mirror of
https://sourceware.org/git/glibc.git
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77a58cad3f
* libio/Makefile [routines]: Remove iofscanf, add iopopen, pclose.
* libio/iofscanf.c: Remove file.
* libio/iogetdelim.c (_IO_getdelim): Correct stupid bug at string
termination.
* libio/iopopen.c: New file from GNU libio.
* libio/memstream.c: Fixed bug in fclose handling. Instead of
providing a close callback we need a finish callback.
* libio/pclose.c: New file. Derived from popen.c in GNU libio.
* posix/gnu/types.h: Fixed typo.
* stdio-common/errnobug.c: fputs returns EOF in error case. Do
not test for != 0.
* stdio-common/printf-parse.h (parse_one_spec): Do not force
padding with ' ' if precision is given. Fix by HJ Lu.
* stdio-common/printf_fp.c: Fix comment.
* stdio-common/tfformat.c, stdio-common/tiformat.c,
stdio-common/tstdiomisc.c: New files from GNU libio test suite.
* stdio-common/tstgetln.c: Provide ssize_t type when testing
libio.
* stdio-common/vfprintf.c (outchar): Use PUTC instead of putc.
(vfprintf): Cleasr args_type array before using it.
When printing 0 as an integer with precision 0 nothing must be
written for the number.
Based on patch by HJ Lu.
* stdio-common/vfscanf.c: Remove fixed input buffer. Now we
have a dynamically extended buffer.
* stdlib/strtod.c: Merge with version in Linux libc. This fixes
some bugs with handling of very small numbers and has different
solution for formaer patches.
* sysdeps/i386/i586/add_n.S, sysdeps/i386/i586/sub_n.S: Rename
macros r1 and r2 to t1, and t2 resp. This is necessary because
glibc headers also define r1.
Tue Dec 5 02:27:32 1995 Ulrich Drepper <drepper@gnu.ai.mit.edu>
* libio/Makefile [routines]: Remove iofscanf, add iopopen, pclose.
* libio/iofscanf.c: Remove file.
* libio/iogetdelim.c (_IO_getdelim): Correct stupid bug at string
termination.
* libio/iopopen.c: New file from GNU libio.
* libio/memstream.c: Fixed bug in fclose handling. Instead of
providing a close callback we need a finish callback.
* libio/pclose.c: New file. Derived from popen.c in GNU libio.
* posix/gnu/types.h: Fixed typo.
* stdio-common/errnobug.c: fputs returns EOF in error case. Do
not test for != 0.
* stdio-common/printf-parse.h (parse_one_spec): Do not force
padding with ' ' if precision is given. Fix by HJ Lu.
* stdio-common/printf_fp.c: Fix comment.
* stdio-common/tfformat.c, stdio-common/tiformat.c,
stdio-common/tstdiomisc.c: New files from GNU libio test suite.
* stdio-common/tstgetln.c: Provide ssize_t type when testing
libio.
* stdio-common/vfprintf.c (outchar): Use PUTC instead of putc.
(vfprintf): Cleasr args_type array before using it.
When printing 0 as an integer with precision 0 nothing must be
written for the number.
Based on patch by HJ Lu.
* stdio-common/vfscanf.c: Remove fixed input buffer. Now we
have a dynamically extended buffer.
* stdlib/strtod.c: Merge with version in Linux libc. This fixes
some bugs with handling of very small numbers and has different
solution for formaer patches.
* sysdeps/i386/i586/add_n.S, sysdeps/i386/i586/sub_n.S: Rename
macros r1 and r2 to t1, and t2 resp. This is necessary because
glibc headers also define r1.
888 lines
25 KiB
C
888 lines
25 KiB
C
/* Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <ctype.h>
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#include <errno.h>
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#include <float.h>
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#include <limits.h>
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#include <math.h>
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#include <printf.h>
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#include <stdarg.h>
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#include <stdlib.h>
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#include <string.h>
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#include <printf.h>
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#include <stddef.h>
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#include "_itoa.h"
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#include "../locale/localeinfo.h"
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/* Include the shared code for parsing the format string. */
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#include "printf-parse.h"
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/* This function from the GNU C library is also used in libio.
