mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-20 11:11:24 +00:00
453 lines
9.7 KiB
C
453 lines
9.7 KiB
C
/* $Header: /p/tcsh/cvsroot/tcsh/tc.printf.c,v 3.35 2006/03/02 18:46:45 christos Exp $ */
|
|
/*
|
|
* 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
|
|
*/
|
|
/*-
|
|
* Copyright (c) 1980, 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. 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.
|
|
*/
|
|
#include "sh.h"
|
|
|
|
RCSID("$tcsh: tc.printf.c,v 3.35 2006/03/02 18:46:45 christos Exp $")
|
|
|
|
#ifdef lint
|
|
#undef va_arg
|
|
#define va_arg(a, b) (a ? (b) 0 : (b) 0)
|
|
#endif
|
|
|
|
#define INF INT_MAX /* should be bigger than any field to print */
|
|
|
|
static char snil[] = "(nil)";
|
|
|
|
static void xaddchar (int);
|
|
static void doprnt (void (*) (int), const char *, va_list);
|
|
|
|
static void
|
|
doprnt(void (*addchar) (int), const char *sfmt, va_list ap)
|
|
{
|
|
char *bp;
|
|
const char *f;
|
|
#ifdef SHORT_STRINGS
|
|
const Char *Bp;
|
|
#endif /* SHORT_STRINGS */
|
|
#ifdef HAVE_LONG_LONG
|
|
long long l;
|
|
unsigned long long u;
|
|
#else
|
|
long l;
|
|
unsigned long u;
|
|
#endif
|
|
char buf[(CHAR_BIT * sizeof (l) + 2) / 3 + 1]; /* Octal: 3 bits per char */
|
|
int i;
|
|
int fmt;
|
|
unsigned char pad = ' ';
|
|
int flush_left = 0, f_width = 0, prec = INF, hash = 0;
|
|
int do_long = 0, do_size_t = 0;
|
|
int sign = 0;
|
|
int attributes = 0;
|
|
|
|
|
|
f = sfmt;
|
|
for (; *f; f++) {
|
|
if (*f != '%') { /* then just out the char */
|
|
(*addchar) (((unsigned char)*f) | attributes);
|
|
}
|
|
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((unsigned char) *f)) {
|
|
f_width = atoi(f);
|
|
while (isdigit((unsigned char) *f))
|
|
f++; /* skip the digits */
|
|
}
|
|
|
|
if (*f == '.') { /* precision */
|
|
f++;
|
|
if (*f == '*') {
|
|
prec = va_arg(ap, int);
|
|
f++;
|
|
}
|
|
else if (isdigit((unsigned char) *f)) {
|
|
prec = atoi(f);
|
|
while (isdigit((unsigned char) *f))
|
|
f++; /* skip the digits */
|
|
}
|
|
}
|
|
|
|
if (*f == '#') { /* alternate form */
|
|
hash = 1;
|
|
f++;
|
|
}
|
|
|
|
if (*f == 'l') { /* long format */
|
|
do_long++;
|
|
f++;
|
|
if (*f == 'l') {
|
|
do_long++;
|
|
f++;
|
|
}
|
|
}
|
|
if (*f == 'z') { /* size_t format */
|
|
do_size_t++;
|
|
f++;
|
|
}
|
|
|
|
fmt = (unsigned char) *f;
|
|
if (fmt != 'S' && fmt != 'Q' && isupper(fmt)) {
|
|
do_long = 1;
|
|
fmt = tolower(fmt);
|
|
}
|
|
bp = buf;
|
|
switch (fmt) { /* do the format */
|
|
case 'd':
|
|
switch (do_long) {
|
|
case 0:
|
|
if (do_size_t)
|
|
l = (long) (va_arg(ap, size_t));
|
|
else
|
|
l = (long) (va_arg(ap, int));
|
|
break;
|
|
case 1:
|
|
#ifndef HAVE_LONG_LONG
|
|
default:
|
|
#endif
|
|
l = va_arg(ap, long);
|
|
break;
|
|
#ifdef HAVE_LONG_LONG
|
|
default:
|
|
l = va_arg(ap, long long);
|
|
break;
|
|
#endif
|
|
}
|
|
|
|
if (l < 0) {
|
|
sign = 1;
|
|
l = -l;
|
|
}
|
|
do {
|
|
*bp++ = (char) (l % 10) + '0';
|
|
} while ((l /= 10) > 0);
|
|
if (sign)
|
|
*bp++ = '-';
|
|
f_width = f_width - (int) (bp - buf);
|
|
if (!flush_left)
|
|
while (f_width-- > 0)
|
|
(*addchar) (pad | attributes);
|
|
for (bp--; bp >= buf; bp--)
|
|
