source: libcfa/src/iostream.cfa@ 72b518fc

Last change on this file since 72b518fc was 0d49efb, checked in by Peter A. Buhr <pabuhr@…>, 2 years ago

allow precision < 3 for manipulator eng

  • Property mode set to 100644
File size: 38.8 KB
Line 
1
2//
3// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
4//
5// The contents of this file are covered under the licence agreement in the
6// file "LICENCE" distributed with Cforall.
7//
8// iostream.cfa --
9//
10// Author : Peter A. Buhr
11// Created On : Wed May 27 17:56:53 2015
12// Last Modified By : Peter A. Buhr
13// Last Modified On : Sun Oct 8 12:10:21 2023
14// Update Count : 1564
15//
16
17#include "iostream.hfa"
18
19#include <stdio.h>
20#include <stdbool.h> // true/false
21#include <stdint.h> // UINT64_MAX
22#include <float.h> // DBL_DIG, LDBL_DIG
23#include <complex.h> // creal, cimag
24#include <ctype.h> // isspace
25//#include <stdio.h>
26
27extern "C" {
28extern size_t strlen (const char *__s) __attribute__ ((__nothrow__ , __leaf__)) __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1)));
29extern int strcmp (const char *__s1, const char *__s2) __attribute__ ((__nothrow__ , __leaf__)) __attribute__ ((__pure__)) __attribute__ ((__nonnull__ (1, 2)));
30extern char *strcpy (char *__restrict __dest, const char *__restrict __src) __attribute__ ((__nothrow__ , __leaf__)) __attribute__ ((__nonnull__ (1, 2)));
31extern void *memcpy (void *__restrict __dest, const void *__restrict __src, size_t __n) __attribute__ ((__nothrow__ , __leaf__)) __attribute__ ((__nonnull__ (1, 2)));
32extern char *strchr(const char *str, int ch);
33} // extern "C"
34
35#include "math.hfa" // isfinite, floor, ceiling_div
36#include "bitmanip.hfa" // high1
37
38#pragma GCC visibility push(default)
39
40
41// *********************************** ostream ***********************************
42
43
44forall( ostype & | basic_ostream( ostype ) ) {
45 ostype & ?|?( ostype & os, bool b ) {
46 if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
47 fmt( os, "%s", b ? "true" : "false" );
48 return os;
49 } // ?|?
50 OSTYPE_VOID_IMPL( bool )
51
52 ostype & ?|?( ostype & os, char c ) {
53 fmt( os, "%c", c );
54 if ( c == '\n' ) setNL$( os, true );
55 return nosep( os );
56 } // ?|?
57 OSTYPE_VOID_IMPL( char )
58
59 ostype & ?|?( ostype & os, signed char sc ) {
60 if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
61 fmt( os, "%'hhd", sc );
62 return os;
63 } // ?|?
64 OSTYPE_VOID_IMPL( signed char )
65
66 ostype & ?|?( ostype & os, unsigned char usc ) {
67 if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
68 fmt( os, "%'hhu", usc );
69 return os;
70 } // ?|?
71 OSTYPE_VOID_IMPL( unsigned char )
72
73 ostype & ?|?( ostype & os, short int si ) {
74 if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
75 fmt( os, "%'hd", si );
76 return os;
77 } // ?|?
78 OSTYPE_VOID_IMPL( short int )
79
80 ostype & ?|?( ostype & os, unsigned short int usi ) {
81 if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
82 fmt( os, "%'hu", usi );
83 return os;
84 } // ?|?
85 OSTYPE_VOID_IMPL( unsigned short int )
86
87 ostype & ?|?( ostype & os, int i ) {
88 if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
89 fmt( os, "%'d", i );
90 return os;
91 } // ?|?
92 OSTYPE_VOID_IMPL( int )
93
94 ostype & ?|?( ostype & os, unsigned int ui ) {
95 if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
96 fmt( os, "%'u", ui );
97 return os;
98 } // ?|?
99 OSTYPE_VOID_IMPL( unsigned int )
100
101 ostype & ?|?( ostype & os, long int li ) {
102 if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
103 fmt( os, "%'ld", li );
104 return os;
105 } // ?|?
106 OSTYPE_VOID_IMPL( long int )
107
108 ostype & ?|?( ostype & os, unsigned long int uli ) {
109 if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
110 fmt( os, "%'lu", uli );
111 return os;
112 } // ?|?
113 OSTYPE_VOID_IMPL( unsigned long int )
114
115 ostype & ?|?( ostype & os, long long int lli ) {
116 if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
117 fmt( os, "%'lld", lli );
118 return os;
119 } // ?|?
120 OSTYPE_VOID_IMPL( long long int )
121
122 ostype & ?|?( ostype & os, unsigned long long int ulli ) {
123 if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
124 fmt( os, "%'llu", ulli );
125 return os;
126 } // ?|?
127 OSTYPE_VOID_IMPL( unsigned long long int )
128
129 #if defined( __SIZEOF_INT128__ )
130 // UINT64_MAX 18_446_744_073_709_551_615_ULL
131 #define P10_UINT64 10_000_000_000_000_000_000_ULL // 19 zeroes
132
133 static inline void base10_128( ostype & os, unsigned int128 val ) {
134 #if defined(__GNUC__) && __GNUC_PREREQ(7,0) // gcc version >= 7
135 if ( val > P10_UINT64 ) {
136 #else
137 if ( (uint64_t)(val >> 64) != 0 || (uint64_t)val > P10_UINT64 ) { // patch gcc 5 & 6 -O3 bug
138 #endif // __GNUC_PREREQ(7,0)
139 base10_128( os, val / P10_UINT64 ); // recursive
140 fmt( os, "%.19lu", (uint64_t)(val % P10_UINT64) );
141 } else {
142 fmt( os, "%lu", (uint64_t)val );
143 } // if
144 } // base10_128
145
146 static inline void base10_128( ostype & os, int128 val ) {
147 if ( val < 0 ) {
148 fmt( os, "-" ); // leading negative sign
149 val = -val;
150 } // if
151 base10_128( os, (unsigned int128)val ); // print zero/positive value
152 } // base10_128
153
154 ostype & ?|?( ostype & os, int128 llli ) {
155 if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
156 base10_128( os, llli );
157 return os;
158 } // ?|?
159 OSTYPE_VOID_IMPL( int128 )
160
161 ostype & ?|?( ostype & os, unsigned int128 ullli ) {
162 if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
163 base10_128( os, ullli );
164 return os;
165 } // ?|?
