[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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[ba0d2ea] | 12 | // Last Modified On : Thu Jul 29 22:34:10 2021 |
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| 13 | // Update Count : 454 |
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[86bd7c1f] | 14 | // |
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| 15 | |
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[f451177] | 16 | #include "fstream.hfa" // also includes iostream.hfa |
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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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[b431515] | 21 | #include <string.h> // strncpy, strerror |
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[91c389a] | 22 | #include <assert.h> |
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[8a25be9] | 23 | #include <errno.h> // errno |
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[51b7345] | 24 | |
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[8d321f9] | 25 | // *********************************** ofstream *********************************** |
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[65240bb] | 26 | |
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| 27 | |
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[53ba273] | 28 | #define IO_MSG "I/O error: " |
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[6ba0659] | 29 | |
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[5cb2b8c] | 30 | void ?{}( ofstream & os, void * file ) { |
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[6c5d92f] | 31 | os.file$ = file; |
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| 32 | os.sepDefault$ = true; |
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| 33 | os.sepOnOff$ = false; |
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| 34 | os.nlOnOff$ = true; |
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| 35 | os.prt$ = false; |
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| 36 | os.sawNL$ = false; |
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| 37 | os.acquired$ = false; |
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| 38 | sepSetCur$( os, sepGet( os ) ); |
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[5cb2b8c] | 39 | sepSet( os, " " ); |
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| 40 | sepSetTuple( os, ", " ); |
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[65240bb] | 41 | } // ?{} |
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[0583064b] | 42 | |
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[9ebd778] | 43 | // private |
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[6c5d92f] | 44 | bool sepPrt$( ofstream & os ) { setNL$( os, false ); return os.sepOnOff$; } |
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| 45 | void sepReset$( ofstream & os ) { os.sepOnOff$ = os.sepDefault$; } |
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| 46 | void sepReset$( ofstream & os, bool reset ) { os.sepDefault$ = reset; os.sepOnOff$ = os.sepDefault$; } |
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| 47 | const char * sepGetCur$( ofstream & os ) { return os.sepCur$; } |
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| 48 | void sepSetCur$( ofstream & os, const char sepCur[] ) { os.sepCur$ = sepCur; } |
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| 49 | bool getNL$( ofstream & os ) { return os.sawNL$; } |
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| 50 | void setNL$( ofstream & os, bool state ) { os.sawNL$ = state; } |
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| 51 | bool getANL$( ofstream & os ) { return os.nlOnOff$; } |
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| 52 | bool getPrt$( ofstream & os ) { return os.prt$; } |
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| 53 | void setPrt$( ofstream & os, bool state ) { os.prt$ = state; } |
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[829c907] | 54 | |
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[9ebd778] | 55 | // public |
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[6c5d92f] | 56 | void ?{}( ofstream & os ) { os.file$ = 0p; } |
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[829c907] | 57 | |
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[e3fea42] | 58 | void ?{}( ofstream & os, const char name[], const char mode[] ) { |
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[09687aa] | 59 | open( os, name, mode ); |
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[65240bb] | 60 | } // ?{} |
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| 61 | |
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[e3fea42] | 62 | void ?{}( ofstream & os, const char name[] ) { |
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[8da74119] | 63 | open( os, name, "w" ); |
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[65240bb] | 64 | } // ?{} |
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[09687aa] | 65 | |
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[4cae032] | 66 | void ^?{}( ofstream & os ) { |
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| 67 | close( os ); |
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| 68 | } // ^?{} |
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| 69 | |
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[6c5d92f] | 70 | void sepOn( ofstream & os ) { os.sepOnOff$ = ! getNL$( os ); } |
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| 71 | void sepOff( ofstream & os ) { os.sepOnOff$ = false; } |
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[09687aa] | 72 | |
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[93c2e0a] | 73 | bool sepDisable( ofstream & os ) { |
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[6c5d92f] | 74 | bool temp = os.sepDefault$; |
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| 75 | os.sepDefault$ = false; |
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| 76 | sepReset$( os ); |
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[53ba273] | 77 | return temp; |
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| 78 | } // sepDisable |
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[6152c81] | 79 | |
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[93c2e0a] | 80 | bool sepEnable( ofstream & os ) { |
