[86bd7c1f] | 1 | // |
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| 2 | // Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo |
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| 3 | // |
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| 4 | // The contents of this file are covered under the licence agreement in the |
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| 5 | // file "LICENCE" distributed with Cforall. |
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| 6 | // |
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[356189a] | 7 | // fstream.c -- |
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[86bd7c1f] | 8 | // |
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[90c3b1c] | 9 | // Author : Peter A. Buhr |
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[86bd7c1f] | 10 | // Created On : Wed May 27 17:56:53 2015 |
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[5d125e4] | 11 | // Last Modified By : Peter A. Buhr |
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[09687aa] | 12 | // Last Modified On : Thu Dec 7 08:35:01 2017 |
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| 13 | // Update Count : 270 |
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[86bd7c1f] | 14 | // |
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| 15 | |
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[d3b7937] | 16 | #include "fstream" |
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[51b7345] | 17 | |
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[90c3b1c] | 18 | #include <stdio.h> // vfprintf, vfscanf |
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| 19 | #include <stdlib.h> // exit |
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| 20 | #include <stdarg.h> // varargs |
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| 21 | #include <string.h> // strlen |
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[6152c81] | 22 | #include <stdbool.h> // true/false |
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[90c3b1c] | 23 | #include <float.h> // DBL_DIG, LDBL_DIG |
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| 24 | #include <complex.h> // creal, cimag |
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[91c389a] | 25 | #include <assert.h> |
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[51b7345] | 26 | |
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[53ba273] | 27 | #define IO_MSG "I/O error: " |
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[6ba0659] | 28 | |
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[09687aa] | 29 | void ?{}( ofstream & os, void * file, _Bool sepDefault, _Bool sepOnOff, const char * separator, const char * tupleSeparator ) { |
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| 30 | os.file = file; |
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| 31 | os.sepDefault = sepDefault; |
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| 32 | os.sepOnOff = sepOnOff; |
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| 33 | sepSet( os, separator ); |
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| 34 | sepSetCur( os, sepGet( os ) ); |
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| 35 | sepSetTuple( os, tupleSeparator ); |
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[0583064b] | 36 | } |
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| 37 | |
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[9ebd778] | 38 | // private |
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[09687aa] | 39 | _Bool sepPrt( ofstream & os ) { setNL( os, false ); return os.sepOnOff; } |
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| 40 | void sepReset( ofstream & os ) { os.sepOnOff = os.sepDefault; } |
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| 41 | void sepReset( ofstream & os, _Bool reset ) { os.sepDefault = reset; os.sepOnOff = os.sepDefault; } |
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| 42 | const char * sepGetCur( ofstream & os ) { return os.sepCur; } |
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| 43 | void sepSetCur( ofstream & os, const char * sepCur ) { os.sepCur = sepCur; } |
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| 44 | _Bool getNL( ofstream & os ) { return os.sawNL; } |
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| 45 | void setNL( ofstream & os, _Bool state ) { os.sawNL = state; } |
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[829c907] | 46 | |
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[9ebd778] | 47 | // public |
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[09687aa] | 48 | void ?{}( ofstream & os ) {} |
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[829c907] | 49 | |
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[09687aa] | 50 | void ?{}( ofstream & os, const char * name, const char * mode ) { |
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| 51 | open( os, name, mode ); |
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| 52 | } |
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| 53 | |
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| 54 | void sepOn( ofstream & os ) { os.sepOnOff = ! getNL( os ); } |
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| 55 | void sepOff( ofstream & os ) { os.sepOnOff = false; } |
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| 56 | |
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| 57 | _Bool sepDisable( ofstream & os ) { |
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| 58 | _Bool temp = os.sepDefault; |
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| 59 | os.sepDefault = false; |
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[53ba273] | 60 | sepReset( os ); |
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| 61 | return temp; |
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| 62 | } // sepDisable |
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[6152c81] | 63 | |
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[09687aa] | 64 | _Bool sepEnable( ofstream & os ) { |
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| 65 | _Bool temp = os.sepDefault; |
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| 66 | os.sepDefault = true; |
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| 67 | if ( os.sepOnOff ) sepReset( os ); // start of line ? |
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[53ba273] | 68 | return temp; |
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| 69 | } // sepEnable |
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[90c3b1c] | 70 | |
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[09687aa] | 71 | const char * sepGet( ofstream & os ) { return os.separator; } |
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| 72 | void sepSet( ofstream & os, const char * s ) { |
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[9ebd778] | 73 | assert( s ); |
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[09687aa] | 74 | strncpy( os.separator, s, sepSize - 1 ); |
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| 75 | os.separator[sepSize - 1] = '\0'; |
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[9ebd778] | 76 | } // sepSet |