166 OSTYPE_VOID_IMPL( unsigned int128 )
167 #endif // __SIZEOF_INT128__
168
169 #define PRINT_WITH_DP( os, format, val, ... ) \
170 { \
171 enum { size = 48 }; \
172 char buf[size]; \
173 int len = snprintf( buf, size, format, ##__VA_ARGS__, val ); \
174 fmt( os, "%s", buf ); \
175 if ( isfinite( val ) ) { /* if number, print decimal point when no fraction or exponent */ \
176 for ( i; 0 ~ @ ) { \
177 if ( i == len ) { fmt( os, "." ); break; } \
178 if ( buf[i] == '.' || buf[i] == 'e' || buf[i] == 'E' || \
179 buf[i] == 'p' || buf[i] == 'P' ) break; /* decimal point or scientific ? */ \
180 } /* for */ \
181 } /* if */ \
182 }
183
184 ostype & ?|?( ostype & os, float f ) {
185 if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
186 PRINT_WITH_DP( os, "%'g", f );
187 return os;
188 } // ?|?
189 OSTYPE_VOID_IMPL( float )
190
191 ostype & ?|?( ostype & os, double d ) {
192 if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
193 PRINT_WITH_DP( os, "%'.*lg", d, DBL_DIG );
194 return os;
195 } // ?|?
196 OSTYPE_VOID_IMPL( double )
197
198 ostype & ?|?( ostype & os, long double ld ) {
199 if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
200 PRINT_WITH_DP( os, "%'.*Lg", ld, LDBL_DIG );
201 return os;
202 } // ?|?
203 OSTYPE_VOID_IMPL( long double )
204
205 ostype & ?|?( ostype & os, float _Complex fc ) {
206 if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
207// os | crealf( fc ) | nonl;
208 PRINT_WITH_DP( os, "%'g", crealf( fc ) );
209 PRINT_WITH_DP( os, "%'+g", cimagf( fc ) );
210 fmt( os, "i" );
211 return os;
212 } // ?|?
213 OSTYPE_VOID_IMPL( float _Complex )
214
215 ostype & ?|?( ostype & os, double _Complex dc ) {
216 if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
217// os | creal( dc ) | nonl;
218 PRINT_WITH_DP( os, "%'.*lg", creal( dc ), DBL_DIG );
219 PRINT_WITH_DP( os, "%'+.*lg", cimag( dc ), DBL_DIG );
220 fmt( os, "i" );
221 return os;
222 } // ?|?
223 OSTYPE_VOID_IMPL( double _Complex )
224
225 ostype & ?|?( ostype & os, long double _Complex ldc ) {
226 if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
227// os | creall( ldc ) || nonl;
228 PRINT_WITH_DP( os, "%'.*Lg", creall( ldc ), LDBL_DIG );
229 PRINT_WITH_DP( os, "%'+.*Lg", cimagl( ldc ), LDBL_DIG );
230 fmt( os, "i" );
231 return os;
232 } // ?|?
233 OSTYPE_VOID_IMPL( long double _Complex )
234
235 ostype & ?|?( ostype & os, const char s[] ) {
236 enum { Open = 1, Close, OpenClose };
237 static const unsigned char mask[256] @= { // 256 covers all Latin-1 characters
238 // opening delimiters, no space after
239 ['('] : Open, ['['] : Open, ['{'] : Open,
240 ['='] : Open, ['$'] : Open, [(unsigned char)'£'] : Open, [(unsigned char)'¥'] : Open,
241 [(unsigned char)'¡'] : Open, [(unsigned char)'¿'] : Open, [(unsigned char)'«'] : Open,
242 // closing delimiters, no space before
243 [','] : Close, ['.'] : Close, [';'] : Close, ['!'] : Close, ['?'] : Close,
244 ['%'] : Close, [(unsigned char)'¢'] : Close, [(unsigned char)'»'] : Close,
245 [')'] : Close, [']'] : Close, ['}'] : Close,
246 // opening-closing delimiters, no space before or after
247 ['\''] : OpenClose, ['`'] : OpenClose, ['"'] : OpenClose, [':'] : OpenClose,
248 [' '] : OpenClose, ['\f'] : OpenClose, ['\n'] : OpenClose, ['\r'] : OpenClose, ['\t'] : OpenClose, ['\v'] : OpenClose, // isspace
249 }; // mask
250
251 if ( s == 0p ) { fmt( os, "%s", "0p" ); return os; } // null pointer
252 if ( s[0] == '\0' ) { nosep( os ); return os; } // null string => no leading/trailing separator
253
254 // first character IS NOT spacing or closing punctuation => add left separator
255 unsigned char ch = s[0]; // must make unsigned
256 if ( sepPrt$( os ) && mask[ ch ] != Close && mask[ ch ] != OpenClose ) {
257 fmt( os, "%s", sepGetCur$( os ) );
258 } // if
259
260 // if string starts line, must reset to determine open state because separator is off
261 sepReset$( os ); // reset separator
262
263 // last character IS spacing or opening punctuation => turn off separator for next item
264 int len = strlen( s );
265 ch = s[len - 1]; // must make unsigned
266 fmt( os, "%s", s ); // fmt resets seperator, but reset it again
267 if ( sepPrt$( os ) && mask[ ch ] != Open && mask[ ch ] != OpenClose ) {
268 sep( os );
269 } else {
270 nosep( os );
271 } // if
272 if ( ch == '\n' ) setNL$( os, true ); // check *AFTER* sepPrt$ call above as it resets NL flag
273 return os;
274// return write( os, s, len );
275 } // ?|?
276 OSTYPE_VOID_IMPL( const char * )
277
278// ostype & ?|?( ostype & os, const char16_t s[] ) {
279// if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
280// fmt( os, "%ls", s );
281// return os;
282// } // ?|?
283
284// #if ! ( __ARM_ARCH_ISA_ARM == 1 && __ARM_32BIT_STATE == 1 ) // char32_t == wchar_t => ambiguous
285// ostype & ?|?( ostype & os, const char32_t s[] ) {
286// if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
287// fmt( os, "%ls", s );
288// return os;
289// } // ?|?
290// #endif // ! ( __ARM_ARCH_ISA_ARM == 1 && __ARM_32BIT_STATE == 1 )
291
292// ostype & ?|?( ostype & os, const wchar_t s[] ) {
293// if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
294// fmt( os, "%ls", s );
295// return os;
296// } // ?|?
297
298 ostype & ?|?( ostype & os, const void * p ) {
299 if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
300 fmt( os, "%p", p );
301 return os;
302 } // ?|?
303 OSTYPE_VOID_IMPL( const void * )
304
305 // manipulators
306 ostype & ?|?( ostype & os, ostype & (* manip)( ostype & ) ) {
307 return manip( os );
308 } // ?|?
309 void ?|?( ostype & os, ostype & (* manip)( ostype & ) ) {
310 manip( os );
311 if ( getPrt$( os ) ) ends( os ); // something printed ?
312 setPrt$( os, false ); // turn off
313 } // ?|?