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[6c5d92f] | 81 | bool temp = os.sepDefault$; |
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| 82 | os.sepDefault$ = true; |
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| 83 | if ( os.sepOnOff$ ) sepReset$( os ); // start of line ? |
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[53ba273] | 84 | return temp; |
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| 85 | } // sepEnable |
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[90c3b1c] | 86 | |
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[6c5d92f] | 87 | void nlOn( ofstream & os ) { os.nlOnOff$ = true; } |
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| 88 | void nlOff( ofstream & os ) { os.nlOnOff$ = false; } |
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[200fcb3] | 89 | |
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[6c5d92f] | 90 | const char * sepGet( ofstream & os ) { return os.separator$; } |
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[e3fea42] | 91 | void sepSet( ofstream & os, const char s[] ) { |
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[9ebd778] | 92 | assert( s ); |
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[b431515] | 93 | strncpy( os.separator$, s, ofstream_sepSize - 1 ); |
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| 94 | os.separator$[ofstream_sepSize - 1] = '\0'; |
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[9ebd778] | 95 | } // sepSet |
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| 96 | |
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[6c5d92f] | 97 | const char * sepGetTuple( ofstream & os ) { return os.tupleSeparator$; } |
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[e3fea42] | 98 | void sepSetTuple( ofstream & os, const char s[] ) { |
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[9ebd778] | 99 | assert( s ); |
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[b431515] | 100 | strncpy( os.tupleSeparator$, s, ofstream_sepSize - 1 ); |
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| 101 | os.tupleSeparator$[ofstream_sepSize - 1] = '\0'; |
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[9ebd778] | 102 | } // sepSet |
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| 103 | |
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[65240bb] | 104 | void ends( ofstream & os ) { |
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[6c5d92f] | 105 | if ( getANL$( os ) ) nl( os ); |
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| 106 | else setPrt$( os, false ); // turn off |
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[65240bb] | 107 | if ( &os == &exit ) exit( EXIT_FAILURE ); |
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| 108 | if ( &os == &abort ) abort(); |
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[6c5d92f] | 109 | if ( os.acquired$ ) { os.acquired$ = false; release( os ); } |
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[65240bb] | 110 | } // ends |
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| 111 | |
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[b431515] | 112 | bool fail( ofstream & os ) { |
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[6c5d92f] | 113 | return os.file$ == 0 || ferror( (FILE *)(os.file$) ); |
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[6ba0659] | 114 | } // fail |
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| 115 | |
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[00e9be9] | 116 | void clear( ofstream & os ) { |
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| 117 | clearerr( (FILE *)(os.file$) ); |
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| 118 | } // clear |
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| 119 | |
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[09687aa] | 120 | int flush( ofstream & os ) { |
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[6c5d92f] | 121 | return fflush( (FILE *)(os.file$) ); |
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[6ba0659] | 122 | } // flush |
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| 123 | |
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[e3fea42] | 124 | void open( ofstream & os, const char name[], const char mode[] ) { |
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[5cb2b8c] | 125 | FILE * file = fopen( name, mode ); |
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[93c2e0a] | 126 | #ifdef __CFA_DEBUG__ |
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[d1a9ff5] | 127 | if ( file == 0p ) { |
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[8d321f9] | 128 | throw (Open_Failure){ os }; |
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| 129 | // abort | IO_MSG "open output file \"" | name | "\"" | nl | strerror( errno ); |
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[93c2e0a] | 130 | } // if |
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| 131 | #endif // __CFA_DEBUG__ |
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[5cb2b8c] | 132 | (os){ file }; |
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[6ba0659] | 133 | } // open |
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| 134 | |
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[e3fea42] | 135 | void open( ofstream & os, const char name[] ) { |
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[8da74119] | 136 | open( os, name, "w" ); |
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| 137 | } // open |
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| 138 | |
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[09687aa] | 139 | void close( ofstream & os ) { |
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[6c5d92f] | 140 | if ( (FILE *)(os.file$) == 0p ) return; |
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| 141 | if ( (FILE *)(os.file$) == (FILE *)stdout || (FILE *)(os.file$) == (FILE *)stderr ) return; |
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[6ba0659] | 142 | |
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[6c5d92f] | 143 | if ( fclose( (FILE *)(os.file$) ) == EOF ) { |
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[ba0d2ea] | 144 | throw (Close_Failure){ os }; |
