[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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[7a1b7e6] | 12 | // Last Modified On : Sat Apr 9 14:55:54 2022 |
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| 13 | // Update Count : 515 |
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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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[7ce2483] | 30 | // private |
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| 31 | void ?{}( ofstream & os, void * file ) with( os ) { |
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[3bf3b6b] | 32 | file$ = file; |
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| 33 | sepDefault$ = true; |
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| 34 | sepOnOff$ = false; |
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| 35 | nlOnOff$ = true; |
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| 36 | prt$ = false; |
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| 37 | sawNL$ = false; |
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[6c5d92f] | 38 | sepSetCur$( os, sepGet( os ) ); |
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[5cb2b8c] | 39 | sepSet( os, " " ); |
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| 40 | sepSetTuple( os, ", " ); |
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[65240bb] | 41 | } // ?{} |
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[0583064b] | 42 | |
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[7ce2483] | 43 | inline bool sepPrt$( ofstream & os ) { setNL$( os, false ); return os.sepOnOff$; } |
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| 44 | inline void sepReset$( ofstream & os ) { os.sepOnOff$ = os.sepDefault$; } |
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| 45 | inline void sepReset$( ofstream & os, bool reset ) { os.sepDefault$ = reset; os.sepOnOff$ = os.sepDefault$; } |
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| 46 | inline const char * sepGetCur$( ofstream & os ) { return os.sepCur$; } |
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| 47 | inline void sepSetCur$( ofstream & os, const char sepCur[] ) { os.sepCur$ = sepCur; } |
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| 48 | inline bool getNL$( ofstream & os ) { return os.sawNL$; } |
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| 49 | inline void setNL$( ofstream & os, bool state ) { os.sawNL$ = state; } |
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| 50 | inline bool getANL$( ofstream & os ) { return os.nlOnOff$; } |
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| 51 | inline bool getPrt$( ofstream & os ) { return os.prt$; } |
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| 52 | inline void setPrt$( ofstream & os, bool state ) { os.prt$ = state; } |
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| 53 | |
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[c52f033] | 54 | inline void lock( ofstream & os ) with( os ) { lock( os.lock$ ); } |
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[7ce2483] | 55 | inline void unlock( ofstream & os ) { unlock( os.lock$ ); } |
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[829c907] | 56 | |
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[9ebd778] | 57 | // public |
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[6c5d92f] | 58 | void ?{}( ofstream & os ) { os.file$ = 0p; } |
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[7ce2483] | 59 | void ?{}( ofstream & os, const char name[], const char mode[] ) { open( os, name, mode ); } |
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| 60 | void ?{}( ofstream & os, const char name[] ) { open( os, name, "w" ); } |
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| 61 | void ^?{}( ofstream & os ) { close( os ); } |
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[4cae032] | 62 | |
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[6c5d92f] | 63 | void sepOn( ofstream & os ) { os.sepOnOff$ = ! getNL$( os ); } |
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| 64 | void sepOff( ofstream & os ) { os.sepOnOff$ = false; } |
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[09687aa] | 65 | |
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[93c2e0a] | 66 | bool sepDisable( ofstream & os ) { |
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[6c5d92f] | 67 | bool temp = os.sepDefault$; |
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| 68 | os.sepDefault$ = false; |
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| 69 | sepReset$( os ); |
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[53ba273] | 70 | return temp; |
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| 71 | } // sepDisable |
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[6152c81] | 72 | |
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[93c2e0a] | 73 | bool sepEnable( ofstream & os ) { |
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[6c5d92f] | 74 | bool temp = os.sepDefault$; |
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| 75 | os.sepDefault$ = true; |
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| 76 | if ( os.sepOnOff$ ) sepReset$( os ); // start of line ? |
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[53ba273] | 77 | return temp; |
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| 78 | } // sepEnable |
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[90c3b1c] | 79 | |
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[6c5d92f] | 80 | void nlOn( ofstream & os ) { os.nlOnOff$ = true; } |
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| 81 | void nlOff( ofstream & os ) { os.nlOnOff$ = false; } |
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[200fcb3] | 82 | |
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[6c5d92f] | 83 | const char * sepGet( ofstream & os ) { return os.separator$; } |