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To compile for use in libio, compile with -DUSE_IN_LIBIO. */
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#ifdef USE_IN_LIBIO
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/* This code is for use in libio. */
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#include <libioP.h>
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#define PUT(f, s, n) _IO_sputn (f, s, n)
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#define PAD(padchar) \
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if (specs[cnt].info.width > 0) \
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done += _IO_padn (s, padchar, specs[cnt].info.width)
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#define PUTC(c, f) _IO_putc (c, f)
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#define vfprintf _IO_vfprintf
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#define size_t _IO_size_t
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#define FILE _IO_FILE
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#define va_list _IO_va_list
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#undef BUFSIZ
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#define BUFSIZ _IO_BUFSIZ
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#define ARGCHECK(s, format) \
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do \
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{ \
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/* Check file argument for consistence. */ \
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CHECK_FILE (s, -1); \
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if (s->_flags & _IO_NO_WRITES || format == NULL) \
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{ \
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MAYBE_SET_EINVAL; \
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return -1; \
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} \
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} while (0)
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#define UNBUFFERED_P(s) ((s)->_IO_file_flags & _IO_UNBUFFERED)
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#else /* ! USE_IN_LIBIO */
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/* This code is for use in the GNU C library. */
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#include <stdio.h>
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#define PUTC(c, f) putc (c, f)
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#define PUT(f, s, n) fwrite (s, 1, n, f)
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ssize_t __printf_pad __P ((FILE *, char pad, size_t n));
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#define PAD(padchar) \
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if (specs[cnt].info.width > 0) \
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{ if (__printf_pad (s, padchar, specs[cnt].info.width) == -1) \
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return -1; else done += specs[cnt].info.width; }
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#define ARGCHECK(s, format) \
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do \
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{ \
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/* Check file argument for consistence. */ \
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if (!__validfp(s) || !s->__mode.__write || format == NULL) \
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{ \
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errno = EINVAL; \
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return -1; \
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} \
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if (!s->__seen) \
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{ \
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if (__flshfp (s, EOF) == EOF) \
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return -1; \
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} \
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} while (0)
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#define UNBUFFERED_P(s) ((s)->__buffer == NULL)
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#endif /* USE_IN_LIBIO */
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#define outchar(x) \
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do \
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{ \
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register const int outc = (x); \
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if (PUTC (outc, s) == EOF) \
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return -1; \
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else \
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++done; \
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} while (0)
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#define outstring(string, len) \
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do \
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{ \
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if (len > 20) \
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{ \
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if (PUT (s, string, len) != len) \
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return -1; \
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done += len; \
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} \
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else \
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{ \