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| 145 | // abort | IO_MSG "close output" | nl | strerror( errno ); |
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[356189a] | 146 | } // if |
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[6c5d92f] | 147 | os.file$ = 0p; |
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[6ba0659] | 148 | } // close |
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| 149 | |
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[e3fea42] | 150 | ofstream & write( ofstream & os, const char data[], size_t size ) { |
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[6ba0659] | 151 | if ( fail( os ) ) { |
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[ba0d2ea] | 152 | throw (Write_Failure){ os }; |
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| 153 | // abort | IO_MSG "attempt write I/O on failed stream"; |
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[6ba0659] | 154 | } // if |
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| 155 | |
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[6c5d92f] | 156 | if ( fwrite( data, 1, size, (FILE *)(os.file$) ) != size ) { |
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[ba0d2ea] | 157 | throw (Write_Failure){ os }; |
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| 158 | // abort | IO_MSG "write" | nl | strerror( errno ); |
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[839ccbb] | 159 | } // if |
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[86bd7c1f] | 160 | return os; |
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[839ccbb] | 161 | } // write |
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[51b7345] | 162 | |
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[09687aa] | 163 | int fmt( ofstream & os, const char format[], ... ) { |
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[5d125e4] | 164 | va_list args; |
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[829c907] | 165 | va_start( args, format ); |
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[6c5d92f] | 166 | int len = vfprintf( (FILE *)(os.file$), format, args ); |
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[90c3b1c] | 167 | if ( len == EOF ) { |
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[6c5d92f] | 168 | if ( ferror( (FILE *)(os.file$) ) ) { |
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[ff2a33e] | 169 | abort | IO_MSG "invalid write"; |
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[90c3b1c] | 170 | } // if |
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| 171 | } // if |
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[5d125e4] | 172 | va_end( args ); |
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[b72bad4f] | 173 | |
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[6c5d92f] | 174 | setPrt$( os, true ); // called in output cascade |
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| 175 | sepReset$( os ); // reset separator |
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[90c3b1c] | 176 | return len; |
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[829c907] | 177 | } // fmt |
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| 178 | |
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[e474cf09] | 179 | inline void acquire( ofstream & os ) { |
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[6c5d92f] | 180 | lock( os.lock$ ); |
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| 181 | if ( ! os.acquired$ ) os.acquired$ = true; |
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| 182 | else unlock( os.lock$ ); |
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[e474cf09] | 183 | } // acquire |
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| 184 | |
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| 185 | inline void release( ofstream & os ) { |
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[6c5d92f] | 186 | unlock( os.lock$ ); |
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[e474cf09] | 187 | } // release |
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| 188 | |
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[6c5d92f] | 189 | void ?{}( osacquire & acq, ofstream & os ) { &acq.os = &os; lock( os.lock$ ); } |
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[e474cf09] | 190 | void ^?{}( osacquire & acq ) { release( acq.os ); } |
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| 191 | |
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[fd8f88f] | 192 | static ofstream soutFile = { (FILE *)stdout }; |
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[a87d40b] | 193 | ofstream & sout = soutFile, & stdout = soutFile; |
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[fd8f88f] | 194 | static ofstream serrFile = { (FILE *)stderr }; |
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[a87d40b] | 195 | ofstream & serr = serrFile, & stderr = serrFile; |
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[51b7345] | 196 | |
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[e474cf09] | 197 | static ofstream lsoutFile = { (FILE *)stdout }; |
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| 198 | ofstream & lsout = lsoutFile; |
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| 199 | |
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[fd8f88f] | 200 | static ofstream exitFile = { (FILE *)stdout }; |
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[65240bb] | 201 | ofstream & exit = exitFile; |
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[fd8f88f] | 202 | static ofstream abortFile = { (FILE *)stderr }; |
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[65240bb] | 203 | ofstream & abort = abortFile; |
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[5cb2b8c] | 204 | |
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[f451177] | 205 | ofstream & nl( ofstream & os ) { |
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| 206 | nl$( os ); // call basic_ostream nl |
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| 207 | flush( os ); |
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| 208 | return os; |
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| 209 | // (ofstream &)(os | '\n'); |
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| 210 | // setPrt$( os, false ); // turn off |
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| 211 | // setNL$( os, true ); |