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[e3fea42] | 84 | void sepSet( ofstream & os, const char s[] ) { |
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[9ebd778] | 85 | assert( s ); |
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[b431515] | 86 | strncpy( os.separator$, s, ofstream_sepSize - 1 ); |
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| 87 | os.separator$[ofstream_sepSize - 1] = '\0'; |
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[9ebd778] | 88 | } // sepSet |
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| 89 | |
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[6c5d92f] | 90 | const char * sepGetTuple( ofstream & os ) { return os.tupleSeparator$; } |
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[e3fea42] | 91 | void sepSetTuple( ofstream & os, const char s[] ) { |
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[9ebd778] | 92 | assert( s ); |
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[b431515] | 93 | strncpy( os.tupleSeparator$, s, ofstream_sepSize - 1 ); |
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| 94 | os.tupleSeparator$[ofstream_sepSize - 1] = '\0'; |
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[9ebd778] | 95 | } // sepSet |
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| 96 | |
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[65240bb] | 97 | void ends( ofstream & os ) { |
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[6c5d92f] | 98 | if ( getANL$( os ) ) nl( os ); |
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| 99 | else setPrt$( os, false ); // turn off |
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[65240bb] | 100 | if ( &os == &exit ) exit( EXIT_FAILURE ); |
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| 101 | if ( &os == &abort ) abort(); |
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| 102 | } // ends |
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| 103 | |
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[7ce2483] | 104 | bool fail( ofstream & os ) { return os.file$ == 0 || ferror( (FILE *)(os.file$) ); } |
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| 105 | void clear( ofstream & os ) { clearerr( (FILE *)(os.file$) ); } |
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| 106 | int flush( ofstream & os ) { return fflush( (FILE *)(os.file$) ); } |
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[6ba0659] | 107 | |
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[e3fea42] | 108 | void open( ofstream & os, const char name[], const char mode[] ) { |
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[8dcb832] | 109 | FILE * file; |
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| 110 | for ( cnt; 10 ) { |
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| 111 | errno = 0; |
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| 112 | file = fopen( name, mode ); |
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| 113 | if ( file != 0p || errno != EINTR ) break; // timer interrupt ? |
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| 114 | if ( cnt == 9 ) abort( "ofstream open EINTR spinning exceeded" ); |
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| 115 | } // for |
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[d1a9ff5] | 116 | if ( file == 0p ) { |
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[8d321f9] | 117 | throw (Open_Failure){ os }; |
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| 118 | // abort | IO_MSG "open output file \"" | name | "\"" | nl | strerror( errno ); |
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[93c2e0a] | 119 | } // if |
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[3bf3b6b] | 120 | (os){ file }; // initialize |
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[6ba0659] | 121 | } // open |
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| 122 | |
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[7ce2483] | 123 | void open( ofstream & os, const char name[] ) { open( os, name, "w" ); } |
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[8da74119] | 124 | |
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[7ce2483] | 125 | void close( ofstream & os ) with( os ) { |
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[3bf3b6b] | 126 | if ( (FILE *)(file$) == 0p ) return; |
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| 127 | if ( (FILE *)(file$) == (FILE *)stdout || (FILE *)(file$) == (FILE *)stderr ) return; |
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[6ba0659] | 128 | |
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[8dcb832] | 129 | int ret; |
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| 130 | for ( cnt; 10 ) { |
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| 131 | errno = 0; |
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| 132 | ret = fclose( (FILE *)(file$) ); |
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| 133 | if ( ret != EOF || errno != EINTR ) break; // timer interrupt ? |
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| 134 | if ( cnt == 9 ) abort( "ofstream open EINTR spinning exceeded" ); |
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| 135 | } // for |
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| 136 | if ( ret == EOF ) { |
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[ba0d2ea] | 137 | throw (Close_Failure){ os }; |
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| 138 | // abort | IO_MSG "close output" | nl | strerror( errno ); |
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[356189a] | 139 | } // if |
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[7ce2483] | 140 | file$ = 0p; // safety after close |
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[6ba0659] | 141 | } // close |
