8a16b7a18f
Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point.
693 lines
17 KiB
C
693 lines
17 KiB
C
/*-
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Copyright (c) 2005 Poul-Henning Kamp
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* Copyright (c) 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Chris Torek.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include "namespace.h"
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#include <err.h>
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#include <sys/types.h>
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#include <stdio.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <locale.h>
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#include <stdint.h>
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#include <assert.h>
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#include <stdarg.h>
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#include <namespace.h>
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#include <string.h>
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#include <wchar.h>
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#include "un-namespace.h"
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#include "local.h"
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#include "printf.h"
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#include "fvwrite.h"
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int __use_xprintf = -1;
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/* private stuff -----------------------------------------------------*/
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union arg {
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int intarg;
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long longarg;
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intmax_t intmaxarg;
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#ifndef NO_FLOATING_POINT
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double doublearg;
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long double longdoublearg;
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#endif
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wint_t wintarg;
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char *pchararg;
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wchar_t *pwchararg;
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void *pvoidarg;
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};
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/*
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* Macros for converting digits to letters and vice versa
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*/
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#define to_digit(c) ((c) - '0')
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#define is_digit(c) (((unsigned)to_digit(c)) <= 9)
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/* various globals ---------------------------------------------------*/
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const char __lowercase_hex[17] = "0123456789abcdef?"; /*lint !e784 */
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const char __uppercase_hex[17] = "0123456789ABCDEF?"; /*lint !e784 */
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#define PADSIZE 16
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static char blanks[PADSIZE] =
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{' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' ',' '};
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static char zeroes[PADSIZE] =
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{'0','0','0','0','0','0','0','0','0','0','0','0','0','0','0','0'};
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/* printing and padding functions ------------------------------------*/
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#define NIOV 8
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struct __printf_io {
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FILE *fp;
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struct __suio uio;
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struct __siov iov[NIOV];
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struct __siov *iovp;
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};
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static void
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__printf_init(struct __printf_io *io)
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{
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io->uio.uio_iov = io->iovp = &io->iov[0];
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io->uio.uio_resid = 0;
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io->uio.uio_iovcnt = 0;
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}
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void
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__printf_flush(struct __printf_io *io)
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{
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__sfvwrite(io->fp, &io->uio);
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__printf_init(io);
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}
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int
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__printf_puts(struct __printf_io *io, const void *ptr, int len)
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{
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if (io->fp->_flags & __SERR)
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return (0);
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if (len == 0)
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return (0);
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io->iovp->iov_base = __DECONST(void *, ptr);
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io->iovp->iov_len = len;
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io->uio.uio_resid += len;
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io->iovp++;
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io->uio.uio_iovcnt++;
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if (io->uio.uio_iovcnt >= NIOV)
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__printf_flush(io);
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return (len);
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}
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int
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__printf_pad(struct __printf_io *io, int howmany, int zero)
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{
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int n;
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const char *with;
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int ret = 0;
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if (zero)
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with = zeroes;
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else
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with = blanks;
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if ((n = (howmany)) > 0) {
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while (n > PADSIZE) {
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ret += __printf_puts(io, with, PADSIZE);
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n -= PADSIZE;
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}
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ret += __printf_puts(io, with, n);
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}
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return (ret);
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}
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int
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__printf_out(struct __printf_io *io, const struct printf_info *pi, const void *ptr, int len)
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{
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int ret = 0;
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if ((!pi->left) && pi->width > len)
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ret += __printf_pad(io, pi->width - len, pi->pad == '0');
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ret += __printf_puts(io, ptr, len);
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if (pi->left && pi->width > len)
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ret += __printf_pad(io, pi->width - len, pi->pad == '0');
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return (ret);
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}
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/* percent handling -------------------------------------------------*/
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static int
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__printf_arginfo_pct(const struct printf_info *pi __unused, size_t n __unused, int *argt __unused)
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{
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return (0);
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}
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static int
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__printf_render_pct(struct __printf_io *io, const struct printf_info *pi __unused, const void *const *arg __unused)
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{
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return (__printf_puts(io, "%", 1));
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}
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/* 'n' ---------------------------------------------------------------*/
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static int
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__printf_arginfo_n(const struct printf_info *pi, size_t n, int *argt)
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{
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assert(n >= 1);
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argt[0] = PA_POINTER;
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return (1);
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}
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/*
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* This is a printf_render so that all output has been flushed before it
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* gets called.