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| 212 | // flush( os ); |
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| 213 | // return sepOff( os ); // prepare for next line |
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| 214 | } // nl |
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[90c3b1c] | 215 | |
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[00e9be9] | 216 | |
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[8d321f9] | 217 | // *********************************** ifstream *********************************** |
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[65240bb] | 218 | |
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[51b7345] | 219 | |
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[09687aa] | 220 | // private |
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| 221 | void ?{}( ifstream & is, void * file ) { |
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[6c5d92f] | 222 | is.file$ = file; |
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| 223 | is.nlOnOff$ = false; |
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| 224 | is.acquired$ = false; |
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[65240bb] | 225 | } // ?{} |
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[09687aa] | 226 | |
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| 227 | // public |
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[6c5d92f] | 228 | void ?{}( ifstream & is ) { is.file$ = 0p; } |
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[51b7345] | 229 | |
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[e3fea42] | 230 | void ?{}( ifstream & is, const char name[], const char mode[] ) { |
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[8da74119] | 231 | open( is, name, mode ); |
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[65240bb] | 232 | } // ?{} |
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| 233 | |
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[e3fea42] | 234 | void ?{}( ifstream & is, const char name[] ) { |
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[8da74119] | 235 | open( is, name, "r" ); |
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[65240bb] | 236 | } // ?{} |
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[09687aa] | 237 | |
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[4cae032] | 238 | void ^?{}( ifstream & is ) { |
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| 239 | close( is ); |
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| 240 | } // ^?{} |
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| 241 | |
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[6c5d92f] | 242 | void nlOn( ifstream & os ) { os.nlOnOff$ = true; } |
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| 243 | void nlOff( ifstream & os ) { os.nlOnOff$ = false; } |
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| 244 | bool getANL( ifstream & os ) { return os.nlOnOff$; } |
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[0efb269] | 245 | |
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[b431515] | 246 | bool fail( ifstream & is ) { |
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[6c5d92f] | 247 | return is.file$ == 0p || ferror( (FILE *)(is.file$) ); |
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[6ba0659] | 248 | } // fail |
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| 249 | |
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[00e9be9] | 250 | void clear( ifstream & is ) { |
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| 251 | clearerr( (FILE *)(is.file$) ); |
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| 252 | } // clear |
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| 253 | |
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[e474cf09] | 254 | void ends( ifstream & is ) { |
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[6c5d92f] | 255 | if ( is.acquired$ ) { is.acquired$ = false; release( is ); } |
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[e474cf09] | 256 | } // ends |
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| 257 | |
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[00e9be9] | 258 | bool eof( ifstream & is ) { |
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[6c5d92f] | 259 | return feof( (FILE *)(is.file$) ); |
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[6ba0659] | 260 | } // eof |
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| 261 | |
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[e3fea42] | 262 | void open( ifstream & is, const char name[], const char mode[] ) { |
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[8a25be9] | 263 | FILE * file = fopen( name, mode ); |
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[93c2e0a] | 264 | #ifdef __CFA_DEBUG__ |
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[d1a9ff5] | 265 | if ( file == 0p ) { |
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[8d321f9] | 266 | throw (Open_Failure){ is }; |
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| 267 | // abort | IO_MSG "open input file \"" | name | "\"" | nl | strerror( errno ); |
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[93c2e0a] | 268 | } // if |
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| 269 | #endif // __CFA_DEBUG__ |
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[6c5d92f] | 270 | is.file$ = file; |
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[90c3b1c] | 271 | } // open |
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[6ba0659] | 272 | |
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[e3fea42] | 273 | void open( ifstream & is, const char name[] ) { |
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[8da74119] | 274 | open( is, name, "r" ); |
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| 275 | } // open |
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| 276 | |
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[09687aa] | 277 | void close( ifstream & is ) { |
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[6c5d92f] | 278 | if ( (FILE *)(is.file$) == 0p ) return; |
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| 279 | if ( (FILE *)(is.file$) == (FILE *)stdin ) return; |
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[90c3b1c] | 280 | |