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| 142 | |
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[e3fea42] | 143 | ofstream & write( ofstream & os, const char data[], size_t size ) { |
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[6ba0659] | 144 | if ( fail( os ) ) { |
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[ba0d2ea] | 145 | throw (Write_Failure){ os }; |
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| 146 | // abort | IO_MSG "attempt write I/O on failed stream"; |
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[6ba0659] | 147 | } // if |
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| 148 | |
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[6c5d92f] | 149 | if ( fwrite( data, 1, size, (FILE *)(os.file$) ) != size ) { |
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[ba0d2ea] | 150 | throw (Write_Failure){ os }; |
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| 151 | // abort | IO_MSG "write" | nl | strerror( errno ); |
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[839ccbb] | 152 | } // if |
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[86bd7c1f] | 153 | return os; |
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[839ccbb] | 154 | } // write |
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[51b7345] | 155 | |
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[09687aa] | 156 | int fmt( ofstream & os, const char format[], ... ) { |
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[5d125e4] | 157 | va_list args; |
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[829c907] | 158 | va_start( args, format ); |
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[8dcb832] | 159 | |
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| 160 | int len; |
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| 161 | for ( cnt; 10 ) { |
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| 162 | errno = 0; |
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[7a1b7e6] | 163 | disable_interrupts(); |
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[8dcb832] | 164 | len = vfprintf( (FILE *)(os.file$), format, args ); |
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[7a1b7e6] | 165 | enable_interrupts(); |
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[8dcb832] | 166 | if ( len != EOF || errno != EINTR ) break; // timer interrupt ? |
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| 167 | if ( cnt == 9 ) abort( "ofstream fmt EINTR spinning exceeded" ); |
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| 168 | } // for |
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[90c3b1c] | 169 | if ( len == EOF ) { |
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[6c5d92f] | 170 | if ( ferror( (FILE *)(os.file$) ) ) { |
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[ff2a33e] | 171 | abort | IO_MSG "invalid write"; |
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[90c3b1c] | 172 | } // if |
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| 173 | } // if |
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[5d125e4] | 174 | va_end( args ); |
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[b72bad4f] | 175 | |
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[6c5d92f] | 176 | setPrt$( os, true ); // called in output cascade |
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| 177 | sepReset$( os ); // reset separator |
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[90c3b1c] | 178 | return len; |
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[829c907] | 179 | } // fmt |
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| 180 | |
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[fd8f88f] | 181 | static ofstream soutFile = { (FILE *)stdout }; |
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[a87d40b] | 182 | ofstream & sout = soutFile, & stdout = soutFile; |
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[fd8f88f] | 183 | static ofstream serrFile = { (FILE *)stderr }; |
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[a87d40b] | 184 | ofstream & serr = serrFile, & stderr = serrFile; |
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[51b7345] | 185 | |
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[e474cf09] | 186 | static ofstream lsoutFile = { (FILE *)stdout }; |
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| 187 | ofstream & lsout = lsoutFile; |
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| 188 | |
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[fd8f88f] | 189 | static ofstream exitFile = { (FILE *)stdout }; |
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[65240bb] | 190 | ofstream & exit = exitFile; |
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[fd8f88f] | 191 | static ofstream abortFile = { (FILE *)stderr }; |
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[65240bb] | 192 | ofstream & abort = abortFile; |
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[5cb2b8c] | 193 | |
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[f451177] | 194 | ofstream & nl( ofstream & os ) { |
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| 195 | nl$( os ); // call basic_ostream nl |
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| 196 | flush( os ); |
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| 197 | return os; |
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| 198 | } // nl |
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[90c3b1c] | 199 | |
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[00e9be9] | 200 | |
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[8d321f9] | 201 | // *********************************** ifstream *********************************** |
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[65240bb] | 202 | |
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[51b7345] | 203 | |
