source: libcfa/src/fstream.cfa@ 1a3040c

ADT arm-eh ast-experimental enum forall-pointer-decay jacob/cs343-translation jenkins-sandbox new-ast new-ast-unique-expr pthread-emulation qualifiedEnum
Last change on this file since 1a3040c was 4cae032, checked in by Peter A. Buhr <pabuhr@…>, 6 years ago

add missing destructor for ofstream nad ifstream

  • Property mode set to 100644
File size: 7.2 KB
Line 
1//
2// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
3//
4// The contents of this file are covered under the licence agreement in the
5// file "LICENCE" distributed with Cforall.
6//
7// fstream.c --
8//
9// Author : Peter A. Buhr
10// Created On : Wed May 27 17:56:53 2015
11// Last Modified By : Peter A. Buhr
12// Last Modified On : Fri Nov 29 06:56:46 2019
13// Update Count : 355
14//
15
16#include "fstream.hfa"
17
18#include <stdio.h> // vfprintf, vfscanf
19#include <stdlib.h> // exit
20#include <stdarg.h> // varargs
21#include <string.h> // strlen
22#include <float.h> // DBL_DIG, LDBL_DIG
23#include <complex.h> // creal, cimag
24#include <assert.h>
25#include <errno.h> // errno
26
27
28//*********************************** ofstream ***********************************
29
30
31#define IO_MSG "I/O error: "
32
33void ?{}( ofstream & os, void * file ) {
34 os.file = file;
35 os.sepDefault = true;
36 os.sepOnOff = false;
37 os.nlOnOff = true;
38 os.prt = false;
39 os.sawNL = false;
40 sepSet( os, " " );
41 sepSetCur( os, sepGet( os ) );
42 sepSetTuple( os, ", " );
43} // ?{}
44
45// private
46bool sepPrt( ofstream & os ) { setNL( os, false ); return os.sepOnOff; }
47void sepReset( ofstream & os ) { os.sepOnOff = os.sepDefault; }
48void sepReset( ofstream & os, bool reset ) { os.sepDefault = reset; os.sepOnOff = os.sepDefault; }
49const char * sepGetCur( ofstream & os ) { return os.sepCur; }
50void sepSetCur( ofstream & os, const char * sepCur ) { os.sepCur = sepCur; }
51bool getNL( ofstream & os ) { return os.sawNL; }
52void setNL( ofstream & os, bool state ) { os.sawNL = state; }
53bool getANL( ofstream & os ) { return os.nlOnOff; }
54bool getPrt( ofstream & os ) { return os.prt; }
55void setPrt( ofstream & os, bool state ) { os.prt = state; }
56
57// public
58void ?{}( ofstream & os ) { os.file = 0; }
59
60void ?{}( ofstream & os, const char * name, const char * mode ) {
61 open( os, name, mode );
62} // ?{}
63
64void ?{}( ofstream & os, const char * name ) {
65 open( os, name, "w" );
66} // ?{}
67
68void ^?{}( ofstream & os ) {
69 close( os );
70} // ^?{}
71
72void sepOn( ofstream & os ) { os.sepOnOff = ! getNL( os ); }
73void sepOff( ofstream & os ) { os.sepOnOff = false; }
74
75bool sepDisable( ofstream & os ) {
76 bool temp = os.sepDefault;
77 os.sepDefault = false;
78 sepReset( os );
79 return temp;
80} // sepDisable
81
82bool sepEnable( ofstream & os ) {
83 bool temp = os.sepDefault;
84 os.sepDefault = true;
85 if ( os.sepOnOff ) sepReset( os ); // start of line ?
86 return temp;
87} // sepEnable
88
89void nlOn( ofstream & os ) { os.nlOnOff = true; }
90void nlOff( ofstream & os ) { os.nlOnOff = false; }
91
92const char * sepGet( ofstream & os ) { return os.separator; }
93void sepSet( ofstream & os, const char * s ) {
94 assert( s );
95 strncpy( os.separator, s, sepSize - 1 );
96 os.separator[sepSize - 1] = '\0';
97} // sepSet
98
99const char * sepGetTuple( ofstream & os ) { return os.tupleSeparator; }
100void sepSetTuple( ofstream & os, const char * s ) {
101 assert( s );
102 strncpy( os.tupleSeparator, s, sepSize - 1 );
103 os.tupleSeparator[sepSize - 1] = '\0';
104} // sepSet
105
106void ends( ofstream & os ) {
107 if ( getANL( os ) ) nl( os );
108 else setPrt( os, false ); // turn off
109 if ( &os == &exit ) exit( EXIT_FAILURE );
110 if ( &os == &abort ) abort();
111} // ends
112
113int fail( ofstream & os ) {
114 return os.file == 0 || ferror( (FILE *)(os.file) );
115} // fail
116
117int flush( ofstream & os ) {
118 return fflush( (FILE *)(os.file) );
119} // flush
120
121void open( ofstream & os, const char * name, const char * mode ) {
122 FILE * file = fopen( name, mode );
123 #ifdef __CFA_DEBUG__
124 if ( file == 0 ) {
125 abort | IO_MSG "open output file \"" | name | "\"" | nl | strerror( errno );
126 } // if
127 #endif // __CFA_DEBUG__