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[6c5d92f] | 281 | if ( fclose( (FILE *)(is.file$) ) == EOF ) { |
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[ba0d2ea] | 282 | throw (Close_Failure){ is }; |
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| 283 | // abort | IO_MSG "close input" | nl | strerror( errno ); |
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[356189a] | 284 | } // if |
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[6c5d92f] | 285 | is.file$ = 0p; |
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[90c3b1c] | 286 | } // close |
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| 287 | |
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[00e9be9] | 288 | ifstream & read( ifstream & is, char data[], size_t size ) { |
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[6ba0659] | 289 | if ( fail( is ) ) { |
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[ba0d2ea] | 290 | throw (Read_Failure){ is }; |
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| 291 | // abort | IO_MSG "attempt read I/O on failed stream"; |
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[6ba0659] | 292 | } // if |
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| 293 | |
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[6c5d92f] | 294 | if ( fread( data, size, 1, (FILE *)(is.file$) ) == 0 ) { |
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[ba0d2ea] | 295 | throw (Read_Failure){ is }; |
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| 296 | // abort | IO_MSG "read" | nl | strerror( errno ); |
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[6ba0659] | 297 | } // if |
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[86bd7c1f] | 298 | return is; |
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[6ba0659] | 299 | } // read |
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[356189a] | 300 | |
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[09687aa] | 301 | ifstream &ungetc( ifstream & is, char c ) { |
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[6ba0659] | 302 | if ( fail( is ) ) { |
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[ff2a33e] | 303 | abort | IO_MSG "attempt ungetc I/O on failed stream"; |
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[6ba0659] | 304 | } // if |
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[51b7345] | 305 | |
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[6c5d92f] | 306 | if ( ungetc( c, (FILE *)(is.file$) ) == EOF ) { |
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[ff2a33e] | 307 | abort | IO_MSG "ungetc" | nl | strerror( errno ); |
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[6ba0659] | 308 | } // if |
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| 309 | return is; |
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| 310 | } // ungetc |
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[51b7345] | 311 | |
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[09687aa] | 312 | int fmt( ifstream & is, const char format[], ... ) { |
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[5d125e4] | 313 | va_list args; |
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[51b7345] | 314 | |
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[829c907] | 315 | va_start( args, format ); |
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[6c5d92f] | 316 | int len = vfscanf( (FILE *)(is.file$), format, args ); |
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[90c3b1c] | 317 | if ( len == EOF ) { |
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[6c5d92f] | 318 | if ( ferror( (FILE *)(is.file$) ) ) { |
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[ff2a33e] | 319 | abort | IO_MSG "invalid read"; |
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[90c3b1c] | 320 | } // if |
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| 321 | } // if |
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[5d125e4] | 322 | va_end( args ); |
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[90c3b1c] | 323 | return len; |
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[829c907] | 324 | } // fmt |
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[51b7345] | 325 | |
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[e474cf09] | 326 | inline void acquire( ifstream & is ) { |
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[6c5d92f] | 327 | lock( is.lock$ ); |
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| 328 | if ( ! is.acquired$ ) is.acquired$ = true; |
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| 329 | else unlock( is.lock$ ); |
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[e474cf09] | 330 | } // acquire |
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| 331 | |
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| 332 | inline void release( ifstream & is ) { |
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[6c5d92f] | 333 | unlock( is.lock$ ); |
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[e474cf09] | 334 | } // release |
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| 335 | |
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[6c5d92f] | 336 | void ?{}( isacquire & acq, ifstream & is ) { &acq.is = &is; lock( is.lock$ ); } |
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[e474cf09] | 337 | void ^?{}( isacquire & acq ) { release( acq.is ); } |
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| 338 | |
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[fd8f88f] | 339 | static ifstream sinFile = { (FILE *)stdin }; |
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[a87d40b] | 340 | ifstream & sin = sinFile, & stdin = sinFile; |
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[86bd7c1f] | 341 | |
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[91e52be] | 342 | |
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[8d321f9] | 343 | // *********************************** exceptions *********************************** |
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[91e52be] | 344 | |
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| 345 | |
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[ba0d2ea] | 346 | static vtable(Open_Failure) Open_Failure_vt; |
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[a5a6a1a8] | 347 | |