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*/
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static int
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__printf_render_n(FILE *io __unused, const struct printf_info *pi, const void *const *arg)
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{
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if (pi->is_char)
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**((signed char **)arg[0]) = (signed char)pi->sofar;
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else if (pi->is_short)
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**((short **)arg[0]) = (short)pi->sofar;
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else if (pi->is_long)
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**((long **)arg[0]) = pi->sofar;
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else if (pi->is_long_double)
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**((long long **)arg[0]) = pi->sofar;
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else if (pi->is_intmax)
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**((intmax_t **)arg[0]) = pi->sofar;
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else if (pi->is_ptrdiff)
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**((ptrdiff_t **)arg[0]) = pi->sofar;
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else if (pi->is_quad)
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**((quad_t **)arg[0]) = pi->sofar;
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else if (pi->is_size)
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**((size_t **)arg[0]) = pi->sofar;
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else
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**((int **)arg[0]) = pi->sofar;
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return (0);
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}
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/* table -------------------------------------------------------------*/
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/*lint -esym(785, printf_tbl) */
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static struct {
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printf_arginfo_function *arginfo;
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printf_function *gnurender;
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printf_render *render;
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} printf_tbl[256] = {
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['%'] = { __printf_arginfo_pct, NULL, __printf_render_pct },
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['A'] = { __printf_arginfo_float, NULL, __printf_render_float },
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['C'] = { __printf_arginfo_chr, NULL, __printf_render_chr },
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['E'] = { __printf_arginfo_float, NULL, __printf_render_float },
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['F'] = { __printf_arginfo_float, NULL, __printf_render_float },
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['G'] = { __printf_arginfo_float, NULL, __printf_render_float },
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['S'] = { __printf_arginfo_str, NULL, __printf_render_str },
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['X'] = { __printf_arginfo_int, NULL, __printf_render_int },
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['a'] = { __printf_arginfo_float, NULL, __printf_render_float },
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['c'] = { __printf_arginfo_chr, NULL, __printf_render_chr },
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['d'] = { __printf_arginfo_int, NULL, __printf_render_int },
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['e'] = { __printf_arginfo_float, NULL, __printf_render_float },
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['f'] = { __printf_arginfo_float, NULL, __printf_render_float },
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['g'] = { __printf_arginfo_float, NULL, __printf_render_float },
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['i'] = { __printf_arginfo_int, NULL, __printf_render_int },
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['n'] = { __printf_arginfo_n, __printf_render_n, NULL },
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['o'] = { __printf_arginfo_int, NULL, __printf_render_int },
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['p'] = { __printf_arginfo_ptr, NULL, __printf_render_ptr },
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['q'] = { __printf_arginfo_int, NULL, __printf_render_int },
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['s'] = { __printf_arginfo_str, NULL, __printf_render_str },
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['u'] = { __printf_arginfo_int, NULL, __printf_render_int },
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['x'] = { __printf_arginfo_int, NULL, __printf_render_int },
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};
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static int
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__v2printf(FILE *fp, const char *fmt0, unsigned pct, va_list ap)
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{
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struct printf_info *pi, *pil;
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const char *fmt;
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int ch;
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struct printf_info pia[pct + 10];
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int argt[pct + 10];
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union arg args[pct + 10];
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int nextarg;
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int maxarg;
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int ret = 0;
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int n;
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struct __printf_io io;
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__printf_init(&io);
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io.fp = fp;
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fmt = fmt0;
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maxarg = 0;
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nextarg = 1;
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memset(argt, 0, sizeof argt);
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for (pi = pia; ; pi++) {
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memset(pi, 0, sizeof *pi);
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pil = pi;
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if (*fmt == '\0')
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break;
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pil = pi + 1;
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pi->prec = -1;
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pi->pad = ' ';
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pi->begin = pi->end = fmt;
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while (*fmt != '\0' && *fmt != '%')
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pi->end = ++fmt;
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if (*fmt == '\0')
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break;
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fmt++;
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for (;;) {
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pi->spec = *fmt;
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switch (pi->spec) {
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case ' ':
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/*-
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* ``If the space and + flags both appear, the space
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* flag will be ignored.''