128 (os){ file };
129} // open
130
131void open( ofstream & os, const char * name ) {
132 open( os, name, "w" );
133} // open
134
135void close( ofstream & os ) {
136 if ( (FILE *)(os.file) == stdout || (FILE *)(os.file) == stderr ) return;
137
138 if ( fclose( (FILE *)(os.file) ) == EOF ) {
139 abort | IO_MSG "close output" | nl | strerror( errno );
140 } // if
141} // close
142
143ofstream & write( ofstream & os, const char * data, size_t size ) {
144 if ( fail( os ) ) {
145 abort | IO_MSG "attempt write I/O on failed stream";
146 } // if
147
148 if ( fwrite( data, 1, size, (FILE *)(os.file) ) != size ) {
149 abort | IO_MSG "write" | nl | strerror( errno );
150 } // if
151 return os;
152} // write
153
154int fmt( ofstream & os, const char format[], ... ) {
155 va_list args;
156 va_start( args, format );
157 int len = vfprintf( (FILE *)(os.file), format, args );
158 if ( len == EOF ) {
159 if ( ferror( (FILE *)(os.file) ) ) {
160 abort | IO_MSG "invalid write";
161 } // if
162 } // if
163 va_end( args );
164
165 setPrt( os, true ); // called in output cascade
166 sepReset( os ); // reset separator
167 return len;
168} // fmt
169
170static ofstream soutFile = { (FILE *)stdout };
171ofstream & sout = soutFile, & stdout = soutFile;
172static ofstream serrFile = { (FILE *)stderr };
173ofstream & serr = serrFile, & stderr = serrFile;
174
175static ofstream exitFile = { (FILE *)stdout };
176ofstream & exit = exitFile;
177static ofstream abortFile = { (FILE *)stderr };
178ofstream & abort = abortFile;
179
180
181//*********************************** ifstream ***********************************
182
183
184// private
185void ?{}( ifstream & is, void * file ) {
186 is.file = file;
187 is.nlOnOff = false;
188} // ?{}
189
190// public
191void ?{}( ifstream & is ) { is.file = 0; }
192
193void ?{}( ifstream & is, const char * name, const char * mode ) {
194 open( is, name, mode );
195} // ?{}
196
197void ?{}( ifstream & is, const char * name ) {
198 open( is, name, "r" );
199} // ?{}
200
201void ^?{}( ifstream & is ) {
202 close( is );
203} // ^?{}
204
205void nlOn( ifstream & os ) { os.nlOnOff = true; }
206void nlOff( ifstream & os ) { os.nlOnOff = false; }
207bool getANL( ifstream & os ) { return os.nlOnOff; }
208
209int fail( ifstream & is ) {
210 return is.file == 0 || ferror( (FILE *)(is.file) );
211} // fail
212
213int eof( ifstream & is ) {
214 return feof( (FILE *)(is.file) );
215} // eof
216
217void open( ifstream & is, const char * name, const char * mode ) {
218 FILE * file = fopen( name, mode );
219 #ifdef __CFA_DEBUG__
220 if ( file == 0 ) {
221 abort | IO_MSG "open input file \"" | name | "\"" | nl | strerror( errno );
222 } // if
223 #endif // __CFA_DEBUG__
224 is.file = file;
225} // open
226
227void open( ifstream & is, const char * name ) {
228 open( is, name, "r" );
229} // open
230
231void close( ifstream & is ) {
232 if ( (FILE *)(is.file) == stdin ) return;
233
234 if ( fclose( (FILE *)(is.file) ) == EOF ) {
235 abort | IO_MSG "close input" | nl | strerror( errno );
236 } // if
237} // close
238
239ifstream & read( ifstream & is, char * data, size_t size ) {
240 if ( fail( is ) ) {
241 abort | IO_MSG "attempt read I/O on failed stream";
242 } // if
243
244 if ( fread( data, size, 1, (FILE *)(is.file) ) == 0 ) {
245 abort | IO_MSG "read" | nl | strerror( errno );
246 } // if
247 return is;
248} // read
249
250ifstream &ungetc( ifstream & is, char c ) {
251 if ( fail( is ) ) {
252 abort | IO_MSG "attempt ungetc I/O on failed stream";
253 } // if
254
255 if ( ungetc( c, (FILE *)(is.file) ) == EOF ) {
256 abort | IO_MSG "ungetc" | nl | strerror( errno );
257 } // if
258 return is;
259} // ungetc
260
261int fmt( ifstream & is, const char format[], ... ) {
262 va_list args;
263
264 va_start( args, format );
265 int len = vfscanf( (FILE *)(is.file), format, args );
266 if ( len == EOF ) {
267 if ( ferror( (FILE *)(is.file) ) ) {
268 abort | IO_MSG "invalid read";
269 } // if
270 } // if
271 va_end( args );
272 return len;
273} // fmt
274
275static ifstream sinFile = { (FILE *)stdin };
276ifstream & sin = sinFile, & stdin = sinFile;
277
278// Local Variables: //
279// tab-width: 4 //
280// End: //
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