314
315 ostype & nl( ostype & os ) {
316 (ostype &)(os | '\n');
317 setPrt$( os, false ); // turn off
318 setNL$( os, true );
319 return nosep( os ); // prepare for next line
320 } // nl
321
322 ostype & nonl( ostype & os ) {
323 setPrt$( os, false ); // turn off
324 return os;
325 } // nonl
326
327 ostype & nlOn( ostype & os ) {
328 nlOn( os ); // call void returning
329 return os;
330 } // nlOn
331
332 ostype & nlOff( ostype & os ) {
333 nlOff( os ); // call void returning
334 return os;
335 } // nlOff
336
337 ostype & sepVal( ostype & os ) {
338 return (ostype &)(os | sepGet( os ));
339 } // sepVal
340
341 ostype & sepTupleVal( ostype & os ) {
342 return os | sepGetTuple( os );
343 } // sepTupleVal
344
345 ostype & sep( ostype & os ) {
346 sep( os ); // call void returning
347 return os;
348 } // sep
349
350 ostype & nosep( ostype & os ) {
351 nosep( os ); // call void returning
352 return os;
353 } // nosep
354
355 ostype & sepOn( ostype & os ) {
356 sepOn( os ); // call void returning
357 return os;
358 } // sepOn
359
360 ostype & sepOff( ostype & os ) {
361 sepOff( os ); // call void returning
362 return os;
363 } // sepOff
364} // distribution
365
366// tuples
367forall( ostype &, T, Params... | writeable( T, ostype ) | { ostype & ?|?( ostype &, Params ); } ) {
368 ostype & ?|?( ostype & os, T arg, Params rest ) {
369 (ostype &)(os | arg); // print first argument
370 sepSetCur$( os, sepGetTuple( os ) ); // switch to tuple separator
371 (ostype &)(os | rest); // print remaining arguments
372 sepSetCur$( os, sepGet( os ) ); // switch to regular separator
373 return os;
374 } // ?|?
375 void ?|?( ostype & os, T arg, Params rest ) {
376 // (ostype &)(?|?( os, arg, rest )); ends( os );
377 (ostype &)(os | arg); // print first argument
378 sepSetCur$( os, sepGetTuple( os ) ); // switch to tuple separator
379 (ostype &)(os | rest); // print remaining arguments
380 sepSetCur$( os, sepGet( os ) ); // switch to regular separator
381 ends( os );
382 } // ?|?
383} // distribution
384
385// writes the range [begin, end) to the given stream
386forall( ostype &, elt_type | writeable( elt_type, ostype ), iterator_type | iterator( iterator_type, elt_type ) ) {
387 void write( iterator_type begin, iterator_type end, ostype & os ) {
388 void print( elt_type i ) { os | i; }
389 for_each( begin, end, print );
390 } // ?|?
391
392 void write_reverse( iterator_type begin, iterator_type end, ostype & os ) {
393 void print( elt_type i ) { os | i; }
394 for_each_reverse( begin, end, print );
395 } // ?|?
396} // distribution
397
398// *********************************** manipulators ***********************************
399
400// *********************************** integral ***********************************
401
402static const char * shortbin[] = { "0", "1", "10", "11", "100", "101", "110", "111", "1000", "1001", "1010", "1011", "1100", "1101", "1110", "1111" };
403static const char * longbin[] = { "0000", "0001", "0010", "0011", "0100", "0101", "0110", "0111", "1000", "1001", "1010", "1011", "1100", "1101", "1110", "1111" };
404
405// Default prefix for non-decimal prints is 0b, 0, 0x.
406#define INTEGRAL_FMT_IMPL( T, IFMTNP, IFMTP ) \
407forall( ostype & | basic_ostream( ostype ) ) { \
408 ostype & ?|?( ostype & os, _Ostream_Manip(T) f ) { \
409 if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) ); \
410\
411 if ( f.base == 'b' || f.base == 'B' ) { /* bespoke binary format */ \
412 int bits = high1( f.val ); /* position of most significant bit */ \
413 if ( bits == 0 ) bits = 1; /* 0 value => force one bit to print */ \
414 int spaces; \
415 if ( ! f.flags.left ) { /* right justified ? */ \
416 /* Note, base prefix then zero padding or spacing then prefix. */ \
417 if ( f.flags.pc ) { \
418 spaces = f.wd - f.pc; \
419 if ( ! f.flags.nobsdp ) { spaces -= 2; } /* base prefix takes space */ \
420 if ( spaces > 0 ) fmt( os, "%*s", spaces, " " ); /* space pad */ \
421 if ( ! f.flags.nobsdp ) { fmt( os, "0%c", f.base ); } \
422 spaces = f.pc - bits; \
423 if ( spaces > 0 ) fmt( os, "%0*d", spaces, 0 ); /* zero pad */ \
424 } else { \
425 spaces = f.wd - bits; \
426 if ( ! f.flags.nobsdp ) { spaces -= 2; } /* base prefix takes space */ \
427 if ( f.flags.pad0 ) { \
428 if ( ! f.flags.nobsdp ) { fmt( os, "0%c", f.base ); } \
429 if ( spaces > 0 ) fmt( os, "%0*d", spaces, 0 ); /* zero pad */ \
430 } else { \
431 if ( spaces > 0 ) fmt( os, "%*s", spaces, " " ); /* space pad */ \
432 if ( ! f.flags.nobsdp ) { fmt( os, "0%c", f.base ); } \
433 } /* if */ \
434 } /* if */ \
435 } else { \
436 if ( ! f.flags.nobsdp ) fmt( os, "0%c", f.base ); \
437 if ( f.flags.pc ) { \
438 spaces = f.pc - bits; \
439 if ( spaces > 0 ) fmt( os, "%0*d", spaces, 0 ); /* zero pad */ \
440 spaces = f.wd - f.pc; \
441 } else { /* pad0 flag ignored with left flag */ \