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* -- ANSI X3J11
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*/
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if (pi->showsign == 0)
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pi->showsign = ' ';
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fmt++;
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continue;
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case '#':
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pi->alt = 1;
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fmt++;
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continue;
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case '.':
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pi->prec = 0;
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fmt++;
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if (*fmt == '*') {
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fmt++;
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pi->get_prec = nextarg;
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argt[nextarg++] = PA_INT;
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continue;
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}
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while (*fmt != '\0' && is_digit(*fmt)) {
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pi->prec *= 10;
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pi->prec += to_digit(*fmt);
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fmt++;
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}
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continue;
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case '-':
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pi->left = 1;
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fmt++;
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continue;
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case '+':
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pi->showsign = '+';
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fmt++;
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continue;
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case '*':
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fmt++;
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pi->get_width = nextarg;
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argt[nextarg++] = PA_INT;
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continue;
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case '%':
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fmt++;
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break;
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case '\'':
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pi->group = 1;
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fmt++;
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continue;
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case '0':
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/*-
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* ``Note that 0 is taken as a flag, not as the
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* beginning of a field width.''
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* -- ANSI X3J11
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*/
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pi->pad = '0';
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fmt++;
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continue;
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case '1': case '2': case '3':
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case '4': case '5': case '6':
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case '7': case '8': case '9':
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n = 0;
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while (*fmt != '\0' && is_digit(*fmt)) {
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n *= 10;
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n += to_digit(*fmt);
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fmt++;
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}
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if (*fmt == '$') {
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if (nextarg > maxarg)
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maxarg = nextarg;
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nextarg = n;
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fmt++;
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} else
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pi->width = n;
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continue;
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case 'D':
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case 'O':
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case 'U':
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pi->spec += ('a' - 'A');
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pi->is_intmax = 0;
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if (pi->is_long_double || pi->is_quad) {
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pi->is_long = 0;
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pi->is_long_double = 1;
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} else {
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pi->is_long = 1;
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pi->is_long_double = 0;
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}
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fmt++;
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break;
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case 'j':
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pi->is_intmax = 1;
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fmt++;
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continue;
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case 'q':
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pi->is_long = 0;
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pi->is_quad = 1;
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fmt++;
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continue;
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case 'L':
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pi->is_long_double = 1;
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fmt++;
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continue;
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case 'h':
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fmt++;
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if (*fmt == 'h') {
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fmt++;
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pi->is_char = 1;
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} else {
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pi->is_short = 1;
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}
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continue;
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case 'l':
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fmt++;
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if (*fmt == 'l') {
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fmt++;
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pi->is_long_double = 1;
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pi->is_quad = 0;
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} else {
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pi->is_quad = 0;
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pi->is_long = 1;
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}
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continue;
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case 't':
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pi->is_ptrdiff = 1;
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fmt++;
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continue;
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case 'z':
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pi->is_size = 1;
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fmt++;
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continue;