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register const char *cp = string; \
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register int l = len; \
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while (l-- > 0) \
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outchar (*cp++); \
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} \
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} while (0)
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/* Helper function to provide temporary buffering for unbuffered streams. */
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static int buffered_vfprintf __P ((FILE *stream, const char *fmt, va_list));
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static printf_function printf_unknown;
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extern printf_function **__printf_function_table;
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static char *group_number __P ((char *, char *, const char *, wchar_t));
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int
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vfprintf (s, format, ap)
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register FILE *s;
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const char *format;
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va_list ap;
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{
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/* The character used as thousands separator. */
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wchar_t thousands_sep;
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/* The string describing the size of groups of digits. */
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const char *grouping;
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/* Array with information about the needed arguments. This has to be
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dynamically extendable. */
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size_t nspecs;
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size_t nspecs_max;
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struct printf_spec *specs;
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/* The number of arguments the format string requests. This will
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determine the size of the array needed to store the argument
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attributes. */
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size_t nargs;
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int *args_type;
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union printf_arg *args_value;
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/* Positional parameters refer to arguments directly. This could also
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determine the maximum number of arguments. Track the maximum number. */
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size_t max_ref_arg;
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/* End of leading constant string. */
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const char *lead_str_end;
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/* Number of characters written. */
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register size_t done = 0;
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/* Running pointer through format string. */
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const char *f;
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/* Just a counter. */
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int cnt;
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ARGCHECK (s, format);
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if (UNBUFFERED_P (s))
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/* Use a helper function which will allocate a local temporary buffer
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for the stream and then call us again. */
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return buffered_vfprintf (s, format, ap);
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/* Reset multibyte characters to their initial state. */
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(void) mblen ((char *) NULL, 0);
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/* Figure out the thousands separator character. */
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if (mbtowc (&thousands_sep, _NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP),
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strlen (_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP))) <= 0)
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thousands_sep = (wchar_t) *_NL_CURRENT (LC_NUMERIC, THOUSANDS_SEP);
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grouping = _NL_CURRENT (LC_NUMERIC, GROUPING);
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if (*grouping == '\0' || *grouping == CHAR_MAX || thousands_sep == L'\0')
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grouping = NULL;
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nspecs_max = 32; /* A more or less arbitrary start value. */
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specs = alloca (nspecs_max * sizeof (struct printf_spec));
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nspecs = 0;
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nargs = 0;
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max_ref_arg = 0;
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/* Find the first format specifier. */
