Adding upstream version 8.4.4.upstream/8.4.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 244 insertions, 0 deletions

diff --git a/lib/printf/printfcommon.h b/lib/printf/printfcommon.h
new file mode 100644
index 0000000..5c45520
--- /dev/null
+++ b/lib/printf/printfcommon.h
@@ -0,0 +1,244 @@
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * Copyright (c) 1990, 1993
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Copyright (c) 2011 The FreeBSD Foundation
+ * All rights reserved.
+ * Portions of this software were developed by David Chisnall
+ * under sponsorship from the FreeBSD Foundation.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+/*
+ * This file defines common routines used by both printf and wprintf.
+ * You must define CHAR to either char or wchar_t prior to including this.
+ */
+
+
+static CHAR	*__ujtoa(uintmax_t, CHAR *, int, int, const char *);
+static CHAR	*__ultoa(u_long, CHAR *, int, int, const char *);
+
+#define NIOV 8
+struct io_state {
+	struct fbuf *cb;
+	size_t avail;
+};
+
+static inline void
+io_init(struct io_state *iop, struct fbuf *cb)
+{
+	iop->cb = cb;
+	iop->avail = cb ? cb->len - (cb->pos - cb->buf) : 0;
+}
+
+/*
+ * WARNING: The buffer passed to io_print() is not copied immediately; it must
+ * remain valid until io_flush() is called.
+ */
+static inline int
+io_print(struct io_state *iop, const CHAR * __restrict ptr, size_t len)
+{
+	size_t copylen = len;
+
+	if (!iop->cb)
+		return 0;
+	if (iop->avail < copylen)
+		copylen = iop->avail;
+
+	memcpy(iop->cb->pos, ptr, copylen);
+	iop->avail -= copylen;
+	iop->cb->pos += copylen;
+	return 0;
+}
+
+/*
+ * Choose PADSIZE to trade efficiency vs. size.  If larger printf
+ * fields occur frequently, increase PADSIZE and make the initialisers
+ * below longer.
+ */
+#define	PADSIZE	16		/* pad chunk size */
+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'};
+
+/*
+ * Pad with blanks or zeroes. 'with' should point to either the blanks array
+ * or the zeroes array.
+ */
+static inline int
+io_pad(struct io_state *iop, int howmany, const CHAR * __restrict with)
+{
+	int n;
+
+	while (howmany > 0) {
+		n = (howmany >= PADSIZE) ? PADSIZE : howmany;
+		if (io_print(iop, with, n))
+			return (-1);
+		howmany -= n;
+	}
+	return (0);
+}
+
+/*
+ * Print exactly len characters of the string spanning p to ep, truncating
+ * or padding with 'with' as necessary.
+ */
+static inline int
+io_printandpad(struct io_state *iop, const CHAR *p, const CHAR *ep,
+	       int len, const CHAR * __restrict with)
+{
+	int p_len;
+
+	p_len = ep - p;
+	if (p_len > len)
+		p_len = len;
+	if (p_len > 0) {
+		if (io_print(iop, p, p_len))
+			return (-1);
+	} else {
+		p_len = 0;
+	}
+	return (io_pad(iop, len - p_len, with));
+}
+
+/*
+ * Convert an unsigned long to ASCII for printf purposes, returning
+ * a pointer to the first character of the string representation.
+ * Octal numbers can be forced to have a leading zero; hex numbers
+ * use the given digits.
+ */
+static CHAR *
+__ultoa(u_long val, CHAR *endp, int base, int octzero, const char *xdigs)
+{
+	CHAR *cp = endp;
+	long sval;
+
+	/*
+	 * Handle the three cases separately, in the hope of getting
+	 * better/faster code.
+	 */
+	switch (base) {
+	case 10:
+		if (val < 10) {	/* many numbers are 1 digit */
+			*--cp = to_char(val);
+			return (cp);
+		}
+		/*
+		 * On many machines, unsigned arithmetic is harder than
+		 * signed arithmetic, so we do at most one unsigned mod and
+		 * divide; this is sufficient to reduce the range of
+		 * the incoming value to where signed arithmetic works.
+		 */
+		if (val > LONG_MAX) {
+			*--cp = to_char(val % 10);
+			sval = val / 10;
+		} else
+			sval = val;
+		do {
+			*--cp = to_char(sval % 10);
+			sval /= 10;
+		} while (sval != 0);
+		break;
+
+	case 8:
+		do {
+			*--cp = to_char(val & 7);
+			val >>= 3;
+		} while (val);
+		if (octzero && *cp != '0')
+			*--cp = '0';
+		break;
+
+	case 16:
+		do {
+			*--cp = xdigs[val & 15];
+			val >>= 4;
+		} while (val);
+		break;
+
+	default:			/* oops */
+		abort();
+	}
+	return (cp);
+}
+
+/* Identical to __ultoa, but for intmax_t. */
+static CHAR *
+__ujtoa(uintmax_t val, CHAR *endp, int base, int octzero, const char *xdigs)
+{
+	CHAR *cp = endp;
+	intmax_t sval;
+
+	/* quick test for small values; __ultoa is typically much faster */
+	/* (perhaps instead we should run until small, then call __ultoa?) */
+	if (val <= ULONG_MAX)
+		return (__ultoa((u_long)val, endp, base, octzero, xdigs));
+	switch (base) {
+	case 10:
+		if (val < 10) {
+			*--cp = to_char(val % 10);
+			return (cp);
+		}
+		if (val > INTMAX_MAX) {
+			*--cp = to_char(val % 10);
+			sval = val / 10;
+		} else
+			sval = val;
+		do {
+			*--cp = to_char(sval % 10);
+			sval /= 10;
+		} while (sval != 0);
+		break;
+
+	case 8:
+		do {
+			*--cp = to_char(val & 7);
+			val >>= 3;
+		} while (val);
+		if (octzero && *cp != '0')
+			*--cp = '0';
+		break;
+
+	case 16:
+		do {
+			*--cp = xdigs[val & 15];
+			val >>= 4;
+		} while (val);
+		break;
+
+	default:
+		abort();
+	}
+	return (cp);
+}