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default:
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fmt++;
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break;
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}
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if (printf_tbl[pi->spec].arginfo == NULL)
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errx(1, "arginfo[%c] = NULL", pi->spec);
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ch = printf_tbl[pi->spec].arginfo(
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pi, __PRINTFMAXARG, &argt[nextarg]);
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if (ch > 0)
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pi->arg[0] = &args[nextarg];
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if (ch > 1)
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pi->arg[1] = &args[nextarg + 1];
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nextarg += ch;
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break;
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}
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}
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if (nextarg > maxarg)
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maxarg = nextarg;
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#if 0
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fprintf(stderr, "fmt0 <%s>\n", fmt0);
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fprintf(stderr, "pil %p\n", pil);
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#endif
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for (ch = 1; ch < maxarg; ch++) {
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#if 0
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fprintf(stderr, "arg %d %x\n", ch, argt[ch]);
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#endif
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switch(argt[ch]) {
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case PA_CHAR:
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args[ch].intarg = (char)va_arg (ap, int);
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break;
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case PA_INT:
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args[ch].intarg = va_arg (ap, int);
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break;
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case PA_INT | PA_FLAG_SHORT:
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args[ch].intarg = (short)va_arg (ap, int);
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break;
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case PA_INT | PA_FLAG_LONG:
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args[ch].longarg = va_arg (ap, long);
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break;
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case PA_INT | PA_FLAG_INTMAX:
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args[ch].intmaxarg = va_arg (ap, intmax_t);
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break;
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case PA_INT | PA_FLAG_QUAD:
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args[ch].intmaxarg = va_arg (ap, quad_t);
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break;
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case PA_INT | PA_FLAG_LONG_LONG:
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args[ch].intmaxarg = va_arg (ap, long long);
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break;
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case PA_INT | PA_FLAG_SIZE:
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args[ch].intmaxarg = va_arg (ap, size_t);
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break;
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case PA_INT | PA_FLAG_PTRDIFF:
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args[ch].intmaxarg = va_arg (ap, ptrdiff_t);
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break;
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case PA_WCHAR:
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args[ch].wintarg = va_arg (ap, wint_t);
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break;
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case PA_POINTER:
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args[ch].pvoidarg = va_arg (ap, void *);
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break;
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case PA_STRING:
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args[ch].pchararg = va_arg (ap, char *);
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break;
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case PA_WSTRING:
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args[ch].pwchararg = va_arg (ap, wchar_t *);
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break;
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case PA_DOUBLE:
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#ifndef NO_FLOATING_POINT
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args[ch].doublearg = va_arg (ap, double);
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#endif
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break;
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case PA_DOUBLE | PA_FLAG_LONG_DOUBLE:
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#ifndef NO_FLOATING_POINT
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args[ch].longdoublearg = va_arg (ap, long double);
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#endif
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break;
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default:
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errx(1, "argtype = %x (fmt = \"%s\")\n",
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argt[ch], fmt0);
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}
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}
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for (pi = pia; pi < pil; pi++) {
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#if 0
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fprintf(stderr, "pi %p", pi);
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fprintf(stderr, " spec '%c'", pi->spec);
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fprintf(stderr, " args %d",
|
|
((uintptr_t)pi->arg[0] - (uintptr_t)args) / sizeof args[0]);
|
|
if (pi->width) fprintf(stderr, " width %d", pi->width);
|
|
if (pi->pad) fprintf(stderr, " pad 0x%x", pi->pad);
|
|
if (pi->left) fprintf(stderr, " left");
|
|
if (pi->showsign) fprintf(stderr, " showsign");
|
|
if (pi->prec != -1) fprintf(stderr, " prec %d", pi->prec);
|
|
if (pi->is_char) fprintf(stderr, " char");
|
|
if (pi->is_short) fprintf(stderr, " short");
|
|
if (pi->is_long) fprintf(stderr, " long");
|
|
if (pi->is_long_double) fprintf(stderr, " long_double");
|
|
fprintf(stderr, "\n");
|
|
fprintf(stderr, "\t\"%.*s\"\n", pi->end - pi->begin, pi->begin);
|
|
#endif
|
|
if (pi->get_width) {
|
|
pi->width = args[pi->get_width].intarg;
|
|
/*-
|
|
* ``A negative field width argument is taken as a
|
|
* - flag followed by a positive field width.''
|
|
* -- ANSI X3J11
|
|
* They don't exclude field widths read from args.
|
|
*/
|
|
if (pi->width < 0) {
|
|
pi->left = 1;
|
|
pi->width = -pi->width;
|
|
}
|
|
}
|
|
if (pi->get_prec)
|
|
pi->prec = args[pi->get_prec].intarg;
|
|
ret += __printf_puts(&io, pi->begin, pi->end - pi->begin);
|
|
if (printf_tbl[pi->spec].gnurender != NULL) {
|
|
__printf_flush(&io);
|
|
pi->sofar = ret;
|
|
ret += printf_tbl[pi->spec].gnurender(
|
|
fp, pi, (const void *)pi->arg);
|
|
} else if (printf_tbl[pi->spec].render != NULL) {
|
|
pi->sofar = ret;
|
|
n = printf_tbl[pi->spec].render(
|
|
&io, pi, (const void *)pi->arg);
|
|
if (n < 0)
|
|
io.fp->_flags |= __SERR;
|
|
else
|
|
ret += n;
|
|
} else if (pi->begin == pi->end)
|
|
errx(1, "render[%c] = NULL", *fmt);
|
|
}
|
|
__printf_flush(&io);
|
|
return (ret);
|
|
}
|
|
|
|
extern int __fflush(FILE *fp);
|
|
|
|
/*
|
|
* Helper function for `fprintf to unbuffered unix file': creates a
|
|
* temporary buffer. We only work on write-only files; this avoids
|
|
* worries about ungetc buffers and so forth.