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lead_str_end = find_spec (format);
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for (f = lead_str_end; *f != '\0'; f = specs[nspecs++].next_fmt)
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{
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if (nspecs >= nspecs_max)
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{
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/* Extend the array of format specifiers. */
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struct printf_spec *old = specs;
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nspecs_max *= 2;
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specs = alloca (nspecs_max * sizeof (struct printf_spec));
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if (specs == &old[nspecs])
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/* Stack grows up, OLD was the last thing allocated; extend it. */
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nspecs_max += nspecs_max / 2;
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else
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{
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/* Copy the old array's elements to the new space. */
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memcpy (specs, old, nspecs * sizeof (struct printf_spec));
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if (old == &specs[nspecs])
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/* Stack grows down, OLD was just below the new SPECS.
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We can use that space when the new space runs out. */
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nspecs_max += nspecs_max / 2;
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}
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}
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/* Parse the format specifier. */
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nargs += parse_one_spec (f, nargs, &specs[nspecs], &max_ref_arg);
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}
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/* Determine the number of arguments the format string consumes. */
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nargs = MAX (nargs, max_ref_arg);
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/* Allocate memory for the argument descriptions. */
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args_type = alloca (nargs * sizeof (int));
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memset (args_type, 0, nargs * sizeof (int));
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args_value = alloca (nargs * sizeof (union printf_arg));
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/* XXX Could do sanity check here: If any element in ARGS_TYPE is
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still zero after this loop, format is invalid. For now we simply
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use 0 as the value. */
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/* Fill in the types of all the arguments. */
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for (cnt = 0; cnt < nspecs; ++cnt)
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{
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/* If the width is determined by an argument this is an int. */
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if (specs[cnt].width_arg != -1)
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args_type[specs[cnt].width_arg] = PA_INT;
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/* If the precision is determined by an argument this is an int. */
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if (specs[cnt].prec_arg != -1)
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args_type[specs[cnt].prec_arg] = PA_INT;
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switch (specs[cnt].ndata_args)
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{
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case 0: /* No arguments. */
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break;
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case 1: /* One argument; we already have the type. */
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args_type[specs[cnt].data_arg] = specs[cnt].data_arg_type;
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break;
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default:
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/* We have more than one argument for this format spec. We must
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call the arginfo function again to determine all the types. */
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(void) (*__printf_arginfo_table[specs[cnt].info.spec])
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(&specs[cnt].info,
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specs[cnt].ndata_args, &args_type[specs[cnt].data_arg]);
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break;
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}
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}
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/* Now we know all the types and the order. Fill in the argument values. */
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for (cnt = 0; cnt < nargs; ++cnt)
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switch (args_type[cnt])
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{
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#define T(tag, mem, type) \
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case tag: \
