[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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[53a6c2a] | 12 | // Last Modified On : Thu Jul 6 18:38:25 2017 |
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| 13 | // Update Count : 251 |
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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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| 18 | extern "C" { |
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[90c3b1c] | 19 | #include <stdio.h> // vfprintf, vfscanf |
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| 20 | #include <stdlib.h> // exit |
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| 21 | #include <stdarg.h> // varargs |
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| 22 | #include <string.h> // strlen |
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[6152c81] | 23 | #include <stdbool.h> // true/false |
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[90c3b1c] | 24 | #include <float.h> // DBL_DIG, LDBL_DIG |
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| 25 | #include <complex.h> // creal, cimag |
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[51b7345] | 26 | } |
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[cb91437] | 27 | #include "assert" |
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[51b7345] | 28 | |
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[53ba273] | 29 | #define IO_MSG "I/O error: " |
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[6ba0659] | 30 | |
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[a493682] | 31 | void ?{}( ofstream & this, void * file, _Bool sepDefault, _Bool sepOnOff, const char * separator, const char * tupleSeparator ) { |
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| 32 | this.file = file; |
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| 33 | this.sepDefault = sepDefault; |
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| 34 | this.sepOnOff = sepOnOff; |
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| 35 | sepSet( &this, separator ); |
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| 36 | sepSetCur( &this, sepGet( &this ) ); |
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| 37 | sepSetTuple( &this, tupleSeparator ); |
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[0583064b] | 38 | } |
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| 39 | |
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[9ebd778] | 40 | // private |
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[53a6c2a] | 41 | _Bool sepPrt( ofstream * os ) { setNL( os, false ); return os->sepOnOff; } |
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[53ba273] | 42 | void sepReset( ofstream * os ) { os->sepOnOff = os->sepDefault; } |
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| 43 | void sepReset( ofstream * os, _Bool reset ) { os->sepDefault = reset; os->sepOnOff = os->sepDefault; } |
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[829c907] | 44 | const char * sepGetCur( ofstream * os ) { return os->sepCur; } |
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| 45 | void sepSetCur( ofstream * os, const char * sepCur ) { os->sepCur = sepCur; } |
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[53a6c2a] | 46 | _Bool getNL( ofstream * os ) { return os->sawNL; } |
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| 47 | void setNL( ofstream * os, _Bool state ) { os->sawNL = state; } |
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[829c907] | 48 | |
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[9ebd778] | 49 | // public |
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[53a6c2a] | 50 | void sepOn( ofstream * os ) { os->sepOnOff = ! getNL( os ); } |
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| 51 | void sepOff( ofstream * os ) { os->sepOnOff = false; } |
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[829c907] | 52 | |
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[53ba273] | 53 | _Bool sepDisable( ofstream *os ) { |
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| 54 | _Bool temp = os->sepDefault; |
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[6152c81] | 55 | os->sepDefault = false; |
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[53ba273] | 56 | sepReset( os ); |
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| 57 | return temp; |
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| 58 | } // sepDisable |
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[6152c81] | 59 | |
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[53ba273] | 60 | _Bool sepEnable( ofstream *os ) { |
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| 61 | _Bool temp = os->sepDefault; |
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[6152c81] | 62 | os->sepDefault = true; |
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[9ebd778] | 63 | if ( os->sepOnOff ) sepReset( os ); // start of line ? |
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[53ba273] | 64 | return temp; |
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| 65 | } // sepEnable |
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[90c3b1c] | 66 | |
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[9ebd778] | 67 | const char * sepGet( ofstream * os ) { return os->separator; } |
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| 68 | void sepSet( ofstream * os, const char * s ) { |
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| 69 | assert( s ); |
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[53a6c2a] | 70 | strncpy( os->separator, s, sepSize - 1 ); |
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| 71 | os->separator[sepSize - 1] = '\0'; |
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[9ebd778] | 72 | } // sepSet |
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| 73 | |
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| 74 | const char * sepGetTuple( ofstream * os ) { return os->tupleSeparator; } |
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| 75 | void sepSetTuple( ofstream * os, const char * s ) { |
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| 76 | assert( s ); |
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[53a6c2a] | 77 | strncpy( os->tupleSeparator, s, sepSize - 1 ); |
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| 78 | os->tupleSeparator[sepSize - 1] = '\0'; |
