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Bug 624 wants quoted char support for printf, so you can do something like:

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printf '%d\n' '"x"'
and have it print out 120.  This is the smallest implementation I can think
of at the moment.
This commit is contained in:
Rob Landley 2006-01-06 20:28:05 +00:00
parent f8ec1b51f3
commit 251161f75c
1 changed files with 50 additions and 54 deletions
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104
coreutils/printf.c
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@ -1,20 +1,11 @@
/* vi: set sw=4 ts=4: */
/* printf - format and print data
Copyright (C) 90, 91, 92, 93, 94, 95, 1996 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
Copyright 1999 Dave Cinege
Portions copyright (C) 1990-1996 Free Software Foundation, Inc.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
Licensed under GPL v2 or later, see file LICENSE in this tarball for details.
*/
/* Usage: printf format [argument...]
@ -58,14 +49,56 @@
#include <assert.h>
#include "busybox.h"
static double xstrtod __P((char *s));
static long xstrtol __P((char *s));
static unsigned long xstrtoul __P((char *s));
static void print_esc_string __P((char *str));
static int print_formatted __P((char *format, int argc, char **argv));
static void print_direc __P( (char *start, size_t length,
int field_width, int precision, char *argument));
typedef int (*converter)(char *arg, void *result);
void multiconvert(char *arg, void *result, converter convert)
{
char s[16];
if (*arg == '"' || *arg == '\'') {
sprintf(s,"%d",(unsigned)*(++arg));
arg=s;
}
if(convert(arg,result)) fprintf(stderr, "%s", arg);
}
static unsigned long xstrtoul(char *arg)
{
unsigned long result;
multiconvert(arg,&result, (converter)safe_strtoul);
return result;
}
static long xstrtol(char *arg)
{
long result;
multiconvert(arg, &result, (converter)safe_strtol);
return result;
}
static double xstrtod(char *arg)
{
double result;
multiconvert(arg, &result, (converter)safe_strtod);
return result;
}
static void print_esc_string(char *str)
{
for (; *str; str++) {
if (*str == '\\') {
str++;
putchar(bb_process_escape_sequence((const char **)&str));
} else {
putchar(*str);
}
}
}
int printf_main(int argc, char **argv)
{
char *format;
@ -277,40 +310,3 @@ print_direc(char *start, size_t length, int field_width, int precision,
free(p);
}
static unsigned long xstrtoul(char *arg)
{
unsigned long result;
if (safe_strtoul(arg, &result))
fprintf(stderr, "%s", arg);
return result;
}
static long xstrtol(char *arg)
{
long result;
if (safe_strtol(arg, &result))
fprintf(stderr, "%s", arg);
return result;
}
static double xstrtod(char *arg)
{
double result;
if (safe_strtod(arg, &result))
fprintf(stderr, "%s", arg);
return result;
}
static void print_esc_string(char *str)
{
for (; *str; str++) {
if (*str == '\\') {
str++;
putchar(bb_process_escape_sequence((const char **)&str));
} else {
putchar(*str);
}
}
}