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

  printf '%d\n' '"x"'
and have it print out 120.  This is the smallest implementation I can think
of at the moment.

diff --git a/coreutils/printf.c b/coreutils/printf.c
index da5e46a..697a1c0 100644 (file)
--- a/coreutils/printf.c
+++ b/coreutils/printf.c
@@ -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);
-               }
-
-       }
-}