442 spaces = f.wd - bits; \
443 } /* if */ \
444 if ( ! f.flags.nobsdp ) { spaces -= 2; } /* base prefix takes space */ \
445 } /* if */ \
446 int shift = floor( bits - 1, 4 ); \
447 typeof( f.val ) temp = f.val; \
448 fmt( os, "%s", shortbin[(temp >> shift) & 0xf] ); \
449 for () { \
450 shift -= 4; \
451 if ( shift < 0 ) break; \
452 temp = f.val; \
453 fmt( os, "%s", longbin[(temp >> shift) & 0xf] ); \
454 } /* for */ \
455 if ( f.flags.left && spaces > 0 ) fmt( os, "%*s", spaces, " " ); \
456 return os; \
457 } /* if */ \
458\
459 char fmtstr[sizeof(IFMTP)]; /* sizeof includes '\0' */ \
460 if ( ! f.flags.pc ) memcpy( &fmtstr, IFMTNP, sizeof(IFMTNP) ); \
461 else memcpy( &fmtstr, IFMTP, sizeof(IFMTP) ); \
462 int star = 5; /* position before first '*' */ \
463\
464 /* Insert flags into spaces before '*', from right to left. */ \
465 if ( ! f.flags.nobsdp ) { fmtstr[star] = '#'; star -= 1; } \
466 if ( f.flags.left ) { fmtstr[star] = '-'; star -= 1; } \
467 if ( f.flags.sign ) { fmtstr[star] = '+'; star -= 1; } \
468 if ( f.flags.pad0 && ! f.flags.pc ) { fmtstr[star] = '0'; star -= 1; } \
469 fmtstr[star] = '\''; star -= 1; /* locale */ \
470 fmtstr[star] = '%'; \
471\
472 /* Special case printing 0 in hexadecimal as printf does not put the base. */ \
473 if ( (f.base == 'x' | f.base == 'X') && ! f.flags.nobsdp && f.val == 0 ) { \
474 fmt( os, f.base == 'x' ? "0x" : "0X" ); \
475 f.wd -= 2; \
476 if ( f.wd < 0 ) f.wd = 1; \
477 } /* if */ \
478\
479 if ( ! f.flags.pc ) { /* no precision */ \
480 fmtstr[sizeof(IFMTNP)-2] = f.base; /* sizeof includes '\0' */ \
481 /* printf( "%s %c\n", &fmtstr[star], f.base ); */ \
482 fmt( os, &fmtstr[star], f.wd, f.val ); \
483 } else { /* precision */ \
484 fmtstr[sizeof(IFMTP)-2] = f.base; /* sizeof includes '\0' */ \
485 /* printf( "%s %c\n", &fmtstr[star], f.base ); */ \
486 fmt( os, &fmtstr[star], f.wd, f.pc, f.val ); \
487 } /* if */ \
488 return os; \
489 } /* ?|? */ \
490 OSTYPE_VOID_IMPL( _Ostream_Manip(T) ) \
491} // distribution
492
493INTEGRAL_FMT_IMPL( signed char, " *hh ", " *.*hh " )
494INTEGRAL_FMT_IMPL( unsigned char, " *hh ", " *.*hh " )
495INTEGRAL_FMT_IMPL( signed short int, " *h ", " *.*h " )
496INTEGRAL_FMT_IMPL( unsigned short int, " *h ", " *.*h " )
497INTEGRAL_FMT_IMPL( signed int, " * ", " *.* " )
498INTEGRAL_FMT_IMPL( unsigned int, " * ", " *.* " )
499INTEGRAL_FMT_IMPL( signed long int, " *l ", " *.*l " )
500INTEGRAL_FMT_IMPL( unsigned long int, " *l ", " *.*l " )
501INTEGRAL_FMT_IMPL( signed long long int, " *ll ", " *.*ll " )
502INTEGRAL_FMT_IMPL( unsigned long long int, " *ll ", " *.*ll " )
503
504
505#if defined( __SIZEOF_INT128__ )
506// Default prefix for non-decimal prints is 0b, 0, 0x.
507forall( ostype & | basic_ostream( ostype ) )
508static inline void base_128( ostype & os, unsigned int128 val, unsigned int128 power, _Ostream_Manip(uint64_t) & f, unsigned int maxdig, unsigned int bits, unsigned int cnt = 0 ) {
509 int wd = 1; // f.wd is never 0 because 0 implies left-pad
510 if ( val > power ) { // subdivide value into printable 64-bit values
511 base_128( os, val / power, power, f, maxdig, bits, cnt + 1 ); // recursive
512 f.val = val % power;
513 if ( cnt == 1 && f.flags.left ) { wd = f.wd; f.wd = maxdig; } // copy f.wd and reset for printing middle chunk
514 // printf( "R val:%#lx(%lu) wd:%u pc:%u base:%c neg:%d pc:%d left:%d nobsdp:%d sign:%d pad0:%d\n",
515 // f.val, f.val, f.wd, f.pc, f.base, f.flags.neg, f.flags.pc, f.flags.left, f.flags.nobsdp, f.flags.sign, f.flags.pad0 );
516 (ostype &)(os | f);
517 if ( cnt == 1 ) {
518 if ( f.flags.left ) { wd -= maxdig; f.wd = wd < 0 ? 1 : wd; } // update and restore f.wd for printing end chunk
519 nosep( os ); // no seperator between chunks
520 } // if
521 } else { // print start chunk
522 f.val = val;
523 // f.pc is unsigned => use wd
524 if ( f.flags.pc && f.pc > maxdig * cnt ) { wd = f.pc - maxdig * cnt; f.pc = wd < 0 ? 0 : wd; }
525 else { f.flags.pc = false; f.pc = 0; }
526
527 if ( ! f.flags.left ) { // right justify
528 wd = f.wd - maxdig * cnt;
529 f.wd = wd < 0 ? 1 : wd;
530 wd = maxdig;
531 } else { // left justify
532 if ( cnt != 0 ) { // value >= 2^64 ?
533 unsigned int dig, bs = 0;
534 // compute size of prefix digits and base
535 if ( f.base == 'd' || f.base == 'u' ) { // no base prefix
536 dig = ceil( log10( f.val ) ); // use floating-point
537 if ( f.base == 'd' && (f.flags.neg || f.flags.sign) ) bs = 1; // sign ?
538 } else {
539 dig = ceiling_div( high1( f.val ), bits );
540 if ( ! f.flags.nobsdp ) { // base prefix ?
541 if ( f.base == 'o' ) {
542 // 0 prefix for octal is not added for precision with leading zero
543 if ( f.pc <= dig ) bs = 1; // 1 character prefix
544 } else bs = 2; // 2 character prefix
545 } // if
546 } // if
547 wd = f.wd - (f.pc > dig ? f.pc : dig) - bs; // precision > leading digits ?