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| 77 | |
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[09687aa] | 78 | const char * sepGetTuple( ofstream & os ) { return os.tupleSeparator; } |
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| 79 | void sepSetTuple( ofstream & os, const char * s ) { |
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[9ebd778] | 80 | assert( s ); |
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[09687aa] | 81 | strncpy( os.tupleSeparator, s, sepSize - 1 ); |
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| 82 | os.tupleSeparator[sepSize - 1] = '\0'; |
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[9ebd778] | 83 | } // sepSet |
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| 84 | |
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[09687aa] | 85 | int fail( ofstream & os ) { |
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| 86 | return ferror( (FILE *)(os.file) ); |
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[6ba0659] | 87 | } // fail |
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| 88 | |
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[09687aa] | 89 | int flush( ofstream & os ) { |
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| 90 | return fflush( (FILE *)(os.file) ); |
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[6ba0659] | 91 | } // flush |
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| 92 | |
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[09687aa] | 93 | void open( ofstream & os, const char * name, const char * mode ) { |
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[90c3b1c] | 94 | FILE *file = fopen( name, mode ); |
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| 95 | if ( file == 0 ) { // do not change unless successful |
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[53ba273] | 96 | fprintf( stderr, IO_MSG "open output file \"%s\", ", name ); |
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| 97 | perror( 0 ); |
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[6ba0659] | 98 | exit( EXIT_FAILURE ); |
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| 99 | } // if |
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[09687aa] | 100 | (os){ file, true, false, " ", ", " }; |
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[6ba0659] | 101 | } // open |
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| 102 | |
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[09687aa] | 103 | void close( ofstream & os ) { |
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| 104 | if ( (FILE *)(os.file) == stdout || (FILE *)(os.file) == stderr ) return; |
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[6ba0659] | 105 | |
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[09687aa] | 106 | if ( fclose( (FILE *)(os.file) ) == EOF ) { |
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[6ba0659] | 107 | perror( IO_MSG "close output" ); |
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[356189a] | 108 | } // if |
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[6ba0659] | 109 | } // close |
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| 110 | |
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[09687aa] | 111 | ofstream & write( ofstream & os, const char * data, unsigned long int size ) { |
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[6ba0659] | 112 | if ( fail( os ) ) { |
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| 113 | fprintf( stderr, "attempt write I/O on failed stream\n" ); |
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| 114 | exit( EXIT_FAILURE ); |
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| 115 | } // if |
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| 116 | |
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[09687aa] | 117 | if ( fwrite( data, 1, size, (FILE *)(os.file) ) != size ) { |
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[6ba0659] | 118 | perror( IO_MSG "write" ); |
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| 119 | exit( EXIT_FAILURE ); |
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[839ccbb] | 120 | } // if |
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[86bd7c1f] | 121 | return os; |
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[839ccbb] | 122 | } // write |
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[51b7345] | 123 | |
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[09687aa] | 124 | int fmt( ofstream & os, const char format[], ... ) { |
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[5d125e4] | 125 | va_list args; |
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[829c907] | 126 | va_start( args, format ); |
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[09687aa] | 127 | int len = vfprintf( (FILE *)(os.file), format, args ); |
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[90c3b1c] | 128 | if ( len == EOF ) { |
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[09687aa] | 129 | if ( ferror( (FILE *)(os.file) ) ) { |
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[90c3b1c] | 130 | fprintf( stderr, "invalid write\n" ); |
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| 131 | exit( EXIT_FAILURE ); |
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| 132 | } // if |
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| 133 | } // if |
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[5d125e4] | 134 | va_end( args ); |
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[b72bad4f] | 135 | |
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| 136 | sepReset( os ); // reset separator |
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[90c3b1c] | 137 | return len; |
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[829c907] | 138 | } // fmt |
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| 139 | |
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[d395012] | 140 | static ofstream soutFile = { (FILE *)(&_IO_2_1_stdout_), true, false, " ", ", " }; |
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[09687aa] | 141 | ofstream & sout = soutFile; |
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[d395012] | 142 | static ofstream serrFile = { (FILE *)(&_IO_2_1_stderr_), true, false, " ", ", " }; |
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[09687aa] | 143 | ofstream & serr = serrFile; |
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[51b7345] | 144 | |
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[90c3b1c] | 145 | |
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[6ba0659] | 146 | //--------------------------------------- |
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[51b7345] | 147 | |
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[09687aa] | 148 | // private |
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| 149 | void ?{}( ifstream & is, void * file ) { |
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| 150 | is.file = file; |
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| 151 | } |
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| 152 | |
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| 153 | // public |