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[09687aa] | 204 | // private |
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[7ce2483] | 205 | void ?{}( ifstream & is, void * file ) with( is ) { |
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[3bf3b6b] | 206 | file$ = file; |
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| 207 | nlOnOff$ = false; |
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[65240bb] | 208 | } // ?{} |
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[09687aa] | 209 | |
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[c8371b5] | 210 | bool getANL$( ifstream & os ) { return os.nlOnOff$; } |
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| 211 | |
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[7ce2483] | 212 | inline void lock( ifstream & os ) with( os ) { lock( os.lock$ ); } |
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| 213 | inline void unlock( ifstream & os ) { unlock( os.lock$ ); } |
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| 214 | |
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[09687aa] | 215 | // public |
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[6c5d92f] | 216 | void ?{}( ifstream & is ) { is.file$ = 0p; } |
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[7ce2483] | 217 | void ?{}( ifstream & is, const char name[], const char mode[] ) { open( is, name, mode ); } |
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| 218 | void ?{}( ifstream & is, const char name[] ) { open( is, name, "r" ); } |
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| 219 | void ^?{}( ifstream & is ) { close( is ); } |
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[4cae032] | 220 | |
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[7ce2483] | 221 | bool fail( ifstream & is ) { return is.file$ == 0p || ferror( (FILE *)(is.file$) ); } |
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| 222 | void clear( ifstream & is ) { clearerr( (FILE *)(is.file$) ); } |
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[00e9be9] | 223 | |
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[c8371b5] | 224 | void nlOn( ifstream & os ) { os.nlOnOff$ = true; } |
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| 225 | void nlOff( ifstream & os ) { os.nlOnOff$ = false; } |
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| 226 | |
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| 227 | void ends( ifstream & is ) {} |
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[e474cf09] | 228 | |
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[c8371b5] | 229 | bool eof( ifstream & is ) { return feof( (FILE *)(is.file$) ) != 0; } |
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[6ba0659] | 230 | |
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[e3fea42] | 231 | void open( ifstream & is, const char name[], const char mode[] ) { |
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[8dcb832] | 232 | FILE * file; |
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| 233 | for ( cnt; 10 ) { |
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| 234 | errno = 0; |
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| 235 | file = fopen( name, mode ); |
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| 236 | if ( file != 0p || errno != EINTR ) break; // timer interrupt ? |
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| 237 | if ( cnt == 9 ) abort( "ifstream open EINTR spinning exceeded" ); |
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| 238 | } // for |
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[d1a9ff5] | 239 | if ( file == 0p ) { |
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[8d321f9] | 240 | throw (Open_Failure){ is }; |
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| 241 | // abort | IO_MSG "open input file \"" | name | "\"" | nl | strerror( errno ); |
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[93c2e0a] | 242 | } // if |
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[3bf3b6b] | 243 | (is){ file }; // initialize |
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[90c3b1c] | 244 | } // open |
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[6ba0659] | 245 | |
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[7ce2483] | 246 | void open( ifstream & is, const char name[] ) { open( is, name, "r" ); } |
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[8da74119] | 247 | |
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[7ce2483] | 248 | void close( ifstream & is ) with( is ) { |
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[3bf3b6b] | 249 | if ( (FILE *)(file$) == 0p ) return; |
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| 250 | if ( (FILE *)(file$) == (FILE *)stdin ) return; |
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[90c3b1c] | 251 | |
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[8dcb832] | 252 | int ret; |
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| 253 | for ( cnt; 10 ) { |
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| 254 | errno = 0; |
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| 255 | ret = fclose( (FILE *)(file$) ); |
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| 256 | if ( ret != EOF || errno != EINTR ) break; // timer interrupt ? |
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| 257 | if ( cnt == 9 ) abort( "ifstream close EINTR spinning exceeded" ); |
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| 258 | } // for |
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| 259 | if ( ret == EOF ) { |
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[ba0d2ea] | 260 | throw (Close_Failure){ is }; |
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| 261 | // abort | IO_MSG "close input" | nl | strerror( errno ); |