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args_value[cnt].mem = va_arg (ap, type); \
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break
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T (PA_CHAR, pa_char, int); /* Promoted. */
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T (PA_INT|PA_FLAG_SHORT, pa_short_int, int); /* Promoted. */
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T (PA_INT, pa_int, int);
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T (PA_INT|PA_FLAG_LONG, pa_long_int, long int);
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T (PA_INT|PA_FLAG_LONG_LONG, pa_long_long_int, long long int);
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T (PA_FLOAT, pa_float, double); /* Promoted. */
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T (PA_DOUBLE, pa_double, double);
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T (PA_DOUBLE|PA_FLAG_LONG_DOUBLE, pa_long_double, long double);
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T (PA_STRING, pa_string, const char *);
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T (PA_POINTER, pa_pointer, void *);
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#undef T
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default:
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if ((args_type[cnt] & PA_FLAG_PTR) != 0)
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args_value[cnt].pa_pointer = va_arg (ap, void *);
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else
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args_value[cnt].pa_long_double = 0.0;
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break;
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}
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/* Write the literal text before the first format. */
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outstring (format, lead_str_end - format);
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/* Now walk through all format specifiers and process them. */
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for (cnt = 0; cnt < nspecs; ++cnt)
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{
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printf_function *function; /* Auxiliary function to do output. */
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int is_neg; /* Decimal integer is negative. */
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int base; /* Base of a number to be written. */
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unsigned long long int num; /* Integral number to be written. */
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const char *str; /* String to be written. */
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char errorbuf[1024]; /* Buffer sometimes used by %m. */
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if (specs[cnt].width_arg != -1)
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{
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/* Extract the field width from an argument. */
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specs[cnt].info.width = args_value[specs[cnt].width_arg].pa_int;
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if (specs[cnt].info.width < 0)
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/* If the width value is negative left justification is selected
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and the value is taken as being positive. */
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{
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specs[cnt].info.width = -specs[cnt].info.width;
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specs[cnt].info.left = 1;
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}
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}
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if (specs[cnt].prec_arg != -1)
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{
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/* Extract the precision from an argument. */
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specs[cnt].info.prec = args_value[specs[cnt].prec_arg].pa_int;
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if (specs[cnt].info.prec < 0)
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/* If the precision is negative the precision is omitted. */
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specs[cnt].info.prec = -1;
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}
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/* Check for a user-defined handler for this spec. */
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function = (__printf_function_table == NULL ? NULL :
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__printf_function_table[specs[cnt].info.spec]);
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if (function != NULL)
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use_function: /* Built-in formats with helpers use this. */
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{
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int function_done;
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unsigned int i;
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const void *ptr[specs[cnt].ndata_args];
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/* Fill in an array of pointers to the argument values. */
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for (i = 0; i < specs[cnt].ndata_args; ++i)
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ptr[i] = &args_value[specs[cnt].data_arg + i];
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/* Call the function. */