|
|
*/
|
|
static int
|
|
__v3printf(FILE *fp, const char *fmt, int pct, va_list ap)
|
|
{
|
|
int ret;
|
|
FILE fake = FAKE_FILE;
|
|
unsigned char buf[BUFSIZ];
|
|
|
|
/* copy the important variables */
|
|
fake._flags = fp->_flags & ~__SNBF;
|
|
fake._file = fp->_file;
|
|
fake._cookie = fp->_cookie;
|
|
fake._write = fp->_write;
|
|
fake._orientation = fp->_orientation;
|
|
fake._mbstate = fp->_mbstate;
|
|
|
|
/* set up the buffer */
|
|
fake._bf._base = fake._p = buf;
|
|
fake._bf._size = fake._w = sizeof(buf);
|
|
fake._lbfsize = 0; /* not actually used, but Just In Case */
|
|
|
|
/* do the work, then copy any error status */
|
|
ret = __v2printf(&fake, fmt, pct, ap);
|
|
if (ret >= 0 && __fflush(&fake))
|
|
ret = EOF;
|
|
if (fake._flags & __SERR)
|
|
fp->_flags |= __SERR;
|
|
return (ret);
|
|
}
|
|
|
|
int
|
|
__xvprintf(FILE *fp, const char *fmt0, va_list ap)
|
|
{
|
|
unsigned u;
|
|
const char *p;
|
|
|
|
/* Count number of '%' signs handling double '%' signs */
|
|
for (p = fmt0, u = 0; *p; p++) {
|
|
if (*p != '%')
|
|
continue;
|
|
u++;
|
|
if (p[1] == '%')
|
|
p++;
|
|
}
|
|
|
|
/* optimise fprintf(stderr) (and other unbuffered Unix files) */
|
|
if ((fp->_flags & (__SNBF|__SWR|__SRW)) == (__SNBF|__SWR) &&
|
|
fp->_file >= 0)
|
|
return (__v3printf(fp, fmt0, u, ap));
|
|
else
|
|
return (__v2printf(fp, fmt0, u, ap));
|
|
}
|
|
|
|
/* extending ---------------------------------------------------------*/
|
|
|
|
int
|
|
register_printf_function(int spec, printf_function *render, printf_arginfo_function *arginfo)
|
|
{
|
|
|
|
if (spec > 255 || spec < 0)
|
|
return (-1);
|
|
printf_tbl[spec].gnurender = render;
|
|
printf_tbl[spec].arginfo = arginfo;
|
|
__use_xprintf = 1;
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
register_printf_render(int spec, printf_render *render, printf_arginfo_function *arginfo)
|
|
{
|
|
|
|
if (spec > 255 || spec < 0)
|
|
return (-1);
|
|
printf_tbl[spec].render = render;
|
|
printf_tbl[spec].arginfo = arginfo;
|
|
__use_xprintf = 1;
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
register_printf_render_std(const char *specs)
|
|
{
|
|
|
|
for (; *specs != '\0'; specs++) {
|
|
switch (*specs) {
|
|
case 'H':
|
|
register_printf_render(*specs,
|
|
__printf_render_hexdump,
|
|
__printf_arginfo_hexdump);
|
|
break;
|
|
case 'M':
|
|
register_printf_render(*specs,
|
|
__printf_render_errno,
|
|
__printf_arginfo_errno);
|
|
break;
|
|
case 'Q':
|
|
register_printf_render(*specs,
|
|
__printf_render_quote,
|
|
__printf_arginfo_quote);
|
|
break;
|
|
case 'T':
|
|
register_printf_render(*specs,
|
|
__printf_render_time,
|
|
__printf_arginfo_time);
|
|
break;
|
|
case 'V':
|
|
register_printf_render(*specs,
|
|
__printf_render_vis,
|
|
__printf_arginfo_vis);
|
|
break;
|
|
default:
|
|
return (-1);
|
|
}
|
|
}
|
|
return (0);
|
|
}
|
|
|