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[356189a] | 262 | } // if |
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[8dcb832] | 263 | file$ = 0p; // safety after close |
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[90c3b1c] | 264 | } // close |
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| 265 | |
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[00e9be9] | 266 | ifstream & read( ifstream & is, char data[], size_t size ) { |
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[6ba0659] | 267 | if ( fail( is ) ) { |
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[ba0d2ea] | 268 | throw (Read_Failure){ is }; |
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| 269 | // abort | IO_MSG "attempt read I/O on failed stream"; |
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[6ba0659] | 270 | } // if |
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| 271 | |
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[6c5d92f] | 272 | if ( fread( data, size, 1, (FILE *)(is.file$) ) == 0 ) { |
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[ba0d2ea] | 273 | throw (Read_Failure){ is }; |
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| 274 | // abort | IO_MSG "read" | nl | strerror( errno ); |
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[6ba0659] | 275 | } // if |
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[86bd7c1f] | 276 | return is; |
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[6ba0659] | 277 | } // read |
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[356189a] | 278 | |
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[09687aa] | 279 | ifstream &ungetc( ifstream & is, char c ) { |
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[6ba0659] | 280 | if ( fail( is ) ) { |
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[ff2a33e] | 281 | abort | IO_MSG "attempt ungetc I/O on failed stream"; |
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[6ba0659] | 282 | } // if |
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[51b7345] | 283 | |
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[6c5d92f] | 284 | if ( ungetc( c, (FILE *)(is.file$) ) == EOF ) { |
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[ff2a33e] | 285 | abort | IO_MSG "ungetc" | nl | strerror( errno ); |
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[6ba0659] | 286 | } // if |
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| 287 | return is; |
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| 288 | } // ungetc |
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[51b7345] | 289 | |
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[09687aa] | 290 | int fmt( ifstream & is, const char format[], ... ) { |
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[5d125e4] | 291 | va_list args; |
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[829c907] | 292 | va_start( args, format ); |
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[8dcb832] | 293 | |
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| 294 | int len; |
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| 295 | for () { // no check for EINTR limit waiting for keyboard input |
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| 296 | errno = 0; |
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[7a1b7e6] | 297 | disable_interrupts(); |
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[8dcb832] | 298 | len = vfscanf( (FILE *)(is.file$), format, args ); |
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[7a1b7e6] | 299 | enable_interrupts(); |
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[8dcb832] | 300 | if ( len != EOF || errno != EINTR ) break; // timer interrupt ? |
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| 301 | } // for |
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[90c3b1c] | 302 | if ( len == EOF ) { |
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[6c5d92f] | 303 | if ( ferror( (FILE *)(is.file$) ) ) { |
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[ff2a33e] | 304 | abort | IO_MSG "invalid read"; |
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[90c3b1c] | 305 | } // if |
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| 306 | } // if |
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[5d125e4] | 307 | va_end( args ); |
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[90c3b1c] | 308 | return len; |
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[829c907] | 309 | } // fmt |
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[51b7345] | 310 | |
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[fd8f88f] | 311 | static ifstream sinFile = { (FILE *)stdin }; |
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[a87d40b] | 312 | ifstream & sin = sinFile, & stdin = sinFile; |
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[86bd7c1f] | 313 | |
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[91e52be] | 314 | |
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[8d321f9] | 315 | // *********************************** exceptions *********************************** |
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[91e52be] | 316 | |
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| 317 | |
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[ba0d2ea] | 318 | static vtable(Open_Failure) Open_Failure_vt; |
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[a5a6a1a8] | 319 | |
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| 320 | // exception I/O constructors |
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[3bf3b6b] | 321 | void ?{}( Open_Failure & ex, ofstream & ostream ) with(ex) { |
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| 322 | virtual_table = &Open_Failure_vt; |
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| 323 | ostream = &ostream; |
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| 324 | tag = 1; |