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function_done = (*function) (s, &specs[cnt].info, ptr);
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/* If an error occured don't do any further work. */
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if (function_done < 0)
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return -1;
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done += function_done;
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}
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else
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switch (specs[cnt].info.spec)
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{
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case '%':
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/* Write a literal "%". */
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outchar ('%');
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break;
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case 'i':
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case 'd':
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{
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long long int signed_num;
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/* Decimal integer. */
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base = 10;
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if (specs[cnt].info.is_longlong)
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signed_num = args_value[specs[cnt].data_arg].pa_long_long_int;
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else if (specs[cnt].info.is_long)
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signed_num = args_value[specs[cnt].data_arg].pa_long_int;
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else if (!specs[cnt].info.is_short)
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signed_num = args_value[specs[cnt].data_arg].pa_int;
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else
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signed_num = args_value[specs[cnt].data_arg].pa_short_int;
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is_neg = signed_num < 0;
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num = is_neg ? (- signed_num) : signed_num;
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goto number;
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}
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case 'u':
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/* Decimal unsigned integer. */
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base = 10;
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goto unsigned_number;
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case 'o':
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/* Octal unsigned integer. */
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base = 8;
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goto unsigned_number;
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case 'X':
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/* Hexadecimal unsigned integer. */
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case 'x':
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/* Hex with lower-case digits. */
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base = 16;
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unsigned_number:
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/* Unsigned number of base BASE. */
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if (specs[cnt].info.is_longlong)
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num = args_value[specs[cnt].data_arg].pa_u_long_long_int;
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else if (specs[cnt].info.is_long)
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num = args_value[specs[cnt].data_arg].pa_u_long_int;
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else if (!specs[cnt].info.is_short)
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num = args_value[specs[cnt].data_arg].pa_u_int;
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else
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num = args_value[specs[cnt].data_arg].pa_u_short_int;
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/* ANSI only specifies the `+' and
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` ' flags for signed conversions. */
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is_neg = 0;
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specs[cnt].info.showsign = 0;
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specs[cnt].info.space = 0;
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number:
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/* Number of base BASE. */
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{
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char work[BUFSIZ];
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char *const workend = &work[sizeof(work) - 1];
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register char *w;
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if (specs[cnt].info.prec == -1)
|
||
/* Supply a default precision if none was given. */
|
||
specs[cnt].info.prec = 1;
|
||
else
|
||
/* We have to take care for the '0' flag. If a
|
||
precision is given it must be ignored. */
|
||
specs[cnt].info.pad = ' ';
|
||
|
||
/* If the precision is 0 and the number is 0 nothing has
|
||
to be written for the number. */
|
||
if (specs[cnt].info.prec == 0 && num == 0)
|
||
w = workend;
|
||
else
|
||
{
|
||
/* Put the number in WORK. */
