9dac609629
Reviewed by: jhb, emaste Differential revision: https://reviews.freebsd.org/D35353 MFC after: 2 weeks
169 lines
4.0 KiB
C
169 lines
4.0 KiB
C
/*
|
|
* Copyright (c) 2006 "David Kirchner" <dpk@dpk.net>. 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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 <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include <sys/types.h>
|
|
#include <stdbool.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "support.h"
|
|
|
|
const char *
|
|
lookup_value(struct name_table *table, uintmax_t val)
|
|
{
|
|
|
|
for (; table->str != NULL; table++)
|
|
if (table->val == val)
|
|
return (table->str);
|
|
return (NULL);
|
|
}
|
|
|
|
/*
|
|
* Used when the value maps to a bitmask of #definition values in the
|
|
* table. This is a helper routine which outputs a symbolic mask of
|
|
* matched masks. Multiple masks are separated by a pipe ('|').
|
|
* The value is modified on return to only hold unmatched bits.
|
|
*/
|
|
void
|
|
print_mask_part(FILE *fp, struct name_table *table, uintmax_t *valp,
|
|
bool *printed)
|
|
{
|
|
uintmax_t rem;
|
|
|
|
rem = *valp;
|
|
for (; table->str != NULL; table++) {
|
|
if ((table->val & rem) == table->val) {
|
|
/*
|
|
* Only print a zero mask if the raw value is
|
|
* zero.
|
|
*/
|
|
if (table->val == 0 && *valp != 0)
|
|
continue;
|
|
fprintf(fp, "%s%s", *printed ? "|" : "", table->str);
|
|
*printed = true;
|
|
rem &= ~table->val;
|
|
}
|
|
}
|
|
|
|
*valp = rem;
|
|
}
|
|
|
|
/*
|
|
* Used when the value maps to a bitmask of #definition values in the
|
|
* table. The return value is true if something was printed. If
|
|
* rem is not NULL, *rem holds any bits not decoded if something was
|
|
* printed. If nothing was printed and rem is not NULL, *rem holds
|
|
* the original value.
|
|
*/
|
|
bool
|
|
print_mask_int(FILE *fp, struct name_table *table, int ival, int *rem)
|
|
{
|
|
uintmax_t val;
|
|
bool printed;
|
|
|
|
printed = false;
|
|
val = (unsigned)ival;
|
|
print_mask_part(fp, table, &val, &printed);
|
|
if (rem != NULL)
|
|
*rem = val;
|
|
return (printed);
|
|
}
|
|
|
|
/*
|
|
* Used for a mask of optional flags where a value of 0 is valid.
|
|
*/
|
|
bool
|
|
print_mask_0(FILE *fp, struct name_table *table, int val, int *rem)
|
|
{
|
|
|
|
if (val == 0) {
|
|
fputs("0", fp);
|
|
if (rem != NULL)
|
|
*rem = 0;
|
|
return (true);
|
|
}
|
|
return (print_mask_int(fp, table, val, rem));
|
|
}
|
|
|
|
/*
|
|
* Like print_mask_0 but for a unsigned long instead of an int.
|
|
*/
|
|
bool
|
|
print_mask_0ul(FILE *fp, struct name_table *table, u_long lval, u_long *rem)
|
|
{
|
|
uintmax_t val;
|
|
bool printed;
|
|
|
|
if (lval == 0) {
|
|
fputs("0", fp);
|
|
if (rem != NULL)
|
|
*rem = 0;
|
|
return (true);
|
|
}
|
|
|
|
printed = false;
|
|
val = lval;
|
|
print_mask_part(fp, table, &val, &printed);
|
|
if (rem != NULL)
|
|
*rem = val;
|
|
return (printed);
|
|
}
|
|
|
|
void
|
|
print_integer(FILE *fp, int val, int base)
|
|
{
|
|
|
|
switch (base) {
|
|
case 8:
|
|
fprintf(fp, "0%o", val);
|
|
break;
|
|
case 10:
|
|
fprintf(fp, "%d", val);
|
|
break;
|
|
case 16:
|
|
fprintf(fp, "0x%x", val);
|
|
break;
|
|
default:
|
|
abort2("bad base", 0, NULL);
|
|
break;
|
|
}
|
|
}
|
|
|
|
bool
|
|
print_value(FILE *fp, struct name_table *table, uintmax_t val)
|
|
{
|
|
const char *str;
|
|
|
|
str = lookup_value(table, val);
|
|
if (str != NULL) {
|
|
fputs(str, fp);
|
|
return (true);
|
|
}
|
|
return (false);
|
|
}
|