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[9ebd778] | 79 | } // sepSet |
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| 80 | |
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[6ba0659] | 81 | int fail( ofstream * os ) { |
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[90c3b1c] | 82 | return ferror( (FILE *)(os->file) ); |
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[6ba0659] | 83 | } // fail |
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| 84 | |
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| 85 | int flush( ofstream * os ) { |
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[90c3b1c] | 86 | return fflush( (FILE *)(os->file) ); |
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[6ba0659] | 87 | } // flush |
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| 88 | |
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[90c3b1c] | 89 | void open( ofstream * os, const char * name, const char * mode ) { |
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| 90 | FILE *file = fopen( name, mode ); |
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| 91 | if ( file == 0 ) { // do not change unless successful |
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[53ba273] | 92 | fprintf( stderr, IO_MSG "open output file \"%s\", ", name ); |
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| 93 | perror( 0 ); |
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[6ba0659] | 94 | exit( EXIT_FAILURE ); |
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| 95 | } // if |
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[a493682] | 96 | ?{}( *os, file, true, false, " ", ", " ); |
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[6ba0659] | 97 | } // open |
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| 98 | |
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| 99 | void close( ofstream * os ) { |
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[90c3b1c] | 100 | if ( (FILE *)(os->file) == stdout || (FILE *)(os->file) == stderr ) return; |
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[6ba0659] | 101 | |
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[90c3b1c] | 102 | if ( fclose( (FILE *)(os->file) ) == EOF ) { |
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[6ba0659] | 103 | perror( IO_MSG "close output" ); |
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[356189a] | 104 | } // if |
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[6ba0659] | 105 | } // close |
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| 106 | |
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[90c3b1c] | 107 | ofstream * write( ofstream * os, const char * data, unsigned long int size ) { |
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[6ba0659] | 108 | if ( fail( os ) ) { |
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| 109 | fprintf( stderr, "attempt write I/O on failed stream\n" ); |
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| 110 | exit( EXIT_FAILURE ); |
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| 111 | } // if |
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| 112 | |
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[90c3b1c] | 113 | if ( fwrite( data, 1, size, (FILE *)(os->file) ) != size ) { |
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[6ba0659] | 114 | perror( IO_MSG "write" ); |
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| 115 | exit( EXIT_FAILURE ); |
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[839ccbb] | 116 | } // if |
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[86bd7c1f] | 117 | return os; |
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[839ccbb] | 118 | } // write |
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[51b7345] | 119 | |
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[829c907] | 120 | int fmt( ofstream * os, const char format[], ... ) { |
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[5d125e4] | 121 | va_list args; |
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[829c907] | 122 | va_start( args, format ); |
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| 123 | int len = vfprintf( (FILE *)(os->file), format, args ); |
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[90c3b1c] | 124 | if ( len == EOF ) { |
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| 125 | if ( ferror( (FILE *)(os->file) ) ) { |
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| 126 | fprintf( stderr, "invalid write\n" ); |
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| 127 | exit( EXIT_FAILURE ); |
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| 128 | } // if |
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| 129 | } // if |
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[5d125e4] | 130 | va_end( args ); |
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[b72bad4f] | 131 | |
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| 132 | sepReset( os ); // reset separator |
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[90c3b1c] | 133 | return len; |
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[829c907] | 134 | } // fmt |
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| 135 | |
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[d395012] | 136 | static ofstream soutFile = { (FILE *)(&_IO_2_1_stdout_), true, false, " ", ", " }; |
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[6ba0659] | 137 | ofstream *sout = &soutFile; |
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[d395012] | 138 | static ofstream serrFile = { (FILE *)(&_IO_2_1_stderr_), true, false, " ", ", " }; |
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[6ba0659] | 139 | ofstream *serr = &serrFile; |
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[51b7345] | 140 | |
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[90c3b1c] | 141 | |
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[6ba0659] | 142 | //--------------------------------------- |
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[51b7345] | 143 | |
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| 144 | |
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[6ba0659] | 145 | int fail( ifstream * is ) { |
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[90c3b1c] | 146 | return ferror( (FILE *)(is->file) ); |
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[6ba0659] | 147 | } // fail |