|
||
w = _itoa (num, workend + 1, base,
|
||
specs[cnt].info.spec == 'X');
|
||
w -= 1;
|
||
if (specs[cnt].info.group && grouping)
|
||
w = group_number (w, workend, grouping, thousands_sep);
|
||
}
|
||
specs[cnt].info.width -= workend - w;
|
||
specs[cnt].info.prec -= workend - w;
|
||
|
||
if (num != 0 && specs[cnt].info.alt && base == 8
|
||
&& specs[cnt].info.prec <= 0)
|
||
{
|
||
/* Add octal marker. */
|
||
*w-- = '0';
|
||
--specs[cnt].info.width;
|
||
}
|
||
|
||
if (specs[cnt].info.prec > 0)
|
||
{
|
||
/* Add zeros to the precision. */
|
||
specs[cnt].info.width -= specs[cnt].info.prec;
|
||
while (specs[cnt].info.prec-- > 0)
|
||
*w-- = '0';
|
||
}
|
||
|
||
if (num != 0 && specs[cnt].info.alt && base == 16)
|
||
/* Account for 0X hex marker. */
|
||
specs[cnt].info.width -= 2;
|
||
|
||
if (is_neg || specs[cnt].info.showsign || specs[cnt].info.space)
|
||
--specs[cnt].info.width;
|
||
|
||
if (!specs[cnt].info.left && specs[cnt].info.pad == ' ')
|
||
PAD (' ');
|
||
|
||
if (is_neg)
|
||
outchar ('-');
|
||
else if (specs[cnt].info.showsign)
|
||
outchar ('+');
|
||
else if (specs[cnt].info.space)
|
||
outchar (' ');
|
||
|
||
if (num != 0 && specs[cnt].info.alt && base == 16)
|
||
{
|
||
outchar ('0');
|
||
outchar (specs[cnt].info.spec);
|
||
}
|
||
|
||
if (!specs[cnt].info.left && specs[cnt].info.pad == '0')
|
||
PAD ('0');
|
||
|
||
/* Write the number. */
|
||
while (++w <= workend)
|
||
outchar (*w);
|
||
|
||
if (specs[cnt].info.left)
|
||
PAD (' ');
|
||
}
|
||
break;
|
||
|
||
case 'e':
|
||
case 'E':
|
||
case 'f':
|
||
case 'g':
|
||
case 'G':
|
||
{
|
||
/* Floating-point number. This is handled by printf_fp.c. */
|
||
extern printf_function __printf_fp;
|
||
function = __printf_fp;
|
||
goto use_function;
|
||
}
|
||
|
||
case 'c':
|
||
/* Character. */
|
||
--specs[cnt].info.width;/* Account for the character itself. */
|
||
if (!specs[cnt].info.left)
|
||
PAD (' ');
|
||
outchar ((unsigned char) args_value[specs[cnt].data_arg].pa_char);
|
||
if (specs[cnt].info.left)
|
||
PAD (' ');
|
||
break;
|
||
|
||
case 's':
|
||
{
|
||
static const char null[] = "(null)";
|
||
size_t len;
|
||
|
||
str = args_value[specs[cnt].data_arg].pa_string;
|
||
|
||
string:
|
||
|
||
if (str == NULL)
|
||
{
|
||
/* Write "(null)" if there's space. */
|
||
if (specs[cnt].info.prec == -1
|
||
|| specs[cnt].info.prec >= (int) sizeof (null) - 1)
|
||
{
|
||
str = null;
|
||
len = sizeof (null) - 1;
|
||
}
|
||
else
|
||
{
|
||
str = "";
|
||
len = 0;
|
||
}
|
||
}
|
||
else if (specs[cnt].info.prec != -1)
|
||
{
|
||
/* Search for the end of the string, but don't search
|
||
past the length specified by the precision. */
|
||
const char *end = memchr (str, '\0', specs[cnt].info.prec);
|
||
if (end)
|
||
len = end - str;
|
||
else
|
||
len = specs[cnt].info.prec;
|
||
}
|
||
else
|
||
len = strlen (str);
|
||
|
||
specs[cnt].info.width -= len;
|
||
|
||
if (!specs[cnt].info.left)
|
||
PAD (' ');
|
||
outstring (str, len);
|
||
if (specs[cnt].info.left)
|
||
PAD (' ');
|
||
}
|
||
break;
|
||
|
||
case 'p':
|
||
/* Generic pointer. */
|
||
{
|
||
const void *ptr;
|
||
ptr = args_value[specs[cnt].data_arg].pa_pointer;
|
||
if (ptr != NULL)
|
||
{
|
||
/* If the pointer is not NULL, write it as a %#x spec. */
|
||
base = 16;
|
||
num = (unsigned long long int) (unsigned long int) ptr;
|
||
is_neg = 0;
|
||
specs[cnt].info.alt = 1;
|
||
specs[cnt].info.spec = 'x';
|
||
specs[cnt].info.group = 0;
|
||
goto number;
|
||
}
|
||
else
|
||
{
|
||
/* Write "(nil)" for a nil pointer. */
|
||
str = "(nil)";
|
||
/* Make sure the full string "(nil)" is printed. */
|
||
if (specs[cnt].info.prec < 5)
|
||
specs[cnt].info.prec = 5;
|
||
goto string;
|
||
}
|
||
}
|
||
break;
|
||
|
||
case 'n':
|
||
/* Answer the count of characters written. */
|
||
if (specs[cnt].info.is_longlong)
|
||
*(long long int *)
|
||
args_value[specs[cnt].data_arg].pa_pointer = done;
|
||
else if (specs[cnt].info.is_long)
|
||
*(long int *)
|
||
args_value[specs[cnt].data_arg].pa_pointer = done;
|
||
else if (!specs[cnt].info.is_short)
|
||
*(int *)
|
||
args_value[specs[cnt].data_arg].pa_pointer = done;
|
||
else
|
||
*(short int *)
|
||
args_value[specs[cnt].data_arg].pa_pointer = done;
|
||
break;
|
||
|
||
case 'm':
|
||
{
|
||
extern char *_strerror_internal __P ((int, char *buf, size_t));
|
||
str = _strerror_internal (errno, errorbuf, sizeof errorbuf);
|
||
goto string;
|
||
}
|
||
|
||
default:
|
||
/* Unrecognized format specifier. */
|
||
function = printf_unknown;
|
||
goto use_function;
|
||
}
|
||
|
||
/* Write the following constant string. */
|
||
outstring (specs[cnt].end_of_fmt,
|
||
specs[cnt].next_fmt - specs[cnt].end_of_fmt);
|
||
}
|
||
|
||
return done;
|
||
}
|
||
|
||
#ifdef USE_IN_LIBIO
|
||
# undef vfprintf
|
||
# ifdef strong_alias
|
||
/* This is for glibc. */
|
||
strong_alias (_IO_vfprintf, vfprintf)
|
||
# else
|
||
# if defined __ELF__ || defined __GNU_LIBRARY__
|
||
# include <gnu-stabs.h>
|
||
# ifdef weak_alias
|
||
weak_alias (_IO_vfprintf, vfprintf);
|
||
# endif
|
||
# endif
|
||
# endif
|
||
#endif
|
||
|
||
|
||
/* Handle an unknown format specifier. This prints out a canonicalized
|
||
representation of the format spec itself. */
|
||
|
||
static int
|
||
printf_unknown (s, info, args)
|
||
FILE *s;
|
||
const struct printf_info *info;
|
||
const void **const args;
|
||
{
|
||
int done = 0;
|
||
char work[BUFSIZ];
|
||
char *const workend = &work[sizeof(work) - 1];
|
||
register char *w;
|
||
|
||
outchar ('%');
|
||
|
||
if (info->alt)
|
||
outchar ('#');
|
||
if (info->group)
|
||
outchar ('\'');
|
||
if (info->showsign)
|
||
outchar ('+');
|
||
