+/*-
+ * Copyright (c) 1991 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * 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. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. 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.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)printf.c 5.4 (Berkeley) 6/16/91";
+#endif /* not lint */
+
+/*
+ * tc.printf.c: A public-domain, minimal printf/sprintf routine that prints
+ * through the putchar() routine. Feel free to use for
+ * anything... -- 7/17/87 Paul Placeway
+ */
+#include <strings.h>
+#include <stdlib.h>
+#if __STDC__
+# include <stdarg.h>
+#else
+# include <varargs.h>
+#endif
+#include "csh.h"
+#include "char.h"
+#include "extern.h"
+
+#ifdef lint
+#undef va_arg
+#define va_arg(a, b) (a ? (b) 0 : (b) 0)
+#endif
+
+#define INF 32766 /* should be bigger than any field to print */
+
+static unsigned char buf[128];
+
+static void
+doprnt(addchar, sfmt, ap)
+ void (*addchar) ();
+ char *sfmt;
+ va_list ap;
+{
+ register unsigned char *f, *bp;
+ register long l;
+ register unsigned long u;
+ register int i;
+ register int fmt;
+ register unsigned char pad = ' ';
+ int flush_left = 0, f_width = 0, prec = INF, hash = 0, do_long = 0;
+ int sign = 0;
+
+ f = (unsigned char *) sfmt;
+ for (; *f; f++) {
+ if (*f != '%') { /* then just out the char */
+ (*addchar) ((int) (*f));
+ }
+ else {
+ f++; /* skip the % */
+
+ if (*f == '-') { /* minus: flush left */
+ flush_left = 1;
+ f++;
+ }
+
+ if (*f == '0' || *f == '.') {
+ /* padding with 0 rather than blank */
+ pad = '0';
+ f++;
+ }
+ if (*f == '*') { /* field width */
+ f_width = va_arg(ap, int);
+ f++;
+ }
+ else if (Isdigit(*f)) {
+ f_width = atoi((char *) f);
+ while (Isdigit(*f))
+ f++; /* skip the digits */
+ }
+
+ if (*f == '.') { /* precision */
+ f++;
+ if (*f == '*') {
+ prec = va_arg(ap, int);
+ f++;
+ }
+ else if (Isdigit(*f)) {
+ prec = atoi((char *) f);
+ while (Isdigit(*f))
+ f++; /* skip the digits */
+ }
+ }
+
+ if (*f == '#') { /* alternate form */
+ hash = 1;
+ f++;
+ }
+
+ if (*f == 'l') { /* long format */
+ do_long = 1;
+ f++;
+ }
+
+ fmt = *f;
+ if (Isupper(fmt)) {
+ do_long = 1;
+ fmt = Tolower(fmt);
+ }
+ bp = buf;
+ switch (fmt) { /* do the format */
+ case 'd':
+ if (do_long)
+ l = va_arg(ap, long);
+ else
+ l = (long) (va_arg(ap, int));
+ if (l < 0) {
+ sign = 1;
+ l = -l;
+ }
+ do {
+ *bp++ = l % 10 + '0';
+ } while ((l /= 10) > 0);
+ if (sign)
+ *bp++ = '-';
+ f_width = f_width - (bp - buf);
+ if (!flush_left)
+ while (f_width-- > 0)
+ (*addchar) ((int) (pad));
+ for (bp--; bp >= buf; bp--)
+ (*addchar) ((int) (*bp));
+ if (flush_left)
+ while (f_width-- > 0)
+ (*addchar) ((int) (' '));
+ break;
+
+ case 'o':
+ case 'x':
+ case 'u':
+ if (do_long)
+ u = va_arg(ap, unsigned long);
+ else
+ u = (unsigned long) (va_arg(ap, unsigned));
+ if (fmt == 'u') { /* unsigned decimal */
+ do {
+ *bp++ = u % 10 + '0';
+ } while ((u /= 10) > 0);
+ }
+ else if (fmt == 'o') { /* octal */
+ do {
+ *bp++ = u % 8 + '0';
+ } while ((u /= 8) > 0);
+ if (hash)
+ *bp++ = '0';
+ }
+ else if (fmt == 'x') { /* hex */
+ do {
+ i = u % 16;
+ if (i < 10)
+ *bp++ = i + '0';
+ else
+ *bp++ = i - 10 + 'a';
+ } while ((u /= 16) > 0);
+ if (hash) {
+ *bp++ = 'x';
+ *bp++ = '0';
+ }
+ }
+ i = f_width - (bp - buf);
+ if (!flush_left)
+ while (i-- > 0)
+ (*addchar) ((int) (pad));
+ for (bp--; bp >= buf; bp--)
+ (*addchar) ((int) (*bp));
+ if (flush_left)
+ while (i-- > 0)
+ (*addchar) ((int) (' '));
+ break;
+
+
+ case 'c':
+ i = va_arg(ap, int);
+ (*addchar) ((int) (i));
+ break;
+
+ case 's':
+ bp = va_arg(ap, unsigned char *);
+ if (!bp)
+ bp = (unsigned char *) "(nil)";
+ f_width = f_width - strlen((char *) bp);
+ if (!flush_left)
+ while (f_width-- > 0)
+ (*addchar) ((int) (pad));
+ for (i = 0; *bp && i < prec; i++) {
+ (*addchar) ((int) (*bp));
+ bp++;
+ }
+ if (flush_left)
+ while (f_width-- > 0)
+ (*addchar) ((int) (' '));
+
+ break;
+
+ case '%':
+ (*addchar) ((int) ('%'));
+ break;
+ }
+ flush_left = 0, f_width = 0, prec = INF, hash = 0, do_long = 0;
+ sign = 0;
+ pad = ' ';
+ }
+ }
+}
+
+
+static unsigned char *xstring;
+static void
+xaddchar(c)
+ int c;
+{
+ *xstring++ = c;
+}
+
+
+void
+#if __STDC__
+xsprintf(char *str, char *fmt, ...)
+#else
+xsprintf(str, fmt, va_alist)
+ char *str;
+ char *fmt;
+ va_dcl
+#endif
+{
+ va_list va;
+
+#if __STDC__
+ va_start(va, fmt);
+#else
+ va_start(va);
+#endif
+ xstring = (unsigned char *) str;
+ doprnt(xaddchar, fmt, va);
+ va_end(va);
+ *xstring++ = '\0';
+}
+
+
+void
+#if __STDC__
+xprintf(char *fmt, ...)
+#else
+xprintf(fmt, va_alist)
+ char *fmt;
+ va_dcl
+#endif
+{
+ va_list va;
+
+#if __STDC__
+ va_start(va, fmt);
+#else
+ va_start(va);
+#endif
+ doprnt(xputchar, fmt, va);
+ va_end(va);
+}
+
+
+void
+xvprintf(fmt, va)
+ char *fmt;
+ va_list va;
+{
+ doprnt(xputchar, fmt, va);
+}
+
+void
+xvsprintf(str, fmt, va)
+ char *str;
+ char *fmt;
+ va_list va;
+{
+ xstring = (unsigned char *) str;
+ doprnt(xaddchar, fmt, va);
+ *xstring++ = '\0';
+}
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