!\n"); }
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150 /***********************************************************************************/
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151 /*********** File I/O **************************************************************/
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152 /***********************************************************************************/
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153 #ifdef PF_NO_FILEIO
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155 /* Provide stubs for standard file I/O */
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157 FileStream *PF_STDIN;
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158 FileStream *PF_STDOUT;
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160 cell_t sdInputChar( FileStream *stream )
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162 UNIMPLEMENTED("sdInputChar");
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167 FileStream *sdOpenFile( const char *FileName, const char *Mode )
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169 UNIMPLEMENTED("sdOpenFile");
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174 cell_t sdFlushFile( FileStream * Stream )
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179 cell_t sdReadFile( void *ptr, cell_t Size, int32_t nItems, FileStream * Stream )
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181 UNIMPLEMENTED("sdReadFile");
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188 cell_t sdWriteFile( void *ptr, cell_t Size, int32_t nItems, FileStream * Stream )
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190 UNIMPLEMENTED("sdWriteFile");
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197 cell_t sdSeekFile( FileStream * Stream, cell_t Position, int32_t Mode )
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199 UNIMPLEMENTED("sdSeekFile");
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205 cell_t sdTellFile( FileStream * Stream )
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207 UNIMPLEMENTED("sdTellFile");
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211 cell_t sdCloseFile( FileStream * Stream )
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213 UNIMPLEMENTED("sdCloseFile");
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218 FileStream *sdDeleteFile( const char *FileName )
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220 UNIMPLEMENTED("sdDeleteFile");
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