548 if ( wd < 0 ) wd = 1;
549 f.wd = 1;
550 } // if
551 // all manipulators handled implicitly for value < 2^64
552 } // if
553 // prior checks ensure wd not negative
554
555 if ( f.flags.neg ) f.val = -f.val;
556 // printf( "L val:%#lx(%lu) wd:%u pc:%u base:%c neg:%d pc:%d left:%d nobsdp:%d sign:%d pad0:%d\n",
557 // f.val, f.val, f.wd, f.pc, f.base, f.flags.neg, f.flags.pc, f.flags.left, f.flags.nobsdp, f.flags.sign, f.flags.pad0 );
558 (ostype &)(os | f);
559
560 // remaining middle and end chunks are padded with 0s on the left
561 if ( ! f.flags.left ) { f.flags.pad0 = true; f.flags.pc = false; } // left pad with 0s
562 else { f.pc = maxdig; f.flags.pc = true; } // left pad with precision
563
564 if ( cnt != 0 ) nosep( os ); // no seperator between chunks
565 f.wd = wd; // reset f.wd for next chunk
566 f.flags.sign = false; // no leading +/- sign
567 f.flags.nobsdp = true; // no leading base prefix
568 } // if
569} // base_128
570
571#define INTEGRAL_FMT_IMPL128( T ) \
572forall( ostype & | basic_ostream( ostype ) ) { \
573 ostype & ?|?( ostype & os, _Ostream_Manip(T) f ) { \
574 _Ostream_Manip(uint64_t) fmt; \
575 fmt.[wd, pc, base, all] = f.[wd, pc, base, all]; \
576 if ( f.base == 'b' | f.base == 'B' ) { \
577 base_128( os, f.val, (unsigned int128)1 << 64, fmt, 64, 1 ); \
578 } else if ( f.base == 'o' ) { \
579 base_128( os, f.val, (unsigned int128)1 << 63, fmt, 21, 3 ); \
580 } else if ( f.base == 'd' || f.base == 'u' ) { \
581 if ( f.base == 'd' && f.val < 0 ) { f.val = -f.val; fmt.flags.neg = true; } \
582 base_128( os, f.val, (unsigned int128)10_000_000_000_000_000_000UL, fmt, 19, 0 ); \
583 } else { \
584 base_128( os, f.val, (unsigned int128)1 << 64, fmt, 16, 4 ); \
585 } /* if */ \
586 return os; \
587 } /* ?|? */ \
588 OSTYPE_VOID_IMPL( _Ostream_Manip(T) ) \
589} // distribution
590
591INTEGRAL_FMT_IMPL128( int128 )
592INTEGRAL_FMT_IMPL128( unsigned int128 )
593#endif // __SIZEOF_INT128__
594
595// *********************************** floating point ***********************************
596
597static const char *suffixes[] = {
598 "y", "z", "a", "f", "p", "n", "u", "m", "",
599 "K", "M", "G", "T", "P", "E", "Z", "Y"
600};
601#define SUFFIXES_START (-24) /* Smallest power for which there is a suffix defined. */
602#define SUFFIXES_END (SUFFIXES_START + (int)((sizeof(suffixes) / sizeof(char *) - 1) * 3))
603
604#define PRINT_WITH_DP2( os, format, ... ) \
605 { \
606 if ( ! f.flags.eng ) { \
607 len = snprintf( buf, size, format, ##__VA_ARGS__ ); \
608 if ( isfinite( f.val ) && ! f.flags.nobsdp ) { /* if number, print decimal point when no fraction or exponent */ \
609 for ( i = 0; i < len && buf[i] != '.' && buf[i] != 'e' && buf[i] != 'E' && \
610 buf[i] != 'p' && buf[i] != 'P'; i += 1 ); /* decimal point or scientific ? */ \
611 if ( i == len ) { \
612 if ( ! f.flags.left ) { \
613 buf[i] = '.'; buf[i + 1] = '\0'; \
614 if ( buf[0] == ' ' ) bufbeg = 1; /* decimal point within width */ \
615 } else { \
616 for ( i = 0; i < len && buf[i] != ' '; i += 1 ); /* trailing blank ? */ \
617 buf[i] = '.'; \
618 if ( i == len ) buf[i + 1] = '\0'; \
619 } /* if */ \
620 } /* if */ \
621 } /* if */ \
622 } else { \
623 int exp10, len2; \
624 eng( f.val, f.pc, exp10 ); /* changes arguments */ \
625 /* printf( "%g %d %d %d %s\n", f.val, f.wd, f.pc, exp10, format ); */ \
626 if ( ! f.flags.left && f.wd > 1 ) { \
627 /* Exponent size: 'e', optional minus sign, number of digits: log10(0) => undefined */ \
628 f.wd -= 1 + (exp10 < 0 ? 1 : 0) + lrint( floor( exp10 == 0 ? 0 : log10( abs( exp10 ) ) ) ) + 1; \
629 if ( f.wd < 1 ) f.wd = 1; \
630 } /* if */ \
631 len = snprintf( buf, size, format, ##__VA_ARGS__ ); \
632 if ( f.flags.left ) { \
633 for ( len -= 1; len > 0 && buf[len] == ' '; len -= 1 ); \
634 len += 1; \
635 } /* if */ \
636 if ( ! f.flags.nobsdp || (exp10 < SUFFIXES_START) || (exp10 > SUFFIXES_END) ) { \
637 len2 = snprintf( &buf[len], size - len, "e%d", (int)exp10 /* ambiguity with function exp10 */ ); \
638 } else { \
639 len2 = snprintf( &buf[len], size - len, "%s", suffixes[(exp10 - SUFFIXES_START) / 3] ); \
640 } /* if */ \
641 if ( f.flags.left && len + len2 < f.wd ) buf[len + len2] = ' '; \
642 } /* if */ \
643 fmt( os, "%s", &buf[bufbeg] ); \
644 }
645
646#define FLOATING_POINT_FMT_IMPL( T, DFMTNP, DFMTP ) \
647forall( ostype & | basic_ostream( ostype ) ) { \
648 static void eng( T &value, int & pc, int & exp10 ) { \
649 exp10 = lrint( floor( log10( abs( value ) ) ) ); /* round to desired precision */ \
650 if ( exp10 < 0 ) exp10 -= 2; \
651 exp10 = floor( exp10, 3 ); \
652 value *= pow( 10.0, -exp10 ); \
653 if ( pc < 0 ) pc = 3; \
654 } /* eng */ \
655\
656 ostype & ?|?( ostype & os, _Ostream_Manip(T) f ) { \
657 enum { size = 48 }; \
658 char buf[size]; \
659 int bufbeg = 0, i, len; \
660\
661 if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) ); \
662 char fmtstr[sizeof(DFMTP) + 8]; /* sizeof includes '\0' */ \
663 if ( ! f.flags.pc ) memcpy( &fmtstr, DFMTNP, sizeof(DFMTNP) ); \
664 else memcpy( &fmtstr, DFMTP, sizeof(DFMTP) ); \
665 int star = 5; /* position before first '*' */ \
666\
667 /* Insert flags into spaces before '*', from right to left. */ \
668 if ( f.flags.left ) { fmtstr[star] = '-'; star -= 1; } \
669 if ( f.flags.sign ) { fmtstr[star] = '+'; star -= 1; } \
670 if ( f.flags.pad0 ) { fmtstr[star] = '0'; star -= 1; } \
671 fmtstr[star] = '\''; star -= 1; /* locale */ \
672 fmtstr[star] = '%'; \
673\
674 if ( ! f.flags.pc ) { /* no precision */ \
675 fmtstr[sizeof(DFMTNP)-2] = f.base; /* sizeof includes '\0' */ \
676 /* printf( "%g %d %s\n", f.val, f.wd, &fmtstr[star] ); */ \
677 PRINT_WITH_DP2( os, &fmtstr[star], f.wd, f.val ) \
678 } else { /* precision */ \
679 fmtstr[sizeof(DFMTP)-2] = f.base; /* sizeof includes '\0' */ \
680 /* printf( "%g %d %d %s\n", f.val, f.wd, f.pc, &fmtstr[star] ); */ \
681 PRINT_WITH_DP2( os, &fmtstr[star], f.wd, f.pc, f.val ) \
682 } /* if */ \
683 return os; \
684 } /* ?|? */ \
685\
686 OSTYPE_VOID_IMPL( _Ostream_Manip(T) ) \
687} // distribution
688
689FLOATING_POINT_FMT_IMPL( double, " * ", " *.* " )
690FLOATING_POINT_FMT_IMPL( long double, " *L ", " *.*L " )
691
692// *********************************** character ***********************************
693
694forall( ostype & | basic_ostream( ostype ) ) {
695 ostype & ?|?( ostype & os, _Ostream_Manip(char) f ) {
696 if ( f.base != 'c' ) { // bespoke binary/octal/hex format
697 _Ostream_Manip(unsigned char) fmtuc @= { f.val, f.wd, f.pc, f.base, {'\0'} };
698 fmtuc.flags.pc = f.flags.pc;
699 fmtuc.flags.nobsdp = f.flags.nobsdp;
700// os | fmtuc | nonl;
701 (ostype &)(os | fmtuc);
702 return os;
703 } // if
704
705 if ( sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
706
707 #define CFMTNP "% * "
708 char fmtstr[sizeof(CFMTNP)]; // sizeof includes '\0'
709 memcpy( &fmtstr, CFMTNP, sizeof(CFMTNP) );
710 int star = 1; // position before first '*'
711
712 // Insert flags into spaces before '*', from right to left.