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| 348 | // exception I/O constructors |
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[8d321f9] | 349 | void ?{}( Open_Failure & this, ofstream & ostream ) { |
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[ba0d2ea] | 350 | this.virtual_table = &Open_Failure_vt; |
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[91e52be] | 351 | this.ostream = &ostream; |
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[8d321f9] | 352 | this.tag = 1; |
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[a5a6a1a8] | 353 | } // ?{} |
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| 354 | |
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[8d321f9] | 355 | void ?{}( Open_Failure & this, ifstream & istream ) { |
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[ba0d2ea] | 356 | this.virtual_table = &Open_Failure_vt; |
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[91e52be] | 357 | this.istream = &istream; |
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[8d321f9] | 358 | this.tag = 0; |
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[a5a6a1a8] | 359 | } // ?{} |
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| 360 | |
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| 361 | |
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[ba0d2ea] | 362 | static vtable(Close_Failure) Close_Failure_vt; |
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| 363 | |
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| 364 | // exception I/O constructors |
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| 365 | void ?{}( Close_Failure & this, ofstream & ostream ) { |
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| 366 | this.virtual_table = &Close_Failure_vt; |
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| 367 | this.ostream = &ostream; |
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| 368 | this.tag = 1; |
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| 369 | } // ?{} |
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| 370 | |
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| 371 | void ?{}( Close_Failure & this, ifstream & istream ) { |
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| 372 | this.virtual_table = &Close_Failure_vt; |
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| 373 | this.istream = &istream; |
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| 374 | this.tag = 0; |
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| 375 | } // ?{} |
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| 376 | |
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| 377 | |
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| 378 | static vtable(Write_Failure) Write_Failure_vt; |
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| 379 | |
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| 380 | // exception I/O constructors |
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| 381 | void ?{}( Write_Failure & this, ofstream & ostream ) { |
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| 382 | this.virtual_table = &Write_Failure_vt; |
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| 383 | this.ostream = &ostream; |
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| 384 | this.tag = 1; |
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| 385 | } // ?{} |
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| 386 | |
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| 387 | void ?{}( Write_Failure & this, ifstream & istream ) { |
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| 388 | this.virtual_table = &Write_Failure_vt; |
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| 389 | this.istream = &istream; |
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| 390 | this.tag = 0; |
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| 391 | } // ?{} |
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| 392 | |
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| 393 | |
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| 394 | static vtable(Read_Failure) Read_Failure_vt; |
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| 395 | |
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| 396 | // exception I/O constructors |
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| 397 | void ?{}( Read_Failure & this, ofstream & ostream ) { |
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| 398 | this.virtual_table = &Read_Failure_vt; |
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| 399 | this.ostream = &ostream; |
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| 400 | this.tag = 1; |
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| 401 | } // ?{} |
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| 402 | |
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| 403 | void ?{}( Read_Failure & this, ifstream & istream ) { |
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| 404 | this.virtual_table = &Read_Failure_vt; |
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| 405 | this.istream = &istream; |
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| 406 | this.tag = 0; |
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| 407 | } // ?{} |
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| 408 | |
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| 409 | // void throwOpen_Failure( ofstream & ostream ) { |
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| 410 | // Open_Failure exc = { ostream }; |
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| 411 | // } |
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| 412 | |
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| 413 | // void throwOpen_Failure( ifstream & istream ) { |
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| 414 | // Open_Failure exc = { istream }; |
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| 415 | // } |
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[91e52be] | 416 | |
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[86bd7c1f] | 417 | // Local Variables: // |
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| 418 | // tab-width: 4 // |
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| 419 | // End: // |
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