else if (info->space)
|
||
outchar (' ');
|
||
if (info->left)
|
||
outchar ('-');
|
||
if (info->pad == '0')
|
||
outchar ('0');
|
||
|
||
if (info->width != 0)
|
||
{
|
||
w = _itoa (info->width, workend + 1, 10, 0);
|
||
while (++w <= workend)
|
||
outchar (*w);
|
||
}
|
||
|
||
if (info->prec != -1)
|
||
{
|
||
outchar ('.');
|
||
w = _itoa (info->prec, workend + 1, 10, 0);
|
||
while (++w <= workend)
|
||
outchar (*w);
|
||
}
|
||
|
||
if (info->spec != '\0')
|
||
outchar (info->spec);
|
||
|
||
return done;
|
||
}
|
||
|
||
/* Group the digits according to the grouping rules of the current locale.
|
||
The interpretation of GROUPING is as in `struct lconv' from <locale.h>. */
|
||
|
||
static char *
|
||
group_number (char *w, char *workend, const char *grouping,
|
||
wchar_t thousands_sep)
|
||
{
|
||
int len;
|
||
char *src, *s;
|
||
|
||
/* We treat all negative values like CHAR_MAX. */
|
||
|
||
if (*grouping == CHAR_MAX || *grouping < 0)
|
||
/* No grouping should be done. */
|
||
return w;
|
||
|
||
len = *grouping;
|
||
|
||
/* Copy existing string so that nothing gets overwritten. */
|
||
src = (char *) alloca (workend - w);
|
||
memcpy (src, w + 1, workend - w);
|
||
s = &src[workend - w - 1];
|
||
w = workend;
|
||
|
||
/* Process all characters in the string. */
|
||
while (s >= src)
|
||
{
|
||
*w-- = *s--;
|
||
|
||
if (--len == 0 && s >= src)
|
||
{
|
||
/* A new group begins. */
|
||
*w-- = thousands_sep;
|
||
|
||
len = *grouping++;
|
||
if (*grouping == '\0')
|
||
/* The previous grouping repeats ad infinitum. */
|
||
--grouping;
|
||
else if (*grouping == CHAR_MAX || *grouping < 0)
|
||
{
|
||
/* No further grouping to be done.
|
||
Copy the rest of the number. */
|
||
do
|
||
*w-- = *s--;
|
||
while (s >= src);
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
return w;
|
||
}
|
||
|
||
#ifdef USE_IN_LIBIO
|
||
/* Helper "class" for `fprintf to unbuffered': creates a temporary buffer. */
|
||
struct helper_file
|
||
{
|
||
struct _IO_FILE_plus _f;
|
||
_IO_FILE *_put_stream;
|
||
};
|
||
|
||
static int
|
||
_IO_helper_overflow (s, c)
|
||
_IO_FILE *s;
|
||
int c;
|
||
{
|
||
_IO_FILE *target = ((struct helper_file*) s)->_put_stream;
|
||
int used = s->_IO_write_ptr - s->_IO_write_base;
|
||
if (used)
|
||
{
|
||
_IO_size_t written = _IO_sputn (target, s->_IO_write_base, used);
|
||
s->_IO_write_ptr -= written;
|
||
}
|
||
return _IO_putc (c, s);
|
||
}
|
||
|
||
static const struct _IO_jump_t _IO_helper_jumps =
|
||
{
|
||
JUMP_INIT_DUMMY,
|
||
JUMP_INIT (finish, _IO_default_finish),
|
||
JUMP_INIT (overflow, _IO_helper_overflow),
|
||
JUMP_INIT (underflow, _IO_default_underflow),
|
||
JUMP_INIT (uflow, _IO_default_uflow),
|
||
JUMP_INIT (pbackfail, _IO_default_pbackfail),
|
||
JUMP_INIT (xsputn, _IO_default_xsputn),
|
||
JUMP_INIT (xsgetn, _IO_default_xsgetn),
|
||
JUMP_INIT (seekoff, _IO_default_seekoff),
|
||
JUMP_INIT (seekpos, _IO_default_seekpos),
|
||
JUMP_INIT (setbuf, _IO_default_setbuf),
|
||
JUMP_INIT (sync, _IO_default_sync),
|
||
JUMP_INIT (doallocate, _IO_default_doallocate),
|
||
JUMP_INIT (read, _IO_default_read),
|
||
JUMP_INIT (write, _IO_default_write),
|
||
JUMP_INIT (seek, _IO_default_seek),
|
||
JUMP_INIT (close, _IO_default_close),
|
||
JUMP_INIT (stat, _IO_default_stat)
|
||
};
|
||
|
||
static int
|
||
buffered_vfprintf (s, format, args)
|
||
register _IO_FILE *s;
|
||
char const *format;
|
||
_IO_va_list args;
|
||
{
|
||
char buf[_IO_BUFSIZ];
|
||
struct helper_file helper;
|
||
register _IO_FILE *hp = (_IO_FILE *) &helper;
|
||
int result, to_flush;
|
||
|
||
/* Initialize helper. */
|
||
helper._put_stream = s;
|
||
hp->_IO_write_base = buf;
|
||
hp->_IO_write_ptr = buf;
|
||
hp->_IO_write_end = buf + sizeof buf;
|
||
hp->_IO_file_flags = _IO_MAGIC|_IO_NO_READS;
|
||
_IO_JUMPS (hp) = (struct _IO_jump_t *) &_IO_helper_jumps;
|
||
|
||
/* Now print to helper instead. */
|
||
result = _IO_vfprintf (hp, format, args);
|
||
|
||
/* Now flush anything from the helper to the S. */
|
||
if ((to_flush = hp->_IO_write_ptr - hp->_IO_write_base) > 0)
|
||
{
|
||
if (_IO_sputn (s, hp->_IO_write_base, to_flush) != to_flush)
|
||
return -1;
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
#else /* !USE_IN_LIBIO */
|
||
|
||
static int
|
||
buffered_vfprintf (s, format, args)
|
||
register FILE *s;
|
||
char const *format;
|
||
va_list args;
|
||
{
|
||
char buf[BUFSIZ];
|
||
int result;
|
||
|
||
s->__bufp = s->__buffer = buf;
|
||
s->__bufsize = sizeof buf;
|
||
s->__put_limit = s->__buffer + s->__bufsize;
|
||
s->__get_limit = s->__buffer;
|
||
|
||
/* Now use buffer to print. */
|
||
result = vfprintf (s, format, args);
|
||
|
||
if (fflush (s) == EOF)
|
||
result = -1;
|
||
s->__buffer = s->__bufp = s->__get_limit = s->__put_limit = NULL;
|
||
s->__bufsize = 0;
|
||
|
||
return result;
|
||
}
|
||
|
||
|
||
/* Pads string with given number of a specified character.
|
||
This code is taken from iopadn.c of the GNU I/O library. */
|
||
#define PADSIZE 16
|
||
static const char blanks[PADSIZE] =
|
||
{' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '};
|
||
static const char zeroes[PADSIZE] =
|
||
{'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'};
|
||
|
||
ssize_t
|
||
__printf_pad (s, pad, count)
|
||
FILE *s;
|
||
char pad;
|
||
size_t count;
|
||
{
|
||
const char *padptr;
|
||
register size_t i;
|
||
|
||
padptr = pad == ' ' ? blanks : zeroes;
|
||
|
||
for (i = count; i >= PADSIZE; i -= PADSIZE)
|
||
if (PUT (s, padptr, PADSIZE) != PADSIZE)
|
||
return -1;
|
||
if (i > 0)
|
||
if (PUT (s, padptr, i) != i)
|
||
return -1;
|
||
|
||
return count;
|
||
}
|
||
#undef PADSIZE
|
||
#endif /* USE_IN_LIBIO */
|