713 if ( f.flags.left ) { fmtstr[star] = '-'; star -= 1; }
714 fmtstr[star] = '%';
715
716 fmtstr[sizeof(CFMTNP)-2] = f.base; // sizeof includes '\0'
717 // printf( "%d %s\n", f.wd, &fmtstr[star] );
718 fmt( os, &fmtstr[star], f.wd, f.val );
719 return os;
720 } // ?|?
721 OSTYPE_VOID_IMPL( _Ostream_Manip(char) )
722} // distribution
723
724// *********************************** C string ***********************************
725
726forall( ostype & | basic_ostream( ostype ) ) {
727 ostype & ?|?( ostype & os, _Ostream_Manip(const char *) f ) {
728 if ( ! f.val ) return os; // null pointer ?
729
730 if ( f.base != 's' ) { // bespoke binary/octal/hex format
731 _Ostream_Manip(unsigned char) fmtuc @= { 0, f.wd, f.pc, f.base, {'\0'} };
732 fmtuc.flags.pc = f.flags.pc;
733 fmtuc.flags.nobsdp = f.flags.nobsdp;
734 for ( i; 0 ~ @ : @; f.val[i] != '\0' ) {
735 fmtuc.val = f.val[i];
736// os | fmtuc | nonl;
737 (ostype &)(os | fmtuc);
738 } // for
739 return os;
740 } // if
741
742 if ( f.val[0] != '\0' && // null string => no leading separator
743 sepPrt$( os ) ) fmt( os, "%s", sepGetCur$( os ) );
744
745 #define SFMTNP "% * "
746 #define SFMTP "% *.* "
747 char fmtstr[sizeof(SFMTP)]; // sizeof includes '\0'
748 if ( ! f.flags.pc ) memcpy( &fmtstr, SFMTNP, sizeof(SFMTNP) );
749 else memcpy( &fmtstr, SFMTP, sizeof(SFMTP) );
750 int star = 1; // position before first '*'
751
752 // Insert flags into spaces before '*', from right to left.
753 if ( f.flags.left ) { fmtstr[star] = '-'; star -= 1; }
754 fmtstr[star] = '%';
755
756 if ( ! f.flags.pc ) { // no precision
757 // printf( "%d %s\n", f.wd, &fmtstr[star] );
758 fmtstr[sizeof(SFMTNP)-2] = f.base; // sizeof includes '\0'
759 fmt( os, &fmtstr[star], f.wd, f.val );
760 } else { // precision
761 fmtstr[sizeof(SFMTP)-2] = f.base; // sizeof includes '\0'
762 // printf( "%d %d %s\n", f.wd, f.pc, &fmtstr[star] );
763 fmt( os, &fmtstr[star], f.wd, f.pc, f.val );
764 } // if
765 if ( f.val[0] == '\0' ) { nosep( os ); } // null string => no trailing separator
766 return os;
767 } // ?|?
768 OSTYPE_VOID_IMPL( _Ostream_Manip(const char *) )
769} // distribution
770
771
772// *********************************** istream ***********************************
773
774
775forall( istype & | basic_istream( istype ) ) {
776 istype & ?|?( istype & is, bool & b ) {
777 char val[6];
778 fmt( is, "%5s", val );
779 if ( strcmp( val, "true" ) == 0 ) b = true;
780 else if ( strcmp( val, "false" ) == 0 ) b = false;
781 else {
782 fprintf( stderr, "invalid Boolean constant\n" );
783 abort(); // cannot use abort stream
784 } // if
785 return is;
786 } // ?|?
787 ISTYPE_VOID_IMPL( bool & )
788
789 istype & ?|?( istype & is, char & c ) {
790 char temp;
791 for () {
792 fmt( is, "%c", &temp ); // must pass pointer through varg to fmt
793 // do not overwrite parameter with newline unless appropriate
794 if ( temp != '\n' || getANL$( is ) ) { c = temp; break; }
795 if ( eof( is ) ) break;
796 } // for
797 return is;
798 } // ?|?
799 ISTYPE_VOID_IMPL( char & )
800
801 istype & ?|?( istype & is, signed char & sc ) {
802 fmt( is, "%hhi", &sc );
803 return is;
804 } // ?|?
805 ISTYPE_VOID_IMPL( signed char & )
806
807 istype & ?|?( istype & is, unsigned char & usc ) {
808 fmt( is, "%hhi", &usc );
809 return is;
810 } // ?|?
811 ISTYPE_VOID_IMPL( unsigned char & )
812
813 istype & ?|?( istype & is, short int & si ) {
814 fmt( is, "%hi", &si );
815 return is;
816 } // ?|?
817 ISTYPE_VOID_IMPL( short int & )
818
819 istype & ?|?( istype & is, unsigned short int & usi ) {
820 fmt( is, "%hi", &usi );
821 return is;
822 } // ?|?
823 ISTYPE_VOID_IMPL( unsigned short int & )
824
825 istype & ?|?( istype & is, int & i ) {
826 fmt( is, "%i", &i );
827 return is;
828 } // ?|?