(*addchar) (((unsigned char) *bp) | attributes);
|
|
if (flush_left)
|
|
while (f_width-- > 0)
|
|
(*addchar) (' ' | attributes);
|
|
break;
|
|
|
|
case 'p':
|
|
do_long = 1;
|
|
hash = 1;
|
|
fmt = 'x';
|
|
/*FALLTHROUGH*/
|
|
case 'o':
|
|
case 'x':
|
|
case 'u':
|
|
switch (do_long) {
|
|
case 0:
|
|
if (do_size_t)
|
|
u = va_arg(ap, size_t);
|
|
else
|
|
u = va_arg(ap, unsigned int);
|
|
break;
|
|
case 1:
|
|
#ifndef HAVE_LONG_LONG
|
|
default:
|
|
#endif
|
|
u = va_arg(ap, unsigned long);
|
|
break;
|
|
#ifdef HAVE_LONG_LONG
|
|
default:
|
|
u = va_arg(ap, unsigned long long);
|
|
break;
|
|
#endif
|
|
}
|
|
if (fmt == 'u') { /* unsigned decimal */
|
|
do {
|
|
*bp++ = (char) (u % 10) + '0';
|
|
} while ((u /= 10) > 0);
|
|
}
|
|
else if (fmt == 'o') { /* octal */
|
|
do {
|
|
*bp++ = (char) (u % 8) + '0';
|
|
} while ((u /= 8) > 0);
|
|
if (hash)
|
|
*bp++ = '0';
|
|
}
|
|
else if (fmt == 'x') { /* hex */
|
|
do {
|
|
i = (int) (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 - (int) (bp - buf);
|
|
if (!flush_left)
|
|
while (i-- > 0)
|
|
(*addchar) (pad | attributes);
|
|
for (bp--; bp >= buf; bp--)
|
|
(*addchar) (((unsigned char) *bp) | attributes);
|
|
if (flush_left)
|
|
while (i-- > 0)
|
|
(*addchar) (' ' | attributes);
|
|
break;
|
|
|
|
|
|
case 'c':
|
|
i = va_arg(ap, int);
|
|
(*addchar) (i | attributes);
|
|
break;
|
|
|
|
case 'S':
|
|
case 'Q':
|
|
#ifdef SHORT_STRINGS
|
|
Bp = va_arg(ap, Char *);
|
|
if (!Bp) {
|
|
bp = NULL;
|
|
goto lcase_s;
|
|
}
|
|
f_width = f_width - Strlen(Bp);
|
|
if (!flush_left)
|
|
while (f_width-- > 0)
|
|
(*addchar) ((int) (pad | attributes));
|
|
for (i = 0; *Bp && i < prec; i++) {
|
|
char cbuf[MB_LEN_MAX];
|
|
size_t pos, len;
|
|
|
|
if (fmt == 'Q' && *Bp & QUOTE)
|
|
(*addchar) ('\\' | attributes);
|
|
len = one_wctomb(cbuf, *Bp & CHAR);
|
|
for (pos = 0; pos < len; pos++)
|
|
(*addchar) ((unsigned char)cbuf[pos] | attributes
|
|
| (*Bp & ATTRIBUTES));
|
|
Bp++;
|
|
}
|
|
if (flush_left)
|
|
while (f_width-- > 0)
|
|
(*addchar) (' ' | attributes);
|
|
break;
|
|
#endif /* SHORT_STRINGS */
|
|
|
|
case 's':
|
|
case 'q':
|
|
bp = va_arg(ap, char *);
|
|
lcase_s:
|
|
if (!bp)
|
|
bp = snil;
|
|
f_width = f_width - strlen(bp);
|
|
if (!flush_left)
|
|
while (f_width-- > 0)
|
|
(*addchar) (pad | attributes);
|
|
for (i = 0; *bp && i < prec; i++) {
|
|
if (fmt == 'q' && *bp & QUOTE)
|
|
(*addchar) ('\\' | attributes);
|
|
(*addchar) (((unsigned char) *bp & TRIM) | attributes);
|
|
bp++;
|
|
}
|
|
if (flush_left)
|
|
while (f_width-- > 0)
|
|
(*addchar) (' ' | attributes);
|
|
break;
|
|
|
|
case 'a':
|
|
attributes = va_arg(ap, int);
|
|
break;
|
|
|
|
case '%':
|
|
(*addchar) ('%' | attributes);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
flush_left = 0, f_width = 0, prec = INF, hash = 0;
|
|
do_size_t = 0, do_long = 0;
|
|
sign = 0;
|
|
pad = ' ';
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
static char *xstring, *xestring;
|
|
static void
|
|
xaddchar(int c)
|
|
{
|
|
if (xestring == xstring)
|
|
*xstring = '\0';
|
|
else
|
|
*xstring++ = (char) c;
|
|
}
|
|
|
|
|
|
pret_t
|
|
/*VARARGS*/
|
|
xsnprintf(char *str, size_t size, const char *fmt, ...)