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| 148 | |
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| 149 | int eof( ifstream * is ) { |
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[90c3b1c] | 150 | return feof( (FILE *)(is->file) ); |
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[6ba0659] | 151 | } // eof |
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| 152 | |
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[90c3b1c] | 153 | void open( ifstream * is, const char * name, const char * mode ) { |
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[53a6c2a] | 154 | FILE *file = fopen( name, mode ); |
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| 155 | if ( file == 0 ) { // do not change unless successful |
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[53ba273] | 156 | fprintf( stderr, IO_MSG "open input file \"%s\", ", name ); |
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| 157 | perror( 0 ); |
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[90c3b1c] | 158 | exit( EXIT_FAILURE ); |
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[6ba0659] | 159 | } // if |
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[53a6c2a] | 160 | is->file = file; |
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[90c3b1c] | 161 | } // open |
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[6ba0659] | 162 | |
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[90c3b1c] | 163 | void close( ifstream * is ) { |
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| 164 | if ( (FILE *)(is->file) == stdin ) return; |
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| 165 | |
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| 166 | if ( fclose( (FILE *)(is->file) ) == EOF ) { |
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| 167 | perror( IO_MSG "close input" ); |
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[356189a] | 168 | } // if |
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[90c3b1c] | 169 | } // close |
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| 170 | |
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| 171 | ifstream * read( ifstream * is, char * data, unsigned long int size ) { |
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[6ba0659] | 172 | if ( fail( is ) ) { |
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| 173 | fprintf( stderr, "attempt read I/O on failed stream\n" ); |
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| 174 | exit( EXIT_FAILURE ); |
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| 175 | } // if |
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| 176 | |
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[90c3b1c] | 177 | if ( fread( data, size, 1, (FILE *)(is->file) ) == 0 ) { |
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[6ba0659] | 178 | perror( IO_MSG "read" ); |
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| 179 | exit( EXIT_FAILURE ); |
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| 180 | } // if |
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[86bd7c1f] | 181 | return is; |
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[6ba0659] | 182 | } // read |
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[356189a] | 183 | |
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[6ba0659] | 184 | ifstream *ungetc( ifstream * is, char c ) { |
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| 185 | if ( fail( is ) ) { |
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| 186 | fprintf( stderr, "attempt ungetc I/O on failed stream\n" ); |
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| 187 | exit( EXIT_FAILURE ); |
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| 188 | } // if |
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[51b7345] | 189 | |
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[90c3b1c] | 190 | if ( ungetc( c, (FILE *)(is->file) ) == EOF ) { |
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[6ba0659] | 191 | perror( IO_MSG "ungetc" ); |
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| 192 | exit( EXIT_FAILURE ); |
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| 193 | } // if |
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| 194 | return is; |
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| 195 | } // ungetc |
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[51b7345] | 196 | |
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[829c907] | 197 | int fmt( ifstream * is, const char format[], ... ) { |
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[5d125e4] | 198 | va_list args; |
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[51b7345] | 199 | |
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[829c907] | 200 | va_start( args, format ); |
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| 201 | int len = vfscanf( (FILE *)(is->file), format, args ); |
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[90c3b1c] | 202 | if ( len == EOF ) { |
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| 203 | if ( ferror( (FILE *)(is->file) ) ) { |
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| 204 | fprintf( stderr, "invalid read\n" ); |
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| 205 | exit( EXIT_FAILURE ); |
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| 206 | } // if |
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| 207 | } // if |
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[5d125e4] | 208 | va_end( args ); |
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[90c3b1c] | 209 | return len; |
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[829c907] | 210 | } // fmt |
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[51b7345] | 211 | |
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| 212 | |
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[6ba0659] | 213 | static ifstream sinFile = { (FILE *)(&_IO_2_1_stdin_) }; |
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| 214 | ifstream *sin = &sinFile; |
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[86bd7c1f] | 215 | |
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| 216 | // Local Variables: // |
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| 217 | // tab-width: 4 // |
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| 218 | // End: // |
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