829 ISTYPE_VOID_IMPL( int & )
830
831 istype & ?|?( istype & is, unsigned int & ui ) {
832 fmt( is, "%i", &ui );
833 return is;
834 } // ?|?
835 ISTYPE_VOID_IMPL( unsigned int & )
836
837 istype & ?|?( istype & is, long int & li ) {
838 fmt( is, "%li", &li );
839 return is;
840 } // ?|?
841 ISTYPE_VOID_IMPL( long int & )
842
843 istype & ?|?( istype & is, unsigned long int & ulli ) {
844 fmt( is, "%li", &ulli );
845 return is;
846 } // ?|?
847 ISTYPE_VOID_IMPL( unsigned long int & )
848
849 istype & ?|?( istype & is, long long int & lli ) {
850 fmt( is, "%lli", &lli );
851 return is;
852 } // ?|?
853 ISTYPE_VOID_IMPL( long long int & )
854
855 istype & ?|?( istype & is, unsigned long long int & ulli ) {
856 fmt( is, "%lli", &ulli );
857 return is;
858 } // ?|?
859 ISTYPE_VOID_IMPL( unsigned long long int & )
860
861 #if defined( __SIZEOF_INT128__ )
862 istype & ?|?( istype & is, int128 & llli ) {
863 return (istype &)(is | (unsigned int128 &)llli);
864 } // ?|?
865 ISTYPE_VOID_IMPL( int128 & )
866
867 istype & ?|?( istype & is, unsigned int128 & ullli ) {
868 char s[40];
869 bool sign = false;
870
871 if ( fmt( is, " %[-]", s ) == 1 ) sign = true; // skip whitespace, negative sign ?
872 // If the input is too large, the value returned is undefined. If there is no input, no value is returned
873 if ( fmt( is, "%39[0-9]%*[0-9]", s ) == 1 ) { // take first 39 characters, ignore remaining
874 ullli = 0;
875 for ( i; 0 ~ @ : @; s[i] != '\0' ) {
876 ullli = ullli * 10 + s[i] - '0';
877 } // for
878 if ( sign ) ullli = -ullli;
879 } else if ( sign ) ungetc( is, '-' ); // return minus when no digits
880 return is;
881 } // ?|?
882 ISTYPE_VOID_IMPL( unsigned int128 & )
883 #endif // __SIZEOF_INT128__
884
885 istype & ?|?( istype & is, float & f ) {
886 fmt( is, "%f", &f );
887 return is;
888 } // ?|?
889 ISTYPE_VOID_IMPL( float & )
890
891 istype & ?|?( istype & is, double & d ) {
892 fmt( is, "%lf", &d );
893 return is;
894 } // ?|?
895 ISTYPE_VOID_IMPL( double & )
896
897 istype & ?|?( istype & is, long double & ld ) {
898 fmt( is, "%Lf", &ld );
899 return is;
900 } // ?|?
901 ISTYPE_VOID_IMPL( long double & )
902
903 istype & ?|?( istype & is, float _Complex & fc ) {
904 float re, im;
905 fmt( is, "%f%fi", &re, &im );
906 fc = re + im * _Complex_I;
907 return is;
908 } // ?|?
909 ISTYPE_VOID_IMPL( float _Complex & )
910
911 istype & ?|?( istype & is, double _Complex & dc ) {
912 double re, im;
913 fmt( is, "%lf%lfi", &re, &im );
914 dc = re + im * _Complex_I;
915 return is;
916 } // ?|?
917 ISTYPE_VOID_IMPL( double _Complex & )
918
919 istype & ?|?( istype & is, long double _Complex & ldc ) {
920 long double re, im;
921 fmt( is, "%Lf%Lfi", &re, &im );
922 ldc = re + im * _Complex_I;
923 return is;
924 } // ?|?
925 ISTYPE_VOID_IMPL( long double _Complex & )
926
927 istype & ?|?( istype & is, const char fmt[] ) {
928 fmt( is, fmt, "" );
929 return is;
930 } // ?|?
931 ISTYPE_VOID_IMPL( const char * )
932
933 // manipulators
934 istype & ?|?( istype & is, istype & (* manip)( istype & ) ) {
935 return manip( is );
936 } // ?|?
937
938 void ?|?( istype & is, istype & (* manip)( istype & ) ) {
939 manip( is ); ends( is );
940 } // ?|?
941
942 istype & nl( istype & is ) {
943 fmt( is, "%*[^\n]" ); // ignore characters to newline
944 if ( ! eof( is ) && getANL$( is ) ) fmt( is, "%*c" ); // read newline
945 return is;
946 } // nl
947
948 istype & nlOn( istype & is ) {
949 nlOn( is ); // call void returning
950 return is;
951 } // nlOn
952
953 istype & nlOff( istype & is ) {
954 nlOff( is ); // call void returning
955 return is;
956 } // nlOff
957} // distribution
958
959// *********************************** manipulators ***********************************
960
961forall( istype & | basic_istream( istype ) ) {
962 istype & ?|?( istype & is, _Istream_Cskip f ) {
963 // printf( "skip %s %d\n", f.scanset, f.wd );
964 if ( f.scanset ) {
965 int nscanset = strlen(f.scanset);
966 char fmtstr[ sizeof("%*[]") + nscanset ];
967 int pos = 0;
968 fmtstr[pos] = '%'; pos += 1;
969 fmtstr[pos] = '*'; pos += 1;
970 fmtstr[pos] = '['; pos += 1;
971 strcpy( &fmtstr[pos], f.scanset ); pos += nscanset;
972 fmtstr[pos] = ']'; pos += 1;
973 fmtstr[pos] = '\0';
974 fmt( is, fmtstr, (void*)0 ); // last arg is dummy: suppress gcc warning
975 }
976 else for ( f.wd ) fmt( is, "%*c" );
977 return is;
978 }
979 ISTYPE_VOID_IMPL( _Istream_Cskip )
980
981 istype & ?|?( istype & is, _Istream_Cstr f ) {
982 const char * scanset = f.scanset;
983 if ( f.flags.delimiter ) scanset = f.delimiter; // getline ?