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[a5a6a1a8] | 325 | } // ?{} |
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| 326 | |
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[3bf3b6b] | 327 | void ?{}( Open_Failure & ex, ifstream & istream ) with(ex) { |
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| 328 | virtual_table = &Open_Failure_vt; |
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| 329 | istream = &istream; |
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| 330 | tag = 0; |
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[a5a6a1a8] | 331 | } // ?{} |
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| 332 | |
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| 333 | |
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[ba0d2ea] | 334 | static vtable(Close_Failure) Close_Failure_vt; |
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| 335 | |
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| 336 | // exception I/O constructors |
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[3bf3b6b] | 337 | void ?{}( Close_Failure & ex, ofstream & ostream ) with(ex) { |
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| 338 | virtual_table = &Close_Failure_vt; |
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| 339 | ostream = &ostream; |
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| 340 | tag = 1; |
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[ba0d2ea] | 341 | } // ?{} |
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| 342 | |
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[3bf3b6b] | 343 | void ?{}( Close_Failure & ex, ifstream & istream ) with(ex) { |
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| 344 | virtual_table = &Close_Failure_vt; |
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| 345 | istream = &istream; |
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| 346 | tag = 0; |
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[ba0d2ea] | 347 | } // ?{} |
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| 348 | |
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| 349 | |
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| 350 | static vtable(Write_Failure) Write_Failure_vt; |
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| 351 | |
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| 352 | // exception I/O constructors |
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[3bf3b6b] | 353 | void ?{}( Write_Failure & ex, ofstream & ostream ) with(ex) { |
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| 354 | virtual_table = &Write_Failure_vt; |
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| 355 | ostream = &ostream; |
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| 356 | tag = 1; |
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[ba0d2ea] | 357 | } // ?{} |
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| 358 | |
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[3bf3b6b] | 359 | void ?{}( Write_Failure & ex, ifstream & istream ) with(ex) { |
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| 360 | virtual_table = &Write_Failure_vt; |
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| 361 | istream = &istream; |
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| 362 | tag = 0; |
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[ba0d2ea] | 363 | } // ?{} |
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| 364 | |
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| 365 | |
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| 366 | static vtable(Read_Failure) Read_Failure_vt; |
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| 367 | |
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| 368 | // exception I/O constructors |
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[3bf3b6b] | 369 | void ?{}( Read_Failure & ex, ofstream & ostream ) with(ex) { |
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| 370 | virtual_table = &Read_Failure_vt; |
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| 371 | ostream = &ostream; |
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| 372 | tag = 1; |
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[ba0d2ea] | 373 | } // ?{} |
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| 374 | |
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[3bf3b6b] | 375 | void ?{}( Read_Failure & ex, ifstream & istream ) with(ex) { |
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| 376 | virtual_table = &Read_Failure_vt; |
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| 377 | istream = &istream; |
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| 378 | tag = 0; |
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[ba0d2ea] | 379 | } // ?{} |
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| 380 | |
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| 381 | // void throwOpen_Failure( ofstream & ostream ) { |
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| 382 | // Open_Failure exc = { ostream }; |
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| 383 | // } |
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| 384 | |
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| 385 | // void throwOpen_Failure( ifstream & istream ) { |
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| 386 | // Open_Failure exc = { istream }; |
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| 387 | // } |
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[91e52be] | 388 | |
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[86bd7c1f] | 389 | // Local Variables: // |
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| 390 | // tab-width: 4 // |
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| 391 | // End: // |
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