|
|
{
|
|
va_list va;
|
|
va_start(va, fmt);
|
|
|
|
xstring = str;
|
|
xestring = str + size - 1;
|
|
doprnt(xaddchar, fmt, va);
|
|
va_end(va);
|
|
*xstring++ = '\0';
|
|
#ifdef PURIFY
|
|
return 1;
|
|
#endif
|
|
}
|
|
|
|
pret_t
|
|
/*VARARGS*/
|
|
xprintf(const char *fmt, ...)
|
|
{
|
|
va_list va;
|
|
va_start(va, fmt);
|
|
doprnt(xputchar, fmt, va);
|
|
va_end(va);
|
|
#ifdef PURIFY
|
|
return 1;
|
|
#endif
|
|
}
|
|
|
|
|
|
pret_t
|
|
xvprintf(const char *fmt, va_list va)
|
|
{
|
|
doprnt(xputchar, fmt, va);
|
|
#ifdef PURIFY
|
|
return 1;
|
|
#endif
|
|
}
|
|
|
|
pret_t
|
|
xvsnprintf(char *str, size_t size, const char *fmt, va_list va)
|
|
{
|
|
xstring = str;
|
|
xestring = str + size - 1;
|
|
doprnt(xaddchar, fmt, va);
|
|
*xstring++ = '\0';
|
|
#ifdef PURIFY
|
|
return 1;
|
|
#endif
|
|
}
|
|
|
|
char *
|
|
xvasprintf(const char *fmt, va_list va)
|
|
{
|
|
size_t size;
|
|
char *buf;
|
|
|
|
buf = NULL;
|
|
size = 2048; /* Arbitrary */
|
|
for (;;) {
|
|
va_list copy;
|
|
|
|
buf = xrealloc(buf, size);
|
|
xstring = buf;
|
|
xestring = buf + size - 1;
|
|
va_copy(copy, va);
|
|
doprnt(xaddchar, fmt, copy);
|
|
va_end(copy);
|
|
if (xstring < xestring)
|
|
break;
|
|
size *= 2;
|
|
}
|
|
*xstring++ = '\0';
|
|
return xrealloc(buf, xstring - buf);
|
|
}
|
|
|
|
char *
|
|
xasprintf(const char *fmt, ...)
|
|
{
|
|
va_list va;
|
|
char *ret;
|
|
|
|
va_start (va, fmt);
|
|
ret = xvasprintf(fmt, va);
|
|
va_end(va);
|
|
return ret;
|
|
}
|
|
|
|
|
|
#ifdef PURIFY
|
|
/* Purify uses (some of..) the following functions to output memory-use
|
|
* debugging info. Given all the messing with file descriptors that
|
|
* tcsh does, the easiest way I could think of to get it (Purify) to
|
|
* print anything was by replacing some standard functions with
|
|
* ones that do tcsh output directly - see dumb hook in doreaddirs()
|
|
* (sh.dir.c) -sg
|
|
*/
|
|
#ifndef FILE
|
|
#define FILE int
|
|
#endif
|
|
int
|
|
fprintf(FILE *fp, const char* fmt, ...)
|
|
{
|
|
va_list va;
|
|
va_start(va, fmt);
|
|
doprnt(xputchar, fmt, va);
|
|
va_end(va);
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
vfprintf(FILE *fp, const char *fmt, va_list va)
|
|
{
|
|
doprnt(xputchar, fmt, va);
|
|
return 1;
|
|
}
|
|
|
|
#endif /* PURIFY */
|