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| 154 | void ?{}( ifstream & is ) {} |
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[51b7345] | 155 | |
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[09687aa] | 156 | void ?{}( ifstream & is, const char * name ) { |
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| 157 | open( is, name ); |
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| 158 | } |
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| 159 | |
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| 160 | int fail( ifstream & is ) { |
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| 161 | return ferror( (FILE *)(is.file) ); |
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[6ba0659] | 162 | } // fail |
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| 163 | |
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[09687aa] | 164 | int eof( ifstream & is ) { |
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| 165 | return feof( (FILE *)(is.file) ); |
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[6ba0659] | 166 | } // eof |
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| 167 | |
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[09687aa] | 168 | void open( ifstream & is, const char * name ) { |
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| 169 | FILE *file = fopen( name, "r" ); |
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[53a6c2a] | 170 | if ( file == 0 ) { // do not change unless successful |
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[53ba273] | 171 | fprintf( stderr, IO_MSG "open input file \"%s\", ", name ); |
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| 172 | perror( 0 ); |
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[90c3b1c] | 173 | exit( EXIT_FAILURE ); |
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[6ba0659] | 174 | } // if |
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[09687aa] | 175 | is.file = file; |
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[90c3b1c] | 176 | } // open |
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[6ba0659] | 177 | |
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[09687aa] | 178 | void close( ifstream & is ) { |
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| 179 | if ( (FILE *)(is.file) == stdin ) return; |
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[90c3b1c] | 180 | |
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[09687aa] | 181 | if ( fclose( (FILE *)(is.file) ) == EOF ) { |
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[90c3b1c] | 182 | perror( IO_MSG "close input" ); |
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[356189a] | 183 | } // if |
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[90c3b1c] | 184 | } // close |
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| 185 | |
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[09687aa] | 186 | ifstream & read( ifstream & is, char * data, unsigned long int size ) { |
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[6ba0659] | 187 | if ( fail( is ) ) { |
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| 188 | fprintf( stderr, "attempt read I/O on failed stream\n" ); |
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| 189 | exit( EXIT_FAILURE ); |
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| 190 | } // if |
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| 191 | |
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[09687aa] | 192 | if ( fread( data, size, 1, (FILE *)(is.file) ) == 0 ) { |
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[6ba0659] | 193 | perror( IO_MSG "read" ); |
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| 194 | exit( EXIT_FAILURE ); |
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| 195 | } // if |
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[86bd7c1f] | 196 | return is; |
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[6ba0659] | 197 | } // read |
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[356189a] | 198 | |
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[09687aa] | 199 | ifstream &ungetc( ifstream & is, char c ) { |
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[6ba0659] | 200 | if ( fail( is ) ) { |
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| 201 | fprintf( stderr, "attempt ungetc I/O on failed stream\n" ); |
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| 202 | exit( EXIT_FAILURE ); |
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| 203 | } // if |
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[51b7345] | 204 | |
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[09687aa] | 205 | if ( ungetc( c, (FILE *)(is.file) ) == EOF ) { |
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[6ba0659] | 206 | perror( IO_MSG "ungetc" ); |
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| 207 | exit( EXIT_FAILURE ); |
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| 208 | } // if |
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| 209 | return is; |
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| 210 | } // ungetc |
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[51b7345] | 211 | |
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[09687aa] | 212 | int fmt( ifstream & is, const char format[], ... ) { |
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[5d125e4] | 213 | va_list args; |
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[51b7345] | 214 | |
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[829c907] | 215 | va_start( args, format ); |
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[09687aa] | 216 | int len = vfscanf( (FILE *)(is.file), format, args ); |
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[90c3b1c] | 217 | if ( len == EOF ) { |
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[09687aa] | 218 | if ( ferror( (FILE *)(is.file) ) ) { |
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[90c3b1c] | 219 | fprintf( stderr, "invalid read\n" ); |
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| 220 | exit( EXIT_FAILURE ); |
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| 221 | } // if |
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| 222 | } // if |
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[5d125e4] | 223 | va_end( args ); |
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[90c3b1c] | 224 | return len; |
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[829c907] | 225 | } // fmt |
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[51b7345] | 226 | |
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| 227 | |
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[6ba0659] | 228 | static ifstream sinFile = { (FILE *)(&_IO_2_1_stdin_) }; |
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[09687aa] | 229 | ifstream & sin = sinFile; |
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[86bd7c1f] | 230 | |
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| 231 | // Local Variables: // |
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| 232 | // tab-width: 4 // |
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| 233 | // End: // |
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