984
985 size_t len = 0;
986 if ( scanset ) len = strlen( scanset );
987 char fmtstr[len + 16];
988 int start = 1;
989 fmtstr[0] = '%';
990 if ( f.flags.ignore ) { fmtstr[1] = '*'; start += 1; }
991 // no maximum width necessary because text ignored => width is read width
992 if ( f.wd != -1 ) {
993 // wd is buffer bytes available (for input chars + null terminator)
994 // rwd is count of input chars
995 int rwd;
996 if (f.flags.rwd) {
997 verify (f.wd >= 0);
998 rwd = f.wd;
999 } else {
1000 verify (f.wd >= 1);
1001 rwd = f.wd - 1;
1002 } // if
1003 start += sprintf( &fmtstr[start], "%d", rwd );
1004 }
1005
1006 if ( ! scanset ) {
1007 // %s, %*s, %ws, %*ws
1008 fmtstr[start] = 's'; fmtstr[start + 1] = '\0';
1009 // printf( "cstr %s\n", fmtstr );
1010 } else {
1011 // incl %[xxx], %*[xxx], %w[xxx], %*w[xxx]
1012 // excl %[^xxx], %*[^xxx], %w[^xxx], %*w[^xxx]
1013 fmtstr[start] = '['; start += 1;
1014 if ( f.flags.inex ) { fmtstr[start] = '^'; start += 1; }
1015 strcpy( &fmtstr[start], scanset ); // copy includes '\0'
1016 len += start;
1017 fmtstr[len] = ']'; fmtstr[len + 1] = '\0';
1018 // printf( "incl/excl %s\n", fmtstr );
1019 } // if
1020
1021 int check = f.wd - 2;
1022 if (! f.flags.ignore ) {
1023 f.s[0] = '\0';
1024 if ( ! f.flags.rwd ) f.s[check] = '\0'; // insert sentinel
1025 }
1026 len = fmt( is, fmtstr, f.s );
1027 //fprintf( stderr, "KK %s %zd %d %c %s\n", fmtstr, len, check, f.s[check], f.s );
1028
1029 if ( ! f.flags.ignore && ! f.flags.rwd && f.s[check] != '\0' ) { // sentinel overwritten ?
1030 // buffer filled, but would we have kept going?
1031 if ( ! eof( is ) ) {
1032 char peek;
1033 fmt( is, "%c", &peek );
1034 ungetc( is, peek );
1035 bool hasMore;
1036 if (f.flags.delimiter) { // getline
1037 hasMore = (peek != f.delimiter[0]);
1038 } else if (f.scanset) { // incl/excl
1039 bool peekMatch = strchr(f.scanset, peek) != 0p;
1040 hasMore = f.flags.inex ? (!peekMatch) : (peekMatch);
1041 } else { // %s
1042 hasMore = !isspace(peek);
1043 }
1044 if (hasMore) throw (cstring_length){ &cstring_length_vt };
1045 } // if
1046 } // if
1047
1048 if ( f.flags.delimiter ) { // getline ?
1049 if ( len == 0 ) f.s[0] = '\0'; // empty read => argument unchanged => set empty
1050 if ( ! eof( is ) ) { // ignore delimiter, may not be present because of width
1051 char delimiter;
1052 fmt( is, "%c", &delimiter );
1053 if ( delimiter != f.delimiter[0] ) ungetc( is, delimiter );
1054 } // if
1055 } //if
1056 return is;
1057 } // ?|?
1058 ISTYPE_VOID_IMPL( _Istream_Cstr )
1059
1060 istype & ?|?( istype & is, _Istream_Char f ) {
1061 fmt( is, "%*c" ); // argument variable unused
1062 return is;
1063 } // ?|?
1064 ISTYPE_VOID_IMPL( _Istream_Char )
1065} // distribution
1066
1067#define INPUT_FMT_IMPL( T, CODE ) \
1068forall( istype & | basic_istream( istype ) ) { \
1069 istype & ?|?( istype & is, _Istream_Manip(T) f ) { \
1070 enum { size = 16 }; \
1071 char fmtstr[size]; \
1072 if ( f.wd == -1 ) { \
1073 snprintf( fmtstr, size, "%%%s%s", f.ignore ? "*" : "", CODE ); \
1074 } else { \
1075 snprintf( fmtstr, size, "%%%s%d%s", f.ignore ? "*" : "", f.wd, CODE ); \
1076 } /* if */ \
1077 /* printf( "%d %s %p\n", f.wd, fmtstr, &f.val ); */ \
1078 fmt( is, fmtstr, &f.val ); \
1079 return is; \
1080 } /* ?|? */ \
1081 ISTYPE_VOID_IMPL( _Istream_Manip(T) ) \
1082} // distribution
1083
1084INPUT_FMT_IMPL( signed char, "hhi" )
1085INPUT_FMT_IMPL( unsigned char, "hhi" )
1086INPUT_FMT_IMPL( signed short int, "hi" )
1087INPUT_FMT_IMPL( unsigned short int, "hi" )
1088INPUT_FMT_IMPL( signed int, "i" )
1089INPUT_FMT_IMPL( unsigned int, "i" )
1090INPUT_FMT_IMPL( signed long int, "li" )
1091INPUT_FMT_IMPL( unsigned long int, "li" )
1092INPUT_FMT_IMPL( signed long long int, "lli" )
1093INPUT_FMT_IMPL( unsigned long long int, "lli" )
1094
1095INPUT_FMT_IMPL( float, "f" )
1096INPUT_FMT_IMPL( double, "lf" )
1097INPUT_FMT_IMPL( long double, "Lf" )
1098
1099forall( istype & | basic_istream( istype ) ) {
1100 istype & ?|?( istype & is, _Istream_Manip(float _Complex) fc ) {
1101 float re, im;
1102 _Istream_Manip(float) fmtuc @= { re, fc.wd, fc.ignore };
1103 is | fmtuc;
1104 &fmtuc.val = &im;
1105 is | fmtuc;
1106 if ( ! fc.ignore ) fc.val = re + im * _Complex_I; // re/im are uninitialized for ignore
1107 return is;
1108 } // ?|?
1109 ISTYPE_VOID_IMPL( _Istream_Manip(float _Complex) )
1110
1111 istype & ?|?( istype & is, _Istream_Manip(double _Complex) dc ) {
1112 double re, im;
1113 _Istream_Manip(double) fmtuc @= { re, dc.wd, dc.ignore };
1114 is | fmtuc;
1115 &fmtuc.val = &im;
1116 is | fmtuc;
1117 if ( ! dc.ignore ) dc.val = re + im * _Complex_I; // re/im are uninitialized for ignore
1118 return is;
1119 } // ?|?
1120 ISTYPE_VOID_IMPL( _Istream_Manip(double _Complex) )
1121
1122 istype & ?|?( istype & is, _Istream_Manip(long double _Complex) ldc ) {
1123 long double re, im;
1124 _Istream_Manip(long double) fmtuc @= { re, ldc.wd, ldc.ignore };
1125 is | fmtuc;
1126 &fmtuc.val = &im;
1127 is | fmtuc;
1128 if ( ! ldc.ignore ) ldc.val = re + im * _Complex_I; // re/im are uninitialized for ignore
1129 return is;
1130 } // ?|?
1131 ISTYPE_VOID_IMPL( _Istream_Manip(long double _Complex) )
1132} // distribution
1133
1134
1135// Local Variables: //
1136// tab-width: 4 //
1137// compile-command: "cfa iostream.cfa" //
1138// End: //
Note: See TracBrowser for help on using the repository browser.